A kind of turning tire frame for welding steel box beam

Abstract

The present invention belongs to the field of welding support, and specifically discloses a turning frame for welding steel box girders, including a deflection support assembly, a rotation drive mechanism, a bidirectional adaptive locking mechanism and an adaptive tight support mechanism, wherein the deflection support assembly includes a bottom plate, a main support frame, a deflection main shaft and a deflection platform. The present invention creatively proposes a rotation drive mechanism and a bidirectional adaptive locking mechanism, and automatically realizes the angle locking of the deflection platform by the locking claw through a soft connection transmission mode of hydraulic transmission and the angle control of the locking claw by an elastic rope, thereby avoiding the problem that the deflection platform rotates and resets under the action of its own weight after the driving motor stops driving.

Description

Technical Field

[0001] The invention belongs to the technical field of welding supports, and in particular relates to a turnover cradle for welding steel box girders. Background Art

[0002] Steel box girder, also known as steel plate box girder, is a common structural form for large-span bridges. It is generally used on bridges with larger spans. It is called a steel box girder because it looks like a box. The cross-section of a general steel box girder is a hollow trapezoidal structure that is larger at the top and smaller at the bottom. It is welded from four steel plates into modules of a specific length. When in use, you only need to splice, assemble and adjust the modules.

[0003] Due to the large size of the steel box girder and the relatively fixed position of the operator, it is usually placed on a rack during welding, and the rack needs to have the functions of rotation and position retention. This is because the rack is heavy and cannot be rotated in real time during the welding process. Instead, it needs to be locked after rotating a certain angle each time, and then welding can be performed, and this cycle is repeated until the welding is completed.

[0004] For safety reasons, the position of the deflection platform cannot be maintained only by enabling the motor. This not only places higher requirements on the motor, but also poses great danger in the event of an accident such as a power outage. Therefore, after adjusting the deflection, it is generally necessary to use mechanical locking to prevent the deflection platform from resetting under the action of its own weight. However, since the deflection platform needs to rotate in two directions, the structure and operating steps of the current locking device are cumbersome, and unlocking and locking are required before and after each adjustment. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a flip tire frame for welding steel box girders with simple and convenient operation steps and high reliability. In order to pre-position and pre-support large-volume raw materials before welding, the present invention proposes an adaptive tightening support mechanism, which can limit the angle of the side steel plate on the one hand, and automatically transform the sliding sliding plate into a locked and fixed state while supporting the rotation of the diagonal rod on the other hand, without the need for additional independent operation steps; not only that, the present invention also creatively proposes a rotation drive mechanism and a two-way adaptive locking mechanism, which automatically realizes the angle locking of the deflection platform by the locking claw through the soft connection transmission mode of hydraulic transmission and the angle control of the locking claw by the elastic rope, thereby avoiding the problem of the deflection platform rotating and resetting under the action of its own weight after the drive motor stops driving.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a flip tire frame for welding steel box girders, including a deflection support assembly, a rotation drive mechanism, a bidirectional adaptive locking mechanism and an adaptive tightening support mechanism, the deflection support assembly includes a base plate, a main support frame, a deflection main shaft and a deflection platform, the main support frame is symmetrically arranged on the base plate, the deflection main shaft is clamped in the main support frame, a sleeve rotating shaft portion is provided on the deflection platform, the deflection platform is rotatably arranged on the deflection main shaft through the sleeve rotating shaft portion, and the deflection platform is also symmetrically provided with notch portions.

[0007] By using a deflection platform that can deflect relative to the base plate, the angle of the raw material can be changed during the welding process, so that the operator can operate a whole long weld at a specific position. On the one hand, this can take into account the safety issues when personnel move frequently. On the other hand, the continuous operation of such a long weld is also more conducive to ensuring the welding quality and consistency.

[0008] Furthermore, the rotary drive mechanism comprises an arc-shaped driven component, a driving component and a transmission component, wherein the arc-shaped driven component is arranged at the bottom of the deflection platform, the driving component is arranged on the bottom plate, and the transmission component is arranged on the arc-shaped driven component.

[0009] The swing of the deflection platform can be controlled by driving the rotation drive mechanism.

[0010] Preferably, the arc-shaped follower assembly includes an arc-shaped follower frame, an arc-shaped gear ring and a first support frame, the arc-shaped follower frame is fixed to the bottom of the deflection platform, the arc-shaped follower frame is provided with an array of one-way ratchet portions, and the one-way ratchet portions on both sides of the arc-shaped follower frame are in opposite directions, the arc-shaped gear ring is fixed to the arc-shaped follower frame, and the first support frame is fixed to the base plate.

