An auxiliary welding system for steel truss assembly of cable-stayed bridges

Abstract

The invention discloses an assembly welding auxiliary system for steel trusses of cable-stayed bridges, which relates to the technical field of steel structure bridge manufacturing, including a welding system, a multi-angle control system, a positioning system, a hoisting system, a communication control system and an energy supply system. A positioning structure is arranged on the top of a welding mounting seat, a second hydraulic cylinder slowly pushes a blocking block to adjust and squeeze the horizontal position of a limit ring, and the hoisting height of the steel truss is determined by judging the internal pressure of a first hydraulic cylinder. A hoisting assembly is arranged above the positioning structure, and the hoisting rope on the bottom side of a winding assembly is changed by the limit assembly to obtain the intersection height so as to control the hoisting stability of the steel truss and accurately obtain the hoisting displacement beam, and the adjustment structure and the positioning structure are coordinated for positioning to determine the fixed point accuracy of the steel truss.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure bridge manufacturing, in particular to an assembly and welding auxiliary system for steel trusses of cable-stayed bridges. Background Art

[0002] A cable-stayed bridge has towers built on the bridge deck and multiple cables pulled from the towers to one or both sides of the bridge deck. Due to the different shapes and construction locations of the towers, when standing on the bridge deck and observing in the direction of the bridge deck extension, the cables on both sides appear to be A-shaped or H-shaped.

[0003] At present, during assembly and welding installation, the lower deck blocks and trusses are positioned first, and then the upper deck blocks are welded. During the welding process of the upper deck blocks, the upper deck blocks and trusses are first accurately positioned and the welds are fixed with code plates. Since the upper deck blocks are affected by their own weight, they will produce downward deflection, which will cause internal stress in the welds between the upper deck blocks and the trusses, reducing the quality of the welds and increasing the probability of quality hazards inside the welds, thereby affecting the assembly quality of the steel trusses. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides an assembly welding auxiliary system for steel trusses of cable-stayed bridges.

[0005] The present invention is implemented in this way: an auxiliary system for assembling and welding steel trusses of cable-stayed bridges is constructed, and the device includes a welding system, a multi-angle control system, a positioning system, a hoisting system, a communication control system and an energy supply system; the welding system is used for control parts for fixed-point welding of steel trusses of cable-stayed bridges; the multi-angle control system is used for high-precision adjustment parts for adjusting the spatial position and assembly position of steel trusses; the positioning system is used for control parts for adjusting the relative position of steel trusses during assembly; the communication control system is responsible for transmitting processed data to a control terminal through wireless or wired communication; the energy supply system is used to provide the welding system, the multi-angle control system, the positioning system, the hoisting system and the communication control system with the power and hydraulic pressure required by the system, including a cable line power supply system and a voltage-stabilizing hydraulic supply system.

[0006] Preferably, the welding system includes a welding mounting seat; a slide groove is arranged on the rear side of the top of the welding mounting seat, and a hydraulic adjustment component is slidably arranged inside the slide groove; a first adjustable column with a height adjustment function is fixedly installed on the top of the hydraulic adjustment component by bolts.

[0007] Preferably, the positioning system includes a positioning structure fixedly installed on the middle side of the top of the welding mounting seat by bolts; the positioning structure includes a second adjustable column fixedly installed on the middle side of the top of the welding mounting seat by bolts; a groove is provided on the top of the second adjustable column, and a first hydraulic cylinder with height adjustment function is fixedly installed inside the groove; a lower pressure plate is fixedly installed on the top of the piston rod of the first hydraulic cylinder by bolts; a conical positioning block is fixedly installed on the middle side of the top of the lower pressure plate by bolts; a second hydraulic cylinder is fixedly installed on the inner cavity of the conical positioning block by bolts; a blocking block is fixedly installed on the front end of the piston rod of the second hydraulic cylinder by bolts.

[0008] Preferably, the second hydraulic cylinder inside the conical positioning block is distributed in a ring shape with an angle of 30 degrees, and the second hydraulic cylinder is connected to the hydraulic source of the energy supply system through a connecting pipe.

[0009] Preferably, the lifting system includes a lifting assembly arranged on the top of the positioning structure; the lifting assembly includes an adjustment structure slidably arranged on the top of the positioning structure; the adjustment structure is fixedly installed on the bottom side of the winding assembly by bolts; a limiting assembly is fixedly installed on the bottom of the winding assembly platform by bolts, and the lifting rope of the winding assembly passes through the internal through hole of the limiting assembly; a horizontal sensor with data sensing function is fixedly installed on the top of the winding assembly by bolts.

