A hydrogen storage tank welding device and welding process

Abstract

The present invention relates to the field of welding technology, and specifically to a hydrogen storage tank welding device and a welding process. The welding device includes a fuselage, a first fixed seat, a driving seat, a fastening mechanism and a supporting seat. The first fixed seat is arranged on the inner wall of the fuselage. The first fixed seat and the fuselage are connected by a linear motor. A first welding head is arranged below the first fixed seat. Compared with the current welding equipment, the present invention is provided with a detection mechanism. The welding quality of the tank weld is detected by the detection mechanism. When a weld without penetration is found, the weld is secondary welded by a second welding head. The present invention is also provided with a sensing component. During the welding process, the sensing component is used to detect whether the rotation speed of the chuck and the tank is stable and qualified, so as to avoid problems such as uneven weld quality and deformation. At the same time, the lubricating fluid in the transmission groove can be purified by the sensing component, so as to improve the service life of the driving mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a hydrogen storage tank welding device and a welding process. Background Art

[0002] Hydrogen storage tanks are typically made of high-strength materials, such as steel or aluminum alloys, to withstand the high pressure requirements of hydrogen. They are widely used in various applications, including industry, energy production, aerospace, and the automotive industry. Current hydrogen storage tanks often require welding during production.

[0003] However, the working principles of existing hydrogen storage tank welding equipment are basically similar to the patents "CN218556035U A tank welding device (publication date 2023.03.03)" and "CN220480756U A tank welding device (publication date 2024.02.13)". In the actual working process, the staff usually need to wait until the welding is completed before they can check the welding quality of the tank. At the same time, if the welding quality is found to be unqualified, it is difficult to carry out subsequent remedies; in addition, when driving the tank to rotate, the current welding equipment cannot monitor whether the rotation speed of the tank is stable and meets the standard. It basically relies on the speed of the motor itself. If the rotation speed of the tank is unstable due to its own reasons, the welding quality of the tank is easily affected. Finally, the current welding equipment cannot separate the part to be welded from the external environment when working. On the one hand, it wastes the protective gas, and on the other hand, it affects the working environment. Summary of the invention

[0004] The purpose of the present invention is to provide a hydrogen storage tank welding device and a welding process to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a hydrogen storage tank welding device, the welding device includes a fuselage, a first fixed seat, a driving seat, a fastening mechanism and a supporting seat, the first fixed seat is arranged on the inner wall of the fuselage, the first fixed seat and the fuselage are connected by a linear motor, a first welding head is arranged below the first fixed seat, the first fixed seat and the first welding head are driven to move by the linear motor so that the first welding head is aligned with the part to be welded, the driving seat and the supporting seat are relatively arranged at the two ends inside the fuselage, the fastening mechanism is arranged between the driving seat and the supporting seat, the fastening mechanism and the supporting seat are both movably installed inside the fuselage through a slide rail, and one end of the driving seat close to the fastening mechanism A chuck is provided. When the present invention is working, the lower end of the tank body is clamped by the chuck, and the upper end of the tank body is clamped by the fastening mechanism. The driving seat is provided with a driving mechanism inside. The upper and lower ends of the chuck and the tank body are controlled to rotate by the driving mechanism so that the first welding head and the part to be welded can be welded in all directions. A sliding frame is provided inside the support seat, and a detection mechanism is provided at one end of the sliding frame close to the fastening mechanism. In the process of welding the tank body, the detection mechanism is transported to the inside of the tank body by the sliding frame. When the detection mechanism is aligned with the weld, the welding quality of the weld of the tank body is detected by the detection mechanism (the function realized by the detection mechanism belongs to the conventional technical means in this field, and the specific structure is not described), so that the staff can make timely remedies.

[0006] Furthermore, the fastening mechanism includes a base and a fixed cylinder, the base is movably mounted on a slide rail inside the fuselage, the fixed cylinder is movably mounted above the base through an annular slider, a clamping claw is arranged inside the fixed cylinder, the clamping claw is connected to the fixed cylinder through a telescopic assembly (the functions realized by the chuck, the telescopic assembly and the clamping claw belong to conventional technical means in this field, and the specific structure is not described), the clamping claw is driven to move by the telescopic assembly to improve the applicability of the present invention, the driving mechanism includes a driving motor, a first gear, a second gear, a third gear, a worm gear assembly, a transmission groove and a crank, the first gear, the second gear and the third gear are all arranged in the transmission groove, The first gear and the second gear are both meshed with the third gear, the crank handle is arranged on the outside of the driving seat, the driving motor is connected to the first gear, the third gear is connected to the chuck, and the second gear is connected to the crank handle through a worm gear assembly. When the present invention is working normally, the driving motor and the first gear drive the third gear and the chuck to rotate, so that the first welding head and the part to be welded can be welded in all directions. When the driving motor fails, the staff can drive the third gear and the chuck to rotate through the crank handle and the worm gear assembly. Through the above technical scheme, the present invention has a higher fault tolerance rate than the current welding equipment, and reduces the risk of shutdown during the welding process.