[0011] As a further preferred embodiment of the present invention, the driving assembly includes a driving motor, a driving gear, a driving main shaft and a driven gear. The driving motor is fixedly connected to the base plate, the driving gear is clamped on the output shaft of the driving motor, the driving main shaft is rotatably arranged in the first support frame, one end of the driving main shaft is provided with a flange portion, and the flange portion is annularly evenly provided with first blades, the driven gear is fixed to the driving main shaft, and the driven gear and the driving gear are meshed for transmission.

[0012] Through the rotation drive of the driving motor, the arc-shaped follower frame and the arc-shaped gear ring can be deflected with the center of the sleeve shaft as the center of the circle. At the same time, the driving main shaft outputs its own rotational motion toward the bidirectional adaptive locking mechanism through the first blade.

[0013] As a further preferred embodiment of the present invention, the transmission assembly includes a transmission gear, a cantilever support shaft and a linkage gear, the transmission gear is fixedly connected to the driving main shaft, the cantilever support shaft is clamped in the first support frame, the linkage gear is rotatably arranged on the cantilever support shaft, the linkage gear and the transmission gear are meshed for transmission, and the linkage gear and the arc-shaped follower frame are meshed for transmission.

[0014] Furthermore, the bidirectional adaptive locking mechanism comprises a flexible linkage component and a locking reversing component, the flexible linkage component is arranged on the bottom plate, and the locking reversing component is fixedly connected to the flexible linkage component.

[0015] The bidirectional adaptive locking mechanism can automatically control the deflection of the locking claw according to the different deflection directions of the deflection platform, so that the arc-shaped follower frame can automatically prevent falling in both deflection directions.

[0016] Preferably, the flexible linkage assembly includes a driven shaft and a second support frame, the second support frame is fixed to the base plate, the driven shaft is rotatably arranged in the second support frame, the driven shaft is provided with a sleeve portion, the sleeve portion and the flange portion are rotatably sealed and connected, the sleeve portion and the flange portion form a closed chamber, and the second blades matching the first blades are evenly distributed in an annular manner on the inner wall of the sleeve portion.

[0017] The closed chamber formed by the sleeve and the flange is filled with viscous liquid. The second blade and the first blade do not contact each other but have a small gap. Therefore, when the driving spindle rotates, it can drive the driven shaft to rotate together through the stirring of the liquid. However, when the driven shaft cannot rotate, the driving spindle can also rotate on its own (there will be no rigid interference between the two);

[0018] When the driving spindle rotates, the driven shaft will tend to rotate with the driving spindle under the action of the liquid transmission. When the driving spindle does not rotate, the driven shaft will rotate to a position maintained only by the tension of the elastic rope under the action of the elastic rope.

[0019] As a further preferred embodiment of the present invention, the locking reversing assembly includes a locking claw, a hinged column and an elastic rope, the locking claw is provided with a claw hinge portion, the locking claw is fixed to the driven shaft through the claw hinge portion, the hinged column is fixed to both ends of the locking claw and both ends of the arc-shaped follower frame, and both ends of the elastic rope are symmetrically provided with hinged rings, and the hinged rings are rotatably provided on the hinged column.

[0020] When the deflection platform is in the middle horizontal position, the tension of the elastic rope is evenly distributed. Therefore, after the driving spindle stops, the locking claw will turn into a horizontal state. At this time, the claw part has a locking effect on the one-way ratchet parts on both sides. Therefore, the deflection platform can only swing within a small range in the middle position, otherwise it will be locked by the locking claw.

[0021] When the deflection platform deflects toward one side, since the two elastic ropes are subjected to uneven forces, the locking claw will deflect toward the other side under the elastic force of the elastic ropes.

[0022] Furthermore, the adaptive pressing support mechanism includes a synchronous reset component and an oblique support component. The synchronous reset component is arranged on the deflection platform, and the oblique support component is arranged on the synchronous reset component.

[0023] The adaptive clamping support mechanism can clamp and support the raw materials for welding from both sides, so that the position of the raw materials can be pre-fixed before they are welded together, thus avoiding the problem of difficult position adjustment due to the large size of the raw materials.

[0024] Preferably, the synchronous reset assembly includes a winding shaft, a sliding abutment plate, a winding rope and a bogie. The winding shaft is rotatably arranged in an arc-shaped follower frame, and the winding shaft is driven to rotate by an external motor. Winding drums are provided at both ends of the winding shaft, and the sliding abutment plate is slidably arranged in the notch portion. One end of the winding rope is wound around the winding drum, and the bogie is fixedly connected to the bottom of the deflection platform, and the other end of the winding rope passes around the bogie and is fixedly connected to the sliding abutment plate.

