DE1534625A1 - Annular gap seal for jacking shields - Google Patents

Description

GBÜN & BIEPINGER AG

cnnn μ .i,. ^ τ Mannheim, October 9, 1968

6800 Mannheim 1 Pa / wH / hw, A 162

Karl-Eeiß-Platz 1-5

File number: P 15 34 625.5
Filing date ι October 21, 1966

New, complete documents for Bing gap seal for jacking shields

The invention relates to a Hingsp old seal for propulsion shields, one on the inside of the tail tail in a groove arranged, elastic sealing ring comprises, which consists of a hose with a covering this and on the outside of the tunnel lining there is a sliding wear band

The purpose of such seals is to protect against leakage of what is pressed in to seal the shield gap Mortar · Known are band-shaped bing gap seals, one of which is attached to the inside of the shield tail bleohes, while the free one Tongue-like tape on the outside of the tower liner glides «Between the shield tail and the tongue there is

New documents

909829/08 75 -2-

DBP. 1 197 914 an additional elastic foam rubber pad have been arranged with a smooth surface.

In another known shield design, the wear band consists of overlapping spring steel sheets and a hose (US Patent 794 633 »Fig. 3), Another known type of shoe uses wire hoses against air leakage from the inside of the shield and against water ingress from the outside, protected by a cover plate and a shoe (U.S. Patent 1,296,312).

These known designs have the disadvantage that the sealing effect is impaired or prevented by residual hearing material will. With the usual squeezing out of the hanging gap, it settles between the shield tail and the tongue Mortar that hardens due to lack of movement at this point, reducing the sealing effect of the Tongue is lost.

The grout, which, as is well known, splits into the Hing under increased pressure is pressed in at the end of the tail, penetrate and reach the hose «This can do its job, Pressing the spring steel sheets against the tunnel lining no longer fulfills when the grout is here sets.

Auen the wear band in the formation after the U.S. Patent 1,296,312 is not suitable

909829/0875

when pressing out the gap with grout to protect the sealing hose from contact with the grouting mortar

The invention is based on the object * to create a ring gap seal that has a complete Protection against the grout offers «

The object is achieved in that the hose as Hochdruoksohlauch formed and by an elastic, on both bands on the side of the visual tube in a groove attached wear tape on all sides before direct contact with the grout of the Is protected

The groove is preferably as far as the tail end arranged that the rear end at least a half (Ribbing width covered. ”This makes it possible to go after after pressing out, replace the wear band while the blade is in motion

Further features of the invention emerge from the Description of the drawing · The figure represents schematically a cross-section through the Hingspaltdiohtung. In the Schildsohwanzbleoh 1 a groove 2 is incorporated, in which a high pressure hose 3 is located and is covered by an elastic Versohleißband 4 " The bands of this wear band 4 are through terminal strips 5 and screws 6 held · Due to the overpressure, the Hochdrueksohlauoh 3 is stretched so that the

909829/0875 -4-

Wear band 4 even if the gap is wide the outside 7 of the! tubbing anaohmic · The liquid or gaseous pressure medium is the Hoohdruokeohlauoh through, a line 8 is fed, which is in the wall of the Sohildsohwanzes 1 is housed without damage and from inside the shoe to the pressure generator, e.g. a water, oil or air pump can be connected can Hit 9 denotes the grout of the Bing gap, 10 indicates the direction of movement of the Sohildsohwanzes

You are benefiting from this training following

The wear band and seal can easily be removed repaired or replaced with new ones «The Hoohdrucksohlauoh can withstand pressures of up to 50 atmospheres, whereby the compression pressure when backfilling the tubbings with mortar can be increased significantly. When reducing the width of the opening, the abrasion band can be elastically shortened and can be tightened with the sole the hat snugly

This hose also offers the option of using Druokveohsels a hardening of the grout Prevent movement or loosen hardened parts from the seal · It is crucial that the mortar of the Ame elasticity-causing filing of the seal is kept away and he does not have this elasticity either can influence "

909829/08 7 5 BAD_OR.e, _N AL

Claims

Claims (2)

P A Φ E N Τ A N S P B Ü O H E ι Hing gap seal for jacking shields, the one on the inside of the tail in a hat, elastic sealing ring comprises, which consists of a hose with a covering this and on the outside of the tunnel lining sliding abrasion band, characterized in that that the hose is designed as a high-pressure hose (3) and an elastic one on both straps Wear band (4) attached to the side of the hose in the groove (2) on all sides in front of the direct contact with the grout (9) of the hanging gap is protected 2. Hing gap seal according to claim 1, characterized characterized in that the groove (2) is arranged so far from the tail end that the rear end covers at least half a segment width. Documents considered: DBP No. 1 197 914
U.S. PS No. 1,296,312
USA PS Nre 794 633 90982 9/08 7 5 n (Art, 7 § 1 Paragraph 2 No. 1 Sofc 3 "U * AiHd.runflsg". v. 4.9.1967). L e r s e i t e