Auxiliary positioning structure for steel structure construction welding

Abstract

The present invention relates to the technical field of welding auxiliary positioning, and discloses an auxiliary positioning structure for welding in steel structure construction, including a mounting body that can be mounted on an arc-shaped rod body, the outer walls on both sides of the mounting body are fixedly mounted with mounting shells, and the top of the mounting body is mounted with a straight rod body through a mounting portion; it also includes a locking assembly that can clamp and lock the mounting shell to the outer wall of the arc-shaped rod body, and the tangent at the intersection of the arc-shaped rod body axis and the clamping plane is perpendicular to the clamping plane. The present invention rotates the mounting shell so that the mounting shell rotates with the x-axis as the central axis, and rotates the mounting portion with the z-axis as the central axis through the rotating assembly, thereby completing the adjustment of multiple angles. When the straight rod body in the mounting portion coincides with the position to be welded of the arc-shaped rod body, welding can be performed to achieve the purpose of determining the welding angle and position of the arc-shaped rod body. Not only can the angle be adjusted flexibly, but the labor cost of welding workers is also reduced, and work efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding auxiliary positioning, in particular to an auxiliary positioning structure for welding in steel structure construction. Background Art

[0002] During the construction of existing steel structures, auxiliary tools such as measuring tools, rulers, and angle rulers are often used to help welders determine the position and angle of welded parts. These types of auxiliary tools often have errors when determining the welding angle and position. For example, the viewing angle and force during measurement will have an impact, and when reading the measurement results, errors may occur due to parallax and other reasons. Therefore, it is particularly important to design an auxiliary positioning structure for steel structure construction welding.

[0003] As disclosed in Chinese patent publication No. CN118492826A, the invention relates to the field of welding positioning technology, and specifically to a welding positioning device for a building steel structure, comprising a first positioning assembly and a second positioning assembly, wherein the first positioning assembly comprises a first clamping portion and a first rotating portion, the first clamping portion being used to clamp an arc-shaped rod body, the first rotating portion comprising a first arc-shaped plate and a first arc-shaped track which are perpendicular to each other, and the first clamping portion being able to slide along the first arc-shaped track; the second positioning assembly comprises a second clamping portion and a second rotating portion, the second clamping portion being used to clamp a straight rod body, the second rotating portion comprising a second arc-shaped plate and a second arc-shaped track which are perpendicular to each other, and the second clamping portion being able to slide along the second arc-shaped track, the second arc-shaped plate slidingly cooperates with the first arc-shaped plate to adjust the angle between the first positioning assembly and the second positioning assembly. The welding positioning device for a building steel structure has good versatility and is easy to operate, thereby improving the welding positioning efficiency.

[0004] However, the welding positioning device can only locate the welding point and determine the welding angle of the straight plate, but cannot determine the welding angle and position of the arc rod. For example, the arc rod is often combined with the straight rod on the bridge. Therefore, this case focuses on solving the problem of determining the welding angle and position of the arc tube. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary positioning structure for welding in steel structure construction to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: an auxiliary positioning structure for welding in steel structure construction, comprising a mounting body that can be mounted on an arc-shaped rod body, mounting shells are fixedly mounted on both sides of the outer wall of the mounting body, and a straight rod body is mounted on the top of the mounting body through a mounting portion;

[0007] It also includes a locking assembly that can clamp and lock the mounting housing to the outer wall of the arc-shaped rod, and the tangent line at the intersection of the arc-shaped rod axis and the clamping plane is perpendicular to the clamping plane;

[0008] It also includes a rotating assembly that can rotate the mounting portion along the outer wall of the mounting body, and the rotating plane is vertically arranged to the clamping plane, and the center of the rotating circle coincides with the intersection of the clamping plane and the arc-shaped rod axis.

[0009] Preferably, the locking assembly comprises two sliding shells respectively fixedly mounted at the centers of the arc-shaped inner walls of the two mounting shells, the inner walls of the two sliding shells are slidably mounted with sliding bodies, the outer walls of the two sliding bodies are rotatably mounted with rotating rods through connecting rods, the outer walls of the two rotating rods on one side away from the connecting rods are rotatably mounted with locking wheels, and a locking structure is provided on the locking wheels, two fixed shafts are fixedly mounted between the square inner walls of the two mounting shells, and the two fixed shafts respectively penetrate the two rotating rods and are rotatably connected to the penetration points;

[0010] Also included is a reciprocating assembly that can move the two sliding bodies closer to or farther away from each other.