[0025] By rotating the winding shaft, all the sliding plates can be controlled to slide synchronously outward, thereby leaving enough space for the placement of raw materials. After the raw materials are placed, the sliding plates can be automatically approached and contacted with the bottom plate of the product through the tightening spring.

[0026] As a further preferred embodiment of the present invention, the inclined support assembly includes a supporting inclined rod, an electric push rod, a spring base and a clamping spring, the supporting inclined rod is hinged to one end of the winding shaft, the end face of the supporting inclined rod is provided with an inclined boss, the electric push rod is hinged between the supporting inclined rod and the sliding support plate, the spring base is fixed in the notch portion, and the clamping spring is arranged between the spring base and the sliding support plate.

[0027] The rotation of the supporting diagonal rod can be controlled by the electric push rod, and during the rotation of the supporting diagonal rod, the position of the sliding plate can be automatically controlled to be locked, thereby overcoming the technical contradiction that the position of the sliding plate must be fixed (thereby forming a stable support for the side steel plate) and slide (to adapt to bottom steel plates of different specifications and to avoid position for loading and unloading of products); after being locked, the sliding plate no longer slides relative to the deflection platform. At this time, the side steel plate of the product is placed on the supporting diagonal rod, and it can be pre-positioned before welding.

[0028] The beneficial effects achieved by the present invention using the above structure are as follows:

[0029] (1) The deflection platform that can deflect relative to the base plate can change the angle of the raw material during the welding process, so that the operator can operate a whole long weld at a specific position. On the one hand, it can take into account the safety issues when personnel move frequently. On the other hand, the continuous operation of such a long weld is also more conducive to ensuring the welding quality and consistency.

[0030] (2) Through the rotation drive of the driving motor, the arc-shaped follower frame and the arc-shaped gear ring can be deflected with the center of the sleeve shaft as the center of the circle. At the same time, the driving main shaft outputs its own rotational motion toward the bidirectional adaptive locking mechanism through the first blade.

[0031] (3) The bidirectional adaptive locking mechanism can automatically control the deflection of the locking claw according to the different deflection directions of the deflection platform, so that the arc-shaped follower frame can automatically prevent falling in both deflection directions.

[0032] (4) The closed chamber formed by the sleeve and the flange is filled with viscous liquid. The second blade and the first blade do not contact each other but have a small gap. Therefore, when the driving shaft rotates, it can drive the driven shaft to rotate together through the stirring of the liquid. However, when the driven shaft cannot rotate, the driving shaft can also rotate on its own (there will be no rigid interference between the two);

[0033] (5) When the driving shaft rotates, the driven shaft will tend to rotate with the driving shaft under the action of the liquid transmission. When the driving shaft does not rotate, the driven shaft will rotate to a position maintained only by the tension of the elastic rope under the action of the elastic rope.

[0034] (6) When the deflection platform is in the middle horizontal position, the tension of the elastic rope is evenly distributed. Therefore, after the driving spindle stops, the locking claw will turn into a horizontal state. At this time, the claw part has a locking effect on the one-way ratchet parts on both sides. Therefore, the deflection platform can only swing within a small range in the middle position, otherwise it will be locked by the locking claw.

[0035] (7) When the deflection platform deflects toward one side, the locking claw will deflect toward the other side under the elastic force of the elastic rope due to uneven force on the two elastic ropes.

[0036] (8) The adaptive clamping support mechanism can clamp and support the raw materials for welding from both sides, so that the position of the raw materials can be pre-fixed before welding and connecting, thereby avoiding the problem of difficult position adjustment due to the large size of the raw materials.

[0037] (9) By rotating the winding shaft, all the sliding plates can be controlled to slide outward synchronously, thereby leaving enough space for the placement of the raw materials. After the raw materials are placed, the sliding plates can be automatically approached and contacted with the bottom plate of the product through the tightening spring.

[0038] (10) The rotation of the supporting diagonal rod can be controlled by an electric push rod, and during the rotation of the supporting diagonal rod, the position of the sliding plate can be automatically controlled to be locked, thereby overcoming the technical contradiction that the position of the sliding plate must be fixed (to form a stable support for the side steel plate) and slide (to adapt to the bottom steel plates of different specifications and to avoid position for loading and unloading of products); after being locked, the sliding plate no longer slides relative to the deflection platform. At this time, the side steel plate of the product is placed on the supporting diagonal rod, and it can be pre-positioned before welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A three-dimensional diagram of a turning tire frame for welding a steel box girder proposed by the present invention;

[0040] Figure 2 This is a front view of a turning tire frame for welding a steel box girder proposed by the present invention;

[0041] Figure 3 This is a left view of a turning tire frame for welding a steel box girder proposed by the present invention;

