JP2015214958A - Engine-driven working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine-driven working machine allowing fuel leaked in an inner side of a soundproof case to flow into a water receiving container separately from rainwater intruding into the inner side of the soundproof case.SOLUTION: An engine-driven working machine includes a fuel tank 31, a water receiving container 30 for storing leaked fuel, and a base having a side plate 3a arranged on both sides of the water receiving container 30. An upper part of the water receiving container 30 is opened, a fuel tank fixing plate 35 is fixed to the side plate 3a so as to cross the upper part of the water receiving container 30, and a fuel receiving container 31a for receiving the fuel leaked from the fuel tank 31 is fixed on the fuel tank fixing plate 35. The fuel tank 31 is stored and fixed in the fuel receiving container 31a, and a first oil discharge hole 31a3 and a second oil discharge hole 35a communicated with each other and opened to the upper part of the water receiving container 30 are formed on a bottom surface 31a1 of the fuel receiving container 31a and the fuel tank fixing plate 35.

Description

  The present invention relates to an engine-driven work machine.

  For example, Patent Document 1 describes an engine work machine (engine drive work machine) that includes an oil guard that prevents leakage of fuel and the like from flowing out to the outside of a casing (soundproof case). The fuel leaking from the fuel tank is stored in the first oil guard and the second oil guard, and is prevented from flowing out of the casing.

JP 2012-144988 A

In the engine working machine of Patent Document 1, the capacity (shape) of the first oil guard is determined based on the capacity of the fuel tank. In the engine working machine, when the liquid level of the fuel stored in the first oil guard exceeds a predetermined height, the fuel flows down from the first oil guard to the second oil guard. Then, when the liquid level of the fuel stored in the second oil guard reaches a predetermined height, the engine working machine stops.
In the engine working machine configured as described above, when rainwater enters the inside of the casing from the mating surfaces of each part and the rainwater flows into the first oil guard and the second oil guard, the fuel stored in the first oil guard Less capacity. In other words, the amount of fuel leaking from the fuel tank that can be stored in the first oil guard is less than the planned storable capacity. Therefore, the first oil guard is filled in a state where the amount of fuel leakage from the fuel tank is smaller than the planned amount of leakage, and there is a problem that the continuous operation time of the engine working machine is shortened.

  Therefore, an object of the present invention is to provide an engine-driven work machine capable of separating fuel leaking inside the soundproof case from rainwater entering the soundproof case and flowing into the water receiving container.

  In order to solve the above problems, the present invention provides a working machine, an engine that drives the working machine, a fuel tank that stores fuel supplied to the engine, and a fuel that leaks from the engine and the fuel tank. An engine-driven working machine includes a water receiving container, a base having two side plates disposed on both sides of the water receiving container, and a soundproof case that covers the working machine and the engine. The working machine, the engine, the fuel tank, and the soundproof case are fixed to the side plate, the upper part of the water receiving container is opened, and a fuel tank fixing plate is disposed so as to cross the upper side of the water receiving container. A fuel receiving container for receiving fuel leaking from the fuel tank is fixed to the fuel tank fixing plate; the fuel tank is received and fixed in the fuel receiving container; An oil drain hole is formed in the bottom surface of the container and the fuel tank fixing plate so as to communicate with each other and open above the water receiving container.

  According to the present invention, the fuel tank is accommodated in the fuel receiving container for receiving the fuel and attached to the fuel tank fixing plate. The fuel tank fixing plate is disposed above the water receiving container, and an oil drain hole that opens in communication with the fuel receiving container and the fuel tank fixing plate and opens above the water receiving container is opened. Therefore, the fuel leaking from the fuel tank is received in the fuel receiving container and flows into the water receiving container without being diffused. Therefore, it is possible to prevent the surroundings of the engine-driven working machine from being contaminated with the leaked fuel.

  The fuel tank is disposed inside the soundproof case, the fuel tank has a fuel filler port extending toward the soundproof case, and the soundproof case projects below the fuel filler port. A fuel guide plate having a guide portion is attached, and the guide portion has a shape that allows fuel leaking from the fuel filler opening to fall inside the fuel receiving container.

  According to the present invention, the guide portion of the fuel guide plate is disposed below the fuel filler port extending toward the soundproof case. Therefore, the fuel leaking from the fuel filler port falls to the guide part. And the fuel which fell to the guide part from the fuel filler opening falls to the inside of a fuel receiving container. The fuel that falls inside the fuel receiving container flows into the water receiving container without being diffused. Therefore, the surroundings of the engine-driven work machine are prevented from being contaminated with fuel leaking from the fuel filler opening.

  In the present invention, an upper drain hole that penetrates into the inside of the soundproof case and drops rainwater that has fallen on the fuel tank fixing plate is formed through the fuel tank fixing plate, and the side plate includes the upper drain hole. A water collecting plate for receiving the rainwater falling through the drainage hole is attached, and the water collecting plate is bent from the side plate side toward the water receiving container side, and the water collecting portion includes It has a lower drainage hole for dropping the received rainwater between the side plate and the water receiving container.

  According to the present invention, rainwater that has entered the inside of the soundproof case falls from the fuel tank fixing plate through the upper drainage hole and is received by the water collecting plate. The drainage plate has a lower drainage hole for allowing rainwater to fall between the side plate and the water receiving container. Therefore, the rainwater received by the water collecting plate falls between the water receiving container and the side plate without flowing into the water receiving container. Therefore, the fuel leaking inside the soundproof case can be separated from the rainwater entering the inside of the soundproof case and flow into the water receiving container, and the storable capacity of the fuel in the water receiving container is the rainwater entering the inside of the soundproof case. Decrease is suppressed.

