Large-span open-web steel structure welding positioning device and construction method thereof

Abstract

The invention discloses a large-span open-web steel structure welding positioning device and a construction method thereof, and relates to the technical field of steel structure welding, the large-span open-web steel structure welding positioning device comprises a stand column, a lifting adjusting mechanism is slidably mounted on the outer wall of the stand column, and a positioning mechanism is fixedly connected to one side of the lifting adjusting mechanism; the positioning mechanism comprises a clamping assembly, the clamping assembly comprises a fixed clamping frame, a hot air plate is fixedly connected to the middle of the fixed clamping frame, a hot air groove is formed in one side of the hot air plate, and a hot air pipe is fixedly connected to the bottom of the hot air plate; by arranging the positioning mechanism, the to-be-welded position of the steel structure is supported and limited, the position of the steel structure is kept fixed, and the requirement for stability of welding operation is met; the clamping air cylinder drives the movable supporting frame to move to clamp the steel structure, the pressing air cylinder is matched to drive the pressing pad to press downwards, the steel structure is limited, and the clamping and positioning capacity of the steel structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, in particular to a large-span hollow steel structure welding positioning device and a construction method thereof. Background Art

[0002] The large-span stainless steel continuous welded metal roof construction method is a commonly used technology in modern construction.

[0003] During the construction process, the foundation must be laid first. Then, the keel of the metal roof is welded. Subsequently, the metal roof panels are welded. Finally, the surface treatment and anti-corrosion protection of the metal roof are carried out. When welding, the existing large-span steel structure relies on manual movement of the steel structure end for positioning. This positioning method is insufficient for the positioning stability of the steel structure. In addition, due to the complex and changeable position height and tilt posture of the welding position of the steel structure, the operation of manual positioning is relatively complicated, which affects the overall efficiency of the welding process. Therefore, it is necessary to propose improvements. Summary of the invention

[0004] The purpose of the present invention is to provide a large-span hollow steel structure welding positioning device and a construction method thereof, so as to solve the problem of insufficient positioning stability of the steel structure in the prior art when welding the steel structure.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A large-span hollow steel structure welding positioning device comprises a column, the outer wall of which is slidably mounted with a lifting and adjusting mechanism, one side of which is fixedly connected with a positioning mechanism for limiting support of the steel structure; the positioning mechanism comprises a clamping assembly and an adjusting assembly for adjusting the position and posture of the clamping assembly, the clamping assembly comprises a fixed clamping frame, both sides of the bottom of the fixed clamping frame are fixedly mounted with clamping cylinders, the output end of the clamping cylinder is fixedly connected with a movable clamping frame, the middle part of the fixed clamping frame and the middle part of the movable clamping frame are fixedly connected with a hot air plate, one side of the hot air plate is provided with a hot air groove, the bottom of the hot air plate is fixedly connected with a hot air pipe, and one end of the hot air pipe is fixedly connected to the output end of an external hot air device.

[0007] As a further solution of the present invention: a clamping cylinder is fixedly installed on the top of the fixed clamping frame and the top of the movable clamping frame, a clamping pad is fixedly connected to the output end of the clamping cylinder, and an anti-slip pad is fixedly connected to the bottom of the clamping pad.

[0008] As a further solution of the present invention: the adjustment component includes a connecting sleeve, one end of the connecting sleeve is fixedly installed with a shift guide rail, the inner wall of the shift guide rail is slidably installed with a docking block, one side of the docking block is fixedly installed with an adjustment motor, and the output end of the adjustment motor is fixedly connected to one side of the fixed clamping frame; the outer wall cover of the adjustment motor is provided with a docking plate, and a plurality of connecting rods are fixedly connected between the outer wall of the docking plate and the fixed clamping frame.

[0009] As a further solution of the present invention: the lifting and lowering adjustment mechanism includes a lifting frame, and driving components are arranged on both sides of the inner wall of the lifting frame, and the driving component includes a driving motor, and the output end of the driving motor is fixedly connected with a driving gear, and one side of the driving gear is meshingly connected with a transmission gear, and the middle part of the transmission gear is fixedly connected with a transmission rod, and the middle part of the transmission rod is fixedly connected with a lifting guide wheel, one end of the transmission rod is rotatably connected with a mounting frame, and the bottom of the mounting frame is fixedly connected to the inner wall of the lifting frame, and guide grooves are opened on both sides of the column, and the lifting guide wheel is rollingly connected in the guide groove.

