JP3364858B2 - Engine driven work equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling structure, a compact structure, and a cooling structure in an engine-driven work device in which a work device, for example, a hydraulic pump or other hydraulic work device, or a generator is connected to an engine output shaft. Simplified structure,
Furthermore, it relates to a device support structure.

[0002]

2. Description of the Related Art An example of a structure in which an engine-driven working device is built in a box and packaged is shown in FIG. This structure will be briefly described. The entire body is covered with a soundproof bonnet 1 ', and the front side of the bonnet 1'in the figure is the intake side 1'a.
As a result, a large number of slits 1'b for introducing air are formed. Among them, the front side in the drawing is an engine room ER 'in which an engine-driven working device is installed, and the rear side through the radiator R'is a control panel CP', a hydraulic oil tank HOT ', a hydraulic oil cooler HOC. ', Fuel tank FO
It is a low temperature air chamber LR where T'and the exhaust port 1'c are arranged. A common base 3 ', on which all members are mounted and installed, is laid at the bottom.

In the engine room ER ', the engine E'is vibration-proof supported on the common base 3'through a vibration-proof rubber 13'. A gearbox GB is formed on the output shaft side of the engine E ', and a dual hydraulic pump, that is, a low pressure pump P1' and a high pressure pump P2 'are connected to the engine E'through the gearbox GB. Are arranged in parallel with each other, and these are also vibration-isolated and supported by the common base 3'by the vibration isolation rubber 13 'independently of the engine E'. Further, the gearbox GB has an auxiliary hydraulic pump mounting shaft G
Ba is provided in a protruding manner, and in this embodiment, the generator D is driven by belt transmission from the other power take-off shaft. Thus, the engine-driven working device is constructed.

Similarly, in the engine room ER ',
The common base 3'is parallel to the engine-driven working device.
Is equipped with a battery B ', and an exhaust muffler EM' is disposed above the engine-driven working device and the radiator R ', and the ceiling of the bonnet 1'in the low temperature air chamber behind the radiator R'. Exhaust port 1'b formed in
Exhaust pipe EP 'is extended with respect to.

[0005]

In the conventional box-built-in type engine-driven working apparatus shown in FIG. 11, the cooling mechanism, the simplification and compactness of the structure, and the supporting structure thereof are not enough. There is a problem. First, the cooling structure will be described. In the engine-driven working apparatus shown in FIG. 11, a discharge-type radiator is used as the radiator R'for cooling the engine inside. That is, engine E '
Radiator air is drawn into the radiator fan RF ′ included in the engine from the engine room ER ′ in which the engine-driven working device is installed. In this structure, the temperature around the control panel CP 'in the engine room ER' is relatively high. In addition, the low temperature air chamber L separated by the partition wall
The hydraulic oil cooler HOC 'installed at R is the engine E'
Since it is not possible to cool with intake air by the radiator fan RF 'included in the above, it is necessary to have a unique cooler fan, which raises the cost of the hydraulic oil cooler HOC' and the need to secure a power source for the cooler fan.

If the radiator R'is assumed to be a suction type radiator, a partition wall is attached around the radiator,
As the intake air chamber of the radiator, an intake duct isolated from the engine room may be provided inside the box (bonnet 1 '). However, first, in the engine room, the air which has passed through the radiator and has a high temperature enters, and unless the temperature of the air in the intake air chamber is sufficiently low, the cooling effect in the engine room is small. In addition, this is a structure that wraps around through the gaps between the piping around the engine, the wiring, and the inner wall of the box (bonnet 1 '), has a large air passage resistance, and is an engine-driven working device in the engine room, etc. The cooling effect on each of the parts is weak, and the engine performance itself may deteriorate.

Next, problems in terms of compactness and structure simplification will be described. First, hydraulic oil cooler HO
Regarding C ′, since it is an air-cooled type, it is necessary to attach a fan for sucking outside air, which leads to high cost and expansion of installation space. If the intake air of the radiator fan is available, this fan arrangement can be eliminated. Other than that, the hydraulic oil tank HOT and the fuel tank FOT have a space for the exclusive use in the bonnet 1'in the horizontal direction, so that the bonnet 1'is inevitably expanded.