[0007] Furthermore, a sensing component is provided at one end of the driving seat away from the chuck, one end of the sensing component is connected to the third gear through a speed-increasing gear box, and the other end of the sensing component is connected to the transmission groove through a liquid guide groove, and lubricating liquid is provided in the transmission groove. During welding, the third gear will work synchronously with the sensing component of the present invention, and the sensing component can detect whether the rotation speed of the chuck is stable and qualified on the one hand, thereby avoiding problems such as uneven weld quality and deformation, and at the same time, the sensing component can also purify the lubricating liquid in the transmission groove, thereby increasing the service life of the driving mechanism, avoiding vibration of the chuck during operation, and ensuring the welding effect.

[0008] Furthermore, a linkage assembly is provided inside the first gear, and the linkage assembly includes a storage groove, an electromagnet and a linkage block. The electromagnet is provided at one end of the storage groove away from the main shaft of the driving motor, and the linkage block is provided at one end of the storage groove close to the main shaft of the driving motor. A positioning groove is provided on the main shaft of the driving motor, and the end of the linkage block close to the electromagnet is magnetic. The linkage block is connected to the storage groove through a compression spring rod. When the present invention is working normally, the electromagnet will generate a group of magnetic fields that repel the linkage block, so that the linkage block is inserted into the positioning groove, and the main shaft of the driving motor is fixed to the first gear through the linkage assembly, thereby facilitating the driving motor to drive the chuck to rotate. When the driving motor fails, the electromagnet is turned off, and under the action of the compression spring rod, the linkage block is pulled out of the positioning groove. At this time, the main shaft of the driving motor is slidingly connected to the first gear. Through the above technical scheme, the staff can drive the crank handle to rotate with less force after encountering a failure of the driving motor.

[0009] Furthermore, the induction component includes a first induction chamber, an eccentric wheel and a second induction chamber, the eccentric wheel is arranged between the first induction chamber and the second induction chamber, the eccentric wheel is connected to the third gear through a speed-increasing gearbox (the function realized by the speed-increasing gearbox belongs to the conventional technical means in this field, and the specific structure is not described). When the third gear in the present invention rotates, it will synchronously drive the chuck and the eccentric wheel to rotate, a first induction plate is arranged in the first induction chamber, and a second induction plate is arranged in the second induction chamber, the first induction plate is connected to the first induction chamber through a first return spring rod, and the second induction plate is connected to the second induction chamber through a second return spring rod, and when the eccentric wheel rotates, it will cyclically drive the first induction plate and the second induction plate to move in the first induction chamber and the second induction chamber, and each movement of the first induction plate and the second induction plate will suck the lubricating fluid in the transmission groove into the first induction chamber and the second induction chamber, or from the first induction chamber and the second The lubricating liquid is discharged from the induction chamber. In the present invention, one end of the first induction chamber and the second induction chamber that is away from each other is connected to the transmission groove through a filter cartridge and a liquid guide groove. The filter cartridge is magnetic. When the lubricating liquid flows through the filter cartridge, the filter cartridge can absorb the debris in the lubricating liquid, thereby improving the service life of the gears in the transmission groove. Two groups of conductive sheets are also arranged in the first induction chamber, one group of which is fixedly mounted on the first induction plate, and the other group of which is fixedly mounted on one end of the first induction chamber close to the eccentric wheel. The two groups of conductive sheets are connected by a conductive rod. When the present invention is working, the two groups of conductive sheets are connected to an external power supply and a current detection device. The staff can determine whether the chuck stably drives the tank body to rotate by detecting the current change period on the current detection device. The present invention sets a speed-increasing gear box so that the rotation speed of the eccentric wheel is greater than the rotation speed of the chuck, thereby improving the detection accuracy (the speed ratio of the eccentric wheel to the chuck is freely selected by the staff).

[0010] Furthermore, the first welding head includes a connecting seat, a first sleeve, a second sleeve, and a first laser emitter. The first sleeve is arranged below the connecting seat, the second sleeve is arranged inside the first sleeve, and the first laser emitter is arranged inside the second sleeve. The tank body is welded by the first laser emitter. One side of the upper end of the first sleeve is connected to an external gas supply device, and the other side of the upper end of the first sleeve is connected to an external suction device. A filter is arranged in the first sleeve. When the present invention is working, a protective gas is delivered to the first sleeve through the external gas supply device, and the exhaust gas generated during welding is sucked away by the external suction device, and particulate matter in the exhaust gas is intercepted by the filter. An air bag is arranged at the lower end of the first sleeve. On the one hand, the air bag can separate the part to be welded of the present invention from the external environment, thereby reducing the use of protective gas and preventing the exhaust gas from overflowing. On the other hand, when the chuck rotates with the tank body, the air bag can clean the part to be welded.

