CN112025193A - Auxiliary tool supporting device for welding low-temperature container - Google Patents
Auxiliary tool supporting device for welding low-temperature container Download PDFInfo
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- CN112025193A CN112025193A CN202010927020.9A CN202010927020A CN112025193A CN 112025193 A CN112025193 A CN 112025193A CN 202010927020 A CN202010927020 A CN 202010927020A CN 112025193 A CN112025193 A CN 112025193A
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- sliding
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- adjusting rod
- fixedly connected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses an auxiliary tool supporting device for welding a low-temperature container, and relates to the technical field of auxiliary tools for welding the low-temperature container. The invention comprises a supporting platform, a sliding block, an adjusting rod component, a supporting adjusting frame and an annular rail with ears; the sliding block is in sliding fit with the supporting platform; the adjusting rod component is fixedly arranged on the peripheral side surface of the adjusting rod component; the support adjusting frame is meshed with the ear ring rail in a transmission fit manner; the sliding rail is in sliding fit with the sliding channel; the top of the sliding block is symmetrically and fixedly provided with a rotating motor; the output end of the rotating motor is fixedly connected with a rotating gear; the adjustment rod assembly includes a hydraulic cylinder. The welding of the cylinders with different lengths and sizes on different heights is realized through the sliding of the two sliding blocks and the adjustment between the adjusting rod components; support the barrel inner wall with seamless fit sleeve through supporting the alignment jig, fix it through the ear chain of annular area, prevent that the barrel is heated or receives external force to lead to warping among the welding process.
Description
Technical Field
The invention belongs to the technical field of auxiliary tools for welding low-temperature containers, and particularly relates to an auxiliary tool supporting device for welding low-temperature containers.
Background
The large-scale low-temperature liquid storage tank barrel container is formed by rolling and welding steel plates, and when the barrel sections are welded with the barrel sections in an assembling mode, in order to prevent the barrel sections from deforming, auxiliary supporting tools need to be erected in the barrel sections. The existing auxiliary supporting tool generally adopts a'm' -shaped fixed supporting frame formed by welding steel plates or steel pipes, the end parts of the fixed supporting frame are welded on the inner wall of a barrel part, two or three fixed supporting frames are usually needed in one barrel section, the barrel section can be prevented from deforming during barrel welding, and the fixed supporting frame is taken down after the barrel is welded. By adopting the fixed support frame, when the size of a barrel part changes, the production requirement can be met only by arranging the fixed support frames with various specifications, and after the fixed support frames are used for a plurality of times, the end parts of the fixed support frames are repeatedly welded and cut, the size of the fixed support frames is shortened, and a steel plate needs to be welded again for use, so that the fixed support frames are poor in universality, long time is needed for installing, adjusting and positioning the fixed support frames during welding, the welding efficiency is influenced, meanwhile, the welding efficiency is low, the labor intensity of workers is increased, time and labor are wasted particularly during disassembly, and the force on the inner wall of the barrel is very easy to; and cannot be adjusted according to the actual length and height of the cylinder.
Disclosure of Invention
The invention aims to provide an auxiliary tool supporting device for welding a low-temperature container, which realizes the welding of cylinders with different lengths and sizes on different heights by the sliding of a sliding block and the adjustment of an adjusting rod assembly; support the barrel inner wall with seamless fit sleeve through supporting the alignment jig to it is fixed through the endless belt ear chain, prevent that the barrel is heated or receive external force to lead to warping among the welding process, solved current problem.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an auxiliary tool supporting device for welding a low-temperature container, which comprises a supporting platform, a sliding block, an adjusting rod assembly, a supporting adjusting frame and an annular rail with lugs, wherein the sliding block is arranged on the supporting platform; the sliding block is in sliding fit with the supporting platform; the adjusting rod assembly is fixedly arranged on the upper surface of the sliding block; the adjusting rod assembly is fixedly arranged on the peripheral side surface of the adjusting rod assembly; the support adjusting frame is meshed with the ear ring rail in a transmission fit manner; the upper surface of the supporting platform is provided with a mounting channel; sliding channels are symmetrically formed in two sides of the inner wall of the mounting channel; sliding rails are symmetrically arranged on two side surfaces of the sliding block; the sliding rail is in sliding fit with the sliding channel; the top of the sliding block is symmetrically and fixedly provided with a rotating motor; the output end of the rotating motor is fixedly connected with a rotating gear; the adjusting rod assembly comprises a hydraulic cylinder; one end of the hydraulic cylinder is fixedly connected with a telescopic adjusting rod; the support adjusting frame comprises a connecting sleeve; the periphery of the connecting sleeve is circumferentially distributed with a plurality of telescopic sleeves in an array manner.