In the support structure for the engine-driven working device, the engine E'and the hydraulic pumps P1 'and P
Since the work devices such as 2'and the generator D are arranged in parallel with each other through the gear box GB, a bending moment is apt to occur in the direct connection portion between the engine output shaft and the gear box GB, and the vibration-proof support is provided. In the structure, the disposition position of the anti-vibration rubber must be carefully considered. In addition, an installation space and cost are required for the installation of the gear box GB.

[0009]

The present invention uses the following means in order to solve the above problems. In claim 1
Install the engine-driven working device inside the box.
Inside the intake duct 2 isolated from the engine room ER
And an intake air chamber SR is formed inside the intake air chamber SR.
Engine from air chamber SR via suction radiator R
In the structure where cooling air is introduced into the room ER, the intake air
The radiator R in the air chamber SR has a radiator on the air suction surface.
A heat exchanger other than R is installed internally .

According to a second aspect, the engine according to the first aspect is
In a gin-driven work device, the engine-driven work equipment
The control panel CP of the unit is installed in the intake duct 2 and
The operation portion is directed to the intake side surface of the box body .

According to a third aspect of the present invention, there is provided the engine according to the first aspect.
In the gin drive type working device, in the intake air chamber SR
To cover the entire air intake surface of the radiator R.
Intercooler I which is a heat exchanger for cooling the supply air of Jin E
C and a working oil cooler HOC for the working device are internally provided .

[0012] In claim 4, claim 3, wherein the ene
In the gin drive type working device, the intercooler IC
And the fuel tank FOT below the hydraulic oil cooler HOC
It is arranged .

According to a fifth aspect, the engine according to the fourth aspect is provided.
In the gin drive type working device, above the fuel tank FOT
To the intercooler IC and hydraulic oil cooler HO
C and a radiator R are arranged .

According to a sixth aspect, the engine according to the first aspect is
Hydraulic pressure directly connected to the engine in gin-driven work equipment
A hydraulic oil tank HOT is arranged above the working device .

In claim 7, the engine according to claim 6
In the gin drive type working device, the inner wall of the box and the hydraulic oil tank are
Exhaust duct in the area surrounded by HOT
It is.

[0016] In claim 8, the engine according to claim 1
In the gin drive type working device, the mounting leg material 12 for mounting the engine is extended, and the working device is attached to the extended portion of the mounting leg material 12.

According to a ninth aspect, the engine according to the eighth aspect is provided.
In a gin-driven work device, the engine-driven work equipment
The extended portion of the mounting leg member 12 to which the stand is attached is vibration-proof supported.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings. 1 is an internal side view of a box-embedded engine-driven working device, FIG. 2 is an internal plan view of the same, and FIG. 3 is a front view of the bonnet 1 seen from the intake side surface 1a side.
FIG. 4 is a front view of the inside of the intake duct 2, and FIG. 5 is a control panel C.
Intake duct 2 showing the arrangement structure of P and fuel tank FOT
A side view of the part, FIG. 6 is an internal plan view of the control panel room CR,
7 is a side view of the inside of the direct connection member 14, FIG. 8 is a perspective view showing a method of attaching the protective cover 16 for preventing leakage and scattering to the flange F, FIG. 9 is a plan view of the protective cover 16, and FIG. FIG. 8 is a side sectional view showing the sewing of and the attachment of the wire 17;

The overall construction of the box-type engine-driven working apparatus will be described with reference to FIGS. 1 to 6. The box body that covers the entire body is a soundproof bonnet 1, and most of the inside is an engine room ER, which is a room for installing an engine-driven working device in which various working devices are connected to the engine E. ing. An intake duct 2 forming a box structure having a double structure with the bonnet 1 is provided on the upper side (right side in FIG. 1) of the engine E, and the intake duct 2 is separated by a partition wall 2b and sucked. An air chamber SR and a control panel chamber CR are formed. Then, the air suction surface of the radiator R is attached to a portion of the side plate (partition side plate 2a) forming a partition with the engine room ER of the intake duct 2 facing the intake air chamber SR, and in the engine room ER, A radiator fan RF arranged on the lower side of the radiator R faces the engine E. With such a configuration, the air taken into the radiator R from the intake air chamber SR is sent around the engine E as engine cooling air. A heat insulating material 6 such as a foaming sponge material is provided between the edge of the partition side plate 2a and the inner surface of the bonnet 1, and the engine 6 is provided between the outer surface of the intake duct 2 and the inner surface of the bonnet 1. It is prevented that hot air from the room ER enters and warms the intake duct 2 to raise the temperature of the intake air chamber SR inside.

