Movable welding equipment for box girder jig frame

Abstract

The invention discloses movable welding equipment for a box girder jig frame, which comprises a mounting base and locking assemblies uniformly assembled on the mounting base, and the locking assemblies are used for positioning the bottom of the box girder jig frame; the equipment further comprises a gantry type advancing frame assembled on the mounting base, and the gantry type advancing frame runs in the length direction of the base and is erected to the periphery of the box girder jig frame. A lifting platform is arranged on the gantry frame, two sets of outer positioning assemblies and two sets of inner positioning assemblies are installed on the platform in a sliding mode, and the inner positioning assemblies and the outer positioning assemblies are symmetrically arranged and located on the inner side and the outer side of the box girder jig frame respectively. The lifting platform is further provided with a flow dividing driving assembly which is responsible for transmitting power to the outer positioning assembly and the inner positioning assembly to drive the outer positioning assembly and the inner positioning assembly to operate independently. The clamping assembly comprises two sets of chucks which are symmetrically arranged, and the chucks are installed at the bottom of the outer positioning assembly in a sliding mode and move in the width direction of the installation base. According to the equipment, the welding precision and efficiency are remarkably improved, the stability and reliability of the equipment are enhanced, and meanwhile, the maintenance difficulty is reduced by simplifying a power system.

Description

Technical Field

[0001] The invention relates to the technical field of building construction equipment, in particular to a mobile welding device for a box beam frame. Background Art

[0002] In modern engineering construction, box girder frames are widely used in the construction of large infrastructure projects such as bridges and tunnels. The welding and assembly of box girder frames is one of the key processes in such projects. The traditional welding method usually relies on manual positioning, splicing and welding of various components through manual operation. Although this method is simple to operate, there are many technical problems in practical applications, especially in terms of welding accuracy and efficiency, which is difficult to meet the high requirements of modern construction.

[0003] First of all, the biggest problem with manual positioning is the poor welding accuracy. Due to reliance on manual operation, positioning errors cannot be effectively controlled, resulting in inaccurate matching between components during welding and assembly, which affects the quality of the overall structure and may even cause construction accidents. In addition, during manual welding, the operator's skill level, experience, and working environment are different, making it impossible to ensure the stability of welding quality.

[0004] Secondly, the traditional manual welding method has the problem of low welding efficiency. Since a lot of manual operations are required, including the positioning, clamping and welding of various components, the overall construction period is long and the efficiency cannot meet the needs of large-scale construction projects. Under high-intensity construction tasks, the efficiency of manual operations is further reduced, which seriously affects the progress and cost control of the project.

[0005] Therefore, as the scale of engineering construction continues to expand, the demand for automated, high-precision welding equipment has become particularly urgent. In order to overcome the shortcomings of traditional methods, designing dedicated welding equipment has become the key to improving production efficiency and welding quality. The equipment must be able to accurately assemble and weld each component of the box girder frame, which requires efficient collaboration involving multiple operating and positioning components.

[0006] However, when designing this type of automated welding equipment, several technical challenges must be considered, especially how to ensure the stable operation of each positioning component and how to avoid interference between different components. Box girder frames are usually complex in structure and large in size, so the positioning components must have a high degree of stability and accuracy. In addition, in actual operation, the mutual coordination of various positioning and drive components is the key to ensure the smooth progress of the welding process. If there is mutual interference or instability between the positioning components, it may lead to reduced welding accuracy or equipment failure, which in turn affects the overall construction quality.

[0007] Finally, considering the long-term use and maintenance of the equipment, simplifying the power system is also an important direction in the design. The complex power transmission system not only increases the weight and volume of the equipment, but also increases the difficulty and cost of maintenance. How to reduce the complexity of the power system and improve the maintenance efficiency of the equipment while ensuring the efficient operation of the equipment has become an important issue in this technical solution. Summary of the invention

[0008] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a mobile welding equipment for a beam frame, which significantly improves the welding accuracy and efficiency, enhances the stability and reliability of the equipment, and at the same time simplifies the power system and reduces the difficulty of maintenance.

[0009] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a mobile welding device for a box girder frame, including a mounting base and a locking assembly evenly assembled on the mounting base, wherein the locking assembly locks and positions the bottom structure of the box girder frame.

[0010] It also includes a gantry type traveling frame which is assembled on the mounting base and erected to the periphery of the box beam tire frame, and the gantry type traveling frame runs along the length direction of the mounting base.

[0011] A lifting platform that moves along a vertical square is mounted on the gantry-type traveling frame, and two groups of outer positioning components and inner positioning components that run along the width direction of the mounting base are slidably mounted on the lifting platform. The two groups of outer positioning components and inner positioning components are symmetrically arranged along the center line in the width direction of the mounting base, and the inner positioning components and outer positioning components are respectively arranged on the inner and outer sides of the box girder frame.

[0012] The lifting platform is also equipped with a shunt drive component that maintains power connection with both the outer positioning component and the inner positioning component. The power of the shunt drive component is transmitted to the outer positioning component and the inner positioning component, and the shunt drive component drives the outer positioning component and the inner positioning component to operate independently.

[0013] It also includes a clamping assembly, which includes two groups of symmetrically arranged clamps. The two groups of clamps are respectively slidably installed on the bottom of the two groups of external positioning assemblies and run along the width direction of the installation base.

[0014] It also includes welding equipment assembled on the outer positioning assembly and the inner positioning assembly, and the welding equipment is used to weld and assemble the components of the box beam frame.

[0015] On the basis of the above technical scheme, in order to ensure that the box girder frame can realize the accurate positioning and binding positioning of the steel cage in the casting of the box girder prefabricated parts, the following technical scheme is provided.

[0016] The box beam frame includes a bottom beam, a support unit, a reinforcement bar, an upper positioning bar, and a lower positioning bar. The bottom beam includes multiple groups distributed in parallel and arranged along the length direction of the mounting base. The bottom beam is locked and positioned by a locking assembly.

[0017] The support units are evenly distributed along the length direction of the bottom beam, and the support units include longitudinal beams, vertical struts, diagonal struts, and sleeves. The longitudinal beams are welded to each group of the bottom beams and are vertically distributed with the bottom beams. Both ends of the longitudinal beams are welded with vertical struts and diagonal struts that maintain symmetrical distribution. The diagonal struts are arranged on the inner side of the vertical struts and the top ends of the diagonal struts and vertical struts are welded. Multiple groups of sleeves evenly arranged in the vertical direction are welded to the vertical struts and diagonal struts arranged at the same end of the longitudinal beam.

[0018] The reinforcement bar, upper positioning bar and lower positioning bar are all distributed vertically with the longitudinal beam. The reinforcement bar and upper positioning bar are welded to the top connection of the diagonal support rod and the vertical support rod. The upper positioning bar is arranged on the inner side of the reinforcement bar, and the lower positioning bar is welded to the longitudinal beam. Positioning slots are evenly opened on the upper positioning bar and the lower positioning bar.

[0019] On the basis of the above technical solution, in order to ensure that the locking assembly can be stably assembled on the mounting base, achieve effective positioning of each bottom beam, and facilitate the operation of the locking assembly, the following technical solution is provided.

