Field welding device for steel box girder

Abstract

The utility model discloses an on-site welding device for a steel box girder, and relates to the technical field of welding. The welding device comprises a moving seat, a rotating plate, a lifting mechanism, a mounting frame and a welding assembly, the moving seat is arranged at the top of a steel box girder partition plate, a rotating plate is rotationally connected to the end face of the moving seat, a lifting mechanism is fixed to the rotating plate and drives the mounting frame to ascend and descend in a mechanical transmission mode, and the welding assembly is fixed to the bottom of the mounting frame; the moving seat comprises a U-shaped plate, a top roller, a side frame body and a side roller; a plurality of top rolling wheels distributed at equal intervals are rotationally arranged at the upper end in the U-shaped plate, and side frame bodies are arranged on the two sides of the lower end in the U-shaped plate. By arranging the movable seat and the lifting mechanism, movable welding in the horizontal direction and movable welding in the vertical direction can be achieved, adjustability is good, welding quality and efficiency are improved, and the problems that an existing field welding device is low in welding efficiency and poor in adjustability are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, in particular to an on-site welding device for a steel box beam. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a common structural form for long-span bridges. It is generally used on bridges with larger spans. It is called a steel box girder because it looks like a box. Steel box girders are generally connected by a full welding method, including top plate, bottom plate, web plate, transverse diaphragm, longitudinal diaphragm and stiffening ribs. Steel box girders have many advantages, such as good seismic performance and excellent lateral stability, which can ensure the stability and safety of bridges in the event of a large earthquake. At the same time, its steel structure is corrosion-resistant and fire-resistant, with good durability, and is not easily damaged or deformed during long-term use.

[0003] Steel box girders are widely used in the construction of large bridges, highways, airports, high-speed railways, etc., especially bridges that need to bear large loads and spans, such as large highway bridges, highway bridges, railway bridges, etc. On-site welding of steel box girders requires the use of special welding equipment.

[0004] After searching, the announcement number CN211516491U and the announcement date 2020-09-18 disclose a welding device for a steel box girder tie arch bridge, which belongs to the field of construction technology. The welding device is used to perform welding operations on a steel box girder tie arch bridge. The steel box girder tie arch bridge includes two parallel main beams and multiple middle cross beams. The middle cross beams are perpendicular to the main beams. The bottom of each middle cross beam has a platform, and a hollow channel is formed between two adjacent platforms. The bottom of the welding device is provided with two rows of rollers for movement. The two rows of rollers are respectively located on two adjacent platforms. The welding device moves in the channel through the rollers; the height of the welding device is less than the distance between the platform and the bridge deck of the steel box girder tie arch bridge. The size of the welding device can be specifically determined according to the structure and size of the steel box girder tie arch bridge on site. The welding device has a compact structure and can move horizontally on the platform, which saves costs and increases the working space, making it convenient to carry out welding operations under the middle cross beam.

[0005] The patent has the following shortcomings:

[0006] 1. The welding device can only move along the steel box girder, and it is difficult to achieve mobile welding in the horizontal direction and mobile welding in the vertical direction, and the welding efficiency is poor;

[0007] 2. The welding device has poor adjustability and is difficult to adapt to the use of steel box girders of different specifications;

[0008] Therefore, we provide a field welding device for a steel box girder to solve the above-mentioned problems. Utility Model Content

[0009] The utility model aims to provide an on-site welding device for a steel box girder. By arranging a movable seat and a lifting mechanism, movable welding in the horizontal direction and movable welding in the vertical direction can be realized, and the adjustability is good, so as to improve the welding quality and efficiency, and solve the problems of low welding efficiency and poor adjustability of the existing on-site welding device.

[0010] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0011] The utility model is an on-site welding device for a steel box girder, comprising a moving seat, a rotating plate, a lifting mechanism, a mounting frame and a welding assembly; the moving seat is placed on the top of a steel box girder partition, the rotating plate is rotatably connected to the end surface of the moving seat, the lifting mechanism is fixed to the rotating plate, the lifting mechanism drives the mounting frame to rise and fall by mechanical transmission, and the welding assembly is fixed to the bottom of the mounting frame.

[0012] The movable seat comprises a U-shaped plate, a top roller, a side frame body and side rollers; a plurality of top rollers distributed at equal intervals are rotatably arranged on the inner upper end of the U-shaped plate, the side frame bodies are arranged on both sides of the inner lower end of the U-shaped plate, and a plurality of side rollers distributed at equal intervals are rotatably arranged inside the side frame body.