In the lower part of the bonnet 1, side frames 4 of U-shaped steel material in cross section are arranged in parallel to the left and right, and the lower end portions of both side plates of the bonnet 1 are attached. A common base 3 is formed between the side frames 4 and 4. (The side frame 4 shown in FIG. 1 is the side frame 4 on the opposite side.) The common base 3 is a part of the engine room ER from below the intake duct 2 (a part below the radiator R and the radiator fan RF).
The lower part 3b is formed to be a space for arranging the fuel tank FOT, and the other parts in the engine room ER are the upper part 3a, which is one step higher. The battery B is mounted and supported. It should be noted that a U-shaped steel material is also disposed at an appropriate position in the lower floor portion of the upper stage portion 3a of the common base 3 to reinforce it. Further, the stanchions 5, 5 are erected from the central portions of both side frames 4, 4 to reinforce the bonnet 1.

Next, the structures of the intake air chamber SR and the control panel chamber CR formed in the intake duct 2 will be described. First, in the intake air chamber SR, the right end surfaces of the intake duct 2 and the bonnet 1 in FIG. 1 are intake side surfaces, and the intake side surface 1a of the bonnet 1 has slits for intake of air as shown in FIG. 1b, 1b ... are drilled,
The intake side surface of the intake duct 2 has the same structure. The air in the intake air chamber SR sucked from these intake side surfaces is first used as engine intake air, and the inlet portion of the intake pipe SP of the engine E is introduced into the intake duct 2. The other is used as a radiator wind, and is sucked from the air suction surface of the radiator R attached to the side wall 2a of the partition wall as described above, and is used for heat exchange of the radiator R, and then rearward via the radiator fan RF. And used as cooling air in the engine room ER.

Since the radiator R of the intake air chamber SR is a suction type radiator that sucks air from the intake air chamber SR to the engine room ER, the engine room ER
The high temperature air from the inside of the intake duct 2 does not enter, and as described above, the structure of the heat insulating material 6 and the like prevents the intake duct 2 from being heated by the air from the engine room ER. Since the fuel tank FOT for filling the fuel that does not heat up so much is disposed in the engine, it has the effect of preventing the temperature of the intake air chamber SR from rising. On the other hand, since the fuel tank FOT side is also close to the low temperature intake duct 2, the fuel is kept at normal temperature or low temperature without increasing in temperature. Therefore, when the engine room ER is provided, a defective component that does not provide a cooling effect is provided in the intake air chamber SR.

First, a hydraulic oil cooler HOC for cooling the hydraulic oil of the hydraulic working device in the case where the engine driven hydraulic working device is provided as a kind of the engine driven working device is provided. In addition, above that is a radiator R
The air introduced into the engine is cooled to improve the heat exchange rate of the radiator R, and the engine cooling air sent through the radiator fan RF is cooled to enhance the cooling effect. Exchanger) I
C is provided. The hydraulic oil cooler HOC and the intercooler IC are arranged so as to face the air intake surface of the radiator R attached to the partition wall side plate 2a.
The entire amount of air taken into the radiator R directly passes through these parts, and both coolers HOC.I
The cooling effect of C is enhanced. By arranging these vertically, the installation space does not expand in the horizontal direction, which contributes to downsizing of the intake duct 2.

Then, as shown in FIGS. 2 to 6, in the intake duct 2, the partition wall 2b is provided on the left side of the intake air chamber SR in FIG. 3 and FIG. C
R is formed, and the control panel CP is arranged in this. The control panel CP has a microcomputer and the like, and it is further required that the ambient temperature is low. However, in the intake duct 2, the air in the control panel CR adjacent to the intake air chamber SR is As described above, since the high temperature is avoided, it is an optimum installation space.