Furthermore, limiting plates are symmetrically and fixedly connected to the top of the supporting platform, close to the two side faces; a gear rack is fixedly connected between the two limiting plates; the gear rack is in meshing transmission fit with the rotating gear.
Furthermore, the side surface of the periphery of the telescopic adjusting rod is provided with an adjusting valve.
Furthermore, one end of one telescopic adjusting rod is provided with an inserting column; one end of the other telescopic adjusting rod is provided with an inserting channel; the insertion column is in insertion fit with the insertion channel.
Furthermore, the inner bottom surface of the telescopic sleeve is fixedly connected with a plurality of connecting springs; the bottom end of the connecting spring is fixedly connected with a telescopic plate; the expansion plate is in sliding fit with the expansion sleeve.
Furthermore, one end of the expansion plate is fixedly connected with a seamless fit sleeve; the side face of the expansion plate is close to the seamless fit sleeve and is fixedly connected with a fixing column.
Furthermore, a plurality of ear plates are fixedly connected to the circumferential side surface of the annular track with the ears in a circumferential array distribution; one end of the ear plate is fixedly connected with a fixed channel.
Furthermore, an annular chain assembly is fixedly connected between the two ends of the ear-carrying annular rail.
The invention has the following beneficial effects:
1. the welding operation of the cylinders with different lengths and sizes on different heights is realized through the sliding of the two sliding blocks and the size adjustment between the two adjusting rod assemblies.
2. The seamless fit sleeve is abutted against the inner wall of the cylinder body through the support adjusting frame and is fixed through the annular lug chain, so that the cylinder body is prevented from being deformed due to heating or external force in the welding process.
3. The device has the advantages of simple structure, convenient operation and high practicability, effectively improves the welding efficiency between the low-temperature container barrels, and reduces the labor intensity of workers.
Of course, it is not necessary for any product in which the invention is practiced 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 the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an auxiliary tool supporting device for welding a cryogenic container according to the present invention;
FIG. 2 is a structural diagram of an assembly effect of the auxiliary tool supporting device for welding a cryogenic container according to the present invention;
FIG. 3 is a schematic view of the slider and lever assembly of the present invention;
FIG. 4 is a schematic structural view of the support adjustment bar of the present invention;
FIG. 5 is a schematic structural view of the eared annular rail of the present invention;
FIG. 6 is an enlarged schematic view of the invention at A;
fig. 7 is an enlarged schematic view of the present invention at B.
In the drawings, the components represented by the respective reference numerals are listed below:
1-supporting platform, 2-sliding block, 3-regulating rod component, 4-supporting regulating frame, 5-eared annular rail, 6-rotating motor, 7-rotating gear, 8-gear rack, 9-splicing groove channel, 10-connecting spring, 11-expansion plate, 12-seamless splicing sleeve, 13-fixed column, 14-annular chain component, 15-splicing column, 101-mounting groove channel, 102-sliding groove channel, 103-limiting plate, 201-sliding rail, 301-hydraulic cylinder, 302-telescopic regulating rod, 303-regulating valve, 401-connecting sleeve, 402-telescopic sleeve, 501-earflap, 502-fixing groove channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "bottom," "top," "side," "inner wall," "peripheral side," and the like are used in an orientation or positional relationship merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.