[0010] Preferably, the adjustment structure includes a limit ring slidably arranged on the top of the positioning structure; a ball is rolled on the bottom of the limit ring; the side of the limit ring is fixedly installed on the end of the piston rod of the third hydraulic cylinder by bolts; the side of the cylinder body of the third hydraulic cylinder is plugged and fixed to the rotating shaft of the hydraulic disk, and the hydraulic disk is fixedly installed on the bottom of the winding assembly platform by bolts.

[0011] Preferably, the limit assembly includes a limit block arranged below the winding assembly platform; four groups of through grooves are arranged inside the limit block, and a fourth hydraulic cylinder is fixedly installed inside the through grooves on the front and rear sides of the limit block, and the top end of the piston rod of the fourth hydraulic cylinder is fixedly installed at the bottom of the winding assembly platform.

[0012] Preferably, sensors with data sensing are fixedly installed inside the left and right through grooves of the limit block by bolts, and detection cylinders are slidably arranged inside the left and right through grooves of the limit block; a limit slider is fixedly installed on the side of the detection cylinder by bolts; and a photo sensor is fixedly installed on the side of the detection cylinder by bolts.

[0013] Preferably, the multi-angle control system includes a fixed component fixedly installed on a fixed column by bolts and rotatably installed on the top of the fixed column; the fixed component includes a rotating component rotatably installed on the top of the fixed column; a fifth hydraulic cylinder is fixedly installed on the bottom side of the top plate of the rotating component by bolts; the top end of the piston rod of the fifth hydraulic cylinder is rotatably installed on the bottom end of the connecting rod arm; the top end of the connecting arm is rotatably installed on the side of the slider; the slider is slidably installed on the top of the slide rail; a fixed block is fixedly installed on the top of the slider by bolts.

[0014] Preferably, the rotating assembly is specifically composed of a servo motor fixedly arranged on the inner top side of the fixed column and a mounting housing; a rotation sensor with data sensing function is arranged inside the mounting housing.

[0015] The present invention has the following advantages: The present invention provides an auxiliary system for welding steel trusses of cable-stayed bridges through improvement, which has the following improvements compared with similar equipment:

[0016] The present invention discloses an auxiliary welding system for assembling steel trusses of cable-stayed bridges. The system arranges a positioning structure on the top of a welding mounting seat, and slowly pushes a stop block through a second hydraulic cylinder to adjust and squeeze the horizontal position of a limit ring, and determines the hoisting height of the steel trusses by judging the internal pressure of the first hydraulic cylinder. The hoisting assembly is arranged above the positioning structure, and the intersection height is obtained by changing the hoisting rope on the bottom side of the winding assembly through the limit assembly so as to control the hoisting stability of the steel trusses and accurately obtain the hoisting displacement beam, and the adjustment structure is used to coordinate the positioning structure to determine the fixed point accuracy of the steel trusses. The direction of the fixing block is controlled by arranging a fixing assembly to facilitate adaptation to different materials, improve the stability of the steel material, facilitate welding, and reduce the welding internal stress caused by the self-weight deflection of the upper bridge deck block and the shaking of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the axial side structure of the positioning structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the axial side structure of the hoisting assembly of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the regulating structure of the present invention;

[0021] Figure 5 is a schematic cross-sectional structural diagram of a position limiting assembly of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the fixing assembly of the present invention.

[0023] Among them: welding mounting seat-1, hydraulic adjustment component-2, first adjustable column-3, positioning structure-4, lifting component-5, fixed column-6, fixed component-7, second adjustable column-41, first hydraulic cylinder-42, lower pressure plate-43, conical positioning block-44, second hydraulic cylinder-45, blocking block-46, adjustment structure-51, winding component-52, limit component-53, horizontal sensor-54, limit ring-511, ball-512, third hydraulic cylinder-513, hydraulic disc-514, limit block-531, fourth hydraulic cylinder-532, detection cylinder-533, limit slider-534, photosensitive element-535, rotating component-71, fifth hydraulic cylinder-72, connecting rod arm-73, slider-74, slide rail-75, fixed block-76. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 to Figure 6 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0027] Embodiment 1:

[0028] See also Figure 1 to Figure 6The present invention discloses an auxiliary system for assembling and welding steel trusses of cable-stayed bridges, comprising a welding system, a multi-angle control system, a positioning system, a hoisting system, a communication control system and an energy supply system; the welding system is used for control parts for fixed-point welding of steel trusses of cable-stayed bridges; the multi-angle control system is used for high-precision adjustment parts for adjusting the spatial position and assembly position of steel trusses; the positioning system is used for control parts for adjusting the relative position of steel trusses during assembly; the communication control system is responsible for transmitting processed data to a control terminal through wireless or wired communication; the energy supply system is used for providing the welding system, the multi-angle control system, the positioning system, the hoisting system and the communication control system with the power and hydraulic pressure required by the system, including a cable line power supply system and a voltage-stabilizing hydraulic supply system.