[0020] The mounting base is provided with a plurality of positioning grooves, and positioning pads are arranged in the positioning grooves. The positioning grooves and the positioning pads are arranged along the length direction of the mounting base, and the bottom beam is arranged on the positioning pads.

[0021] The locking assembly includes a driving shaft, a driving sprocket, and a transmission sprocket and a threaded push rod arranged on both sides of each positioning groove. The transmission sprocket is rotatably installed in the installation base, the threaded push rod is slidably installed in the installation base and is screwed with the axis of the transmission sprocket, the end of the threaded push rod extends into the positioning groove and is abutted against the bottom beam, the driving shaft is rotatably installed in the installation base and is arranged along the width direction of the installation base, a plurality of groups of driving sprockets are fixedly connected to the driving shaft and are vertically opposite to each group of driving sprockets, the driving sprockets and the transmission sprockets arranged in the same vertical direction realize chain transmission through a chain, and the end of the driving shaft is fixedly connected to a handwheel arranged on the outside of the installation base.

[0022] On the basis of the above technical solutions, in order to ensure that the gantry type traveling frame can stably move on the mounting base and ensure that the lifting platform can be assembled on the gantry type traveling frame in a lifting motion, the following technical solutions are provided.

[0023] Traveling guide rails A arranged along the length direction of the mounting base are installed on both sides of the mounting base, and the traveling guide rails A are distributed on both sides of the box beam tire frame. The bottom of the gantry type traveling frame is installed on the traveling wheel A, and the traveling wheel A is matched with the traveling guide rail A.

[0024] The gantry type traveling frame is fixedly connected with guide columns arranged in a vertical direction, and both ends of the lifting platform are slidably mounted on the guide columns.

[0025] On the basis of the above technical solutions, in order to ensure that the external positioning components and the internal positioning components can be stably assembled and operated on the lifting platform, and to achieve effective positioning of the support unit and the reinforcement bar, the upper positioning bar, and the lower positioning bar, the following technical solutions are provided.

[0026] The lifting platform is equipped with a travel guide rail B and a travel guide rail C arranged along the length direction of the mounting base, and the travel guide rail C is arranged on the inner side of the travel guide rail B.

[0027] The external positioning component includes a No. 1 traveling trolley, a connecting bracket A, a positioning bracket A fixedly connected to the connecting bracket A, and an assembly slot. The No. 1 traveling trolley is equipped with a traveling wheel B that is compatible with the traveling guide rail B. The connecting bracket A is fixedly connected to the bottom of the traveling trolley. The positioning bracket A is arranged at the top of the assembly slot and abuts against the reinforcement strip for positioning. The assembly slot covers the periphery of the support rod and abuts against the vertical support rod and the sleeve for positioning.

[0028] The internal positioning assembly includes a No. 2 traveling trolley, a connecting bracket B, and a positioning bracket B, a positioning bracket C, and a positioning bracket D fixed to the connecting bracket B and arranged in sequence from top to bottom. The No. 2 traveling trolley is equipped with a traveling wheel C that is compatible with the traveling guide rail C. The positioning bracket B abuts and positions the upper positioning bar, the positioning bracket C abuts and positions the side wall of the diagonal support rod, and the positioning bracket D abuts and positions the lower positioning bar.

[0029] On the basis of the above technical solution, in order to ensure that the diverter drive assembly can be stably assembled on the lifting platform and realize the power connection between the diverter drive assembly and the external positioning assembly and the internal positioning assembly, the following technical solution is provided.

[0030] The diversion drive assembly includes a No. 1 drive motor and a reciprocating screw A and a reciprocating screw B arranged along the width direction of the mounting base. The No. 1 traveling trolley in the two groups of the external positioning assemblies is screwed with a reciprocating screw A, and the two groups of reciprocating screws A are coaxially fixedly connected through the connecting shaft A. The No. 2 traveling trolley in the two groups of the internal positioning assemblies is screwed with a reciprocating screw B, and the two groups of reciprocating screws B are coaxially fixedly connected through the connecting shaft B. The reciprocating screws A and B are both rotatably installed on the lifting platform, and the No. 1 drive motor is fixedly installed on the lifting platform and is dynamically connected to the connecting shafts A and B.

[0031] On the basis of the above technical solution, in order to ensure that the No. 1 drive motor can realize the diversion transmission of power to drive the connecting shaft A or the connecting shaft B to operate independently, and then realize the posture adjustment of the external positioning component and the internal positioning component, the following technical solution is provided.

[0032] The diversion drive assembly includes two groups of ratchet mechanisms that are arranged in reverse, and the ratchet mechanisms include nested and meshed inner ratchets and clamping claws. The inner ratchets in the two groups of ratchet mechanisms are rotatably installed on the lifting platform and are respectively arranged on the peripheries of the connecting shaft A and the connecting shaft B. The pawls in the two groups of ratchet mechanisms are respectively rotatably installed on the peripheries of the connecting shaft A and the connecting shaft B. The connecting shaft A and the connecting shaft B are both equipped with springs that are kept in contact with the corresponding pawls. The peripheries of the two groups of inner ratchets are provided with rotating sprockets, and the two groups of rotating sprockets realize chain transmission through chains. A transmission bevel gear A is fixedly connected to one group of inner ratchets, and a driving bevel gear A that is meshed with the transmission bevel gear A is fixedly connected to the output shaft of the No. 1 drive motor.

[0033] On the basis of the above technical solution, in order to ensure that the clamp in the clamping assembly can stably slide at the bottom of the external positioning assembly and realize effective clamping and positioning of the two ends of the longitudinal beam, the following technical solution is provided.

[0034] A sliding seat is fixedly connected to the chuck and slidably installed at the bottom of the connecting bracket A; the clamping assembly also includes a No. 2 driving motor, a transmission shaft, and an adjusting screw. The adjusting screw is rotatably installed at the bottom of the connecting bracket A and is rotationally connected to the sliding seat. The transmission shaft is rotatably installed on the connecting bracket and arranged in the vertical direction. A driving bevel gear B is fixedly connected to the bottom end of the transmission shaft, and a transmission bevel gear B is fixedly connected to the end of the adjusting screw and is meshed with the driving bevel gear B. The No. 2 driving motor is fixedly installed on the lifting platform and maintains a power connection with the transmission shaft.

[0035] On the basis of the above technical solution, in order to ensure that the power of the second drive motor can be stably transmitted to the transmission shaft assembled on the external positioning component, and at the same time will not interfere with the power transmission when the external positioning component is running, the following technical solution is provided.

[0036] The clamping assembly also includes two groups of spline shafts and two groups of spline sleeves. The spline shafts are rotatably installed on the lifting platform and arranged along the width direction of the mounting base. The two groups of spline shafts are coaxially fixedly connected through a connecting shaft C. A transmission bevel gear C is fixedly connected to the connecting shaft C. A driving bevel gear C that is meshed with the transmission bevel gear C is fixedly connected to the output shaft of the second driving motor.

