Power generation electric welding machine driven by gasoline engine

Abstract

The utility model discloses a power generation electric welding machine driven by a gasoline engine, which comprises a rack, a gasoline engine component, a medium-frequency permanent magnet generator component, a power frequency inverter component and a welding power supply component are mounted on the rack, and the power frequency inverter component and the welding power supply component are positioned on different sides of the gasoline engine component. According to the utility model, the power frequency inverter assembly and the welding power supply assembly are separated by the gasoline engine assembly, and the power frequency inverter assembly and the welding power supply assembly which are separated from each other have strong anti-interference capability, so that the mutual peak interference of the power frequency inverter assembly and the welding power supply assembly can be avoided, and the power frequency inverter assembly and the welding power supply assembly can be separately and independently debugged; and interference is avoided. Besides, during assembly, the power frequency inverter assembly and the welding power supply assembly can be separately assembled in parallel, so that assembly procedures can be reduced, assembly errors can be avoided, and maintenance and overhaul can be facilitated.

Description

Technical Field

[0001] The utility model relates to a power generation welding machine, in particular to a power generation welding machine driven by a gasoline engine. Background Art

[0002] A power generation welding machine is a machine integrating an engine and a welding machine. When performing welding operations outdoors without power supply, such as in oil and gas field exploitation, oil and natural gas pipeline network construction, water supply pipeline construction, mobile operations on railways and highways, electrification construction infrastructure construction and other scenarios, a mechanical drive power generation welding machine is required to output AC / DC welding power that meets the welding characteristic requirements and industrial frequency AC power that meets the requirements of electric tools. The power source, motor, welding module, fuel tank, operation panel, etc. are installed on a rigid base, and together with the outer shell structure, they form a complete sealed or semi-open complete device. It has various welding and cutting processes such as manual arc welding, cellulose downhand welding, TIG, flux-cored semi-automatic welding, carbon arc gouging, plasma cutting, etc., and has the characteristics of abundant 50Hz / 60Hz sine wave AC power supply. Outdoor construction has some common basic quality requirements for power generation welding machines, such as excellent welding performance, high reliability and stability, good portability, abundant auxiliary power supply, simultaneous use of power generation and welding, friendly maintenance and repair characteristics, etc.

[0003] Chinese patent document CN207255449U discloses a high-power inverter welding machine, belonging to the technical field of inverter welding machines, including a pushing base, a push rod, a wheel bracket, wheels, support legs, a battery box, a charging port, a welding machine, a heat dissipation port, a negative output wire, a ground connection, a positive output wire, a welding clamp, a wire, an inverter power control box, a current inverter, a transformer and a battery pack. The push rod is arranged on the right side of the pushing base, the wheel brackets are arranged at the front and rear ends of the lower side of the pushing base, the wheels are arranged on the wheel brackets, and the support legs are arranged at the lower right corner of the pushing base. The technical effect of the utility model is that the device is provided with a pushable base at a relatively high position from the ground, and multiple groups of batteries are arranged under the base, and the batteries are connected in parallel to maximize the current flow during operation, and the power is changed into alternating current by the inverter and can be efficiently supplied to the high-power welding machine for use, so as to meet some requirements for increasing the power of the inverter welding machine.

[0004] In this prior art, a metal isolation plate is used to separate the welding machine and the inverter power control box, which can effectively prevent the electromagnetic fields generated by the welding machine and the inverter power control box from affecting each other. However, during the use process, there is still interference in the power generation welding machine, which will affect the normal use of the power generation welding machine. Content of the Utility Model

[0005] The utility model aims to solve the problem of interference existing in the existing power generation welding machines, and provides a power generation welding machine driven by a gasoline engine, which comprises a frame, on which a gasoline engine assembly, an intermediate-frequency permanent magnet generator assembly, a power-frequency inverter assembly and a welding power supply assembly are installed, wherein: the power-frequency inverter assembly and the welding power supply assembly are located on different sides of the gasoline engine assembly.

[0006] In this solution, after the power-frequency inverter assembly and the welding power supply assembly are respectively located on different sides of the gasoline engine assembly, the power-frequency inverter assembly and the welding power supply assembly are separated by the gasoline engine assembly. The mutually isolated power-frequency inverter assembly and welding power supply assembly have strong anti-interference ability, thus avoiding the mutual spike interference between the power-frequency inverter assembly and the welding power supply assembly, and can also be separately and independently debugged without interfering with each other. In addition, during assembly, the power-frequency inverter assembly and the welding power supply assembly can also be assembled in parallel separately, which can reduce the assembly process, avoid assembly mistakes, and is also convenient for maintenance and repair.