[0010] As a further solution of the present invention: the bottom of the column is fixedly connected to a base, and a plurality of leveling units are arranged on the bottom edge of the base. The leveling units include mounting grooves opened on the base, and a plurality of inner walls of the mounting grooves are fixedly installed with lifting cylinders, and the output end of the lifting cylinder is fixedly connected to a push plate.

[0011] As a further solution of the present invention: one end of the fixed clamping frame is fixedly connected to a snap-in frame, the inner wall of the snap-in frame is snap-connected to an air supply pipe, one end of the air supply pipe is fixedly connected to an air supply nozzle, and a strip groove is opened on one side of the air supply nozzle.

[0012] As a further solution of the present invention: the column includes a plurality of vertically spliced ​​sections, and the plurality of spliced ​​sections are sequentially connected to form the column.

[0013] A large-span hollow steel structure welding positioning construction method comprises the following steps:

[0014] Step 1: Place the column at the welding construction position;

[0015] Step 2: Slide the lifting frame and adjust the movable support frame so that the end of the steel structure to be welded is located in the clamping assembly;

[0016] Step 3: Lock the steel structure by controlling the movable support frame to move close to the fixed support frame and cooperating with the clamping cylinder to drive the clamping plate to move downward;

[0017] Step 4: The clamping assembly is driven to translate by the shift guide rail, the clamping assembly is driven to rotate by the adjusting motor, and the clamping assembly is driven to move up and down by the lifting and lowering adjustment mechanism, so that the welding position of the steel structure is aligned, and the positioning operation of the steel structure is realized;

[0018] Step 5: Send out hot air through the hot air slot to preheat the welding position;

[0019] Step 6: After preheating, weld the steel structure using handheld welding equipment.

[0020] As a further solution of the present invention: before step five, the air supply pipe is operated by hand to supply air to the welding position for cleaning, so as to remove dust from the welding position.

[0021] Compared with the prior art, the invention has the following beneficial effects: the invention supports and limits the position of the steel structure to be welded by setting a positioning mechanism, keeps its position fixed, so as to meet the stability requirements of the welding operation; drives the movable support frame to move by the clamping cylinder to clamp the steel structure, cooperates with the clamping cylinder to drive the clamping pad to press down, limits the steel structure, and improves the clamping and positioning capability of the steel structure;

[0022] The present invention drives the clamping assembly to translate or rotate as a whole by setting structures such as a shift guide rail and an adjustment motor, and cooperates with the lifting and lowering adjustment assembly to drive the positioning mechanism to move up and down as a whole, thereby meeting the positioning requirements of steel structures with different position heights and tilt postures;

[0023] The positioning mechanism of the present invention arranges a hot air plate in the clamping assembly, and uses the hot air pipe and the hot air slot thereon to send hot air to the position of the steel structure to be welded, so as to preheat the steel structure, facilitate uniform heating of the welding point, and avoid welding deformation and cracks;

[0024] The present invention provides columns that can be spliced ​​in sections, thereby facilitating adjustment of the length of the columns according to actual construction scene requirements, and cooperates with a leveling unit provided on the bottom base of the columns, and drives the push plates to be ejected through the jacking cylinders to adjust the postures of the base and the columns, thereby achieving stable placement on grounds of different flatnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a schematic diagram of the position structure of the hot air plate of the present invention;

[0027] Figure 3 is a cross-sectional view of the adjustment assembly of the present invention;

[0028] Figure 4 It is a top cross-sectional view of the lifting and lowering adjustment mechanism of the present invention;

[0029] Figure 5 It is a cross-sectional view of the leveling unit of the present invention.

