CN111555218A

CN111555218A - Multilayer door-shaped cable bridge and application method

Info

Publication number: CN111555218A
Application number: CN202010584096.6A
Authority: CN
Inventors: 倪俣
Original assignee: MCC5 Group Shanghai Corp Ltd
Current assignee: MCC5 Group Shanghai Corp Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-08-18

Abstract

The invention discloses a multilayer door-shaped cable bridge, which comprises a plurality of door-shaped frame bodies arranged in parallel at intervals, a cross beam connected between the door-shaped frame bodies, a supporting arm upright post arranged above the cross beam, and a plurality of layers of bridge supporting arms arranged on the supporting arm upright post, wherein the bridge is arranged on the supporting arms in a layered manner. The device can effectively improve the bearing type of the bridge stand column, and ensures that the verticality of the bridge stand column is controlled within the deviation range allowed by the acceptance standard without deviation. Adopt door frame type support frame, improved stability, ensured construction application quality. All parts of the device are made of conventional steel structures, the method is simple, the device is convenient to install, the working efficiency is effectively improved, and the cost is saved.

Description

Multilayer door-shaped cable bridge and application method

Technical Field

The invention belongs to the field of bridge construction devices, and particularly relates to a multilayer door-shaped cable bridge and an application method thereof.

Background

The electric cable bridge is divided into a high-voltage cable bridge, a low-voltage cable bridge, a control cable bridge, a weak-current cable bridge and the like, wherein 5-6 layers of bridges are usually installed on one bridge upright post, the weight of a single high-voltage cable is heavier, taking a three-core cross-linked polyethylene insulated cable ZR-YJV 8.7/10KV 3X 240 cable as an example, the weight of the cable is 10323Kg/Km, the laying rate of the cable in the bridge is higher, and the requirement on the bearing support performance of the bridge upright post is high.

The traditional bridge mounting method is characterized in that 10# channel steel is welded on a steel structure to serve as a bridge upright post, bridge support arms are welded on the 10# channel steel, and each layer of bridge is mounted on the support arms. Adopt single 10# channel-section steel to make the stand under the fixed condition of steel construction not, subaerial 10# channel-section steel bottom plate of fixing with expansion screw, the bearing capacity of single stand is not enough, takes place the stand slope easily for a long time and collapses even. Therefore, the single-layer bridge frame upright column mounting mode needs to be improved and enhanced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the multi-layer door-shaped cable bridge and the application method thereof are provided, and the problem that the single-layer bridge stand column in the prior art is not enough in bearing capacity and is easy to incline and even collapse is solved.

The invention adopts the following technical scheme for solving the technical problems:

the utility model provides a multilayer door type cable testing bridge, includes a plurality of door type frame bodies of interval parallel arrangement, connects the crossbeam between the door type frame body, installs the trailing arm stand in the crossbeam top to and set up the multilayer crane span structure trailing arm on the trailing arm stand, the crane span structure layering sets up on the trailing arm.

The door-shaped frame body comprises frame stand columns and connecting rods, and the connecting rods are respectively arranged at the tops and the middle parts of the two frame stand columns.

The frame stand adopts two the same channel-section steels to weld relatively together, and the connecting rod between the stand adopts the channel-section steel structure welding.

And steel plates are welded below the frame upright columns and are fixed on the ground by expansion screws.

The cross beams between the door-shaped frame bodies are welded together by adopting two channel steel relatively.

The bracket arm upright post is welded on the cross beam by adopting a single channel steel.

The crossbeam, the bracket arm upright post and the bracket arm upright post are all made of 10# channel steel, and the bridge bracket arm is made of galvanized angle steel.

An application method of a multilayer door-shaped cable bridge comprises the following steps:

step 1, according to a design drawing, two channel steels are oppositely welded into a plurality of beams and frame upright columns;

step 2, welding a connecting rod at the top end and the middle of any two upright posts respectively to form a plurality of door-shaped frame bodies;

step 3, welding cross beams between the top ends of two adjacent door-shaped frame bodies in sequence;

step 4, welding a supporting arm upright post on the cross beam at a certain distance;

step 5, welding a plurality of parallel bridge bracket arms on the bracket arm upright posts in the vertical direction;

and 6, arranging a bridge on the bridge bracket arm.

Three bridge bracket arms are welded on the bracket arm upright post from top to bottom.

The bridge bracket arm is galvanized angle steel of L50 x 50 x 5.

Compared with the prior art, the invention has the following beneficial effects:

1. the device can effectively improve the bearing type of the bridge stand column, and ensures that the verticality of the bridge stand column is controlled within the deviation range allowed by the acceptance standard without deviation.

2. Adopt door frame type support frame, improved stability, ensured construction application quality.

3. All parts of the device are made of conventional steel structures, the method is simple, the device is convenient to install, the working efficiency is effectively improved, and the cost is saved.

