DD281789A5 - WINDSURF FOR BRUECKEN AND PORTAL CRANES OUTDOOR - Google Patents

Abstract

The invention relates to the securing of cranes and other electrically moving on rails hoists and equipment in the open, wherein the rail profile can be configured as desired. The technical object of the invention is to provide an effective and automatic protection against wind-driven, which works subjectively independent of interruption of the electrical system of the system. Erfindungsgemaesz this is achieved by a toggle lever system is in communication with a drive unit and at the end of the toggle lever system facing the rail, a segment provided with a hardened toothing is articulated. By placing the eccentrically shaped segment on the rail, the crane is slightly lifted during movement by wind and locked with the toothing on the Schienenlaufflaeche. Crane; any rail profile; Toggle system; Schienenlaufflaeche; Segment; hardened toothing; eccentric; automatically; subjectively independent}

Description

Field of application of the invention

The invention boils down to a wind protection system for attachment to all bridge and gantry cranes operated outdoors and loading bridges and other devices moved electrically on rails. The shape of the rail profile can be designed as desired.

Characteristic of the known state of the art

The previously known wind protection on bridge and gantry cranes in the open are usually based on the principle of manual detection of jaws.

In this case, the jaws are pressed against the rail edges or the rail head underside usually over a long threaded spindle with handwheel or crank using a lever linkage.

This work requires a lot of time, effort and human behavior.

There is thus no absolute assurance that the hoist is in any case against wind drift gesichei t. Furthermore, Windabtriebssicherungon are known, although all work with jaws, but are electrically powered.

They all have the disadvantage that they must be energized in case of power failure by means of a handwheel.

Large road inaccuracies are not compensated.

The state of the art still has wind deflector fenders, which arboit over a counterweight to be moved, a rack and a toggle.

For this purpose, a laterally arranged pinch roller is pressed. The disadvantage of this backup is the large space required in rail height for the lateral pinch roller and not fully effective in case of inaccurate road and tilt of the crane.

Another wind-breakage protection acts automatically by jamming a laterally arranged eccentric roller.

The disadvantage here is that it is not suitable for all rail profiles. The space required for the mobility of the jaws requires especially large space conditions.

There are still known Windabtriebssicherungen, which act only at the crane tail. When approaching the bumper intended for this purpose, a locking pawl lays over the same and thus locks the crane.

If the crane is at an angle, there is no functional safety, as not both sides of the crane bear against the buffer. Incidentally, in this solution is to be regarded as a further disadvantage of the fact that in case of power failure, the crane must be driven or pulled in any case only to the buffer.

In US Pat. 3807532 described locking unit for protection against wind-down is also brought via a lever system a rail pliers in attack. Again, as with all other systems, the rail pliers must be adjusted according to the profile of the crane track rail. Another disadvantage in the prior art is the lack of coupling to the electrical network of the hoist.

Utility Model 7822759 describes a handrail braking device.

The brake parts used in this case each have a cutting edge, which engage the lower flange of the Katzbahnträgers.

The entire design training is not designed for operation on hatchery and gantry cranes. It is only suitable for small loads.

The braking effect is achieved by friction between the brake eccentric and the underside of the rail.

All the listed wind deflector have the great disadvantage that they are not arbitrarily applicable and the shape of the jaws is always dependent on the rail profile.

The operation itself is done either by hand or electrically, which has the disadvantage that in the absence of electrical energy in each case must be worked by hand.

Object of the invention

It is the object of the invention to provide a universal and universally applicable solution against wind-driven large equipment, especially cranes.

The function should be guaranteed regardless of the Schie.ienform and the quality of the road in any case.

It should be created the possibility to secure the crane in a short time in case of sudden strong wind. The solution should be economical and easy to implement. Also, the possibility of an automatic fuse must exist when no electrical energy is available.

Explanation of the essence of the invention Di * technical object of the invention is that used outdoors cranes or devices against wind-driven effectively

and subjectively secure independently. The windbreaker according to the invention is used against wind down at all altitudes.

A great advantage is that the shape of the rail profile can be chosen arbitrarily. The device can be in pairs on each head wagon of a crane anbi ingen, with each non-driven side

should be used so that the suspension brake remains fully effective.

Another advantageous effect is in the automatic use of the fuse when switching off the main contactor or at Power failure of the electrical network of the crane system to see. The solution according to the invention is characterized in that the drive unit is a dyed electrohydraulic Actuator via a known toggle lever system, which is guided in a frame, a segment actuated and this

vertically on the tread of the road touches. The lowering time undergoes a delay so that the landing gear brake, which must be set to a certain action time, brings the crane in case of power failure or emergency stop safely to a halt. This advantageous

The effect of the windage delay protects the crane from sudden deceleration and additional wear

on the rail and the safety device. The respective position of the windscreen is the operator on

Control unit displayed. . The segment according to the invention, which is attached to the end of the lever system facing the rail, has

advantageously on the arcuate end face, which in turn is eccentric and points to the running surface of the rail, a hardened toothing.