  In the present invention, a partition plate facing the side plate is erected on the fuel tank fixing plate between the fixed fuel receiving container and the upper drain hole.

  According to the present invention, even if the fuel leaked from the fuel tank and discharged from the oil drain hole of the fuel receiving container spreads on the fuel tank fixing plate, the flow is blocked by the partition plate. For this reason, the fuel does not reach the upper drain hole. Therefore, the fuel does not fall between the water receiving container and the side plate through the lower drainage hole of the water collecting plate, and the surroundings of the engine-driven working machine are prevented from being contaminated with the fuel.

  In the present invention, the fuel tank fixing plate is attached below the upper end surface of the side plate to which the soundproof case is attached, and the height of the partition plate from the fuel tank fixing plate is the fuel tank fixing plate. It is more than the height to the said upper end surface, It is characterized by being lower than the height of the wall surface of the said fuel receiving container.

  According to the present invention, even if the fuel leaked from the fuel tank and discharged from the oil drain hole of the fuel receiving container spreads on the fuel tank fixing plate, the flow is blocked by the partition plate. It does not reach the hole. In addition, since the height of the partition plate from the fuel tank fixing plate is higher than the upper end surface of the side plate and lower than the height of the wall surface of the fuel receiving container, rainwater entering the soundproof case from the upper end surface exceeds the partition plate. Do not enter the fuel receiving container. For this reason, fuel and rain water can be reliably separated.

  ADVANTAGE OF THE INVENTION According to this invention, the engine drive work machine which can isolate | separate the fuel which leaks inside a soundproof case from the rain water which permeates the inside of a soundproof case, and can flow in into a water receiving container can be provided.

It is an external view of an engine drive working machine. It is a figure showing a muffler room, a radiator room, and an engine room formed inside a soundproof case. It is a disassembled perspective view of a base. It is a perspective view of a fuel receiving container. It is a perspective view of the base with which the fuel tank and the water receiving container were attached. It is a perspective view which shows the attachment structure of a fuel receiving container. (A) is a perspective view which shows the water collecting plate attached to a base, (b) is a perspective view which shows the lower drain hole formed in a water collecting plate. It is sectional drawing in Sec1-Sec1 in (b) of FIG. It is sectional drawing in Sec2-Sec2 in (b) of FIG. It is sectional drawing which shows the fuel guide plate with which a soundproof case is equipped.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is an external view of an engine-driven work machine.
As shown in FIG. 1, the engine-driven work machine 1 according to the present embodiment includes a base 3 and a soundproof case 2 attached on the base 3 to form a casing.
The soundproof case 2 forms a front panel 2F forming a front (Fr) side surface (front surface), an upper panel 2U forming an upper (Up) side surface (ceiling surface), and both side surfaces viewed from the front surface. It includes two side panels 2S and a rear panel 2R that forms a rear (Re) side surface (rear surface), and a sub panel 2Fa is attached to the front panel 2F. The base 3 is disposed below the soundproof case 2 (Dn). The base 3 includes a water receiving container 30.

The sub-panel 2Fa attached to the front panel 2F has an intake port (front intake port 20) for taking air into the soundproof case 2, and the upper panel 2U has an exhaust port for exhausting air from the soundproof case 2 ( The front exhaust port 21a and the central exhaust port 21b) are open.
Further, a rear intake port 22 for taking air into the soundproof case 2 is opened behind the side panel 2S.

  Furthermore, a side door 200 for maintenance is provided on the side panel 2S so that it can be opened and closed. The side door 200 includes a first opening / closing part 200a and a second opening / closing part 200b. In the present embodiment, the first opening / closing part 200a is disposed on the front side of the second opening / closing part 200b. The first opening / closing part 200a and the second opening / closing part 200b are two-sided. The first opening / closing part 200 a opens and closes the soundproof case 2 from the position of the base 3. The second opening / closing part 200 b opens and closes the soundproof case 2 at a position (upward position) higher than the position of the base 3.

FIG. 2 is a diagram showing a muffler chamber, a radiator chamber, and an engine chamber formed inside the soundproof case.
As shown in FIG. 2, a muffler chamber 40, an engine chamber 50, and a radiator chamber 60 are formed inside the soundproof case 2.
The muffler chamber 40 is formed in front of the soundproof case 2 (front panel 2F side) surrounded by a front panel 2F, an upper panel 2U, two side panels 2S, and a partition wall (front partition wall 2a). ing.

  The front partition 2a is a partition that divides the soundproof case 2 over its entire width and height, whereby the inside of the soundproof case 2 is divided into the front and rear, and the muffler chamber 40 is formed in the front. In addition, the full width here shows the whole area of the width direction orthogonal to the direction which goes from the front (Fr) to back (Re) and the direction which goes from the upper direction (Up) to the lower direction (Dn). The total height indicates the entire area in the height direction from the upper side (Up) to the lower side (Dn).

  The engine room 50 is formed behind the soundproof case 2 (on the rear panel 2R side) and surrounded by the rear panel 2R, the upper panel 2U, the two side panels 2S, and the front partition wall 2a. That is, the muffler chamber 40 and the engine chamber 50 are partitioned by the front partition 2a.

