CN110965633A - Method for repairing old screw type gate - Google Patents

Abstract

The invention particularly relates to a method for repairing an old screw type gate; the method is characterized in that: comprises 1, taking a section of steel pipe with the diameter larger than that of a screw rod and splitting the steel pipe into two halves; 2. cutting a semi-circular opening on the side part of the two sections of channel steel, and then horizontally arranging and respectively welding the two sections of channel steel with the two semi-steel pipes; 3. respectively welding and fixing the two welding parts obtained in the step 2 with an embedded part or a gate groove on a well wall, ensuring that the screw rod is just wrapped in the middle of the steel pipe, and then welding the two half steel pipes again; and (4) performing a gate closing test after the constraint system is completed, and if the screw still bends and deforms to cause that the gate cannot be closed, continuously increasing the constraint system until the gate is successfully closed. The repairing method utilizes the restraint system to increase the bending resistance of the screw and prevent the screw from bending and deforming, thereby quickly solving the problem that the gate cannot be closed due to the increase of the friction force between the gate and the gate groove.

Description

Method for repairing old screw type gate

Technical Field

The invention relates to the field of foundation construction, in particular to a method for repairing an old screw type gate.

Background

When the sewage gravity pipe meets an urban bridge, the bridge is generally crossed by arranging the inverted siphon pipe. The screw type start-stop machine gate for controlling sewage, which is arranged on the bridge edge, increases the friction force between the gate slot and the gate due to long-term overhaul, and the bending deformation is caused due to insufficient bending resistance of the screw when the gate is closed, so that the gate cannot be closed. The main method for repairing at the present stage is to plug the pipe orifice to form a dry land construction condition and replace or repair the gate and the gate groove, and the method has high repairing cost and long time consumption.

Disclosure of Invention

The invention aims to overcome the defects and provide a restraint system to increase the bending resistance of the screw and prevent the screw from bending and deforming, thereby solving the problem that the gate and the gate groove are closed due to increased friction force.

In order to achieve the above object, the present invention is realized by:

a method for repairing an old screw gate comprises

Step 1, taking a section of steel pipe with the diameter not more than 1cm larger than that of an old screw rod, and axially cutting the steel pipe into two halves;

step 2, cutting semicircular openings on the side parts of the two sections of channel steel, and then horizontally arranging and respectively welding the two sections of channel steel with the two semi-steel pipes;

step 3, welding and fixing the two welding parts obtained in the step 2 with an embedded part or a gate groove on a well wall respectively, ensuring that the screw rod is wrapped in the middle of the steel pipe, and then welding the two half steel pipes again;

step 4, filling grease in the gap between the screw and the steel pipe to ensure lubrication;

and 5, performing a gate closing test after the constraint systems in the steps 1 to 4 are completed, and if the screw still bends and deforms to cause that the gate cannot be closed, continuously increasing the constraint systems until the gate is successfully closed.

The repairing method utilizes a constraint system consisting of channel steel, steel pipes and grease to be arranged on the wall of the gate well or the gate groove to increase the bending resistance of the screw rod and prevent the bending deformation of the screw rod, thereby quickly solving the problem that the gate cannot be closed due to the increase of the friction force between the gate and the gate groove.

Drawings

FIG. 1 is a schematic construction diagram of the repairing method.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in figure 1, a method for repairing an old screw type gate comprises

Step 1, taking a section of steel pipe 2 with the diameter not more than 1cm larger than that of an old screw 1, and axially cutting the steel pipe 2 into two halves;

step 2, cutting semicircular openings on the side parts of the two sections of channel steel 3, and then horizontally arranging and respectively welding the two sections of channel steel with the two semi-steel pipes;

step 3, welding and fixing the two welding parts obtained in the step 2 with an embedded part or a gate groove 6 on the well wall respectively, ensuring that the screw rod 1 is just wrapped in the middle of the steel pipe 2, and then welding the two half steel pipes again;

step 4, filling grease 4 in the gap between the screw rod 1 and the steel pipe 2 to ensure lubrication;

and 5, after the constraint system in the steps 1-4 is completed, a gate 5 closing test is carried out, if the screw 1 still bends and deforms to cause the gate 5 to be incapable of being closed, the constraint system can be continuously added until the gate 5 is successfully closed.

The repairing method utilizes a constraint system consisting of channel steel, steel pipes and grease to be arranged on the wall of the gate well or the gate groove to increase the bending resistance of the screw rod and prevent the bending deformation of the screw rod, thereby quickly solving the problem that the gate cannot be closed due to the increase of the friction force between the gate and the gate groove.

Claims (1)

1. A method for repairing an old screw type gate is characterized by comprising the following steps: comprises that

Step 1, taking a section of steel pipe with the diameter not more than 1cm larger than that of an old screw rod, and axially cutting the steel pipe into two halves;

step 2, cutting semicircular openings on the side parts of the two sections of channel steel, and then horizontally arranging and respectively welding the two sections of channel steel with the two semi-steel pipes;

step 3, welding and fixing the two welding parts obtained in the step 2 with an embedded part or a gate groove on a well wall respectively, ensuring that the screw rod is wrapped in the middle of the steel pipe, and then welding the two half steel pipes again;

step 4, filling grease in the gap between the screw and the steel pipe to ensure lubrication;

and 5, performing a gate closing test after the constraint systems in the steps 1 to 4 are completed, and if the screw still bends and deforms to cause that the gate cannot be closed, continuously increasing the constraint systems until the gate is successfully closed.

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