[0011] Preferably, the reciprocating assembly comprises a sliding window opened on the square inner wall of the mounting shell, and a moving plate is slidably installed on the inner walls of the two mounting shells, and the bottom of the moving plate is fixedly connected to the sliding body, and the outer wall of the moving plate is extended with an ear plate, and the ear plate extends from the sliding window, and the outer wall of the ear plate is provided with a threaded hole set through;

[0012] The reciprocating assembly also includes a screw rod which is rotatably installed in the installation body, and two ends of the screw rod are respectively inserted into the threaded holes on the ear plates on both sides and meshed with the threads thereof.

[0013] Preferably, the rotating assembly includes a rotating body slidably mounted on the top of the outer wall of the mounting body, the inner wall of the rotating body is provided with an annular rack, the inner wall of the mounting body is rotatably mounted with a gear, and the gear is meshed with the annular rack, and the gear is driven by a motor fixed to the outer wall of the mounting body.

[0014] Preferably, the mounting portion comprises a fixing notch fixedly connected to the top of the rotating body, and a plurality of fixing bolts which can approach each other are rotatably mounted on the outer wall of the fixing notch.

[0015] Preferably, an arc-shaped groove is formed on the top of the mounting body, and a protrusion which can slide back and forth in the arc-shaped groove is fixedly connected to the bottom of the rotating body.

[0016] Preferably, the outer wall of the mounting body is provided with scale lines, the outer wall of the rotating body is fixedly connected with a pointer, and the pointer points to the 0 scale line in an initial state.

[0017] Preferably, a reflective photoelectric sensor is fixedly connected to the outer wall of the sliding body close to the locking wheel.

[0018] Preferably, a photoelectric angle sensor is fixedly connected to the outer wall of the rotating rod.

[0019] Preferably, a tilt sensor is fixedly connected to the top of the mounting housing.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention completes adjustment of various angles by rotating the mounting shell to make the mounting shell rotate around the x-axis as the center axis, and by rotating the assembly to make the mounting portion rotate around the z-axis as the center axis (i.e., rotate along the semicircular outer wall of the mounting body). When the straight rod body in the mounting portion coincides with the position to be welded of the arc-shaped rod body, welding can be performed to achieve the purpose of determining the welding angle and position of the arc-shaped rod body. Not only can the angle be flexibly adjusted to ensure the accuracy and consistency of the welding process, but the labor cost of welders is also reduced. By using this auxiliary structure, welders can complete complex welding tasks more easily, improve work efficiency, reduce welding defects, and thus significantly improve welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a right side view of the present invention;

[0024] Figure 3 It is a right side cross-sectional view of the present invention;

[0025] Figure 4 It is a schematic diagram of the clamping wheel of the present invention when it is opened;

[0026] Figure 5 It is a front view of the present invention;

[0027] Figure 6 A sectional view of the main view of the present invention;

[0028] Figure 7 is a three-dimensional cross-sectional view of the present invention;

[0029] Figure 8 It is a schematic diagram of the spatial rectangular coordinate system in the present invention;

[0030] Fig. 9 It is a second welding schematic diagram of the straight rod body and the arc-shaped rod body in the present invention;

[0031] Fig.10 This is a third welding schematic diagram of a straight rod body and an arc-shaped rod body in the present invention;

[0032] Fig.11 It is a schematic diagram of position detection in the present invention.

[0033] In the figure: 1. arc-shaped rod body; 2. straight rod body; 3. mounting shell; 4. mounting body; 5. rotating body; 6. fixing notch; 7. fixing bolt; 8. sliding shell; 9. sliding body; 10. moving plate; 11. screw; 12. threaded hole; 13. scale line; 14. pointer; 15. reflective photoelectric sensor; 16. rotating rod; 17. fixed shaft; 18. locking wheel; 19. gear; 20. ring rack; 21. inclination sensor; 22. connecting rod; 23. photoelectric angle sensor; 24. sliding window. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figures 1 to 11 The present invention provides a technical solution: an auxiliary positioning structure for welding in steel structure construction, comprising a mounting body 4 that can be mounted on an arc-shaped rod body 1, a mounting shell 3 is fixedly mounted on both sides of the outer wall of the mounting body 4, and a straight rod body 2 is mounted on the top of the mounting body 4 through a mounting portion;

[0036] It also includes a locking assembly that can clamp and lock the mounting housing 3 to the outer wall of the arc-shaped rod body 1, and the tangent line at the intersection of the axis of the arc-shaped rod body 1 and the clamping plane is perpendicular to the clamping plane;

[0037] It also includes a rotating assembly that enables the mounting portion to rotate along the outer wall of the mounting body 4, and the rotating plane is vertically arranged to the clamping plane, and the center of the rotating circle coincides with the intersection of the clamping plane and the axis of the arc-shaped rod body 1.