[0013] The utility model is further configured that an adjusting column is fixed on the side frame body, and the adjusting column movably passes through the fixing sleeve on the outer side surface of the U-shaped plate and is locked by a first knob.

[0014] The utility model is further configured that a rotating rod is fixed on the narrow end surface of the rotating plate, and the rotating rod is rotatably connected to the insertion hole on the end surface of the U-shaped plate and is locked by a second knob.

[0015] The utility model is further configured as follows: the lifting mechanism includes a motor, a screw, a bearing seat, a nut seat and a guide rod; the motor is fixed to the rotating plate, the output shaft of the motor is fixedly connected to one end of the screw, the other end of the screw is rotatably connected to the bearing seat, the bearing seat is supported by two guide rods, and the guide rod is fixed to the rotating plate; the nut seat is movablely sleeved on the screw.

[0016] The utility model is further configured as follows: the mounting frame includes a first L-shaped plate and a second L-shaped plate; the first L-shaped plate is fixedly connected to the nut seat, and the guide rod movably passes through the first L-shaped plate; the second L-shaped plate is movably inserted into the first L-shaped plate and locked by a third knob.

[0017] The utility model is further configured as follows: the welding assembly includes a ball joint, a ball joint, a mounting sleeve and a welding gun; the top of the ball joint is fixedly connected to the bottom of the second L-shaped plate, the ball joint is ball-connected to the ball joint, and are locked by a fourth knob; the mounting sleeve is fixed to the bottom end of the ball joint, the welding gun moves through the mounting sleeve, and is locked by a fifth knob.

[0018] The utility model is further configured that support plates are fixed on both sides of the installation sleeve, cameras are arranged on the two support plates, and the two cameras are respectively used to photograph the surface conditions before and after welding.

[0019] The utility model is further configured such that a card slot is also provided at the bottom of the second L-shaped plate, and the card slot is used for installing a welding protective cover.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model can realize mobile welding in the horizontal direction and mobile welding in the vertical direction by arranging a movable seat and a lifting mechanism, and the positions of the left and right side frames are adjustable, so that the movable seat can adapt to the use of steel box beam partitions of different specifications, and the length of the mounting frame can be adjusted to adapt to the use of steel box beam partitions of different heights.

[0022] 2. The utility model arranges a ball joint, a ball joint, a fourth knob, a mounting sleeve and a fifth knob, so that the orientation and extension length of the welding gun can be adjusted. The surface conditions before and after welding are photographed by two cameras, so that real-time monitoring and control of the welding process can be achieved, thereby improving welding quality and efficiency.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The figure is a schematic assembly diagram of an on-site welding device for a steel box girder in use.

[0026] Figure 2 It is a three-dimensional schematic diagram of the overall structure of an on-site welding device for a steel box girder.

[0027] Figure 3 The present invention is a schematic diagram of the structure of a movable base of an on-site welding device for a steel box girder.

[0028] Figure 4 The present invention is a schematic diagram of the structure of a rotating plate and a lifting mechanism of an on-site welding device for a steel box girder.

[0029] Figure 5 A schematic diagram of the welding assembly structure of a field welding device for a steel box girder Figure 1 .

[0030] Figure 6 A schematic diagram of the welding assembly structure of a field welding device for a steel box girder Figure 2 .

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1-mobile seat, 101-U-shaped plate, 102-top roller, 103-side frame, 104-side roller, 105-adjusting column, 106-fixing sleeve, 107-first knob, 108-jack, 2-rotating plate, 201-rotating rod, 202-second knob, 3-lifting mechanism, 301-motor, 302-screw, 303-bearing seat, 304-nut seat, 305-guide rod, 4-mounting frame, 401-first L-shaped plate, 402-second L-shaped plate, 403-third knob, 404-slot, 5-welding assembly, 501-ball joint, 502-ball joint, 503-fourth knob, 504-mounting sleeve, 505-welding gun, 506-fifth knob, 507-support plate, 508-camera, 6-steel box girder partition. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiments

[0034] See also Figure 1-4 The utility model is an on-site welding device for a steel box girder, comprising a moving seat 1, a rotating plate 2, a lifting mechanism 3, a mounting frame 4 and a welding assembly 5; the moving seat 1 is placed on the top of a steel box girder partition 6, the end surface of the moving seat 1 is rotatably connected with a rotating plate 2, the rotating plate 2 is fixed with a lifting mechanism 3, the lifting mechanism 3 drives the mounting frame 4 to rise and fall by mechanical transmission, and the welding assembly 5 is fixed at the bottom of the mounting frame 4.

