CN216939214U

CN216939214U - Tool for controlling welding coaxiality of long pipe

Info

Publication number: CN216939214U
Application number: CN202123318242.XU
Authority: CN
Inventors: 朱政强; 周永强; 糜达昆; 朱云明; 杨群义; 汤翔燕
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-07-12
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a tool for controlling welding coaxiality of a long pipe, which comprises a fixed table and a plurality of groups of fixed pipe frames arranged on the fixed table; the fixed pipe frame is provided with a groove body for a long pipe to pass through, the lower end of the groove body is provided with a base, and the upper end and the rear end of the groove body are respectively provided with an adjusting mechanism which moves up and down and moves back and forth; the positioning rod of the upper end adjusting mechanism and the central axis of the base are on the same vertical line; the base adopts a fixed base or a lifting adjusting base. The utility model adopts a plurality of groups of fixed pipe racks to respectively fix the two long pipes, each long pipe is fixed by three positioning devices, the fixing effect is good, the two long pipes are aligned during welding, and the coaxiality after welding is further effectively ensured.

Description

Tool for controlling welding coaxiality of long pipe

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a tool for controlling welding coaxiality of a long pipe.

Background

In the field of long pipe welding, when two long pipes are butt-welded into a workpiece, the coaxiality of workpiece welding needs to be ensured under most conditions. However, during butt joint, the axial synchronization degree of the two long pipes is poor or the pipe body is displaced during welding, and the coaxiality of the long pipes is difficult to control due to tolerance superposition after welding because the coaxiality of the long pipes is within a certain range. Resulting in long welded tubes. Therefore, a structure is required to be designed to ensure the coaxiality after welding.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects and difficulties in the prior art, the utility model aims to provide a tool for controlling the welding coaxiality of a long pipe.

The utility model is realized by the following technical scheme:

a tool for controlling the welding coaxiality of a long pipe comprises a fixed table and a plurality of groups of fixed pipe frames arranged on the fixed table; the fixed pipe frame is provided with a groove body for the long pipe to pass through, the lower end of the groove body is provided with a base, and the upper end and the rear end of the groove body are respectively provided with an adjusting mechanism which moves up and down and moves back and forth; the positioning rod of the upper end adjusting mechanism and the central axis of the base are on the same vertical line; the base adopts a fixed base or a lifting adjusting base.

Furthermore, the total number of the fixed pipe frames is not less than four groups, the fixed pipe frames for fixing the single long pipe are not less than two groups, and therefore the fixed position of each long pipe is not less than two, and further the fixed effect is guaranteed.

Further, the supporting plate is fixedly installed at the top end of the base, so that the contact range of the long pipe and the base is larger, the supporting plate is arranged in a central symmetry mode by taking the central axis of the base as a center, and the central axis of the base is located on the radial line of the long pipe when the long pipe is arranged. And the tail end of the positioning rod can be provided with a supporting plate in the same way.

Furthermore, the supporting plate is an arc-shaped plate or is composed of two groups of symmetrical inclined plates.

Furthermore, one end of the bottom of the fixed pipe frame is fixedly connected with the fixed station, the other end of the bottom of the fixed pipe frame is connected with the fixed station through a sliding shaft, the sliding shaft penetrates through the bottom end of each group of fixed pipe frames and then is connected with the two sides of the fixed station, and the connecting part of the sliding shaft and the fixed station is fixed through a fastening bolt, so that the sliding shaft is prevented from being separated.

Furthermore, the groove body on the fixed pipe frame adopts a C-shaped groove, and the opening of the groove body faces forwards.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model adopts a plurality of groups of fixed pipe racks to respectively fix the two long pipes, each long pipe is fixed by three positioning devices, the fixing effect is good, the two long pipes are aligned during welding, and the coaxiality after welding is further effectively ensured.

(2) The supporting plates which are symmetrically arranged are arranged at the tail ends of the base and the positioning rod, so that the contact range of the long pipe with the base and the positioning rod is larger, for example, two symmetrical points or two symmetrical surfaces are contacted, and the stability is effectively improved.

(3) The bottom of each group of fixed pipe frames is also connected with the fixed station through a group of sliding shafts, so that the stability of the fixed pipe frames is further improved, and the fixed pipe frames are prevented from deviating during welding.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a side view of the elongated tube placed on the pallet on the base according to the present invention.

Illustration of the drawings: 1-a fixed table, 2-a fixed pipe frame, 201-an adjusting handle, 202-a fixed frame, 203-a fastening handle, 204-a positioning rod, 205-a base, 206-an arc-shaped plate, 207-an inclined plate, 3-a fastening bolt and 4-a sliding shaft.

In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, and integrally connected; mechanical connection and electrical connection can be realized; may be directly connected, indirectly connected through intervening agents, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be specifically understood by those of ordinary skill in the art.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in figure 1, the tool for controlling the welding coaxiality of the long pipe comprises a fixed table 1 and a plurality of groups of fixed pipe frames 2 arranged on the fixed table 1. The fixed station 1 is positioned below the whole tool, each group of fixed pipe frames 2 respectively fix two sections of long pipes, and the butt joint point of the welding point is positioned between the two groups of fixed pipe frames 2.