[0007] Preferably, the power source includes a gasoline engine assembly and an intermediate-frequency permanent magnet generator assembly, and the power source, the welding power supply assembly and the power-frequency inverter assembly are arranged in a triangular pyramid structure on the frame. In this solution, after adopting the triangular pyramid structure, operations can be carried out on the power source, the welding power supply assembly and the power-frequency inverter assembly respectively from different sides, so as to realize all-round maintenance, repair and assembly without dead angles on a single side.

[0008] Preferably, the air inlets of the gasoline engine assembly, the welding power supply assembly and the power-frequency inverter assembly are located on the same side, and the air outlets of the gasoline engine assembly and the welding unit assembly are located on the same side. In this solution, the reliability of heat dissipation of each component can be ensured and the mutual interference between hot and cold air can be avoided.

[0009] Preferably, the gasoline engine assembly includes a muffler, and the air outlet of the power-frequency inverter assembly is arranged towards the muffler. This solution can realize the multi-stage utilization of wind energy.

[0010] Preferably, the air outlet of the power-frequency inverter assembly and the air outlet of the welding power supply are at a 90° angle to each other. This solution can realize the isolation of the air inlet and outlet, and avoid the mutual interference between hot and cold air.

[0011] Preferably, the frame includes a framework and a wheel assembly, the framework is a round steel enveloped framework, and the wheel assembly is arranged at the bottom of the framework. This solution can facilitate the movement of the power generation welding machine.

[0012] Preferably, the wheel assembly includes a wheel axle and wheels at both ends of the wheel axle, and a cross beam with mounting holes is arranged at the bottom of the framework, and the wheel axle is connected to the cross beam through mounting lugs. This solution facilitates the installation and disassembly of the wheel assembly.

[0013] Preferably, the frame further includes support feet, which are connected to the cross beam through mounting holes. This solution can implement different whole-machine walking solutions according to different scenario usage requirements. With the wheel assembly, a whole-machine four-wheel walking solution can be achieved, which is suitable for outdoor uneven ground construction operations; with the support feet and the wheel assembly, a walking solution with wheels and support feet can be achieved, which is suitable for construction operations on cement roads.

[0014] Preferably, mounting points are provided in the X-axis and Y-axis directions of the frame, and the welding power supply assembly is mounted on the frame through the mounting points. In this solution, the welding power supply assembly is locked alternately in the X-axis and Y-axis directions to ensure the stable connection of the welding power supply assembly, which is easy to load and unload.

[0015] The utility model has the following beneficial effects:

[0016] 1. The industrial frequency inverter assembly and the welding power supply assembly are separated by the gasoline engine assembly. The mutually isolated industrial frequency inverter assembly and welding power supply assembly have strong anti-interference ability, so as to avoid the mutual spike interference between the industrial frequency inverter assembly and the welding power supply assembly, and can also be separately and independently debugged without interfering with each other. In addition, during assembly, the industrial frequency inverter assembly and the welding power supply assembly can also be assembled in parallel separately, which can reduce the assembly process, avoid assembly mistakes, and is also convenient for maintenance and repair.

[0017] 2. It is possible to operate the power source, the welding power supply assembly, and the industrial frequency inverter assembly respectively from different sides, so as to achieve all-round dead-angle-free single-side maintenance, repair, and assembly.

[0018] 3. The cold and hot air ducts are orderly and mutually isolated, without forming any turbulent flow and heat source interference inside, which can ensure the reliability of heat dissipation of each component and avoid the mutual interference of cold and hot air, and realize the multi-stage utilization of wind energy, so that the whole machine can provide better power output in a high-temperature environment and extend the service life of the whole machine.

[0019] 4. Different whole-machine walking solutions can be implemented according to different scenario usage requirements. With the wheel assembly, a whole-machine four-wheel walking solution can be achieved, which is suitable for outdoor uneven ground construction operations; with the support feet and the wheel assembly, a walking solution with wheels and support feet can be achieved, which is suitable for construction operations on cement roads.