[0035] Specifically, the mobile seat 1 includes a U-shaped plate 101, a top roller 102, a side frame body 103 and a side roller 104; a plurality of top rollers 102 distributed at equal intervals are rotatably provided at the internal upper end of the U-shaped plate 101, and side frames 103 are provided on both sides of the internal lower end of the U-shaped plate 101, and a plurality of side rollers 104 distributed at equal intervals are rotatably provided inside the side frame body 103; an adjusting column 105 is fixed on the side frame body 103, and the adjusting column 105 movably passes through a fixing sleeve 106 on the outer surface of the U-shaped plate 101, and is locked by a first knob 107.

[0036] Furthermore, a rotating rod 201 is fixed on the narrow end surface of the rotating plate 2 , and the rotating rod 201 is rotatably connected to the insertion hole 108 on the end surface of the U-shaped plate 101 and is locked by a second knob 202 .

[0037] Furthermore, the lifting mechanism 3 includes a motor 301, a screw rod 302, a bearing seat 303, a nut seat 304 and a guide rod 305; the motor 301 is fixed on the rotating plate 2, the output shaft of the motor 301 is fixedly connected to one end of the screw rod 302, the other end of the screw rod 302 is rotatably connected to the bearing seat 303, the bearing seat 303 is supported by two guide rods 305, and the guide rods 305 are fixed on the rotating plate 2; a nut seat 304 is movablely provided on the screw rod 302.

[0038] The operation process of this embodiment is as follows: based on the specifications of the steel box girder partition 6, the positions of the left and right side frames 103 are adjusted so that the side rollers 104 are in contact with the side surfaces of the steel box girder partition 6. During adjustment, the first knob 107 is loosened, and the adjustment column 105 can freely extend and retract in the fixed sleeve 106. After reaching the desired position, the first knob 107 is tightened; the moving seat 1 is manually or electrically pushed, and the moving seat 1 drives the rotating plate 2, the lifting mechanism 3, the mounting frame 4 and the welding assembly 5 to move, thereby realizing mobile welding in the horizontal direction; the motor 301 drives the screw rod 302 to rotate, the screw rod 302 drives the nut seat 304 to move, the nut seat 304 drives the mounting frame 4 to move, and the mounting frame 4 drives the welding assembly 5 to move, thereby realizing mobile welding in the vertical direction. Specific embodiments

[0039] See also Figure 5 On the basis of the specific embodiment 1, the mounting frame 4 includes a first L-shaped plate 401 and a second L-shaped plate 402 ; the second L-shaped plate 402 is movably inserted into the first L-shaped plate 401 and is locked by a third knob 403 .

[0040] Specifically, the first L-shaped plate 401 is fixedly connected to the nut seat 304 , and the guide rod 305 movably passes through the first L-shaped plate 401 .

[0041] Furthermore, a slot 404 is provided at the bottom of the second L-shaped plate 402, and the slot 404 is used to install a welding shield.

[0042] The operation process of this embodiment is: based on the specifications of the steel box girder partition 6, adjust the extension length of the second L-shaped plate 402. When adjusting, loosen the third knob 403. At this time, the second L-shaped plate 402 can be freely extended and retracted in the first L-shaped plate 401. After reaching the required position, tighten the third knob 403; and based on actual needs, install a welding protective cover to prevent arc light, spatter and harmful gases generated during welding from causing harm to the human body. Specific embodiments

[0043] See also Figure 5-6 On the basis of the first and second specific embodiments, the welding assembly 5 includes a ball joint 501, a ball joint 502, a mounting sleeve 504 and a welding gun 505; the top of the ball joint 501 is fixedly connected to the bottom of the second L-shaped plate 402, the ball joint 501 is ball-connected with the ball joint 502, and is locked by a fourth knob 503; the mounting sleeve 504 is fixed to the bottom end of the ball joint 502, the welding gun 505 movably passes through the mounting sleeve 504, and is locked by a fifth knob 506.

