JP2015007374A - Engine drive type work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine drive type work machine including a radiator cover which prevents a coolant leaked from a radiator and an external liquid from being mixed and achieves excellent maintainability.SOLUTION: In an engine drive type work machine 1, a radiator 10a and a radiator cover 10b covering a portion of the radiator 10a which excludes a heat radiation surface 11 are disposed in an air-exhaust chamber 2a and the heat radiation surface 11 is exposed to the air-exhaust chamber 2a through an opening 60a of the radiator cover 10b. The radiator cover 10b seals a space between a periphery of the opening 60a and the radiator 10a and shields the radiator 10a from the air-exhaust chamber 2a in an area other than the heat radiation surface 11 to prevent rain water W1 from entering into the space between the periphery of the opening 60a and the radiator 10a and also prevent a coolant W2 leaked from a coolant replenishment port 14a from flowing out into the air-exhaust chamber 2a.

Description

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

  For example, the engine working machine described in Patent Document 1 houses the engine and the working machine inside a casing. The casing supports the engine and the generator, and includes a gantry having an oil barrier structure inside, a side wall that surrounds the engine and the work machine, and a top plate that covers the upper part of the engine and the work machine. . The lower end of the side wall is the outer surface of the gantry and is joined below the upper surface of the gantry.

JP 2012-36800 A

  The engine working machine described in Patent Document 1 has a structure in which rainwater that has entered the exhaust chamber from the exhaust port of the casing is drained to the outside of the gantry by a cover provided at the lower part of the exhaust chamber. The coolant that leaks during the water supply is also drained to the outside of the gantry. However, the coolant contained in the cooling liquid is mainly composed of ethylene glycol having antifreezing properties. If the cooling liquid is drained outside the gantry, it causes environmental pollution. Therefore, it is preferable that the casing has a structure that can prevent the coolant from being drained to the outside of the gantry.

  For example, if the coolant is stored in a water receiving container (oil barrier structure) inside the casing, the coolant is prevented from being drained outside the gantry. However, when rainwater that has fallen into the casing flows into the water receiving container, the amount of rainwater that accumulates in the water receiving container tends to exceed the capacity of the water receiving container. Accordingly, the coolant stored in the water receiving container overflows from the water receiving container together with the rainwater and easily flows out of the casing. Therefore, it is preferable that the coolant leaking from the radiator can flow into the water receiving container, and the rain water that has fallen into the casing can be drained without flowing into the water receiving container.

  Therefore, an object of the present invention is to provide an engine-driven working machine provided with a radiator cover that can prevent mixing of a coolant leaking from a radiator and an external liquid and has excellent maintainability.

  In order to solve the above problems, the present invention provides a radiator in which a machine room in which an engine for driving a work machine is disposed is formed in a casing, and a cooling surface that cools the engine dissipates heat to the atmosphere. A radiator cover that covers the radiator other than the heat radiating surface is disposed outside the machine room, and the heat radiating surface is exposed to the outside of the machine room through an opening formed in the radiator cover. The engine driven work machine. The radiator cover seals between the periphery of the opening and the radiator, shields the radiator from the outside of the machine room other than the heat radiating surface, and opens the opening toward the heat radiating surface. The liquid that has passed through the opening is prevented from entering the periphery of the opening and the radiator, and the coolant leaking from the coolant replenishment port formed in the radiator is prevented from flowing out of the machine chamber. It is characterized by that.

  According to the present invention, in order to expose the heat dissipation surface of the radiator, the periphery of the opening opening in the radiator cover is sealed between the radiator, and the liquid enters between the periphery of the opening of the radiator cover and the radiator. Is blocked. Further, the coolant leaked from the coolant replenishment port formed in the radiator does not pass between the periphery of the opening of the radiator cover and the radiator. Further, a portion other than the heat radiating surface of the radiator is shielded from the outside of the machine room by the radiator cover. Therefore, the radiator cover can prevent the coolant leaking from the coolant replenishment port from flowing out of the machine room, and mix the coolant leaking from the coolant replenishment port with external moisture such as rainwater. Can be prevented.

  Further, the radiator cover of the present invention is formed in a box shape including a front surface portion where the opening portion is open and a side surface portion where the periphery of the front surface portion is bent, and is a partition that partitions the machine room from the outside. An end of the side surface is brought into contact with the plate via a sealing member to seal between the partition plate and the end of the side surface, and the radiator is disposed between the front surface and the partition plate. It is characterized by being.

  According to this invention, it can be set as the radiator cover formed in the box shape by which a side part is formed around the front part. And between the edge part of a side part and the partition plate to which a radiator is attached is sealed, and between the circumference | surroundings of the radiator arrange | positioned between a front part and a partition plate, and the exterior of a machine room is sealed. Therefore, even if the coolant leaked from the coolant replenishment port stays around the radiator, the radiator cover can prevent the coolant from flowing out of the machine room.

  In the radiator of the present invention, the heat radiating surface is formed between an upper tank that has the coolant replenishment port and is disposed above and a lower tank that is disposed below. The coolant leaked from the coolant replenishment port flows down between the radiator and the side surface portion and stays on the side surface portion formed below the lower tank. To do.

  According to the present invention, since the coolant replenishment port is provided in the upper upper tank, the coolant leaked from the coolant replenishment port can flow downward through the unsealed radiator and the side surface portion. Since the area around the opening of the radiator cover and the radiator are sealed, the coolant leaked from the coolant replenishment port does not enter between the area around the opening and the radiator. Can be prevented from flowing out of the machine room.

  Further, the partition plate according to the present invention is characterized in that an introduction port for introducing the cooling liquid staying on the side surface portion into the machine room is opened.

  According to the present invention, the coolant staying on the side surface formed below the lower tank can be easily introduced into the machine room via the introduction port. Accordingly, the coolant leaking from the coolant replenishment port and flowing down below the lower tank can be easily introduced into the machine room, whereby the coolant leaking from the coolant replenishment port flows out of the machine room. Is blocked.

  Further, a fuel tank chamber in which a fuel tank for storing fuel supplied to the engine is disposed is formed in the casing of the present invention, and the fuel tank is a water receiving container for storing leaked fuel. In the fuel tank chamber in a state of being accommodated in the fuel tank. The machine room is provided with a discharge mechanism that allows liquid leakage from the engine to flow into the water receiving container.

  According to the present invention, when the cooling liquid is introduced into the machine room, the cooling liquid can be flowed into the water receiving container through the discharge mechanism. Since the water receiving container is a container capable of storing liquid leakage such as fuel leaking from the fuel tank, the coolant flowing into the water receiving container is also stored. Therefore, even when coolant leaks from the coolant replenishment port of the radiator, the coolant can be stored without being discharged to the surrounding environment where the engine-driven work machine is located, and environmental pollution can be prevented. Can be prevented.

