CN110429534A - Manufacturing Method of Horizontal Elbow of Trough Type Cable Tray - Google Patents

Abstract

The invention provides a method for making a horizontal elbow of a trough-type cable bridge, which is carried out according to the following steps: 1. Measure the two bridges that need to be connected by an elbow, and determine the prefabricated horizontal elbow angle α; 2. Calculate the side of the bridge Cutting length x: x=2b*tgα, where b is the width of the bridge; 3. Cut and remove the x length on the inner side of the bridge; take the x area as the base, make a vertical line on the bottom of the bridge, 3) and then draw the line Carry out cutting, only cut the bottom surface of the bridge frame and protect the outer edge of the bridge frame; 4. Fold the outer edge of the bridge frame in half at the apex of the vertical line, so that the bottom surfaces on both sides of the cutting seam overlap, and the gap part after cutting the inner edge is completely closed; 5. Drill holes on the overlapping bottom surface, fix them with galvanized square neck bolts, and install connecting plates at the knuckles formed by closing the inner sides to complete the horizontal elbow fixation. This method does not require electric welding and will not damage the anti-corrosion of the bridge material layers, reducing the workload of cutting, simple and easy, effectively shortening the construction period.

Description

Manufacturing Method of Horizontal Elbow of Trough Type Cable Tray

technical field

The invention relates to a method for manufacturing an elbow of a trough-type cable bridge, in particular to a method for manufacturing a horizontal elbow of a trough-type cable bridge.

Background technique

In the actual construction of the trough cable tray, the bridge horizontal elbow is expensive and often does not conform to the actual size of the site, which is easy to cause waste; if the non-standard bridge horizontal elbow is customized according to the actual measurement on site, the construction period will be seriously extended. Therefore, according to the complexity of the site, it is often necessary to make bridge horizontal elbows according to the actual site.

At present, the conventional method of making bridge horizontal elbows on site is: firstly cut the bridge according to the actual measurement on site, and then assemble and weld the cut materials. Due to the large amount of cutting and the need to use electric welding equipment for welding, the production period is long, and the production of horizontal elbows is the main content that affects the construction quality and construction speed of the bridge.

At the same time, electric welding damages the anti-corrosion layer (such as hot-dip galvanized layer) of the bridge frame, which makes it difficult to handle the anti-corrosion in the later stage and affects the appearance. It will also cause environmental pollution and affect the health of construction workers.

Therefore, considering comprehensively, in order to improve work efficiency, save costs and ensure construction quality, a method for quickly making bridge horizontal elbows on site is provided, which will play a positive role in improving the overall progress of the project.

Contents of the invention

The invention aims to solve the defect that the on-site horizontal elbow seriously slows down the construction period in the prior art.

In order to solve the above-mentioned technical problems, the present invention proposes a method for rapidly manufacturing a bridge horizontal elbow, and its specific technical scheme is:

A method for manufacturing a horizontal elbow of a trough-type cable tray, which is carried out according to the following steps:

First, measure the two bridges that need to be connected by an elbow to determine the prefabricated horizontal elbow angle α.

Secondly, calculate the side cutting length x of the bridge: x=2b*tgα, where b is the width of the bridge.

Third, cut the bridge frame: (1) cut and remove the x length on the inner side of the bridge frame; (2) take the x area as the base, make a vertical line on the bottom surface of the bridge frame, 3) then cut along the drawn line, only Cut the bottom of the bridge to protect the outside of the bridge.

Fourth, connect and fix: Fold the outer edge of the bridge frame in half at the apex of the vertical line, so that the bottom surfaces on both sides of the cut seam overlap, and the gap part after cutting the inner edge is completely closed.

Finally, drill holes on the overlapping bottom surfaces, fix them with galvanized square neck bolts, and install connecting plates at the knuckles formed by closing the inner sides to complete the horizontal elbow fixation.

This method is simple and easy, reduces the cutting workload, and effectively shortens the construction period; does not require electric welding equipment, does not produce harmful gases, reduces pollution, and is beneficial to the health of construction workers; it will not damage the anti-corrosion layer of the bridge material, and does not need to be carried out later. Anti-corrosion treatment; the bending angle can be adjusted arbitrarily according to the needs, reducing the production error, beautiful and convenient.