[0020] 5. The welding power supply assembly is locked alternately in the X-axis and Y-axis directions to ensure the stable connection of the welding power supply assembly, which is easy to load and unload. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram ① of an embodiment of a gasoline engine-driven power generation welding machine of the utility model;

[0022] Figure 2Schematic diagram ② of an embodiment of a gasoline engine-driven power generation welding machine;

[0023] Figure 3 Schematic diagram ③ of an embodiment of a gasoline engine-driven power generation welding machine;

[0024] Figure 4 Assembly schematic diagram of an embodiment of a gasoline engine-driven power generation welding machine;

[0025] Figure 5 Schematic diagram of the heat dissipation air duct of an embodiment of a gasoline engine-driven power generation welding machine;

[0026] Figure 6 Assembly schematic diagram of the frame in an embodiment of a gasoline engine-driven power generation welding machine;

[0027] Figure 7 Assembly schematic diagram of the welding power source and the frame in an embodiment of a gasoline engine-driven power generation welding machine. Specific implementation manner

[0028] The following is a further detailed description through specific implementation manners:

[0029] 1. Definition

[0030] Gasoline engine assembly: It includes the gasoline engine body, vibration damping pads, starting and speed regulating mechanism, air filter, muffler, fuel circuit, and fuel tank. The gasoline engine is the power source, burning gasoline to convert chemical energy into mechanical energy. The outer rotor of the medium-frequency permanent magnet generator is rotated by the crankshaft to output mechanical energy externally.

[0031] Medium-frequency permanent magnet generator assembly: It includes a motor bracket, stator and rotor, heat dissipation impeller and air guide cover. The stator is formed by stacking silicon steel sheets with excellent magnetic conductivity. Grooves and salient poles of a certain shape are evenly distributed along the radial direction around the steel sheets. The main power winding and various control windings are wound on the stator. The stator is fixed to the gasoline engine through the motor bracket to form a fixed structural dimension relationship between the stator and the output shaft. The rotor and the crankshaft are in a coaxial and directly connected relationship, and permanent magnet tiles are fixed on the outer ring of the rotor. A gap that meets the assembly and high-efficiency electromagnetic conversion efficiency is designed between the rotor magnetic tiles and the stator salient poles to ensure efficient transfer of magnetic field energy during rotor rotation without mechanical collision. The heat dissipation impeller blows air to the stator and rotor through the positive pressure generated by rotation. The air guide cover is provided with an air outlet and an air inlet. The air inlet is connected to the industrial frequency inverter assembly, and the air outlet faces the muffler to dissipate heat from the muffler by blowing air. The stator cuts the rotating magnetic field of the rotor to induce a three-phase AC power supply on the stator winding. It serves as the common power input for the industrial frequency inverter assembly and the welding power supply assembly.

[0032] Power frequency inverter assembly: It consists of an inverter module, a heat dissipation base plate and a ventilation hose. The three-phase alternating current of the stator enters the power frequency inverter module, and the inverter module converts the three-phase alternating current into a sinusoidal alternating current with a specific frequency and voltage for output. The inverter module is installed on the heat dissipation base plate, forming a closed air duct with the heat dissipation base plate. Air enters from one side, and the other side is connected to the ventilation hood through the ventilation hose. When the cooling impeller rotates, negative pressure is generated to extract air from the inverter heat dissipation air duct, thereby dissipating heat from the inverter.

[0033] The welding power supply assembly is an independent power module assembly that can be freely disassembled. When paired with different power generation units, it can achieve power outputs of different levels. It includes an output socket, a control panel unit, and a welding unit box. The welding power supply converts three-phase alternating current into controllable direct current for welding through rectification and inversion.

[0034] Round steel: It refers to a solid long steel bar with a circular cross-section.

[0035] 2. The reference numerals in the drawings of the specification include: frame 1, power frequency inverter assembly 2, welding power supply assembly 3, medium-frequency permanent magnet generator assembly 4, wheel assembly 5, gasoline engine assembly 6, fuel tank 7, support feet 8, wheels 9, wheel shafts 10, mounting lugs 11, mounting holes 12.

[0036] The embodiment is basically as shown in the attached Figure 1 , Figure 2 and Figure 3 shown: A gasoline engine-driven welding generator, including a frame 1, on which a gasoline engine assembly 6, a medium-frequency permanent magnet generator assembly 4, a power frequency inverter assembly 2 and a welding power supply assembly 3 are installed. Mounting points are provided in the X-axis and Y-axis directions of the frame 1. As shown in Figure 7 , it includes four mounting points A1, A2, A3 and A4. The welding power supply assembly 3 is installed on the frame 1 through the four mounting points.

