Welding equipment and welding method for building prefabricated parts

Abstract

The invention relates to the technical field of building prefabricated part welding, in particular to welding equipment and a welding method for building prefabricated parts, and the welding equipment comprises a movable rack, a fixed plate, a guide rail unit, a connecting assembly, a welding assembly, a driving assembly and a liquid supply assembly; wherein the movable rack comprises a base, a vertical plate and a lifting sleeve, the vertical plate is fixed to the base, the lifting sleeve is arranged on the vertical plate in a sliding and sleeving mode, the fixed plate is fixed to the side face of the lifting sleeve, and a welding machine is installed on the base. The moving function is integrated, a traditional fixed type welding device structure is replaced, a large building prefabricated part does not need to be manually moved to welding equipment, the stability and reliability of the welding effect are guaranteed through the innovative design, the operation process is greatly simplified, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding of building prefabricated components, in particular to welding equipment and a welding method for building prefabricated components. Background Art

[0002] During the production process of prefabricated building components with metal structures, welding equipment is required to weld the prefabricated components.

[0003] After searching, the patent with announcement number CN117773428B discloses a welding device for the production of prefabricated building components, and the patent with announcement number CN222154401U discloses a welding device for the production of prefabricated building components. The above two technical solutions both use fixed welding equipment. When welding the prefabricated building components, the staff needs to transfer the prefabricated building components to the welding equipment and then perform welding. This operation method is very troublesome for prefabricated columnar metal parts with large volume, because the large-volume prefabricated columnar metal parts have high weight and need to be transferred with the help of lifting equipment such as overhead cranes. Since the process of transferring and positioning prefabricated components is cumbersome and time-consuming, the efficiency of fixed welding equipment in actual production is affected to a certain extent, especially in large-scale production scenarios. This low efficiency may lead to an extension of the production cycle and an increase in cost. In addition, fixed welding equipment usually occupies a large fixed space, which to a certain extent limits the flexibility and scalability of the production line.

[0004] Based on this, the present invention discloses a welding device and a welding method for building prefabricated components. Summary of the invention

[0005] In order to solve the problems raised in the background technology, the present invention provides a welding device for building prefabricated components, which includes a mobile frame, a fixed plate, a guide rail unit, a connecting assembly, a welding assembly, a driving assembly and a liquid supply assembly; The mobile frame includes a base, a vertical plate and a lifting sleeve, the vertical plate is fixed on the base, the lifting sleeve sliding sleeve is arranged on the vertical plate, the fixed plate is fixed on the side of the lifting sleeve, and a welding machine is installed on the base; The guide rail unit comprises a first guide rail and a second guide rail, the first guide rail and the second guide rail together form an annular structure, a slide seat is slidably arranged on the first guide rail, a first fixing frame is fixed on the first guide rail, the first guide rail and the second guide rail can be detachably assembled, a liquid supply pipe is fixed on the first guide rail and the second guide rail, and a plurality of centering structures are arranged on the first guide rail and the second guide rail; Wherein, the first guide rail and the fixed plate are connected via a connecting assembly; Wherein, the welding assembly is arranged at an end of the first fixing frame away from the first guide rail, the welding assembly includes a welding gun, and the welding gun is connected to the welding machine; Wherein, the driving assembly is arranged at an end of the first fixing frame away from the first guide rail, and is used to drive the slide to move; The liquid supply assembly is arranged on the lifting sleeve of the mobile frame, and the liquid supply assembly includes a liquid storage tank, and the liquid storage tank stores oil, and the two liquid supply pipes are connected to the liquid storage tank through a hose; As a further improvement of the present technical solution, the centering structure includes an outer cylinder, a sliding plug and a centering rod. The sliding plug is sealingly and slidingly connected inside the outer cylinder, and the sliding plug and the inner surface of the outer cylinder are connected by a first spring. One end of the centering rod is connected to the sliding plug, and the other end extends to the outside of the outer cylinder. The centering rod is slidingly connected to the outer cylinder, and the outer cylinder and the corresponding liquid supply pipe are connected by a connecting pipe.

[0006] As a further improvement of the present technical solution, the connecting assembly includes a through-opening, a connecting frame, a fixing rod, a flexible sleeve and two limit plates, the through-opening is opened on the fixing plate, one end of the connecting frame is fixed on the first guide rail, and the other end extends toward the fixing plate, the fixing rod is fixed to the end of the connecting frame away from the first guide rail, and the fixing rod is placed in the through-opening, the flexible sleeve and the two limit plates are fixedly mounted on the fixing rod, the flexible sleeve is located inside the through-opening, the two limit plates are respectively located on the upper and lower sides of the fixing plate, and each of the limit plates is in contact with the fixing plate.