Further, a partition wall (upper partition wall 2b) for partitioning the upper part is attached to the engine compartment 50 side of the front partition wall 2a. The upper partition 2b includes an inclined surface 2b1 that is inclined rearward (rear panel 2R side) and upward (upper panel 2U side) from the front partition 2a, and side surfaces 2b2 formed upward on both sides thereof. And the upper ends of the inclined surface 2b1 and the side surface 2b2 are in contact with the upper panel 2U. Further, the front end portions of the inclined surface 2b1 and the side surface 2b2 are in contact with the front partition wall 2a, and the region surrounded by the upper partition wall 2b, the front partition wall 2a, and the upper panel 2U is partitioned from the engine compartment 50. A region partitioned from the engine chamber 50 by the upper partition wall 2 b is a radiator chamber 60. That is, the radiator chamber 60 is partitioned from the engine chamber 50 by the upper partition wall 2b and from the muffler chamber 40 by the front partition wall 2a.
The front exhaust port 21a of the upper panel 2U opens at the position of the muffler chamber 40, and the central exhaust port 21b opens at the position of the radiator chamber 60. Further, the rear intake port 22 of the side panel 2 </ b> S opens at the position of the engine compartment 50.

  On the side surface 2b2 of the upper partition wall 2b, a work port 2b3 for maintenance is opened at a position facing the outside of the soundproof case 2 when the first opening / closing portion 200a of the side door 200 is opened. Thus, the radiator chamber 60 can be maintained. The work port 2b3 is preferably airtightly closed by the lid member 2b4. The lid member 2b4 is preferably detachably fastened and fixed to the side surface 2b2 with a screw member (not shown), for example, and can be removed as necessary.

  The engine chamber 50 accommodates an engine 51 provided with an engine fan 51a and a work machine 52 (a generator, a compressor, a pump, etc.) driven by the engine 51. The engine 51 and the work machine 52 are covered with a soundproof case 2. The engine 51 and the work implement 52 are disposed so as to be exposed to the outside of the soundproof case 2 when the first opening / closing part 200a and the second opening / closing part 200b of the side door 200 are opened.

The muffler chamber 40 is provided with a muffler 41 that lowers the temperature of exhaust gas exhausted from the engine 51 and lowers the pressure. The muffler 41 is disposed in front of the engine fan 51a. In the front partition wall 2a, a ventilation hole 2a2 is opened between the engine fan 51a and the muffler 41. Further, the engine chamber 50 is provided with an exhaust duct 51b that guides the air blown by the engine fan 51a to the ventilation hole 2a2 of the front partition 2a. By providing such an exhaust duct 51b, all the air blown by the engine fan 51a can be blown to the ventilation holes 2a2. In addition, the muffler 41 is attached to the muffler attaching part 46 formed in the front partition 2a.
As shown in FIG. 2, the lower end of the front partition 2a is bent toward the front panel 2F to form an extension 2a3, and a muffler 41 is disposed on the upper surface of the extension 2a3.

  In the engine-driven work machine 1 of the present embodiment, the fuel tank 31 is disposed below the extension part 2a3 of the front partition wall 2a. The fuel tank 31 is disposed inside the soundproof case 2 and stores fuel supplied to the engine 51.

  An electric fan 42 is disposed in the muffler chamber 40. The electric fan 42 is attached to the front partition wall 2a, and is configured to suck air through the front air inlet 20 (see FIG. 1) opened in the front panel 2F when driven. The electric fan 42 blows air sucked into a radiator 61 that is disposed in the radiator chamber 60 and attached to the front partition 2a.

FIG. 3 is an exploded perspective view of the base. FIG. 4 is a perspective view of the fuel receiving container. FIG. 5 is a perspective view of a base to which a fuel tank and a water receiving container are attached.
As shown in FIG. 3, the base 3 has a water receiving container 30 and a side plate 3a. The water receiving container 30 is a container whose upper side (Up) is open, and has a liquid-tight structure capable of storing liquid (fuel, lubricant, etc.). The side plate 3a is fixed to the side of the water receiving container 30 extending in the front-rear direction. In the side plate 3a, upper and lower end sides and front and rear end sides are bent outward. Such side plates 3 a are attached to both sides of the water receiving container 30.
The soundproof case 2 (see FIG. 1) is attached to a plane (upper end surface 3aU) in which the upper edge of the side plate 3a is bent outward.

  Bolt holes (first bolt holes HL1) through which bolts (first bolts BL1) are inserted are appropriately opened in the side plate 3a. Further, in the water receiving container 30, a second bolt hole HL2 is opened at a position corresponding to the first bolt hole HL1. Then, the first nut NT1 is tightened from the inside of the water receiving container 30 to the first bolt BL1 inserted through the first bolt hole HL1 of the side plate 3a and the second bolt hole HL2 of the water receiving container 30, and the side plate 3a receives water. Attached to the container 30. Details of the structure in which the side plate 3a is attached to the water receiving container 30 will be described later.

A fuel tank 31 is attached to the front (Fr) of the base 3 from above. The fuel tank 31 is accommodated in the fuel receiving container 31a and attached to the side plate 3a. The fuel receiving container 31a receives fuel leaking from the fuel tank 31, and prevents the fuel from diffusing around. A fuel drain pipe 310 and a fuel supply port (fuel supply port 311) are attached to the fuel tank 31. The fuel supply port 311 opens at the tip of the fuel supply pipe 311a. The fuel stored in the fuel tank 31 is taken out from a fuel supply pipe (not shown) by a fuel hose (not shown) and supplied to the engine 51 (see FIG. 2). A drain hose (not shown) is connected to the fuel drain pipe 310. For example, the drain hose extends toward the side plate 3a. And the fuel of the fuel tank 31 can be extracted from the side plate 3a side by loosening a drain bolt (not shown) provided in the drain hose.
The fuel supply pipe 311 a of the fuel supply port 311 extends in the width direction with respect to the fuel tank 31. That is, the fuel filler port 311 extends toward the soundproof case 2 (see FIG. 1) and protrudes in the width direction with respect to the fuel tank 31.

  When engine 51 (see FIG. 2) is a diesel engine, a fuel return pipe (not shown) for returning unburned fuel to fuel tank 31 is provided.

