Compressor-equipped engine generator welding machine

Abstract

The present invention improves the portability of an engine generator / welder equipped with a compressor, and improves the maintainability of the compressor.　An engine generator / welder equipped with a compressor comprises: an engine; a power generator driven by the engine; the compressor for using compressed air; a first housing accommodating the engine and the power generator; and a second housing accommodating the compressor. The first housing has a connection space for detachably connecting the second housing.

Description

[Technical Field]

[0001] The present invention relates to an engine-driven generator-welder equipped with a compressor. [Background technology]

[0002] Conventionally, there is known an engine generator-welder that converts AC output of a generator driven by an engine into DC to generate welding output. In addition, gouging is sometimes performed as a form of welding, and a compressor-equipped engine generator-welder is known in which a compressor is mounted on the engine generator-welder to obtain the compressed air required for this (see Patent Document 1 below).

[0003] Conventional compressor-equipped engine generator-welders house the engine, generator-welder, and compressor in a single housing, and are equipped with a gearbox that connects the generator to the engine and also connects the engine or generator-welder to the compressor.The driving force of the engine is transmitted to the generator-welder and compressor via this gearbox. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-276115 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional compressor-equipped engine generator welding machines, the engine, generator welding machine, and compressor are housed in a single housing, which means that the weight of the housing, including its contents, is inevitably quite large, which poses the problem of requiring a great deal of effort to move the machine during transportation.

[0006] Furthermore, in conventional compressor-equipped engine generator welding machines, the compressor is driven by the engine's power, so the compressor and engine are mechanically connected. This means that when performing compressor maintenance, the gearbox must be disassembled or other tasks must be performed to disconnect the mechanical connection between the compressor and engine, making maintenance difficult.

[0007] Furthermore, in conventional compressor-equipped engine generator welding machines, the compressor and engine sometimes share an air cleaner, etc. In such cases, the engine cannot be started during compressor maintenance. As a result, the engine-driven generator welding machine cannot be used during compressor maintenance, and welding work must be stopped. This creates a problem where on-site work is stopped for an extended period of time when compressor maintenance begins.

[0008] There are times when you want to check the operation of the compressor independently, such as during maintenance, but in the case of a conventional compressor-equipped engine generator-welder, the compressor is connected to the engine, so you cannot check the operation of the compressor unless you start the engine. This has created the problem that it is not easy to check the operation of the compressor independently, such as during maintenance.

[0009] The present invention addresses these issues by improving the portability of compressor-equipped engine generator-welders, improving the ease of maintaining the compressor in compressor-equipped engine generator-welders, enabling welding work to be continued even during compressor maintenance in compressor-equipped engine generator-welders, thereby preventing on-site work from being prolonged due to maintenance, and enabling easy operation checks of the compressor alone in compressor-equipped engine generator-welders. [Means for solving the problem]

[0010] In order to solve these problems, the compressor-equipped engine generator-welder of the present invention has the following configuration. A compressor-equipped engine generator-welder is provided with an engine and a power generator driven by the engine, and is equipped with a compressor for utilizing compressed air, the generator-welder comprising a first housing in which the engine and the power generator are housed, and a second housing in which the compressor is housed, outside of , the muffler portion of the engine is accommodated In the first housing A compressor-equipped engine power-generating welding machine, characterized in that it has a connecting space below the protruding portion for detachably connecting the second housing, the first housing is provided with intake and exhaust ports for the engine and the power generator, the lower part of the protruding portion is provided with intake and exhaust ports for the compressor, and the protruding portion is provided with a partition wall above the intake and exhaust port for the compressor to separate it from the connecting space. [Effects of the Invention]

[0011] With a compressor-equipped engine generator welding machine having these features, portability can be improved by separating the first and second housings, and maintenance of the compressor can be improved by separating the second housing containing the compressor from the first housing.

[0012] Furthermore, by making it possible to drive the engine and power generator in the first housing separately from the second housing, welding work can be continued even during compressor maintenance, thereby avoiding the need for prolonged on-site maintenance work, and by providing a separate drive source for the compressor in the second housing, it is easy to check the operation of the compressor alone. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view showing the appearance of a compressor-equipped engine power-generating welding machine according to an embodiment of the present invention; [Figure 2]1 is an explanatory view (perspective view) showing a state in which a first housing and a second housing are separated in a compressor-equipped engine power-generating welder according to an embodiment of the present invention; [Figure 3] 1 is an explanatory diagram (side view) showing a state in which a first housing and a second housing are separated in a compressor-equipped engine power-generating welder according to an embodiment of the present invention; [Figure 4] 1 is an explanatory diagram illustrating the internal configuration of a compressor-equipped engine power generator / welder according to an embodiment of the present invention; [Figure 5] 2 is an explanatory diagram showing an example of a side wall (front wall) of a compressor-equipped engine power-generating welding machine according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different drawings denote parts with the same functions, and duplicated descriptions in each drawing will be omitted as appropriate.