[0011] Furthermore, the sliding frame is movably installed inside the support seat through a screw assembly, and a rotating sleeve is provided at one end of the sliding frame close to the fastening mechanism, and the rotating sleeve is connected to the sliding frame through a reversing assembly, and telescopic rods are provided at both ends of the rotating sleeve, and one group of the telescopic rods has a second welding head at the working end (the second welding head in the present invention has the same structure and function as the first welding head, and the specific structure is not described), and another group of the telescopic rods has a detection mechanism at the working end, and a cleaning block is wrapped around the outside of the detection mechanism. When the present invention is not working, the two groups of telescopic rods are in the same horizontal plane with the sliding frame. When the tank body needs to be welded, the staff first uses the screw assembly and the sliding frame to make the detection mechanism and the first welding head in contact with each other. The two welding heads extend into the tank body, and then the reversing assembly is turned on to make the two sets of telescopic rods perpendicular to the sliding frame. At this time, the two sets of telescopic rods are turned on to make the second welding head and the detection mechanism close to the part to be welded, and the welded weld is detected by the detection mechanism. When it is found that the weld is not welded through, the weld is welded for a second time by the second welding head. Finally, when the present invention encounters a tank body with a larger thickness, the second welding head can be driven by the screw assembly and the sliding frame to move the part to be welded, and then the external part to be welded of the tank body is welded by the first welding head, and the internal part to be welded of the tank body is welded by the second welding head. The double welding method is used to facilitate the staff to achieve the same qualified welding effect with less energy consumption.

[0012] Furthermore, the reversing assembly includes a liquid storage tank, a cylinder, a movable tank, a rotating shaft and an arc-shaped tank, the rotating shaft is fixedly connected to the rotating sleeve and passes through the rotating sleeve, hydraulic oil and a piston are arranged in the liquid storage tank, the piston is connected to the working end of the cylinder, the liquid storage tank is communicated with the movable tank, a movable plate and an arc-shaped rod are arranged in the movable tank, the movable plate is fixedly connected to the rotating shaft, one end of the arc-shaped rod is arranged in the arc-shaped tank, the other end of the arc-shaped rod is arranged in the movable tank and fixedly connected to the movable plate, an induction spring is arranged in the arc-shaped tank, and a piezoelectric sheet is arranged at one end of the arc-shaped rod close to the induction spring. According to the invention, when the detection mechanism and the second welding head are extended into the tank body, the cylinder will drive the piston to move so that the hydraulic oil in the liquid storage tank will enter the movable groove. At this time, under the action of the hydraulic pressure, the movable plate will rotate with the rotating shaft and the rotating sleeve, and the arc rod will squeeze the arc groove. The electrical signal generated by the piezoelectric sheet can facilitate the staff to judge whether the detection mechanism and the second welding head are perpendicular to the sliding frame, so as to facilitate the subsequent work of the detection mechanism and the second welding head. In addition, compared with using a motor to drive the rotating sleeve to rotate, the present invention can reduce the width of the sliding frame, thereby avoiding the situation where the diameter of the opening end of the tank body is too small and the sliding frame cannot be extended into the tank body.

[0013] A tank welding process of this embodiment includes the following steps:

[0014] S1: Clamp the lower end of the can body by a chuck, clamp the upper end of the can body by a fastening mechanism, and then move the fastening mechanism so that the upper end of the can body contacts the lower end of the can body;

[0015] S2: Turn on the linear motor to align the first welding head with the part to be welded;

[0016] S3: Turn on the first welding head and the driving motor, drive the upper end and the lower end of the tank body to rotate through the driving motor, and weld the to-be-welded portion through the first welding head.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: compared with the current welding equipment, the present invention is provided with a fastening mechanism and a detection mechanism. During welding, the lower end of the tank body is clamped by the chuck, and the upper end of the tank body is clamped by the fastening mechanism. A driving mechanism is provided inside the driving seat, and the upper and lower ends of the chuck and the tank body are controlled to rotate by the driving mechanism so that the first welding head and the part to be welded can be welded in all directions. During the welding process of the tank body, the detection mechanism is transported to the inside of the tank body by the sliding frame. When the detection mechanism is aligned with the weld, the welding quality of the tank body is detected by the detection mechanism. When a weld without penetration is found, the weld is welded for the second time by the second welding head. The present invention is also provided with an induction component. During the welding process, the induction component is used to detect whether the rotation speed of the chuck and the tank body is stable and qualified, so as to avoid problems such as uneven weld quality and deformation. At the same time, the induction component can also purify The lubricating liquid in the transmission groove can improve the service life of the driving mechanism, avoid vibration of the chuck and the tank body during rotation, and thus ensure the welding effect. In addition, when the driving motor fails, the staff can drive the third gear and the chuck to rotate through the crank and the worm gear assembly to improve the fault tolerance of the present invention. Finally, the first welding head in the present invention includes a connecting seat, a first sleeve, a second sleeve, and a first laser emitter. During welding, a protective gas is delivered to the first sleeve through an external gas delivery device, and the exhaust gas generated during welding is sucked away by the external suction device. The particulate matter in the exhaust gas is intercepted by the filter. An air bag is provided at the lower end of the first sleeve. The air bag can separate the part to be welded of the present invention from the external environment on the one hand, thereby reducing the use of protective gas and preventing the exhaust gas from overflowing. On the other hand, when the chuck rotates with the tank body, the air bag can clean the part to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention during welding;

