Welding positioning device for large-span steel structure building construction

Abstract

The invention relates to the field of welding devices, in particular to a welding positioning device for large-span steel structure building construction, which comprises a bottom frame, a plurality of supporting plates for placing steel structural parts are mounted on the bottom frame, and cylinders are connected between the two ends of each supporting plate and the bottom frame; the supporting plate comprises a main plate body, a pair of rectangular through holes are formed in the main plate body, a plurality of auxiliary through holes are formed between the rectangular through holes, the lower end of the main plate body is fixedly connected with a frame bag covering the rectangular through holes, and a working arm is arranged on the upper side of the bottom frame. The first fixing unit and the second fixing unit are installed on the supporting plate, and the position of the first fixing unit and the position of the second fixing unit are automatically adjusted by presetting the placing coordinates of the steel structure on the supporting plate, utilizing the positioning data of the positioning holes and the strip-shaped holes in the supporting plate and combining the working arm. Complex positioning requirements during welding of different types of steel structural parts in a large-span steel structure can be met conveniently, and automatic positioning installation and accurate positioning can be achieved conveniently.

Description

Technical Field

[0001] The invention relates to a steel structure welding positioning device, in particular to a welding positioning device for large-span steel structure building construction applied in the field of welding devices. Background Art

[0002] Existing welding positioning devices for large-span steel structure construction usually include precise mechanical positioning systems and advanced electronic measurement technology to ensure high accuracy and stability during welding. These devices usually use laser tracking systems, automatically adjusted fixtures and high-precision sensors to monitor and adjust the position and angle of components in real time to ensure accurate alignment of welded joints. In addition, some advanced positioning devices are also integrated with computer control systems to automatically adjust the welding position through pre-programmed parameters to improve construction efficiency and welding quality. The application of these technologies has significantly improved the construction accuracy and safety of large-span steel structure buildings, while reducing manual operation errors and construction time.

[0003] The Chinese invention CN119115360A specification discloses a multi-angle adjustable welding device and welding method for a large-span steel structure, and relates to the technical field of welding devices. The multi-angle adjustable welding device for a large-span steel structure is conducive to adjusting the welding angle of the steel structure, is easy to operate, is conducive to lifting the steel structure, quickly welds the bottom of the steel structure, saves physical strength, and is convenient for timely cleaning of welding slag generated during welding to prevent welding slag from affecting product quality.

[0004] The specification of Chinese invention CN115229371A discloses a large-span arch steel structure truss bridge node welding device. By setting an air intake hood, a filter cavity, a photocatalyst filter and a fan for coordinated use, when a worker uses a welding gun to weld, the fan switch can be turned on while welding, and the gas with a pungent odor generated by welding is pumped into the partition through the air intake hood and discharged after being purified by the filter cavity, thereby achieving the benefits of improving the working environment and reducing harm to the health of workers.

[0005] Existing large-span steel structures are often complex in structure, and their structural parts are inconvenient to position during welding. They are often manually placed and manually positioned and fixed before manual welding, or manually positioned and fixed before collecting position data and then welding through automated welding equipment, which is very troublesome. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing large-span steel structures are often complex in structure, and it is inconvenient to position their structural parts during welding. They are often manually placed and manually positioned and fixed before manual welding, or manually positioned and fixed before collecting position data and then welding is performed through an automated welding device, which is very troublesome.

[0007] In order to solve the above problems, the present invention provides a welding positioning device for large-span steel structure construction, comprising a bottom frame, on which a plurality of support plates for placing steel structure members are mounted, and cylinders are connected between both ends of the support plates and the bottom frame; The support plate includes a main board body, a pair of rectangular through holes are opened on the main board body, a plurality of auxiliary through holes are opened between the pair of rectangular through holes, a frame pocket covering the rectangular through holes is fixedly connected to the lower end of the main board body, and a plurality of positioning holes and strip holes are opened on the main board body; At least one pair of transverse guide rails is provided on the upper side of the bottom frame, a bracket is connected between the transverse guide rails and the bottom frame, a movable plate is connected between the movable ends of the pair of transverse guide rails, a longitudinal guide rail is installed at the lower end of the movable plate, and a working arm is installed at the movable end of the movable plate; The working arm includes a mechanical arm body, the movable end of the mechanical arm body is rotatably connected to a protective shell, a pair of clamping plates are slidably connected to the protective shell, a cross shaft is inserted in the middle of the protective shell, a double-axis cylinder matching the clamping plates is installed on the protective shell, a motor matching the cross shaft is installed in the protective shell, a telescopic shaft is connected between the power output end of the motor and the cross shaft, and an electric push rod is connected between the movable end of the telescopic shaft and the inner wall of the protective shell; The support plate is provided with a first fixing unit and a second fixing unit which match the positioning hole and the strip hole respectively. The first fixing unit is used to limit the edge of the steel structure, and the second fixing unit is used to support the steel structure.

