CN203470576U

CN203470576U - Device for producing arc-shaped steel pipe

Info

Publication number: CN203470576U
Application number: CN201320520776.7U
Authority: CN
Inventors: 曲平福
Original assignee: HENAN PROVINCE CHIYUAN PETROLEUM CHEMICAL INDUSTRY MECHANICAL Co Ltd
Current assignee: HENAN PROVINCE CHIYUAN PETROLEUM CHEMICAL INDUSTRY MECHANICAL Co Ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2014-03-12
Anticipated expiration: 2023-08-26

Abstract

The utility model discloses a device for producing an arc-shaped steel pipe, and the device comprises a heating boiler which is used for heating the steel pipe and enabling the steel pipe to be softened. The interior of the heating boiler is provided with a horizontal roller way which is used for bearing the steel pipe. A side of a steel-pipe outlet of the heating pipe is provided with a rotating arm which rotates around one end of the rotating arm, and the other end of the rotating arm is fixedly connected with an end part of the steel pipe located inside the heating boiler. External power drives the rotating arm in order to drive the end part of the steel pipe to do circular motion, thereby pulling out the softened steel pipe in the heating boiler and bending the softened steel pipe for molding. According to the utility model, the steel pipe is softened at first and then the rotating arm drives the end part of the steel pipe to rotate. In this process, the steel pipe is bent by a certain radian under the action of a pulling force and the supporting force of the rotating arm. Arc-shaped steel pipes at various radians can be produced through adjusting the length of the rotating arm, thereby saving a large amount of dies. Moreover, the radians of the produced arc-shaped steel pipes are easy to control and adjust, the precision of the produced arc-shaped steel pipes is greatly improved, and the steel pipe structure is not damaged by a mechanical force.

Description

A kind of curved steel tube process units

Technical field

The utility model relates to the production and processing field of steel pipe, specifically a kind of curved steel tube process units.

Background technology

In reality is produced, often need to use curved steel tube, these curved steel tubes are all that straight steel pipe is bent into needed radian by certain means.In prior art, the method for steel pipe bending is all generally to adopt mechanical deflection, is prepared in advance and has the radian that will bend or the mould of shape, then steel pipe is placed on mould and to its continu to press, until it is fitted and complete making with mould.The machining accuracy of this mode is difficult to be guaranteed, and organizing also of steel pipe may sustain damage in process, the quality of the curved steel tube that impact is produced.For the ease of processing, also can steel pipe be heated to reduce its hardness on above basis, and then exert pressure and be pressed into needed radian to it, but still exist the problems referred to above.

Utility model content

In order to solve, the precision existing in compacting production curved steel tube in prior art is not high organizes the problems such as easy damaged with steel pipe, and the utility model provides a kind of curved steel tube process units.

The utility model is that the technical scheme that solves the problems of the technologies described above employing is: a kind of curved steel tube process units, comprise that one makes its softening heating furnace for heating steel pipe, in described heating furnace, be provided with for carrying the horizontal roller of steel pipe, one side in the steel pipe exit of heating furnace is provided with cursor, cursor rotates around the one end of himself, the other end is fixedly connected with the end of steel pipe in heating furnace, thereby external connection power drives cursor to drive the end of steel pipe to circle, arc is pulled out and be bent into steel pipe softening in heating furnace.

Described steel pipe after softening is the pulling force being subject in order to reduce its middle part on horizontal roller, the intensity that prevents from causing due to the impact of steel pipe gravity and resistance the excessive reduction curved steel tube of deflection at its end and middle part, the roller that horizontal roller is freely rotated by a row forms.

The length of described cursor is adjustable to change the curvature of steel pipe bending, thereby by controlling cursor length, realizes the curved steel tube of production different curvature radius, meets different needs.

Described heating furnace is for being heated to 870 ~ 970 ℃ by steel pipe, do not damage and changes under the prerequisite of steel pipe tissue guaranteeing, guarantees that it has good toughness and ductility, thereby is bent specific arc.