[0042] Figure 4 A top view of a turning tire frame for welding a steel box girder proposed by the present invention;

[0043] Figure 5 for Figure 2 A cross-sectional view along the cutting line AA;

[0044] Figure 6 for Figure 3 A cross-sectional view along the cutting line BB;

[0045] Figure 7 for Figure 5 A cross-sectional view along the cutting line CC;

[0046] Figure 8 for Figure 3 A cross-sectional view along the cutting line DD;

[0047] Fig. 9 An exploded view of a turning cradle for welding a steel box girder proposed by the present invention;

[0048] Fig.10 for Figure 6 A partial enlarged view of point Ⅰ in the middle;

[0049] Fig.11 for Figure 5 A partial enlarged view of the middle II;

[0050] Fig.12 for Figure 7 A partial enlarged view of the middle part III;

[0051] Fig.13 for Figure 8 A partial enlarged view of the middle IV;

[0052] Fig.14 for Figure 1 A partial enlarged view of point V in the middle.

[0053] Among them, 1. deflection support assembly, 2. rotation drive mechanism, 3. bidirectional adaptive locking mechanism, 4. adaptive tightening support mechanism, 5. bottom plate, 6. main support frame, 7. deflection main shaft, 8. deflection platform, 9. sleeve shaft portion, 10. notch portion, 11. arc driven assembly, 12. drive assembly, 13. transmission assembly, 14. arc driven frame, 15. arc gear ring, 16. first support frame, 17. drive motor, 18. drive gear, 19. drive main shaft, 20. driven gear, 21. transmission gear, 22. cantilever support shaft, 23. linkage gear, 24. one-way ratchet portion, 25. Flange portion, 26. First blade, 27. Flexible linkage assembly, 28. Locking reversing assembly, 29. Driven shaft, 30. Second support frame, 31. Locking claw, 32. Articulated column, 33. Elastic rope, 34. Sleeve portion, 35. Second blade, 36. Claw hinge portion, 37. Claw portion, 38. Articulated ring, 39. Synchronous reset assembly, 40. Oblique support assembly, 41. Winding shaft, 42. Sliding abutment plate, 43. Winding rope, 44. Bogie, 45. Support oblique rod, 46. Electric push rod, 47. Spring base, 48. Tightening spring, 49. Winding drum, 50. Inclined boss.

[0054] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0057] like Figure 1 to Figure 14 As shown, the present invention proposes a tipping tire frame for welding steel box girders, including a deflection support assembly 1, a rotation drive mechanism 2, a bidirectional adaptive locking mechanism 3 and an adaptive tightening support mechanism 4, the deflection support assembly 1 includes a base plate 5, a main support frame 6, a deflection main shaft 7 and a deflection platform 8, the main support frame 6 is symmetrically arranged on the base plate 5, the deflection main shaft 7 is clamped in the main support frame 6, a sleeve rotating shaft portion 9 is provided on the deflection platform 8, the deflection platform 8 is rotatably arranged on the deflection main shaft 7 through the sleeve rotating shaft portion 9, and the deflection platform 8 is also symmetrically provided with a notch portion 10.

[0058] By means of the deflection platform 8 that can be deflected relative to the base plate 5, the angle of the raw material can be changed during the welding process, so that the operator can operate on a whole long weld at a specific position. On the one hand, this can take into account the safety issues when personnel move frequently. On the other hand, the continuous operation of such a long weld is also more conducive to ensuring the welding quality and consistency.

[0059] The adaptive pressing support mechanism 4 includes a synchronous reset component 39 and an oblique support component 40 . The synchronous reset component 39 is arranged on the deflection platform 8 , and the oblique support component 40 is arranged on the synchronous reset component 39 .

[0060] The adaptive clamping support mechanism 4 can clamp and support the raw materials for welding from both sides, so that the positions of the raw materials can be pre-fixed before they are welded together, thereby avoiding the problem of difficult position adjustment due to the excessive size of the raw materials.

[0061] The synchronous reset assembly 39 includes a winding shaft 41, a sliding plate 42, a winding rope 43 and a bogie 44. The winding shaft 41 is rotatably arranged in the arc-shaped follower frame 14. The winding shaft 41 is driven to rotate by an external motor. Winding drums 49 are provided at both ends of the winding shaft 41. The sliding plate 42 is engaged and slidably arranged in the notch 10. One end of the winding rope 43 is wound around the winding drum 49. The bogie 44 is fixedly connected to the bottom of the deflection platform 8. The other end of the winding rope 43 passes around the bogie 44 and is fixedly connected to the sliding plate 42.