[0037] The spline sleeve is rotatably mounted on the No. 1 traveling trolley and is slidably plugged with the spline shaft on the corresponding side. The end of the spline sleeve is fixedly connected to a driving bevel gear D, and the top end of the transmission shaft is fixedly connected to a transmission bevel gear D that is meshed with the driving bevel gear D.

[0038] Beneficial effects of the present invention:

[0039] 1. Improve welding accuracy. The cooperation of multiple positioning components and drive systems as well as clamping components and locking components can achieve accurate positioning and assembly of various components of the box girder frame. Through the cooperation of the external positioning component and the internal positioning component, the clamp in the clamping component can slide smoothly along the width direction of the installation base and accurately engage with the support unit, thereby ensuring the precise docking of various components during the welding process. Avoid welding deviations caused by manual operation errors, and ensure the stability and consistency of welding quality.

[0040] 2. Improve welding efficiency. Compared with traditional manual welding, the automation device of the present invention greatly improves welding efficiency. The system can automatically complete the positioning, clamping and assembly of various components, reducing manual intervention and operation time. The automated control of the entire welding process not only improves work efficiency, but also shortens the construction period of the project, effectively reducing production costs.

[0041] 3. Enhance the stability and reliability of the equipment. Through the precisely controlled shunt drive assembly, the stable operation of the external positioning assembly and the clamping assembly is guaranteed, which can effectively avoid system instability or failure caused by interference or friction between the components, greatly improving the reliability and safety of the system.

[0042] 4. Simplify the power system, reduce the difficulty of maintenance, and design the shunt drive components. A single No. 1 drive motor is used to control the operating posture of the external positioning component and the internal positioning component. Through the sliding connection of the spline shaft and the spline sleeve, the No. 2 drive motor can drive the chuck and the sliding seat to adjust stably. Avoid redundant power transmission components and complex structures. This design not only reduces the overall weight of the system, but also greatly simplifies the maintenance and repair of the equipment, and reduces the operation and maintenance costs in long-term use.

[0043] In summary, the box girder frame mobile welding device of the present invention successfully solves many problems in the prior art through optimized design and innovative technology, significantly improves welding accuracy and efficiency, enhances the stability and reliability of the equipment, and at the same time simplifies the power system and reduces maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic structural diagram of the present invention when welding a box beam frame;

[0045] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0046] Figure 3 It is a structural schematic diagram of the box girder frame;

[0047] Figure 4 It is a structural schematic diagram of the support unit in the vector tire frame;

[0048] Figure 5 A schematic diagram of the structure of the locking assembly installed in the mounting base;

[0049] Figure 6 is a detailed schematic diagram of the locking assembly;

[0050] Figure 7 It is a schematic diagram of the structure of the gantry type traveling frame, the lifting platform and the components assembled thereon;

[0051] Figure 8 It is a schematic diagram of the structure of the lifting platform and the components assembled thereon;

[0052] Fig. 9 It is a structural diagram of the matching combination of the shunt drive component, the external positioning component and the internal positioning component;

[0053] Fig.10 It is a structural schematic diagram of the matching combination of the No. 1 drive motor and the ratchet mechanism in the shunt drive assembly;

[0054] Fig.11 It is a schematic diagram of the structure of assembling the clamping component on the external positioning component;

[0055] Fig.12 It is a detailed schematic diagram of the outer positioning component and the inner positioning component;

[0056] Fig.13 It is a structural schematic diagram of the combination of the outer positioning component, the inner positioning component and the box beam frame;

[0057] Fig.14 It is a structural schematic diagram of the welding equipment installed on the external positioning component and the internal positioning component;

[0058] Fig.15 It is a structural diagram of welding equipment.

[0059] In the figure:

[0060] 1 mounting base, 11 positioning sink, 12 positioning cushion, 13 travel guide rail A;

[0061] 2 locking assembly, 21 driving shaft, 211 hand wheel, 22 driving sprocket, 23 transmission sprocket, 24 threaded ejector rod, 241 guide sink groove;

[0062] 3 gantry type traveling frame, 31 traveling wheel A, 32 guide column;

[0063] 4 lifting platform, 41 travel guide rail B, 42 travel guide rail C;

[0064] 5 external positioning assembly, 51 No. 1 traveling trolley, 511 traveling wheel B, 512 No. 1 rotating seat, 52 connecting bracket A, 521 guide rod, 53 positioning bracket A, 54 assembly slot;

[0065] 6 inner positioning assembly, 61 No. 2 traveling trolley, 611 traveling wheel C, 612 No. 2 rotating seat, 62 connecting bracket B, 63 positioning bracket B, 64 positioning bracket C, 65 positioning bracket D;

[0066] 7 shunt drive assembly, 71 No. 1 drive motor, 711 drive bevel gear A, 72 reciprocating screw A, 721 connecting shaft A, 73 reciprocating screw B, 731 connecting shaft B, 74 ratchet mechanism, 741 inner ratchet, 742 pawl, 743 leaf spring, 744 rotating sprocket, 745 drive bevel gear A;

[0067] 8 clamping assembly, 81 chuck, 811 sliding seat, 82 No. 2 driving motor, 821 driving bevel gear C, 83 transmission shaft, 831 driving bevel gear B, 832 driving bevel gear D, 84 adjusting screw, 841 driving bevel gear B, 85 spline shaft, 851 connecting shaft C, 852 driving bevel gear C, 86 spline sleeve, 861 driving bevel gear D;

[0068] 9 box beam frame, 91 bottom beam, 92 support unit, 921 longitudinal beam, 922 vertical support rod, 923 diagonal support rod, 924 sleeve, 93 reinforcement bar, 941 upper positioning bar, 942 lower positioning bar, 943 positioning slot;

[0069] 10 welding equipment, 101 robotic arm, 102 welding gun. DETAILED DESCRIPTION

[0070] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0071] Example 1

[0072] See also Figure 1-Figure 6 , Fig.15 A mobile welding device for a box beam frame includes a mounting base 1 and a locking assembly 2 evenly assembled on the mounting base 1, wherein the locking assembly 2 locks and positions the bottom structure of the box beam frame 9.

[0073] It also includes a gantry type traveling frame 3 which is assembled on the mounting base 1 and erected to the periphery of the box girder tire frame 9 , and the gantry type traveling frame 3 runs along the length direction of the mounting base 1 .

[0074] A lifting platform 4 that moves along a vertical square is mounted on the gantry-type traveling frame 3. Two groups of outer positioning components 5 and inner positioning components 6 that run along the width direction of the mounting base 1 are slidably mounted on the lifting platform 4. The two groups of outer positioning components 5 and inner positioning components 6 are symmetrically arranged along the center line in the width direction of the mounting base 1. The inner positioning components 6 and outer positioning components 5 are respectively arranged on the inner and outer sides of the box girder frame 9.

[0075] The lifting platform 4 is also equipped with a shunt drive component 7 which maintains power connection with the outer positioning component 5 and the inner positioning component 6. The power of the shunt drive component 7 is transmitted to the outer positioning component 5 and the inner positioning component 6, and the shunt drive component 7 drives the outer positioning component 5 and the inner positioning component 6 to operate independently.

