JP2022133046A - Sound insulation box of engine driving type working machine - Google Patents

Abstract

To improve attachability and waterproofness of a component attachment plate which covers a base in an exhaust chamber.SOLUTION: Lengths l of a first side 40a and a second side 40b, disposed in a width direction of a base 10, of sides 40a to 40d of a component attachment plate 40, which closes an upper opening of the base 10 at a formation position of an exhaust chamber 30b and has a rectangular shape in a plan view, are formed longer than a distance Win between inner surfaces of two side walls 12 forming a longitudinal direction of the base 10. The component attachment plate 40 is attached to the base 10 in a state that a bottom surface of the component attachment plate 40 is placed on upper end edges of the side walls 13a, 13a as seen in the longitudinal direction of the base 10 and an upper end edge of one side wall 13b as seen in the width direction.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a soundproof box for an engine-driven work machine such as a compressor or a generator, and more particularly, to an engine-driven work machine characterized by the structure of a base on which components of the soundproof box are mounted. Regarding the soundproof box of the machine.

Engine-driven work equipment such as compressors and generators are usually designed to prevent noise during operation from leaking outside the machine, and in consideration of the convenience of transportation and installation, the engine and work equipment are placed in a soundproof box. It is configured as a soundproof working machine in which components such as a main body are housed and packaged.

Configuration examples of the soundproof box 1 of such a soundproof work machine are shown in FIGS. 7 to 9. FIG.

The soundproof box 1 shown in FIGS. 7 to 9 includes a rectangular base 10 in plan view on which components of an engine-driven work machine such as an engine 50 and a work machine body (generator body in the illustrated example) 70 are placed. , and a soundproof case 30 covering the base 10 on which the components are mounted.

As an example, the base 10 is formed by connecting four channel members 11 having a U-shaped cross section by welding or other methods so as to form a rectangular frame when viewed from above. A bracket for mounting and fixing the lower edge of the soundproof case 30 by means of the flange 11a of the channel material 11 protruding in the outer peripheral direction from the upper edge of the base 10 while forming the web portion 11 with the side wall 13 of the base 10 21 is formed.

On the other hand, the soundproof case 30 described above is a box-shaped case consisting of a front panel 31, a rear panel 32, a side panel 33, and a top panel 34. In the example shown in FIG. A window 35 is provided and a door 36 for opening and closing the window 35 is provided so that maintenance, inspection, etc. of the equipment housed inside can be performed.

In the soundproof box 1 of such an engine-driven work machine, the base 10 is provided to prevent leakage of fuel, lubricating oil, etc. from the housing equipment such as the engine 50 and the work machine main body 70 to the outside of the machine. There have also been proposals that have a function as an oil dike.

As an example, in the soundproof box described in Patent Document 1 described later, a box-shaped oil storage tank 17 that opens upward is accommodated in the base 10 (see FIG. 8), and leaked oil is stored in this oil storage tank 17 The base 10 is provided with the function of an oil barrier by making it possible to store the oil in the tank.

Thus, in the soundproof box 1 having the base 10 functioning as an oil barrier, if rainwater accumulates in the oil storage tank 17, the accumulated rainwater mixes with the leaked oil in the oil storage tank 17. Since the rainwater becomes contaminated and cannot be treated as it is, disposal costs for disposing of the collected rainwater are incurred.

In addition, if rainwater accumulates in the oil storage tank 17, the oil storage tank 17 does not have the capacity to receive the leaked oil when leakage of fuel, lubricating oil, etc. occurs, and the leaked oil overflows from the oil storage tank 17. There is also a risk of polluting the environment.

Therefore, in the soundproof box 1 having the oil storage tank 17 and having the base 10 function as an oil barrier, it is necessary to adopt a structure that prevents rainwater from entering the oil storage tank 17. becomes.

Here, as shown in FIG. 8, the soundproof box 1 of the engine-driven work machine is divided into two chambers in the longitudinal direction of the soundproof box 1 by a vertically erected partition wall 37 in the space inside the soundproof cover 30 . One of these chambers is an engine chamber 30a that accommodates the engine 50 and the work machine body (generator body) 70, and the other chamber is an exhaust port provided in the top panel 34. 38 (see FIG. 7) is an exhaust chamber 30b that opens to the outside of the machine.

