DD294313A5 - ARRANGEMENT FOR THE WELDING OF STAINLESS STEEL MASTING - Google Patents

Abstract

The invention relates to an arrangement for the shunting of steel lattice masts for power lines, preferably in a crane flight. The unmanned, section-wise stagnation of steel lattice masts with mast width increase or inclination change on the Stockstosz takes place over a stick pyramid with perpendicularly verkroepften Fuehrungsstaeben. In this case, a guide frame connected to the stick part initially slides over the slanted edge bars and later on with a constant air gap at the stick pyramid. In the final phase of the stocking process, the stock part is set in funnel-shaped end guides. Fig. 1 {steel lattice mast; Stock device; Aerial crane; Stock Pyramid}

Description

Field of application of the invention

The invention relates to an arrangement for the shot-wise stagnation of steel lattice towers for power transmission lines, preferably in crane flight.

Characteristic of the known state of the art

A device for mansemem sticking of Mastschüssen (US-PS 0054508) has four diagonally inwardly and upwardly projecting guide rods on the already established mast shaft. The lower end of the stock part is covered by a safety rope for rough alignment over the guide rods at the beginning of the stocking process.

The guide rods progressively guide the helicopter-mounted stick portion to guide profiles which have been threaded into the angle-of-profile grooves of the upper ends of the corner stems of the already established mast shaft. In the further. Course of the sticking process, the corner angle of the floor part slide on the guide rods so far until dad stocking is seated on below the Führungsstäb6 arranged brackets.

In addition to the expected difficulties in the Vorzentrierphase the stock process, there is a further disadvantage is that the use of the device bui masts with tilt change of the mast shots is not possible.

For stalling parallel business Mastschüsse a device (SU-PS 633799) has been proposed d ^! - Has pyramids on a center support strained ropes. The floor part also has in the lower area a tensioned around the corner alien guide rope. During the sticking process, the stick is lowered over the rope pyramid.

Disadvantage of this device is that the necessary stability is not guaranteed especially when stagnating heavy mast sections.

Another known device for unmanned stoppage of mast shots by means of a crane helicopter (EP-PS 0054 508) is designed as a guide pyramid, which has a bend at the lower end, which runs parallel to the vertical axis of the mast shot to be mounted. This guide pyramid is arranged on the inner circumference of the tip of each mast shot of the mast. During the Stockvorgariges the stock part is lowered over the guide pyramid of the already mounted mast shot, wherein first applies the lower edge of the bottom open floor part of the inclined leading edges. Upon further lowering and the associated increasing Axialzentrierung the floor member slides with its inner lower edge of the beveled edges on the bent part of the guide pyramid. The sticking process is completed when between the bent part of the guide pyramid and the lower part of the floor part a flat positive connection is created.

Disadvantage of this device is that even at small deviations or deformations of the mast shank or the floor part of the hive is jeopardized by jamming. When using a crane helicopter so hard-to-control accidents are not excluded.

Object of the invention

It is an object of the invention to reduce the time required for the clogging of steel lattice towers to increase occupational safety and thus to effectively use advanced Mcntagetechnologien, such as the use of crane helicopters.

Explanation of the essence of the invention

The invention has for its object to propose a new arrangement, which ensures in particular in steel lattice towers with Mast width increase or with tilt change on the butt joint while stuttering a deadlock guiding the stick part until reaching the end position. When reaching the end position, the floor part should be fixed, the freedom of assembly for the attachment of the Stoßknotenbleche is not limited.

According to the invention, the arrangement has a guide pyramid, which consists of first obliquely extending and then perpendicularly bent edge bars. In each case at a corner angle of the mast shaft are provided partly in the plane of the x-wall and partly in the plane of the y-wall with narrow tapered guide channel end guides. These end guides are assigned horizontally out of the corner posts of the stock part projecting studs. The lower ends of the corner angle of the pole piece include a guide frame which slides in the phase of pre-centering of the pole part on the oblique Kantenhstäbe. The edge bars are hingedly connected to the top of the pyramid guide frame final pyramid.