[0029] The welding system includes a welding mounting seat 1; a slide groove is arranged on the top rear side of the welding mounting seat 1, and a hydraulic adjustment component 2 is slidably arranged inside the slide groove; a first adjustable column 3 with height adjustment function is fixedly installed on the top of the hydraulic adjustment component 2 by bolts.

[0030] The positioning system includes a positioning structure 4 fixedly installed on the middle side of the top of the welding mounting base 1 by bolts; the positioning structure 4 includes a second adjustable column 41 fixedly installed on the middle side of the top of the welding mounting base 1 by bolts; a groove is provided on the top of the second adjustable column 41, and a first hydraulic cylinder 42 with height adjustment function is fixedly installed inside the groove; a lower pressure plate 43 is fixedly installed on the top of the piston rod of the first hydraulic cylinder 42 by bolts; a conical positioning block 44 is fixedly installed on the middle side of the top of the lower pressure plate 43 by bolts; a second hydraulic cylinder 45 is fixedly installed on the inner cavity of the conical positioning block 44 by bolts; a blocking block 46 is fixedly installed on the front end of the piston rod of the second hydraulic cylinder 45 by bolts.

[0031] The second hydraulic cylinder 45 inside the conical positioning block 44 is distributed in a ring shape with an angle of 30 degrees, and the second hydraulic cylinder 45 is connected to the hydraulic source of the energy supply system through a connecting pipe.

[0032] The lifting system includes a lifting component 5 arranged on the top of the positioning structure 4; the lifting component 5 includes an adjusting structure 51 slidably arranged on the top of the positioning structure 4; the adjusting structure 51 is fixedly installed on the bottom side of the winding component 52 by bolts; a limiting component 53 is fixedly installed on the bottom of the winding component 52 platform by bolts, and the lifting rope of the winding component 52 passes through the internal through hole of the limiting component 53; a horizontal sensor 54 with data sensing function is fixedly installed on the top of the winding component 52 by bolts.

[0033] The adjustment structure 51 includes a limit ring 511 slidably arranged on the top of the positioning structure 4; a ball 512 is rollingly arranged at the bottom of the limit ring 511; the side of the limit ring 511 is fixedly installed on the end of the piston rod of the third hydraulic cylinder 513 by bolts; the side of the cylinder body of the third hydraulic cylinder 513 is plugged and fixed with the rotating shaft of the hydraulic disc 514, and the hydraulic disc 514 is fixedly installed on the bottom of the platform of the winding assembly 52 by bolts.

[0034] The limit assembly 53 includes a limit block 531 arranged below the platform of the winding assembly 52; four groups of through grooves are arranged inside the limit block 531, and a fourth hydraulic cylinder 532 is fixedly installed inside the front and rear through grooves of the limit block 531, and the top end of the piston rod of the fourth hydraulic cylinder 532 is fixedly installed at the bottom of the platform of the winding assembly 52; sensors with data sensing are fixedly installed inside the left and right through grooves of the limit block 531 by bolts, and a detection cylinder 533 is slidably arranged inside the left and right through grooves of the limit block 531, and the lifting rope on the bottom side of the winding assembly 52 passes through the internal through hole of the detection cylinder 533; a limit slider 534 is fixedly installed on the side of the detection cylinder 533 by bolts; a photo sensor 535 is fixedly installed on the side of the detection cylinder 533 by bolts.

[0035] Embodiment 2:

[0036] See also Figure 1 to Figure 6 , an assembly welding auxiliary system for steel trusses of cable-stayed bridges of the present invention, compared with the first embodiment, this embodiment also includes: a multi-angle control system includes a fixed component 7 fixedly installed on a fixed column 6 by bolts and rotatably arranged on the top of the fixed column 6; the fixed component 7 includes a rotating component 71 rotatably installed on the top of the fixed column 6; a fifth hydraulic cylinder 72 is fixedly installed on the bottom side of the top plate of the rotating component 71 by bolts; the top end of the piston rod of the fifth hydraulic cylinder 72 is rotatably arranged on the bottom end of a connecting rod arm 73; the top end of the connecting rod arm 73 is rotatably installed on the side of a slider 74; the slider 74 is slidably arranged on the top of a slide rail 75; a fixed block 76 is fixedly installed on the top of the slider 74 by bolts.