The segment itself is rotatably mounted on the underside of the push rod and has by the U-shaped according to the invention Cross section a high stability. The arrangement of the bearing on the axis of symmetry and the eccentric end face of the segment have the advantageous Effect that the windscreen can be used in both directions. When placing this segment on the rail, the non-driven impeller is relieved and the greatest vertical force

developed.

This toothed and hardened segment has a high coefficient of friction to the rail and begins to roll off during a storm. The

eccentric design of the end face has the advantageous effect that the crane is raised on the non-driven side by a certain amount, which does not exceed the distance of the Radkranzes. The proportionate crane weight presses the toothed segment onto the rail, which brings about a further horizontal movement as well as a dynamic downforce, which contributes to the

Danger of falling leads, is effectively prevented. Due to the constructive solution, to keep the dimension of the wheel flange larger than the distance between the rail and the wheel, the crane remains

even after digging in the lane. So that the eccentric goes back to its original position when it is relieved, the

Angle of rotation limited to a certain number of degrees. To achieve this, are at the bottom of the Haltegstelles Attached stop strips, which in turn beveled contact surfaces for complete abutment of the toothed segment

respectively. The solution according to the invention has the large by the use of the toothed segment on the rail running surface

Advantage that it can be used for each selected rail cross section. In addition, the invention still has one

great beneficial effect, since at any point and in case of power failure, the crane can be secured against downforce.

embodiment In the following embodiment, the invention will be explained in more detail. The accompanying drawing shows the windscreen in the open position. In its structural design, the wind protection advantageously consists of a screw-on (9), the individual

to adapt the head carriage of the crane.

This Anschraubplatte 9 receives in its upper region necessary for height adjustment device 10. To the Screw plate 9, a base plate 11 is fixed, on which the guide 4 and the knee lever holder 5 and the Stop screw 6 are located. At the knee holder 5 e> ne push rod 8 is mounted, the holes 2 in their joints

has associated bolt and is guided by the frame 4.

At the middle part of the push rod 8, a limit switch 12 is still installed, the signal to the function of wind protection on Control part triggers. Between the angled end of the push rod 8 and the frame 4 is the drive unit. 7

arranged.

The segment 1 is located at the bottom of the push rod 8 and shows with its arcuate toothed and hardened Bearing surface on the rail running surface. To limit the angle of rotation of the segment 1, the underside of the Frame 4 with stop strips 3, which have a beveled contact surface equipped. The device according to the invention

speaks through the use of the drive element 7, in the embodiment an ELHY, when switching off the circuit or in case of power failure immediately.

With the operation of the hydraulic device on the drive unit 7 of the toggle lever 8 is brought into position so that the Segment 1 with its advantageously toothed arcuate and hardened end face on the running surface of the rail thirteenth

suppressed.

The adjusting screw 6 prevents a complete rectilinear stretching of the push rod 8. The advantage is that the creation of a dead center of the system is avoided. The attached to the push rod 8 limit switch 12 shows the control panel of the hoist leader durci; «Ine indicator the opened safety device and thus the readiness of the crane.

When wind gusts or storms occur then rotates the rotatably mounted segment on the rail due to the eccentric design of the face so far from that the crane or the hoist is lifted by a certain amount on the non-operated side. The flattening at the top of the segment 1, prevents oscillation in the open state. To limit this angle of rotation 4 stop strips 3 are attached to the underside of the frame. The stop bar 3 has on its underside a beveled contact surface, which is adapted exactly to the shape of the eccentric in use and guarantees a surface area conditioning.

When you turn on the drive unit 7 whose piston rod is extended again and the push rod 8 moves along with the segment 1 back up, so that with the crane on the rail and its driving readiness is restored.

The device described combines the advantages that it works automatically and thus subjective influences are excluded. It can be mounted on all rail-mounted lifting devices and retrofitted. The rail cross-section has no influence on the mode of action.

Claims (2)

1. Wind protection for bridge and gantry cranes in the open, consisting of a lever system with associated drive units, characterized in that at the rail (13) facing the end of the lever system, a segment (1) is rotatably mounted, which by a central cutout a U-shaped cross-section, wherein the two legs which are flattened at the upper edge, each having a cylindrical bore (2) which are arranged on the axis of symmetry and pointing to the rail running surface arcuate end face which is eccentric to the pivot point, with a hardened toothing is formed. 2. Wind protection for bridge and gantry cranes outdoors, according to claim 1, characterized in that on the frame base (4) on both sides of the push rod (8) stop strips (3) are arranged with bevelled contact surfaces.