[0062] By rotating the winding shaft 41, all the sliding plates 42 can be controlled to slide synchronously outward, thereby leaving enough space for the placement of raw materials. After the raw materials are placed, the sliding plates 42 can be automatically approached and contacted with the bottom plate 5 of the product through the tightening spring 48.

[0063] The inclined support assembly 40 includes a supporting inclined rod 45, an electric push rod 46, a spring base 47 and a clamping spring 48. The supporting inclined rod 45 is hinged to one end of the winding shaft 41. The end face of the supporting inclined rod 45 is provided with an inclined boss 50. The electric push rod 46 is hinged between the supporting inclined rod 45 and the sliding support plate 42. The spring base 47 is fixed in the notch portion 10. The clamping spring 48 is provided between the spring base 47 and the sliding support plate 42.

[0064] The rotation of the supporting diagonal rod 45 can be controlled by the electric push rod 46, and during the rotation of the supporting diagonal rod 45, the position of the sliding plate 42 can be automatically controlled to be locked, thereby overcoming the technical contradiction that the position of the sliding plate 42 must be fixed (thereby forming a stable support for the side steel plates) and slide (to adapt to bottom steel plates of different specifications and to avoid position for loading and unloading of products); after being locked, the sliding plate 42 no longer slides relative to the deflection platform 8. At this time, the side steel plates of the product are placed on the supporting diagonal rod 45, and they can be pre-positioned before welding.

[0065] The rotary drive mechanism 2 includes an arcuate driven component 11 , a driving component 12 and a transmission component 13 . The arcuate driven component 11 is disposed at the bottom of the deflection platform 8 , the driving component 12 is disposed on the bottom plate 5 , and the transmission component 13 is disposed on the arcuate driven component 11 .

[0066] By driving the rotation drive mechanism 2 , the swing of the deflection platform 8 can be controlled.

[0067] The arcuate follower assembly 11 includes an arcuate follower frame 14, an arcuate gear ring 15 and a first support frame 16. The arcuate follower frame 14 is fixedly connected to the bottom of the deflection platform 8. A one-way ratchet portion 24 is arrayed on the arcuate follower frame 14. The one-way ratchet portions 24 on both sides of the arcuate follower frame 14 are in opposite directions. The arcuate gear ring 15 is fixedly connected to the arcuate follower frame 14, and the first support frame 16 is fixedly connected to the base plate 5.

[0068] The driving assembly 12 includes a driving motor 17, a driving gear 18, a driving spindle 19 and a driven gear 20. The driving motor 17 is fixedly connected to the base plate 5. The driving gear 18 is engaged with the output shaft of the driving motor 17. The driving spindle 19 is rotatably arranged in the first support frame 16. A flange portion 25 is provided at one end of the driving spindle 19. First blades 26 are evenly distributed in an annular manner on the flange portion 25. The driven gear 20 is fixedly connected to the driving spindle 19. The driven gear 20 and the driving gear 18 are meshed for transmission.

[0069] Through the rotation drive of the driving motor 17, the arc-shaped follower frame 14 and the arc-shaped ring gear 15 can be deflected with the center of the sleeve shaft portion 9 as the center of the circle. At the same time, the driving main shaft 19 outputs its own rotational motion toward the bidirectional adaptive locking mechanism 3 through the first blade 26.

[0070] The transmission assembly 13 includes a transmission gear 21, a cantilever support shaft 22 and a linkage gear 23. The transmission gear 21 is fixedly connected to the driving main shaft 19, the cantilever support shaft 22 is clamped in the first support frame 16, and the linkage gear 23 is rotatably arranged on the cantilever support shaft 22. The linkage gear 23 and the transmission gear 21 are meshed for transmission, and the linkage gear 23 and the arc-shaped follower frame 14 are meshed for transmission.

[0071] The bidirectional adaptive locking mechanism 3 includes a flexible linkage component 27 and a locking reversing component 28 . The flexible linkage component 27 is disposed on the bottom plate 5 , and the locking reversing component 28 is fixedly connected to the flexible linkage component 27 .

[0072] The bidirectional adaptive locking mechanism 3 can automatically control the deflection of the locking claw 31 according to the different deflection directions of the deflection platform 8, so that the arc-shaped follower frame 14 can be automatically locked to prevent falling in both deflection directions.

[0073] The flexible linkage assembly 27 includes a driven shaft 29 and a second support frame 30. The second support frame 30 is fixedly connected to the base plate 5. The driven shaft 29 is rotatably arranged in the second support frame 30. A sleeve portion 34 is provided on the driven shaft 29. The sleeve portion 34 and the flange portion 25 are rotatably sealed and connected. The sleeve portion 34 and the flange portion 25 form a closed chamber. Second blades 35 matching the first blades 26 are evenly distributed in an annular shape on the inner wall of the sleeve portion 34.