[0007] As a further improvement of the technical solution, the welding assembly further comprises a linear adjustment member, a movable seat and a mounting frame, wherein the linear adjustment member is fixed to an end of the first fixing frame away from the first guide rail, the movable seat is arranged on the linear adjustment member, the mounting frame is fixed to the top surface of the movable seat, and the welding gun is mounted on the mounting frame; The linear adjustment member comprises an assembly frame, a screw rod and a knob. The screw rod is rotatably assembled on the assembly frame, the moving seat is threadedly sleeved on the screw rod, and the moving seat is slidably assembled on the assembly frame. The knob is installed at one end of the screw rod.

[0008] As a further improvement of the present technical solution, the driving assembly includes a first connecting member, a wheel frame, a driving wheel and a motor. The first connecting member is fixed to an end of the first fixed frame away from the first guide rail, the wheel frame is fixed to an end of the first connecting member away from the first fixed frame, the driving wheel is rotatably assembled on the wheel frame, the motor is mounted on the wheel frame, and the output shaft of the motor is connected to the driving wheel.

[0009] As a further improvement of the present technical solution, the first connecting member includes a cylinder body 1 and a rod body 1, the cylinder body 1 is fixed to the side of the first fixed frame, the rod body 1 is slidably arranged in the cylinder body 1, one end of the rod body 1 extends to the outside of the cylinder body 1 and is fixedly connected to the wheel frame, and the cylinder body 1 and the rod body 1 are connected by a second spring.

[0010] As a further improvement of the present technical solution, the liquid supply assembly also includes an electric push cylinder and a sliding plate. The electric push cylinder is installed on the top surface of the liquid storage tank. The sliding plate is sealingly and slidingly connected to the inside of the liquid storage tank. The telescopic end of the electric push cylinder is fixedly connected to the sliding plate.

[0011] As a further improvement of the technical solution, a clamping assembly for clamping the connecting frame is provided on the fixing plate, and the clamping assembly includes a second fixing frame, a second connecting member, a clamping plate, a mounting tube and a pressure triggering structure, the second fixing frame is fixed to the top surface of the fixing plate, the second connecting member is fixed to the second fixing frame, the clamping plate is fixed to the bottom end of the second connecting member, and the clamping plate is arranged opposite to the connecting frame, one end of the mounting tube is connected to the liquid storage tank, and the pressure triggering structure is arranged inside the mounting tube; The second connecting member includes a second cylinder body and a second rod body, the second cylinder body is fixed to the side of the second fixing frame, the second rod body is slidably arranged in the second cylinder body, one end of the second rod body extends to the outside of the second cylinder body and is fixedly connected to the clamping plate, the second cylinder body and the second rod body are connected by a third spring, and the other end of the mounting tube is connected to the second cylinder body; The pressure trigger structure includes a bracket, a blocking block and a pressure-boosting spring. The bracket is fixed in a mounting tube and is provided with a through opening. The blocking block is arranged opposite to the through opening. The blocking block and the bracket are connected via a pressure-boosting spring.

[0012] As a further improvement of the present technical solution, a locking assembly is provided on the fixed plate, and the locking assembly includes a connecting rod, a rack, a gear, a rotating shaft and a one-way locking structure. One end of the connecting rod is fixedly connected to the second rod body, and the other end is fixedly connected to the rack. The rotating shaft is rotatably assembled on the second fixed frame, the gear fixed sleeve is arranged on the rotating shaft, and the gear and the rack are meshed with each other. The one-way locking structure is arranged on the second fixed frame, and the one-way locking structure acts on the rotating shaft to provide a one-way locking effect on the rotating shaft.