  Further, the present invention is characterized in that a radiator assembly which is unitized by attaching the radiator to the radiator cover is attached to the outside of the machine room.

  According to the present invention, the radiator and the radiator cover are attached to the outside of the machine room as a unitized radiator assembly. With this structure, the radiator can be removed from the engine-driven work machine together with the radiator cover as a radiator assembly. For example, even when the seal member that seals between the periphery of the opening of the radiator cover and the radiator is deteriorated, the operator can remove the entire radiator assembly from the engine-driven work machine and replace the seal member. Can respond. Therefore, it is possible to provide an engine-driven working machine that can easily perform maintenance work of the radiator and has excellent maintainability.

  ADVANTAGE OF THE INVENTION According to this invention, the engine drive type working machine provided with the radiator cover which can prevent mixing with the cooling fluid which leaks from a radiator, and external liquid, and has the outstanding maintainability can be provided.

It is sectional drawing which shows the structure of an engine drive type working machine. It is a figure which shows the structure of a ventilation chamber. It is a perspective view which shows the structure of a radiator. It is a perspective view which shows the structure of a radiator cover. It is sectional drawing in sec1-sec1 of FIG. It is a perspective view which shows the radiator assembly with which the radiator was attached to the radiator cover. It is sectional drawing in sec2-sec2 of FIG. It is sectional drawing which shows the state in which the radiator assembly was attached to the front frame partition plate. It is a figure which shows a radiator in the state in which the radiator assembly was attached to the front frame partition plate. It is sectional drawing which shows the flow of the liquid around the radiator assembly attached to the front frame partition plate.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a cross-sectional view showing a configuration of an engine-driven working machine, and FIG. 2 is a diagram showing a configuration of an exhaust chamber.
As shown in FIG. 1, the engine-driven work machine 1 according to the present embodiment includes an exhaust chamber 2 a, a machine chamber 2 b, and a fuel tank chamber 2 c inside a casing 2 that accommodates each device. The fuel tank chamber 2c is formed on the side of the installation surface (downward), and the exhaust chamber 2a and the machine chamber 2b are provided above the fuel tank chamber 2c.
Note that the engine-driven work machine 1 of the present embodiment is provided side by side in the order of the air exhaust chamber 2a and the machine chamber 2b, with the air exhaust chamber 2a side being the front. Further, in the engine-driven work machine 1 of the present embodiment, the vertical direction is set with the fuel tank chamber 2c side as the lower side.

  In the machine room 2b, an engine 3 and a working machine 4 (a generator, a compressor, a pump, etc.) driven by the engine 3 are disposed. The fuel tank chamber 2c is provided with a tank assembly 5 including a fuel tank 5a for storing fuel to be supplied to the engine 3 and a water receiving container 5b.

The air exhaust chamber 2a is partitioned by a machine chamber 2b and a partition plate (front frame partition plate 20) and is formed in front of the casing 2, and includes a radiator assembly 10 including the radiator 10a, a muffler 30, and the like. Is done. The air exhaust chamber 2a is a space outside the machine room 2b, and the front frame partition plate 20 is a partition plate that partitions the machine chamber 2b from the outside.
In addition, the structure provided with the opening / closing door 40 in the front of the exhaust chamber 2a may be sufficient. With such a configuration, when the opening / closing door 40 is opened, the radiator assembly 10 is exposed to the outside of the casing 2, so that the attachment / detachment of the radiator assembly 10 and the maintenance of the radiator 10 a are facilitated. .

As shown in FIG. 2, the air exhaust chamber 2 a is formed in front of the machine chamber 2 b and the front frame partition plate 20 and accommodates the radiator assembly 10. As described above, the muffler 30 may be accommodated in the exhaust chamber 2a.
Further, a filler neck 50 serving as a fuel supply port to the fuel tank 5a of the tank assembly 5 is piped in the exhaust chamber 2a, and an end portion (fuel supply port) of the casing 2 is located at the position of the exhaust chamber 2a. Open to the outside. The tank assembly 5 has a structure in which a fuel tank 5a is accommodated in a water receiving container 5b, and the fuel tank 5a is fixed to the water receiving container 5b by a tank band 5c. Thus, the fuel tank 5a is disposed in the fuel tank chamber 2c in a state of being accommodated in the water receiving container 5b.

  The water receiving container 5b is a container configured to be able to store a liquid such as fuel therein and has an oil barrier structure. If the fuel tank 5a is configured to be accommodated in the water receiving container 5b, the leaked fuel can be stored in the water receiving container 5b even if the fuel leaks from the fuel tank 5a. The fuel is prevented from being discharged to the outside. Therefore, the surroundings of the engine-driven work machine 1 are prevented from being contaminated with fuel.

The radiator 10a is a device that cools the engine 3 and cools the high-temperature coolant that has been heated by heat exchange with the atmosphere. The exhaust chamber 2a is heated by heat exchange with the coolant. An exhaust port 21 for exhausting the atmosphere is provided. The exhaust port 21 is formed by opening the casing 2 that forms the ceiling portion of the exhaust chamber 2a in order to effectively exhaust high-temperature air. For this reason, rainwater (W1 shown with a broken line) may fall into the exhaust chamber 2a from the exhaust port 21, and the exhaust chamber 2a is equipped with the drainage mechanism which drains the rainwater W1 which fell.
Although the structure of the drainage mechanism is not limited, for example, an inclined plate 22a inclined toward the fuel tank chamber 2c side (downward) extends to the front of the water receiving container 5b of the tank assembly 5, A drain hole 22b is opened in the inclined plate 22a in front of the water receiving container 5b. If the drainage mechanism has such a structure, the rainwater W1 flowing through the inclined plate 22a falls from the drainage hole 22b in front of the water receiving container 5b. The air is discharged from the air discharge chamber 2a without flowing into 5b.

  Moreover, the structure which the drain hole 24 opens between the machine chamber 2b and the fuel tank chamber 2c may be sufficient. In this case, the drain hole 24 is preferably formed above the water receiving container 5b. If such a drain hole 24 opens in the machine chamber 2b, for example, a liquid such as fuel leaked from the engine 3 Leakage (W3 indicated by a two-dot chain line) is drained from the machine room 2b through the drain hole 24 and flows into the water receiving container 5b. As described above, the drain hole 24 functions as a discharge mechanism for allowing the liquid leaked matter W3 such as fuel leaking from the engine 3 to flow into the water receiving container 5b.

  The water receiving container 5b has an oil breakwater structure capable of storing fuel, and can also store the liquid leakage W3 that has flowed in. Further, the liquid leakage W3 that flows into the water receiving container 5b and is stored can be easily transferred to, for example, a transport tank, and is easily transported to a dedicated processing facility and discarded. Therefore, the engine-driven work machine 1 can easily dispose of the liquid leakage W3 (leakage fuel or the like).