In the control panel chamber CR, the intake side surface of the intake duct 2 and the intake side surface 1a of the bonnet 1 are cut out, and the control panel door CD is arranged at the cutout portion of the intake side surface 1a of the bonnet 1. is doing. The control panel C
The operation portion of P is oriented toward the control panel door CD, that is, toward the intake side surface, and is slidably mounted on the left and right slide rails 7 shown in FIG. 4 and FIG. It can be pulled out to
When the control panel door CD is opened, the control panel C is moved horizontally.
It is possible to slide P to take it out and perform maintenance work on the inside of the control panel CP from the side. Further, as shown in FIGS. 5 and 6, the intake side surface 1 of the bonnet 1
Inside a side edge part of the control panel door CD in a,
L-shaped receiving plates 8 and 8 in plan view are extended and rubber plates 8a and 8a are attached to the receiving plates 8 and 8. When the control panel CP is stored, as shown in FIG. The side plate of the operation portion of the control panel CP is stored in a state of being pressed against the rubber plates 8a.

Further, as shown in FIGS. 3 to 5, on the intake side surface 1a of the bonnet 1, below the control panel CP in the control panel chamber CR is a drawer portion of the fuel filler port 10 of the fuel tank FOT. A refueling door 9 is disposed below the control panel door CD on the intake side surface of the bonnet 1. The fuel tank FOT is installed in the space below the intake duct 2 and the radiator R as described above. The radiator R does not need to have a large vertical length, and the installation space for the hydraulic oil cooler HOC and the intercooler IC, which are arranged to face the radiator R, need not be so long vertically. From this, nature, radiator R
And an excess space is created above or below both coolers HOC / IC. In this embodiment, a surplus space is arranged below them to secure a space for disposing the fuel tank FTO. Therefore, unlike the conventional technique, a disposing space dedicated to the fuel tank is not provided horizontally, and the bonnet 1 is provided. This contributes to downsizing of the entire device covered by the coating.

Since the control panel CP is arranged on the left side of the bonnet 1 in FIG. 4, the hydraulic oil cooler HOC and the intercooler IC, and the radiator R arranged facing them are shown in FIG. Unevenly distributed on the right side. Therefore, in the engine room ER, in order to face the radiator fan RF arranged on the lower side of the radiator R, the entire engine-driven working apparatus including the engine E is
It is unevenly distributed on the right side in FIG. Therefore, in the engine room ER, as shown in FIG. 2, a large space is created on one side of the engine-driven working device, that is, on the side where the control panel CP is arranged, and the cooling air from the radiator fan RF is used in this space. A large amount of air is blown toward. Providing a space in which a large amount of air is blown in this way makes it possible to secure a sufficient amount of cooling air and to expect a cooling effect in the engine room ER and the engine-driven working apparatus as a whole. Further, in this space, the battery B is arranged as shown in FIG. 2, and the cooling effect of the battery B is obtained. Intake air chamber S formed in the intake duct 2
The structure of R and the control panel room CR has been described above.

Next, the structure of each part in the engine room ER will be described. First, the structure of the engine-driven working device itself will be described. In this embodiment, as shown in FIGS. 1 and 2, an engine-driven hydraulic working device is configured by connecting a tandem pump including hydraulic pumps P1 and P2 in series on the output shaft of the engine E. . A direct coupling member 14 having a structure as shown in FIG. 7 is provided between the output shaft portion of the engine E and the upper hydraulic pump P1 of the tandem pump, and a cup provided in the direct coupling member 14 is provided. Ring 14
The pump shaft PS of the hydraulic pump P1 is internally fitted and fixed to a,
The flywheel FW attached to the output shaft of the engine E is coupled and fitted. Further, a power take-off shaft is projectingly provided on the lower side of the lower side hydraulic pump P2 of the tandem pump so that the hydraulic pump OP can be optionally attached.

In this way, the working device (hydraulic pumps P1 and P
Since the engine-driven working device in which 2) is directly connected is not provided with a gear box unlike the prior art, a bending moment does not occur, and the entire engine-driven working device may be vibration-proof supported. The vibration support structure is simplified. Further, the space and cost corresponding to the gearbox arrangement are reduced. However, on the other hand, since the working device is arranged in a direct connection in the engine output shaft direction, a twisting moment is likely to be generated at the portion where the working device (hydraulic pump P1) is mounted on the output shaft.
In order to suppress this, it is necessary to increase the rigidity of the integrated structure of the engine E and the working device.