The pipe fixing frame 2 is provided with a groove body for a long pipe to pass through, the lower end of the groove body is provided with a base 205, the upper end and the rear end of the groove body are respectively provided with an adjusting mechanism which moves up and down and moves back and forth, and the adjusting mechanism comprises a fixing frame 202, a positioning rod 204 which extends and retracts from the fixing frame 202, an adjusting handle 201 and a fastening handle 203 which are arranged on the fixing frame 202. The adjusting handle 201 is used for adjusting the length of the positioning rod 204 extending outwards from the inside of the fixing frame 202; the fastening handle 203 is used for fastening the adjusted positioning rod 204, so that the deviation of the positioning rod in use is avoided. The fixing frame 202, the adjusting handle 201 and the positioning rod 204 constitute a lifting/extending device, which employs transmission modes allowed in the field to perform linear displacement adjustment, such as an electric hydraulic push rod, an electric cylinder, etc., which are conventional structures and will not be described herein again.

In the concrete implementation, the groove body on the fixed pipe frame 2 adopts a C-shaped groove, and the opening of the groove body faces forwards, so that the long pipe can be conveniently observed when being fixed and welded.

The total amount of the fixed pipe support 2 is not less than four groups, and the number of the fixed pipe support 2 for fixing a single long pipe is not less than two groups, so that the fixed position of each long pipe is not less than two, and the fixed effect is ensured.

The locating rod 204 of the upper end adjusting mechanism and the central axis of the base 205 are on the same vertical line, so that a vertical line is formed at the contact point of the locating rod 204 and the long pipe, and dislocation fixation is avoided, so that the fixation effect is improved.

The base 205 can be fixed or adjustable, and when fixed, the two long tubes fixed by the tool are tubes with the same size; when a liftable adjustment type is adopted (such as a lifting column, a telescopic rod capable of self-locking, and the like), the sizes of the two long pipes are not limited, and in specific implementation, the bases 205 for supporting the same long pipe are on the same horizontal plane.

Because the base 205 plays a supporting role to the long pipe, and the long pipe is cylindrical structure, and the contact of the two is the point contact, because of mechanical vibration's reason when the welding, cause the skew of the position small-amplitude of long pipe easily, and then influence the axiality. In order to solve the above problem, as shown in fig. 2, the top end of the base 205 is fixedly installed with a supporting plate, so that the contact range between the long tube and the base 205 is larger (e.g. two-point or surface contact in symmetry), and the supporting plate is symmetrically arranged with the central axis of the base 205 as the center, thereby ensuring that the central axis of the base 205 is located on the radial line of the long tube when the long tube is installed. Similarly, the end of the positioning rod 204 may be provided with a supporting plate. The supporting plate can adopt an arc-shaped plate 206 or can be composed of two groups of symmetrical inclined plates 207.

Decide the fixed linking to each other of bottom one end of pipe support 2 and fixed station 1, the other end passes through sliding shaft 4 and meets with fixed station 1, sliding shaft 4 passes and decides behind the 2 bottom of pipe support of each group and meets with fixed station 1 both sides, sliding shaft 4's effect is guaranteed that each group decides pipe support 2 and form the integral type on same horizontal plane, the skew of deciding pipe support 2 has been caused to organize individually when having avoided the welding, sliding shaft 4 adopts fastening bolt 3 to fix with fixed station 1 department of meeting, and then guarantee that sliding shaft 4 does not deviate from.

The foregoing merely represents preferred embodiments of the utility model, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a frock of control long tube welding axiality which characterized in that: comprises a fixed table (1) and a plurality of groups of fixed pipe frames (2) arranged on the fixed table (1); a groove body for a long pipe to pass through is arranged on the fixed pipe frame (2), a base (205) is arranged at the lower end of the groove body, and adjusting mechanisms which move up and down and back and forth are respectively arranged at the upper end and the rear end of the groove body, wherein each adjusting mechanism comprises a fixed frame (202), a positioning rod (204) which stretches out and draws back from the fixed frame (202), an adjusting handle (201) which is arranged on the fixed frame (202) and a fastening handle (203); the positioning rod (204) of the adjusting mechanism at the upper end and the central axis of the base (205) are on the same vertical line; the base (205) adopts a fixed base or an adjustable base which can be lifted.

2. The tool for controlling the coaxiality of long pipe welding according to claim 1, wherein the tool comprises: the total number of the fixed pipe frames (2) is not less than four groups, and the number of the fixed pipe frames (2) for fixing a single long pipe is not less than two groups.

3. The tool for controlling the coaxiality of long pipe welding according to claim 1, is characterized in that: the top end of the base (205) and the tail end of the positioning rod (204) are fixedly provided with supporting plates, and the supporting plates are symmetrically arranged by taking the central axis of the corresponding base (205) or the corresponding positioning rod (204) as a center.

4. The tool for controlling the coaxiality of long pipe welding according to claim 3, wherein the tool comprises: the supporting plate is an arc-shaped plate (206) or is composed of two groups of symmetrical inclined plates (207).

5. The tool for controlling the coaxiality of long pipe welding according to claim 1, is characterized in that: decide the bottom one end of pipe support (2) with fixed station (1) is fixed continuous, the other end pass through sliding shaft (4) with fixed station (1) meets, sliding shaft (4) pass each group decide behind pipe support (2) the bottom with fixed station (1) both sides meet, sliding shaft (4) with fixed station (1) department of meeting adopts fastening bolt (3) to fix.

6. The tool for controlling the coaxiality of long pipe welding according to claim 1, wherein the tool comprises: the groove body on the fixed pipe frame (2) adopts a C-shaped groove, and the opening of the groove body faces forwards.