DE1251789B - Device for supporting feed presses which are used for pressing in pipes or the like - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

EOIg
ά

Int. Cl .:

German class: 19 f ^ 3/00

Number: 1 251 789

File number: B 78727 V / 19 f

Filing date: September 30, 1964

Open date: October 12, 1967

The invention relates to a device for supporting feed presses guided on rails, which od for pressing pipes Feed stroke supported on individual of spaced apart one behind the other fixed rail lugs which overflow for tracking the press piston support during the return stroke of the presses will.

In a device for the same purpose, it is known that the press piston by means of a fixed to the rail Support brackets as a rear abutment that can be applied to the pressure piece. By periodic Adjustment of the pressure piece and retraction of the press piston can be done with this device longer press-in lengths for the pipes can be achieved with a relatively short press stroke. To follow up the pressure piece this must first be lifted vertically over the consoles and be lowered after the advance in front of the following consoles. This handling proves itself particularly difficult and cumbersome with large presses. It is also known about the pipe feed to provide a movable slide for the pipe, which has a toothing and through a stationary but tilting press and one with the teeth during the press forward and reverse stroke cooperating ratchet drive is moved forward intermittently. The use of only from above in the toothing of the slide engaging pawls allows this device only for smaller propulsive forces appear suitable.

The invention is based on the object of creating a device of the type specified at the beginning, which is suitable for larger propulsion forces and works reliably. The solution to this problem is there in that each of the press pistons by means of a tiltable pressure piece on one above the other Approaches is supported, which during the return stroke of the press by running on in its path of movement protruding starter body is tilted so far that it is between the overlapping approaches can pass through, and which then returns to its support position by the action of gravity. The thrust blocks can be fixed to the rails or can be placed loosely on the rails, while the desired action of gravity for the pivoting back of the pressure piece by the Arrangement of a weight on the pressure piece can be ensured. This way is one Movable support for the feed presses formed on rails that compensate for the Device for supporting

of feed presses that are used for pressing

of pipes or the like. Serve

Applicant:

Hans Brochier, Nuremberg, Marthastr. 16

Named as inventor:

Fritz Möschel, Stein near Nuremberg

Press feed allows an unimpeded return stroke of the press piston and an automatic setting on the rails during the feed stroke of the press piston without any assembly effort.

In an embodiment of the invention, the pressure piece can be attached to the press piston by means of a support frame be held, which od by means of rollers. The like. Is supported on a rail. This can be useful Pressure piece be mounted in the support frame in such a way that the press piston is frictionally engaged during the advance stroke rests on the pressure piece, while during the return stroke to ensure tilting mobility the press piston is lifted from the pressure piece with play.

For this purpose, in a preferred embodiment, the pressure piece is on the press piston side with a spherical cap provided, on the side facing away from the press piston, a flat pressure plate as Support member connects. The pressure plate is kept so large that it can be supported at the same time is reached at the overlapping approaches of the rails.

In the drawing, an embodiment of the invention is shown, namely shows

F i g. 1 shows a device according to the invention in the support position of a press piston,

F i g. 2 shows a device according to FIG. 1 in the tracking position and

F i g. 3 the top view of the press piston end with pressure piece.

1 with a press piston cylinder is referred to, which is guided on rails 9 and with its not shown End on pipe sections or a pressure ring upstream of these od. The like. Acts. in the Press cylinder 1 is guided in a longitudinally displaceable manner, a press piston 2, which is hydraulic or pneumatic is extendable. A pressure piece 3 is connected to the press piston 2 via a support frame 4

709 677/122

brought, which comes with a flat pressure plate 5 with rail-fixed approaches 6 to the effect. Of the The support frame is articulated on the press piston 2 by means of an axis 7 and is movable via rollers 8 supported on the lower rail 9. The support frame 4 has bearings 10 for the pressure piece fixed Axes 11, about which the pressure piece 3 can be tilted. The pressure piece 3 carries on its rear side a weight body 12 for generating a tilting moment acting on the pressure back 3, which is adjustable on an arm 13 with displaceable mounting of the weight body. Between the approaches 6 of the lower rail 9, thrust bodies 14 with an inclined ramp 15 are inserted. The start-up bodies 14 protrude into the path of movement of the pressure piece 3 in order to act on it during the return stroke of the press piston 2 to exert a further, but opposing, overturning moment. The thrust body 14 can z. B. be formed by an insertable piece of wood. But it is also possible, the thrust body 14 ao train them firmly on rails.