Referring to fig. 1-7, the invention relates to an auxiliary tool supporting device for welding a low-temperature container, which comprises a supporting platform 1, a sliding block 2, an adjusting rod assembly 3, a supporting adjusting frame 4 and an annular rail 5 with lugs; the sliding block 2 is in sliding fit with the supporting platform 1; the adjusting rod component 3 is fixedly arranged on the upper surface of the sliding block 2; the adjusting rod assembly 3 is fixedly arranged on the peripheral side surface of the adjusting rod assembly 3; the supporting and adjusting frame 4 is engaged and matched with the ear ring-shaped rail 5 in a transmission way; the upper surface of the supporting platform 1 is provided with a mounting channel 101; sliding channels 102 are symmetrically formed on two sides of the inner wall of the installation channel 101; two side surfaces of the sliding block 2 are symmetrically provided with sliding rails 201; the sliding rail 201 is in sliding fit with the sliding channel 102; the top of the sliding block 2 is symmetrically and fixedly provided with a rotating motor 6; the output end of the rotating motor 6 is fixedly connected with a rotating gear 7; the adjusting rod assembly 3 comprises a hydraulic cylinder 301; one end of the hydraulic cylinder 301 is fixedly connected with a telescopic adjusting rod 302; the support adjustment bracket 4 includes a connection sleeve 401; a plurality of telescopic sleeves 402 are distributed on the circumferential side surface of the connecting sleeve 401 in a circumferential array; the distance between the two pipelines is adjusted through the sliding of the two sliding blocks 2 in the supporting platform 1; the length of the pipeline is adjusted by adjusting the support adjusting frame 4 and the pipeline is supported; the supporting and adjusting rod 4 is fixed under the appointed inner diameter through the earring-shaped rail 5; by adjusting the two adjusting rod assemblies 3, the distance between the two pipelines is adjusted.
Referring to fig. 1 and 2, the top of the supporting platform 1 is symmetrically and fixedly connected with limiting plates 103 near two side surfaces; a gear rack 8 is fixedly connected between the two limit plates 103; the gear rack 8 is meshed with the rotating gear 7 for transmission; the two pipelines move along with the two sliding blocks 2 through the meshing transmission fit of the gear rack 8 and the rotating gear 7.
Referring to fig. 1 and 3, an adjusting valve 303 is disposed on the circumferential side of the telescopic adjusting rod 302; the telescopic adjusting rod 303 can be adjusted up and down by adjusting the adjusting valve 303.
Referring to fig. 7, an insertion column 15 is disposed at one end of a telescopic adjusting rod 302; one end of the other telescopic adjusting rod 302 is provided with an inserting channel 9; the inserting column 15 is inserted and matched with the inserting channel 9; the two telescopic adjusting rods 302 are fixed through the inserting and matching of the inserting and connecting columns 15 and the inserting and connecting channels 9.
Referring to fig. 6, the inner bottom surface of the telescopic sleeve 402 is fixedly connected with a plurality of connecting springs 10; the bottom end of the connecting spring 10 is fixedly connected with a telescopic plate 11; the expansion plate 11 is in sliding fit with the expansion sleeve 402; through the elastic action of the spring 10, the telescopic plate 11 is slidably fitted with the telescopic sleeve 402, so that the telescopic plate 11 can be adjusted inside the telescopic sleeve 402.
Referring to fig. 4, one end of the expansion plate 11 is fixedly connected with a seamless fitting sleeve 12; the side surface of the expansion plate 11 close to the seamless fit sleeve 12 is fixedly connected with a fixing column 13; the seamless engagement sleeve 12 is in seamless abutment with the inner wall of the pipe by the elastic action of the coupling spring 10.
Referring to fig. 5, a plurality of ear plates 501 are fixedly connected to the circumferential side surface of the eared annular rail 5 in a circumferential array; one end of the ear plate 501 is fixedly connected with a fixed channel 502; the earring-shaped rail 5 fixes the expansion plate 11 under the specified size through the insertion fit of the fixing groove 502 and the fixing column 13.
Referring to fig. 5, an annular chain assembly 14 is fixedly connected between two ends of the ear-carrying annular rail 5; will take ear annular rail 5 both ends to fix through annular chain subassembly 14, can be fixed it through changing not take ear annular rail 5 of unidimensional size and through annular chain subassembly 14, realize adjusting the flexible length of expansion plate 11, realize different pipeline internal diameter size's fixed.