[0013] The present invention also provides a welding method of a welding device for building prefabricated components, comprising the following steps: Step 1: Push the mobile frame to the side of the prefabricated building component, adjust the position, splice the first guide rail and the second guide rail into a ring structure, sleeve it on the component, and use the positioning structure to adjust it to a coaxial state; Step 2: Start the electric push cylinder, push the centering rod to press the component through the oil, and at the same time, the pressing assembly works, the pressing plate fixes the connecting frame, and the one-way locking assembly ensures that the pressing state is not reset; Step 3: Start the welding machine and the motor, and the welding gun moves along the surface of the component with the driving wheel to automatically complete the welding; Step 4: As needed, adjust the height of the first guide rail and the second guide rail through the lifting sleeve, and weld different positions of the component; Step 5. After welding is completed, turn off the equipment, remove the guide rails, move the frame, and complete the welding operation.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The welding equipment proposed in the present invention integrates a mobile function, replacing the traditional fixed welding device structure. There is no need to manually move large prefabricated building components to the welding equipment. This innovative design not only ensures the stability and reliability of the welding effect, but also greatly simplifies the operation process and improves work efficiency. The motor drives the driving wheel to press and move along the surface of the prefabricated building component, driving the welding gun to automatically weld around the component, realizing the automation and flexibility of the welding process, effectively reducing labor costs, and improving the work efficiency and safety of the construction site; 2. By setting up several centering structures, the guide rail assembly (composed of the first guide rail and the second guide rail) of the annular structure can be quickly and accurately positioned to a state coaxial with the prefabricated building component. In this process, the start of the electric push cylinder drives the sliding plate to move downward, effectively using the oil to transmit force, driving multiple centering rods to move synchronously toward the center of the annular structure until they are in close contact with the outer surface of the prefabricated building component, ensuring the coaxiality of the guide rail and the component. This design not only simplifies the cumbersome steps of traditional manual adjustment and improves positioning accuracy and efficiency, but also enables the guide rail to fit closely and move around the outer circumference of the prefabricated building component, thereby ensuring the stability and uniformity of the welding gun during welding, greatly improving welding quality and operating efficiency; 3. During the centering process, the first guide rail and the second guide rail can be slightly displaced to adapt to the actual shape and position of the prefabricated building components, thereby ensuring that the annular structure can be accurately coaxial with the prefabricated building components. The matching design of the fixing rod and the through-hole, as well as the application of the flexible collar and the limit plate, effectively limit the movement range of the fixing rod, prevent it from shaking or moving in unexpected directions, and ensure stability and safety during the welding process; 4. The clamping assembly realizes highly stable fixation of the first guide rail and the second guide rail during the welding process through precise mechanical linkage and oil pressure control. In the centering adjustment stage, the oil first fills the outer cylinder and the connecting pipeline to ensure the stable movement and positioning of the centering rod. As the sliding plate moves further downward, the oil pressure gradually increases until it overcomes the elastic force of the booster spring, pushing the block to move, allowing the oil to enter the installation tube and act on the second rod body, thereby driving the clamping plate to press the connecting plate downward. This process not only realizes the firm fixation of the first guide rail and the second guide rail, but also ensures their precise coaxiality with the prefabricated building components. The clamping assembly and the liquid supply action are performed synchronously to achieve a linkage effect without the need to set up a separate power source; 5. The one-way locking assembly uses a sophisticated mechanical linkage design to ensure that after the rod body 2 drives the clamping plate to move downward and clamp the connecting frame, it can maintain this state stably to prevent the clamping plate from moving up and resetting. This function is achieved by driving the gear to rotate through the rack, thereby driving the rotating shaft to rotate, and using the one-way locking structure to lock the rotating shaft in one direction. The one-way locking structure allows the rotating shaft to rotate in only one direction, thereby ensuring that the downward movement of the rod body 2 is irreversible, effectively preventing the clamping plate from loosening due to unexpected factors, and ensuring the continuous clamping effect of the clamping plate on the connecting frame. This design not only improves the stability of the first guide rail and the second guide rail during welding, but also enhances the reliability and safety of the entire welding equipment. By ensuring that the clamping plate always remains in a clamped state, the assembly provides a stable foundation for welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention when performing welding operations; Figure 3 is a schematic diagram of the structure of the guide rail assembly; Figure 4 is a schematic cross-sectional structural diagram of a first guide rail; Figure 5 is a schematic diagram of the connection structure between the first guide rail and the second guide rail; Figure 6 is a schematic diagram of the structure of the first fixing frame, the welding assembly and the driving assembly; Figure 7 is a schematic cross-sectional structural diagram of a first fixing frame, a welding assembly and a driving assembly; Figure 8 It is a schematic diagram of the structure of the fixing plate, the connecting frame, the connecting assembly, the pressing assembly and the locking assembly; Fig. 9 for Figure 8 A magnified view of the structure at center A; Fig.10It is a schematic cross-sectional view of the fixing plate, the connecting frame, the connecting assembly, the pressing assembly and the locking assembly; Fig.11 It is a schematic diagram of the cross-sectional structure of the liquid storage tank; Fig.12 for Fig.11 A magnified view of the structure at point B.