If the guide frame reaches the vertically extending edge bars of the guide pyramid as the lower part of the frame is lowered, the phase of the main centering begins. The inner edges of the guide frame slides while maintaining a relatively small air gap perpendicular to the edge bars. At the same time arranged at the corner angles of the stick part Studs begin to immerse in the guide channels of the end guides. The final centering begins when the studs meet the downwardly narrowing guide channels of the end guides and thus the stick is increasingly pressed into its final position.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing shows

Fig. 1: the schematic representation of the arrangement in the phase of preconcentration ctes Stockteiles.

In the exemplary embodiment, the unmanned stalling of a section of a steel lattice mast 2 brought up by means of a crane helicopter is to be described on the already erected part of the mast shaft 1. The drawing shows schematically the stick thrust waiving the representation of the entire components.

As can be seen from FIG. 1, the head of the last mast section of the mast shaft 1 for the stocking process is provided with a guide pyramid 3. This guide pyramid 3 is formed in the shape of a truncated pyramid, wherein the initially bevelled edge bars are bent perpendicularly in the lower region of the pyramid. The upper end of the guide pyramid 3 forms a pyramid frame 8. The pyramid frame 8 is hinged via hinge connections 9 to the edge bars of the guide pyramid 3.

The bases of the guide pyramid 3 are arranged with a specific, dependent on the mast design and mast size diagonal offset in the mast cross-section of the corner stems of the mast shank 1 with not shown in the drawing connecting means.

A stabilizing frame 4 connects the corner posts of the mast shank. 1

Each corner angle of the mast shank 1 is at one of its angle legs with a Endführunn. 6 provided. The end guides, which are located partly in the plane of the x-wall and partly in the plane of the y-wall of the mast shank 1, have a downwardly narrowing and defined stop guide channel. Associated with the end guides 6 are stud bolts 7 projecting from the corner posts of the floor part 2.

In the following, the Funktionswelse the arrangement will be described in more detail.

The sticking process takes place in three phases, which are referred to as pre-centering, main centering and final centering.

During the phase of pre-centering, the stick 2 is brought as far as possible into a position above the axis of the spigot 1. During the following lowering of the floor part 2, the inner edge of the guide frame 5 begins to slip onto the oblique edge bars of the guide pyramid 3. The hinge-like connection of the pyramid frame 8 with the edge bars of the guide pyramid 3 gives this by the possible parallelogram-like displacement of the edge bars a certain elasticity.

This process is shown in FIG.

The phase of the main centering begins after the inner edge of the guide frame 5 has reached the vertical edge bars of the guide pyramid 3 on further lowering of the pole part 2. The inner edge of the guide frame 5 slides with a small, constant distance to the edge bars perpendicular to the guide pyramid 3, whereby a tainted with certain tolerances centering of the stick part to the mast shaft 'n the x-y coordinate is reached.

The phase of the main centering is increasingly superimposed on the further lowering of the stick part 2 of the phase of the final centering. The studs 7 arranged on the corner posts of the pole part 2 dip into the guide channel of the end guides β, wherein the pole part 2 is pressed in the guide channel narrowing into the end position relative to the x-y coordinate.

Based on the z-coordinate, the Stcokteil 2 is determined by end stops in the end guides 6, which are derived from the respective Mastbauart and size.

After reaching the end position can be easily arranged on the free angle legs of the corner handles 1.2 Stoßknotcnbleche.

Claims (1)

Arrangement for the shot-wise sticking of Stahlgittej'n.asten, formed with an initially obliquely and then perpendicularly cranked extending edge bars guide pyramid and provided with downwardly tapered guide channel end guides arranged on the corner posts of the stick member and the end guides associated stud, characterized in that the Bottom ends of the corner angle of the floor part (2) in the area above the joint bump plate holes with a to the interior of the floor part (2) projecting angle leg! including provided guide frame (5) over the oblique edge bars of the guide pyramid (3) the stock part (2) initially precentered and then guided parallel to the vertical edge bars of the guide pyramid (3) with a relatively small uniform air gap, at the same time by means of each only at an angle leg of the corner stems of the mast shank (1) in the plane of the x-wall and in the plane of the y-wall of the mast shank (1) arranged end guides (6) and guided therein stud bolts (7) the stick part (2) increasingly is pressed into its final position. For this 1 page drawing