DE19931315A1 - Freely support sliding gate system - Google Patents

Abstract

The sliding gate moves horizontally on support rollers in a C-section base rail (1.2) and is made up of grid bars (1.6) which are push-fitted together and not welded. Before fitting in a holding profile (1.7) the bar ends (1.9) are widened out by a special machine. The holding profile is welded concealed on the top rail and lower rail.

Description

In the drawing No. 1 - Fig. 1, a cantilever steel sliding gate is shown. The stationary support and support roller assemblies ( 1.1 ), which can move the sliding gate in the longitudinal direction, are freely guided in a hollow body or a C-rail ( 1.2 ).

The goal body consists of the lower spar ( 1.2 ), upper spar ( 1.3 ), end spars ( 1.4 ), intermediate struts ( 1.5 ) and the lattice bars ( 1.6 ).

The base material of the gate system is steel.

In the sliding gate system described, the gate body is usually completely welded, whereby of course each individual lattice bar is also welded.

After welding, the sliding gates must be protected against corrosion, because the gates are constantly exposed to the weather (are in the "outdoors").

Corrosion protection options are:

• 1. Complete hot-dip galvanizing of the gate system.
• 2. Blasting with subsequent flame spray galvanizing.
• 3. Use Sendsimir galvanized profiles, each weld seam with Cold galvanizer must be relinked. Because the bars are very are numerous, a very high level of refinishing is required.

Based on the prior art mentioned, the invention is now the object have to manufacture a sliding gate so that a very high level of corrosion protection is achieved can be produced quickly and efficiently and only a small amount of welding work is required.

The solution is:
A "plug-in system" is developed, so that the numerous bars no longer have to be welded, but are now put together and pressed firmly into a punched-out area provided for this purpose.

The advantage of this "plug-in system" is that the sliding gate body is made from already galvanized hollow steel profiles (galvanized inside and outside), whereby only the intermediate struts ( 1.5 ) and end rails ( 1.4 ) have to be welded in order to obtain a stable gate construction.

The "plug-in system" works as follows:
see also drawing no. 1 + 2

• 1. The gate body ( 1.0 ) is cut according to the required customer dimensions.
• 2. As standard, the lattice bar ( 1.6 ) consists of a square tube 30/30 / 1.5 mm.
  The holding profile ( 1.7 ) consists of a C-profile 25/50/25/2, which is punched out at intervals of 112 mm.
  These cut-outs have a cross-section of 30.7 mm, so that the lattice bar ( 1.6 ) can be easily pushed through.
• 3. The ends of the bars must now be extended to all 4 sides approx. 24 mm before the end of the bar, so that the bar does not "rattle" in the punched-out areas ( 1.8 ) after the door has been manufactured. The profile extension is approx .: 31.2 mm (drawing no. 2 - Fig. 2.2).
• 4. This is achieved by pressing 4 hardened steel balls ( 3.0 ) from the inside of the lattice bar to the outside using a self-developed special machine and thus expanding the lattice bar at the 4 points ( 1.9 ).
  Driving the balls apart causes a center point ( 4.0 ) (see drawing no. 2 - Fig. 2.1).
• 5. The holding profile ( 1.7 ) is now welded onto the upper spar ( 1.3 ) or lower spar ( 1.2 ).
  The weld seam is made within the holding profile so that it is not visible from the outside (see drawing no. 2 - Fig. 2.2).
• 6. The gate is then placed on assembly stands ( 5.0 ), aligned and all bars are inserted into the punched holes ( 1.8 ) provided. The gate with about 6 tons of pressing force is now per assembly stand together (see Drawing no. 3 - Fig. 3.).
• 7. The bars ( 1.6 ) now have a very firm "fit" press fit in the holding profile ( 1.7 ).
• 8. The intermediate struts ( 1.5 ), as well as the front and end spar ( 1.4 ) are welded to the upper spar ( 1.3 ) and lower spar ( 1.2 ), thus creating the statically stable door construction.

Claims (6)

1. Sliding gate, which is attached in a lower beam as a C-profile, fixed support and support rollers and thus the sliding gate is moved horizontally self-supporting.
This sliding gate is characterized in that the bars ( 1.6 ) are not welded ver, but are fastened by a plug-in system. 2. Sliding gate according to claim 1, characterized in that the lattice rod ends ( 1.9 ) are expanded before being plugged into the holding profile ( 1.7 ) or pressed apart at points. 3. Sliding gate according to claims 1-2, characterized in that a special machine extends the ends of the bars ( 1.9 ). 4. Sliding gate according to claims 1-3, characterized in that the retaining profile ( 1.7 ) is welded to the upper spar ( 1.3 ) and lower spar ( 1.2 ) welded. 5. Sliding gate according to claims 1-4, characterized in that after pressing in the lattice rod ( 1.6 ) into the holding profile ( 1.7 ) and welding the intermediate struts ( 1.5 ) and front and end spar ( 1.4 ), the lattice bars ( 1.6 ) a fixed Have "fit" (press fit). 6. Sliding gate according to claims 1-5, characterized in that by the "plug system "of the bars they no longer have to be welded and thus the Zinc coating of the bars is not damaged.