[0038] When the device is in use, the device is first placed on the part of the arc-shaped rod body 1 to be welded through the opening below the mounting shell 3, so that the center of the clamping assembly coincides with the center of the plane where the part to be welded is located, the clamping plane is adjusted to be perpendicular to the tangent of the axis of the part to be welded, and the arc-shaped rod body 1 is clamped and locked by the locking assembly. At this time, the plane where the clamping assembly is located will always remain perpendicular to the tangent of the axis of the part to be welded of the arc-shaped rod body 1, and the center of the mounting shell 3 will always coincide with the center of the plane where the part to be welded is located, so as to complete the clamping and locking of the arc-shaped rod body 1, thereby preparing for welding at various angles.

[0039] Establish a spatial rectangular coordinate system with the coincidence point of the two centers as the origin, see Figure 8, the tangent of the part to be welded is the X-axis, the perpendicular line to the tangent of the part to be welded in the clamping plane is the Y-axis, and the straight line perpendicular to the plane formed by the xy axes and passing through the origin is the z-axis.

[0040] When the clamping work is completed, the mounting shell 3 is rotated to make the mounting shell 3 rotate around the x-axis as the center axis, and the mounting part is rotated around the z-axis as the center axis (i.e., rotated along the semicircular outer wall of the mounting body 4) by rotating the assembly, thereby completing the adjustment of various angles. When the straight rod body 2 in the mounting part coincides with the welding position of the arc-shaped rod body 1, welding can be carried out to achieve the purpose of determining the welding angle and position of the arc-shaped rod body 1. Not only can the angle be flexibly adjusted to ensure the accuracy and consistency of the welding process, but the labor cost of welders is also reduced. By using this auxiliary structure, welders can complete complex welding tasks more easily, improve work efficiency, reduce welding defects, and thus significantly improve welding quality.

[0041] In this way, by rotating the assembly, the mounting portion and the straight rod body 2 are rotated and adjusted with the z-axis as the center axis to complete the angle adjustment within a plane, and then the mounting shell 3 is rotated and adjusted with the x-axis as the center axis to complete the angle adjustment in space, thereby increasing the range of angle adjustment and providing auxiliary positioning within the space range for the subsequent welding of the straight rod body 2 and the arc-shaped rod body 1.

[0042] Further, the locking assembly includes two sliding shells 8 respectively fixedly installed at the center of the arc-shaped inner walls of the two mounting shells 3, the inner walls of the two sliding shells 8 are slidably installed with sliding bodies 9, the outer walls of the two sliding bodies 9 are rotatably installed with rotating rods 16 through connecting rods 22, the outer walls of the two rotating rods 16 away from the connecting rod 22 are rotatably installed with locking wheels 18, and the locking wheels 18 are provided with locking structures, and two fixed shafts 17 are fixedly installed between the square inner walls of the two mounting shells 3, and the two fixed shafts 17 respectively penetrate the two rotating rods 16 and are rotatably connected to the penetration points;

[0043] It also includes a reciprocating assembly that can move the two sliding bodies 9 closer to or farther away from each other.

[0044] See also Figure 3When the arc-shaped rod body 1 needs to be clamped, the two sliding bodies 9 are driven away from each other by the reciprocating assembly. In the process of the sliding bodies 9 moving away from each other, the connecting rod 22 on the same side will be driven to approach each other, thereby driving the rotating rod 16 to rotate about the axis of the fixed shaft 17, and then the two locking wheels 18 on the same side are made to approach each other and gradually fit with the arc-shaped rod body 1. When the four locking wheels 18 clamp the arc-shaped rod body 1, the purpose of clamping the arc-shaped rod body 1 is completed. The locking wheel 18 is locked by the external locking structure so that the locking wheel 18 cannot rotate by itself, thereby preventing the device from rotating in an unautonomous situation. The external locking structure can refer to the brake system of the universal wheel. When the locking wheel 18 is locked, the angle is locked.