[0030] In the figure: 1. base; 2. column; 3. guide groove; 4. lifting adjustment mechanism; 401. lifting frame; 402. lifting guide wheel; 403. transmission gear; 404. driving gear; 405. driving motor; 5. adjusting assembly; 501. connecting sleeve; 502. shifting guide rail; 503. docking block; 504. adjusting motor; 505. docking plate; 506. connecting rod; 6. clamping assembly; 601. fixed clamping frame; 602. movable clamping frame; 603. clamping cylinder; 604. pressing pad; 605. hot air plate; 606. hot air groove; 607. hot air pipe; 7. air supply pipe; 8. lifting cylinder; 9. push piece. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 In an embodiment of the present invention, a large-span hollow steel structure welding positioning device includes a column 2, a lifting and adjusting mechanism 4 is slidably installed on the outer wall of the column 2, and a positioning mechanism for limiting and supporting the steel structure is fixedly connected to one side of the lifting and adjusting mechanism 4; the present application supports and limits the position of the steel structure to be welded by setting a positioning mechanism, and keeps its position fixed to meet the stability requirements of the welding operation; the positioning mechanism includes a clamping assembly 6 and an adjusting assembly 5 for adjusting the position and posture of the clamping assembly 6; the clamping assembly 6 includes a fixed clamping frame 601, and clamping cylinders 603 are fixedly installed on both sides of the bottom of the fixed clamping frame 601, and a movable clamping frame 602 is fixedly connected to the output end of the clamping cylinder 603, and the movable support frame is driven to move by the clamping cylinder 603 to clamp the steel structure;

[0033] In order to improve the clamping and limiting ability of the steel structure, a clamping cylinder is fixedly installed on the top of the fixed clamping frame 601 and the top of the movable clamping frame 602, and a clamping pad 604 is fixedly connected to the output end of the clamping cylinder, and an anti-slip gasket is fixedly connected to the bottom of the clamping pad 604; the clamping cylinder is used to drive the clamping pad 604 to press down to limit the steel structure.

[0034] See also Figure 1 and Figure 2A hot air plate 605 is fixedly connected to the middle of the fixed clamping frame 601 and the middle of the movable clamping frame 602, a hot air groove 606 is opened on one side of the hot air plate 605, a hot air pipe 607 is fixedly connected to the bottom of the hot air plate 605, and one end of the hot air pipe 607 is fixedly connected to the output end of the external hot air device; by arranging the hot air plate 605 in the clamping assembly 6, the hot air pipe 607 and the hot air groove 606 thereon are used to send hot air to the welding position of the steel structure, so as to preheat the steel structure, facilitate uniform heating of the welding point, and avoid welding deformation and cracks.

[0035] During the welding operation, the steel structure has a variety of different heights and tilt postures. In order to achieve stable clamping and limiting of steel structures with different postures, please refer to Figure 3 The adjustment component 5 includes a connecting sleeve 501, one end of which is fixedly installed with a shift guide rail 502, the inner wall of the shift guide rail 502 is slidably installed with a docking block 503, one side of the docking block 503 is fixedly installed with an adjustment motor 504, and the output end of the adjustment motor 504 is fixedly connected to one side of the fixed clamping frame 601; by setting structures such as the shift guide rail 502 and the adjustment motor 504, the clamping component 6 is driven to translate or rotate as a whole, thereby meeting the positioning requirements of steel structures in different states.

[0036] In order to improve the connection stability between the clamping assembly 6 and the adjusting motor 504, the outer wall cover of the adjusting motor 504 is provided with a docking plate 505, the bottom of the docking plate 505 is in contact with the end of the connecting sleeve 501, and a plurality of connecting rods 506 are fixedly connected between the outer wall of the docking plate 505 and the fixed clamping frame 601. The force is dispersed by the connecting rods 506 and the docking plate 505, thereby improving the bearing capacity of the clamping assembly 6 on the steel structure.

[0037] To adjust the height of the clamping assembly 6, refer to Figure 4 The lifting and lowering adjustment mechanism 4 includes a lifting frame 401. Both sides of the inner wall of the lifting frame 401 are provided with driving components. The driving components include a driving motor 405. The output end of the driving motor 405 is fixedly connected with a driving gear 404. One side of the driving gear 404 is meshed with a transmission gear 403. The middle part of the transmission gear 403 is fixedly connected with a transmission rod. The middle part of the transmission rod is fixedly connected with a lifting guide wheel 402. One end of the transmission rod is rotatably connected with a mounting frame. The bottom of the mounting frame is fixedly connected to the inner wall of the lifting frame 401. Guide grooves 3 are provided on both sides of the column 2. The lifting guide wheel 402 is rollingly connected in the guide groove 3 and is in close contact with the guide groove 3. The rotation of the driving motor 405 drives the driving gear 404 and the transmission gear 403 to rotate, thereby driving the lifting guide wheel 402 to rotate, thereby realizing the overall lifting and lowering movement operation of the lifting frame 401.