[0074] The closed chamber formed by the sleeve portion 34 and the flange portion 25 is filled with viscous liquid. The second blade 35 and the first blade 26 do not contact each other but have a small gap. Therefore, when the driving main shaft 19 rotates, it can drive the driven shaft 29 to rotate together through the stirring of the liquid. However, when the driven shaft 29 cannot rotate, the driving main shaft 19 can also rotate on its own (there will be no rigid interference between the two);

[0075] When the driving spindle 19 rotates, the driven shaft 29 will tend to rotate with the driving spindle 19 under the action of the liquid transmission. When the driving spindle 19 does not rotate, the driven shaft 29 will rotate to a position maintained only by the tension of the elastic rope 33 under the action of the elastic rope 33.

[0076] The locking reversing assembly 28 includes a locking claw 31, a hinged column 32 and an elastic rope 33. The locking claw 31 is provided with a claw hinge portion 36. The locking claw 31 is fixed to the driven shaft 29 through the claw hinge portion 36. The hinged column 32 is fixed to both ends of the locking claw 31 and both ends of the arc-shaped follower frame 14. Both ends of the elastic rope 33 are symmetrically provided with hinged rings 38, and the hinged rings 38 are rotatably provided on the hinged column 32.

[0077] When the deflection platform 8 is in the middle horizontal position, the tension of the elastic rope 33 is even, so after the driving spindle 19 stops, the locking claw 31 will be transformed into a horizontal state. At this time, the claw portion 37 has a locking effect on the one-way ratchet portions 24 on both sides, so the deflection platform 8 can only swing within a small range in the middle position, otherwise it will be locked by the locking claw 31.

[0078] When the deflection platform 8 deflects toward one side, since the two elastic ropes 33 are subjected to uneven forces, the locking claw 31 will deflect toward the other side under the elastic force of the elastic ropes 33 .

[0079] When in use, the user first needs to drive the winding shaft 41 to rotate through an external motor, and through the rolling and winding of the winding drum 49, all the sliding plates 42 can be pulled outward through the winding rope 43, so that there is enough space between the sliding plates 42 to place the bottom steel plate of the steel box beam. After the bottom steel plate is placed in the middle position of the deflection platform 8, the winding rope 43 wound on the winding drum 49 can be released by rotating the winding shaft 41 in the opposite direction. The sliding plates 42 without tension will slide toward the middle position under the elastic force of the tightening spring 48 until the sliding plates 42 come into contact with the side of the steel plate and stop.

[0080] Subsequently, the supporting diagonal rod 45 can be transformed from a horizontal state to an inclined state by extending the electric push rod 46 until the angle of the supporting diagonal rod 45 matches the angle of the side steel plate of the steel box girder. During the rotation of the supporting diagonal rod 45, the inclined boss 50 will be squeezed by the side of the notch 10, thereby squeezing the hinge position of the sliding plate 42 and the supporting diagonal rod 45. Due to the increase in friction, on the one hand, the relative angle between the sliding plate 42 and the supporting diagonal rod 45 is transformed from movable to fixed, and on the other hand, the sliding plate 42 is transformed from a sliding state relative to the notch 10 to a fixed locked state.

[0081] Then, the steel plates on both sides of the steel box girder are hoisted and placed on the supporting diagonal rods 45, and are positioned by the angle and position support of the supporting diagonal rods 45; then, the side steel plates and the bottom steel plates of the steel box girder are connected by spot welding, and finally the entire weld is welded.

[0082] During the welding process, the tilt angle of the deflection platform 8 needs to be changed so that the welding target position is adapted to the position of the operator;

[0083] When the deflection platform 8 is in a horizontal state, the tensions exerted by the elastic ropes 33 on both sides on the locking claw 31 are equal, and the locking claw 31 is also in a horizontal state. At this time, the claw portions 37 on both sides can be locked with the one-way ratchet portion 24, so that the deflection platform 8 can only be deflected slightly in the middle position. When the deflection amplitude is too large, the claw portion 37 and the one-way ratchet portion 24 will contact and get stuck, preventing further deflection.

[0084] When the deflection platform 8 is to be controlled to rotate counterclockwise, the driving motor 17 needs to be started, and the driving gear 18 drives the driving spindle 19 and the driven gear 20 to rotate. At the same time, the transmission gear 21 on the driving spindle 19 also drives the arc gear ring 15 to rotate through the linkage gear 23, thereby controlling the deflection of the deflection platform 8.

