JPH0231548Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a soundproof engine work in which an engine and work equipment such as a generator and a compressor that are operated using the engine as a power source are housed in a soundproof box. It's about machines.

Conventional technology and its problems Engine working machines that integrate an engine and a generator compressor driven by the engine are generally used at construction sites, etc., but when operating in a work environment or in an urban area, especially at night. In order to keep the operating noise as low as possible, out of consideration for the local community, many devices are used that have a soundproof structure in which the entire device is covered with a soundproof box.

In this type of soundproof engine working machine, in order to pursue quietness as mentioned above, openings such as intake ports and exhaust ports are made as small and as small as possible, but on the other hand, the opening area is small. Therefore, sufficient consideration must be given to cooling the inside of the soundproof box. Furthermore, while addressing the above-mentioned problems, there is also a need to increase the packaging density within the soundproof box and reduce the size and weight of the entire aircraft.

On the other hand, in this type of engine work equipment, the same model may be required to have a recoil starter specification or a starter motor specification, and in order to meet each requirement, it is necessary to It is necessary to secure space for each component installation. In particular, due to the specifications of the starting motor, it is necessary to secure a space to install the battery that is the power source for the motor, but in conventional soundproof engine working machines, the battery is As shown in the official gazette, it should be installed at the rear of the engine working machine body or
As shown in Publication No. 39151, it was installed on the side of the engine working machine body and separated from the engine working machine body in consideration of cooling by ventilation. However, if such a conventional battery arrangement is used for a soundproof engine working machine that is compatible with both the recoil starter specification and starting motor specification as described above, it is possible to avoid increasing the size of the entire machine. do not have.

Means and Effects for Solving the Problems The present invention has been made in view of the above problems, focusing on the fact that the recoil starter and the battery are not installed in the soundproof box at the same time. The type engine working machine includes an engine cooling fan provided on the engine, a duct that covers the cylinder and exhaust system of the engine and opens to the outside of the soundproof box, and a fan cover that covers the engine cooling fan and communicates with the duct. has
A recoil starter mounting portion is provided on the upstream side of the intake air of the fan cover, and a battery mounting portion is formed in a portion adjacent to a space occupied by the recoil starter attached to the recoil starter mounting portion in the soundproof box body, The present invention is characterized in that it is configured so that either the starter or the battery can be selected and installed.

According to the present invention, since the recoil starter mounting position and the battery mounting position are formed very close to each other, the space inside the soundproof box body can be effectively utilized, and the entire aircraft body can be downsized. The recoil starter mounting position and the battery mounting position are located on the upstream side of the fan cover, but when installing the recoil starter, the battery part is left as a space, and when installing the battery, the recoil starter part is left as a space. A ventilation path to the fan cover is secured, and in any case, a sufficient amount of cooling air can be supplied to the engine. Moreover, when the battery is attached, a sufficient ventilation cooling space is secured near the battery, and the battery can be effectively cooled.

Embodiments Hereinafter, the present invention will be described with reference to illustrated embodiments. FIG. 1 is a perspective view showing the external appearance of a soundproof engine working machine according to the present invention. The equipment associated with these items is housed. A sound insulating material made of, for example, glass wool is attached to the inner surface of the soundproof box 1 to prevent noise generated by internal equipment from leaking to the outside.

The soundproof box body 1 covers a bottom wall body 2, a main wall body 3 having a U-shaped cross section fixed with screws or the like along the side edges of the bottom wall body 2, and both ends of the main wall body 3. and an end wall body 4. A side wall 5 of the main wall body 3 is provided with an operation panel 6 on which various parts for operating the engine are arranged. The illustrated operation panel 6 is of a recoil starter specification, and is provided with a recoil starter grip 7.

As shown in FIG. 2, the bottom wall 2 has an edge member 8 surrounding it around which the main wall 3 and end wall 4 are attached, and a bottom plate 9 is stretched inside the edge member 8. Additionally, edge members 8 extending along both sides
Reinforcing plates 10, 10 are arranged between a, 8a, and an engine and a generator are attached to these reinforcing plates 10, 10. In the figure, the part surrounded by chain line A is the installation location of the engine, and the part surrounded by chain line B is the installation location of the generator. The part surrounded by chain line C includes the engine exhaust system including a silencer,
A duct is installed to cover this exhaust system and guide air that cools the engine and generator to the rear exhaust port. Note that the front or rear of this engine working machine refers to the engine side, that is, the left side in FIG. 2, and the power generation side, that is, the right side in FIG. 2, as the rear.