A communication port (not shown) provided in the central portion of the partition wall 37 described above communicates the engine chamber 30a and the exhaust chamber 30b, and the radiator of the engine 50 and the engine face this communication port. In the case of a supercharger, a heat exchanger 51 consisting of an intercooler of the supercharger is arranged, and a cooling fan 53 for introducing cooling air to the heat exchanger 51 is provided. The cooling air is generated from the engine room 30a toward the exhaust air chamber 30b, and the cooling air after heat exchange is introduced into the exhaust air chamber 30b. It is configured so that it can be discharged out of the machine.

When the engine-driven work machine is used outdoors due to the configuration of the package type engine-driven work machine, rainwater enters the exhaust chamber 30b through the air discharge port 38 provided in the top panel 34. As shown in FIG.

Therefore, as described above, in the soundproof box 1 in which the base 10 has the function of an oil barrier, the opening on the upper surface of the base 10 at the formation position of the exhaust chamber 30b is closed with the part mounting plate 140, and the exhaust port 38 is closed. In addition to preventing the rainwater entering the exhaust chamber 30b from falling into the oil storage tank 17, parts such as the partition wall 37 and the heat exchanger 51 of the engine 50 are mounted on the part mounting plate 140. It is configured so that it can be placed

Such a component mounting plate 140 has two sides (a first side 140a and a second side 140b) arranged in the width direction of the base 10 and a longitudinal side of the base 10 as shown in FIG. The conventional soundproof box 1 has a rectangular shape in plan view defined by two sides (third side 140c and fourth side 140d) arranged in the same direction. The length l of the two sides (first side 140a and second side 140b) of the component mounting plate 140 arranged in the width direction of the base 10 is slightly shorter than the interval W _in between the inner surfaces. In addition, the component mounting plate 140 can be fitted into the side walls 13 (13a, 13b) of the base 10. As shown in FIG.

An upward flange 141 is provided on the first side 140a of the component mounting plate 140 constructed in this way, and a downward flange 145 is provided on the second side 140b. While forming the same length as the second side 140b, an upward flange 141 is formed slightly longer than the first side 140a, and upward flanges 141 are formed from both ends of the first side 140a. end portions 141a and 141b are configured to protrude respectively.

Then, the above-mentioned first side 140a is arranged on the center side of the base 10, and the ends 141a and 141b of the upward flange 141 projecting from both ends of the first side 140a are arranged in the longitudinal direction of the base 10. , and with the downward flange 145 in contact with the inner surface of the side wall 13b in the width direction of the base 10, the upper surface of the component mounting plate 140 A component mounting plate 140 is attached to the base by a method such as welding so as to be flush with the upper surface of the bracket 21 provided on the upper end of the base 13 .

Japanese Patent Application Laid-Open No. 2018-131928

In the above-described conventional component mounting plate 140, although the ends 141a and 141b of the upward flange 141 are engaged with the upper edges of the longitudinal side walls 13a and 13a of the base 10, the first side 140a and the second side 140a is formed slightly shorter than the interval W _in between the inner surfaces of the side walls 13a, 13a in the longitudinal direction of the base 10. Therefore, the part mounting plate 140 can be welded to the base 10. Before being fixed, the component mounting plate 140 will fall into the base 10 as shown in FIG. 10 if it is not supported.

Therefore, when attaching the component mounting plate 140 to the base 10, the upper surface of the component mounting plate 140 and the upper surface of the bracket 21 provided on the upper edge of the side wall 13 of the base 10 should be aligned so that they are at the same height. In this state, it is necessary to temporarily fix the component mounting plate 140 with a jig or the like, and perform welding or the like in this state.

As a result, the mounting operation of the component mounting plate 140 is complicated, and positional deviation is likely to occur during mounting.

Also, when the component mounting plate 140 is partially welded, rainwater that has fallen onto the component mounting plate 140 through the exhaust port 38 is It can drop into the oil storage tank 17 through the gap δ (see FIG. 9B) formed between the side 140c, the fourth side 140d, and the inner surfaces of the side walls 13 (13a, 13b) of the base 10. FIG.