In the present embodiment, in order to realize this improvement in rigidity at a low cost without increasing the number of parts, the engine E
Attach the mounting legs 12 of the work device (hydraulic pump P1.
The hydraulic pumps P1 and P2 are directly attached to the extending portions of the mounting leg members 12 and 12 by extending in the P2) direction. With such a structure, the engine E and the hydraulic pump P1
P2 and P2 can be made into a highly rigid integral structure. Also,
The mounting leg members 12, 12 are attached to the engine E at a mounting portion.
It is vibration-isolated and supported by the common base 3 (upper part 3a) via the vibration-damping rubbers 13a, 13a, and is also extended by the vibration-proof rubbers 13b, 13b at the extended portion for mounting the working device. 3 is vibration-proof supported. In other words, in the conventional structure in which the engine and the working device are arranged in parallel, it is necessary to independently support the engine and the working device in a vibration-proof manner, and the number of places where the vibration-proof rubber is arranged is increased. In the present embodiment, the engine E and the working device are attached to the left and right mounting legs 12 respectively.
・ Because it is integrated at 12, and twisting is less likely to occur, there are only four places in total, two places in front and two places in the rear, that is, the vibration-proof support structure is simplified. It is.

As described above, since both the mounting portion of the engine E and the working device mounting portion are integrally vibration-isolated and supported by the mounting leg members 12 and 12, the engine E and the working device are connected in advance. Attach the engine E first without mounting the legs 1
Installed on 2/12, and then working device (hydraulic pump P
The vibration-proof effect does not change even if 1 / P2) is attached. Therefore, replacement work of only the working device, for example, the hydraulic pump P1
・ Replacement work such as changing from P2 to a generator becomes easy.

When the hydraulic pumps P1 and P2 are used as working devices, a location for the hydraulic oil tank is required. In this embodiment, however, in the engine room ER,
A hydraulic oil tank mount 15 is provided, and a hydraulic oil tank HOT is mounted on it. The leg portions 15a, 15a ... Of the hydraulic oil tank mount 15 are formed on both side frames 4 ,.
4, the hydraulic oil tank stand 15 is erected in a state of being installed on the hydraulic pumps P1 and P2 of the working device. The mounting portion of the hydraulic oil tank HOT of the hydraulic oil tank mount 15 is at a low position because the hydraulic pumps P1 and P2 are not so high upward, and therefore, between the portion and the ceiling portion of the bonnet 1, It is possible to secure a sufficient location for the hydraulic oil tank HOT.
It is not necessary to expand the space in the horizontal direction in order to secure the installation space, which contributes to downsizing of the bonnet 1.

Next, the intake and exhaust structures will be described. As shown in FIGS. 1 and 2, the intake pipe SP extending from the air cleaner AC has its inlet introduced into the intake air chamber SR in the intake duct 2 as described above, and the inner surface of the bonnet 1 and the intake duct 2 are introduced. Due to the heat insulating structure between the outer surface, the fuel tank FOT, the hydraulic oil cooler HOC, and the intercooler IC, the air that is sufficiently cooled in the intake air chamber SR, which is the air cooling chamber, is supplied. Because it is introduced as intake air, inside the engine (cylinder, etc.)
The durability of can be improved.

Next, the exhaust structure will be described. As shown in FIGS. 1 and 3, an exhaust pipe EP1 extends from an exhaust flange EF above the engine E, and an exhaust muffler EM is arranged above the engine E. The exhaust muffler EM is disposed at the lower part of the engine E, at the upper and both sides by the ceiling surface and both side surfaces of the bonnet 1, and at the front and rear sides of the partition wall side surface 2a of the intake duct 2 and the hydraulic oil tank HOT. Since it is surrounded by one side, a space for an exhaust duct is secured, and it is not necessary to provide an exhaust duct with another structure, which contributes to downsizing and simplification of the structure. An exhaust pipe EP2 extends from the exhaust muffler EM toward an exhaust port formed in the ceiling of the bonnet 1.

Finally, the leakage and scattering prevention structure of the flange portion will be described with reference to FIGS. The flanges in various pipes for water distribution or oil feeding have a problem of fluid scattering due to leakage, but conventionally, a metal cover is fixed to the flange by bolting together. The metal cover is divided into two parts, and further, it is necessary to manufacture each of the flanges in the same size, and the cost is high.
Moreover, the number of assembling steps per flange is also large.

