CN214024190U

CN214024190U - Radial hole pulling device applied to steel pipe

Info

Publication number: CN214024190U
Application number: CN202022969067.XU
Authority: CN
Inventors: 袁圆; 张兰勇
Original assignee: Hefei Zhongchen Light Industrial Machinery Co Ltd
Current assignee: Hefei Zhongchen Light Industrial Machinery Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-08-24
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a be applied to radial hole device of pulling out of steel pipe relates to pipeline welding technical field. The utility model discloses a frame, frame internal fixation are provided with flexible subassembly, and flexible subassembly includes the axis of rotation, and the frame upper surface is provided with the supporting seat, and surface connection has the lower mould on the supporting seat, and the slotted hole has been seted up along radial direction to the lower mould, and clearance fit has the pullout in the slotted hole, and the screw hole has been seted up to the pullout tip, and the pullout lateral wall can be dismantled and be connected with the propelling movement pole, and the axis of rotation passes the slotted hole and pulls out first threaded connection. The utility model has the advantages that the welding quality is greatly improved, the labor intensity of welders is reduced, and the manufacturing cost is reduced by directly butt-welding after the holes are pulled out; in addition, according to various drawing requirements, the structure is properly changed, and the drawing hole processing on planes and various complex curved surfaces can be realized.

Description

Radial hole pulling device applied to steel pipe

Technical Field

The utility model belongs to the technical field of the pipe welding, especially, relate to a be applied to radial hole device of pulling out of steel pipe.

Background

The pipeline systems of series products such as filling machines, mixing machines, sterilization machines and the like all need to meet the requirement of sanitary level, the trend of the pipeline systems is criss-cross and complicated, and the pipeline systems have a large number of tee joints and four-way joints. At present, the welding connection mode is the main connection mode of a pipeline system, and two design schemes of direct welding and drilling butt welding of a purchased standard tee pipe fitting are basically adopted.

And (3) drilling and welding, namely adopting main pipe radial drilling, milling a combined arc surface at the combined end of each branch connecting pipe, and then assembling and welding the main pipe and each branch pipe. The process method has the problems of insufficient roundness of the drilled hole, deformation of the sanitary pipe (thin-wall pipe) during processing and large clearance of the Haff combined surface, and the welding seam is a combined intersecting line and the welding difficulty of a curved welding seam is high, thereby causing hidden troubles of welding quality, such as: the welding seam is easy to leak, the surface quality of the welding seam is poor, the inner welding seam can not be polished, and the sanitation is not up to the standard. Meanwhile, the drilling and milling of holes and the processing of arc surfaces of pipe ends are difficult, the processing cost is high, and in addition, the purchasing of standard tee joint and four-way pipe fittings for welding also increases the purchasing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a radial hole pulling device applied to a steel pipe, which can directly perform butt welding after hole pulling, thereby greatly improving the welding quality, reducing the labor intensity of welders and reducing the manufacturing cost; in addition, according to various drawing requirements, the structure is properly changed, and the drawing hole processing on planes and various complex curved surfaces can be realized.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a be applied to radial hole device of pulling out of steel pipe, the frame internal fixation is provided with flexible subassembly, and flexible subassembly includes the axis of rotation, and the frame upper surface is provided with the supporting seat, and the supporting seat upper surface is connected with the lower mould that is used for placing the steel pipe, and the slotted hole has been seted up along radial direction to the lower mould, and clearance fit has the puller in the slotted hole, and the puller tip sets up threaded hole, and the puller lateral wall can be dismantled and be connected with the push rod, and the axis of rotation passes the slotted hole and pulls out a threaded connection.

Further, the slotted hole is set to be an arc-shaped slot matched with the steel pipe.

Furthermore, the side wall of the rotating shaft is symmetrically provided with a positioning sleeve for positioning the pulling head.

Further, the height and the diameter of the pulling head are both smaller than the diameter of the steel pipe.

Furthermore, the telescopic assembly is an automatic telescopic assembly, and the telescopic assembly is electrically connected with the control cabinet.

Furthermore, the lower end of the frame is provided with a plurality of universal caster wheels.

The utility model discloses following beneficial effect has:

1. the utility model discloses a pull out direct butt welding behind the hole to improve welding quality by a wide margin, reduce welder's intensity of labour, reduce manufacturing cost.

