CN103296616A - Rigid crossing support and crossing method for construction of overhead transmission lines - Google Patents

Abstract

The invention discloses a rigid spanning support, in particular to a rigid spanning support and a spanning method for the construction of an overhead power transmission line spanning a railway bridge. It consists of a hanging basket for standing operators, one of the end faces of the hanging basket is provided with a pair of V-shaped outstretched horns, two pulleys are set on the top beam of the hanging basket, and the hanging basket is installed on the top of the boom of the crane . The present invention has the following advantages: due to the set hanging basket and the crane used to install the hanging basket, the hanging basket can be driven by the crane to complete the cable spanning, and the V-shaped protruding horns can prevent the cable from falling off during the cable spanning process , the set pulley is conducive to the smooth spanning of the cable. It has a simple structure, low cost, good safety and stability, no need for lap scaffolding, strong mobility, convenient operation and use, short construction period, and ensures the safety and stability of the equipment. construction safety.

Description

Rigid spanning support and spanning method for overhead transmission line construction

the

technical field

The invention relates to a rigid spanning support, in particular to a rigid spanning support and a spanning method for the construction of an overhead power transmission line spanning a railway bridge.

Background technique

The general construction plan for overhead transmission lines spanning railway bridges is to erect bamboo or steel pipe spanning frames on both sides of the railway, throw the guide ropes over the high-voltage railway lines, and then lay insulation nets for construction. The existing spanning frames used in spanning construction exist There are many disadvantages and hidden dangers, such as large overall frame size, low process efficiency, high cost, high time cost, low economic benefits, and poor safety and stability; for example, the high-speed railway accident on the Wenyong Line on July 23, 2011 Afterwards, the railway department's review of safety measures for cross-railway construction became more stringent.

Contents of the invention

The invention relates to a rigid spanning bracket and a spanning method for the construction of overhead power transmission lines with simple structure, low cost, good safety and stability, and capable of ensuring equipment safety and construction safety.

In order to solve the above technical problems, the rigid spanning bracket for overhead transmission line construction of the present invention includes a hanging basket for standing operators, one of the end faces of the hanging basket is provided with a pair of V-shaped protruding horns, and the hanging basket Two pulleys are arranged on the top beam, and the hanging basket is installed on the top of the boom of the crane.

The gondola is provided with a reinforced platform for the operator to stand on.

A spanning method for a rigid spanning support used in the construction of an overhead transmission line, comprising the following steps:

(1) Make two cranes with hanging baskets installed on the top of the boom park on both sides of the railway bridge, and two operators hold a guide rope and stand in the two hanging baskets;

(2) Lift the booms of the two cranes to the top of the railway bridge synchronously, and the two operators throw the two guide ropes to the middle of the railway bridge respectively, and a waiting staff member in the middle of the railway bridge throws the two guide ropes docking;

(3) The two cranes gradually rotate to a position parallel to the railway bridge and tighten the guide rope;

(4) The two cranes rotate to a position parallel to the railway bridge, the guide rope pulls the traction rope through the railway bridge, and at the same time fix the steel wire rope connected to the front end of the crane arm to the ground anchor on the ground;

(5) The traction rope pulls the cable through the railway bridge to complete the operation process.

The present invention has the following advantages:

Due to the set hanging basket and the crane used to install the hanging basket, the hanging basket can be driven by the crane to complete the cable crossing, and the V-shaped protruding horns can prevent the cable from falling off during the cable crossing process. The set pulley is beneficial The stable spanning of the cable has a simple structure, low cost, good safety and stability, no need for overlapping scaffolding, strong mobility, convenient operation and use, short construction period, and ensures equipment safety and construction safety.

Description of drawings

Fig. 1 is the front view structure schematic diagram of hanging basket among the present invention;

Fig. 2 is the side view structural representation of hanging basket among the present invention;

Fig. 3 is a structural schematic diagram of Step 1 in the spanning method of the present invention;

Fig. 4 is a schematic structural diagram of step two in the leaping method of the present invention;

Fig. 5 is a structural schematic diagram of step three in the leaping method of the present invention;

Fig. 6 is a structural schematic diagram of Step 4 in the spanning method of the present invention;

Fig. 7 is a schematic structural diagram of Step 5 in the spanning method of the present invention.

Detailed ways

The rigid spanning bracket and spanning method for overhead transmission line construction of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure, the rigid spanning bracket for overhead transmission line construction of the present invention includes a hanging basket 1 for a standing operator 5, and one end surface of the hanging basket 1 is provided with a pair of V-shaped protruding horns 2, Two pulleys 3 are arranged on the top beam of the hanging basket 1, and the hanging basket 1 is installed on the boom top of the crane 4, and the hanging basket 1 is provided with a reinforced platform for the operator to stand on.

Further wherein one of the pulleys is arranged on the top of the crossbeam for installing the overhanging horns 2, another pulley is installed in parallel on the top of the crossbeam for installing the overhanging horns 2 opposite sides, and the two pulleys are installed in the middle of the crossbeam at the same time, by The balance of this hanging basket is good.

A spanning method for a rigid spanning support used in the construction of an overhead transmission line, comprising the following steps:

(1) Make two cranes with hanging baskets installed on the top of the boom park on both sides of the railway bridge, and two operators hold a guide rope and stand in the two hanging baskets (Figure 1);

(2) Lift the booms of the two cranes to the top of the railway bridge synchronously, and the two operators throw the two guide ropes to the middle of the railway bridge respectively, and a waiting staff member in the middle of the railway bridge throws the two guide ropes Docking (Fig. 2);

(3) The two cranes gradually rotate to a position parallel to the railway bridge and tighten the guide rope (Figure 3);

(4) The two cranes rotate to a position parallel to the railway bridge, the guide rope pulls the traction rope through the railway bridge, and at the same time fix the steel wire rope connected to the front end of the crane arm to the ground anchor on the ground (Figure 4);

(5) The traction rope pulls the cable through the railway bridge to complete the operation process (Figure 5).

Claims (3)

1. A rigid spanning bracket for overhead transmission line construction, characterized in that it includes a hanging basket (1) for standing operators, and a pair of V-shaped overhangs are arranged on one end surface of the hanging basket (1). Claw (2), two pulleys (3) are arranged on the top beam of hanging basket (1), and described hanging basket (1) is installed on the boom top of crane (4). 2. The rigid spanning support for overhead power transmission line construction according to claim 1, characterized in that: the hanging basket (1) is provided with a reinforced platform for operators to stand on. 3. A spanning method of a rigid spanning support for overhead transmission line construction, characterized in that, comprising the following steps: (1) Make two cranes with hanging baskets installed on the top of the boom park on both sides of the railway bridge, and two operators hold a guide rope and stand in the two hanging baskets; (2) Lift the booms of the two cranes to the top of the railway bridge synchronously, and the two operators throw the two guide ropes to the middle of the railway bridge respectively, and a waiting staff member in the middle of the railway bridge throws the two guide ropes docking; (3) The two cranes gradually rotate to a position parallel to the railway bridge and tighten the guide rope; (4) The two cranes rotate to a position parallel to the railway bridge, the guide rope pulls the traction rope through the railway bridge, and at the same time fix the steel wire rope connected to the front end of the crane arm to the ground anchor on the ground; (5) The traction rope pulls the cable through the railway bridge to complete the operation process.

Images