In this embodiment, the protective cover 16 is attached to the flange portion to prevent fluid leakage and scattering. The material of the protective cover 16 is glass fiber coated with silicon coating which is fireproof, heatproof, flameproof and waterproof. First, the protective cover 16 is folded in two as shown in FIG. 10A, and the folded portions at both ends are sewn in a tubular shape as shown in FIG. ),
The wires 17 and 17 are passed through the cylinder formed in this way to obtain the structure shown in FIG.

The process of coating the flange F with the protective cover 16 will be described with reference to FIG. At first, like (a),
The protective cover 16 is applied to the outer peripheral curved surface of the flange F and wound. Next, as shown in (b), the wires 17
When is pulled strongly outward, both ends are squeezed and wound around the flat portion of the flange F. Thus, the protective cover 16
Is evenly wound around the outer peripheral curved surface and the flat surface of the flange F, and when both ends are sufficiently squeezed, the externally exposed portions of both the wires 17 are twisted and tightly bound.

As described above, the protective cover 16 is low in cost in terms of material, and even if the size of the flange F varies to some extent, it can be wrapped around the flange F to fit the size of the flange F. And the duality is effective. Since it is not necessary to fasten bolts and the like, and the number of assembling steps is reduced, it is possible to attach a large number of protective covers 14 to the flange in a short time.

[0039]

Since the present invention is configured as described above, it has the following effects. That is, in the structure in which the engine-driven working device is provided in the box body and the intake air chamber is formed by the intake duct that is isolated from the engine room, the intake air chamber is separated from the engine room by using the configuration according to claim 1. Since the air is isolated and the air in the intake air chamber is further introduced into the engine room by the suction radiator, the hot air that has passed through the engine room does not enter the intake air chamber. In such a structure, disposing the heat exchanger in the intake air chamber improves the heat exchange ratio as compared with disposing it in the engine room where the temperature rises.

Similarly, in the structure in which the engine-driven working device is provided in the box body and the intake duct for isolating from the engine room is provided, the ambient temperature is required to be low by constructing as in claim 2. A control panel is placed in the intake duct to improve temperature conditions and ensure good engine control.

According to the first aspect of the present invention, with the configuration of the third aspect, the total amount of air in the intake air chamber taken into the radiator hits the air-cooling heat exchanger and the hydraulic oil cooler. The cooling effect is improved, and as a result, the cooling effect of the radiator and the cooling effect of the engine room cooling air sent from the radiator R are improved by lowering the temperature of the air introduced into the radiator, and the cooling effect of the hydraulic oil is also improved.

According to the fourth aspect of the present invention, the temperature of the fuel in the fuel tank is prevented from increasing in temperature, and the air cooling chamber thus formed is hermetically sealed so that the air in the engine room does not enter the intake air. The air in the air cooling chamber, which is used as a radiator intake air or as a radiator intake air, can be kept at a low temperature, and a good cooling effect can be obtained in all directions.

According to the fifth aspect, the air cooling heat exchanger, the hydraulic oil cooler, and the space below the mounting portion of the radiator are secured as they are as the fuel tank installation space, so that the fuel tank is installed separately. There is no need to expand the space horizontally, contributing to the compactness of the entire box that houses the engine-driven work equipment.

According to the sixth aspect of the invention, the hydraulic oil tank is disposed in the surplus space above the hydraulic working device, and there is no need to horizontally expand the space for disposing the hydraulic oil tank separately. Contributes to the compactness of the entire box that houses the drive-type work device.

By constructing as described in claim 7, it is not necessary to separately provide an exhaust duct, which contributes to downsizing of the entire box body.

According to the eighth aspect of the present invention, the engine and the working device are integrated with each other, and the rigidity of the portion directly connected to the engine of the working device is improved due to the connection through the leg members. The influence on is reduced. Further, as compared with the structure in which the work devices are arranged in parallel with the engine via the gearbox, the work devices are arranged in series on the engine output shaft, so that a gearbox with a complicated structure is not provided. This contributes to compactness and cost reduction by reducing the installation space.

If the working device is attached to the extended portion of the leg member, the work unit is attached to the engine in an integrated structure. Therefore, first, the engine alone is attached to the leg member, and then,
It becomes possible to optionally assemble a working device such as a generator or a hydraulic pump according to the application.