To understand the operation of the device, it is assumed that the press cylinder 1 and the press piston 2 is shown in FIG. 1 starting positions shown take in. Here, the pressure piece 3 is under the influence of the weight body 12 pivoted into the upright position and the press piston by contacting the pressure plate S on the Approaches 6 supported on the upper and lower rails 9. In this position you can bring in of the pressure medium in the press cylinder 1, the feed force on the pipes to be pressed or Acting pipe sections for introducing the same into the ground. After the feed has taken place, the Press piston 2 returned to its starting position by a return stroke and the support on be effected in the pressing direction provided approaches further forward. When retracting the press piston 2, the lower edge of the pressure piece 3 first hits the ramp 15 of a run-up body 14 and is tilted by this about the axes 11 (FIG. 2). The pressure piece 3 can be in the tilted position over the thrust body 14 and further between the superimposed approaches 6 to pass after overflowing the lower approach 6 automatically under the influence of the To pivot the weight body 12 back into the upright position (FIG. 1). The pressure piece lies afterwards in front of the lugs 6 arranged further forward in the feed direction, so that when re-introducing of pressure medium in the press cylinder 1 of the press piston 2 again via the pressure piece 3 and lugs 6 is supported on the rails 9. This process is according to the number of consecutive Approaches 6 can be repeated as required. When using a detachable run-up body 14, this is to apply to the return stroke in front of the approach 6 to be overrun on the rail.

As can also be seen from the figures, the pressure piece 3 is spherical cap-shaped on the press piston side educated. The crown engages with its apex in a bearing body 16 on the press piston 2 with little Play, whereby the press piston 2 frictionally fixes the pressure piece during the feed stroke and stands out from this during the return stroke for free tilting mobility of the pressure piece.

In the embodiment, the dome of the pressure piece 3 consists of a number of joined together Spherical layers 3 ', which are formed by ring bodies and firmly connected to one another by welding.

Claims (9)

Patent claims: 1. Device for supporting feed presses guided on rails, which are used for pressing of pipes or the like in the ground, in which the press piston during the feed stroke supported on individual, spaced apart one behind the other, fixed to the rails which overflow for tracking the press piston support during the return stroke of the presses are, characterized in that each of the press pistons (2) by means of a tiltable pressure piece (3) on one above the other Approaches (6) is supported that when the press is backstroke by starting in his Movement path protruding run-up body (14) is tilted so far that it is between the superimposed Approaches (6) can pass through and which then returns to its support position by the action of gravity. 2. Apparatus according to claim 1, characterized in that a on the pressure piece (3) Weight body (12) is arranged to ensure the return to the support position. 3. Apparatus according to claim 1 or 2, characterized in that the thrust body (14) are arranged on the back of the lugs (6) fixed to the rails or so that they can be inserted. 4. Device according to one of claims 1 to 3, characterized in that the thrust body (14) each have a ramp (15) for the pressure piece (3). 5. Device according to one of claims 1 to 4, characterized in that the pressure piece (3) is held on the press piston (2) by means of a support frame (4) and the support frame is supported on a rail (9) by rollers (8) or the like. 6. Apparatus according to claim 5, characterized in that the pressure piece (3) in such a way Support frame (4) is mounted that the press piston (2) frictionally engages during the feed stroke the pressure piece rests, while the press piston (2) from the pressure piece (3) with the return stroke Game has taken off. 7. Device according to one of claims 1 to 6, characterized in that the pressure piece (3) on the press piston side has a spherical cap on which the press piston (2) facing away from a flat pressure plate (5) connects. 8. Apparatus according to claim 7, characterized in that the spherical cap by superimposed, firmly interconnected spherical layers (3 ') is formed. 9. Apparatus according to claim 8, characterized in that the spherical layers (3 ') at least are partially formed by ring bodies. Considered publications:
German utility model No. 1 884 930;
U.S. Patent No. 2,935,298. 1 sheet of drawings 709 677/122 10. 67 @ Bundesdruckerei Berlin