[0076] The device further comprises a clamping assembly 8 , which comprises two groups of symmetrically arranged clamps 81 . The two groups of clamps 81 are respectively slidably mounted on the bottom of the two groups of outer positioning assemblies 5 and run along the width direction of the mounting base 1 .

[0077] It also includes a welding device 10 assembled on the outer positioning component 5 and the inner positioning component 6, and the welding device 10 is used to weld and assemble the various components of the box beam frame (9).

[0078] The welding equipment 10 specifically includes a robot arm 101 and a welding gun 102 mounted on the robot arm 101 . The robot arm 101 is used to adjust the position and inclination of the welding gun 102 , thereby ensuring that the welding gun 102 can accurately weld the joints of the components in the box girder frame 9 .

[0079] The cooperation between the mounting base 1 and the locking assembly 2 can lock and position the bottom structure of the box girder frame 9, so as to accurately and stably weld the various structures of the box girder frame 9 and effectively fix the box girder frame 9 processed into a finished product or a semi-finished product.

[0080] At the same time, the installation of the base 1 can ensure that the gantry type traveling frame 3 can stably travel along its own length direction on it, and cooperate with the various components assembled on the traveling frame to achieve effective welding of various structures of the box beam frame. By controlling the coordinated operation of the external positioning component 5, the internal positioning component 6 and the clamping component 8, the remaining components of the box beam frame 9 except the bottom structure can be accurately positioned, and the welding combination of various components can be achieved. The lifting platform 4 can drive the components of the welding combination to adjust the lifting posture so that they can be assembled and welded with the bottom structure.

[0081] In order to ensure that the box girder frame 9 can achieve accurate positioning and binding of the steel cage during the casting of the box girder prefabricated parts, the following technical solutions are provided.

[0082] The box beam frame 9 includes a bottom beam 91, a support unit 92, a reinforcement strip 93, an upper positioning strip 941, and a lower positioning strip 942. The bottom beam 91 includes multiple groups that are distributed in parallel and arranged along the length direction of the mounting base 1. The bottom beam 91 is locked in place by a locking assembly 2.

[0083] The support units 92 are evenly distributed along the length direction of the bottom beam 91. The support units 92 include a longitudinal beam 921, a vertical support rod 922, an oblique support rod 923, and a sleeve 924. The longitudinal beam 921 is welded to each group of bottom beams 91 and maintains a vertical distribution with the bottom beam 91. Both ends of the longitudinal beam 921 are welded with vertical support rods 922 and oblique support rods 923 that maintain a symmetrical distribution. The oblique support rods 923 are arranged on the inner side of the vertical support rods 922 and the top ends of the oblique support rods 923 and the vertical support rods 922 are welded. Multiple groups of sleeves 924 evenly arranged in the vertical direction are welded to the vertical support rods 922 and the oblique support rods 923 arranged at the same end of the longitudinal beam 921.

[0084] The reinforcement strip 93, the upper positioning strip 941, and the lower positioning strip 942 are all distributed vertically with the longitudinal beam 921. The reinforcement strip 93 and the upper positioning strip 941 are welded to the top connection of the diagonal support rod 923 and the vertical support rod 922. The upper positioning strip 941 is arranged on the inner side of the reinforcement strip 93, and the lower positioning strip 942 is welded to the longitudinal beam 921. Positioning slots 943 are evenly opened on the upper positioning strip 941 and the lower positioning strip 942.

[0085] The bottom beam 91 and the longitudinal beam 921, vertical brace rods 922 and diagonal brace rods 923 in the support unit 92 are all made of channel steel to ensure the overall structural strength of the box beam frame 9, and the sleeve 924 in the support unit 92 is made of round tube, and the inner end of the sleeve 924 is cut along the arrangement direction of the diagonal brace rods 923 to prevent the sleeve 924 from extending to the inside of the box beam frame 9 and affecting the normal assembly and binding of the steel cage.

[0086] The sleeve 924 can be slidably inserted with a steel bar of a movable length so that the steel bars distributed along the length direction of the box girder web and the corrugated pipe preset in the box girder can be positioned thereon to ensure the accuracy of its assembly and splicing.

[0087] The reinforcement strip 93, the upper positioning strip 941, and the lower positioning strip 942 are all made of angle steel and work together with the bottom beam 91 to effectively reinforce each support unit 92. The positioning slots 943 provided on the upper positioning strip 941 and the lower positioning strip 942 can be cut on the angle steel using an angle grinder.

[0088] The upper positioning strip 941 and the lower positioning strip 942 can accurately position the longitudinally distributed steel bars in the box girder to ensure their uniform arrangement and precise splicing.

[0089] The gantry-type traveling frame 3 is equipped with two groups of lifting platforms 4 distributed along the length direction of the mounting base 1, and each lifting platform 4 is equipped with an external positioning component 5, an internal positioning component 6, a shunt drive component 7 and a clamping component 8. When the gantry-type traveling frame 3 moves to the next welding station, the two groups of support units 92 can be welded and assembled on the bottom beam 91, and the reinforcement strips 93, the upper positioning strips 941, and the lower positioning strips 942 can be arranged and welded on the support units 92, which can ensure the effective welding of each section of the reinforcement strips 93, the upper positioning strips 941, and the lower positioning strips 942, and avoid the problem of the end falling due to their excessive length.

[0090] Due to the large size of the box beam, the bottom beam 91, the reinforcement strip 93, the upper positioning strip 941, and the lower positioning strip 942 are all welded together in multiple sections. After the support unit 92 is welded to the bottom beam 91, each section of the reinforcement strip 93, the upper positioning strip 941, and the lower positioning strip 942 are set up and welded together on the two sets of support units 92 welded synchronously.

[0091] The cooperation between the outer positioning component 5 and the inner positioning component 6 can accurately position the support unit 92 and the reinforcement strip 93, the upper positioning strip 941, and the lower positioning strip 942. The clamping component 8 can effectively clamp the support unit 92 welded into a whole or the longitudinal beam 921 in the support unit 92. Specifically, the clamp 81 is nested in combination at both ends of the longitudinal beam 921 to achieve clamping, and cooperates with the lifting platform 4 to drive the support unit 92 or a single longitudinal beam 921 therein to move downward and splice with the bottom beam 91.

[0092] After the components in the support unit 92 are welded to a unified whole on the outer positioning assembly 5, the inner positioning assembly 6, and the clamping assembly 8 driven by the lifting platform 4 to a high position, the components can be driven by the lifting platform 4 to move to a low position and welded to the bottom beam 91, and the welding work of each structure in the support unit 92 can be separated from the welding combination of the support unit 92 and the bottom beam 91, so as to effectively improve the welding efficiency of the box beam tire frame 9. Alternatively, the longitudinal beam 921 can be clamped by the clamping assembly 8 and driven by the lifting platform 4 to move to a low position, and then first welded to the bottom beam 91, and then the remaining structures of the support unit 92 can be welded to the welded longitudinal beam 921.

[0093] Example 2

[0094] See also Figure 5-Figure 6 In order to ensure that the locking assembly 2 can be stably assembled on the mounting base 1 and realize effective positioning of each bottom beam 91, while facilitating the operation of the locking assembly 2, the following technical solution is provided.