The specific working principle of the invention is as follows:
by measuring the size of the inner diameter of a pipeline to be welded, under the elastic action of the spring 10 and through the sliding fit of the expansion plate 11 and the expansion sleeve 402, the expansion plate 11 can be adjusted inside the expansion sleeve 402, and the seamless fit sleeve 12 is abutted to the inner wall of the pipeline; the telescopic length of the telescopic plate 11 is adjusted by replacing the eared annular rails 5 with different sizes and fixing the eared annular rails through the annular chain component 14, so that the inner diameter sizes of different pipelines are fixed; the rotating gear 7 is driven to rotate by the rotation of the rotating motor 6, the two pipelines move along with the two sliding blocks 2 through the meshing transmission fit of the gear rack 8 and the rotating gear 7, meanwhile, the two adjusting telescopic rods 302 are made to do telescopic motion through adjusting the two adjusting valves 303, and the two telescopic adjusting rods 302 are fixed through the inserting fit of the inserting column 15 and the inserting channel 9; the operations are used for butting and fixing the two pipelines to be welded; the height of the pipeline is adjusted in the process of up-and-down movement of the hydraulic cylinders 301 by adjusting the two hydraulic cylinders 301 simultaneously; the welding operation is performed as follows.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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 invention disclosed above are intended to be illustrative only. 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 the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. An auxiliary tool supporting device for welding a low-temperature container comprises a supporting platform (1), a sliding block (2), an adjusting rod assembly (3), a supporting adjusting frame (4) and an annular rail (5) with lugs; the sliding block (2) is in sliding fit with the supporting platform (1); the adjusting rod assembly (3) is fixedly arranged on the upper surface of the sliding block (2); the adjusting rod component (3) is fixedly arranged on the peripheral side surface of the adjusting rod component (3); the supporting and adjusting frame (4) is meshed with the annular track (5) with the ear in a transmission fit manner;
the method is characterized in that:
the upper surface of the supporting platform (1) is provided with a mounting channel (101); sliding channels (102) are symmetrically formed on two sides of the inner wall of the mounting channel (101);
sliding rails (201) are symmetrically arranged on two side surfaces of the sliding block (2); the sliding rail (201) is in sliding fit with the sliding channel (102); the top of the sliding block (2) is symmetrically and fixedly provided with a rotating motor (6); the output end of the rotating motor (6) is fixedly connected with a rotating gear (7);
the adjusting rod assembly (3) comprises a hydraulic cylinder (301); one end of the hydraulic cylinder (301) is fixedly connected with a telescopic adjusting rod (302);
the support adjusting frame (4) comprises a connecting sleeve (401); the side surface of the periphery of the connecting sleeve (401) is provided with a plurality of telescopic sleeves (402) in a circumferential array distribution.
2. The auxiliary tool supporting device for welding the low-temperature container is characterized in that limiting plates (103) are symmetrically and fixedly connected to the top of the supporting platform (1) close to two side faces; a gear rack (8) is fixedly connected between the two limiting plates (103); the gear rack (8) is in meshing transmission fit with the rotating gear (7).
3. The auxiliary tool supporting device for welding the cryogenic container as claimed in claim 1, wherein the adjusting valve (303) is arranged on the peripheral side surface of the telescopic adjusting rod (302).
4. The auxiliary tool supporting device for welding the cryogenic container as claimed in claim 1, wherein one end of the telescopic adjusting rod (302) is provided with an inserting column (15); one end of the other telescopic adjusting rod (302) is provided with an inserting channel (9); the insertion column (15) is in insertion fit with the insertion channel (9).
5. The auxiliary tool supporting device for welding the cryogenic container according to claim 1, wherein a plurality of connecting springs (10) are fixedly connected to the inner bottom surface of the telescopic sleeve (402); the bottom end of the connecting spring (10) is fixedly connected with a telescopic plate (11); the telescopic plate (11) is in sliding fit with the telescopic sleeve (402).
6. The auxiliary tool supporting device for welding the low-temperature container according to claim 4, wherein one end of the expansion plate (11) is fixedly connected with a seamless fit sleeve (12); the side surface of the expansion plate (11) is close to the seamless joint sleeve (12) and is fixedly connected with a fixing column (13).