[0085] When the driving main shaft 19 rotates, it will stir the liquid between the flange portion 25 and the sleeve portion 34 through the first blade 26, and then drive the driven shaft 29 to rotate. Since the rotation directions of the driving main shaft 19 and the linkage gear 23 are opposite, when the driving motor 17 drives the deflection platform 8 to rotate counterclockwise with the sleeve shaft portion 9 as the axis, the driven shaft 29 will deflect counterclockwise with the locking claw 31 as the axis. In other words, the one-way ratchet portion 24 in the deflection direction of the deflection platform 8 will form a ratchet-like matching relationship with the claw portion 37. Under this matching relationship, the deflection platform 8 can continue to deflect under the control of the driving motor 17, but cannot be reset under the action of its own weight; and the one-way ratchet portion 24 on the other side is directly and completely separated from the claw portion 37.

[0086] The lateral width of the locking claw 31 determines the angular limit at which the deflection platform 8 can be deflected. This data can be designed according to actual needs. Generally speaking, when the center position of the arc-shaped follower frame 14 passes the claw portion 37, the locking claw 31 cannot effectively prevent the deflection platform 8 from rotating.

[0087] When the deflection platform 8 is already in a counterclockwise deflection state and wants to continue to deflect counterclockwise, due to the tension of the two elastic ropes 33, the locking claw 31 has been maintained in the counterclockwise deflection state. In this state, the locking claw 31 will prevent the deflection platform 8 from rotating clockwise, but will not prevent the deflection platform 8 from rotating counterclockwise. Therefore, the rotation of the deflection platform 8 can continue to be controlled by driving the drive motor 17.

[0088] When the deflection platform 8 is already in the counterclockwise deflection state and it is desired to reset the deflection clockwise, the deflection platform 8 is first rotated counterclockwise by the rotation of the driving motor 17 to an amplitude less than one unit angle (the angle required to rotate through one one-way ratchet portion 24 is one unit angle), and then the driving motor 17 is rotated in the reverse direction. Due to the change in the rotation direction, the rotation of the driving spindle 19 at this time will cause the driven shaft 29 to have a clockwise rotation tendency, so that before the one-way ratchet portion 24 and the claw portion 37 are combined again, the locking claw 31 is first rotated clockwise. At this time, the claw portion 37 originally combined with the one-way ratchet portion 24 rotates to avoid the position, releases the obstruction and locking of the one-way ratchet portion 24, and maintains this release state during the rotation of the driving spindle 19;

[0089] During the process of driving the main shaft 19 to rotate, the agitation of the liquid can overcome the elastic force of the elastic rope 33. When the position adjustment of the deflection platform 8 is completed, the driving motor 17 stops rotating. After the agitation of the liquid is lost, the driven shaft 29 will be restored to a balanced state under the action of the elastic force of the elastic rope 33. Due to the position design of the elastic rope 33, if the deflection platform 8 is in a horizontal state, the locking claw 31 is also in a horizontal state. At this time, the locking claw 31 can lock the rotation of the deflection platform 8 in two directions; if the deflection platform 8 deflects to one side clockwise, the locking claw 31 deflects to the other side clockwise. At this time, the locking claw 31 can prevent the deflected deflection platform 8 from resetting; if the deflection platform 8 deflects to one side counterclockwise, the locking claw 31 deflects to the other side counterclockwise. At this time, the locking claw 31 can prevent the deflected deflection platform 8 from resetting.

[0090] Through the automatic locking of the rotary drive mechanism 2 and the bidirectional adaptive locking mechanism 3, during the welding process, on the one hand, there is no need to enable the motor to maintain the angular deflection of the deflection platform 8; on the other hand, the technical effect of automatic locking and unlocking can be achieved only through a clever mechanical mechanism without the need for manual safety locking and unlocking.