A pair of channel members 11 extend back and forth along both sides of the lower surface of the bottom wall body 2, and moving wheels 12 are pivotally supported on the channel members 11. External air is introduced into the channel member 11 through an opening 13 provided at its end or an opening 14 provided in its side wall (see FIG. 3), and the air is introduced into the bottom plate 9. It is sucked into the inside of the soundproof box body 1 through the vent hole 15a. There are further vent holes 15b, 15 at the rear of the bottom plate 9.
c are provided, and these vents 15b, 1
Outside air is also introduced into the soundproof box body 1 from 5c. Part of the air introduced through the vents 15a, 15b, and 15c is sucked into the cylinder of the engine as combustion air, and the rest cools the generator and engine, and then is placed in the chain line portion C. It is exhausted to the rear via the exhaust system and ducts. Reference numeral 16 denotes a battery mount, which will be described later, and is fixed to the front part of the bottom plate 9.

Next, each device disposed inside the soundproof box 1 shown in FIG. 1 and on the bottom wall 2 shown in FIG. 2 will be described. 3 is a side view showing the inside excluding the side wall 5 of FIG. 1, and FIG. 4 is a front view showing the inside excluding the front end wall 4 of FIG. Although this engine working machine is compatible with both the recoil starter specification and the starter/generator specification, FIGS. 3 and 4 show the recoil starter specification.

Reference numeral 17 denotes an engine, which is attached to the reinforcing plate 10 via a rubber mount 18. As shown in FIG. 4, the engine 17 is installed in a low position with the cylinder inclined laterally, and a fuel tank 19 is installed above the engine 17 on a partition wall 20 constructed between both end walls 4. It is placed and fixed.
Further, the engine 17 is covered with a cover 21, and a cooling fan 22 is disposed inside the cover 21 and is fixed to the outer end of the crankshaft. The cover 21 is connected to a shroud 23 that covers the cylinder portion of the engine 17, and the shroud 23 extends rearward and connects to a duct 24 (FIG. 3) disposed in the area indicated by the dashed line C in FIG. It's connected. During operation of the engine 17, air sucked in from the front by the cooling fan 22 flows inside the cover 21 and the shroud 23 along the engine body, cools the engine 17, and then is sent into the duct 24. 24 and is discharged to the outside through a discharge port provided in the rear end wall body 4.
The exhaust pipe and muffler of the engine 17 are also disposed inside the duct 24, and the air cools these exhaust pipes and the muffler, so that the heat generated by the engine 17 is transferred to the inside of the soundproof box 1. Prevent release.

At the rear of the engine 17, a generator 25 directly connected to its output shaft is arranged on the rear reinforcing plate 10 along with the duct 24, and the generator 25 has a built-in cooling fan 26, and its exhaust side is disposed on the rear reinforcing plate 10. The shroud 23 is connected to the shroud 23, and the exhaust air that has cooled the inside of the generator 25 by the action of the cooling fan 26 flows through the shroud 23.
It is designed to be sent into the duct 24 through the.

The fuel in the fuel tank 19 is transferred to a fuel pipe 29a which is opened and closed by a manual cock 27 or a fuel pipe 29a which is opened and closed by an automatic cock 28 consisting of a solenoid valve.
9b, it is supplied to the vaporizer 31 via a common strainer 30.

32 is an air cleaner, and the combustion air passes through this air cleaner 32 and the carburetor 31 to the engine 1.
7 cylinder. This fuel supply system includes each of the vent holes 1 provided at the rear of the bottom wall body 2.
The cooling fan 2 is introduced into the soundproof box body 1 through the cooling fan 2.
The cooling air is drawn into the cover 21, passes around the engine 17 from the rear to the front, and is sucked into the cover 21 from the front.

The recoil starter 33 is attached to the front end surface of a fan cover 34, which is a part of the cover 21, with bolts or the like, and a cable 35 extending from the recoil starter 33 attached in this way connects to the recoil star tag. It is connected to the lip 7. As is well known, the cable 35 is wound around a rotating drum built into the recoil starter 33 and biased by a spring, and by pulling the recoil starter grip 7 and rewinding the cable 35 together with the rotating drum. , the crankshaft of the engine 17 rotates and the engine 177 starts. At this time, the supply of fuel is controlled by operating the fuel pot lever 36 (FIG. 1) on the operation panel 6 to operate the manual pot 27.