[0015] As shown in Figures 1 to 3, a compressor-equipped engine power-generating welder 1 according to an embodiment of the present invention includes a first housing 10 and a second housing 20. The first housing 10 houses the engine 2 and power generator 3 shown in Figure 4. The second housing 20 houses the compressor 4 shown in Figure 4.

[0016] The first housing 10 and the second housing 20 can be connected together as shown in Fig. 1, and can also be separated from each other as shown in Fig. 2 and Fig. 3. In the connected state shown in Fig. 1, the second housing 20 is connected and fixed to the first housing 10 with fastening members (bolts, screws, etc.) 30. Then, by releasing the connection by the fastening members 30, the second housing 20 can be separated from the first housing 10.

[0017] The first housing 10 has a protruding portion 10B that protrudes partially from a substantially rectangular parallelepiped main body 10A. The main body 10A houses the main body 2A of the engine 2 and the power generator 3, and the protruding portion 10B houses the muffler portion 2B of the engine 2 (see FIG. 4). A connecting space 10C is formed below the protruding portion 10B of the first housing 10, and the second housing 20 is detachably connected to this connecting space 10C.

[0018] Here, when accommodating the engine 2 and the power generator 3, the first housing 10 is provided with a base 10D on which the main body 2A of the engine 2 and the power generator 3 are placed, and the main body 10A is formed on the base 10D, and a protruding portion 10B protrudes from a position offset from the base 10D so as to cover the muffler portion 2B protruding laterally from the main body 2A of the engine 2. As a result, the base 10D does not exist below the protruding portion 10B, and a dead space is formed below the protruding portion 10B in the first housing 10 alone. This dead space is used to form a connecting space 10C for detachably connecting the second housing 20.

[0019] In the illustrated example, a connecting space 10C is formed outside the first housing 10. Unlike this, A connecting space 10C is formed in a part of the inside of the first housing 10. Then, The first housing 10 is formed into a substantially rectangular parallelepiped, and a dead space formed inside the first housing 10 is used to form a connection space 10C for connecting the second housing 20. will be formed.

[0020] The first housing 10 is provided with intake and exhaust ports at necessary locations. An exhaust port 10T1 for the engine 2 and the power generator 3 is provided on the top surface of the first housing 10, and an intake port 10T2 for the engine 2 and the power generator 3 is provided on the side surface of the first housing 10. An exhaust port 10T3 and an intake port 10T4 for the compressor 4 are provided at the bottom of the protruding portion 10B of the first housing 10. The first housing 10 is provided with opening / closing doors 10P and 10Q for performing maintenance on the engine 2 and the power generator 3 inside the main body 10A, and an opening / closing door 10R for performing maintenance on the compressor 4 is provided on the protruding portion 10B.

[0021] As shown in Fig. 2, the second housing 20 is a substantially rectangular parallelepiped housing frame, and has a size substantially equal to the connecting space 10C provided in the first housing 10. As a result, when the second housing 20 is connected to the connecting space 10C of the first housing 10, the overall outline of the compressor-mounted engine power-generating welding machine 1 becomes a substantially rectangular parallelepiped, as shown in Fig. 1. As a result, the compressor-mounted engine power-generating welding machine 1 can compactly house the engine 2, power generator 3, and compressor 4 within the first housing 10 and the second housing 20, and no dead space is created around them.

[0022] 2, the second housing 20 houses a main body 4A of the compressor 4 and an electric motor 4B that serves as a drive source for the compressor 4, and the main body 4A and the electric motor 4B are connected by a necessary power transmission mechanism 4C. An air tank 4T is provided above the main body 4A of the compressor 4, and this air tank 4T is arranged so as to protrude upward from the frame of the second housing 20. An exhaust port and an intake port for the compressor 4 are also provided in the second housing 20 at appropriate locations not shown.

[0023] As shown in Fig. 4, inside the compressor-equipped engine generator-welder 1, a first housing space 1A is formed inside the main body 10A and protrusion 10B of the first housing 10, and this first housing space 1A houses the engine 2 and the power generator 3. The engine 2 and the power generator 3 are connected in the first housing space 1A via a power transmission unit (not shown), and the power generator 3 is driven by the driving force of the engine 2.

[0024] A second housing space 1B is formed in the second housing 20 and in a part of the protruding portion 10B of the first housing 10. The second housing space 1B accommodates a compressor 4 including an air tank 4T.