[0091] After the side welding is completed, the top steel plate of the steel box girder can be hoisted and welded.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0093] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A turning frame for welding steel box beams, It is characterized in that The invention comprises a deflection support assembly (1), a rotation drive mechanism (2), a bidirectional adaptive locking mechanism (3) and an adaptive pressing support mechanism (4); the deflection support assembly (1) comprises a base plate (5), a main support frame (6), a deflection main shaft (7) and a deflection platform (8); the main support frame (6) is symmetrically arranged on the base plate (5); the deflection main shaft (7) is snap-fitted into the main support frame (6); a sleeve rotating shaft portion (9) is arranged on the deflection platform (8); the deflection platform (8) is rotatably arranged on the deflection main shaft (7) via the sleeve rotating shaft portion (9); and the deflection platform (8) is also symmetrically provided with a notch portion (10); The rotary drive mechanism (2) comprises an arc-shaped driven component (11), a driving component (12) and a transmission component (13), wherein the arc-shaped driven component (11) is arranged at the bottom of the deflection platform (8), the driving component (12) is arranged on the bottom plate (5), and the transmission component (13) is arranged on the arc-shaped driven component (11); The arc driven assembly (11) comprises an arc driven frame (14), an arc gear ring (15) and a first support frame (16); the arc driven frame (14) is fixedly connected to the bottom of the deflection platform (8); one-way ratchet parts (24) are arranged in an array on the outer arc surface of the arc driven frame (14); the one-way ratchet parts (24) on both sides of the arc driven frame (14) are in opposite directions; the arc gear ring (15) is fixedly connected to the arc driven frame (14); and the first support frame (16) is fixedly connected to the bottom plate (5); The bidirectional adaptive locking mechanism (3) comprises a flexible linkage component (27) and a locking reversing component (28), wherein the flexible linkage component (27) is arranged on the bottom plate (5), and the locking reversing component (28) is fixedly connected to the flexible linkage component (27); The flexible linkage assembly (27) comprises a driven shaft (29) and a second support frame (30), the second support frame (30) being fixedly connected to the base plate (5), the driven shaft (29) being rotatably arranged in the second support frame (30), the driven shaft (29) being provided with a sleeve portion (34), the sleeve portion (34) and the flange portion (25) being rotatably sealed and connected to each other, the sleeve portion (34) and the flange portion (25) forming a closed chamber, and second blades (35) matching the first blades (26) being evenly distributed in an annular pattern on the inner wall of the sleeve portion (34); The locking reversing assembly (28) comprises a locking claw (31), a hinged column (32) and an elastic rope (33); the locking claw (31) is provided with a claw hinged portion (36); the locking claw (31) is fixedly connected to the driven shaft (29) via the claw hinged portion (36); the hinged column (32) is fixedly connected to two ends of the locking claw (31) and two ends of the arc-shaped driven frame (14); hinged rings (38) are symmetrically provided at two ends of the elastic rope (33); and the hinged rings (38) are rotatably arranged on the hinged column (32).

2. A steel box girder welding overturning tire frame according to claim 1, Features: The driving assembly (12) comprises a driving motor (17), a driving gear (18), a driving main shaft (19) and a driven gear (20); the driving motor (17) is fixedly connected to the base plate (5); the driving gear (18) is engaged with the output shaft of the driving motor (17); the driving main shaft (19) is rotatably arranged in the first support frame (16); a flange portion (25) is provided at one end of the driving main shaft (19); first blades (26) are evenly distributed in an annular manner on the flange portion (25); the driven gear (20) is fixedly connected to the driving main shaft (19); and the driven gear (20) and the driving gear (18) are meshed for transmission.

3. The steel box girder welding turning tire frame according to claim 2, Features: The transmission assembly (13) comprises a transmission gear (21), a cantilever support shaft (22) and a linkage gear (23); the transmission gear (21) is fixedly connected to the driving main shaft (19); the cantilever support shaft (22) is snap-fitted in the first support frame (16); the linkage gear (23) is rotatably disposed on the cantilever support shaft (22); the linkage gear (23) and the transmission gear (21) are meshed for transmission; and the linkage gear (23) and the arc-shaped driven frame (14) are meshed for transmission.

4. The steel box girder welding turning tire frame according to claim 3, Features: The adaptive abutting support mechanism (4) comprises a synchronous reset component (39) and an oblique support component (40); the synchronous reset component (39) is arranged on the deflection platform (8), and the oblique support component (40) is arranged on the synchronous reset component (39).

5. The turning tire frame for welding a steel box beam according to claim 4, Features: The synchronous reset assembly (39) comprises a winding shaft (41), a sliding plate (42), a winding rope (43) and a bogie (44); the winding shaft (41) is rotatably arranged in an arc-shaped driven frame (14); the winding shaft (41) is driven to rotate by an external motor; winding drums (49) are arranged at both ends of the winding shaft (41); the sliding plate (42) is slidably arranged in the notch (10) in an engaging manner; one end of the winding rope (43) is wound around the winding drum (49); the bogie (44) is fixedly connected to the bottom of the deflection platform (8); and the other end of the winding rope (43) is passed around the bogie (44) and is fixedly connected to the sliding plate (42).

6. The turning tire frame for welding a steel box beam according to claim 5, Features: The oblique support assembly (40) comprises an oblique support rod (45), an electric push rod (46), a spring base (47) and a pressing spring (48); the oblique support rod (45) is hinged to one end of a winding shaft (41); an end surface of the oblique support rod (45) is provided with an inclined boss (50); the electric push rod (46) is hinged between the oblique support rod (45) and the sliding pressing plate (42); the spring base (47) is fixed to the notch (10); and the pressing spring (48) is provided between the spring base (47) and the sliding pressing plate (42).

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