[0021] Figure 3 It is a schematic diagram of the internal structure of the drive seat of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the fastening mechanism of the present invention;

[0023] Figure 5 The present invention Figure 3 Schematic diagram of the structure of the middle AA part;

[0024] Figure 6 The present invention Figure 3 Schematic diagram of the structure of the middle BB part;

[0025] Figure 7 The present invention Figure 6 Schematic diagram of the structure of the middle C part;

[0026] Figure 8 is a schematic structural diagram of a first welding head of the present invention;

[0027] Fig. 9 It is a schematic diagram of the combination of the support base and the sliding frame of the present invention;

[0028] Fig.10 It is a schematic diagram of the internal structure of the support base of the present invention;

[0029] Fig.11 It is a schematic diagram of the internal structure of the sliding frame of the present invention;

[0030] Fig.12 The present invention Fig.11 Schematic diagram of the central DD structure.

[0031] In the figure: 1, fuselage; 2, first fixing seat; 3, first welding head; 31, connecting seat; 32, first sleeve; 321, airbag; 33, second sleeve; 34, first laser emitter; 4, driving seat; 41, first induction cavity; 411, first induction plate; 42, speed increasing gear box; 43, driving motor; 431, driving motor main shaft; 44, first gear; 441, electromagnet; 442, linkage block; 45, eccentric wheel; 46, second induction cavity; 461, second induction Plate; 47, worm gear assembly; 48, second gear; 49, third gear; 5, chuck; 6, fastening mechanism; 61, base; 62, annular slider; 63, fixing cylinder; 64, clamping claw; 7, support seat; 71, second welding head; 72, sliding frame; 721, liquid storage tank; 722, cylinder; 723, movable groove; 724, rotating shaft; 725, movable plate; 726, arc rod; 727, arc groove; 73, telescopic rod; 74, detection mechanism; 75, rotating sleeve. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] See also Figure 1-Figure 12 The present invention provides a technical solution: a hydrogen storage tank welding device, the welding device includes a fuselage 1, a first fixed seat 2, a driving seat 4, a fastening mechanism 6 and a supporting seat 7, the first fixed seat 2 is arranged on the inner wall of the fuselage 1, the first fixed seat 2 and the fuselage 1 are connected by a linear motor, a first welding head 3 is arranged below the first fixed seat 2, the first fixed seat 2 and the first welding head 3 are driven to move by the linear motor so that the first welding head 3 is aligned with the part to be welded, the driving seat 4 and the supporting seat 7 are relatively arranged at the two ends inside the fuselage 1, the fastening mechanism 6 is arranged between the driving seat 4 and the supporting seat 7, the fastening mechanism 6 and the supporting seat 7 are both movably installed inside the fuselage 1 through a slide rail, and a chuck 5 is arranged at one end of the driving seat 4 close to the fastening mechanism 6. When the invention is working, the lower end of the tank body is clamped by the chuck 5, and the upper end of the tank body is clamped by the fastening mechanism 6. The driving seat 4 is provided with a driving mechanism inside, and the upper and lower ends of the chuck 5 and the tank body are controlled to rotate by the driving mechanism, so that the first welding head 3 and the part to be welded can be welded in all directions. The support seat 7 is provided with a sliding frame 72 inside, and the sliding frame 72 is provided with a detection mechanism 74 at one end close to the fastening mechanism 6. In the process of welding the tank body, the detection mechanism 74 is transported to the inside of the tank body by the sliding frame 72. When the detection mechanism 74 is aligned with the weld, the welding quality of the weld of the tank body is detected by the detection mechanism 74 (the function realized by the detection mechanism 74 belongs to the conventional technical means in this field, and the specific structure is not described), so that the staff can remedy it in time.