Therefore, in order to prevent rainwater falling on the part mounting plate 140 from falling into the oil storage tank 17, it is necessary to fill this gap δ with a sealing material or the like. It cannot be completed only by welding work, and the number of man-hours for the work increases, and the time required for drying and hardening of the filled sealing material is also required, resulting in a longer work time.

Moreover, in this configuration, if the gap δ is not completely filled due to insufficient filling of the sealing material, there is still a risk that rainwater that has fallen onto the part mounting plate 140 will enter the oil storage tank 17, and that the sealing material will be removed during shipment. Even if the tank is properly filled, if the sealing material peels off or floats over time, rainwater that falls onto the part mounting plate 140 will enter the oil storage tank 17 through this portion.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to eliminate the drawbacks of the prior art described above, and while it has a relatively simple structure, it is possible to easily perform the mounting operation of the above-described component mounting plate, and at the same time, the sealing material To provide a soundproof box for an engine-driven working machine, which has a structure in which rainwater falling on a part mounting plate is difficult to enter into an oil storage tank even when the oil is not filled.

Means for solving the problems are described below together with the symbols used in the mode for carrying out the invention. This code is for clarifying the correspondence between the description of the claims and the description of the mode for carrying out the invention, and needless to say, it is used restrictively to interpret the technical scope of the present invention. It is not something that can be done.

Also, in this specification, terms such as "first" and "second" are used only to distinguish members and elements, and these terms mean as ordinal numbers that define rank and order. does not have

In order to achieve the above object, the soundproof box 1 of the engine-driven work machine of the present invention is composed of:
An engine 50 and a work machine main body 70 driven by the engine 50 are mounted on the base 10, which is rectangular in plan view and has a function as an oil barrier, and a soundproof case covering the base 10. 30, the space inside the soundproof case 30 is divided into two chambers by a partition wall 37 erected in the vertical direction, and one of the chambers is an engine chamber 30a in which the engine 50 and the working machine main body 70 are accommodated. In addition, in the soundproof box 1 of the engine-driven work machine, the other chamber is the exhaust chamber 30b opened to the outside of the machine through the exhaust port 38,
A part mounting plate 40, which is rectangular in plan view, is provided to close the upper opening of the base 10 at the position where the exhaust chamber 30b is formed,
Of the sides 40a to 40d of the component mounting plate 40, the length l of the first side 40a and the second side 40b arranged in the width direction of the base 10 is defined by the longitudinal direction of the base 10. formed longer than the interval W _in between the inner surfaces of the two side walls 13,
With the bottom surface of the component mounting plate 40 placed on the upper edges of the side walls 13a, 13a in the longitudinal direction of the base 10 and the upper edge of one side wall 13b in the width direction, the component mounting plate 40 is mounted. It is characterized by being attached to the base 10 (Claim 1).

on the base 10,
A plate-like bracket 21 is provided on which the lower edge of the soundproof case 30 is placed, protruding horizontally from the upper outer surface of each of the side walls 13a, 13a in the longitudinal direction of the base 10, and
Except for the mounting position of the component mounting plate 40, a water stop plate 22 is provided that protrudes upward from the inner end of each bracket 21,
An upward flange 41 is provided on the first side 40a of the component mounting plate 40, and the component mounting plate 40 is mounted so that the first side 40a is arranged on the center side of the base 10, The ends 22a, 22a of the respective water stop plates 22, 22 may be connected by the upward flange 41 (Claim 2).

At least two sides forming the longitudinal direction of the base 10 are formed by channel members 11 having a U-shaped cross section, and the base 10 is assembled so that the flanges 11a and 11b of each channel member 11 are arranged vertically. , the web 11c of each channel material 11 is used as the longitudinal side wall 13a of the base 10,
The bracket 21 forms the flange 11a of the channel material 11 projecting from the upper end of the longitudinal side wall 13a of the base 10,
The water stop plate 22 may be attached to the upper end of the side wall 13a in the longitudinal direction of the base 10 or the upper surface of the bracket 21 (Claim 3: see FIG. 2).