In order to change the engine working machine with the recoil starter specification to the engine working machine with the starting motor specification as described above, the recoil starter 33 is removed from the fan cover 34, and the battery mounting base is removed as shown in FIGS. 5 and 6. A battery 37 is placed and fixed on top of the battery 16. Note that this battery 37 is also shown by a chain line in FIG. 3, and as can be seen from these figures, the space occupied by the recoil starter 33 and the space occupied by the battery 37 are extremely close to each other. Furthermore, both spaces may partially overlap. A starter motor 38 is attached to the side of the engine 17, and the starter motor 38 drives a flywheel (not shown). In addition, the operation panel 6 is replaced with an operation panel 3 for starting motor specifications.
9, and perform the required wiring between the switch provided on the operation panel 39, the battery 37, and the starting motor 38, so that by operating the switch, the starting motor 38 is started and stopped using the battery 37 as a power source. do. Further, wiring is provided between the battery 37 and the solenoid of the automatic cock 28 via a suitable control member, and when the starting motor is specified, the automatic cock 28 controls the supply of fuel from the fuel tank 19 to the engine 17. .

In this way, this embodiment can correspond to both the recoil starter specification and the starting motor specification, but in the case of the recoil starter specification, since the battery 37 is removed, the area around the recoil starter 33 is In addition to providing sufficient space for intake of cooling air, in the case of a starting motor specification, since the recoil starter 33 is removed, the recoil starter 33 is removed between the battery 37 and the front end of the fan cover 34. A space S corresponding to the mounting space of the engine 33 is formed, and a sufficient amount of cooling air can be guided to the engine 17 through this space S, and the battery 37 is well cooled by the cooling air flowing through the space S. Therefore, since the mounting position of the recoil starter 33 and the mounting position of the battery 37 can be placed very close to each other, as mentioned above, the engine working machine main body can be placed in consideration of ventilation at the rear or side of the engine working machine main body. Compared to conventional engine working machines in which the battery is placed separately from the battery, the bottom area can be significantly reduced, and the entire machine body can be made smaller.

Effects of the Invention As described above, in the present invention, in a soundproof engine working machine in which an engine and a working machine driven by the engine are housed in a soundproof box, the engine cooling fan installed in the engine, the engine cylinder and A duct that covers the exhaust system and opens to the outside of the soundproof box body, and a fan cover that covers the engine cooling fan and communicates with the duct, and a recoil starter mounting part is provided on the upstream side of the fan cover for intake of air. A battery installation portion is formed in a portion adjacent to a space occupied by the recoil starter attached to the recoil starter attachment portion in the soundproof box body, and either the recoil starter or the battery is configured to be selectively attached. Therefore, one model can support both recoil starter specifications and starting motor specifications, and the space inside the soundproof box is effectively used to ensure a sufficient ventilation path on the upstream side of the fan cover's intake for both specifications. At the same time, the entire aircraft can be made smaller. Furthermore, when the starter motor is used, sufficient ventilation cooling space is secured near the battery, and the battery can be effectively cooled.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a soundproof engine working machine according to an embodiment of the present invention, Fig. 2 is a perspective view of the bottom wall, and Fig. 3 is a partially cutaway view of the same engine working machine with a recoil starter specification. 4 is a front view of the same, FIG. 5 is a partial side view showing the same engine working machine with starter motor specifications, and FIG. 6 is a front view of the same. DESCRIPTION OF SYMBOLS 1... Soundproof box body, 2... Bottom wall body, 3... Main wall body, 4... End wall body, 5... Side wall, 6... Operation panel, 7... Recoil starter grip, 8... ...Edge member, 9...Bottom plate, 10...Reinforcement plate, 11...Channel member, 12...Wheel, 13, 14...Opening, 15...Vent hole, 16...Battery mounting base,
17...Engine, 18...Rubber mount, 1
9... Fuel tank, 20... Bulkhead, 21... Cover, 22... Cooling fan, 23... Shroud,
24... Duct, 25... Generator, 26... Cooling fan, 27... Manual pot, 28... Automatic pot, 29... Fuel pipe, 30... Strainer, 31
...Carburetor, 32...Air cleaner, 33...Recoil starter, 34...Fan cover, 35...
...Main, 36...Fuel lever, 37...Battery, 38...Starting motor, 39...Operation panel.

Claims (1)

[Scope of utility model registration request] In a soundproof engine working machine in which an engine and a working machine driven by the engine are housed in a soundproof box, an engine cooling fan provided in the engine, a cylinder of the engine, and an exhaust system are covered and opened to the outside of the soundproof box. duct, and a fan cover that covers the engine cooling fan and communicates with the duct, a recoil starter mounting portion is provided on the air intake upstream side of the fan cover, and a recoil starter mounting portion is provided in the soundproof box body. A soundproof engine working machine, characterized in that a battery installation part is formed in a part adjacent to a space occupied by an attached recoil starter, and is configured so that either the recoil starter or the battery can be selected and installed.