[0016] The meaning of each number in the figure is: 1. Mobile rack; 2. Fixed plate; 31. First guide rail; 32. Second guide rail; 33. Sliding seat; 34. First fixed frame; 41. Outer cylinder; 42. Sliding plug; 43. Centering rod; 44. First spring; 45. Liquid supply pipe; 46. Connecting pipe; 51. Connecting frame; 52. Fixed rod; 53. Flexible collar; 54. Limiting plate; 61. Linear adjustment member; 62. Mobile seat; 63. Welding gun; 64. Installation Mounting frame; 71. first connecting member; 72. wheel frame; 73. driving wheel; 74. motor; 81. liquid storage tank; 82. electric push cylinder; 83. sliding plate; 84. hose; 91. second fixing frame; 92. second connecting member; 93. clamping plate; 94. mounting tube; 95. pressure trigger structure; 101. connecting rod; 102. rack; 103. rotating shaft; 104. gear; 105. one-way locking structure. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] To this end, the present invention provides a welding device for building prefabricated components, see Figures 1 to 12 As shown, it includes a mobile frame 1, a fixed plate 2, a guide rail unit, a connecting assembly, a welding assembly, a driving assembly and a liquid supply assembly. The mobile frame 1 includes a base, a vertical plate and a lifting sleeve. The vertical plate is fixed on the base, the lifting sleeve sliding sleeve is arranged on the vertical plate, the fixed plate 2 is fixed on the side of the lifting sleeve, and a welding machine is installed on the base; See also Figures 3 to 5As shown, the guide rail unit includes a first guide rail 31 and a second guide rail 32, and the first guide rail 31 and the second guide rail 32 together form an annular structure. A slide seat 33 is slidably provided on the first guide rail 31, and a first fixing frame 34 is fixed on the first guide rail 31. The first guide rail 31 and the second guide rail 32 can be detachably assembled. A liquid supply pipe 45 is fixed on the first guide rail 31 and the second guide rail 32. A plurality of centering structures are provided on the first guide rail 31 and the second guide rail 32, and the centering structure includes an outer cylinder 41, a sliding plug 42 and a centering rod 43. The sliding plug 42 is sealingly and slidably connected inside the outer cylinder 41, and the sliding plug 42 is connected to the inner surface of the outer cylinder 41 through a first spring 44. One end of the centering rod 43 is connected to the sliding plug 42, and the other end extends to the outside of the outer cylinder 41. The centering rod 43 is slidably connected to the outer cylinder 41, and the outer cylinder 41 and the corresponding liquid supply pipe 45 are connected through a connecting pipe 46. When welding a columnar prefabricated building component, such as a columnar pier, the staff pushes the mobile frame 1 to one side of the prefabricated building component, and adjusts the position of the mobile frame 1 to move the first guide rail 31 to a position close to the prefabricated building component, and adjusts the first guide rail 31 to a state that is nearly coaxial with the prefabricated building component. Then, the staff splices the second guide rail 32 with the first guide rail 31, so that the first guide rail 31 and the second guide rail 32 together form an annular structure, and the annular structure is sleeved on the prefabricated building component, and the first guide rail 31 and the second guide rail 32 are connected. The first guide rail 31 and the second guide rail 32 can be freely disassembled and assembled. Preferably, slots are provided at both ends of the first guide rail 31, and plug blocks are fixed at both ends of the second guide rail 32. When splicing the first guide rail 31 and the second guide rail 32, the staff inserts the two plug blocks into the two slots respectively, so that the first guide rail 31 and the second guide rail 32 are assembled into a ring structure together. Finally, two bolts are used to connect the two slots and the plug blocks respectively, so that the splicing of the first guide rail 31 and the second guide rail 32 can be achieved. Other similar connection methods can also be used between the first guide rail 31 and the second guide rail 32. This is a prior art and will not be described in detail here. See also Figure 8 and Fig.10 As shown, the first guide rail 31 is connected to the fixed plate 2 through a connecting assembly, which includes a through-hole, a connecting frame 51, a fixing rod 52, a flexible collar 53 and two limit plates 54. The through-hole is opened on the fixed plate 2, one end of the connecting frame 51 is fixed on the first guide rail 31, and the other end extends toward the fixed plate 2. The fixing rod 52 is fixed to the end of the connecting frame 51 away from the first guide rail 31, and the fixing rod 52 is placed in the through-hole. The flexible collar 53 and the two limit plates 54 are fixedly sleeved on the fixing rod 52, and the flexible collar 53 is located inside the through-hole. The two limit plates 54 are respectively located on the upper and lower sides of the fixed plate 2, and each limit plate 54 is in contact with the fixed plate 2. See also Fig.11As shown, the liquid supply assembly is arranged on the lifting sleeve of the mobile frame 1, and the liquid supply assembly includes a liquid storage tank 81, and the liquid storage tank 81 has oil stored inside. The two liquid supply pipes 45 are connected to the liquid storage tank 81 through a hose 84. The liquid supply assembly also includes an electric push cylinder 82 and a sliding plate 83. The electric push cylinder 82 is installed on the top surface of the liquid storage tank 81, and the sliding plate 83 is sealed and slidably connected to the inside of the liquid storage tank 81. The telescopic end of the electric push cylinder 82 is fixedly connected to the sliding plate 83; After the first guide rail 31 and the second guide rail 32 are assembled, the staff adjusts the position of the annular structure by using the positioning structures on the first guide rail 31 and the second guide rail 32, so that the annular structure moves to a coaxial state with the prefabricated building component. Specifically, the staff starts the electric push cylinder 82, which can drive the sliding plate 83 to move downward when it is in operation. When the sliding plate 83 moves downward, the oil in the liquid storage tank 81 can be pressed into the two liquid supply pipes 45 through the two hoses 84. Further, the oil will enter the outer cylinders 41 through the connecting pipes 46. When the oil is filled into the outer cylinder 41, the oil can push the sliding plug 42 to move, so that the sliding plug 42 drives the centering rod 43 to move. Therefore, when the sliding plate 83 moves downward, a plurality of centering rods 43 can move synchronously and approach the center position of the annular structure. When each centering rod 43 contacts the outer surface of the prefabricated component, the annular structure formed by the first guide rail 31 and the second guide rail 32 will be in a coaxial state with the prefabricated component, which enables the guide rail to move around the outer circumference of the prefabricated component, thereby ensuring the welding effect of the welding gun 63 on the prefabricated component. It should be noted that when the plurality of centering rods 43 jointly press the prefabricated building components, the plurality of centering rods 43 can drive the first guide rail 31 and the second guide rail 32 to move. The first guide rail 31 is connected to the fixing plate 2 through a connecting assembly. When the first guide rail 31 is slightly displaced under the action of the plurality of centering rods 43, the first fixing frame 34 moves accordingly and drives the fixing rod 52 to move. The fixing rod 52 is located in the through-hole, and the rod diameter of the fixing rod 52 is smaller than the diameter of the through-hole, which allows the fixing rod 52 to be slightly displaced in the through-hole. This design allows the first guide rail 31 and the second guide rail 32 to be slightly displaced. The second guide rail 32 can be slightly displaced during the centering process. In addition, a flexible collar 53 is fixedly sleeved on the fixing rod 52. The flexible collar 53 connects the fixing rod 52 and the through-hole to prevent the fixing rod 52 from shaking easily inside the through-hole. Two limit plates 54 are also sleeved on the fixing rod 52, and the two limit plates 54 are respectively located on the upper and lower sides of the fixing plate 2. The setting of the two fixing plates 2 ensures that the fixing rod 52 can only move in the horizontal direction, but cannot move in the vertical direction, so that the annular structure can be moved to a state coaxial with the building prefabricated component. See also Figure 6 and Figure 7As shown, the welding assembly is arranged at one end of the first fixed frame 34 away from the first guide rail 31, the welding assembly includes a welding gun 63, and the welding gun 63 is connected to the welding machine, the welding assembly also includes a linear adjustment member 61, a movable seat 62 and a