The radiator assembly 10 accommodated in the exhaust chamber 2a has a structure in which a radiator cover 10b is attached to the radiator 10a, and is fixed to the exhaust frame 2a side of the front frame partition plate 20.
For example, the cooling fan 12 is attached to the machine room 2 b side of the front frame partition plate 20. The cooling fan 12 is a fan that blows air to the radiator 10 a, and the cooling liquid flowing through the radiator 10 a is configured to exchange heat with the air blown by the cooling fan 12.
Note that an engine fan (not shown) may be provided instead of the cooling fan 12.

3 is a perspective view showing the structure of the radiator, FIG. 4 is a perspective view showing the structure of the radiator cover, and FIG. 5 is a sectional view taken along sec1-sec1 of FIG.
As shown in FIG. 3, the radiator 10a has a flat pipe line (not shown) through which a coolant W2 flows from an upper tank 11a disposed above to a lower tank 11b disposed below. A heat radiating surface 11 is formed. The heat radiating surface 11 is configured such that the air is blown by the cooling fan 12 (see FIG. 2), and heat is exchanged between the cooling liquid W2 flowing through the pipeline and the air. Thus, in the radiator 10 a, the coolant that has become high temperature by cooling the engine 3 (see FIG. 2) radiates heat to the atmosphere through the heat radiating surface 11.

  In the radiator 10a, a connection port 13 to which the radiator hose H1 is connected is formed in each of the upper tank 11a and the lower tank 11b. The high-temperature coolant W2 heated by cooling the engine 3 (see FIG. 1) flows into the upper tank 11a from the connection port 13 and flows through the pipe (not shown) to the lower tank 11b. The heat is dissipated by heat exchange with the atmosphere, and the temperature drops. Then, the coolant W2 whose temperature has decreased flows from the connection port 13 of the lower tank 11b into the engine 3 through a radiator hose (not shown).

The upper tank 11 a and the lower tank 11 b are connected by side brackets 15 disposed on both side surfaces of the heat radiating surface 11. The side bracket 15 of the present embodiment has a U-shaped cross section.
As shown in FIG. 3, the side bracket 15 includes a bottom surface portion 15 a that is fixed along the side surface of the heat radiation surface 11, and a side wall portion 15 b that stands outward from the bottom surface portion 15 a (in a direction away from the heat radiation surface 11). The cross-sectional shape is a U-shape in which the side wall portion 15b stands at both ends of the bottom surface portion 15a.

  The upper tank 11a is provided with a replenishment port (coolant replenishment port 14a) for replenishing the coolant W2, and a radiator cap 14b for closing the coolant replenishment port 14a is attached to the coolant replenishment port 14a. It is done. The coolant replenishment port 14a is provided at the approximate center between the positions of both side surfaces where the side bracket 15 is disposed.

Further, an upper mounting shaft 17a for attaching a bracket (upper fixing bracket 16a) for fixing the upper portion of the radiator 10a to the radiator cover 10b (see FIG. 2) extends upward in the upper tank 11a. Two upper mounting shafts 17a are provided across the coolant replenishment port 14a.
Similarly, a lower mounting shaft 17b for attaching a bracket (lower fixing bracket 16b) for fixing the lower portion of the radiator 10a to the radiator cover 10b is extended downward in the lower tank 11b. Two lower mounting shafts 17b are provided across the center of both side surfaces where the side brackets 15 are disposed.

The upper fixed bracket 16a is an L-shaped bracket having a front surface 16a1 that is substantially parallel to the heat radiating surface 11 and a mounting surface 16a2 that is bent substantially at right angles to the surface. The front surface 16a1 has a screw hole. 16a3 is formed.
The upper fixing bracket 16a is attached to the upper mounting shaft 17a via a mounting rubber (upper mounting rubber 18a) which is an elastic member.

The upper mounting rubber 18a has a hollow and substantially cylindrical shape, and is configured such that the upper mounting shaft 17a is inserted into the central portion thereof. Further, the upper mount rubber 18a is formed with a flange portion 18a1 extending outwardly on the outer peripheral portion thereof.
A bracket insertion portion 18a2 is formed above the flange portion 18a1, and the bracket insertion portion 18a2 is configured to be insertable into an insertion hole 16a4 formed in the mounting surface 16a2 of the upper fixing bracket 16a.
One upper mounting rubber 18a and one upper fixing bracket 16a are attached to each of the two upper mounting shafts 17a.

The lower fixing bracket 16b is an L-shaped bracket having a front surface 16b1 that is substantially parallel to the heat radiating surface 11 and a mounting surface 16b2 that is bent substantially at right angles to the surface. The front surface 16b1 has a screw hole. 16b3 is formed.
Moreover, it is the structure where one lower fixing bracket 16b is attached to two lower attachment shafts 17b, and it is preferable that two screw holes 16b3 are formed in the front face 16b1.
The lower fixing bracket 16b is attached to the lower mounting shaft 17b via a mounting rubber (lower mounting rubber 18b) which is an elastic member.

  The lower mount rubber 18b has, for example, a shape in which the upper mount rubber 18a is inverted in the vertical direction, and a bracket insertion portion 18b2 is formed below the flange portion 18b1. And bracket insertion part 18b2 is comprised so that it may insert in the insertion hole 16b4 formed in the attachment surface 16b2 of the lower fixed bracket 16b. In addition, it is preferable that two insertion holes 16b4 are formed in the mounting surface 16b2 of the lower fixing bracket 16b corresponding to the position of the lower mounting shaft 17b.

The radiator 10a of the present embodiment is configured as shown in FIG. 3, and the radiator 10a is attached to the radiator cover 10b shown in FIGS. 4 and 5 to constitute the radiator assembly 10 (see FIG. 2).
As shown in FIGS. 4 and 5, when the radiator cover 10 b is attached to the front frame partition plate 20 (see FIG. 2), the periphery of the front surface portion 60 facing forward is bent to form a side surface portion 61 in all directions. It is configured to accommodate the radiator 10a (see FIG. 3) inside the box. Hereinafter, the side in which the radiator 10a is accommodated is defined as the inside of the radiator cover 10b.
Further, the radiator cover 10b has an opening 60a formed in the front surface portion 60, and when the radiator 10a is attached, the heat radiation surface 11 (see FIG. 3) is exposed to the outside of the radiator cover 10b through the opening 60a. It is configured as follows.

  Further, an opening 61a is opened at the upper portion of the radiator cover 10b at the position of the coolant replenishing port 14a (see FIG. 3) of the accommodated radiator 10a. The opening 61a is a detachable radiator cap cover 62. Blocked. And when the radiator 10a (refer FIG. 3) is attached to the radiator cover 10b, it is comprised so that the cooling fluid replenishment port 14a may be open | released outside the radiator cover 10b through the opening part 61a. The radiator cap cover 62 may be configured to be fixed to the radiator cover 10b by screwing or the like. The radiator cover 10b has the opening 61a on the upper side and the front surface 60 on the front.

