CN204782201U - Steel pipe pole is with steel pipe cross arm of eight arris variable cross sections - Google Patents

Abstract

The utility model provides a steel pipe pole is with steel pipe cross arm of eight arris variable cross sections which constitutes and includes: some devices, flange are hung to cross arm main part, wire, the cross -section of cross arm main part is regular octagon, the cross arm main part is trapezoidal along length direction's cross -section, cross arm main part front end is provided with the horizontally wire and hangs some devices, cross arm main part rear end and flange fixed connection be equipped with the pavement above the cross arm main part. The beneficial effects are that: the cross arm main part adopts eight arris variable cross section steel pipes, and only the longitudinal joint along steel pipe length needs the welding, the processing work load that significantly reduces, and the cross arm adopts flange joint with the body of rod, and is firm reliable.

Description

An octagonal steel pipe cross-arm with variable cross-section for steel pipe poles

technical field

The utility model relates to a cross arm, in particular to an octagonal steel pipe cross arm with variable cross-section for a steel pipe rod, which belongs to the technical field of steel pipe rods for transmission lines.

Background technique

With the rapid development of the country's national economy, the investment in power infrastructure is increasing, and the use of steel pipe poles for transmission lines is increasing. The market demand for steel pipe poles for 220kV transmission lines is very large. However, the cross arm of steel pipe poles has always used a box-shaped structure in the past, and the connection with the pole body is by plugging. The cross arm processing requires four steel plates to be assembled and welded. The welding volume is large and the processing is difficult. Moreover, the connection with the rod body adopts a plug-in method, which easily leads to deformation of the connection.

Utility model content

The utility model aims at the deficiencies in the above-mentioned prior art, and provides an octagonal cross-section steel pipe cross-arm for a steel pipe pole.

The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a steel pipe cross-arm with octagonal variable cross-section for a steel pipe rod, which consists of: a cross-arm main body, a wire hanging point device, a connecting flange, and the cross-arm main body It is a regular octagon, the section of the main body of the cross arm is trapezoidal along the length direction, the front end of the main body of the cross arm is provided with a horizontal wire hanging point device, and the rear end of the main body of the cross arm is fixedly connected with the connecting flange. There is a walkway above the cross arm.

Further, the walkway connecting angle steel is welded on the main body of the cross arm, and the elevation angle a of the main body of the cross arm is 4°.

Further, the walkway includes two angle steels one, round steel and handrails, the two angle steels are parallel in the horizontal direction, the round steel is welded between the two angle steel ones, and the outside of the angle steel one is welded with handrails.

Further, the wire hanging point device is composed of two angle steels, and there are three holes with the same spacing on the two angle steels.

Further, the main body of the cross arm is connected to the steel pipe rod through a connecting flange, and the connecting flange is a square steel plate, and 24 through holes are arranged around the connecting flange.

Further, the walkway connecting angle steel is connected to the angle steel one by bolts.

The beneficial effects of the utility model are:

1. The utility model is a new type of variable cross-section octagonal steel pipe cross arm. The main body of the cross arm is an octagon variable cross-section steel pipe. Only one longitudinal seam along the length direction of the steel pipe needs to be welded, which greatly reduces the processing workload.

2. The cross-arm and rod body are connected by flange, which is more stable and reliable than the previous plug-in method.

3. The cross arm is tilted up 4°, which avoids the phenomenon that the entire rod body is inclined due to the gravity of the line when the cross arm is sagging.

Description of drawings

Accompanying drawing 1 is the utility model front view.

Accompanying drawing 2 is a top view of the utility model.

Accompanying drawing 3 is a side view of the utility model.

Accompanying drawing 4 is the structure diagram of the connection flange of the utility model.

Accompanying drawing 5 is the structure schematic diagram of the wire hanging point device of the present invention.

