CN113953728A - Centering device for ship inner and outer field welding and using method thereof - Google Patents

Abstract

The invention discloses a centering device for welding an inner field and an outer field of a ship and a using method thereof, wherein the centering device comprises a support, a screw rod, a base, first angle iron, second angle iron, an upper end nut and a lower end nut, the support is L-shaped and comprises a first support plate and a second support plate which are vertically connected, the end part of the second support plate is welded on the base, a through hole is formed in the first support plate, the upper end nut is installed on the upper end surface of the first support plate, the lower end nut is installed on the lower end surface of the first support plate, a threaded hole of the upper end nut and a threaded hole of the lower end nut are communicated with the through hole, the screw rod is in threaded connection with the upper end nut and the lower end nut, the first angle iron and the second angle iron are welded to form a cross structure, and at least two supports are arranged on a bottom plate. The invention can be applied to various construction environments of inner fields and outer fields, improves the accuracy and convenience of welding operation, and meets the operation requirement of a single person for single tooling.

Description

Centering device for ship inner and outer field welding and using method thereof

Technical Field

The invention belongs to the technical field of ship construction, and particularly relates to a centering device for ship internal and external field welding and a using method thereof.

Background

In the field of ship manufacturing, the situation of welding two sections of pipes is often met, so that the requirement of field installation is met, but in actual work, due to the fact that an auxiliary tool for fixing the pipes is lacked, a worker holds a welding gun by one hand and adjusts a welded object by the other hand, accurate centering is difficult to achieve through binocular observation, the welded pipes are prone to shifting of joint positions and deviation of joint angles, and subsequent installation and use are affected.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a centering device for welding an inner field and an outer field of a ship. In addition, the invention also provides a use method of the centering device for welding the inner and outer fields of the ship.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a centering device for welding an inner field and an outer field of a ship, which comprises a support, a screw rod, a base, a first angle iron, a second angle iron, an upper end nut and a lower end nut, wherein the support is L-shaped and comprises a first support plate and a second support plate which are vertically connected, the end part of the second support plate is welded on the base, a through hole is formed in the first support plate, the upper end nut is installed on the upper end surface of the first support plate, the lower end nut is installed on the lower end surface of the first support plate, a threaded hole of the upper end nut and a threaded hole of the lower end nut are communicated with the through hole, the screw rod is in threaded connection with the upper end nut and the lower end nut, a rubber sleeve is arranged at one end of the screw rod, which is positioned at the inner side of the support, the first angle iron and the second angle iron are welded to form a cross-shaped structure, the cross-shaped structure is welded on the base, the bottom plate is provided with at least two brackets.

As a preferable technical scheme, one end of the screw rod, which is positioned on the outer side of the bracket, is connected with a handle in a welding mode.

As a preferred technical scheme, the number of the supports is four, and the four supports are symmetrically distributed on two sides of the base in pairs.

Preferably, the area of the cross-shaped structure between the two sets of brackets is cut to form a hollow groove.

Preferably, the cross-shaped structure is connected with the second support plate in a welding mode.

Preferably, the diameter of the through hole is larger than the diameter of the external thread of the screw.

The invention provides a use method of a centering device for welding an inner field and an outer field of a ship, which comprises the following steps:

the method comprises the following steps that firstly, a base is placed on the ground or a supportable object, so that a first support plate is in a horizontal state;

loosening the screw rod to enable the screw rod to move upwards;

step three, respectively placing a first pipeline and a second pipeline to be butted on the cross structure, and closing and fitting the interfaces;

step four, adjusting the height of the screw by two hands, and ensuring the centering of the two pipes through the top support of the screw;

fifthly, screwing the bolt, checking the centering condition of the pipe, and performing spot welding at the visual angle;

after spot welding and fixing, loosening all the screw rods, and rotating the first pipeline and the second pipeline to enable the parts which are not welded to face outwards;

and step seven, repeating the step four, the step five and the step six until all welding seams are welded.

Compared with the prior art, the invention has the following technical effects: the invention can be applied to various construction environments of inner fields and outer fields, improves the accuracy and convenience of welding operation, meets the operation requirement of a single tool, indirectly improves the operation efficiency, and solves the problems of position offset, angle deviation and the like of an interface when two pipes are welded by a single person under the background without an auxiliary tool in the past.

Drawings

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

Figure 1 is a front view of the centering device of the present invention.

Figure 2 is a top view of the centering device of the present invention.

Figure 3 is a side view of the centering device of the present invention.

Wherein the reference numerals are specified as follows: handle 1, screw rod 2, upper end nut 3, support 4, lower extreme nut 5, rubber sleeve 6, first pipeline 7, second pipeline 8, base 9, first angle iron 10, second angle iron 11, pipe butt joint groove.

Detailed Description

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Example 1

The embodiment provides a centering device for welding an internal and external field of a ship, which comprises a handle 1, a screw rod 2, a support 4, an upper end nut 3, a lower end nut 5, a base 9, a first angle iron 10 and a second angle iron 11.

Handle 1 is integrative with the end welding of screw rod 2, and the appearance is the right angle form, and both hands rotate handle 1, realize that screw rod 2 is rotatory, reach the removal of upper and lower position. The screw rod 2 is not in threaded connection with the upper end nut 3 and the lower end nut 5.