A soundproof plate 63 is attached to the upper portion of the radiator cover 10b. The soundproof plate 63 is provided above the opening 60a so as to project from the front surface 60 toward the outer front of the radiator cover 10b.
The soundproof plate 63 includes a base portion 63a formed along the front surface portion 60 of the radiator cover 10b, a flange portion 63b that protrudes downward from the base portion 63a, and a distal end portion that bends downward from the front end of the flange portion 63b. 63c. Moreover, the attachment surface 63d bent in the base part 63a side is formed in the both ends of the collar part 63b.

Further, the front surface portion 60 of the radiator cover 10b has a fixing portion 60b that stands on the opposite side to the side surface portion 61 at a position where the soundproof plate 63 is attached. Two fixing portions 60b are formed corresponding to the mounting surface 63d of the soundproof plate 63, and the fixing portion 60b and the mounting surface 63d of the soundproof plate 63 are configured to overlap each other.
The overlapping fixing portion 60b and the attachment surface 63d are configured to be fastened and fixed by the screw member B1. Furthermore, it is preferable that the base portion 63a of the soundproof plate 63 is in surface contact with the front surface portion 60 of the radiator cover 10b when the fixing portion 60b and the attachment surface 63d are fastened and fixed. In this manner, the soundproof plate 63 is attached with the attachment surface 63d fastened and fixed to the fixing portion 60b of the radiator cover 10b. The mounting surface 63d may be fixed to the fixing portion 60b by welding or brazing.

  Furthermore, a configuration in which a seal member 64 made of an elastic member is provided between the base portion 63a of the soundproof plate 63 and the front surface portion 60 of the radiator cover 10b is preferable. The seal member 64 is pressed between the base portion 63a and the front surface portion 60 that are in surface contact with each other when the soundproof plate 63 is attached to the radiator cover 10b, and seals between the base portion 63a and the front surface portion 60 in a liquid-tight manner. It is preferable that For example, if the sealing member 64 is adhered to the base portion 63a, when the mounting surface 63d of the soundproof plate 63 is fastened and fixed to the fixing portion 60b of the radiator cover 10b, the space between the base portion 63a and the front surface portion 60 is determined. Is sealed with a seal member 64.

  By providing the soundproof plate 63 on the radiator cover 10b, noise generated when the air blown by the cooling fan 12 (see FIG. 2) passes through the heat radiation surface 11 (see FIG. 3) of the radiator 10a to which the radiator cover 10b is attached. (Wind noise) is reduced.

Further, on the inner side of the radiator cover 10b, there are provided leg portions 65 extending from the front surface portion 60 toward the side where the side surface portion 61 rises. The leg portions 65 are formed at four corners of the front surface portion 60 such that the height from the front surface portion 60 is higher than the height of the side surface portion 61. In addition, the leg portion 65 has an attachment surface 65 a substantially parallel to the front surface portion 60 at the end opposite to the front surface portion 60. In the leg portion 65, an end portion of a sheet metal member extending from the front surface portion 60 to the side surface portion 61 side is bent to the side surface portion 61 side substantially in parallel with the front surface portion 60 to form an attachment surface 65a.
The leg portion 65 formed in this way serves as an attachment portion when the radiator assembly 10 (see FIG. 1) is attached to the front frame partition plate 20 (see FIG. 1).

  The leg portion 65 may be configured such that the end portion on the front surface portion 60 side is bent to form a fixed surface 65b, and the fixed surface 65b is fixed in contact with the front surface portion 60 (welding or the like). . The front surface 60, the mounting surface 65a, and the fixing surface 65b are preferably formed with through holes SH through which the screw member S2 that fixes the radiator cover 10b to the front frame partition plate 20 (see FIG. 1) passes. . Further, it is preferable that the attachment surface 65a does not protrude from the radiator cover 10b when the radiator assembly 10 (see FIG. 1) is attached to the front frame partition plate 20.

In addition, the code | symbol 66 shown in FIG.4, 5 is a water receiving part. The water receiving portion 66 has an L-shaped cross section, and is fixed and attached to the front surface portion 60 inside the radiator cover 10b. The water receiving portion 66 includes a bottom portion 66a that extends from the front surface portion 60 toward the side surface portion 61, and a side portion 66b in which an end portion of the bottom portion 66a is bent upward, and includes a front portion 60 and a bottom portion 66a. It is comprised so that water may stay in between.
The side portion 66b of the water receiving portion 66 is configured to come into surface contact with the lower tank 11b (see FIG. 3) when the radiator 10a (see FIG. 3) is attached to the radiator cover 10b, and between the lower tank 11b. A sealing member (lower sealing member 67b) is attached to the radiator 10a side by sticking or the like. Details of the water receiving section 66 will be described later.
Note that the lower seal member 67b may be strongly pressed between the side portion 66b of the water receiving portion 66 and the lower tank 11b, and the space between the side portion 66b and the lower tank 11b may be liquid-tightly sealed.

  Reference numeral 60c denotes a drain outlet. The drain port 60c opens at the position of the bottom portion 66a (specifically, opens without a step difference from the bottom portion 66a), and is configured to be able to drain water staying in the bottom portion 66a.

FIG. 6 is a perspective view showing a radiator assembly in which the radiator is attached to the radiator cover.
As shown in FIG. 6, the radiator 10a is attached with an upper fixing bracket 16a and a lower fixing bracket 16b fixed to the radiator cover 10b. For example, the upper fixing bracket 16a and the lower portion are screw members S1 respectively screwed into the screw holes 16a3 formed in the front surface 16a1 of the upper fixing bracket 16a and the screw holes 16b3 formed in the front surface 16b1 of the lower fixing bracket 16b. The fixing bracket 16b is fastened and fixed to the front surface portion 60 of the radiator cover 10b. For this reason, although not shown, it is preferable that a mounting hole through which the screw member S1 is inserted is formed in the front surface portion 60 of the radiator cover 10b.
Alternatively, the screw member S1 (or equivalent) made of stainless steel or the like may be attached to the inside of the radiator cover 10b by welding or the like. The screw member S1 is inserted into the screw hole 16a3 of the upper fixing bracket 16a and the screw hole 16b3 of the lower fixing bracket 16b, and the upper fixing bracket 16a and the lower fixing bracket 16b are fastened and fixed to the screw member S1 with a nut or the like. It may be a configuration.