mounting frame 64, the linear adjustment member 61 is fixed to one end of the first fixed frame 34 away from the first guide rail 31, the movable seat 62 is arranged on the linear adjustment member 61, the mounting frame 64 is fixed on the top surface of the movable seat 62, the welding gun 63 is mounted on the mounting frame 64, the linear adjustment member 61 includes an assembly frame, a screw rod and a knob, the screw rod is rotatably assembled on the assembly frame, the movable seat 62 is threadedly sleeved on the screw rod, and the movable seat 62 is slidably assembled on the assembly frame, and the knob is mounted on one end of the screw rod; See also Figure 6 and Figure 7 As shown, the driving assembly is arranged at one end of the first fixed frame 34 away from the first guide rail 31, and is used to drive the slide 33 to move. The driving assembly includes a first connecting member 71, a wheel frame 72, a driving wheel 73 and a motor 74. The first connecting member 71 is fixed to one end of the first fixed frame 34 away from the first guide rail 31, the wheel frame 72 is fixed to one end of the first connecting member 71 away from the first fixed frame 34, the driving wheel 73 is rotatably assembled on the wheel frame 72, the motor 74 is mounted on the wheel frame 72, and the output shaft of the motor 74 is connected to the driving wheel 73. The first connecting member 71 includes a cylinder body 1 and a rod body 1. The cylinder body 1 is fixed to the side of the first fixed frame 34, the rod body 1 is slidably arranged in the cylinder body 1, one end of the rod body 1 extends to the outside of the cylinder body 1 and is fixedly connected to the wheel frame 72, and the cylinder body 1 and the rod body 1 are connected by a second spring. After adjusting the positions of the first guide rail 31 and the second guide rail 32, the staff starts the welding machine to make the welding gun 63 automatically weld the prefabricated building components. At the same time, the staff starts the motor 74. When the motor 74 is running, it drives the driving wheel 73 to rotate. The wheel frame 72 is connected to the first fixing frame 34 through the first connecting member 71. For the first connecting member 71, the rod body 1 always has a tendency to move away from the first fixing frame 34 under the action of the second spring, which makes the driving wheel 73 always in a state of pressing the surface of the prefabricated building component. In this state, when the driving wheel 73 rotates, it can move along the surface of the prefabricated building component, and drive the slide 33 to move through the first fixing frame 34, so that the slide 33 moves along the first guide rail 31 and the second guide rail 32, and then the welding gun 63 moves around the prefabricated building component. In this process , the welding gun 63 can complete the automatic welding of the prefabricated building components. Based on the above process, the welding equipment proposed by the present invention has a mobile function, which replaces the structure of the traditional fixed welding device. There is no need for the staff to transfer the large prefabricated building components to the welding equipment. On the basis of ensuring the welding effect, the operation steps are simplified. In addition, a lifting sleeve that can be raised and lowered is also provided on the mobile frame 1. When the lifting sleeve moves up and down, it can drive the fixed plate 2 to move, so that the fixed plate 2 drives the first guide rail 31 and the second guide rail 32 to move through the connecting assembly, and then the first guide rail 31 and the second guide rail 32 move along the height direction of the prefabricated building components. This enables the welding gun 63 to perform welding processing on different positions of the prefabricated building components. It should be noted that the lifting method of the lifting sleeve is a prior art, which is not shown in the figure and will not be described in detail here. See also Figure 8 , Fig.10 and Fig.12 As shown, a clamping assembly for clamping the connecting frame 51 is provided on the fixing plate 2, and the clamping assembly includes a second fixing frame 91, a second connecting member 92, a clamping plate 93, a mounting tube 94 and a pressure triggering structure 95. The second fixing frame 91 is fixed to the top surface of the fixing plate 2, the second connecting member 92 is fixed to the second fixing frame 91, the clamping plate 93 is fixed to the bottom end of the second connecting member 92, and the clamping plate 93 is arranged opposite to the connecting frame 51, one end of the mounting tube 94 is connected to the liquid storage tank 81, and the pressure triggering structure 95 is arranged inside the mounting tube 94; The second connecting member 92 includes a cylinder body 2 and a rod body 2. The cylinder body 2 is fixed to the side of the second fixing frame 91. The rod body 2 is slidably arranged in the cylinder body 2. One end of the rod body 2 extends to the outside of the cylinder body 2 and is fixedly connected to the clamping plate 93. The cylinder body 2 and the rod body 2 are connected by a third spring. The other end of the mounting tube 94 is connected to the cylinder body 2. The pressure trigger structure 95 includes a bracket, a block and a booster spring. The bracket is fixed in the mounting tube 94, and a through-hole is opened on the bracket. The block is arranged opposite to the through-hole. The block and the bracket are connected by the booster spring. In order to improve the stability of the first guide rail 31 and the second guide rail 32 during the welding process, the present invention designs a clamping assembly, in which the clamping plate 93 is used to press the connecting piece. When the connecting frame 51 is clamped and fixed, the positions of the connecting frame 51, the first guide rail 31 and the second guide rail 32 are fixed accordingly. Specifically, during the centering process of the first guide rail 31 and the second guide rail 32, the electric push cylinder 82 drives the sliding plate 83 to move downward. Before the oil fills the plurality of outer cylinders 41, the oil can flow out through the two hoses 84. At this time, the oil cannot overcome the elastic force applied by the booster spring on the block, that is, the oil cannot enter the mounting tube 94. When the plurality of outer cylinders 41, the two liquid supply pipes 45 and the two hoses 84 are filled After the oil is filled, the oil cannot continue to enter the two hoses 84. As the sliding plate 83 continues to move downward, the pressure applied to the oil by the sliding plate 83 can overcome the elastic force applied by the booster spring on the block, so that the block is pushed away by the oil. At this time, the oil can enter the mounting tube 94 and enter the second cylinder through the mounting tube 94. In this process, the oil can push the second rod body to move, so that the second rod body drives the clamping plate 93 to move downward until the clamping plate 93 presses the connecting plate. In this case, the clamping plate 93 plays a role in clamping and fixing the connecting plate, and the first guide rail 31 and the second guide rail 32 are also fixed accordingly. This design can ensure the position stability of the first guide rail 31 and the second guide rail 32 during the welding process, thereby ensuring the welding effect. See also Figures 8 to 10 As shown, a locking assembly is provided on the fixed plate 2, and the locking assembly includes a connecting rod 101, a rack 102, a gear 104, a rotating shaft 103 and a one-way locking structure 105. One end of the connecting rod 101 is fixedly connected to the rod body 2, and the other end is fixedly connected to the rack 102. The rotating shaft 103 is rotatably assembled on the second fixed frame 91, and the gear 104 is fixedly sleeved on the rotating shaft 103, and the gear 104 and the rack 102 are meshed with each other. The one-way locking structure 105 is arranged on the second fixed frame 91, and the one-way locking structure 105 acts on the rotating shaft 103 to provide a one-way locking effect on the rotating shaft 103; The fixed plate 2 is also provided with a one-way locking assembly. For the one-way locking assembly, when the rod body 2 moves downward, the rack 102 can be driven to move through the connecting rod 101. When the rack 102 moves, it can drive the gear 104 to rotate, so that the rotating shaft 103 rotates accordingly. The second fixed frame 91 is provided with a one-way locking structure 105 acting on the rotating shaft 103, which is used to perform one-way locking on the rotating shaft 103. Under the action of the one-way locking structure 105, the rotating shaft 103 can only rotate in one direction, so that the rod body 2 can only move downward but not upward. This design can avoid the clamping plate 93 from moving upward and resetting, and ensure the clamping effect of the clamping plate 93 on the connecting frame 51. It should be noted that the one-way locking structure 105 can be realized by a ratchet pawl. This is a prior art and will not be elaborated on here.