[0008] In the above-mentioned welding positioning device for large-span steel structure construction, it is easy to realize the complex positioning requirements when welding different types of steel structural parts in large-span steel structures, and it is easy to realize automated positioning installation and precise positioning.

[0009] As a further improvement of the present application, the first fixing unit includes a limit block, a first threaded rod is threadedly connected to the limit block, and a first pressing plate is rotatably connected to the first threaded rod; The second fixing unit includes a lower strip, the bottom end of the lower strip is fixedly connected to a clamping strip, the upper side of the lower strip is provided with a supporting strip, a telescopic rod is connected between one end of the lower strip and the supporting strip, the other end of the lower strip is rotatably connected to a second threaded rod, the second threaded rod is threadedly connected to the supporting strip, and a second pressing plate is rotatably connected to the second threaded rod.

[0010] As a further improvement of the present application, the positioning holes are distributed at both ends of the main board body and on both sides of the rectangular through hole, and the strip holes are distributed on both sides of the auxiliary through hole and between the auxiliary through hole and the rectangular through hole.

[0011] As a further improvement of the present application, the maximum height of the first fixing unit and the second fixing unit is smaller than the distance between the frame pocket and the upper surface of the main board body, and the maximum length of the first fixing unit and the second fixing unit is smaller than the width of the rectangular through hole.

[0012] As another improvement of the present application, auxiliary rings are connected to the first pressing plate and the second pressing plate, the first threaded rod and the second threaded rod are respectively arranged in the middle of the two auxiliary rings, and a damping layer is laid on the outer ends of the auxiliary rings.

[0013] As another improvement of the present application, the frame pocket includes a plurality of evenly distributed ladder frames, and the spacing between two adjacent ladder frames is greater than the diameter of the first threaded rod and less than the width of the second fixing unit.

[0014] As another improvement of the present application, an image acquisition device and a laser ranging sensor are installed on the protective shell, and a displacement sensor is installed on the support plate.

[0015] As another improvement of the present application, an auxiliary positioning system is also included, the auxiliary positioning system includes a processor, and the processor is connected to a control module, a data processing module, a monitoring module, a data storage module and a communication module; The control module is used to control the designated equipment to work according to the set program; The data processing module is used to process monitoring data; The monitoring module is used to collect monitoring data, including image data, pallet displacement data and working arm positioning data; The data storage module is used to store monitoring data and preset parameters. The data storage module stores initial coordinate data of the positioning holes and the strip holes and parameter data of the first fixing unit and the second fixing unit. The initial coordinate data of the positioning holes and the strip holes are determined according to a coordinate system established with the bottom frame as a reference. The communication module is used to establish a communication connection with an external device.

[0016] In summary, this solution presets the placement coordinates of the steel structure on the pallet, utilizes the positioning data of the positioning holes and strip holes on the pallet, and combines the working arm with the automated position adjustment of the first fixed unit and the second fixed unit to facilitate the realization of complex positioning requirements during welding of different types of steel structural parts in large-span steel structures, and facilitates automated positioning installation and precise positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application; Figure 2 for Figure 1 The structural diagram at A in the middle; Figure 3This is a three-dimensional diagram of a support plate according to the first embodiment of the present application; Figure 4 This is a side sectional view of the working arm of the first embodiment of the present application; Figure 5 for Figure 4 The structural diagram at B in the middle; Figure 6 This is a three-dimensional diagram of the first fixing unit of two implementation modes of the present application; Figure 7 This is a three-dimensional diagram of the second fixing unit in two implementation modes of the present application; Figure 8 It is a partial schematic diagram of the working arm of two implementation modes of the present application when clamping the second fixing unit; Fig. 9 Schematic diagram of coordinate system established with the bottom frame as reference for three implementation modes of the present application.