[0034] like Figure 2-Figure 4 As shown, the fastening mechanism 6 includes a base 61 and a fixed cylinder 63, the base 61 is movably mounted on the slide rail inside the fuselage 1, the fixed cylinder 63 is movably mounted above the base 61 through an annular slider 62, a clamping claw 64 is arranged inside the fixed cylinder 63, the clamping claw 64 is connected to the fixed cylinder 63 through a telescopic assembly (the functions realized by the chuck 5, the telescopic assembly and the clamping claw 64 belong to conventional technical means in this field, and the specific structure is not described), the clamping claw 64 is driven to move by the telescopic assembly to improve the applicability of the present invention, the driving mechanism includes a driving motor 43, a first gear 44, a second gear 48, a third gear 49, a worm gear assembly 47, a transmission groove and a crank, the first gear 44, the second gear 48 and the third gear 49 are all arranged in the transmission groove Inside, the first gear 44 and the second gear 48 are meshed with the third gear 49, the crank is arranged on the outside of the driving seat 4, the driving motor 43 is connected to the first gear 44, the third gear 49 is connected to the chuck 5, and the second gear 48 is connected to the crank through the worm gear assembly 47. When the present invention is working normally, the third gear 49 and the chuck 5 are driven to rotate by the driving motor 43 and the first gear 44, so that the first welding head 3 and the part to be welded are welded in all directions. When the driving motor 43 fails, the staff can drive the third gear 49 and the chuck 5 to rotate through the crank and the worm gear assembly 47. Through the above technical scheme, the present invention has a higher fault tolerance rate than the current welding equipment, and reduces the risk of shutdown during welding.

[0035] like Figure 3 , Figure 5 As shown, a sensing component is provided at one end of the driving seat 4 away from the chuck 5, one end of the sensing component is connected to the third gear 49 through the speed-increasing gear box 42, and the other end of the sensing component is connected to the transmission groove through the liquid guide groove, and the transmission groove is provided with lubricating liquid. During welding, the third gear 49 will work synchronously with the sensing component of the present invention. On the one hand, the sensing component can detect whether the rotation speed of the chuck 5 is stable and qualified, thereby avoiding problems such as uneven weld quality and deformation. At the same time, the sensing component can also purify the lubricating liquid in the transmission groove, thereby improving the service life of the driving mechanism, avoiding vibration of the chuck 5 during operation, and ensuring the welding effect.

[0036] like Figure 3 , Figure 6-Figure 7As shown, a linkage assembly is arranged inside the first gear 44, and the linkage assembly includes a storage slot, an electromagnet 441 and a linkage block 442. The electromagnet 441 is arranged at one end of the storage slot away from the main shaft 431 of the driving motor, and the linkage block 442 is arranged at one end of the storage slot close to the main shaft 431 of the driving motor. A positioning slot is arranged on the main shaft 431 of the driving motor, and the end of the linkage block 442 close to the electromagnet 441 is magnetic. The linkage block 442 is connected to the storage slot through a compression spring rod. When the present invention is working normally, the electromagnet 441 will generate a set of repulsive The magnetic field of the linkage block 442 allows the linkage block 442 to be inserted into the positioning groove, and the driving motor main shaft 431 and the first gear 44 are fixed together through the linkage assembly, so that it is convenient for the driving motor 43 to drive the chuck 5 to rotate. When the driving motor 43 fails, the electromagnet 441 is turned off, and under the action of the compression spring rod, the linkage block 442 is pulled out of the positioning groove. At this time, the driving motor main shaft 431 is slidingly connected with the first gear 44. Through the above technical solution, the staff can drive the crank handle to rotate with less force after encountering a failure of the driving motor 43.

[0037] like Figure 3 , Figure 6-Figure 7As shown, the induction component includes a first induction chamber 41, an eccentric wheel 45 and a second induction chamber 46. The eccentric wheel 45 is arranged between the first induction chamber 41 and the second induction chamber 46. The eccentric wheel 45 is connected to the third gear 49 through a speed-increasing gear box 42 (the function realized by the speed-increasing gear box belongs to the conventional technical means in this field, and the specific structure is not described). When the third gear 49 in the present invention rotates, it will synchronously drive the chuck 5 and the eccentric wheel 45 to rotate. A first induction plate 411 is arranged in the first induction chamber 41, and a second induction plate 461 is arranged in the second induction chamber 46. The first induction plate 411 is connected to the first induction chamber 41 through a first return spring rod, and the second induction plate 461 is connected to the second induction chamber 46 through a second return spring rod. When the eccentric wheel 45 rotates, it will cyclically drive the first induction plate 411 and the second induction plate 461 to move in the first induction chamber 41 and the second induction chamber 46. Each movement of the first induction plate 411 and the second induction plate 461 will suck the lubricating fluid in the transmission groove into the first induction chamber 41 and the second induction chamber 46. The lubricating liquid flows through the filter cartridge, and the filter cartridge can absorb the debris in the lubricating liquid when the lubricating liquid flows through the filter cartridge, thereby improving the service life of the gears in the transmission groove. Two groups of conductive sheets are also arranged in the first sensing chamber 41, one group of conductive sheets is fixedly mounted on the first sensing plate 411, and the other group of conductive sheets is fixedly mounted on one end of the first sensing chamber 41 close to the eccentric wheel 45, and the two groups of conductive sheets are connected by conductive rods. When the present invention is working, the two groups of conductive sheets are connected to the external power supply and the current detection device. The staff can determine whether the chuck 5 stably drives the tank body to rotate by detecting the current change cycle on the current detection device. The present invention sets a speed-increasing gear box so that the rotation speed of the eccentric wheel 45 is greater than the rotation speed of the chuck 5, thereby improving the detection accuracy (the speed ratio of the eccentric wheel 45 to the chuck 5 is freely selected by the staff).