Alternatively, instead of the above configuration, at least two sides forming the longitudinal direction of the base 10 are formed by angle members 12, 12 having an L-shaped cross section, and one piece 12a of each angle member 12, 12 is vertically Assemble the base 10 so that the other piece 12b projects horizontally from the lower end of the one piece 12a,
The bracket 21 is attached at a predetermined position lower than the upper edge of the one piece 12a of the angle member 12,
Of the one piece 12a of the angle member 12, the portion located above the mounting position of the bracket 21 forms the water stop plate 22, and the other portion forms the side wall 13a in the longitudinal direction of the base 10. (Claim 4: see FIG. 3).

The bracket 21 is provided over the entire length of the upper end of the longitudinal side wall 13a of the base 10,
The component mounting plate 40 may be stacked on the bracket 21 provided on the base 10 (claim 5: see FIG. 1).

In this way, in the configuration in which the component mounting plate 40 is stacked on the bracket 21, in the overlapping portion of the bracket 21 and the component mounting plate 40, both the bracket 21 and the component mounting plate 40 correspond to the corresponding positions. may be provided with through holes 61 and 62 for positioning (Claim 6: see FIG. 1).

The bracket 21 may also be provided on the upper end of the side wall 13a of the base 10 in the longitudinal direction excluding the mounting position of the component mounting plate 40. In this case, the side wall 13 of the base 10 at this portion (13a, 13b) are formed slightly lower than the other portions by, for example, the plate thickness of the component mounting plate 40,
When attaching to the base 10, the first side 40a of the component mounting plate 40 is brought into contact with the forming end 21a of the bracket 21 on the side of the component mounting plate 40, and the longitudinal direction of the base 10 is adjusted. The component mounting plate 40 is formed so that the third side 40c and the fourth side 40d of the component mounting plate 40 arranged in the direction are arranged on the extension of the edge of the bracket 21. (Claim 7: see FIG. 4).

In this case, the upward flange 41 is provided on the central side of the base 10 from the first side 40a of the component mounting plate 40 so as to protrude by, for example, the bending R dimension γ, and the base 10 is formed longer than the interval W _out between the outer surfaces of the longitudinal side walls 13a, 13a [see FIG. 1(B)],
The forming end 21a of each of the brackets 21 may be provided with a notch 23 that fits with the end 41a of the upward flange 41 (claim 8: see FIG. 5).

Further, the bracket 21 is provided over the entire length of the upper end of the longitudinal side wall 13a of the base 10,
An upward flange 42 is further provided on each of the third side 40c and the fourth side 40d arranged in the longitudinal direction of the base 10 among the sides 40a to 40d of the component mounting plate 40,
At the mounting position of the component mounting plate 40, one side of each bracket 21 on the side wall 13a side is provided with a notch 24 with a predetermined width, and the side wall 13 (13a, 13b) of the base 10 at that position is cut into other portions. Formed slightly lower than (for example, the thickness of the component mounting plate 40),
The lower ends of the upward flanges 42 provided on the third side 40c and the fourth side 40d of the component mounting plate 40 may be fitted into the notch 24 (Claim 9: See Figure 6).

Due to the configuration of the present invention described above, the soundproof box 1 of the engine-driven working machine of the present invention has the following remarkable effects.

The length l of the first side 40a and the second side 40b of the component mounting plate 40 arranged in the width direction of the base 10 is defined as the distance between the inner surfaces of the two side walls 13a forming the longitudinal direction of the base 10. The bottom surface of the component mounting plate 40 is placed on the upper edges of the two longitudinal side walls _13a , 13a of the base 10 and one upper edge of the widthwise side wall 13b. Since the component mounting plate 40 is attached to the base 10 in this state, the component mounting plate 40 does not fall into the base 10 without being fixed with a jig or the like. It made my work easier.

In addition, since the component mounting plate 40 is mounted with its bottom surface placed on the upper edge of the side wall 13 (13a, 13b) of the base, the base 10 can be positioned in the exhaust chamber 30b. By completely covering the opening of the parts mounting plate 40, even if the filling of the sealing material, etc. is omitted, it is possible to have a structure in which it is difficult for rainwater falling on the parts mounting plate 40 to enter the oil storage tank 17. did it.