Support 4 is formed by two angle bar welding, the appearance is the right angle form, including first extension board and second extension board, first extension board level sets up, it has the through-hole to bore on the first extension board, the diameter in hole is greater than the diameter of 2 external screw threads of screw rod, be less than upper end nut 3, the contrast size of lower extreme nut 5, upper end nut 3 welds in the last plane of first extension board, lower extreme nut 5 welds in the lower plane of first extension board, upper end nut 3, the screw hole and the through-hole intercommunication of lower extreme nut 5, downthehole screw rod 2 that passes, guarantee that screw rod 2 can reciprocate.

The rubber sleeve 6 is sleeved at the end part of the screw rod 2, and plays a role in buffering and protecting when the screw rod 2 props against the first pipeline 7 and the second pipeline 8, so that the thin-walled pipe is prevented from deforming under stress.

The first pipeline 7 and the second pipeline 8 are steel pipes or pipes made of other materials.

The base 9, the first angle iron 10, the second angle iron 11 and the support 4 are welded into a whole, and the purpose of strengthening the bottom of the whole device is achieved. The first angle iron 10 and the second angle iron 11 are welded to form a cross structure, and a section of empty groove needs to be cut at a position close to the pipe end welding position for subsequent welding operation. The cross structure is connected with the second support plate in a welding mode.

The butt joint positions of the first pipeline 7 and the second pipeline 8 are provided with butt joint grooves, and the butt joint grooves are formed by chamfering of a grinder and are used for subsequent welding.

Example 2

The implementation provides a use method of a centering device for welding an internal and external field of a ship, which comprises the following steps:

firstly, a base 9 is placed on the ground or a supportable object, so that a first support plate is in a horizontal state;

step two, loosening the screw rod 2 to enable the screw rod 2 to move upwards;

thirdly, respectively placing the first pipeline 7 and the second pipeline 8 to be butted on the cross structure, closing and jointing the interfaces, wherein a pipe butt joint groove 12 is arranged at the butt joint part of the first pipeline 7 and the second pipeline 8;

step four, adjusting the height of the screw rod 2 by two hands, and ensuring the centering of the two pipes through the top support of the screw rod 2;

fifthly, screwing the bolt, checking the centering condition of the pipe, and performing spot welding at the visual angle;

sixthly, loosening all the screw rods 2 after spot welding and fixing, and rotating the first pipeline 7 and the second pipeline 8 to enable the parts which are not welded to face outwards;

and step seven, repeating the step four, the step five and the step six until all welding seams are welded. All the screws 2 are unscrewed, and the first pipe 7 and the second pipe 8 are taken out.

In the past, two welders are needed to weld two sections of pipes in field construction without the help of auxiliary tools, one welder rights the two pipes with double hands, and the other welder welds the pipes. After the novel tool is used, the expenditure of one welder can be saved, through calculation, in the past year, all ships under construction in the department can complete 5 thousands of welding seams in total, 50 welders are needed, the number of the welding seams completed by each welder per day is about 8 on average, the expenditure of 25 welders can be saved through calculation according to the wages of 30 yuan/hour of one welder, 30 yuan/hour X8 hour X250 days/year is 60000 yuan, namely about 6 yuan can be saved in one year, which is only the expenditure saved in one year in the department, and if the tool is popularized to the whole factory, the 120 yuan can be saved through calculation according to one round in 5 years.

Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.

Claims (7)

1. A centering device for welding an inner field and an outer field of a ship is characterized by comprising a support, a screw rod, a base, first angle iron, second angle iron, an upper end nut and a lower end nut, wherein the support is L-shaped and comprises a first support plate and a second support plate which are vertically connected, the end part of the second support plate is welded on the base, a through hole is formed in the first support plate, the upper end nut is installed on the upper end surface of the first support plate, the lower end nut is installed on the lower end surface of the first support plate, a threaded hole of the upper end nut and a threaded hole of the lower end nut are communicated with the through hole, the screw rod is in threaded connection with the upper end nut and the lower end nut, a rubber sleeve is arranged at one end of the screw rod, which is positioned on the inner side of the support, the first angle iron and the second angle iron are welded to form a cross-shaped structure, and the cross-shaped structure is welded on the base, the bottom plate is provided with at least two brackets.

2. The centering device for welding the inner and outer fields of the ship as claimed in claim 1, wherein a handle is welded to one end of the screw rod located at the outer side of the bracket.

3. The centering device for welding the inner and outer fields of the ship as claimed in claim 1, wherein the number of the brackets is four, and the four brackets are symmetrically distributed on two sides of the base in pairs.

4. The centering device for welding inside and outside fields of ships according to claim 3, wherein the area of the cross-shaped structure between the two sets of brackets is cut to form a hollow groove.

5. The centering device for welding inside and outside fields of ships according to claim 1, wherein the cross-shaped structure is welded to the second support plate.

6. The centering device for welding the inner and outer fields of the ship as claimed in claim 1, wherein the diameter of the through hole is larger than the diameter of the external thread of the screw.

7. A use method of a centering device for welding an internal and external field of a ship is characterized by comprising the following steps:

the method comprises the following steps that firstly, a base is placed on the ground or a supportable object, so that a first support plate is in a horizontal state;

loosening the screw rod to enable the screw rod to move upwards;

step three, respectively placing a first pipeline and a second pipeline to be butted on the cross structure, and closing and fitting the interfaces;

step four, adjusting the height of the screw by two hands, and ensuring the centering of the two pipes through the top support of the screw;

fifthly, screwing the bolt, checking the centering condition of the pipe, and performing spot welding at the visual angle;

after spot welding and fixing, loosening all the screw rods, and rotating the first pipeline and the second pipeline to enable the parts which are not welded to face outwards;

and step seven, repeating the step four, the step five and the step six until all welding seams are welded.

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