[0038] like Figure 8As shown, the first welding head 3 includes a connecting seat 31, a first sleeve 32, a second sleeve 33, and a first laser emitter 34. The first sleeve 32 is arranged below the connecting seat 31, the second sleeve 33 is arranged inside the first sleeve 32, and the first laser emitter 34 is arranged inside the second sleeve 33. The tank body is welded by the first laser emitter 34. One side of the upper end of the first sleeve 32 is connected to the external gas supply device, and the other side of the upper end of the first sleeve 32 is connected to the external suction device. A filter is arranged in the first sleeve 32. Net, when the present invention is working, the protective gas is delivered to the first sleeve 32 through the external gas delivery device, the exhaust gas generated during welding is sucked away by the external suction device, and the particulate matter in the exhaust gas is intercepted by the filter. The lower end of the first sleeve 32 is provided with an air bag 321. On the one hand, the air bag 321 can separate the part to be welded of the present invention from the external environment, thereby reducing the use of protective gas and preventing the exhaust gas from overflowing. On the other hand, when the chuck 5 rotates with the tank body, the air bag 321 can clean the part to be welded.

[0039] like Figure 9-11 As shown, the sliding frame 72 is movably installed inside the support seat 7 through a screw assembly, and a rotating sleeve 75 is provided at one end of the sliding frame 72 close to the fastening mechanism 6. The rotating sleeve 75 is connected to the sliding frame 72 through a reversing assembly. Telescopic rods 73 are provided at both ends of the rotating sleeve 75. The working end of one group of telescopic rods 73 is provided with a second welding head 71 (the second welding head 71 in the present invention has the same structure and function as the first welding head 3, and the specific structure is not described), and the working end of the other group of telescopic rods 73 is provided with a detection mechanism 74, and the outer side of the detection mechanism 74 is wrapped with a cleaning block. When the present invention is not working, the two groups of telescopic rods 73 are in the same horizontal plane with the sliding frame 72. When the tank body needs to be welded, the staff first uses the screw assembly and the sliding frame 72 to make the detection mechanism 74 and The second welding head 71 extends into the tank body, and then the reversing assembly is turned on to make the two sets of telescopic rods 73 perpendicular to the sliding frame 72. At this time, the two sets of telescopic rods 73 are turned on to make the second welding head 71 and the detection mechanism 74 close to the part to be welded, and the welded weld is detected by the detection mechanism 74. When it is found that the weld is not welded through, the weld is welded for a second time by the second welding head 71. Finally, when encountering a tank body with a larger thickness, the present invention can drive the second welding head 71 to move the part to be welded by the screw assembly and the sliding frame 72, and then weld the external part to be welded of the tank body by the first welding head 3, and weld the internal part to be welded of the tank body by the second welding head 71. The double welding method is used to facilitate the staff to achieve the same qualified welding effect with less energy consumption.

[0040] like Figure 11-Figure 12As shown, the reversing assembly includes a liquid storage tank 721, a cylinder 722, a movable tank 723, a rotating shaft 724 and an arc-shaped tank 727. The rotating shaft 724 is fixedly connected to the rotating sleeve 75 and runs through the rotating sleeve 75. Hydraulic oil and a piston are arranged in the liquid storage tank 721. The piston is connected to the working end of the cylinder 722. The liquid storage tank 721 is communicated with the movable tank 723. A movable plate 725 and an arc-shaped rod 726 are arranged in the movable tank 723. The movable plate 725 is fixedly connected to the rotating shaft 724. One end of the arc-shaped rod 726 is arranged in the arc-shaped tank 727. The other end of the arc-shaped rod 726 is arranged in the movable tank 723 and fixedly connected to the movable plate 725. An induction spring is arranged in the arc-shaped tank 727. A piezoelectric is arranged at one end of the arc-shaped rod 726 close to the induction spring. In the present invention, when the detection mechanism 74 and the second welding head 71 are extended into the tank body, the cylinder 722 will drive the piston to move so that the hydraulic oil in the liquid storage tank 721 enters the movable groove 723. At this time, under the action of the hydraulic pressure, the movable plate 725 will rotate with the rotating shaft 724 and the rotating sleeve 75, and the arc rod 726 will squeeze the arc groove 727. The electrical signal generated by the piezoelectric sheet can facilitate the staff to judge whether the detection mechanism 74 and the second welding head 71 are perpendicular to the sliding frame 72, so as to facilitate the subsequent work of the detection mechanism 74 and the second welding head 71. In addition, compared with using a motor to drive the rotating sleeve 75 to rotate, the present invention can reduce the width of the sliding frame 72 to avoid the diameter of the opening end of the tank body being too small, and the sliding frame 72 cannot be extended into the tank body.