[0038] In order to ensure the overall stability of the column 2, the bottom of the column 2 is fixedly connected to the base 1, and the bottom edge of the base 1 is provided with a number of leveling units, see Figure 5 The leveling unit includes a mounting groove provided on the base 1, and a plurality of inner walls of the mounting grooves are fixedly mounted with a lifting cylinder 8, and an output end of the lifting cylinder 8 is fixedly connected with a push piece 9, and the push piece 9 is pushed out by the lifting cylinder 8. By controlling the ejection stroke of different lifting cylinders 8, the posture of the base 1 and the column 2 can be adjusted, so as to achieve stable placement on the ground with different flatness.

[0039] See also Figure 1 One end of the fixed clamping frame 601 is fixedly connected to a card-joining frame, and the inner wall of the card-joining frame is card-joined with an air supply pipe 7, and one end of the air supply pipe 7 is fixedly connected to an air supply nozzle. A strip groove is provided on one side of the air supply nozzle. The air supply pipe is a flexible pipe, which is convenient for bending and pulling operations. The air supply pipe is provided to send air flow to the position of the steel structure to be welded, and the steel structure is blown and cleaned, so as to avoid the influence of dust and impurities remaining on the steel structure on the welding operation.

[0040] In order to adjust the height of the column 2, the column 2 includes a plurality of vertically spliced ​​sections, the top edge of each splicing section is provided with a splicing hole, the bottom edge of each splicing section is fixedly connected with a splicing rod, each splicing hole is snap-connected with each splicing rod, and the column 2 is formed by snapping together a plurality of splicing sections in sequence.

[0041] A large-span hollow steel structure welding positioning device, the specific construction and use method of which is as follows:

[0042] First, place the column 2 at the welding construction position, and use a universal level or other level detection device to detect the horizontal state of the column 2. When the column 2 is not horizontal, each lifting cylinder 8 is started to push the push piece 9 out, and the column 2 is leveled by controlling the ejection distance of the lifting cylinder 8;

[0043] The sliding displacement lifting frame 401 adjusts the movable support frame through the clamping cylinder so that the end of the steel structure to be welded is located in the clamping assembly 6; the movable support frame is pushed by the clamping cylinder to move close to the fixed support frame, and the clamping plate is driven downward by the clamping cylinder to lock the steel structure; the clamping assembly 6 is driven to translate by the shifting guide rail 502, and the clamping assembly 6 is driven to rotate by the adjusting motor 504, and the clamping assembly 6 is driven to rise and fall by the lifting and lowering adjustment mechanism 4, so that the welding position of the steel structure is aligned;

[0044] Separate the air supply pipe from the clamping frame, and operate the air supply pipe by hand to supply air to the welding position to remove dust from the welding position. Output hot air through the external thermal extraction equipment, and send it to each hot air plate 605 through the hot air pipe 607, and then send hot air out from the hot air slot 606 to preheat the welding position. The preheating temperature is 60 degrees. After the preheating is completed, gradually reduce the hot air temperature to achieve slow cooling. After it is reduced to room temperature, the steel structure is welded by handheld welding equipment.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A large-span hollow steel structure welding positioning device, characterized in that: The invention comprises a column (2), the outer wall of the column (2) is slidably mounted with a lifting and adjusting mechanism (4), one side of the lifting and adjusting mechanism (4) is fixedly connected with a positioning mechanism for limiting support of the steel structure; the positioning mechanism comprises a clamping assembly (6) and an adjusting assembly (5) for adjusting the position and posture of the clamping assembly (6), the clamping assembly (6) comprises a fixed clamping frame (601), both sides of the bottom of the fixed clamping frame (601) are fixedly mounted with a clamping cylinder (603), the output end of the clamping cylinder (603) is fixedly connected with a movable clamping frame (602), the middle part of the fixed clamping frame (601) and the middle part of the movable clamping frame (602) are fixedly connected with a hot air plate (605), one side of the hot air plate (605) is provided with a hot air groove (606), and the bottom of the hot air plate (605) is fixedly connected with a hot air pipe (607).