[0018] Description of the numbers in the figure: 1. Bottom frame; 2. Support plate; 21. Main board; 22. Frame pocket; 23. Positioning hole; 24. Strip hole; 3. Horizontal guide rail; 4. Movable plate; 5. Working arm; 51. Robot arm body; 52. Protective shell; 53. Clamp plate; 54. Cross axis; 6. First fixing unit; 61. Limit block; 62. First threaded rod; 63. First pressure plate; 7. Second fixing unit; 71. Lower strip plate; 72. Card strip; 73. Support strip; 74. Second threaded rod; 75. Second pressure plate. DETAILED DESCRIPTION

[0019] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0020] The first implementation method: Figure 1-Figure 8 A welding positioning device for large-span steel structure construction is shown, comprising a bottom frame 1, on which a plurality of support plates 2 for placing steel structure members are mounted, and cylinders are connected between both ends of the support plates 2 and the bottom frame 1, and the cylinders are used to drive the support plates 2 to move along the length direction of the bottom frame 1; The support plate 2 includes a main board body 21, a pair of rectangular through holes are opened on the main board body 21, a plurality of auxiliary through holes are opened between the pair of rectangular through holes, a frame pocket 22 covering the rectangular through holes is fixedly connected to the lower end of the main board body 21, and a plurality of positioning holes 23 and strip holes 24 are opened on the main board body 21; the positioning holes 23 are distributed at both ends of the main board body 21 and on both sides of the rectangular through holes, and the strip holes 24 are distributed on both sides of the auxiliary through holes and between the auxiliary through holes and the rectangular through holes.

[0021] The support plate 2 is provided with a first fixing unit 6 and a second fixing unit 7 which match the positioning hole 23 and the strip hole 24 respectively. The first fixing unit 6 is used to limit the edge of the steel structure, and the second fixing unit 7 is used to support the steel structure.

[0022] The frame pocket 22 includes a plurality of evenly distributed ladder frames, and the distance between two adjacent ladder frames is greater than the diameter of the first threaded rod 62 and less than the width of the second fixing unit 7; the frame pocket 22 is used to place the first fixing unit 6 and the second fixing unit 7; At least one pair of transverse guide rails 3 are provided on the upper side of the bottom frame 1, a bracket is connected between the transverse guide rails 3 and the bottom frame 1, a movable plate 4 is connected between the movable ends of the pair of transverse guide rails 3, a longitudinal guide rail is installed at the lower end of the movable plate 4, and a working arm 5 is installed at the movable end of the movable plate 4; The working arm 5 includes a mechanical arm body 51, the movable end of the mechanical arm body 51 is rotatably connected to a protective shell 52, a pair of clamping plates 53 are slidably connected to the protective shell 52, a cross shaft 54 ​​is inserted in the middle of the protective shell 52, a double-axis cylinder matching the clamping plate 53 is installed on the protective shell 52, a motor matching the cross shaft 54 ​​is installed in the protective shell 52, a telescopic shaft is connected between the power output end of the motor and the cross shaft 54, and an electric push rod is connected between the movable end of the telescopic shaft and the inner wall of the protective shell 52; an image acquisition device and a laser ranging sensor are installed on the protective shell 52, and a displacement sensor is installed on the support plate 2; the image acquisition device is used to assist in identifying the first fixed unit 6 and the second fixed unit 7, and the laser ranging sensor is used to detect the height data of the second fixed unit 7; When the working arm 5 is working, it drives the protective shell 52 to move in three-dimensional space, controls the operation of the robot arm body 51 to adjust the position of the protective shell 52, and then controls the double-axis cylinder to adjust the distance between the pair of clamping plates 53, so that the pair of clamping plates 53 clamps the first fixing unit 6 or the second fixing unit 7; The working arm 5 is used to install the first fixing unit 6 or the second fixing unit 7, and the working arm 5 adjusts the position of the first fixing unit 6 or the second fixing unit 7 according to the placement position of the workpiece to be welded on the support plate 2; When the present scheme is working, before placing the steel structure component to be processed on the support plate 2, the position of the first fixing unit 6 or the second fixing unit 7 is first adjusted by controlling the working arm 5. The technicians in this field control the working arm 5 to take out the required number of the first fixing units 6 or the second fixing units 7 from the frame pocket 22 according to the welding requirements of the steel structure and then install them on the support plate 2; the edge of the steel structure to be welded is limited by the first fixing unit 6, and the steel structure to be welded is supported by the second fixing unit 7, so as to meet the positioning requirements when welding steel structures of different shapes.