Detailed ways:

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

A steel pipe cross-arm with octagonal variable cross-section for a steel pipe rod, which consists of: a cross-arm main body 2, a wire hanging point device 5, and a connecting flange 1. The cross-arm main body 2 has a regular octagonal cross-section, and the regular octagon is Regular octagon, the cross-arm main body 2 has a trapezoidal cross-section along the length direction, that is, the distance between the opposite sides of the regular octagon at the front end of the cross-arm is smaller than the distance between the opposite sides of the regular octagon at the rear end of the cross-arm. In the case of ensuring the structural strength, The front end of the cross arm will be relatively light. In the case of hanging wires, it can well ensure that the cross arm will not sag. The thickness of the steel plate of the cross arm body 2 is 6mm, and the material is Q345B. The front end of the cross arm body 2 is equipped with a horizontal wire hanging point In the device 5, the rear end of the cross-arm main body 2 is fixedly connected with the connecting flange 1, and a walkway 3 is arranged on the cross-arm main body 2.

The aisle connection angle steel 6 is welded on the main body 2 of the cross arm. The elevation angle a of the main body of the cross arm is 3°~8°. The degree of the elevation angle a can be adjusted and set according to the distance of the steel pipe pole and the downward tension of the hanging wire , so that the crossarm does not sag under the condition of different tension of the hanging wire.

Walkway 3 comprises two angle steel one 8, round steel 7, handrail 4, and the outside of angle steel one 8 is welded with handrail 4, guarantees the safety of construction personnel when working on the walkway.

The wire hanging point device 5 is made up of two angle steels 29, and the distance between the angle steels 2 can be set according to actual construction needs. Meanwhile, the quantity of the angle steel 2 in the wire hanging point device can also be increased or decreased in the actual application process. And two are the most commonly used quantity, process 3 holes 10 on angle steel two 9, as hanging wire insulator string, can hang single string and double string simultaneously.

The main body of the cross arm 2 is connected with the steel pipe rod through the connecting flange 1, which is a Q345 square steel plate, and 24 through holes 11 are arranged around the flange, which are used to connect with the connecting flange on the steel pipe rod body.

The connection hole processed on the lower limb surface of the angle steel-8 is bolted to the connection angle steel 6 on the cross arm.

The manufacturing and installation process is as follows: according to the size and length of the cross-arm of the octagon variable-section steel pipe, and according to the expanded size of the cross-arm section of the octagon variable-section cross-arm, the 6mm thick Q345B steel plate is used for blanking, and the large and small steel plates are divided into 8 parts equally. Bending on the bending machine, folded into regular octagonal steel pipes, and welded the seams and longitudinal seams of the folded octagonal steel pipes to form the main body of the cross arm; then weld the connecting flange at the rear end of the cross arm , Weld two angle steels at the front end of the cross arm; weld the aisle connection angle steel on the cross arm body, the aisle with handrails and the connection angle steel on the cross arm are fixed by bolt connection, and the welded cross arm is fixed by the bolt and rod method The blue is connected to complete the assembly of the cross arm and the rod body.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. the steel pipe pole steel pipe cross-arm of eight rib variable cross-sections, its composition comprises: cross-arm main body, conducting wire hanging point device, adpting flange, it is characterized in that, the cross section of described cross-arm main body is octagon, described cross-arm main body cross section is along its length trapezoidal, described cross-arm body front end is provided with the conducting wire hanging point device of level, and described cross-arm body rear is fixedly connected with adpting flange, is provided with aisle at described cross-arm body upper.

2. the steel pipe pole according to claim 1 steel pipe cross-arm of eight rib variable cross-sections, is characterized in that, described cross-arm main body welds aisle connecting angle, and the elevation angle a of described cross-arm main body is 4 °.

3. the steel pipe pole according to claim 1 steel pipe cross-arm of eight rib variable cross-sections, it is characterized in that, described aisle comprises two angle steel one, round steel, handrails, two described angle steel are parallel in the horizontal direction, described round steel is welded between two angle steel one, and the outside of described angle steel one is welded with handrail.

4. the steel pipe pole according to claim 1 steel pipe cross-arm of eight rib variable cross-sections, is characterized in that, described conducting wire hanging point device is made up of two angle steel two, and described angle steel two has the hole that 3 spacing are identical.

5. the steel pipe pole according to claim 1 steel pipe cross-arm of eight rib variable cross-sections, is characterized in that, described cross-arm main body is connected with steel pipe pole by adpting flange, and described adpting flange is square steel plate, and the surrounding on described adpting flange is provided with 24 through holes.

6. the steel pipe pole according to claim 2 steel pipe cross-arm of eight rib variable cross-sections, is characterized in that, described aisle connecting angle and described angle steel one are bolted.