[0045] When it is necessary to adjust the straight rod body 2 to rotate along the x-axis, the locking wheel 18 is unlocked through the locking structure, and the mounting shell 3 is rotated. Since the locking wheel 18 is always tightly clamped with the arc-shaped rod body 1, the locking wheel 18 will roll along the outer wall of the mounting shell 3 while the mounting shell 3 is rotating, and will always be located in the plane formed by the yz axis while rolling, that is, only the rotation with the x-axis as the axis is completed.

[0046] When welding is completed, the two sliding bodies 9 are driven away from each other by the reciprocating assembly, so that the four locking wheels 18 are moved away from each other to complete the unlocking of the arc-shaped rod body 1, and then the device is taken out from the arc-shaped rod body 1, thus completing the entire welding process.

[0047] It is worth noting that by limiting the travel of the sliding bodies 9, when they move away from each other, the connecting rod 22 will not rotate beyond the vertical state.

[0048] Furthermore, the reciprocating assembly includes a sliding window 24 opened on the square inner wall of the mounting shell 3, and the inner walls of the two mounting shells 3 are both slidably mounted with a moving plate 10, the bottom of the moving plate 10 is fixedly connected to the sliding body 9, and the outer wall of the moving plate 10 is extended with an ear plate, and the ear plate extends from the sliding window 24, and the outer wall of the ear plate is provided with a threaded hole 12 set through;

[0049] The reciprocating assembly further comprises a screw rod 11 which is rotatably installed in the mounting body 4 , and two ends of the screw rod 11 are respectively inserted into threaded holes 12 on the two side ear plates and are threadedly engaged therewith.

[0050] See also Figure 1 as well as Figure 3A handle is fixedly installed on the outer wall of the screw 11, and the two sections of thread on the screw 11 are designed in reverse, so that when the screw 11 rotates, the two movable plates 10 can be brought closer to each other. When it is necessary to adjust the locking wheel 18 to clamp the arc-shaped rod body 1, the operator holds the two handles with both hands and rotates them, so that the two movable plates 10 are brought closer to each other, and then the sliding body 9 fixed on the movable plate 10 is brought closer to each other, so as to achieve the above-mentioned purpose of driving the locking wheel 18 to clamp the arc-shaped rod body 1.

[0051] When welding is completed, the two handles are rotated in opposite directions so that the two movable plates 10 move away from each other, and then the movable plates 10 drive the sliding bodies 9 to move away from each other. The sliding bodies 9 move away from each other so that the four locking wheels 18 are disengaged from the arc-shaped rod body 1 to complete the unlocking of the arc-shaped rod body 1.

[0052] Furthermore, the rotating assembly includes a rotating body 5 slidably mounted on the top of the outer wall of the mounting body 4, the inner wall of the rotating body 5 is provided with an annular rack 20, the inner wall of the mounting body 4 is rotatably mounted with a gear 19, and the gear 19 is meshed with the annular rack 20, and the gear 19 is driven by a motor fixed on the outer wall of the mounting body 4.

[0053] See also Figure 2 as well as Figure 6 When the straight rod body 2 needs to rotate with the z-axis as the axis, the motor drives the mounting body 4 to rotate. With the cooperation of the gear 19 and the annular rack 20, the rotating body 5 will slide along the top of the mounting body 4, thereby driving the straight rod body 2 to rotate. While rotating, it will always be located in the plane formed by the xy axis, that is, only the purpose of rotating with the z-axis as the axis is achieved.

[0054] When aligning the position to be welded, first drive the entire device to rotate along the x-axis by rotating the mounting shell 3, and then rotate the handle on the outer wall of the screw 11 to rotate the straight rod body 2 along the z-axis, so that the straight rod body 2 can coincide with the position to be welded on the arc-shaped rod body 1. When the straight rod body 2 coincides with the position to be welded, subsequent welding work is carried out, thereby achieving the purpose of accurately docking the straight rod body 2 with the arc-shaped rod body 1. Welding workers can complete welding tasks more easily, improve work efficiency, reduce welding defects, and thus significantly improve welding quality.

[0055] Furthermore, the mounting portion includes a fixing notch 6 fixedly connected to the top of the rotating body 5, and a plurality of fixing bolts 7 that can approach each other are rotatably mounted on the outer wall of the fixing notch 6.