[0095] The mounting base 1 is provided with a plurality of positioning grooves 11 , in which positioning seats 12 are arranged. The positioning grooves 11 and the positioning seats 12 are arranged along the length direction of the mounting base 1 , and the bottom beam 91 is arranged on the positioning seats 12 .

[0096] The locking assembly 2 includes a drive shaft 21, a drive sprocket 22, and a transmission sprocket 23 and a threaded push rod 24 arranged on both sides of each positioning groove 11. The transmission sprocket 23 is rotatably installed in the mounting base 1, and the threaded push rod 24 is slidably installed in the mounting base 1 and is screwed with the axis of the transmission sprocket 23. The end of the threaded push rod 24 extends into the positioning groove 11 and is abutted against the bottom beam 91. The drive shaft 21 is rotatably installed in the mounting base 1 and is arranged along the width direction of the mounting base 1. A plurality of groups of drive sprockets 22 are fixedly connected to the drive shaft 21, which are vertically opposite to each group of drive sprockets 23. The drive sprockets 22 and the drive sprockets 23 arranged in the same vertical direction realize chain transmission through a chain. The end of the drive shaft 21 is fixedly connected to a handwheel 211 arranged on the outside of the mounting base 1.

[0097] An assembly cavity is provided in the mounting base 1 to ensure that the driving sprocket 22, the transmission sprocket 23, the threaded push rod 24 and the chain in the locking assembly 2 are stably assembled therein. When the driving shaft 21 and the driving sprocket 22 thereon are driven to operate synchronously by operating the hand wheel 211, the transmission sprockets 23 of each group can be driven to operate synchronously by the chain, the spiral directions of the threaded push rods 24 placed on both sides of the positioning groove 11 are kept in opposite arrangement, and the side walls of the threaded push rods 24 are provided with axially arranged guide grooves 241, which are kept in sliding connection with the mounting base 1, so that the threaded push rods 24 on both sides of the positioning groove 11 always keep sliding in the synchronous direction, so as to realize the clamping and positioning of the two side walls of the bottom beam 91.

[0098] Arranging multiple groups of locking components evenly distributed along the mounting base 1 can effectively position each section of the assembled and welded bottom beam 91 to ensure accurate welding processing of the box beam frame 9.

[0099] Example 3

[0100] See also Figure 1-Figure 2 , Figure 7 In order to ensure that the gantry type traveling frame 3 can stably move on the mounting base 1 and ensure that the lifting platform 4 can be assembled on the gantry type traveling frame 3 in a lifting motion, the following technical solution is provided.

[0101] Traveling guide rails A13 arranged along the length direction of the mounting base 1 are installed on both sides of the mounting base 1. The traveling guide rails A13 are distributed on both sides of the box beam tire frame 9. The bottom of the gantry type traveling frame 3 is installed on the traveling wheel A31, and the traveling wheel A31 is matched with the traveling guide rails A13.

[0102] The cooperation between the traveling guide rail A13 and the traveling wheel A31 can realize the stable travel of the gantry type traveling frame 3 along the mounting base 1. The gantry type traveling frame 3 can be equipped with traction equipment or traveling equipment, which can provide driving force for the gantry type traveling frame 3 during its operation.

[0103] A guide column 32 arranged in the vertical direction is fixedly connected to the gantry type traveling frame 3 , and both ends of the lifting platform 4 are slidably mounted on the guide column 32 .

[0104] The cooperation between the guide column 32 and the lifting platform 4 can realize the stable lifting of the lifting platform 4 in the vertical direction. A winch or screw lifting equipment matched with the lifting platform 4 can be assembled on the gantry type traveling frame 3 to drive the lifting platform 4 to lift effectively.

[0105] Example 4

[0106] See also Figure 7-10 , Figure 12-Figure 15 In order to ensure that the outer positioning assembly 5 and the inner positioning assembly 6 can be stably assembled and operated on the lifting platform 4, and to achieve effective positioning of the support unit 92 and the reinforcement bar 93, the upper positioning bar 941, and the lower positioning bar 942, the following technical solution is provided.

[0107] The lifting platform 4 is equipped with a travel guide rail B41 and a travel guide rail C42 arranged along the length direction of the mounting base 1, and the travel guide rail C42 is arranged on the inner side of the travel guide rail B41.

[0108] The external positioning component 5 includes a No. 1 traveling trolley 51, a connecting bracket A52, a positioning bracket A53 fixed to the connecting bracket A52, and an assembly slot 54. The No. 1 traveling trolley 51 is equipped with a traveling wheel B511 that is compatible with the traveling guide rail B41. The connecting bracket A52 is fixed to the bottom of the traveling trolley. The positioning bracket A53 is arranged on the top of the assembly slot 54 and abuts against the reinforcement strip 93 for positioning. The assembly slot 54 covers the periphery of the support rod and abuts against the vertical support rod 922 and the sleeve 924 for positioning.

[0109] The combination of the traveling wheel B511 and the traveling guide rail B41 can ensure that the No. 1 traveling trolley 51 in the external positioning component 5 can move stably on the lifting platform 4, and the setting of the connecting bracket A52 can ensure that the positioning bracket A53 and the assembly slot 54 are stably assembled on the No. 1 traveling trolley 51. The assembly slot 54 is assembled and welded by channel steel and angle steel. The vertical support rod 922 is placed therein to effectively position it, and the horizontally arranged multi-layer angle steel can effectively position each sleeve 924 to ensure that the sleeve 924 is stably welded on the vertical support rod 922 and the diagonal support rod 923. The assembly slot is designed to be open on the side facing the diagonal support rod 923 to avoid spatial movement interference with the diagonal support rod 923.

[0110] The part where the positioning bracket A53 and the reinforcement strip 93 are in contact is provided with two sections, which are arranged on both sides of the assembly groove respectively, so as to make room for the connection position between the reinforcement strip 93 and the support unit 92 and facilitate the welding combination of the two. With the joint action of the positioning bracket A53 and the vertical support rod 922, the reinforcement strip 93 can be accurately positioned.

[0111] The inner positioning assembly 6 includes a No. 2 traveling trolley 61, a connecting bracket B62, and a positioning bracket B63, a positioning bracket C64, and a positioning bracket D65 fixed to the connecting upper B and arranged in sequence from top to bottom. The No. 2 traveling trolley 61 is equipped with a traveling wheel C611 adapted to the traveling guide rail C42. The positioning bracket B63 abuts against the upper positioning bar 941 for positioning, the positioning bracket C64 abuts against the side wall of the diagonal support rod 923 for positioning, and the positioning bracket D65 abuts against the lower positioning bar 942 for positioning.

[0112] The combination of the traveling wheel C611 and the traveling guide rail C42 can ensure that the No. 2 traveling trolley 61 in the inner positioning assembly 6 can move stably on the lifting platform 4, and the setting of the connecting bracket B62 can ensure that the positioning bracket B63, positioning bracket C64, and positioning bracket D65 are stably assembled on the No. 2 traveling trolley 61, and they are all assembled and welded with channel steel.