[0019] 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.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for building prefabricated components, characterized in that: It comprises a mobile frame (1), a fixed plate (2), a guide rail unit, a connection component, a welding component, a drive component and a liquid supply component; The movable frame (1) comprises a base, a vertical plate and a lifting sleeve, the vertical plate is fixed on the base, the lifting sleeve sliding sleeve is arranged on the vertical plate, the fixed plate (2) is fixed on the side of the lifting sleeve, and a welding machine is installed on the base; The guide rail unit comprises a first guide rail (31) and a second guide rail (32); the first guide rail (31) and the second guide rail (32) together form an annular structure; a slide seat (33) is slidably arranged on the first guide rail (31); a first fixing frame (34) is fixed on the first guide rail (31); the first guide rail (31) and the second guide rail (32) are detachably assembled; a liquid supply pipe (45) is fixed on each of the first guide rail (31) and the second guide rail (32); and a plurality of centering structures are arranged on each of the first guide rail (31) and the second guide rail (32); Wherein, the first guide rail (31) and the fixed plate (2) are connected via a connecting assembly; Wherein, the welding assembly is arranged on a first fixing frame (34), the welding assembly comprises a welding gun (63), and the welding gun (63) is connected to a welding machine; Wherein, the driving assembly is arranged on the first fixed frame (34) and is used to drive the slide seat (33) to move; The liquid supply assembly is arranged on the lifting sleeve, and the liquid supply assembly comprises a liquid storage tank (81). Oil is stored inside the liquid storage tank (81), and the two liquid supply pipes (45) are connected to the liquid storage tank (81) through a hose (84).