[0023] This implementation method facilitates efficient and accurate steel structure welding positioning; through the flexible adjustment of the first fixing unit 6 and the second fixing unit 7 by the working arm 5, it is easy to quickly adapt to steel structure components of different shapes and sizes, and it is easy to meet the welding requirements of complex steel structures when welding large-span steel structures.

[0024] The second implementation method: The components identical or corresponding to those in Example 1 are marked with the same reference numerals as those in Example 1. For the sake of simplicity, only the differences from Example 1 are described below. The differences between Example 2 and Example 1 are as follows: Figure 6-Figure 7 As shown, the first fixing unit 6 includes a limit block 61, the limit block 61 is provided with at least one plane edge, a first threaded rod 62 is threadedly connected to the limit block 61, and a first pressing plate 63 is rotatably connected to the first threaded rod 62; The second fixing unit 7 includes a lower plate 71, the bottom end of which is fixedly connected to a clamping strip 72, a supporting strip 73 is provided on the upper side of the lower plate 71, a groove is provided on the upper end of the supporting strip 73, a telescopic rod is connected between one end of the lower plate 71 and the supporting strip 73, the other end of the lower plate 71 is rotatably connected to a second threaded rod 74, the second threaded rod 74 is threadedly connected to the supporting strip 73, and a second pressing plate 75 is rotatably connected to the second threaded rod 74.

[0025] The tops of the first threaded rod 62 and the second threaded rod 74 are both provided with docking grooves matching the cross shaft 54; when the first fixing unit 6 or the second fixing unit 7 is installed, the cross shaft 54 ​​is docked with the docking groove, thereby rotating the first threaded rod 62 and the second threaded rod 74; by rotating and pressing down the first threaded rod 62, the bottom of the first threaded rod 62 is inserted into the positioning hole 23, thereby fixing the first fixing unit 6; By rotating the second threaded rod 74, the support bar 73 is displaced up and down along the second threaded rod 74; the height of the support bar 73 is adjusted so as to carry steel structures of different heights; the height of the support bar 73 is detected by the laser ranging sensor on the protective shell 52; if the height of the support bar 73 does not meet the placement requirements of the steel structure to be carried, the working arm 5 is driven to move so that the cross shaft 54 ​​is docked with the second threaded rod 74, and then the cross shaft 54 ​​is driven to rotate by the motor to adjust the height of the support bar 73; The maximum height of the first fixing unit 6 and the second fixing unit 7 is smaller than the distance between the frame pocket 22 and the upper surface of the main board body 21 , and the maximum length of the first fixing unit 6 and the second fixing unit 7 is smaller than the width of the rectangular through hole.

[0026] Auxiliary rings are connected to the first pressure plate 63 and the second pressure plate 75, and the first threaded rod 62 and the second threaded rod 74 are respectively arranged in the middle of the two auxiliary rings, and a damping layer is laid on the outer ends of the auxiliary rings; when the first fixing unit 6 and the second fixing unit 7 are installed, the auxiliary rings are clamped by controlling a pair of clamping plates 53, and then the protective shell 52 is rotated to rotate the first pressure plate 63 and the second pressure plate 75 to the upper side of the steel structure to limit the steel structure.

[0027] This embodiment facilitates accurate positioning and stable support of the steel structure before welding. The design of the first and second fixing units not only ensures the stability of the steel structure during installation, but also the height-adjustable function of the support bar 73 enables the second fixing unit 7 to adapt to steel structures of different sizes, thus facilitating a wider range of applications.