  As shown in FIG. 4, the fuel receiving container 31 a has a box shape (container shape) in which a wall surface 31 a 2 is erected on an end side (four sides) of a planar bottom surface 31 a 1 facing upward. An oil drain hole (first oil drain hole 31a3) is opened in the bottom surface 31a1. The fuel tank 31 shown in FIG. 3 is mounted on the bottom surface 31a1 of the fuel receiving container 31a and fixed in a state surrounded by the wall surface 31a2.

A tank band bracket 31a4 is attached to the front (Fr) wall surface 31a2. The tank band bracket 31a4 is formed by extending a planar bracket forward. One end of a tank band 31b for fixing the fuel tank 31 is locked to the tank band bracket 31a4 by screwing or the like.
A band fixing hole 31a6 is formed in the rear (Re) wall surface 31a2. The other end of the tank band 31b is locked to the band fixing hole 31a6 by screwing or the like. The band fixing hole 31a6 is configured by fixing a nut member NT3 to a through hole formed in the wall surface 31a2.

  Further, a fuel drain pipe outlet 31a7 is opened in the rear wall surface 31a2. The fuel drain pipe 310 (see FIG. 3) of the fuel tank 31 is inserted through the fuel drain pipe outlet 31a7 and protrudes from the fuel receiving container 31a.

  A mounting hole 31a5 is formed in a wall surface 31a2 (a wall surface 31a2 heading from the front to the rear) formed on the side of the fuel receiving container 31a. The mounting hole 31a5 is configured by fixing the nut member NT2 to a through hole formed in the wall surface 31a2. The fuel receiving container 31a is attached to the side plate 3a (see FIG. 3) with a second bolt BL2 (see FIG. 3) that is tightened into the attachment hole 31a5.

  As shown in FIG. 3, a bolt hole (third bolt hole HL3) is opened at a position corresponding to the mounting hole 31a5 (see FIG. 4) of the fuel receiving container 31a in the side plate 3a. The second bolt BL2 is inserted into the mounting hole 31a5 of the fuel receiving container 31a through the third bolt hole HL3 from the side plate 3a side.

As shown in FIG. 3, the base 3 is provided with an engine attachment portion 32a for fixing the engine 51 (see FIG. 2) and a work implement attachment portion 32b for fixing the work implement 52 (see FIG. 2). .
The engine mounting portion 32a is fixed to a first base 32a1 that is horizontally mounted on the two side plates 3a. The work implement attachment portion 32b is fixed to a second base 32b1 that is horizontally mounted on the two side plates 3a.

  There is a space between the first base 32a1 and the second base 32b1. For this reason, leakage (fuel, lubricating oil, etc.) from the engine 51 (see FIG. 2) attached to the engine attachment portion 32a falls between the first base 32a1 and the second base 32b1. Moreover, the leakage from the work machine 52 (see FIG. 2) attached to the work machine attachment part 32b falls between the first base 32a1 and the second base 32b1. Note that the shapes and attachment positions of the engine attachment portion 32a and the work implement attachment portion 32b can be appropriately changed according to the shapes and sizes of the engine 51 and the work implement 52 mounted on the base 3.

In the base 3 of the present embodiment, the work implement attachment portion 32b is disposed behind (Re) the engine attachment portion 32a. A drainage plate 33 is provided behind the work implement mounting portion 32b. The drainage plate 33 is a plate member having a flat surface facing upward, and is inclined so as to go downward as it goes rearward. The drain plate 33 is liquid-tightly fixed to the two side plates 3a. For example, the drain plate 33 is welded to the two side plates 3a.
And the water receiving container 30 is arrange | positioned under the fuel receiving container 31a, the engine attachment part 32a, the working machine attachment part 32b, and the drain plate 33. FIG. For this reason, the leakage from the engine 51 (see FIG. 2) and the work machine 52 (see FIG. 2) falls between the first base 32a1 and the second base 32b1 and flows into the water receiving container 30.

  Further, the drain plate 33 is disposed so as to cover the upper side (opening) of the water receiving container 30. The drain plate 33 is configured such that rainwater that has entered the soundproof case 2 (see FIG. 1) falls. And the rain water which fell to the drain plate 33 is drained from the base 3 without flowing into the water receiving container 30.

As shown in FIG. 5, the fuel tank 31 is accommodated in a fuel receiving container 31a and fixed by a tank band 31b. In the present embodiment, the fuel receiving container 31 a is attached to the fuel tank fixing plate 35.
The fuel drain pipe 310 of the fuel tank 31 is inserted through the fuel drain pipe outlet 31a7 of the fuel receiving container 31a and the fuel drain pipe outlet 35c1 of the fuel tank fixing plate 35 and protrudes rearward of the fuel tank fixing plate 35.

When a drain hose (not shown) connected to the fuel drain pipe 310 is disconnected, the fuel in the fuel tank 31 leaks from the fuel drain pipe 310. The fuel that has passed through the fuel drain pipe 310 falls behind the fuel tank fixing plate 35. A water receiving container 30 is disposed at this position. Therefore, the fuel leaking from the fuel tank 31 through the fuel drain pipe 310 flows into the water receiving container 30.
Further, the fuel leaking from the fuel tank 31 flows into the fuel receiving container 31a. Part of the fuel that has flowed into the fuel receiving container 31a flows into the water receiving container 30 through the fuel drain pipe outlet 31a7 of the fuel receiving container 31a and the fuel drain pipe outlet 35c1 of the fuel tank fixing plate 35.