[0041] A tank welding process of this embodiment includes the following steps:

[0042] S1: Clamp the lower end of the can body by the chuck 5, clamp the upper end of the can body by the fastening mechanism 6, and then move the fastening mechanism 6 so that the upper end of the can body contacts the lower end of the can body;

[0043] S2: Turn on the linear motor to align the first welding head 3 with the part to be welded;

[0044] S3: Turn on the first welding head 3 and the driving motor 43, drive the upper end and the lower end of the tank body to rotate through the driving motor 43, and weld the to-be-welded portion through the first welding head 3.

[0045] The working principle of the present invention is as follows: the lower end of the tank body is clamped by the chuck 5, the upper end of the tank body is clamped by the fastening mechanism 6, the detection mechanism 74 and the second welding head 71 are extended into the tank body by the screw assembly and the sliding frame 72, and then the reversing assembly is opened to make the two sets of telescopic rods 73 perpendicular to the sliding frame 72. At this time, the two sets of telescopic rods 73 are opened, so that the second welding head 71 and the detection mechanism 74 can be close to the part to be welded, and the upper and lower ends of the chuck 5 and the tank body are controlled to rotate by the driving mechanism, and the first welding head 3 is used to perform all-round welding on the part to be welded, and the welded seam is detected by the detection mechanism 74. When it is found that the weld is not fully penetrated, When welding a seam, a second welding is performed on the weld seam through the second welding head 71. During the welding process, the third gear 49 will work synchronously with the sensing component. On the one hand, the sensing component can detect whether the rotation speed of the chuck 5 and the tank body is stable and qualified, so as to avoid problems such as uneven weld quality and deformation. At the same time, the sensing component can also purify the lubricating fluid in the transmission groove, thereby increasing the service life of the drive mechanism and avoiding vibration of the chuck 5 and the tank body during rotation, thereby ensuring the welding effect. When the drive motor 43 fails, the staff can drive the third gear 49 and the chuck 5 to rotate through the crank handle and the worm gear assembly 47, so as to improve the fault tolerance of the present invention.

[0046] Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and vary the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A hydrogen storage tank welding device, characterized in that: The welding device comprises a machine body (1), a first fixing seat (2), a driving seat (4), a fastening mechanism (6) and a supporting seat (7); the first fixing seat (2) is arranged on the inner wall of the machine body (1); the first fixing seat (2) and the machine body (1) are connected via a linear motor; a first welding head (3) is arranged below the first fixing seat (2); the driving seat (4) and the supporting seat (7) are arranged at opposite ends inside the machine body (1); and the fastening mechanism (6) is arranged between the driving seat (4) and the supporting seat (7). The fastening mechanism (6) and the support seat (7) are both movably mounted inside the body (1) via a slide rail; a chuck (5) is provided at one end of the drive seat (4) close to the fastening mechanism (6); a drive mechanism is provided inside the drive seat (4); the chuck (5) is controlled to rotate by the drive mechanism; a sliding frame (72) is provided inside the support seat (7); a detection mechanism (74) is provided at one end of the sliding frame (72) close to the fastening mechanism (6); the welding quality of the tank body is detected by the detection mechanism (74); The fastening mechanism (6) comprises a base (61) and a fixing cylinder (63); the base (61) is movably mounted on a slide rail inside the body (1); the fixing cylinder (63) is movably mounted above the base (61) via an annular slider (62); a clamping claw (64) is provided inside the fixing cylinder (63); the clamping claw (64) is connected to the fixing cylinder (63) via a telescopic assembly; the driving mechanism comprises a driving motor (43), a first gear (44), a second gear (48), and a third gear (49). , a worm gear assembly (47), a transmission groove and a crank, the first gear (44), the second gear (48) and the third gear (49) are all arranged in the transmission groove, the first gear (44) and the second gear (48) are all meshed with the third gear (49), the crank is arranged on the outside of the drive seat (4), the drive motor (43) is connected to the first gear (44), the third gear (49) is connected to the chuck (5), and the second gear (48) is connected to the crank via the worm gear assembly (47); An induction component is provided at one end of the drive seat (4) away from the chuck (5), one end of the induction component is connected to the third gear (49) via a speed increasing gear box (42), and the other end of the induction component is connected to the transmission groove via a liquid guide groove, and lubricating liquid is provided in the transmission groove; The sliding frame (72) is movably mounted inside the support seat (7) via a screw assembly; a rotating sleeve (75) is provided at one end of the sliding frame (72) close to the fastening mechanism (6); the rotating sleeve (75) is connected to the sliding frame (72) via a reversing assembly; telescopic rods (73) are provided at both left and right ends of the rotating sleeve (75); a second welding head (71) is provided at the working end of one group of the telescopic rods (73); a detection mechanism (74) is provided at the working end of another group of the telescopic rods (73); and a cleaning block is wrapped around the outer side of the detection mechanism (74); The reversing assembly comprises a liquid storage tank (721), a cylinder (722), a movable tank (723), a rotating shaft (724) and an arc-shaped tank (727); the rotating shaft (724) is fixedly connected to the rotating sleeve (75) and penetrates the rotating sleeve (75); hydraulic oil and a piston are arranged in the liquid storage tank (721); the piston is connected to the working end of the cylinder (722); the liquid storage tank (721) is connected to the movable tank (723); the movable tank (723) is connected to the rotating sleeve (75); ) is provided with a movable plate (725) and an arc-shaped rod (726), the movable plate (725) is fixedly connected to the rotating shaft (724), one end of the arc-shaped rod (726) is arranged in the arc-shaped groove (727), the other end of the arc-shaped rod (726) is arranged in the movable groove (723) and fixedly connected to the movable plate (725), an induction spring is arranged in the arc-shaped groove (727), and a piezoelectric sheet is arranged at one end of the arc-shaped rod (726) close to the induction spring.