Furthermore, in the configuration in which positioning through holes 61 and 62 and cutouts 23 and 24 are provided for arranging the component mounting plate 40 at a predetermined position on the base 10, the mounting position on the base 10 can be accurately and easily determined. The component mounting plate 40 can be arranged at the center, and the workability in mounting the component mounting plate 40 can be further improved.

FIG. 10 is a perspective view of a main part of a base on which a component mounting plate is attached (Embodiment 1); FIG. 2 is an exploded perspective view of a main part showing a configuration example of a base (a configuration example using a channel material); FIG. 2 is an exploded perspective view of a main part showing a configuration example of a base (a configuration example using angle members). Fig. 10 is a perspective view of a main part of a base (Embodiment 2) to which the component mounting plate is attached; (A) shows the state in which the component mounting plate is removed; The enlarged view of the V arrow part of FIG. 4(A). FIG. 11 is a perspective view of a main part of a base on which a component mounting plate is attached (Embodiment 3); FIG. 2 is a perspective view of a soundproof box of the engine-driven working machine; FIG. 2 is a perspective view of the inside of the soundproof box of the engine-driven working machine housing the components. FIG. 11 is a perspective view (conventional) of a main part of a base on which a component mounting plate is attached, with the component mounting plate removed; Explanatory drawing of the problem of a component mounting plate (conventional).

A soundproof box 1 for an engine-driven work machine according to the present invention will be described below with reference to the accompanying drawings.

The basic configuration of the soundproof box 1 for the engine-driven work machine of the present invention is the same as the structure of the conventional soundproof box 1 described with reference to FIGS. A base 10 having a rectangular frame shape in a plan view on which the equipment is placed, and a soundproof case 30 covering the upper part of the base 10 on which the components are placed are provided.

The base 10 is provided with a function as an oil barrier by a known structure, which is the same as the structure of the soundproof box 1 described as the prior art. The configuration of is not limited to this configuration, but as an example, a configuration that accommodates a box-shaped oil storage tank 17 that opens upward as shown in FIG. 8 can be adopted.

In addition to the configuration in which the oil storage tank 17 is accommodated in the base 10 as described above, the oil storage tank 17 can be installed on the box-shaped oil storage tank 17 that opens upward. Various known configurations can be adopted, such as a configuration in which the bases 10 are placed one on top of the other, and a base plate covering the bottom of the bases 10 to allow the bases 10 themselves to function as an oil storage tank.

Further, the interior of the soundproof case 30 is partitioned into two chambers, an engine compartment 30a and an exhaust chamber 30b, by a partition wall 37 erected vertically. The configuration in which the opening is closed by the component mounting plate is also the same as the configuration of the soundproof box 1 described as the prior art, and the description of the basic structure of the soundproof box 1 common to the prior art will be omitted.

FIG. 1 shows the structure of the mounting portion of the component mounting plate 40 to the base 10 in such a soundproof box 1. As shown in FIG. Plate-shaped brackets 21, 21 protruding horizontally from upper outer surfaces of side walls 13a, 13a forming the longitudinal direction of 10 are provided. is configured as

Water stop plates 22, 22 projecting upward from the inside end portions of the brackets 21, 21 are provided on the upper part of the base 10, except for the mounting position of a component mounting plate 40, which will be described later. The water stop plates 22, 22 prevent the rainwater that has entered through the gap Δ between the upper surface of the bracket 21 and the lower edge of the soundproof case 30 (see FIGS. 7 and 8) from further entering the inside of the machine. making it preventable.

As shown in FIG. 2 as an example, the base 10 having such a bracket 21 and water stop plate 22 has at least two longitudinal sides of the base 10 formed by a channel material 11 having a U-shaped cross section. It can be formed by forming.

In the example shown in FIG. 2, by assembling the base 10 so that the flanges 11a and 11b of the channel material 11 are arranged above and below, the web 11c of the channel material 11 forms the longitudinal side wall 13a of the base 10. In the example shown in FIG. is formed.

The flange 11a of the channel member 11 arranged on the upper side forms a bracket 21 on which the lower edge of the soundproof case 30 is placed. The aforementioned water stop plate 22 protruding upward from the end portion is formed by attaching a metal band plate to the upper surface of the bracket 21 or the upper end of the aforementioned side wall 13a by welding or the like.