Description of drawings

Figure 1 cuts the x area on the inside edge;

Figure 2 cuts the bottom surface along the mid-perpendicular line;

Figure 3 bending bridge;

In the embodiment of Fig. 4, two x regions are cut for illustration;

Figure 5 is a schematic diagram of the fabricated 90-degree horizontal elbow structure.

In the figure, the inner edge 1, the bottom surface 2, the outer edge 3, the vertical line 4, the overlapping area of the bottom surface 5, the connecting plate 6, and the galvanized square neck bolt 7.

Detailed ways

The present invention is further described below: as shown in Figure 1-3, a method for manufacturing a horizontal elbow of a trough cable tray is carried out according to the following steps:

First, measure the two bridges that need to be connected by an elbow to determine the prefabricated horizontal elbow angle α.

Secondly, calculate the side cutting length x of the bridge: x=2b*tgα, where b is the width of the bridge.

Third, cut the bridge frame: 1) cut and remove the x length on the inner side 1 of the bridge frame; 2) take the x area as the base, and make a vertical line 4 on the bottom surface 2 of the bridge frame; 3) then cut along the drawn line, Only the bottom surface 2 of the bridge frame is cut and the outer edge 3 of the bridge frame is reserved.

Fourth, connect and fix: Fold the outer side 3 of the bridge frame in half at the vertex of the vertical line 4, so that the bottom surfaces on both sides of the cut seam overlap, until the notch on the inner side 1 is completely closed.

Finally, drill holes in the overlapping area 5 of the bottom surface, fix them with galvanized square neck bolts 7, and install connecting plates 6 at the knuckles formed by closing the inner sides 1 to complete the horizontal elbow fixation.

The manufacturing method of the horizontal elbow provided by the invention requires less welding, and the manufacturing speed is fast.

Below in conjunction with accompanying drawings 4 and 5, with an embodiment of the present invention, the specific manufacturing steps are described in detail:

In engineering, 90-degree elbows are very common. In this embodiment, a 90-degree right-angle horizontal elbow is prefabricated. In the present invention, two 45-degree elbows are combined into one 90-degree elbow structure to increase the bending radius of the cable.

The manufacture of the 90-degree horizontal elbow of the cable groove of the present invention is introduced as an example, specifically: the measured width of the cable groove is 400 mm wide, and the height of both sides of the cable groove is 100 mm.

In the first step, put b=400, α=45° into the formula x=2b*tgα, and get x=2*400*0.414=331.2mm

The second step is to cut according to the calculated length, as shown in Figure 4, cut two X-length gaps on the inner side of the bridge.

The third step is to draw two perpendicular lines on the bottom of the cable trough with X as the base, and then cut along the perpendicular lines.

Step 4: Fold the outer edge in half at the vertex of the slit, so that the bottom surface overlaps, until the two sides of the x gap on the inner edge are closed.

Finally, the overlapping area of the bottom surface is fixed with galvanized square neck bolts, and the connecting plate is installed at the knuckle position where the inner sides are closed. Fix the elbow structure.

The advantages of this production method: 1. No electric welding equipment is required, no harmful gas is produced, pollution is reduced, and it is beneficial to the health of construction workers; 2. The anti-corrosion layer of the bridge material will not be damaged, and no anti-corrosion treatment is required in the later stage; 3. Bending through The angle can be adjusted arbitrarily according to needs, reducing manufacturing errors, beautiful and convenient.

Claims (1)

1. a kind of channel-type cable bridge horizontal elbow production method carries out in the steps below:

Firstly, measurement needs to be arranged two gantries of elbow connection, the horizontal elbow angle [alpha] made in advance is determined；

Secondly, calculating gantry side Cutting Length x:x=2b*tg α, wherein b is gantry width；

Third cuts gantry: (1) the cutting removal x length on gantry inner side edge；(2) using the region x the bottom of as, in gantry Make perpendicular bisector on bottom surface, 3) then cut along setting-out, it only cuts open gantry bottom surface and protects gantry outer side edges；

4th, it is attached fixation: in vertical line apex by gantry outer side edges doubling, making the bottom surface overlapping of cutting seam two sides, until Barbed portion after inner side edge cutting fully comes together；

Finally, drilling on the bottom surface of overlapping, fixed with zinc-plated square neck bolt, and pacified at the dog-ear that inner side edge closes up composition Load fishplate bar is completed horizontal elbow and is fixed.