2. The utility model discloses according to multiple drawing die needs, through suitably changing the structure, can realize the hole processing of pulling out on plane and all kinds of complicated curved surfaces.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a radial hole pulling device applied to a steel pipe according to the present invention;

FIG. 2 is a left side view of the radial hole drawing device;

FIG. 3 is a partial view of A in FIG. 2;

in the drawings, the components represented by the respective reference numerals are listed below:

1-a frame, 2-a supporting seat, 3-a telescopic assembly, 4-a rotating shaft, 5-a pulling head, 6-a lower die, 7-a positioning sleeve, 8-a universal caster foot, 9-a pushing rod, 10-a control cabinet, 11-an oil cylinder and 601-a slotted hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open", "up", "down", "height", "side wall", "middle", "diameter", "inner", etc. indicate positional or positional relationships, merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced assembly or component must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Please refer to fig. 1 to 3, the utility model relates to a radial hole pulling device for steel pipe, which comprises a frame 1, frame 1 internal fixation is provided with flexible subassembly 3, flexible subassembly 3 includes axis of

rotation

4, 4 lateral walls of axis of rotation symmetry is provided with carries out the position sleeve 7 of fixing a position to pulling head 5, frame 1 upper surface is provided with supporting

seat

2, 2 upper surface of supporting seat is connected with the lower mould 6 that is used for placing the steel pipe, lower mould 6 has seted up slotted hole 601 along radial direction, slotted hole 601 sets up to the arc wall with steel pipe matched with, clearance fit has pulling head 5 in the slotted hole 601, the screw hole has been seted up to pulling head 5 tip, pulling head 5 lateral wall can be dismantled and be connected with push rod 9, pulling head 5 is threaded connection with

push rod

9, 4 upper ends of axis of rotation pass the slotted hole and pull head 5 threaded connection.

Preferably, the height and diameter of the drawing head 5 are smaller than the diameter of the steel pipe, so that the drawing head 5 can protrude into the steel pipe.

Preferably, the telescopic assembly 3 is an automatic telescopic assembly, the telescopic assembly 3 is electrically connected with a control cabinet 10, and the telescopic assembly further comprises an oil cylinder 11.

Preferably, the lower end of the frame 1 is provided with a plurality of universal caster wheels 8, and the universal caster wheels 8 are provided with brakes.

One specific application of this embodiment is: taking the example of radially drawing a hole with the outer diameter of phi 38.1 on a steel pipe with the outer diameter of phi 50.8 as an example, the steel pipe is a 304 stainless steel sanitary pipe, and the process is as follows:

firstly, pre-drilling holes are machined at positions of a phi 50.8 steel pipe needing hole drawing in the radial direction, the steel pipe is placed at a corresponding position of a lower die 6, wherein the pre-drawing holes are approximately aligned with forming holes of the lower die 6, a push rod 9 is used for connecting a drawing head 5 and pushing the drawing head 5 to the pre-drawing hole position from a pipe end, a connecting shaft 4 is provided with a positioning sleeve 7 and is screwed with the drawing head 5, so that the drawing head and the pre-drawing holes are centered and positioned, and uniform symmetry of the flanging size of the drawing die is ensured; then the pushing rod 9 is removed, the connecting shaft 4 is connected with the oil cylinder 11, a 'descending' button of the control cabinet 10 is started, the pulling head 5 is pulled out through the hydraulic power of the oil cylinder 11, and the phi 38.1 hole can be pulled out under the co-forming action of the pulling head 5 and the lower die 6.

If the next hole pulling operation is carried out, namely the pulling head 5 is unscrewed, the above actions are repeated.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a be applied to radial hole device of pulling out of steel pipe, includes frame (1), its characterized in that: frame (1) internal fixation is provided with flexible subassembly (3), flexible subassembly (3) include axis of rotation (4), frame (1) upper surface is provided with supporting seat (2), supporting seat (2) upper surface is connected with lower mould (6) that are used for placing the steel pipe, slotted hole (601) have been seted up along radial direction in lower mould (6), slotted hole (601) internal clearance fit has pull head (5), pull head (5) tip set up threaded hole, pull head (5) lateral wall can be dismantled and be connected with push rod (9), axis of rotation (4) are passed slotted hole and pull head (5) threaded connection.

2. A radial drawing device applied to a steel pipe according to claim 1, characterized in that said slotted hole (601) is provided as an arc-shaped slot matching with the steel pipe.

3. The radial hole drawing device applied to the steel pipe as claimed in claim 2, wherein the side wall of the rotating shaft (4) is symmetrically provided with a positioning sleeve (7) for positioning the drawing head (5).

4. A radial drawing device applied to a steel pipe according to claim 3, characterized in that the height and the diameter of the drawing head (5) are smaller than the diameter of the steel pipe.

5. The radial hole pulling device applied to the steel pipe as recited in claim 1, wherein the telescopic assembly (3) is an automatic telescopic assembly, and the telescopic assembly (3) is electrically connected with a control cabinet (10).

6. A radial hole drawing device applied to a steel pipe according to any one of claims 1 to 5, characterized in that the lower end of the frame (1) is provided with a plurality of universal casters (8).