2. The welding equipment for prefabricated building components according to claim 1, characterized in that: The centering structure comprises an outer cylinder (41), a sliding plug (42) and a centering rod (43); the sliding plug (42) is sealingly and slidably connected inside the outer cylinder (41), and the sliding plug (42) and the inner surface of the outer cylinder (41) are connected via a first spring (44); one end of the centering rod (43) is connected to the sliding plug (42), and the other end extends to the outside of the outer cylinder (41); the centering rod (43) is slidably connected to the outer cylinder (41), and the outer cylinder (41) and the corresponding liquid supply pipe (45) are connected via a connecting pipe (46).

3. The welding equipment for prefabricated building components according to claim 2, characterized in that: The connecting assembly comprises a through-hole, a connecting frame (51), a fixing rod (52), a flexible sleeve (53) and two limiting plates (54); the through-hole is formed on the fixing plate (2); one end of the connecting frame (51) is fixed on the first guide rail (31), and the other end extends in the direction of the fixing plate (2); the fixing rod (52) is fixed to an end of the connecting frame (51) away from the first guide rail (31), and the fixing rod (52) is placed in the through-hole; the flexible sleeve (53) and the two limiting plates (54) are both fixedly sleeved on the fixing rod (52); the flexible sleeve (53) is located inside the through-hole; the two limiting plates (54) are respectively located on the upper and lower sides of the fixing plate (2); and each limiting plate (54) is in contact with the fixing plate (2).

4. The welding equipment for prefabricated building components according to claim 3, characterized in that: The welding assembly further comprises a linear adjustment member (61), a movable seat (62) and a mounting frame (64), wherein the linear adjustment member (61) is fixed to an end of the first fixing frame (34) away from the first guide rail (31), the movable seat (62) is arranged on the linear adjustment member (61), the mounting frame (64) is fixed to the top surface of the movable seat (62), and the welding gun (63) is mounted on the mounting frame (64); The linear adjustment member (61) comprises an assembly frame, a screw rod and a knob, the screw rod is rotatably assembled on the assembly frame, the movable seat (62) is threadedly sleeved on the screw rod, and the movable seat (62) is slidably assembled on the assembly frame, and the knob is mounted on one end of the screw rod.