Drawings

FIG. 1 is a schematic structural diagram of a multi-layer door type cable tray according to the present invention.

Wherein, the labels in the figure are: 1-frame posts; 2-a connecting rod; 3-a bracket arm upright post; 4-a bridge bracket arm; 5-cable bridge.

Detailed Description

The structure and operation of the present invention will be further described with reference to the accompanying drawings.

In a first embodiment, as shown in figure 1,

the utility model provides a multilayer door type cable testing bridge, includes a plurality of door type frame bodies of interval parallel arrangement, connects the crossbeam between the door type frame body, installs the trailing arm stand 3 in the crossbeam top to and set up multilayer crane span structure trailing arm 4 on the trailing arm stand, 5 layering settings of cable testing bridge are on the trailing arm.

The door-shaped frame body comprises frame upright posts 1 and connecting rods 2, and the top and the middle of each of the two frame upright posts are respectively provided with one connecting rod.

In this example, the gate frame assembly consists of 10# channel steel used as the gate frame body frame and the uprights and galvanized angle steel L50 x 50 x 5 used to make the bracket arms. Two upright columns of the portal frame are spliced and butt-welded by two 3-meter-long channel steel respectively, the middle and the top of each upright column are welded and connected by a 0.7-meter-long channel steel connecting rod respectively, 0.15 x 0.15 steel plate is welded at the bottom of each channel steel upright column, and the two upright columns are fixed on the ground by expansion screws.

and 6, arranging a bridge on the bridge bracket arm.

In a second embodiment of the present invention, a second,

step 1, according to a design drawing, two channel steels with the length of 3 meters are oppositely welded into a plurality of frame upright columns;

step 2, welding channel steel connecting rods with the length of 0.7 meter at the top ends and the middle parts of any two frame upright columns respectively to form a plurality of door-shaped frame bodies;

step 3, arranging door-shaped frames at intervals of 5 meters in sequence, welding 6 meters of channel steel between the top ends of two adjacent door-shaped frame bodies to serve as an auxiliary cross beam for connection, oppositely welding two 6 meters of channel steel to form a main cross beam, and welding the main cross beam to the top ends of two adjacent door-shaped frames to serve as a fixed point of a supporting arm stand column;

step 4, welding a supporting arm upright post on the main beam at intervals of 3 meters, wherein the supporting arm upright post is a single channel steel with the length of 1 meter;

step 5, welding three galvanized angle steels L50 with the length of 0.5 meter and 50 with the length of 5 meters in parallel in the vertical direction on the support arm upright column to serve as a bridge support arm;

and 6, arranging a bridge on the bridge bracket arm.

The invention and its features, aspects and advantages will become more apparent from the detailed description of non-limiting embodiments with reference to the following drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. The utility model provides a multilayer door type cable testing bridge which characterized in that: the bridge comprises a plurality of door-shaped frame bodies arranged in parallel at intervals, a cross beam connected between the door-shaped frame bodies, a supporting arm upright post arranged above the cross beam, and a plurality of layers of bridge supporting arms arranged on the supporting arm upright post, wherein the bridge is arranged on the supporting arms in a layered manner.

2. A multi-level gate cable tray as claimed in claim 1, wherein: the door-shaped frame body comprises frame stand columns and connecting rods, and the connecting rods are respectively arranged at the tops and the middle parts of the two frame stand columns.

3. A multi-level gate cable tray as claimed in claim 2, wherein: the frame stand adopts two the same channel-section steels to weld relatively together, and the connecting rod between the stand adopts the channel-section steel structure welding.

4. A multi-level gate cable tray as claimed in claim 2, wherein: and steel plates are welded below the frame upright columns and are fixed on the ground by expansion screws.

5. A multi-level gate cable tray as claimed in claim 1, wherein: the cross beams between the door-shaped frame bodies are welded together by adopting two channel steel relatively.

6. A multi-level gate cable tray as claimed in claim 1, wherein: the bracket arm upright post is welded on the cross beam by adopting a single channel steel.

7. A multiple layer gated cable tray as claimed in any one of claims 2 to 6, wherein: the crossbeam, the bracket arm upright post and the bracket arm upright post are all made of 10# channel steel, and the bridge bracket arm is made of galvanized angle steel.

8. An application method of a multilayer door-shaped cable bridge is characterized by comprising the following steps: the method comprises the following steps:

and 6, arranging a bridge on the bridge bracket arm.

9. The method of applying a multi-level gate cable tray as defined in claim 8, wherein: three bridge bracket arms are welded on the bracket arm upright post from top to bottom.

10. The method of applying a multi-level gate cable tray as defined in claim 9, wherein: the bridge bracket arm is galvanized angle steel of L50 x 50 x 5.