On the side plate 3a of the side door 200 on the side provided with the first opening / closing portion 200a (see FIG. 1), a door locking portion 3c is formed on the upper end surface 3aU. The door locking portion 3c is formed to have a length equal to the length in the front-rear direction of the first opening / closing portion 200a. The door locking part 3c has a flat surface part 3c1, a wall-like part 3c2, and a folded part 3c3. The plane portion 3c1 is in surface contact with the upper end surface 3aU of the side plate 3a. The wall-like portion 3c2 is formed with the flat portion 3c1 standing up. The folded portion 3c3 is formed by bending the upper end of the wall-shaped portion 3c2 outward. In addition, the end of the flat surface portion 3c1 is bent downward on the outside of the side plate 3a to form a hanging portion 3c4.
A first opening / closing portion 200a shown in FIG. 1 is engaged with the door locking portion 3c, and the intrusion of rainwater into the soundproof case 2 (see FIG. 1) is suppressed. Details of the structure of the door locking portion 3c will be described later.

  Further, as shown in FIG. 5, a plurality of bolt holes (fourth bolt holes HL4) are opened in the upper end surface 3aU of the side plate 3a. The third bolt BL3 is inserted into the fourth bolt hole HL4 from below. The third bolt BL3 is a bolt that fastens and fixes the soundproof case 2 (see FIG. 1) to the upper end surface 3aU of the side plate 3a.

FIG. 6 is a perspective view showing an attachment structure of the fuel receiving container.
As shown in FIG. 6, a fuel tank fixing plate 35 is provided at a position of the base 3 where the fuel receiving container 31 a is provided. The fuel tank fixing plate 35 is a plate-like member having a flat surface facing upward. The fuel tank fixing plate 35 is provided so as to cross over the water receiving container 30. The rear end of the fuel tank fixing plate 35 rises in a wall shape toward the upper side to form a rear wall portion 35c. In the rear wall 35c, a fuel drain pipe outlet 35c1 is opened at a position corresponding to the fuel drain pipe outlet 31a7 of the fuel receiving container 31a. When the fuel receiving container 31a is fixed to the fuel tank fixing plate 35, the fuel drain pipe outlet 35c1 of the fuel tank fixing plate 35 and the fuel drain pipe outlet 31a7 of the fuel receiving container 31a communicate with each other. The fuel drain pipe outlet 35c1 is formed from the rear wall 35c to a plane facing upward.

The fuel tank fixing plate 35 is fixed to the two side plates 3a by welding or the like. The fuel tank fixing plate 35 is attached below the upper end surface 3aU. In the fuel tank fixing plate 35, an oil drain hole (second oil drain hole 35a) is opened at a position corresponding to the first oil drain hole 31a3 of the fuel receiving container 31a. The first oil drain hole 31 a 3 and the second oil drain hole 35 a communicate with each other and open above the water receiving container 30. The upper part of the water receiving container 30 is opened. Therefore, the first oil drain hole 31a3 and the second oil drain hole 35a are formed so as to face the opened water receiving container 30.
The second oil drain hole 35a has an opening area larger than that of the first oil drain hole 31a3 of the fuel receiving container 31a. That is, the length in the front-rear direction and the width direction of the second oil drain hole 35a is longer than the length in the front-rear direction and width direction of the first oil drain hole 31a3.

Above the fuel tank fixing plate 35, a partition plate (rainwater partition plate 36) is erected in parallel with the side plate 3a. The fuel tank fixing plate 35 is provided with two rainwater partition plates 36 so as to face the two side plates 3a. The rainwater partition plate 36 is fixed to the fuel tank fixing plate 35 by welding or the like. The rainwater partition plate 36 is liquid-tightly fixed to the fuel tank fixing plate 35.
The fuel receiving container 31 a is disposed between the two rainwater partition plates 36. In other words, the rainwater partition plate 36 stands on the fuel tank fixing plate 35 so as to face the side plate 3a outside the fuel receiving container 31a. A gap (drainage groove 36a) is formed between the rainwater partition plate 36 and the side plate 3a. That is, the rainwater partition plate 36 and the drainage groove 36a are interposed between the side plate 3a and the fuel receiving container 31a.

  A drainage hole (upper drainage hole 35 b) is formed in the fuel tank fixing plate 35 in a drainage groove 36 a formed between the side plate 3 a and the rainwater partition plate 36. The upper drain hole 35b is formed by cutting out the end of the fuel tank fixing plate 35 on the side plate 3a side. That is, the upper drain hole 35b is formed on the side plate 3a side. In FIG. 6, one upper drain hole 35b is shown in one drain groove 36a, but the number of upper drain holes 35b is not limited.

In the rainwater partition plate 36, a spacer member 36b is fixed at a position corresponding to the mounting hole 31a5 of the fuel receiving container 31a. The spacer member 36b is interposed between the rainwater partition plate 36 and the fuel receiving container 31a (wall surface 31a2). A through hole 36h passes through the spacer member 36b. The spacer member 36b may be fixed to the fuel receiving container 31a.
A spacer member 3b is disposed between the side plate 3a and the rainwater partition plate 36 at a position where the third bolt hole HL3 is formed in the side plate 3a. The spacer member 3b is fixed to the side plate 3a by welding or the like. The spacer member 3b has a through hole (not shown) through which the second bolt BL2 is inserted.

The second bolt BL2 inserted through the third bolt hole HL3 of the side plate 3a passes through the through hole of the spacer member 3b and the through hole 36h of the spacer member 36b and is tightened into the mounting hole 31a5 of the fuel receiving container 31a.
By disposing the spacer member 3b between the side plate 3a and the rainwater partition plate 36, deformation of the rainwater partition plate 36 and the fuel receiving container 31a when the second bolt BL2 is tightened in the mounting hole 31a5 is suppressed. Is done.