5. The welding equipment for prefabricated building components according to claim 4, characterized in that: The driving assembly comprises a first connecting member (71), a wheel frame (72), a driving wheel (73) and a motor (74); the first connecting member (71) is fixed to an end of the first fixing frame (34) away from the first guide rail (31); the wheel frame (72) is fixed to an end of the first connecting member (71) away from the first fixing frame (34); the driving wheel (73) is rotatably mounted on the wheel frame (72); the motor (74) is mounted on the wheel frame (72); and an output shaft of the motor (74) is connected to the driving wheel (73).

6. The welding equipment for prefabricated building components according to claim 5, characterized in that: The first connecting member (71) comprises a cylinder body 1 and a rod body 1, the cylinder body 1 being fixed to a side surface of the first fixing frame (34), the rod body 1 being slidably disposed in the cylinder body 1, one end of the rod body 1 extending to the outside of the cylinder body 1 and being fixedly connected to the wheel frame (72), and the cylinder body 1 and the rod body 1 being connected via a second spring.

7. The welding equipment for prefabricated building components according to claim 6, characterized in that: The liquid supply assembly further comprises an electric push cylinder (82) and a sliding plate (83); the electric push cylinder (82) is mounted on the top surface of the liquid storage tank (81); the sliding plate (83) is sealingly and slidingly connected to the inside of the liquid storage tank (81); and the telescopic end of the electric push cylinder (82) is fixedly connected to the sliding plate (83).

8. The welding equipment for prefabricated building components according to claim 1, characterized in that: The fixing plate (2) is provided with a clamping assembly for clamping the connecting frame (51), the clamping assembly comprising a second fixing frame (91), a second connecting member (92), a clamping plate (93), a mounting tube (94) and a pressure triggering structure (95), the second fixing frame (91) is fixed to the top surface of the fixing plate (2), the second connecting member (92) is fixed to the second fixing frame (91), the clamping plate (93) is fixed to the bottom end of the second connecting member (92), and the clamping plate (93) is arranged opposite to the connecting frame (51), one end of the mounting tube (94) is connected to the liquid storage tank (81), and the pressure triggering structure (95) is arranged inside the mounting tube (94); The second connecting member (92) comprises a second cylinder body and a second rod body, the second cylinder body is fixed to the side of the second fixing frame (91), the second rod body is slidably arranged in the second cylinder body, one end of the second rod body extends to the outside of the second cylinder body and is fixedly connected to the clamping plate (93), the second cylinder body and the second rod body are connected via a third spring, and the other end of the mounting tube (94) is connected to the second cylinder body; The pressure trigger structure (95) comprises a bracket, a blocking block and a pressure-boosting spring; the bracket is fixed in a mounting tube (94), a through opening is provided on the bracket, the blocking block is arranged opposite to the through opening, and the blocking block and the bracket are connected via the pressure-boosting spring.

9. The welding equipment for prefabricated building components according to claim 8, characterized in that: The fixing plate (2) is provided with a locking assembly, the locking assembly comprising a connecting rod (101), a rack (102), a gear (104), a rotating shaft (103) and a one-way locking structure (105); one end of the connecting rod (101) is fixedly connected to the second rod body, and the other end is fixedly connected to the rack (102); the rotating shaft (103) is rotatably mounted on the second fixing frame (91); the gear (104) is fixedly sleeved on the rotating shaft (103), and the gear (104) and the rack (102) are meshed with each other; the one-way locking structure (105) is arranged on the second fixing frame (91); the one-way locking structure (105) acts on the rotating shaft (103) to provide a one-way locking effect on the rotating shaft (103).

10. A welding method for a welding device for building prefabricated components, based on the welding device for building prefabricated components according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Push the mobile frame (1) next to the prefabricated building component, adjust the position, splice the first guide rail (31) and the second guide rail (32) into a ring structure, sleeve it on the component, and use the positioning structure to adjust it to a coaxial state; Step 2: Start the electric push cylinder (82), push the centering rod (43) through the oil to press the component, and at the same time, the pressing assembly works, the pressing plate (93) fixes the connecting frame (51), and the one-way locking assembly ensures that the pressing state is not reset; Step 3: Start the welding machine and the motor (74), and the welding gun (63) moves along the surface of the component along with the driving wheel (73), and the welding is automatically completed; Step 4: as required, the height of the first guide rail (31) and the second guide rail (32) is adjusted by means of the lifting sleeve, and welding is performed at different positions of the component; Step 5: After welding is completed, turn off the equipment, remove the guide rails, move the frame, and complete the welding operation.

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