Moreover, it is preferable that the heat radiating surface 11 of the radiator 10a and the opening 60a of the radiator cover 10b are in the same position. With this configuration, the heat radiating surface 11 of the radiator 10a is exposed to the outside of the radiator cover 10b through the opening 60a. To do.
Further, the water receiving portion 66 of the radiator cover 10b is provided at a position below the heat radiation surface 11 of the radiator 10a attached to the radiator cover 10b. Further, the water receiving portion 66 is preferably formed over the entire width direction of the heat radiating surface 11, and the side portion 66b is in surface contact with the lower tank 11b of the radiator 10a via the lower seal member 67b. . Note that the width direction of the radiator assembly 10 is a direction perpendicular to the vertical direction and the front-rear direction.

  In addition, on the inner side of the front surface portion 60 of the radiator cover 10b (the side where the radiator 10a is accommodated), a strip-shaped upper seal member 67a that is long in the width direction is attached in advance at a position facing the upper tank 11a of the attached radiator 10a. The upper seal member 67a and the upper tank 11a are preferably in close contact with each other. Further, on the front surface portion 60 of the radiator cover 10b, a strip-shaped side seal member 67c (indicated by a mesh portion) that is long in the vertical direction is provided in advance at a position facing the side wall portion 15b of the side bracket 15 of the attached radiator 10a. It is preferable that the side seal member 67c and the side wall portion 15b are in close contact with each other.

  In FIG. 6, a region indicated by a two-dot chain line on the upper tank 11a indicates a region where the upper seal member 67a is in close contact, and a region indicated by a two-dot chain line on the lower tank 11b indicates a region where the lower seal member 67b is in close contact. Thus, it is preferable that the region where the upper seal member 67a is in close contact with the upper tank 11a and the region where the side seal member 67c is disposed are arranged without a gap. Moreover, it is preferable that the area | region where the lower seal member 67b closely_contact | adheres to the lower tank 11b and the area | region where the side part seal member 67c are arrange | positioned are arrange | positioned without gap.

When the radiator cover 10b has such a configuration, when the radiator 10a is attached, the upper seal member 67a is in close contact between the front surface 60 and the radiator 10a (upper tank 11a) above the opening 60a. The side seal member 67c is in close contact with the side of the part 60a between the front part 60 and the radiator 10a (the side wall part 15b of the side bracket 15). The lower seal member 67b is in close contact with the lower portion of the opening 60a between the side portion 66b of the water receiving portion 66 and the radiator 10a (lower tank 11b). That is, the seal members (upper seal member 67a, lower seal member 67b, side seal member 67c) are in close contact with each other between the periphery of the opening 60a of the radiator cover 10b and the radiator 10a. With such a configuration, the periphery of the opening 60a is sealed between the radiator cover 10b and the radiator 10a.
In addition, all the sealing members (upper seal member 67a, lower seal member 67b, side seal member 67c) are strongly pressed between the periphery of the opening 60a and the radiator 10a, so that the space between the periphery of the opening 60a and the radiator 10a. May be configured to be hermetically sealed.

  Accordingly, the water (rain water W1 and the like) that has entered between the radiator surface 10a and the radiator cover 10b from the opening 60a does not enter between the front surface 60 of the radiator cover 10b and the radiator 10a, and is formed below. The water receiving part 66 (bottom part 66a) falls and stays. Furthermore, the water staying in the water receiving portion 66 (bottom portion 66a) is drained to the outside of the radiator cover 10b through the drainage port 60c opened in the front surface portion 60.

FIG. 7 is a cross-sectional view taken along sec2-sec2 in FIG.
As shown in FIG. 7, a sealing member (end seal member 80) is attached to the end of the side surface 61 of the radiator cover 10b. The end seal member 80 is a long member in which a fixing portion 80a capable of sandwiching the end portion of the side surface portion 61 and a seal portion 80b formed on the fixing portion 80a are continuously formed in a band shape. The fixing portion 80a has a structure in which the side surface portion 61 that enters between the forked shapes is sandwiched between the claw-shaped portions. The seal portion 80b is made of an elastic member such as rubber, and can be elastically deformed in a direction in which the side surface portion 61 enters the fixing portion 80a, so that the seal portion 80b is in close contact with a member that presses the sealing portion 80b toward the fixing portion 80a. It is configured.

  The end seal member 80 is attached over the entire circumference of the side surface portion 61 formed around the front surface portion 60. As shown in FIG. 4, when the front surface portion 60 of the radiator cover 10b is configured in an octagonal shape, sudden bending of the end seal member 80 that bends along the side surface portion 61 at the corner portion is avoided. The end seal member 80 can be attached to the side surface 61 without difficulty.

  A sealing member (horizontal seal member 82) is also attached to the end of the side wall 15b of the side bracket 15. The horizontal seal member 82 is a long member in which a fixed portion 82a capable of holding the side wall portion 15b and a seal portion 82b formed on the fixed portion 82a are continuously formed in a band shape. The fixing portion 82a has a structure in which the side wall portion 15b that enters between the forked shapes is sandwiched between the claw-shaped portions. Further, the seal portion 82b is made of an elastic member such as rubber, and can be elastically deformed in a direction substantially orthogonal to the direction in which the side wall portion 15b enters the fixed portion 82a. The seal portion 82b is formed on the side wall portion 15b of the side bracket 15. It is comprised so that it may closely_contact | adhere to the member pressed to the side.

The horizontal seal member 82 is formed so that the side wall portion 15b on the side away from the front surface portion 60 (the front frame partition plate when the radiator assembly 10 (see FIG. 2) is attached to the front frame partition plate 20 (see FIG. 2)). It is attached to the side wall 15b) which becomes the 20 side. Further, the horizontal seal member 82 is disposed on both of the two side brackets 15 disposed on both sides of the heat radiation surface 11 (see FIG. 6).
Note that some of the sealing members having shapes such as the end seal member 80 and the horizontal seal member 82 are commercially available, and in this embodiment, commercially available products can be used as they are.

FIG. 8 is a sectional view showing a state in which the radiator assembly is attached to the front frame partition plate, and FIG. 9 is a view showing the radiator in a state in which the radiator assembly is attached to the front frame partition plate.
As shown in FIG. 8, the radiator assembly 10 is configured such that the attachment surface 65 a is in contact with the front frame partition plate 20 while the attachment surface 65 a formed on the leg portion 65 of the radiator cover 10 b is in contact with the front frame partition plate 20. It is attached to the front frame partition plate 20 by being fixed to.
The method of fixing the mounting surface 65a to the front frame partition plate 20 is not limited. For example, a configuration in which the mounting surface 65a is fastened and fixed by a screw member S2 that is mounted so as to penetrate the radiator cover 10b from the side of the exhaust chamber 2a. And it is sufficient. Therefore, the screw member S2 penetrates through the front frame partition plate 20 in addition to the through hole SH (see FIG. 4) formed in the radiator cover 10b, the attachment surface 65a and the fixing surface 65b of the leg 65. A through hole SH is preferably formed. Moreover, it is preferable that the nut member N2 to which the screw member S2 is screwed is fixed to the position of the through hole SH on the machine chamber 2b side of the front frame partition plate 20.