[0037] As shown in Figure 2 , Figure 3 and Figure 4 shown, the power frequency inverter assembly 2 and the welding power supply assembly 3 are located on different sides of the gasoline engine assembly 6. The power sources include the gasoline engine assembly 6 and the medium-frequency permanent magnet generator assembly 4. The power sources, the welding power supply assembly 3 and the power frequency inverter assembly 2 are arranged in a triangular pyramid structure on the frame 1. The gasoline engine assembly 6 includes a fuel tank 7, and the fuel tank 7 is located at the top of the frame 1. After removing the fuel tank 7 at the top, the gasoline engine assembly 6, the medium-frequency permanent magnet generator assembly 4, the power frequency inverter assembly 2 and the welding power supply assembly 3 are exposed. At this time, operations can be carried out from all around the welding generator, which is convenient for assembly and subsequent maintenance.

[0038] The air inlets of the gasoline engine assembly 6, the welding power supply assembly 3, and the industrial frequency inverter assembly 2 are located on the same side. The air outlets of the gasoline engine assembly 6 and the welding unit assembly are located on the same side. The air outlet of the industrial frequency inverter assembly 2 and the air outlet of the welding power supply are perpendicular to each other at 90°. The gasoline engine assembly 6 includes a muffler. The industrial frequency inverter assembly 2 includes a cooling impeller. The air outlet of the industrial frequency inverter assembly 2 is arranged towards the muffler. Specifically, the hot air of the industrial frequency inverter assembly 2 is extracted by the cooling impeller and then diverted to cool the muffler, realizing multi-stage utilization of wind energy, such as Figure 5 shown.

[0039] such as Figure 6 shown, the frame 1 includes a framework, support feet 8, and a wheel assembly 5. The framework is a round steel envelope framework. The wheel assembly 5 is arranged at the bottom of the framework. The wheel assembly 5 includes a wheel axle 10 and wheels 9 at both ends of the wheel axle 10. The bottom of the framework is provided with a crossbeam with mounting holes 12. The wheel axle 10 is connected to the crossbeam through mounting lugs 11. The support feet 8 are connected to the crossbeam through the mounting holes 12. The mounting holes 12 can accommodate the connection of the support feet 8 and the mounting lugs 11.

[0040] The above are only embodiments of the present invention. Specific structures and common knowledge such as characteristics well known in the art are not described in detail here. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the filing date or the priority date, can learn all the existing technologies in this field, and have the ability to apply conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A gasoline engine-driven welding generator, comprising a frame, on which a gasoline engine assembly, an intermediate frequency permanent magnet generator assembly, a power frequency inverter assembly and a welding power supply assembly are installed, characterized in that: The industrial frequency inverter assembly and the welding power supply assembly are located on different sides of the gasoline engine assembly.

2. The gasoline engine-driven welding generator according to claim 1, wherein: A power source is further provided on the frame. The power source includes the gasoline engine assembly and the medium frequency permanent magnet generator assembly. The power source, the welding power supply assembly, and the industrial frequency inverter assembly are arranged in a triangular pyramid structure on the frame.

3. The gasoline engine-driven welding generator according to claim 2, characterized in that: The air inlets of the gasoline engine assembly, the welding power supply assembly, and the industrial frequency inverter assembly are on the same side, and the air outlets of the gasoline engine assembly and the welding power supply assembly are on the same side.

4. The gasoline engine-driven welding generator according to claim 3, characterized in that: The gasoline engine assembly includes a muffler, and the air outlet of the industrial frequency inverter assembly is arranged facing the muffler.

5. The gasoline engine-driven power generation welding machine according to claim 4, wherein: The air outlet of the industrial frequency inverter assembly and the air outlet of the welding power supply assembly are at a 90° angle to each other.

6. The gasoline engine-driven welding generator according to any one of claims 1-5, characterized in that: The frame includes a framework and a wheel assembly. The framework is a round steel enveloped framework, and the wheel assembly is arranged at the bottom of the framework.

7. The gasoline engine-driven power generation welding machine according to claim 6, wherein: The wheel assembly includes a wheel axle and wheels at both ends of the wheel axle. A cross beam with mounting holes is provided at the bottom of the framework, and the wheel axle is connected to the cross beam through mounting lugs.

8. The gasoline engine-driven power generation welding machine according to claim 7, characterized in that: The frame further includes support feet, and the support feet are connected to the cross beam through the mounting holes.

9. The gasoline engine-driven power generation welding machine according to claim 8, characterized in that: Mounting points are provided in the X-axis and Y-axis directions of the frame, and the welding power supply assembly is mounted on the frame through the mounting points.

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