[0113] The positioning bracket C64 is in contact with the side wall of the diagonal support rod 923 and cooperates with the assembly slot 54 to weld the vertical support rod 922, the diagonal support rod 923 and the sleeve 924 into a unified whole and weld them to the bottom longitudinal beam 921.

[0114] The parts where the positioning bracket B63 and the positioning bracket D65 are in contact with the upper positioning bar 941 and the lower positioning bar 942 are each provided with two sections, and are respectively arranged on both sides of the positioning bracket C64, so as to make room for the connection position between the support unit 92 and the upper positioning bar 941 and the lower positioning bar 942, so as to facilitate welding thereof to the support unit 92.

[0115] The robot arm 101 in the welding equipment 10 is fixedly installed on the connecting bracket A52 of the external positioning component 5 or the connecting bracket B62 of the internal positioning component 6 to ensure that the robot arm 101 can cooperate with the welding gun 102 installed thereon to accurately weld the connection positions of various components in the box girder frame 9.

[0116] It should also be noted that since the structure of the box girder frame 9 is relatively complex and the welding points are numerous and scattered, when the welding equipment 10 welds the box girder frame 9, the various parts can also be welded and combined with the help of a manual handheld welding gun. Personnel can move on the outside of the gantry-type traveling frame 3 and the inside of the box girder frame 9, and use the welding gun to weld and combine the various welding points.

[0117] In order to ensure that the diverter drive assembly 7 can be stably assembled on the lifting platform 4 and realize the power connection between the diverter drive assembly 7 and the outer positioning assembly 5 and the inner positioning assembly 6, the following technical solution is provided.

[0118] The shunt drive assembly 7 includes a No. 1 drive motor 71 and a reciprocating screw A72 and a reciprocating screw B73 arranged along the width direction of the mounting base 1. The No. 1 traveling trolley 51 in the two groups of external positioning assemblies 5 is screwed with a reciprocating screw A72, and the two groups of reciprocating screws A72 are coaxially fixedly connected through the connecting shaft A721. The No. 2 traveling trolley 61 in the two groups of internal positioning assemblies 6 is screwed with a reciprocating screw B73, and the two groups of reciprocating screws B73 are coaxially fixedly connected through the connecting shaft B731. The reciprocating screws A72 and B73 are both rotatably installed on the lifting platform 4, and the No. 1 drive motor 71 is fixedly installed on the lifting platform 4 and is power-connected to the connecting shafts A721 and B731.

[0119] When the No. 1 driving motor 71 is running, it can drive the connecting shaft A721 or the connecting shaft B731 to operate, and then drive the corresponding reciprocating screw A72 or the reciprocating screw B73 to operate stably. The reciprocating screws A72 arranged on both sides of the connecting shaft A721 remain arranged in reverse, and the reciprocating screws B73 arranged on both sides of the connecting shaft B731 also remain arranged in reverse, so as to realize that the two groups of No. 1 traveling trolleys 51 or the two groups of No. 2 trolleys always maintain constant speed and reverse operation.

[0120] A No. 1 rotating seat 512 and a No. 2 rotating seat 612 are fixedly connected to the No. 1 traveling trolley 51 and the No. 2 traveling trolley 61 respectively. The No. 1 rotating seat 512 can be matched with the reciprocating screw A72, and the No. 2 rotating seat 612 can be matched with the reciprocating screw B73 to drive the No. 1 traveling trolley 51 and the No. 2 traveling trolley 61 to move stably.

[0121] The first and second reciprocating screws are provided with two sections of spiral guide grooves which are closed at both ends. This structural feature can drive the first and second traveling trolleys 51 and 61 to realize periodic reciprocating operation within a specific travel range while maintaining unidirectional continuous operation.

[0122] In order to ensure that the No. 1 driving motor 71 can realize the diversion transmission of power to drive the connecting shaft A721 or the connecting shaft B731 to operate independently, and then realize the posture adjustment of the outer positioning component 5 and the inner positioning component 6, the following technical solution is provided.

[0123] The diversion drive assembly 7 includes two groups of ratchet mechanisms 74 that are arranged in reverse, and the ratchet mechanisms 74 include nested and meshed inner ratchets 741 and clamping claws. The inner ratchets 741 in the two groups of ratchet mechanisms 74 are rotatably installed on the lifting platform 4 and are respectively arranged on the peripheries of the connecting shaft A721 and the connecting shaft B731. The ratchet pawls 742 in the two groups of ratchet mechanisms 74 are respectively rotatably installed on the peripheries of the connecting shaft A721 and the connecting shaft B731. The connecting shaft A721 and the connecting shaft B731 are both equipped with spring leaves 743 that are kept in contact with the corresponding ratchet pawls 742. The peripheries of the two groups of inner ratchets 741 are provided with rotating sprockets 744. The two groups of rotating sprockets 744 realize chain transmission through chains, and a transmission bevel gear A745 is fixedly connected to one group of the inner ratchets 741, and a driving bevel gear A711 that is meshed with the transmission bevel gear A745 is fixedly connected to the output shaft of the No. 1 drive motor 71.

[0124] The arrangement of the reed 743 in the ratchet mechanism 74 can push the pawl 742 to always expand outward and engage with the ratchet teeth on the inner side of the corresponding inner ratchet 741 .

[0125] When the No. 1 driving motor 71 is running, the corresponding inner ratchet 741 is driven to operate stably through the combination of the driving bevel gear A711 and the transmission bevel gear A745, and then the two sets of inner ratchet 741 are driven to operate synchronously through the combination of the rotating sprocket 744 and the chain.

[0126] Since the two groups of ratchet mechanisms 74 are arranged in reverse, when the driving motor rotates forward, the power of one group of ratchet mechanisms 74 can be transmitted separately to the corresponding pawl 742, and then the power is transmitted to the connecting shaft A721 to drive the two groups of reciprocating screws A72 to operate stably, and drive the two groups of external positioning components 5 to reciprocate within a specific stroke range. When the two groups of external positioning components 5 run to the inner end of the stroke, the positioning bracket A53 and the assembly slot 54 thereon can be matched with the box girder frame 9. When running to the outer end of the stroke, the positioning bracket A53, the assembly slot 54 and the box girder frame 9 can be completely separated.

[0127] When the driving motor reverses, the power of the other ratchet mechanism 74 can be transmitted separately to the corresponding pawl 742, and then the power can be transmitted to the connected shaft B731 to drive the two groups of reciprocating screws B73 to operate stably, and drive the two groups of internal positioning components 6 to reciprocate within a specific stroke range. When the two groups of internal positioning components 6 run to the outer end of the stroke, the internal positioning components 6 can be matched with the box girder frame 9. When running to the inner end of the stroke, the internal positioning components 6 can be completely separated from the box girder frame 9.

[0128] Example 5

[0129] See also Figure 8 , Fig.11 In order to ensure that the clamp 81 in the clamping assembly 8 can stably slide at the bottom of the outer positioning assembly 5 and achieve effective clamping and positioning of the two ends of the longitudinal beam 921, the following technical solution is provided.