  As shown in FIG. 6, the water receiving container 30 is provided with a drain pipe 300 on the front side. The drain pipe 300 is opened and closed by a drain cock (not shown). When the drain pipe 300 is opened by the drain cock, the liquid (leakage or the like) stored in the water receiving container 30 is discharged. A drain bracket 300 a is disposed around the drain pipe 300. The drain bracket 300 a is erected forward so as to surround the drain pipe 300. Leakage leaking from the drain pipe 300 is received by the drain bracket 300a.

(A) of FIG. 7 is a perspective view which shows the water collecting plate attached to a base, (b) is a perspective view which shows the lower drainage hole formed in a water collecting plate.
As shown in FIG. 7 (a), a predetermined gap (rain water dropping groove 30a) is formed between the water receiving container 30 and the side plate 3a. A water collecting plate 37 is attached to the side plate 3a in the rainwater dropping groove 30a. The water collecting plate 37 extends along the water receiving container 30. The water collecting plate 37 preferably has a length equal to or longer than the length of the water receiving container 30 (the length from the front to the rear). The water collecting plate 37 has a base portion 37a and a water collecting portion 37b.
The base 37a is formed in a planar shape and makes surface contact with the side plate 3a. The base 37a is fixed to the side plate 3a by welding or the like. The water collection part 37b is formed by bending the upper end of the base part 37a fixed to the side plate 3a to the water receiving container 30 side. The water collecting portion 37b is inclined upward from the base portion 37a side toward the water receiving container 30 side.

As shown in FIG. 7B, the water collecting plate 37 has a plurality of drain holes (lower drain holes 37 c). The lower drainage hole 37c is formed so as to penetrate the base 37a and the water collecting portion 37b at a portion where the water collecting portion 37b is bent with respect to the base 37a. The lower drain holes 37c are opened side by side at a predetermined interval.
In addition, the code | symbol 3d of FIG.7 (b) is a trim seal contact | abutted to the 1st opening / closing part 200a (refer FIG. 1). Details of the trim seal 3d will be described later.
As shown in FIG. 7B, the water collecting portion 37b is inclined toward the side plate 3a. Accordingly, the lower drainage hole 37c is formed below the water collecting portion 37b.
FIG. 7B shows the lower drain hole 37c having the same shape and opened at equal intervals. However, the arrangement and shape of the lower drain hole 37c are not limited. The water collecting plate 37 in which the lower drain holes 37c having different shapes are arranged at different intervals may be used.

FIG. 8 is a sectional view taken along Sec1-Sec1 in FIG.
As shown in FIG. 8, the water collecting portion 37 b of the water collecting plate 37 is bent so that the upper side opens toward the water receiving container 30. The water collecting portion 37b is disposed below a drainage groove 36a formed between the side plate 3a and the rainwater partition plate 36. That is, the water collecting portion 37b of the water collecting plate 37 is bent to the inside (the side where the fuel receiving container 31a is disposed) from the rainwater partition plate 36.
The first bolt hole HL1 shown in FIG. 3 is formed in a portion where the side plate 3a and the base portion 37a overlap. Further, as shown in FIG. 8, a spacer 30 b is disposed between the base portion 37 a and the water receiving container 30. The first bolt BL1 is inserted through the first bolt hole HL1 (see FIG. 3) penetrating the side plate 3a, the base 37a, and the spacer 30b, and the second bolt hole HL2 (see FIG. 3) penetrating the water receiving container 30. Then, the first nut NT1 is fastened to the first bolt BL1 from the inside of the water receiving container 30. Thus, the side plate 3a and the water receiving container 30 are fastened and fixed by the first bolt BL1.

The height of the rainwater partition plate 36 shown in FIG. 8 (the height of the rainwater partition plate 36 from the fuel tank fixing plate 35) is the same height as the height from the fuel tank fixing plate 35 to the upper end surface 3aU. Yes. Without being limited to this configuration, the rainwater partition plate 36 may have a height higher than the height from the fuel tank fixing plate 35 to the upper end surface 3aU. That is, the height of the rainwater partition plate 36 from the fuel tank fixing plate 35 may be equal to or higher than the height from the fuel tank fixing plate 35 to the upper end surface 3aU.
Further, the height of the rainwater partition plate 36 from the fuel tank fixing plate 35 is lower than the height of the wall surface 31a2 of the fuel receiving container 31a.

As shown in FIG. 8, the fuel tank 31 is fixed inside a wall surface 31a2 formed in the fuel receiving container 31a. That is, the fuel tank 31 is accommodated in the fuel receiving container 31a. In addition, a first oil drain hole 31a3 is opened in the bottom surface 31a1 of the fuel receiving container 31a. Therefore, the fuel leaking from the fuel tank 31 is discharged from the first oil drain hole 31a3 without leaking outside the wall surface 31a2. Therefore, the diffusion of fuel leaking from the fuel tank 31 is suppressed by the fuel receiving container 31a.
Further, the fuel receiving container 31 a is fixed above the fuel tank fixing plate 35. In the fuel tank fixing plate 35, a second oil drain hole 35a is opened at a position relative to the first oil drain hole 31a3 of the fuel receiving container 31a. That is, the first oil drain hole 31a3 and the second oil drain hole 35a communicate with each other. The second oil drain hole 35 a is opened only above the water receiving container 30. Therefore, the fuel discharged from the fuel receiving container 31a through the first oil drain hole 31a3 flows into the water receiving container 30 from above (opened side) through the second oil drain hole 35a.

  As described above, part of the fuel leaking from the fuel tank 31 passes through the fuel drain pipe outlet 31a7 (see FIG. 5) and the fuel drain pipe outlet 35c1 (see FIG. 5) of the fuel tank fixing plate 35. It flows into the water receiving container 30.