[0028] The third implementation method: The components identical or corresponding to those in Example 1 are marked with the same reference numerals as those in Example 1. For the sake of simplicity, only the differences from Example 1 are described below. The differences between Example 3 and Example 1 are as follows: Fig. 9 As shown, it also includes an auxiliary positioning system, which includes a processor, and the processor is connected to a control module, a data processing module, a monitoring module, a data storage module and a communication module; The control module is used to control the specified equipment to work according to the set program; the control module receives instructions and coordinates the actions of actuators such as cylinders and motors; The data processing module is used to process the monitoring data; the data processing module processes the displacement data and the image data to generate the positioning parameters of the first fixing unit 6 and the second fixing unit 7; The monitoring module is used to collect monitoring data, including image data, displacement data of the pallet 2 and positioning data of the working arm 5; The data storage module is used to store monitoring data and preset parameters. The data storage module stores the initial coordinate data of the positioning hole 23 and the strip hole 24 and the parameter data of the first fixing unit 6 and the second fixing unit 7. The initial coordinate data of the positioning hole 23 and the strip hole 24 is determined according to the coordinate system established with the bottom frame 1 as a reference. The data storage module also stores historical operation records. The communication module is used to establish a communication connection with an external device, such as a feeding device and a welding device; a technician in this field sets up a suitable external device for connection; the feeding device is used to place the steel structure at a specified position on the pallet 2, and a technician in this field selects a suitable feeding device to establish a communication connection with the communication module. It should be noted that when the support plate 2 is displaced by the cylinder, the coordinates of the corresponding positioning holes 23 and the strip holes 24 thereon are adjusted according to the displacement distance; Before welding, the technicians input the steel structure data to be welded, including the model data or parameter data, into the data processing module, and then preset the placement coordinates of the steel structure on the multiple support plates 2, and then set the designated positioning holes 23 and the strip holes 24 to install the first fixing unit 6 and the second fixing unit 7 according to the placement coordinates; When the first fixing unit 6 is positioned, its plane edge coincides with the edge of the steel structure it limits, and when the second fixing unit 7 is positioned, its long side is perpendicular to the steel structure to be supported or one of its sides coincides with the edge of a steel structure; After the setting is completed, the working arm 5 installs the first fixing unit 6 and the second fixing unit 7 to the specified coordinate positions in turn. When the above-set specified positioning holes 23 and strip holes 24 complete the installation of the first fixing unit 6 or the second fixing unit 7, the work is completed.

[0029] This embodiment realizes the automatic operation of the welding positioning device. By presetting the placement coordinates of the steel structure on the support plate 2 and combining the designated positioning holes 23 and the strip holes 24 to install the first fixing unit 6 and the second fixing unit 7, the accuracy of welding positioning is further ensured.

[0030] In summary, this solution presets the placement coordinates of the steel structure on the pallet 2, utilizes the positioning data of the positioning holes 23 and the strip holes 24 on the pallet 2, and combines the working arm 5 with the automated position adjustment of the first fixed unit 6 and the second fixed unit 7, so as to facilitate the realization of the complex positioning requirements when welding different types of steel structural parts in large-span steel structures, and facilitates the realization of automated positioning installation and precise positioning.