[0130] A sliding seat 811 is fixedly connected to the chuck 81 and is slidably mounted on the bottom of the connecting bracket A52; the clamping assembly 8 also includes a No. 2 driving motor 82, a transmission shaft 83, and an adjusting screw 84. The adjusting screw 84 is rotatably mounted on the bottom of the connecting bracket A52 and is rotationally connected to the sliding seat 811. The transmission shaft 83 is rotatably mounted on the connecting bracket and is arranged in the vertical direction. A driving bevel gear B831 is fixedly connected to the bottom end of the transmission shaft 83, and a driving bevel gear B841 is fixedly connected to the end of the adjusting screw 84 and is meshed with the driving bevel gear B831. The No. 2 driving motor 82 is fixedly mounted on the lifting platform 4 and maintains a power connection with the transmission shaft 83.

[0131] A guide rod 521 arranged along the width direction of the mounting base 1 is fixedly connected to the bottom of the connecting bracket A52 . The guide rod 521 is slidably connected with the sliding seat 811 to enable the sliding seat 811 and the clamp 81 to slide effectively along the width direction of the mounting base 1 .

[0132] When the No. 2 driving motor 82 is running, it drives the transmission shaft 83 assembled on the two groups of external positioning components 5 to operate stably, and then drives the corresponding two groups of adjusting screws 84 to operate stably through the combination of driving bevel gear B831 and transmission bevel gear B841, and then drives the corresponding sliding seat 811 and the chuck 81 to slide stably. When the chuck 81 extends out of the inner side of the connecting bracket A52, it can be nested and connected with the longitudinal beam 921 in the support unit 92, thereby realizing the clamping and positioning of the support unit 92.

[0133] In order to ensure that the power of the second drive motor 82 can be stably transmitted to the transmission shaft 83 assembled on the external positioning component 5, and at the same time will not cause interference to the power transmission when the external positioning component 5 is running, the following technical solution is provided.

[0134] The clamping assembly 8 also includes two groups of spline shafts 85 and two groups of spline sleeves 86. The spline shafts 85 are rotatably installed on the lifting platform 4 and are arranged along the width direction of the mounting base 1. The two groups of spline shafts 85 are coaxially fixedly connected by a connecting shaft C851. A transmission bevel gear C852 is fixedly connected to the connecting shaft C851. A driving bevel gear C821 that is meshed with the transmission bevel gear C852 is fixedly connected to the output shaft of the second driving motor 82.

[0135] The spline sleeve 86 is rotatably mounted on the No. 1 traveling trolley 51 and is slidably connected to the spline shaft 85 on the corresponding side. The end of the spline sleeve 86 is fixedly connected to a driving bevel gear D861, and the top end of the transmission shaft 83 is fixedly connected to a transmission bevel gear D832 that is meshed with the driving bevel gear D861.

[0136] The connecting shaft C851 runs through the No. 2 traveling trolley 61 to avoid spatial motion interference between the two. The power of the No. 2 driving motor 82 drives the connecting shaft C851 and the two sets of spline shafts 85 to operate stably through the combination of the driving bevel gear C821 and the transmission bevel gear C852. During the operation of the No. 1 traveling trolley 51, the spline sleeve 86 always maintains a sliding connection with the corresponding spline shaft 85, thereby stably transmitting the power of the spline shaft 85 to the spline sleeve 86, and driving the transmission shaft 83 to operate stably through the combination of the driving bevel gear D861 and the transmission bevel gear D832, thereby transmitting power to the adjusting screw 84 and driving the sliding seat 811 and the chuck 81 to operate stably.

[0137] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0138] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mobile welding device for a box beam frame, characterized in that: It comprises a mounting base (1) and a locking assembly (2) evenly assembled on the mounting base (1), wherein the locking assembly (2) locks and positions the bottom structure of the box beam frame (9); It also includes a gantry-type traveling frame (3) mounted on the mounting base (1) and erected to the periphery of the box beam tire frame (9), wherein the gantry-type traveling frame (3) runs along the length direction of the mounting base (1); The gantry-type traveling frame (3) is equipped with a lifting platform (4) that moves along a vertical square. Two groups of outer positioning components (5) and inner positioning components (6) that move along the width direction of the installation base (1) are slidably installed on the lifting platform (4). The two groups of outer positioning components (5) and inner positioning components (6) are symmetrically arranged along the center line of the width direction of the installation base (1). The inner positioning components (6) and outer positioning components (5) are respectively arranged on the inner and outer sides of the box beam frame (9); The lifting platform (4) is also equipped with a flow-dividing driving component (7) which is in power connection with the outer positioning component (5) and the inner positioning component (6); the power of the flow-dividing driving component (7) is diverted and transmitted to the outer positioning component (5) and the inner positioning component (6); and the flow-dividing driving component (7) drives the outer positioning component (5) and the inner positioning component (6) to operate independently; It also includes a clamping assembly (8), the clamping assembly (8) including two groups of symmetrically arranged clamping heads (81), the two groups of clamping heads (81) are respectively slidably mounted on the bottom of the two groups of external positioning assemblies (5) and run along the width direction of the mounting base (1); It also includes welding equipment (10) mounted on the outer positioning assembly (5) and the inner positioning assembly (6), and the welding equipment (10) is used to weld and assemble the various components of the box beam frame (9).

2. The mobile welding equipment for box beam frame according to claim 1 is characterized in that: The box beam frame (9) comprises a bottom beam (91), a support unit (92), a reinforcement strip (93), an upper positioning strip (941), and a lower positioning strip (942); the bottom beam (91) comprises a plurality of groups of parallel distributed and arranged along the length direction of the mounting base (1); the bottom beam (91) is locked and positioned by a locking assembly (2); The support units (92) are evenly distributed along the length direction of the bottom beam (91), and the support units (92) include longitudinal beams (921), vertical support rods (922), diagonal support rods (923), and sleeves (924). The longitudinal beams (921) are welded to each group of the bottom beams (91) and are vertically distributed with the bottom beams (91). Both ends of the longitudinal beams (921) are welded with vertical support rods (922) and diagonal support rods (923) that are symmetrically distributed. The diagonal support rods (923) are arranged on the inner side of the vertical support rods (922) and the top ends of the diagonal support rods (923) and the vertical support rods (922) are welded. Multiple groups of sleeves (924) evenly distributed along the vertical direction are welded to the vertical support rods (922) and the diagonal support rods (923) arranged at the same end of the longitudinal beam (921); The reinforcement strip (93), the upper positioning strip (941), and the lower positioning strip (942) are all distributed vertically with the longitudinal beam (921); the reinforcement strip (93) and the upper positioning strip (941) are welded to the top connection of the diagonal support rod (923) and the vertical support rod (922); the upper positioning strip (941) is arranged on the inner side of the reinforcement strip (93); the lower positioning strip (942) is welded to the longitudinal beam (921); and positioning slots (943) are evenly provided on the upper positioning strip (941) and the lower positioning strip (942).