Beneficial effect: the utility model first drives its end to rotate the softening cursor that then uses of steel pipe, in this process, steel pipe is bent into certain radian under the effect of the support force of pulling force and cursor, this radian is the center of circle with take the other end of cursor, the a certain section of circular arc radian that the cursor of take is radius is identical, by adjusting the length of cursor, can produce the curved steel tube of different radians, so not only saved a large amount of moulds, and the radian of the curved steel tube of producing is also easy to control and adjust, greatly improved the precision of the curved steel tube of producing, nor can cause steel pipe tissue to be damaged by mechanical force.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Reference numeral: 1, heating furnace, 2, horizontal roller, 3, steel pipe, 4, cursor.

The specific embodiment

As shown in the figure, a kind of curved steel tube process units, comprise that one makes its softening heating furnace 1 for heating steel pipe 3, in described heating furnace 1, be provided with for carrying the horizontal roller 2 of steel pipe 3, one side in the steel pipe exit of heating furnace 1 is provided with cursor 4, cursor 4 rotates around the one end of himself, the other end is fixedly connected with the end of steel pipe 3 in heating furnace 1, thereby external connection power drives cursor 4 to drive the end of steel pipes 3 to circle, arc is pulled out and be bent into steel pipe softening in heating furnace 13.

In the utility model, by power drive, it circles cursor 4 within the specific limits, steel pipe 3 ends are in the process of rotating with cursor 4, its end can drive the middle part of steel pipe 3 to travel forward and keep its linear inertia, like this, the front portion of steel pipe 3 circles, and rear portion still travels forward under the effect of pulling force, and then is bent into arc.Because steel pipe 3 itself has certain weight, pull steel pipe 3 to advance and just must overcome the impact of this part of gravity, in order to prevent causing steel pipe 3 to be organized by wall thickness attenuation and steel pipe 3 that too stretching causes the problem changing in drawing process because steel pipe 3 is too softening, heating furnace 1 should be heated to 870 ~ 970 ℃ by steel pipe 3.

In the utility model, driving the power of cursor 4 can be piston-cylinder or hydraulic jack, and the flexible cursor 4 that drives by piston rod in oil cylinder rotates, and can be also other mechanism that rotational power is provided;

In the utility model, the object of described heating furnace 1 is that steel pipe 3 is heated to certain temperature, and the equal indefinite of its structure and principle of heating, as long as can realize above-mentioned functions, preferably adopt eddy heating for heating, structure is similar to the heating furnace of the eddy heating for heatings such as intermediate-frequency heating furnace or dielectric heating oven.

Be more than basic embodiment of the present utility model, can on above basis, make and improve and optimize:

As, in order to reduce the impact of steel pipe 3 self gravitations on machining accuracy and crudy, the pulling force that steel pipe 3 after softening is subject to reduce steel pipe 3 middle parts on horizontal roller 2, the roller that horizontal roller 2 is freely rotated by a row forms, so only need relatively little pulling force can make steel pipe 3 travel forward and keep its motional inertia, thereby improved machining accuracy, also guaranteed crudy (the strength decreased problem that there will not be wall thickness to cause due to tension-thining);

In order to meet the requirement of producing differently curved radian steel pipe, can make the length of cursor 4 adjustable, can adjust the curvature that changes steel pipe 3 bendings by the length of cursor 4 like this, can be by the following method but be not limited only to following methods and realize in order to realize that cursor 4 length are adjustable:

Cursor 4 is arranged to tubular elements and is set in the rod-like element in tubular elements, and rod-like element fixes its position in tubular elements, position by bolt etc., can be by rod-like element the length in tubular elements adjust the total length of cursor 4;

Can certainly be arranged to the structure that screw rod and sleeve match.

Claims

1. a curved steel tube process units, comprise that one makes its softening heating furnace (1) for heating steel pipe (3), it is characterized in that: in described heating furnace (1), be provided with the horizontal roller (2) for carrying steel pipe (3), one side in the steel pipe exit of heating furnace (1) is provided with cursor (4), cursor (4) rotates around the one end of himself, the other end is fixedly connected with the end of steel pipe (3) in heating furnace (1), external connection power drive cursor (4) to drive steel pipe (3) thus end circle arc is pulled out and be bent into steel pipe (3) softening in heating furnace (1).

2. a kind of curved steel tube process units according to claim 1, is characterized in that: the roller that described horizontal roller (2) is freely rotated by a row forms.

3. a kind of curved steel tube process units according to claim 1, is characterized in that: the length of described cursor (4) is adjustable to change the curvature of steel pipe (3) bending.