[0031] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A welding positioning device for large-span steel structure construction, comprising a bottom frame (1), on which a plurality of support plates (2) for placing steel structure members are mounted, characterized in that: Cylinders are connected between both ends of the support plate (2) and the bottom frame (1); The support plate (2) comprises a main plate body (21), a pair of rectangular through holes are formed on the main plate body (21), a plurality of auxiliary through holes are formed between the pair of rectangular through holes, a frame pocket (22) covering the rectangular through holes is fixedly connected to the lower end of the main plate body (21), and a plurality of positioning holes (23) and strip holes (24) are formed on the main plate body (21); At least one pair of transverse guide rails (3) is provided on the upper side of the bottom frame (1); a bracket is connected between the transverse guide rails (3) and the bottom frame (1); a movable plate (4) is connected between the movable ends of the pair of transverse guide rails (3); a longitudinal guide rail is installed at the lower end of the movable plate (4); and a working arm (5) is installed at the movable end of the movable plate (4); The working arm (5) comprises a mechanical arm body (51), the movable end of the mechanical arm body (51) is rotatably connected to a protective shell (52), a pair of clamping plates (53) are slidably connected to the protective shell (52), a cross shaft (54) is inserted in the middle of the protective shell (52), a double-axis cylinder matching the clamping plates (53) is installed on the protective shell (52), an electric motor matching the cross shaft (54) is installed in the protective shell (52), a telescopic shaft is connected between the power output end of the electric motor and the cross shaft (54), and an electric push rod is connected between the movable end of the telescopic shaft and the inner wall of the protective shell (52); The support plate (2) is provided with a first fixing unit (6) and a second fixing unit (7) which are matched with the positioning hole (23) and the strip hole (24) respectively; the first fixing unit (6) is used to limit the edge of the steel structure; and the second fixing unit (7) is used to support the steel structure.

2. A welding positioning device for large-span steel structure construction according to claim 1, characterized in that: The first fixing unit (6) comprises a limit block (61), a first threaded rod (62) being threadedly connected to the limit block (61), and a first pressing plate (63) being rotatably connected to the first threaded rod (62); The second fixing unit (7) comprises a lower strip plate (71), the bottom end of the lower strip plate (71) is fixedly connected to a clamping strip (72), the upper side of the lower strip plate (71) is provided with a supporting strip (73), a telescopic rod is connected between one end of the lower strip plate (71) and the supporting strip (73), the other end of the lower strip plate (71) is rotatably connected to a second threaded rod (74), the second threaded rod (74) is threadedly connected to the supporting strip (73), and a second pressing plate (75) is rotatably connected to the second threaded rod (74).

3. A welding positioning device for large-span steel structure construction according to claim 2, characterized in that: The positioning holes (23) are distributed at both ends of the main board body (21) and on both sides of the rectangular through hole, and the strip holes (24) are distributed on both sides of the auxiliary through hole and between the auxiliary through hole and the rectangular through hole.

4. A welding positioning device for large-span steel structure construction according to claim 3, characterized in that: The maximum height of the first fixing unit (6) and the second fixing unit (7) is less than the distance between the frame pocket (22) and the upper surface of the main board body (21), and the maximum length of the first fixing unit (6) and the second fixing unit (7) is less than the width of the rectangular through hole.

5. A welding positioning device for large-span steel structure construction according to claim 4, Features: The first pressing plate (63) and the second pressing plate (75) are both connected to auxiliary rings, the first threaded rod (62) and the second threaded rod (74) are respectively arranged in the middle of the two auxiliary rings, and the outer ends of the auxiliary rings are provided with damping layers.

6. A welding positioning device for large-span steel structure construction according to claim 5, characterized in that: The frame pocket (22) comprises a plurality of evenly distributed ladder frames, and the distance between two adjacent ladder frames is greater than the diameter of the first threaded rod (62) and less than the width of the second fixing unit (7).

7. A welding positioning device for large-span steel structure construction according to claim 6, characterized in that: An image acquisition device and a laser distance measuring sensor are installed on the protective shell (52), and a displacement sensor is installed on the support plate (2).

8. A welding positioning device for large-span steel structure construction according to claim 7, characterized in that: It also includes an auxiliary positioning system, which includes a processor, and the processor is connected to a control module, a data processing module, a monitoring module, a data storage module and a communication module; The control module is used to control the designated equipment to work according to the set program; The data processing module is used to process monitoring data; The monitoring module is used to collect monitoring data, the monitoring data including image data, displacement data of the support plate (2) and positioning data of the working arm (5); The data storage module is used to store monitoring data and preset parameters, and the data storage module stores initial coordinate data of the positioning hole (23) and the strip hole (24) and parameter data of the first fixing unit (6) and the second fixing unit (7); the initial coordinate data of the positioning hole (23) and the strip hole (24) are determined according to a coordinate system established with the bottom frame (1) as a reference; The communication module is used to establish a communication connection with an external device.

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