[0025] A partition wall 1A1 is provided below the protruding portion 10B of the first housing 10. The partition wall 1A1 is provided on the first housing 10 side and separates the connecting space 10C. An exhaust port 10T3 and an intake port 10T4 for the compressor 4 are provided below the partition wall 1A1 in the protruding portion 10B of the first housing 10.

[0026] By providing the partition wall 1A1, the air tank 4T, which is disposed so as to protrude above the second housing 20, is spatially separated from the muffler section 2B of the engine 2 within the protruding section 10B of the first housing 10. This prevents the heat of the muffler section 2B from adversely affecting the air tank 4T.

[0027] Furthermore, partition wall 1A1 maintains the heat balance within first housing 10. That is, due to the presence of partition wall 1A1, exhaust port 10T1 and intake port 10T2 for engine 2 and power generator 3 provided in first housing 10 can achieve the same heat balance whether second housing 20 is connected to first housing 10 or separated from first housing 10. This allows engine 2 and power generator 3 to operate in the same way both when second housing 20 is connected to first housing 10 and when separated from first housing 10. This allows engine 2 and power generator 3 to be driven and operated independently as an engine-powered welding machine even when second housing 20 is separated.

[0028] A piping space 1C is formed in the base portion 10D of the first housing 10. An air pipe 6 for supplying compressed air is arranged in the piping space 1C. An air pipe coupler 6A is provided at the end of the air pipe 6 on the second housing space 1B side, and an air discharge end 4P of the compressor 4 is detachably connected to this air pipe coupler 6A. The other end of the air pipe 6 is connected to an air discharge port 6B provided in a side wall (e.g., a front wall) 11 of the first housing 10. Note that, in the illustrated example, the piping space 1C is provided in the base portion 10D, but the piping space 1C may be provided anywhere in the first housing 10. For example, the piping space 1C may be formed by utilizing an empty space in the main body portion 10A of the first housing 10.

[0029] The first housing 10 is also provided with a power supply wiring connection part 7 for supplying the power generation output of the power generation body 3 to the electric motor 4B of the compressor 4. One end of a power supply wiring 8 is connected to the power generation output terminal of the power generation body 3, and the other end of the power supply wiring 8 is connected to the power supply terminal of the motor of the compressor 4. The power supply wiring connection part 7 is also detachably connected to the power supply wiring connection part 7.

[0030] When separating the second housing 20 from the first housing 10, the fastening members 30 connecting the first housing 10 and the second housing 20 are removed, the power supply wiring 9 is disconnected from the power supply wiring connection portion 7, and the air discharge end 4P of the compressor 4 is disconnected from the air piping coupler 6A, thereby completely separating the second housing 20 from the first housing 10. Then, by connecting the terminal of the power supply wiring 9 to another power source, the compressor 4 housed in the second housing 20 can be operated independently.

[0031] An operation panel as shown in FIG. 5 is formed on a side wall (e.g., a front wall) 11 of the first housing 10. As described above, an air outlet 6B is provided on the side wall 11 of the first housing 10, and one end of an air hose 40 for gouging is connected to the air outlet 6B as shown in FIG. 4. A welding output terminal 3A of the power generator 3 is also provided on the side wall 11 of the first housing 10, and one end of a welding cable 41 is connected to the negative side of the welding output terminal 3A as shown in FIG. 4. Furthermore, a power output terminal 3B of the power generator 3 can be provided on the side wall 11 of the first housing 10 in order to use the compressor-mounted engine power generator-welder 1 as a power generator.

[0032] In the example shown in FIG. 5, in addition to the welding output terminal portion 3A, the power output terminal portion 3B, and the air discharge port 6B described above, the side wall 11 of the first housing 10 is provided with a fuel supply port 11A, a fuel drain port 11B, an oil guard drain port 11C, etc., and further with an adjustment panel 11D for performing various adjustments, etc.

[0033] When gouging is performed using this compressor-equipped engine generator-welder 1, as shown in Figure 4, a gouging rod G is connected to a gouging torch 42 to which the ends of the air hose 40 and welding cable 41 are connected, and welding is performed while blowing compressed air through the air hose 40 onto the base metal (object to be welded) M. At this time, one end of an earth cable 43 is connected to the base metal M via an earth grip 44, and the other end of the earth cable 43 is connected to, for example, the positive side of the welding output terminal 3A.

[0034] In this compressor-equipped engine generator-welder 1, the second housing 20 is separably connected to the first housing 10, so the first housing 10 and the second housing 20 can be transported separately, improving the portability of the machine. Also, the second housing 20 is connected to a connecting space 10C provided in the dead space below the protruding portion 10B of the first housing 10, so the engine 2, power generator 3, and compressor 4 can be efficiently arranged, making the overall outline compact.