2. A hydrogen storage tank welding device according to claim 1, characterized in that: A linkage assembly is arranged inside the first gear (44), the linkage assembly comprising a storage slot, an electromagnet (441) and a linkage block (442); the electromagnet (441) is arranged at an end of the storage slot away from the main shaft (431) of the driving motor; the linkage block (442) is arranged at an end of the storage slot close to the main shaft (431) of the driving motor; a positioning slot is arranged on the main shaft (431) of the driving motor; an end of the linkage block (442) close to the electromagnet (441) is magnetic; and the linkage block (442) is connected to the storage slot via a compression spring rod.

3. A hydrogen storage tank welding device according to claim 2, characterized in that: The induction assembly comprises a first induction chamber (41), an eccentric wheel (45) and a second induction chamber (46); the eccentric wheel (45) is arranged between the first induction chamber (41) and the second induction chamber (46); the eccentric wheel (45) is connected to a third gear (49) via a speed increasing gear box (42); ends of the first induction chamber (41) and the second induction chamber (46) that are away from each other are connected to a transmission groove via a filter cartridge and a liquid guide groove; the filter cartridge is magnetic; a first induction plate (411) is arranged in the first induction chamber (41); and the second induction chamber ( A second induction plate (461) is arranged in the first induction chamber (41), the first induction plate (411) is connected to the first induction chamber (41) via a first return spring rod, the second induction plate (461) is connected to the second induction chamber (46) via a second return spring rod, and two groups of conductive sheets are also arranged in the first induction chamber (41), one group of the conductive sheets is fixedly mounted on the first induction plate (411), and the other group of the conductive sheets is fixedly mounted at one end of the first induction chamber (41) close to the eccentric wheel (45), and the two groups of the conductive sheets are connected via a conductive rod.

4. A hydrogen storage tank welding device according to any one of claims 1 to 3, characterized in that: The first welding head (3) comprises a connecting seat (31), a first sleeve (32), a second sleeve (33), and a first laser emitter (34); the first sleeve (32) is arranged below the connecting seat (31); the second sleeve (33) is arranged inside the first sleeve (32); the first laser emitter (34) is arranged inside the second sleeve (33); an air bag (321) is arranged at the lower end of the first sleeve (32); one side of the upper end of the first sleeve (32) is connected to an external gas supply device; the other side of the upper end of the first sleeve (32) is connected to an external air suction device; and a filter is arranged inside the first sleeve (32).

5. The welding process using the hydrogen storage tank welding equipment according to claim 2 is characterized in that: The tank welding process comprises the following steps: S1: clamping the lower end of the can body by means of a chuck (5), clamping the upper end of the can body by means of a fastening mechanism (6), and then moving the fastening mechanism (6) so that the upper end of the can body contacts the lower end of the can body; S2: turning on the linear motor so that the first welding head (3) is aligned with the part to be welded; S3: turning on the first welding head (3) and the driving motor (43), driving the upper end and the lower end of the tank body to rotate via the driving motor (43), and welding the portion to be welded via the first welding head (3).

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