[0056] See also Figure 3The mounting portion includes a fixing notch 6 fixedly connected to the top of the rotating body 5, and a plurality of fixing bolts 7 that can be rotatably mounted on the outer wall of the fixing notch 6 are close to each other. When using the present device, the fixing notch 6 can be aligned with the to-be-welded portion of the arc-shaped rod body 1 through the above-mentioned adjustment method, and then the straight rod body 2 can be inserted into the fixing notch 6 and fixed through the fixing bolts 7. Alternatively, the straight rod body 2 can be first inserted into the fixing notch 6 and fixed through the fixing bolts 7, and then the straight rod body 2 can be aligned with the to-be-welded portion on the arc-shaped rod body 1 through the above-mentioned adjustment method for welding. The latter description is adopted in this case.

[0057] Furthermore, an arc-shaped groove is formed on the top of the mounting body 4, and a protrusion which can slide back and forth in the arc-shaped groove is fixedly connected to the bottom of the rotating body 5.

[0058] See also Figure 1 An arc groove is opened on the top of the mounting body 4, and the protrusion at the bottom of the rotating body 5 can slide in the arc groove, thereby achieving the purpose of making the rotating body 5 slide on the top of the mounting body 4. This method can ensure that when the rotating body 5 drives the straight rod body 2 to rotate, the ray of the axis of the straight rod body 2 will always pass through the origin, so as to ensure that the z-axis is always the axis during the rotation of the straight rod body 2.

[0059] Furthermore, a scale line 13 is provided on the outer wall of the mounting body 4 , a pointer 14 is fixedly connected to the outer wall of the rotating body 5 , and the pointer 14 points to the 0 scale of the scale line 13 in an initial state.

[0060] See also Figure 5 In the initial state, the pointer 14 points to the 0 scale line of the scale line 13. When the rotating body 5 slides along the top of the mounting body 4, the position of the pointer 14 pointing to the scale line 13 will change. As the rotating body 5 rotates along the z-axis, the pointer 14 will rotate simultaneously on the scale line 13, so that it can point to the angle that has been rotated. When adjusting the angle, the operator can use the degree of the pointer 14 pointing to the scale line 13 as a standard to judge the angle of rotation of the straight rod body 2 around the z-axis.

[0061] Furthermore, a reflective photoelectric sensor 15 is fixedly connected to the outer wall of the sliding body 9 close to the locking wheel 18 .

[0062] See also Figure 4When the locking wheel 18 clamps the arc-shaped rod 1, the reflective photoelectric sensor 15 will emit a beam of light, usually infrared light or visible light. When the light hits the surface of an object, part of the light will be absorbed by the object, and the other part of the light will be reflected back. The receiver in the sensor will receive the reflected light, and the receiver will convert the received light into an electrical signal, and analyze and process it through a signal processing circuit to perform detection. If the emitted light coincides with the received light, the positioning is completed. If the emitted light does not coincide with the received light, it means that there is a deviation in the locking of the arc-shaped rod 1, and the arc-shaped rod 1 needs to be unlocked and re-locked. If the emitted rays and the received rays do not coincide after multiple measurements, the device needs to be inspected to prevent parts wear.

[0063] Furthermore, a photoelectric angle sensor 23 is fixedly connected to the outer wall of the rotating rod 16 .

[0064] See also Figure 3 The light emitting element (usually LED) in the photoelectric angle sensor 23 emits a beam of light, which passes through a grating disk engraved with regular light-transmitting and opaque lines, and the grating disk rotates coaxially with the object to be measured. When the light passes through the grating disk, the photosensitive element (such as a photodiode) detects the light that is transmitted or blocked, and generates corresponding electrical signals. These electrical signals are processed and converted into digital signals, so as to calculate the rotation angle of the object. When the device is rotated through the mounting shell 3, the locking wheel 18 will roll along the surface of the arc-shaped rod body 1. The rotation angle of the locking wheel 18 is the rotation angle of the mounting shell 3, that is, the rotation angle of the straight rod body 2 around the x-axis. The photoelectric angle sensor 23 detects the rotation angle of the locking wheel 18, so that the rotation angle of the straight rod body 2 can be obtained. The operator can monitor the rotation angle in real time when rotating the mounting shell 3, which can not only flexibly adjust the angle to ensure the accuracy and consistency of the welding process, but also reduce the labor cost of the welding workers.

[0065] Furthermore, a tilt sensor 21 is fixedly connected to the top of the mounting housing 3 .