  Two rainwater partition plates 36 are erected on the fuel tank fixing plate 35 (see FIG. 6). The rainwater partition plate 36 is liquid-tightly fixed to the fuel tank fixing plate 35. The fuel receiving container 31 a is disposed between the two rainwater partition plates 36. Therefore, the fuel discharged from the fuel receiving container 31a through the first oil drain hole 31a3 does not flow into the drainage groove 36a formed between the rainwater partition plate 36 and the side plate 3a.

Moreover, rainwater W1 that has fallen outside the soundproof case 2 may enter the inside of the soundproof case 2 through a minute gap formed between the soundproof case 2 and the side plate 3a.
The rainwater W1 that has entered in this way flows into the drainage groove 36a. The rainwater partition plate 36 that forms the drainage groove 36 a is fixed to the fuel tank fixing plate 35 in a liquid-tight manner. Accordingly, the rainwater W1 that has flowed into the drain groove 36a does not flow into the fuel receiving container 31a.
An upper drain hole 35b is formed in the drain groove 36a. For this reason, the rainwater W1 which flowed into the drainage groove 36a falls from the upper drainage hole 35b.

  Further, the rainwater W2 that has entered the inside of the soundproof case 2 from the mating surface or the like flows into the drainage groove 36a. The rainwater W2 flowing into the drainage groove 36a falls from the upper drainage hole 35b without flowing into the fuel receiving container 31a.

A water collecting portion 37b of the water collecting plate 37 is formed below the drainage groove 36a. Therefore, the rainwaters W1 and W2 dropped from the upper drain hole 35b are received by the water collecting portion 37b. A lower drain hole 37 c is formed in the water collecting plate 37. The lower drain hole 37c is formed below the water collection part 37b. Accordingly, the rainwaters W1 and W2 received by the water collecting part 37b fall from the lower drainage hole 37c.
As shown in FIG. 8, the lower drain hole 37c is opened above the rainwater dropping groove 30a formed between the water receiving container 30 and the side plate 3a. For this reason, the rainwater W1, W2 falling from the lower drain hole 37c falls into the rainwater dropping groove 30a without flowing into the water receiving container 30.

  In addition, as shown in FIG. 8, the upper end side of the water receiving container 30 is bent inward, and the rain water W1, W2 falling from the lower drainage hole 37c is effectively prevented from entering the water receiving container 30. Also good.

Thus, the fuel leaking from the fuel tank 31 flows into the water receiving container 30. Further, the rainwater W1 that has entered from between the soundproof case 2 and the side plate 3a and the rainwater W2 that has entered the inside of the soundproof case 2 from the mating surface or the like fall into the rainwater fall groove 30a without flowing into the water receiving container 30. That is, the base 3 provided in the engine-driven work machine 1 (see FIG. 1) of the present embodiment is configured to be able to separate the fuel leaked from the fuel tank 31 and the like from the rainwater that has entered the soundproof case 2. ing. The fuel leaked from the fuel tank 31 or the like is stored in the water receiving container 30, and the rainwater that has entered inside the soundproof case 2 is drained without flowing into the water receiving container 30. With such a configuration, the rainwater W1 and W2 can store the fuel leaking from the fuel tank 31 in the water receiving container 30 and the leakage from the engine 51 (see FIG. 2) and the work machine 52 (see FIG. 2). It will not be reduced.
Therefore, sufficient time is secured until the water receiving container 30 is filled with the fuel leaking from the fuel tank 31 and the leakage from the engine 51 and the work machine 52, and the engine-driven work machine 1 (see FIG. 1) is continuously operated. It becomes possible to lengthen the time.

FIG. 9 is a cross-sectional view taken along Sec2-Sec2 in FIG.
As shown in FIG. 9, an elastic member (trim seal 3d) is attached to an end of the folded portion 3c3 of the door locking portion 3c. The trim seal 3d is made of a flexible and waterproof material such as rubber. The trim seal 3d is a long member provided with a distal end portion 3d2 having a hollow circular cross-sectional shape at the distal end of the attachment portion 3d1 that sandwiches the folded portion 3c3 of the door locking portion 3c.
When the first opening / closing part 200a is closed, the tip 3d2 of the trim seal 3d abuts on the inner side of the first opening / closing part 200a to lock the first opening / closing part 200a.
Since the trim seal 3d is formed of a flexible material, when the trim seal 3d comes into contact with the first opening / closing portion 200a, the tip end portion 3d2 is elastically deformed and is in pressure contact with the first opening / closing portion 200a. And the door locking portion 3c are sealed in a liquid-tight manner.

  The rainwater W1 that falls outside the first opening / closing part 200a falls without entering the inside of the soundproof case 2 (see FIG. 1). In addition, rainwater W2 that has entered along the first opening / closing portion 200a from the mating surface of the soundproof case 2 is blocked by the trim seal 3d. The rainwater W2 blocked by the trim seal 3d flows into the side plate 3a (the side of the water receiving container 30 shown in FIG. 8). Rainwater W2 is received by the water collecting portion 37b of the water collecting plate 37 inside the side plate 3a. The rainwater W2 received by the water collecting part 37b falls from the lower drainage hole 37c to the rainwater dropping groove 30a (see FIG. 7B).

As described above, the water collecting plate 37 is also attached to the base 3 (see FIG. 1) of the engine-driven working machine 1 of the present embodiment at the position where the first opening / closing part 200a is provided. The rainwater falling groove 30a (see FIG. 7) without flowing the rainwater W2 that has entered the soundproof case 2 from the mating surface or the like into the water receiving container 30 (see FIG. 7A) even at the position where the first opening / closing portion 200a is provided. 7 (b)).
Therefore, the rainwater W1, W2 is effectively suppressed from flowing into the water receiving container 30 from the position where the first opening / closing part 200a is provided.