Reference numeral 26 in FIG. 2 denotes ribs for reinforcement, and the sides of the ribs 26 are attached to the side walls 13a of the base by means of welding or the like, and the upper ends of the ribs 26 are attached to the bottom surface of the bracket 21 and the lower ends is attached to the upper surface of the flange 11b by welding or the like to reinforce the base 10. As shown in FIG.

In the structure of the base 10 described above with reference to FIG. By using the longitudinal side walls 13a and the brackets 21, the longitudinal side walls 13a and the brackets 21 of the base 10 are integrally formed, and the waterproof plate 22 is attached later.

On the contrary, the waterproof plate 22 may be integrally formed with the longitudinal side wall 13a of the base 10, and the bracket 21 may be attached later.

In this case, as shown in FIG. 3 as an example, at least two sides forming the longitudinal direction of the base 10 are formed by angle members 12 having an L-shaped cross section. The base 10 is assembled so that the other piece 12b protrudes horizontally from the lower end position of the one piece 12a.

Then, a metal plate protruding horizontally from this position is attached by welding or other method to a predetermined position lower than the upper end edge of the one piece 12a of the angle member 12 to form the bracket 21, and the angle member 12 is attached. Of the one piece 12a, the portion located above the mounting position of the bracket 21 (above the upper surface of the bracket 21) forms the water stop plate 22 described above, and the other portion extends in the longitudinal direction of the base 10. It forms a side wall 13a.

In the configuration shown in FIG. 3, as in the case of the base 10 shown in FIG. The height of the one piece 12a of the angle member 12 at the mounting position is formed in advance by the height of the water stop plate 22 lower than the other portions.
3 is the same as the structure of the base 10 described with reference to FIG. 2 in that reference numeral 26 in FIG.

The above-described component mounting plate 40 covering the upper surface of the base 10 configured as described above at the position where the exhaust chamber 30b is formed is located on each side 40a to 40d of the component mounting plate 40 in the width direction of the base 10. The length l of the two sides (the first side 40a and the second side 40b) arranged on the base 10 is longer than the interval W _in between the inner surfaces of the side walls 13a, 13a forming the longitudinal direction of the base 10. When the component mounting plate 40 is placed on the upper surface of the base 10, the bottom surface of the component mounting plate 40 is aligned with the upper edges of the two side walls 13a, 13a forming the longitudinal direction of the base 10 and one of the side walls 13b forming the width direction. It is constructed so that it can be placed on the upper edge of the.

In the embodiment shown in FIG. 1 (Embodiment 1), the bracket 21 is provided over the entire length of the upper ends of the longitudinal side walls 13a, 13a of the base 10, and the first side 40a of the component mounting plate 40 is provided. The length l of the second side 40b is the same as the interval _Wbr between the edges of the brackets 22, 22 provided on the upper ends of the side walls 13a, 13a in the longitudinal direction of the base 10. As shown in FIG.

As a result, when the component mounting plate 40 is placed on the base 10, the component mounting plate 40 is placed on the brackets 21 provided on the upper ends of the side walls 13a, 13a in the longitudinal direction of the base 10. It is configured so that it can be placed

Of the sides 40a to 40d of the component mounting plate 40, the first side 40a arranged on the center side of the base 10 is provided with an upward flange 41, which allows the component to be mounted on the base 10. When the plate 40 is attached, the upward flange 41 connects the ends 22a, 22a of the water stop plates 22, 22 provided on the longitudinal side walls 13a, 13a of the base 10, and the air outlet 38 is formed. Rainwater falling onto the component mounting plate 40 through the flange 41 cannot fall into the oil storage tank 17 provided in the base 10 over the upward flange 41. - 特許庁

In the configuration shown in FIG. 1, the upper end of the side wall 13b in the width direction of the base 10 is not provided with the bracket 21. A bracket 21 similar to that in FIG.

Reference numerals 61 and 62 in FIG. 1(A) denote through holes for positioning. is provided in

In this manner, the bottom surface of the component mounting plate 40 can be placed on the upper edge of the side wall 13 (13a, 13b) of the base 10 or on the bracket 21, so that the component mounting plate 40 can be welded. Thus, even before being attached to the base 10, the component mounting plate 40 can be held at the mounting position on the base 10 without temporary fixing using a jig, thereby facilitating the mounting work of the component mounting plate 40. .