[0035] When performing maintenance on the compressor 4, the second housing 20 is separated from the first housing 10, and the maintenance work is performed in that state. This separation can be performed simply by removing the fastening member 30, disconnecting the air discharge end 4P of the compressor 4 from the air piping coupler 6A, and disconnecting the power supply wiring 9 from the power supply wiring connection portion 7. Furthermore, when performing maintenance work, the separated second housing 20 can be placed in a large work space, improving workability. These features improve the ease of maintenance of the compressor 4.

[0036] In the first housing 10 from which the second housing 20 has been separated, the engine 2 and the power generator 3 can be driven independently of the compressor 4. This allows the engine 2 to be driven to operate the power generator 3 even during maintenance of the compressor 4, allowing welding work that does not require compressed air to continue. Furthermore, if a separate second housing 20 (separate unit) containing a compressor 4 whose maintenance has been completed is prepared in place of the compressor 4 undergoing maintenance and connected to the first housing 10, gouging work can be continued. This prevents the inconvenience of on-site work being stopped for a long period of time due to maintenance of the compressor 4.

[0037] Furthermore, the compressor 4 housed in the separated second housing 20 can be operated independently of the operation of the engine 2 by connecting the power supply wiring 9 to another power source. This makes it easy to check the operation of the compressor 4 alone without operating the engine 2 during maintenance, etc.

[0038] Another advantage is that the compressor 4 is not mechanically driven by the engine 2, but is driven by the power output of the power generator 3 which is driven by the engine 2, allowing for stable operation without being affected by rotation fluctuations or heat of the engine 2. The power source for the compressor 4 is not limited to the electric motor 4, and a hydraulic motor, a small engine, or the like may be separately installed.

[0039] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configurations are not limited to these embodiments, and the present invention also includes design changes within the scope of the present invention. Furthermore, the above-described embodiments can be combined by utilizing each other's technologies as long as there are no particular contradictions or problems in their purposes, configurations, etc. [Explanation of symbols]

[0040] 1: Compressor-equipped engine generator welding machine, 1A: first storage space, 1A1: partition wall, 1B: second storage space, 1C: piping space, 2: Engine, 2A: Main body, 2B: Muffler section, 3: power generating body, 3A: welding output terminal part, 3B: power output terminal part, 4: Compressor, 4A: Main body, 4B: Electric motor, 4C: Power transmission mechanism, 4T: Air tank, 4P: Air discharge end, 6: Air piping, 6A: Air piping coupler, 6B: Air outlet, 7: Power supply wiring connection part, 8, 9: Power supply wiring, 10: First housing, 10A: Main body, 10B: Protrusion, 10C: Connection space, 10D: Base, 10T1, 10T3: Exhaust port, 10T2, 10T4: Intake port, 10P, 10Q, 10R: Openable door, 11: Side wall, 11A: Fuel supply port, 11B: Fuel drain port, 11C: Oil guard drain port, 11D: Adjustment panel, 20: Second housing, 30: Fastening member, 40: Air hose, 41: Welding cable, 42: Gouging torch, 43: Earth cable, 44: Earth grip

Claims

1. A compressor-equipped engine generator welding machine includes an engine, a generator driven by the engine, and a compressor for utilizing compressed air, a first housing that houses the engine and the power generator; a second housing in which the compressor is housed; a coupling space for detachably coupling the second housing to a portion below a protrusion of the first housing that accommodates a muffler portion of the engine is provided outside the first housing; the first housing is provided with an intake and exhaust port for the engine and the power generator, and a lower portion of the protruding portion is provided with an intake and exhaust port for the compressor; The compressor-mounted engine generator welding machine is characterized in that the protruding portion is provided with a partition wall between the protruding portion and the connecting space above the intake and exhaust port for the compressor.

2. When the second housing is connected to the connection space, a part of the compressor is accommodated below the partition wall of the protruding portion.

2. The compressor-equipped engine generator / welder according to claim 1.

3. 2. The compressor-equipped engine generator-welder according to claim 1, wherein the first housing has an air pipe arranged therein for supplying compressed air discharged by the compressor, and an air discharge port for discharging the compressed air is provided on a side wall of the first housing.

4. 4. The compressor-mounted engine generator-welder according to claim 3, wherein a welding output terminal portion of the generator is provided on the side wall where the air discharge port is provided.

5. 2. The compressor-mounted engine generator-welder according to claim 1, wherein the first housing is provided with a power supply wiring connection portion for supplying the generated power output of the power generator to a motor of the compressor.

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