FIG. 10 is a cross-sectional view showing a fuel guide plate provided in the soundproof case.
As shown in FIG. 10, a fuel guide plate 320 is provided at a position corresponding to the fuel supply port 311 of the fuel tank 31 in the soundproof case 2. The fuel guide plate 320 has a flat surface portion 320a, a guide portion 320b, and a side wall portion 320c. The plane part 320a is in surface contact with the side panel 2S inside the soundproof case 2. The flat portion 320a is fixed to the side panel 2S by welding or the like. The guide part 320 b is formed by bending the lower end of the flat part 320 a toward the inside of the soundproof case 2. The guide part 320b extends to the lower side of the fuel supply port 311 and further extends to the upper side of the fuel receiving container 31a. That is, the end side of the guide portion 320 b is disposed above the wall surface 31 a 2 of the fuel receiving container 31 a and the fuel tank 31. Further, both ends (end portions in the front-rear direction) of the guide portion 320b are bent upward to form side wall portions 320c.
The side panel 2S has an opening 2S1 for connecting a fuel supply hose (not shown) or the like to the fuel supply port 311. And the structure provided with the oiling door (not shown) which can open and close opening part 2S1 may be sufficient.

For example, the fuel F1 leaking from the fuel supply port 311 during refueling falls to the guide portion 320b of the fuel guide plate 320. The fuel F1 that has fallen to the guide portion 320b flows to the space between the wall surface 31a2 and the fuel tank 31, and falls to the inside of the fuel receiving container 31a (the side on which the fuel tank 31 is disposed). The fuel F1 that has fallen inside the fuel receiving container 31a falls into the water receiving container 30 through the first oil drain hole 31a3 and the second oil drain hole 35a.
And the fuel F1 which leaks from the fuel filling port 311 during refueling does not fall into the rainwater dropping groove 30a formed between the water receiving container 30 and the side plate 3a.
As described above, the engine-driven work machine 1 (see FIG. 1) of the present embodiment includes the fuel guide plate 320 inside the side panel 2S of the soundproof case 2. The fuel F1 leaking from the fuel filler port 311 during refueling to the fuel tank 31 or the like can be caused to flow into the water receiving container 30 without dropping into the rainwater dropping groove 30a.

It should be noted that the design of the present invention can be changed as appropriate without departing from the spirit of the invention.
For example, the shape of the lower drain hole 37c (see FIG. 7B) is not limited. It may be a lower drainage hole (not shown) that opens long along the water collecting plate 37 (see FIG. 7B). Further, the shape of the upper drain hole 35b (see FIG. 7B) formed in the drain groove 36a is not limited. For example, it may be an upper drain hole (not shown) composed of a plurality of round holes or square holes.

DESCRIPTION OF SYMBOLS 1 Engine drive work machine 2 Soundproof case 3 Base 3a Side plate 30 Water receiving container 31 Fuel tank 31a Fuel receiving container 31a1 Bottom 31a3 1st oil drain hole (oil drain hole)
35 Fuel tank fixing plate 35a Second oil drain hole (oil drain hole)
35b Upper drain hole 36 Rainwater partition plate (partition plate)
37 Water collecting plate 37b Water collecting portion 37c Lower drain hole 51 Engine 52 Working machine 311 Fuel supply port (fuel supply port)
320 Fuel guide plate 320b Guide part

Claims (5)

A working machine,
An engine for driving the working machine;
A fuel tank in which fuel supplied to the engine is stored;
A water receiving container for storing fuel leaking from the engine and the fuel tank;
A base having two side plates disposed on both sides of the water receiving container;
In an engine-driven work machine comprising the work machine and a soundproof case covering the engine,
The working machine, the engine, the fuel tank, and the soundproof case are fixed to the side plate,
The water receiving container is opened at the top,
A fuel tank fixing plate is fixed to the two side plates so as to cross over the water receiving container,
A fuel receiving container for receiving fuel leaking from the fuel tank is fixed to the fuel tank fixing plate,
The fuel tank is housed and fixed in the fuel receiving container;
An engine-driven work machine, wherein a bottom surface of the fuel receiving container and the fuel tank fixing plate are formed with oil drain holes that communicate with each other and open above the water receiving container. The fuel tank is disposed inside the soundproof case,
The fuel tank has a fuel filler port extending toward the soundproof case,
The soundproof case is attached with a fuel guide plate having a guide portion extending below the fuel filler opening,
2. The engine-driven work machine according to claim 1, wherein the guide portion has a shape that allows fuel leaking from the fuel filler opening to fall inside the fuel receiving container. 3. An upper drain hole that penetrates into the inside of the soundproof case and drops rainwater that has fallen on the fuel tank fixing plate is formed through the fuel tank fixing plate,
A water collecting plate for receiving the rainwater falling through the upper drain hole is attached to the side plate,
The water collecting plate includes a water collecting portion that is bent from the side plate side toward the water receiving container side, and a lower portion that causes the rainwater received by the water collecting portion to fall between the side plate and the water receiving container. The engine-driven work machine according to claim 1, further comprising a drain hole.   The engine drive according to claim 3, wherein a partition plate facing the side plate is erected on the fuel tank fixing plate between the fixed fuel receiving container and the upper drain hole. Work machine. The fuel tank fixing plate is attached below the upper end surface to which the soundproof case is attached in the side plate,
5. The height of the partition plate from the fuel tank fixing plate is equal to or higher than a height from the fuel tank fixing plate to the upper end surface and lower than a height of a wall surface of the fuel receiving container. The engine drive work machine as described in.

Images