[0037] The rotating assembly 71 is specifically composed of a servo motor fixedly arranged on the inner top side of the fixed column 6 and a mounting housing; a rotation sensor with data sensing function is arranged inside the mounting housing.

[0038] Based on the above, the working principle of the assembly welding auxiliary system for cable-stayed bridge steel truss is:

[0039] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0040] Second, the staff first lifts the upper and lower chord components through the winding assembly 52. ​​Since the multiple sets of winding machines of the winding assembly 52 are set, the steel truss is lifted at an angle. Here, the fourth hydraulic cylinder 532 is controlled by the external control terminal to adjust the distance between the limit block 531 and the winding assembly 52 platform, so that the limit block 531 changes the bottom side of the winding assembly 52 The lifting rope obtains the intersection height, and then the lifting assembly 5 is lifted to the top of the positioning structure 4 and the fixed assembly 7 through the external lifting equipment, and gradually adjusts the adjustment structure 51 to approach the positioning structure 4. At this time, the limit ring 511 moves downward and is inserted into the conical positioning block 44. At this time, the second hydraulic cylinder 45 is slowly pushed The blocking block 46 adjusts and squeezes the horizontal position of the limit ring 511, and applies downward pressure to the lower pressure plate 43 and the first hydraulic cylinder 42 through the weight of the winding assembly 52. ​​When the internal pressure of the first hydraulic cylinder 42 rises to a certain value, the external lifting equipment stops driving the lifting assembly 5 to descend. At this time, the pressure of the upper and lower chambers inside the hydraulic plate 514 is detected to determine whether the adjustment structure 51 and the winding assembly 52 are kept in a horizontal state and adjusted through the external lifting equipment. Then, with the cooperation of the third hydraulic cylinder 513, the winding assembly 52, the limit assembly 53 and the steel truss can be kept in a horizontal state and moved to the top of the fixed assembly 7 under the adjustment action of the external lifting equipment;

[0041] Third, the winding assembly 52 then drives the steel truss to move downward and approach the fixed assembly 7. Here, the lifting rope on the bottom side of the winding assembly 52 synchronously drives the detection cylinder 533 to slide inside the limit block 531. Here, the light sensor 535 on the side of the detection cylinder 533 is controlled to perform light sensing with the sensor set inside the limit block 531. The high precision of light sensing can be used to obtain the displacement of the steel truss driven up and down by the winding assembly 52. ​​Then, the overall direction of the fixed block 76 is adjusted by controlling the rotating assembly 71. Subsequently, the fifth hydraulic cylinder 72 pushes the connecting rod arm 73 to perform linkage and push the slider 74 and the fixed block 76 to slide on the slide rail 75 to provide a clamping and fixing action for the steel truss.