3. The mobile welding equipment for box beam frame according to claim 2 is characterized in that: The mounting base (1) is provided with a plurality of positioning grooves (11), the positioning grooves (11) are provided with positioning cushion seats (12), the positioning grooves (11) and the positioning cushion seats (12) are arranged along the length direction of the mounting base (1), and the bottom beam (91) is arranged on the positioning cushion seats (12); The locking assembly (2) comprises a driving shaft (21), a driving sprocket (22), and a transmission sprocket (23) and a threaded push rod (24) arranged on both sides of each positioning groove (11); the transmission sprocket (23) is rotatably mounted in the mounting base (1); the threaded push rod (24) is slidably mounted in the mounting base (1) and is kept in rotational connection with the axis of the transmission sprocket (23); the end of the threaded push rod (24) extends into the positioning groove (11) and is connected to the bottom beam (91). The drive shaft (21) is rotatably mounted in the mounting base (1) and arranged along the width direction of the mounting base (1). The drive shaft (21) is fixedly connected with a plurality of groups of drive sprockets (22) which are respectively vertically opposite to the groups of drive sprockets (23). The drive sprockets (22) and the drive sprockets (23) arranged in the same vertical direction realize chain transmission through chains. The end of the drive shaft (21) is fixedly connected with a hand wheel (211) arranged outside the mounting base (1).

4. The mobile welding equipment for box beam frame according to claim 1, characterized in that: Travel guide rails A (13) arranged along the length direction of the installation base (1) are installed on both sides of the installation base (1), and the travel guide rails A (13) are distributed on both sides of the box beam tire frame (9). The bottom of the gantry type travel frame (3) is installed with travel wheels A (31), and the travel wheels A (31) are matched with the travel guide rails A (13); A guide column (32) arranged in a vertical direction is fixedly connected to the gantry-type traveling frame (3), and both ends of the lifting platform (4) are slidably mounted on the guide column (32).

5. The mobile welding equipment for box beam frame according to claim 2 is characterized in that: The lifting platform (4) is equipped with a travel guide rail B (41) and a travel guide rail C (42) arranged along the length direction of the mounting base (1), and the travel guide rail C (42) is arranged on the inner side of the travel guide rail B (41); The external positioning assembly (5) comprises a No. 1 traveling trolley (51), a connecting bracket A (52), a positioning bracket A (53) fixedly connected to the connecting bracket A (52), and an assembly slot (54); the No. 1 traveling trolley (51) is equipped with a traveling wheel B (511) adapted to the traveling guide rail B (41); the connecting bracket A (52) is fixedly connected to the bottom of the traveling trolley; the positioning bracket A (53) is arranged at the top of the assembly slot (54) and abuts against the reinforcing strip (93) for positioning; the assembly slot (54) covers the periphery of the supporting rod and abuts against the vertical support rod (922) and the sleeve (924) for positioning; The inner positioning assembly (6) comprises a second traveling trolley (61), a connecting bracket B (62), and a positioning bracket B (63), a positioning bracket C (64), and a positioning bracket D (65) fixedly connected to the connecting bracket B and arranged in sequence from top to bottom. The second traveling trolley (61) is equipped with a traveling wheel C (611) adapted to the traveling guide rail C (42). The positioning bracket B (63) abuts against the upper positioning bar (941) for positioning, the positioning bracket C (64) abuts against the side wall of the diagonal support rod (923) for positioning, and the positioning bracket D (65) abuts against the lower positioning bar (942) for positioning.

6. The mobile welding equipment for box beam frame according to claim 5, characterized in that: The diversion drive assembly (7) comprises a No. 1 drive motor (71) and a reciprocating screw A (72) and a reciprocating screw B (73) arranged along the width direction of the mounting base (1); the No. 1 traveling trolley (51) in the two groups of the external positioning assemblies (5) is screwed with a reciprocating screw A (72); the two groups of reciprocating screws A (72) are coaxially fixedly connected via a connecting shaft A (721); the No. 2 traveling trolley (61) in the two groups of the internal positioning assemblies (6) is screwed with a reciprocating screw B (73); the two groups of reciprocating screws B (73) are coaxially fixedly connected via a connecting shaft B (731); the reciprocating screws A (72) and the reciprocating screws B (73) are rotatably mounted on the lifting platform (4); the No. 1 drive motor (71) is fixedly mounted on the lifting platform (4) and is power-connected to the connecting shaft A (721) and the connecting shaft B (731).

7. The mobile welding equipment for box beam frame according to claim 6, characterized in that: The flow diversion drive assembly (7) comprises two sets of ratchet mechanisms (74) arranged in opposite directions, the ratchet mechanisms (74) comprising inner ratchets (741) and clamping claws which are nested and meshed with each other, the inner ratchets (741) in the two sets of ratchet mechanisms (74) are rotatably mounted on the lifting platform (4) and are respectively arranged on the peripheries of the connecting shaft A (721) and the connecting shaft B (731), the ratchet claws (742) in the two sets of ratchet mechanisms (74) are respectively rotatably mounted on the connecting shaft A (721) and the connecting shaft B (731). ), the connecting shaft A (721) and the connecting shaft B (731) are both equipped with a spring sheet (743) that is in contact with the corresponding ratchet pawl (742), the peripheries of the two groups of inner ratchets (741) are both provided with a rotating sprocket (744), and the two groups of rotating sprockets (744) realize chain transmission through chains, one group of the inner ratchets (741) is fixedly connected with a transmission bevel gear A (745), and the output shaft of the first driving motor (71) is fixedly connected with a driving bevel gear A (711) that is in mesh with the transmission bevel gear A (745).

8. The mobile welding equipment for box beam frame according to claim 5, characterized in that: The chuck (81) is fixedly connected to a sliding seat (811) which is slidably mounted on the bottom of the connecting bracket A (52); the clamping assembly (8) also includes a second driving motor (82), a transmission shaft (83), and an adjusting screw (84); the adjusting screw (84) is rotatably mounted on the bottom of the connecting bracket A (52) and is rotationally connected to the sliding seat (811); the transmission shaft (83) is rotatably mounted on the connecting bracket and is arranged in a vertical direction; the bottom end of the transmission shaft (83) is fixedly connected to a driving bevel gear B (831); the end of the adjusting screw (84) is fixedly connected to a driving bevel gear B (841) which is meshed with the driving bevel gear B (831); the second driving motor (82) is fixedly mounted on the lifting platform (4) and is power-connected to the transmission shaft (83).

9. The mobile welding equipment for box beam frame according to claim 8, characterized in that: The clamping assembly (8) further comprises two groups of spline shafts (85) and two groups of spline sleeves (86), wherein the spline shafts (85) are rotatably mounted on the lifting platform (4) and arranged along the width direction of the mounting base (1), and the two groups of spline shafts (85) are coaxially fixedly connected via a connecting shaft C (851), a transmission bevel gear C (852) is fixedly connected to the connecting shaft C (851), and a driving bevel gear C (821) meshing with the transmission bevel gear C (852) is fixedly connected to the output shaft of the second driving motor (82); The spline sleeve (86) is rotatably mounted on the first traveling trolley (51) and is slidably plugged with the spline shaft (85) on the corresponding side. The end of the spline sleeve (86) is fixedly connected to a driving bevel gear D (861). The top end of the transmission shaft (83) is fixedly connected to a transmission bevel gear D (832) that is meshed with the driving bevel gear D (861).

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