7. The auxiliary tool supporting device for welding the cryogenic container according to claim 1, wherein a plurality of ear plates (501) are fixedly connected to the circumferential side surface of the eared annular rail (5) in a circumferential array manner; one end of the ear plate (501) is fixedly connected with a fixed channel (502).
8. The auxiliary tool supporting device for welding the cryogenic container according to claim 1, wherein an annular chain assembly (14) is fixedly connected between two ends of the eared annular rail (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927020.9A CN112025193A (en) | 2020-09-07 | 2020-09-07 | Auxiliary tool supporting device for welding low-temperature container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010927020.9A CN112025193A (en) | 2020-09-07 | 2020-09-07 | Auxiliary tool supporting device for welding low-temperature container |
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| CN112025193A true CN112025193A (en) | 2020-12-04 |
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| CN202010927020.9A Pending CN112025193A (en) | 2020-09-07 | 2020-09-07 | Auxiliary tool supporting device for welding low-temperature container |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551873A (en) * | 2020-12-08 | 2021-03-26 | 信和光能(安徽)有限公司 | High borosilicate glass tube butt joint device and butt joint process thereof |
| CN113547279A (en) * | 2021-08-02 | 2021-10-26 | 九江海天设备制造有限公司 | Thick plate titanium alloy welding adjustable device |
| CN116060855A (en) * | 2022-12-23 | 2023-05-05 | 天津九鹏汽车装备技术有限公司 | Positioning mechanism for positioning workpiece opening |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110666385A (en) * | 2019-11-01 | 2020-01-10 | 温金建 | Automatic steel bottle girth welding device |
| CN111168318A (en) * | 2020-01-19 | 2020-05-19 | 武汉一冶钢结构有限责任公司 | Anti-deformation method and tool for welding and heat treatment of stainless steel cylinder |
| US20200180930A1 (en) * | 2019-10-11 | 2020-06-11 | Jili Ye | Grinding apparatus for curved neck of ceramic bottle |
| CN210818248U (en) * | 2019-11-15 | 2020-06-23 | 合肥科安设备安装有限公司 | Adjustable welding stent for circular pipe fitting |
| CN111347215A (en) * | 2020-04-23 | 2020-06-30 | 林进卓 | Automatic welding device and welding method for large pipeline on site |
-
2020
- 2020-09-07 CN CN202010927020.9A patent/CN112025193A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200180930A1 (en) * | 2019-10-11 | 2020-06-11 | Jili Ye | Grinding apparatus for curved neck of ceramic bottle |
| CN110666385A (en) * | 2019-11-01 | 2020-01-10 | 温金建 | Automatic steel bottle girth welding device |
| CN210818248U (en) * | 2019-11-15 | 2020-06-23 | 合肥科安设备安装有限公司 | Adjustable welding stent for circular pipe fitting |
| CN111168318A (en) * | 2020-01-19 | 2020-05-19 | 武汉一冶钢结构有限责任公司 | Anti-deformation method and tool for welding and heat treatment of stainless steel cylinder |
| CN111347215A (en) * | 2020-04-23 | 2020-06-30 | 林进卓 | Automatic welding device and welding method for large pipeline on site |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551873A (en) * | 2020-12-08 | 2021-03-26 | 信和光能(安徽)有限公司 | High borosilicate glass tube butt joint device and butt joint process thereof |
| CN113547279A (en) * | 2021-08-02 | 2021-10-26 | 九江海天设备制造有限公司 | Thick plate titanium alloy welding adjustable device |
| CN113547279B (en) * | 2021-08-02 | 2022-08-23 | 九江海天设备制造有限公司 | Thick plate titanium alloy welding adjustable device |
| CN116060855A (en) * | 2022-12-23 | 2023-05-05 | 天津九鹏汽车装备技术有限公司 | Positioning mechanism for positioning workpiece opening |
| CN116060855B (en) * | 2022-12-23 | 2024-02-02 | 天津九鹏汽车装备技术有限公司 | Positioning mechanism for positioning workpiece opening |
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Application publication date: 20201204 |
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