[0042] The present invention provides an assembly welding auxiliary system for steel trusses of cable-stayed bridges through improvements. By arranging a positioning structure 4 on the top of a welding mounting seat 1, a second hydraulic cylinder 45 slowly pushes a blocking block 46 to adjust and squeeze the horizontal position of a limiting ring 511, and the lifting height of the steel truss is determined by judging the internal pressure of the first hydraulic cylinder 42. By arranging a lifting assembly 5 above the positioning structure 4, a lifting rope on the bottom side of a winding assembly 52 is changed by a limiting assembly 53 to obtain an intersection height so as to control the lifting stability of the steel truss and accurately obtain a lifting displacement beam, and the adjustment structure 51 is coordinated with the positioning structure 4 to determine the fixed point accuracy of the steel truss; by arranging a fixing assembly 7 to control the direction of a fixing block 76, it is convenient to adapt to different materials, improve the stability of the steel material, facilitate welding, and reduce the welding internal stress caused by the self-weight deflection of the upper bridge deck block and the shaking of parts.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary system for welding steel trusses of cable-stayed bridges, characterized in that: It includes a welding system, a multi-angle control system, a positioning system, a hoisting system, a communication control system and an energy supply system; the welding system is used for control parts for fixed-point welding of steel trusses of cable-stayed bridges; the multi-angle control system is used for high-precision adjustment parts for adjusting the spatial position and assembly position of steel trusses; the positioning system is used for control parts for adjusting the relative position of steel trusses during assembly; the communication control system is responsible for transmitting processed data to the control terminal through wireless or wired communication; the energy supply system is used to provide the welding system, the multi-angle control system, the positioning system, the hoisting system and the communication control system with the power and hydraulic pressure required by the system, including a cable line power supply system and a voltage-stabilizing hydraulic supply system; The welding system comprises a welding mounting seat (1); a slide groove is arranged at the rear side of the top of the welding mounting seat (1), and a hydraulic adjustment component (2) is slidably arranged inside the slide groove; a first adjustable column (3) having a height adjustment function is fixedly installed on the top of the hydraulic adjustment component (2) by bolts; the positioning system comprises a positioning structure (4) fixedly installed on the middle side of the top of the welding mounting seat (1) by bolts; the positioning structure (4) comprises a second adjustable column (41) fixedly installed on the middle side of the top of the welding mounting seat (1) by bolts; a groove is arranged at the top of the second adjustable column (41), and a first hydraulic cylinder (42) having a height adjustment function is fixedly installed inside the groove; a lower pressure plate (43) is fixedly installed on the top of the piston rod of the first hydraulic cylinder (42) by bolts; a conical positioning block (44) is fixedly installed on the middle side of the top of the lower pressure plate (43) by bolts; a second hydraulic cylinder (45) is fixedly installed in the inner cavity of the conical positioning block (44) by bolts; a blocking block (46) is fixedly installed on the front end of the piston rod of the second hydraulic cylinder (45) by bolts; The hoisting system comprises a hoisting assembly (5) arranged on the top of the positioning structure (4); the hoisting assembly (5) comprises an adjustment structure (51) slidably arranged on the top of the positioning structure (4); the adjustment structure (51) is fixedly mounted on the bottom side of the winding assembly (52) by means of bolts; a limit assembly (53) is fixedly mounted on the bottom of the platform of the winding assembly (52) by means of bolts, and a hoisting rope of the winding assembly (52) passes through an internal through hole of the limit assembly (53); a level sensor (54) having a data sensing function is fixedly mounted on the top of the winding assembly (52) by means of bolts; The multi-angle control system comprises a fixed component (7) fixedly mounted on a fixed column (6) by bolts and rotatably mounted on the top of the fixed column (6); the fixed component (7) comprises a rotating component (71) rotatably mounted on the top of the fixed column (6); a fifth hydraulic cylinder (72) is fixedly mounted on the bottom side of a top plate of the rotating component (71) by bolts; the top end of a piston rod of the fifth hydraulic cylinder (72) is rotatably mounted on the bottom end of a connecting rod arm (73); the top end of the connecting rod arm (73) is rotatably mounted on the side of a slider (74); the slider (74) is slidably mounted on the top of a slide rail (75); and a fixed block (76) is fixedly mounted on the top of the slider (74) by bolts.

2. The assembly welding auxiliary system for cable-stayed bridge steel trusses according to claim 1, characterized in that: The second hydraulic cylinder (45) inside the conical positioning block (44) is distributed in a ring shape with an angle of 30 degrees, and the second hydraulic cylinder (45) is connected to the hydraulic source of the energy supply system through a connecting pipe.

3. The assembly welding auxiliary system for steel trusses of cable-stayed bridges according to claim 2 is characterized in that: The adjustment structure (51) comprises a limit ring (511) slidably arranged on the top of the positioning structure (4); a ball (512) is rollably arranged on the bottom of the limit ring (511); the side of the limit ring (511) is fixedly mounted on the end of the piston rod of the third hydraulic cylinder (513) by bolts; the side of the cylinder body of the third hydraulic cylinder (513) is plugged and fixed to the rotating shaft of the hydraulic plate (514), and the hydraulic plate (514) is fixedly mounted on the bottom of the platform of the winding assembly (52) by bolts.

4. The assembly welding auxiliary system for cable-stayed bridge steel trusses according to claim 3 is characterized in that: The limiting assembly (53) comprises a limiting block (531) arranged below the platform of the winding assembly (52); four groups of through slots are arranged inside the limiting block (531), and a fourth hydraulic cylinder (532) is fixedly installed inside the through slots on the front and rear sides of the limiting block (531); the top end of the piston rod of the fourth hydraulic cylinder (532) is fixedly installed at the bottom of the platform of the winding assembly (52).

5. The assembly welding auxiliary system for cable-stayed bridge steel trusses according to claim 4, characterized in that: Sensors with data sensing are fixedly installed in the through slots on the left and right sides of the limit block (531) by means of bolts, and detection cylinders (533) are slidably arranged in the through slots on the left and right sides of the limit block (531); a limit slider (534) is fixedly installed on the side of the detection cylinder (533) by means of bolts; and a light sensor (535) is fixedly installed on the side of the detection cylinder (533) by means of bolts.

6. The assembly welding auxiliary system for cable-stayed bridge steel trusses according to claim 5, characterized in that: The rotating assembly (71) specifically consists of a servo motor fixedly arranged on the top side of the fixed column (6) and a mounting housing; a rotation sensor with data sensing function is arranged inside the mounting housing.

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