CN103486330B - Either inside high-altitude pipeline mounting construction method - Google Patents

Abstract

The invention relates to a construction method for installing high-altitude pipelines in the workshop of a metallurgical steelmaking workshop. The steps are: setting up tooling on the trolley of the crane, including brackets for supporting the pipeline and holding poles for lifting the pipeline; beveling the pipeline on the ground Processing, rust removal, and painting process construction; use the crane in the workshop to inspect and repair the electric hoist to hoist the pipeline, and the hoisting height exceeds the height of the crane; run the crane to the bottom of the crane for inspection and repair of the electric hoist; run the trolley, put the pipe on the tooling, and carry out Properly fix; run the crane to transport the pipeline to the installation location; use the hoisting chain hoist bolted on the tooling to lift the pipeline; run the trolley to transport the hoisted pipeline above the installation location of the pipeline, and then drop the pipeline on the Installed in place on the pipe support. The invention utilizes the characteristics of high installation position of electric hoist for inspection and maintenance of the crane and the mobility of the crane, and uses the crane as a transitional carrier to complete the installation of the pipeline under the premise of safe and reliable operation and great cost savings.

Description

Construction method of high-altitude pipeline installation in the workshop

technical field

The invention relates to a high-altitude pipeline installation method in which the pipeline position is above the running track of a crane, in particular to a method for installing a high-altitude pipeline inside a workshop of a metallurgical steelmaking plant.

Background technique

At present, in order to save space, production needs and safety reasons, process pipelines in metallurgical steelmaking workshops, such as gas pipelines, liquefied petroleum gas pipelines, propane gas pipelines, oxygen pipelines, etc., are generally set above the overhead traveling platform of the workshop. The process piping is placed at a high altitude, which increases the difficulty of installation. In the past, pipeline installation and construction used truck cranes for pipeline hoisting. The installation process was greatly restricted by the ground site conditions, and safety scaffolding was required for high-altitude operations, which was costly.

Contents of the invention

The present invention aims to solve the above-mentioned problems existing in the existing high-altitude pipeline installation method, and provides a mobile hoist that utilizes the crane maintenance electric hoist installation position higher than the crane, and uses the crane as a transition carrier, which is safe and reliable in operation. And under the premise of greatly saving costs, the construction method of high-altitude pipeline installation inside the workshop that completes pipeline installation is completed.

The technical scheme that the present invention solves its technical problem adopts is:

A construction method for installing high-altitude pipelines inside a workshop, which is carried out according to the following steps:

(1) Set up tooling on the trolley running the crane: the tooling includes two brackets fixed on the load-bearing beam of the trolley running the crane, and the brackets are respectively fixed with brackets for supporting the pipes and used for hoisting pipelines. the pole;

(2) Ground pipeline prefabrication: According to the installation size of the pipeline, the groove processing, rust removal and painting processes are carried out on the ground;

(3) Pipe hoisting and placing on the tooling: use the crane inspection electric hoist in the workshop to hoist the pipeline, the hoisting height exceeds the height of the crane; run the crane to the bottom of the crane inspection electric hoist; run the trolley, put the pipeline on the tooling, be properly fixed;

(4) Use the tooling to install the pipeline in place: run the crane to transport the pipeline to the installation location; use the hoisting bolt on the tooling pole to lift the pipeline with a hand chain hoist; run the trolley to transport the hoisted pipeline to Above the installation position of the pipe, then drop the pipe onto the pipe support and install it in place.

Further, the tooling is composed of two door-shaped brackets located at both ends of the load-bearing beam of the traveling trolley of the crane and welded and fixed to the load-bearing beam; It is composed of a saddle bracket, welding and fixing on the door-shaped bracket and adding a cable-stayed pole for hoisting the pipeline. The upper surface level of the two door-shaped brackets is higher than the height of the equipment on the trolley. There are chain hoists for hoisting.

Compared with the prior art, the present invention adopts the above-mentioned technical solution, utilizes the characteristics of the high installation position of the electric hoist for the maintenance of the crane and the mobility of the crane, and uses the crane as a transition carrier, which is safe and reliable in operation and greatly saves costs Completed the installation of pipeline under the premise, its invention effect is:

The pipeline installation process is not limited by any ground site conditions. The personnel work on the crane platform, which improves the safety of the personnel working surface; the existing resources of the plant are used for construction, which reduces the construction machinery hoisting cost, reduces the construction cost, and shortens the construction period. The construction period improves the construction efficiency; the tooling is simple to make, and the materials can be made from the remaining waste on site, saving costs.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the tooling of the embodiment of the present invention.

Figure 2 is a schematic diagram of the hoisting pipeline of the electric hoist for the maintenance of the crane.