2. A large-span hollow steel structure welding positioning device according to claim 1, characterized in that: A clamping cylinder is fixedly mounted on the top of the fixed clamping frame (601) and the top of the movable clamping frame (602), a clamping pad (604) is fixedly connected to the output end of the clamping cylinder, and an anti-slip pad is fixedly connected to the bottom of the clamping pad (604).

3. A large-span hollow steel structure welding positioning device according to claim 1, characterized in that: The adjustment component (5) comprises a connecting sleeve (501), a displacement guide rail (502) is fixedly mounted on one end of the connecting sleeve (501), a docking block (503) is slidably mounted on the inner wall of the displacement guide rail (502), an adjustment motor (504) is fixedly mounted on one side of the docking block (503), and an output end of the adjustment motor (504) is fixedly connected to one side of a fixed clamping frame (601).

4. A large-span hollow steel structure welding positioning device according to claim 3, characterized in that: The outer wall cover of the regulating motor (504) is provided with a docking plate (505), and a plurality of connecting rods (506) are fixedly connected between the outer wall of the docking plate (505) and the fixed clamping frame (601).

5. The large-span hollow steel structure welding positioning device according to claim 1 is characterized in that: The lifting and adjusting mechanism (4) comprises a lifting frame (401), and driving components are arranged on both sides of the inner wall of the lifting frame (401), and the driving components comprise a driving motor (405), and the output end of the driving motor (405) is fixedly connected with a driving gear (404), and one side of the driving gear (404) is meshedly connected with a transmission gear (403), and the middle part of the transmission gear (403) is fixedly connected with a transmission rod, and the middle part of the transmission rod is fixedly connected with a lifting guide wheel (402), and the two sides of the column (2) are provided with guide grooves (3), and the lifting guide wheel (402) is rollingly connected in the guide grooves (3).

6. The large-span hollow steel structure welding positioning device according to claim 1 is characterized in that: One end of the fixed clamping frame (601) is fixedly connected to a snap-in frame, the inner wall of the snap-in frame is snap-connected to an air supply pipe (7), one end of the air supply pipe (7) is fixedly connected to an air supply nozzle, and a strip groove is provided on one side of the air supply nozzle.

7. The large-span hollow steel structure welding positioning device according to claim 1 is characterized in that: The column (2) comprises a plurality of vertically spliced ​​sections, and the plurality of spliced ​​sections are sequentially snap-connected to form the column (2).

8. The large-span hollow steel structure welding positioning device according to claim 1 is characterized in that: The bottom of the column (2) is fixedly connected to a base (1), and a plurality of mounting grooves are provided on the bottom edge of the base (1). Lifting cylinders (8) are fixedly installed on the inner walls of the plurality of mounting grooves, and a push-off plate (9) is fixedly connected to the output end of the lifting cylinder (8).

9. A large-span hollow steel structure welding positioning construction method, characterized in that: The following steps are involved: Step 1: Place the column (2) at the welding construction position; Step 2: Slide the lifting frame (401) and adjust the movable support frame so that the end of the steel structure to be welded is located in the clamping assembly (6); Step 3: Lock the steel structure by controlling the movable support frame to move close to the fixed support frame and cooperating with the clamping cylinder to drive the clamping plate to move downward; Step 4: The clamping assembly (6) is driven to translate by the shifting guide rail (502), the clamping assembly (6) is driven to rotate by the adjusting motor (504), and the clamping assembly (6) is driven to move up and down by the lifting and lowering adjustment mechanism (4), so that the welding position of the steel structure is aligned, thereby realizing the positioning operation of the steel structure; Step 5: Sending hot air through the hot air slot (606) to preheat the welding position; Step 6: After preheating, weld the steel structure using handheld welding equipment.

10. A large-span hollow steel structure welding positioning construction method according to claim 9, characterized in that: Before step 5, first use the handheld air supply pipe to supply air to the welding position to remove dust from the welding position.

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