[0066] The tilt sensor 21 is preferably a MEMS tilt sensor, which is based on micro-electromechanical system (MEMS) technology and uses a tiny accelerometer to measure the change of gravity acceleration. When the object tilts, the accelerometer will sense the change of gravity component, and the tilt angle is measured by calculating these data. Thus, the angle between the top of the mounting housing 3 and the horizontal plane is measured. When the straight rod body 2 is regularly welded on the arc rod body 1, refer to Fig.11, by comparing whether the absolute value of the difference between two adjacent angles is equal, that is, whether the absolute value of ab is equal to the absolute value of bc, it can be judged whether the straight rod body 2 to be welded is regular. If the difference is not equal, the angle needs to be readjusted, or the locking wheel 18 deviates from the centering position during clamping due to wear, in which case the locking wheel 18 needs to be replaced.

[0067] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning structure for welding in steel structure construction, comprising a mounting body that can be mounted on an arc-shaped rod body, characterized in that: The outer walls on both sides of the installation body are fixedly mounted with installation shells, and the top of the installation body is mounted with a straight rod body through a mounting portion; It also includes a locking assembly that can clamp and lock the mounting housing to the outer wall of the arc-shaped rod, and the tangent line at the intersection of the arc-shaped rod axis and the clamping plane is perpendicular to the clamping plane; It also includes a rotating assembly that enables the mounting portion to rotate along the outer wall of the mounting body, wherein the rotating plane is vertically arranged to the clamping plane, and the center of the rotating circle coincides with the intersection of the clamping plane and the axis of the arc-shaped rod body; The locking assembly comprises two sliding shells respectively fixedly mounted at the centers of the arc-shaped inner walls of the two mounting shells, the inner walls of the two sliding shells are slidably mounted with sliding bodies, the outer walls of the two sliding shells are rotatably mounted with rotating rods through connecting rods, the outer walls of the two rotating rods on one side away from the connecting rods are rotatably mounted with locking wheels, and a locking structure is provided on the locking wheels, two fixed shafts are fixedly mounted between the square inner walls of the two mounting shells, and the two fixed shafts respectively penetrate the two rotating rods and are rotatably connected to the penetrations; Also included is a reciprocating assembly capable of moving the two sliding bodies closer to or farther from each other; The rotating assembly comprises a rotating body slidably mounted on the top of the outer wall of the mounting body, the inner wall of the rotating body is provided with an annular rack, the inner wall of the mounting body is rotatably mounted with a gear, and the gear is meshed with the annular rack, and the gear is driven by a motor fixed to the outer wall of the mounting body; A photoelectric angle sensor is fixedly connected to the outer wall of the rotating rod; The locking wheel rolls along the surface of the arc-shaped rod body, and the rotation angle of the locking wheel is detected by a photoelectric angle sensor, thereby obtaining the rotation angle of the straight rod body.

2. The auxiliary positioning structure for steel structure construction welding according to claim 1, characterized in that: The reciprocating assembly includes a sliding window opened in the square inner wall of the mounting shell, and a moving plate is slidably installed on the inner walls of the two mounting shells. The bottom of the moving plate is fixedly connected to the sliding body, and the outer wall of the moving plate is extended with an ear plate, and the ear plate extends from the sliding window, and the outer wall of the ear plate is provided with a threaded hole set through; The reciprocating assembly also includes a screw rod which is rotatably installed in the installation body, and two ends of the screw rod are respectively inserted into the threaded holes on the ear plates on both sides and meshed with the threads thereof.

3. The auxiliary positioning structure for steel structure construction welding according to claim 2 is characterized in that: The mounting portion comprises a fixing notch fixedly connected to the top of the rotating body, and a plurality of fixing bolts which can approach each other are rotatably mounted on the outer wall of the fixing notch.

4. The auxiliary positioning structure for steel structure construction welding according to claim 2 is characterized in that: An arc groove is formed on the top of the installation body, and a protrusion which can slide back and forth in the arc groove is fixedly connected to the bottom of the rotating body.

5. The auxiliary positioning structure for steel structure construction welding according to claim 2, characterized in that: The outer wall of the mounting body is provided with scale lines, the outer wall of the rotating body is fixedly connected with a pointer, and the pointer points to the 0 scale line in an initial state.

6. The auxiliary positioning structure for steel structure construction welding according to claim 2, characterized in that: A reflective photoelectric sensor is fixedly connected to the outer wall of the sliding body close to the locking wheel.

7. The auxiliary positioning structure for steel structure construction welding according to any one of claims 1 to 6, characterized in that: The top of the mounting shell is fixedly connected with a tilt sensor.

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