The mounting surface 65a may be fastened and fixed by the screw member S2 from the front frame partition plate 20 side. In this case, a mounting hole (not shown) through which the screw member S2 passes is formed in the front frame partition plate 20, and a screw hole (not shown) into which the screw member S2 is screwed is processed in the mounting surface 65a. Any configuration is acceptable.
Thus, in the engine-driven working machine 1 (see FIG. 1) of the present embodiment, the radiator 10a is disposed between the front surface portion 60 of the radiator cover 10b and the front frame partition plate 20. And the front part 60 and the side part 61 are arrange | positioned around the radiator 10a, and the radiator cover 10b is arrange | positioned around the radiator 10a.

  Further, as described above, since the leg portion 65 is formed such that the height from the front surface portion 60 is higher than the height of the side surface portion 61, the mounting surface 65 a of the leg portion 65 is fixed to the front frame partition plate 20. When this occurs, a gap is formed between the side surface portion 61 and the front frame partition plate 20. However, if the seal portion 80 b of the end seal member 80 attached to the side surface portion 61 is formed higher than the gap generated between the side surface portion 61 and the front frame partition plate 20, the leg portion is attached to the front frame partition plate 20. When 65 is fixed, the seal portion 80b of the end seal member 80 is pressed and deformed by the front frame partition plate 20. The seal portion 80b of the end seal member 80 is in close contact with the front frame partition plate 20, and the space between the side surface portion 61 of the radiator cover 10b and the front frame partition plate 20 is sealed. Further, since the end seal member 80 is disposed over the entire circumference of the side surface portion 61, the mesh area shown in FIG. 8 is an area in which the end seal member 80 is disposed. As described above, the gap between the side surface portion 61 of the radiator cover 10b and the front frame partition plate 20 is sealed with the end seal member 80 over the entire circumference. And the radiator 10a is arrange | positioned by the front part 60 and the side part 61 of the radiator cover 10b, and is arrange | positioned by the ventilation chamber 2a.

  The seal portion 80b of the end seal member 80 is strongly pressed between the side surface portion 61 of the radiator cover 10b and the front frame partition plate 20, and the space between the side surface portion 61 and the front frame partition plate 20 is liquid-tightly sealed. It may be a configuration.

  Moreover, as shown in FIG. 9, the heat radiating surface 11 of the radiator 10a is exposed to the exhaust chamber 2a through the opening 60a of the radiator cover 10b. That is, the radiator 10a and the radiator cover 10b are disposed outside the machine room 2b, and the heat radiation surface 11 of the radiator 10a is exposed to the outside of the machine room 2b through the opening 60a. The radiator 10a is covered with a radiator cover 10b except for the heat radiating surface 11.

  As described above, the periphery of the opening 60a is sealed between the radiator cover 10b and the radiator 10a (or liquid-tightly sealed). Furthermore, as shown in FIG. 8, the space between the side surface portion 61 of the radiator cover 10b and the front frame partition plate 20 is sealed by the end seal member 80 over the entire circumference (or liquid-tightly sealed). . With such a configuration, except for the heat radiating surface 11 of the radiator 10a, the radiator cover 10b is shielded from the exhaust chamber 2a in a liquid-tight manner.

In addition, it is preferable that the space between the upper tank 11a and the lower tank 11b of the radiator 10a and the front frame partition plate 20 be sealed by the seal member 83. For example, in the front frame partition plate 20, a belt-like long seal member 83 is attached to the positions of the upper tank 11a and the lower tank 11b by sticking or the like, and seals over the entire width direction of the upper tank 11a and the lower tank 11b. What is necessary is just to set it as the structure by which the member 83 is arrange | positioned. With this configuration, when the radiator assembly 10 is attached to the front frame partition plate 20, the space between the upper tank 11a and the lower tank 11b and the front frame partition plate 20 is sealed by the seal member 83.
The seal member 83 is strongly pressed between the upper tank 11a and the lower tank 11b and the front frame partition plate 20, and the space between the upper tank 11a and the lower tank 11b and the front frame partition plate 20 is liquid-tightly sealed. It may be a configuration.

Further, as shown in FIG. 7, a lateral seal member 82 is attached to the side bracket 15 of the radiator 10 a on the side wall portion 15 b on the front frame partition plate 20 side.
Therefore, if the seal portion 82b of the horizontal seal member 82 to be attached is formed higher than the gap formed between the side wall portion 15b and the front frame partition plate 20, the radiator assembly 10 is attached to the front frame partition plate 20. When this occurs, the seal part 82b of the horizontal seal member 82 is pressed and deformed by the front frame partition plate 20. Then, the seal portion 82b of the horizontal seal member 82 is in close contact with the front frame partition plate 20, and the space between the front frame partition plate 20 and the radiator 10a (side wall portion 15b of the side bracket 15) is sealed.
The seal portion 82a of the horizontal seal member 82 is strongly pressed between the side bracket 15 of the radiator 10a and the front frame partition plate 20, so that the space between the front frame partition plate 20 and the side wall portion 15b of the side bracket 15 is liquid-tight. The structure sealed may be sufficient.

Further, since the horizontal seal member 82 is disposed over the entire length of the side bracket 15 in the vertical direction, the space between the front frame partition plate 20 and the side wall portion 15b of the side bracket 15 is a region indicated by a mesh in FIG. Sealed (or liquid tightly sealed).
Further, the upper and lower sides of the side bracket 15 are sealed by the seal member 83 between the upper tank 11a and the front frame partition plate 20 and between the lower tank 11b and the front frame partition plate 20 (or liquid-tightly sealed). Therefore, the periphery of the region surrounded by the horizontal seal member 82 and the seal member 83 is sealed.

  As described above, the radiator 10a (see FIG. 2) provided in the engine-driven working machine 1 (see FIG. 1) of the present embodiment is a radiator assembly that is unitized by being attached to the radiator cover 10b as shown in FIG. 10 is attached to the exhaust chamber 2a (see FIG. 1). Further, as shown in FIG. 8, the radiator assembly 10 is configured such that the mounting surface 65 a of the leg portion 65 is fastened and fixed to the front frame partition plate 20 by a screw member S <b> 2 inserted from the side of the wind exhaust chamber 2 a. It is attached to the chamber 2a. Therefore, for example, an operator who maintains the radiator 10a can take out the radiator 10a together with the radiator assembly 10 from the air exhaust chamber 2a. Further, the operator can remove the radiator assembly 10 from the front frame partition plate 20 by an easy operation of releasing the fastening and fixing of the leg portion 65 and the front frame partition plate 20. Therefore, for the operator, maintenance work of the radiator assembly 10 including the radiator 10a is facilitated, and the engine-driven work machine 1 having excellent maintainability can be provided.