Figure 3 is a schematic diagram of the crane running to the bottom of the electric hoist for crane maintenance.

Figure 4 is a schematic diagram of the trolley running to the bottom of the electric hoist for maintenance of the crane.

Figure 5 is a schematic diagram of the pipeline being placed on the tooling.

Fig. 6 is a schematic diagram of transporting the pipeline hoisted by the chain to the top of the pipeline installation position.

Fig. 7 is a schematic diagram of installation of the pipeline on the pipeline support.

In the figure: crane trolley 1, door-shaped support 2, saddle bracket 3, holding pole 4, hand chain block 5 for hoisting, crane 6, crane maintenance electric hoist 7, pipeline 8, pipeline support 9.

Detailed ways

The present invention will be further described below in conjunction with the examples, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

This embodiment is the construction of a gas pipeline in a 120-ton converter steelmaking workshop. The specific pipeline installation process is as follows:

1. Referring to Figure 1, set up tooling on the running trolley of the crane:

(1) First make the saddle bracket 3 of the corresponding pipe diameter according to the drawings of the Design Institute;

(2) Weld two door-shaped brackets 2 on the load-bearing beam (beam) of the crane trolley 1 to ensure the overall stability of the door-shaped bracket 2. The horizontal height of the upper surface of the door-shaped bracket 2 should be higher than that of the crane trolley 1 The height of the equipment is so that the pipeline can be placed horizontally on the door-shaped bracket 2 without being affected by the trolley equipment.

(3) Weld the saddle bracket 3 to the door bracket 2, and the contact surface should be welded firmly.

(4) Weld the hoisting pole 4 on the door-shaped bracket 2 to hoist the pipeline. The pole 4 is equipped with a cable stay to ensure the stability of the pole 4. The upper bolt of the pole 4 is hung with a hand pull for hoisting. Calabash 5.

2. Ground pipe prefabrication:

According to the installation size of the pipeline, the groove processing, rust removal, painting and other processes are carried out on the ground.

3. The pipe is hoisted and placed on the tooling:

Referring to Fig. 2, the hoisting of the pipeline 8 is carried out by using the electric hoist 7 for maintenance of the crane in the factory building, and the hoisting height exceeds the height of the crane 6;

Referring to Fig. 3, run the crane 6 under the electric hoist 7 for crane maintenance;

Referring to Fig. 4, run the crane trolley 1 under the crane maintenance electric hoist 7, put the pipeline 8 on the saddle bracket 3 of the tooling through the crane maintenance electric hoist 7, and fix it properly.

4. Use the tooling to put the pipe in place:

Referring to Fig. 5, run the crane 6, and send the crane trolley 1 carrying the pipeline 8 to the side where the pipeline 8 is installed;

Referring to Fig. 6, the pipeline 8 is hoisted by the hoisting hand chain hoist 5 bolted on the tooling, lifted to the installation elevation of the pipeline 8, and then the crane trolley 1 is run above the installation position of the pipeline 8;

Referring to Fig. 7, the pipeline 8 is dropped on the pipeline support 9 by hoisting with a hand chain hoist 5 and installed in place.

Claims (2)

1. an either inside high-altitude pipeline mounting construction method, is characterized in that, carries out in the steps below:

(1) on overhead traveling crane running trolley, set up frock: described frock comprises two portal trestles be fixed on overhead traveling crane running trolley machine supporting beams, described two portal trestles be fixed with respectively the bracket of support pipeline and be used for lifting the pole of pipeline;

(2) surface duct is prefabricated: according to Pipe installing size, carries out retaining wall on slope and rust cleaning, painting process construction on ground;

(3) lifting pipeline is put in above frock: utilize vehicle overhauling electric hoist in sky in factory building to carry out lifting pipeline, hoisting height exceedes a day height; Run below overhead traveling crane to sky vehicle overhauling electric hoist; Running trolley, is put in pipeline above frock, suitably fixes;

(4) utilize frock that Pipe installing is in place: to run overhead traveling crane, pipeline is transported to mounting point; The lifting chain block that on frock pole, bolt is hung is utilized to be sling by pipeline; Running trolley, transports to the pipeline sling above Pipe installing position, then pipeline is dropped on installation in position on pipe support.

2. either inside high-altitude according to claim 1 pipeline mounting construction method, it is characterized in that, described frock is by being positioned at overhead traveling crane running trolley machine supporting beams two ends and two portal trestles be welded and fixed with machine supporting beams, the saddle bracket matched with mounted pipe diameter be weldingly fixed on described portal trestle, being weldingly fixed on described portal trestle and adding the pole that oblique pull is used for lifting pipeline and form, two portal trestle upper surface level heights are higher than device height on dolly, and pole top bolt hangs with lifting chain block.