Further, according to the ninth aspect of the present invention, if the extended portion of the leg member is vibration-isolated and supported, the integrated engine and the entire working device can be vibration-isolated and supported.
Bending moment on the engine output shaft, which had to be considered by independently supporting the engine and the work device in vibration isolation support when the work device and the engine were installed in parallel as in the past. Since it is not necessary to consider suppression of the vibration, etc., the vibration-damping support structure is a very simple structure and has a sufficient vibration-proof effect.

[Brief description of drawings]

FIG. 1 is an internal side view of a box-embedded engine-driven working device.

FIG. 2 is likewise an internal plan view.

FIG. 3 is a front view of the bonnet 1 as viewed from the intake side surface 1a side.

FIG. 4 is an internal front view of the intake duct 2.

FIG. 5 is a side view of an intake duct 2 portion showing an arrangement structure of a control panel CP and a fuel tank FOT.

FIG. 6 is an internal plan view of a control panel room CR.

7 is an internal side view of the direct connection member 14. FIG.

FIG. 8: Flange F of the protective cover 16 for preventing leakage and scattering
It is a perspective view which shows the attachment method to this.

9 is a plan view of the protective cover 16. FIG.

FIG. 10 is a side sectional view showing the sewing of the protective cover 16 and the attachment of the wire 17;

FIG. 11 is an internal perspective view of a conventional engine-driven working apparatus with a built-in box body.

[Explanation of symbols] E engine P1 ・ P2 hydraulic pump R radiator RF radiator fan HOT hydraulic oil tank HOT HOC hydraulic oil cooler FOT fuel tank IC intercooler SP intake pipe EP1 ・ EP2 Exhaust pipe EM muffler ER engine room SR intake air chamber CR control panel room 1 bonnet 1a Intake side 2 intake duct 2a side wall 2b partition 3 common base 6 insulation 12 Mounting legs 13a ・ 13b Anti-vibration rubber 14 Direct connection member 15 Hydraulic oil tank stand

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ identification code FI F02B 63/00 F02B 63/00 F 67/00 67/00 D (58) Fields investigated (Int.Cl. ⁷ , DB name) F02B 63/00 F02B 63/06 F02B 67/00 F02B 77/13 F01P 5/06 F16M 3/00 F16M 5/00

Claims (9)

(57) [Claims] 1. An engine-driven working device in a box.
Intake duct 2 isolated from engine room ER to be installed
Is internally provided, and an intake air chamber SR is formed inside the
From the air intake chamber SR through the suction radiator R
In the structure that introduces cooling air into the gin room ER,
On the air intake surface of the radiator R in the air intake chamber SR,
An engine-driven working device having a heat exchanger other than the rotor R installed therein . 2. An engine-driven working device according to claim 1.
At the control panel CP of the engine-driven working device
Is disposed in the intake duct 2, and its operating portion is
An engine-driven working device characterized by being directed to the intake side . 3. The engine-driven working device according to claim 1.
In the intake air chamber SR, the radiator R is empty.
Heat for cooling the supply air of the engine E so that it covers the entire air intake surface.
Intercooler IC, which is a exchanger, and work equipment
An engine-driven working device having a hydraulic oil cooler HOC installed therein . 4. The engine-driven working device according to claim 3.
In the intercooler IC and hydraulic oil cooler
An engine-driven working device characterized in that a fuel tank FOT is arranged below the HOC . 5. The engine-driven working device according to claim 4.
At the fuel tank FOT,
Controller IC, hydraulic oil cooler HOC, and radiator R
An engine-driven working device characterized by being provided with. 6. The engine-driven working device according to claim 1.
In the above, above the hydraulic working device directly connected to the engine,
An engine-driven working device having a hydraulic oil tank HOT . 7. The engine-driven working device according to claim 6.
At the inner wall of the box and the hydraulic oil tank HOT
The engine-driven working device is characterized in that the portion to be exposed is an exhaust duct . 8. The engine-driven working device according to claim 1.
In, extending the mounting leg material 12 for mounting the engine,
An engine-driven working device in which a working device is attached to an extending portion of the mounting leg member 12. 9. The engine-driven working device according to claim 8.
2. An engine-driven work device according to claim 1, wherein the extended portion of the mounting leg member 12 to which the engine-driven work device is attached is vibration-isolated and supported.