FIG. 10 is a cross-sectional view showing the flow of the liquid around the radiator assembly attached to the front frame partition plate.
As shown in FIG. 10, the radiator assembly 10 attached to the front frame partition plate 20 is accommodated in the exhaust chamber 2a. Therefore, rainwater W1 that has descended from the exhaust port 21 that opens to the ceiling of the exhaust chamber 2a may pass through the opening 60a toward the heat radiation surface 11 of the radiator 10a and pour into the radiator cover 10b. However, since the periphery of the opening 60a of the radiator cover 10b and the space between the radiator 10a are sealed with seal members (upper seal member 67a, lower seal member 67b, side seal member 67c (see FIG. 6)) (or Therefore, rainwater W1 that has entered the inside of the radiator cover 10b from the opening 60a flows into the water receiving portion 66.

  Further, the rainwater W1 flowing into the water receiving section 66 passes through the drain port 60c, is discharged to the outside of the radiator cover 10b, and flows into the wind discharge chamber 2a. Thus, the rainwater W1 (liquid) passing through the opening 60a from the exhaust chamber 2a toward the heat radiation surface 11 of the radiator 10a returns to the exhaust chamber 2a through the water receiving section 66 and the drain port 60c. Therefore, the rainwater W1 (liquid) that passes through the opening 60a toward the heat radiation surface 11 of the radiator 10a is prevented from entering the machine chamber 2b.

The rainwater W1 flowing into the exhaust chamber 2a flows through the inclined plate 22a constituting the drainage mechanism to the drain hole 22b, and is drained outside the casing 2 without flowing into the water receiving container 5b.
In addition, since the radiator cover 10b of this embodiment is provided with the soundproof plate 63 so as to protrude toward the front surface portion 60, a part of the rainwater W1 that has fallen from the air exhaust port 21 is placed inside the radiator cover 10b. The air can be poured into the air exhaust chamber 2a without being put in and drained to the outside of the casing 2 through the drainage mechanism. That is, the soundproof plate 63 provided for noise reduction also has a function of preventing the rainwater W1 from entering the radiator cover 10b.

  Further, the coolant W2 leaked from the coolant replenishment port 14a when the coolant W2 is replenished flows along the upper tank 11a. However, the space between the upper tank 11a and the front surface portion 60 of the radiator cover 10b is sealed by the upper seal member 67a (or liquid-tightly sealed). Further, the space between the upper tank 11a and the front frame partition plate 20 is sealed by a seal member 83 (or liquid-tightly sealed). Therefore, the coolant W2 leaking from the coolant replenishment port 14a does not enter between the upper tank 11a and the front surface portion 60 and between the upper tank 11a and the front frame partition plate 20, and the periphery of the opening portion 60a. It does not flow out from the opening 60a to the exhaust chamber 2a through the radiator 10a. Then, the coolant W2 leaking from the coolant replenishment port 14a flows along the upper tank 11a toward the side surface 61 of the radiator cover 10b.

  Since the space between the side surface portion 61 and the upper tank 11a is not sealed, the coolant W2 flows between the side surface portion 61 and the upper tank 11a. A side bracket 15 having a U-shaped cross section is provided below the upper tank 11a (between the lower tank 11b) on the side surface portion 61 side, and therefore flows between the upper tank 11a and the side surface portion 61. The coolant W2 flows down to the lower tank 11b using the side bracket 15 as a flow path.

  A space between the lower tank 11b and the front surface portion 60 of the radiator cover 10b is sealed by a lower seal member 67b (or liquid-tightly sealed). Further, the space between the lower tank 11b and the front frame partition plate 20 is sealed with a seal member 83 (or liquid-tightly sealed). Therefore, the coolant W2 flowing down to the lower tank 11b cannot flow between the lower tank 11b and the front surface portion 60 and between the lower tank 11b and the front frame partition plate 20. Therefore, the coolant W2 that has flowed down to the lower tank 11b flows to the side surface portion 61 side of the radiator cover 10b. Since the space between the side surface portion 61 and the lower tank 11b is not sealed, the coolant W2 flows between the side surface portion 61 and the lower tank 11b and falls inside the radiator cover 10b.

Since the space between the radiator cover 10b (side surface portion 61) and the front frame partition plate 20 is sealed by the seal portion 80b of the end seal member 80 (or liquid-tightly sealed), the radiator cover 10b The coolant W2 that has dropped to the inside of the radiator cannot pass between the side surface portion 61 of the radiator cover 10b and the front frame partition plate 20, and the coolant W2 stays inside the radiator cover 10b. That is, the coolant W2 leaked from the coolant replenishment port 14a stays on the side surface portion 61 formed below the lower tank 11b.
Thus, the coolant W2 leaked from the coolant replenishment port 14a of the radiator 10a is blocked from flowing into the exhaust chamber 2a and stays on the side surface 61 on the inside of the radiator cover 10b.

  Further, the coolant W <b> 2 that stays on the side surface portion 61 inside the radiator cover 10 b may be configured to flow into the machine chamber 2 b through the introduction port 20 a that opens to the front frame partition plate 20. Such an introduction port 20a is preferably formed at a position that is located inside the radiator cover 10b when the radiator assembly 10 is attached to the front frame partition plate 20. With such a configuration, a part of the cooling liquid W2 staying inside the radiator cover 10b (on the side surface 61 formed below the lower tank 11b) can be effectively poured into the machine chamber 2b.

  The machine room 2b has a drain hole 24 for draining a liquid leak W3 (see FIG. 2) such as fuel leaking from the engine 3 and collecting it in the water receiving container 5b. Therefore, the coolant W2 flowing into the machine room 2b flows into the water receiving container 5b through the drain hole 24. As described above, the water receiving container 5b has an oil barrier structure capable of storing the liquid leakage W3, and the inflowing coolant W2 is also stored in the water receiving container 5b. Accordingly, the coolant W2 is prevented from flowing out of the casing 2, and contamination of the surrounding environment where the engine-driven work machine 1 (see FIG. 1) is disposed is prevented.

  As shown in FIG. 10, rainwater W1 (external moisture) that has entered the exhaust chamber 2a is returned to the exhaust chamber 2a from the drain port 60c even if it passes through the opening 60a toward the heat radiating surface 11. On the other hand, the coolant leaked from the coolant replenishment port 14a is prevented by the radiator cover 10b from flowing into the exhaust air chamber 2a. Therefore, the radiator cover 10b of the present embodiment can prevent mixing of the coolant W2 leaking from the radiator 10a and external moisture such as rainwater W1, and the engine-driven work machine 1 (see FIG. 1). It is possible to prevent contamination of the surrounding environment where the is disposed.