[0044] Furthermore, support plates 507 are fixed on both sides of the installation sleeve 504, and cameras 508 are provided on the two support plates 507. The two cameras 508 are respectively used to photograph the surface conditions before and after welding.

[0045] The operation process of this embodiment is as follows: based on actual needs, adjust the orientation and extension length of the welding gun 505. When adjusting, loosen the fourth knob 503. At this time, the ball joint 502 can rotate freely in the ball joint seat 501. After reaching the desired position, tighten the fourth knob 503 and loosen the fifth knob 506. At this time, the welding gun 505 can freely extend and retract in the mounting sleeve 504. After reaching the desired position, tighten the fifth knob 506. Use two cameras 508 to capture the surface conditions before and after welding, so as to realize real-time monitoring and control of the welding process and improve welding quality and efficiency.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An on-site welding device for a steel box girder, comprising a movable seat (1), a rotating plate (2), a lifting mechanism (3), a mounting frame (4) and a welding assembly (5); characterized in that: The movable seat (1) is placed on the top of the steel box beam partition (6); the rotating plate (2) is rotatably connected to the end surface of the movable seat (1); the lifting mechanism (3) is fixed on the rotating plate (2); the lifting mechanism (3) drives the mounting frame (4) to move up and down by mechanical transmission; and the welding assembly (5) is fixed on the bottom of the mounting frame (4); The movable seat (1) comprises a U-shaped plate (101), a top roller (102), a side frame body (103) and a side roller (104); The upper end of the U-shaped plate (101) is rotatably provided with a plurality of top rollers (102) distributed at equal intervals, and the side frame bodies (103) are provided on both sides of the lower end of the U-shaped plate (101), and the side frame bodies (103) are rotatably provided with a plurality of side rollers (104) distributed at equal intervals.

2. The on-site welding device for a steel box girder according to claim 1, characterized in that: An adjustment column (105) is fixed on the side frame body (103); the adjustment column (105) movably passes through a fixing sleeve (106) on the outer side of the U-shaped plate (101) and is locked by a first knob (107).

3. The on-site welding device for a steel box girder according to claim 1, characterized in that: A rotating rod (201) is fixed on the narrow end surface of the rotating plate (2), and the rotating rod (201) is rotatably connected to the insertion hole (108) on the end surface of the U-shaped plate (101) and is locked by a second knob (202).

4. The on-site welding device for a steel box girder according to claim 1, characterized in that: The lifting mechanism (3) comprises a motor (301), a screw rod (302), a bearing seat (303), a nut seat (304) and a guide rod (305); The motor (301) is fixed on the rotating plate (2), the output shaft of the motor (301) is fixedly connected to one end of the screw rod (302), the other end of the screw rod (302) is rotatably connected to the bearing seat (303), the bearing seat (303) is supported by two guide rods (305), and the guide rods (305) are fixed on the rotating plate (2); The nut seat (304) is provided on a movable sleeve of the screw rod (302).

5. The on-site welding device for a steel box girder according to claim 4, characterized in that: The mounting frame (4) comprises a first L-shaped plate (401) and a second L-shaped plate (402); The first L-shaped plate (401) is fixedly connected to the nut seat (304), and the guide rod (305) movably passes through the first L-shaped plate (401); The second L-shaped plate (402) is movably inserted into the first L-shaped plate (401) and is locked by a third knob (403).

6. The on-site welding device for a steel box girder according to claim 5, characterized in that: The welding assembly (5) comprises a ball joint (501), a ball joint (502), a mounting sleeve (504) and a welding gun (505); The top of the ball joint (501) is fixedly connected to the bottom of the second L-shaped plate (402), and the ball joint (501) is ball-connected to the ball joint (502) and locked by a fourth knob (503); The mounting sleeve (504) is fixed to the bottom end of the ball joint (502); the welding gun (505) movably passes through the mounting sleeve (504) and is locked by a fifth knob (506).

7. The on-site welding device for a steel box girder according to claim 6, characterized in that: Support plates (507) are fixed on both sides of the installation sleeve (504), and cameras (508) are arranged on the two support plates (507). The two cameras (508) are respectively used to photograph the surface conditions before and after welding.

8. The on-site welding device for a steel box girder according to claim 5, characterized in that: The bottom of the second L-shaped plate (402) is also provided with a slot (404), and the slot (404) is used for installing a welding protective cover.

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