As described above, the engine-driven work machine 1 (see FIG. 1) of the present embodiment receives the rainwater W1 that has fallen into the exhaust chamber 2a in which the radiator assembly 10 is disposed, as shown in FIG. The water can be drained without flowing into the water container 5b.
Further, the coolant W2 leaking from the coolant replenishment port 14a of the radiator 10a can be stored inside the radiator cover 10b or in the water receiving container 5b without flowing out of the casing 2. Since the coolant W2 contains a substance that causes environmental pollution such as coolant, when the coolant W2 flows out of the casing 2, the periphery of the engine-driven work machine 1 is contaminated. However, the contamination around the engine-driven work machine 1 can be reduced by storing the coolant W2 inside the radiator cover 10b or in the water receiving container 5b.

Further, the engine-driven work machine 1 (see FIG. 1) of the present embodiment can drain the rainwater W1 that does not cause environmental pollution into the outside of the casing 2 without flowing into the water receiving container 5b. When the rainwater W1 flows into the water receiving container 5b, the accumulated matter easily overflows beyond the capacity of the water receiving container 5b, and the coolant W2 and the liquid leakage W3 stored in the water receiving container 5b (FIG. 2). Etc.) overflows together with the rainwater W1 and easily flows out of the casing 2.
The engine-driven work machine 1 according to the present embodiment can drain the rainwater W1 without flowing it into the water receiving container 5b. Therefore, it is possible to provide the engine-driven work machine 1 in which the overflow of the water receiving container 5b is unlikely to occur, and the engine-driven work that can effectively prevent environmental pollution due to the outflow of the coolant W2 and the liquid leak W3. Machine 1 can be provided.

In addition, the radiator 10a (see FIG. 2) of the present embodiment is attached to the radiator cover 10b (see FIG. 2) and unitized as a radiator assembly 10 (see FIG. 2) in the exhaust chamber 2a (see FIG. 2). Attached). With such a configuration, for example, due to deterioration of the seal members (upper seal member 67a, lower seal member 67b, side seal member 67c) shown in FIG. 6, adhesion of foreign matters, and the like, between the radiator 10a and the radiator cover 10b. Even if the sealing performance is deteriorated, an operator who performs maintenance can take out the seal member together with the radiator assembly 10 from the exhaust chamber 2a, and can deal with the replacement or cleaning of the seal member.
Similarly, sealing performance between the radiator 10a and the front frame partition plate 20 and the radiator cover 10b due to deterioration of the sealing members (end seal member 80, horizontal seal member 82) shown in FIG. Even if the sealing performance between the front frame partition plates 20 deteriorates, the worker who performs maintenance takes out the sealing member together with the radiator assembly 10 from the exhaust chamber 2a, and takes measures such as replacement and cleaning of the sealing member. Is possible.

  Therefore, for example, a difficult operation such as replacement of the sealing member and sealing member in a narrow place by an operator entering the radiator storage chamber 2a or cleaning is not necessary, and the engine-driven work machine 1 (excellent maintainability) ( FIG. 1) can be provided.

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, an end seal member 80 as shown in FIG. 7 is attached to the end of the side surface 61 (see FIG. 4) in the radiator cover 10b (see FIG. 4) of the present embodiment. However, instead of the end seal member 80, a band-shaped seal member may be attached to the end portion of the side surface portion 61 by sticking or the like.
Similarly, instead of the horizontal seal member 82, a configuration may be adopted in which a belt-like seal member is attached to the side wall portion 15b of the side bracket 15 by sticking or the like.

  Further, the shape of the soundproof plate 63 is not limited to the shape shown in FIG. For example, the shape which does not have the attachment surface 63d may be sufficient. In this case, for example, the base 63a may be configured to be fastened and fixed to the front surface 60 of the radiator cover 10b by the screw member B1 or the like.

  In addition, for example, the engine-driven work machine 1 in which the exhaust chamber 2a illustrated in FIG. 1 is not formed may be used. In this case, the radiator assembly 10 is attached to the outside of the casing 2. And the radiator cover 10b (refer FIG. 4) goes to the inside of the casing 2 of the rainwater W1 (refer FIG. 2) which passes the opening part 60a (refer FIG. 4) toward the thermal radiation surface 11 (refer FIG. 3) of the radiator 10a. It functions to prevent the intrusion.

1 Engine-driven working machine 2 Casing 2a Exhaust chamber (outside the machine room)
2b Machine room 2c Fuel tank room 3 Engine 5a Fuel tank 5b Water receiving container 10 Radiator assembly 10a Radiator 10b Radiator cover 11 Heat radiation surface 11a Upper tank 11b Lower tank 14a Coolant replenishment port 20 Front frame partition plate ( Partition plate)
20a Inlet 24 Drainage hole (discharge mechanism)
60 Front part 60a Opening part 61 Side part 80 End part sealing member (sealing member)
W1 rain water (liquid)
W2 Coolant W3 Liquid leakage

Claims (6)

A machine room in which an engine for driving the work machine is disposed is formed inside the casing,
A radiator having a heat radiating surface that radiates the cooling liquid that has cooled the engine to the atmosphere, and a radiator cover that covers other than the heat radiating surface of the radiator are disposed outside the machine room,
The heat dissipating surface is an engine-driven work machine that is exposed to the outside of the machine room through an opening formed in the radiator cover,
The radiator cover is
Sealing between the periphery of the opening and the radiator, and shielding the radiator from the outside of the machine room other than the heat dissipation surface,
The machine of the coolant that has leaked from the coolant replenishment port formed in the radiator, preventing the liquid that has passed through the aperture toward the heat radiating surface from entering the periphery of the aperture and the radiator. An engine-driven working machine characterized by preventing outflow to the outside of a chamber. The radiator cover is
A front portion where the opening is open;
Formed in the shape of a box consisting of a side part bent around the front part,
The partition plate partitioning the machine room and the outside is in contact with the end portion of the side surface portion via a sealing member to seal between the partition plate and the end portion of the side surface portion,
The engine-driven work machine according to claim 1, wherein the radiator is disposed between the front portion and the partition plate. The radiator is
The heat radiating surface is formed between an upper tank disposed above with the coolant replenishment port and a lower tank disposed below.
The coolant leaking from the coolant replenishing port flows down between the radiator and the side surface and stays on the side surface formed below the lower tank. Item 3. The engine-driven work machine according to Item 2.   4. The engine-driven work machine according to claim 3, wherein the partition plate has an opening for introducing the cooling liquid staying on the side surface portion into the machine room. A fuel tank chamber in which a fuel tank for storing fuel supplied to the engine is disposed is formed inside the casing, and the fuel tank is stored in a water receiving container for storing leaked fuel. Arranged in the fuel tank chamber,
The engine-driven work machine according to claim 4, wherein the machine room is provided with a discharge mechanism that allows liquid leaked material leaking from the engine to flow into the water receiving container.   The engine drive type according to any one of claims 1 to 5, wherein a radiator assembly unitized by attaching the radiator to the radiator cover is attached to the outside of the machine room. Work machine.

Images