In particular, in the configuration in which the through holes 61 and 62 for positioning are provided as described above, by aligning the through holes 61 and 62, the component mounting plate 40 can be easily aligned to the correct mounting position on the base 10. Thus, the workability of mounting the component mounting plate 40 is further improved.

Moreover, since the component mounting plate 40 is attached to the base 10 as described above, the component mounting plate 40 can be moved from the upper edge of the side wall 13 (13a, 13b) of the base 10 toward the outer periphery like a canopy. Therefore, the rainwater that has fallen on the component mounting plate 40 is directed away from the upper edge of the side wall 13 (13a, 13b) of the base 10 as indicated by the arrow in FIG. 1(B). It is configured to be guided and discharged out of the machine.

As a result, rainwater falling on the component mounting plate 40 is less likely to enter the oil storage tank 17 provided in the base 10 .

As described above, in the mounting structure of the component mounting plate 40 described with reference to FIG. has been described above.

On the other hand, in the mounting portion of the component mounting plate 40 of the embodiment (embodiment 2) shown in FIG. , the height of the side walls 13 (13a, 13b) of this portion is slightly lower than that of other portions, for example, by the plate thickness of the component mounting plate 40. As shown in FIG.

Then, the length l of the first side 40a and the second side 40b of the component mounting plate 40 is set to the distance between the edges of the brackets 21, 21 provided on the upper edges of the side walls 13a, 13a in the longitudinal direction of the base 10. It is formed to have the same length as the interval W _br [see FIG. 1(B)]. 21 is placed on the base 10 in abutment with the forming end 21a, which is the end on the side of the component mounting plate 40, so that the upper surface of the component mounting plate 40 and the bracket 21 are flush with each other. The third side 40 c and the fourth side 40 d of the component mounting plate 40 arranged in the longitudinal direction are configured to be arranged on extension of the edge of the bracket 21 .

In this configuration, at the mounting position of the component mounting plate 40, the lower edge of the soundproof cover 30 is placed on the component mounting plate 40 that protrudes outward from the upper outer surface of the side wall 13 (13a, 13b) of the base 10. configured to

In this way, the first side 40a of the component mounting plate 40 arranged on the central side of the base 10 is abutted against the formed end 21a of the bracket 21 to mount the component mounting plate 40 on the base. As shown in , the upward flange 41 is formed slightly longer than the interval _Wout between the outer surfaces of the longitudinal side walls 13a, 13a of the base 10 [see FIG. It is provided on the center side of the base 10 from the first side 40a of the plate 40 so as to protrude slightly by, for example, the dimension γ of the bending R.

Notches 23 are provided at the corners of the forming end 21a of the bracket 21 on the side of the side wall 13a so as to fit the ends 41a of the upward flange 41 respectively. It is configured so that the component mounting plate 40 can be positioned.

As a positioning structure for the component mounting plate 40, instead of or in addition to the above structure, a notch or projection for positioning is provided in the forming end 21a of the bracket 21, and the notch or projection is fitted. A protrusion or notch may be provided on the first side 40a of the component mounting plate 40. FIG.

In the configuration described above with reference to FIG. 4, the bracket 21 is not provided at the mounting position of the component mounting plate 40, and the formed end 21a of the bracket 21 is located at the corner of the side wall 13a in the longitudinal direction of the base 10. A notch 23 into which the end portion 41b of the upward flange 41 provided on the component mounting plate 40 is fitted is provided in the part so as to enable positioning.

On the other hand, in the embodiment (embodiment 3) shown in FIG. A notch 24 of a predetermined width is provided on one side of the side wall 13a side of each bracket 21, and the height of the side wall 13 (13a, 13b) of the base 10 at the mounting position of the part mounting plate 40 is compared with other portions. Then, it is formed slightly lower, for example, by the plate thickness of the component mounting plate 40 .

The component mounting plate 40 is provided with an upward flange 41 not only on the first side 40a, but also on the third side 40c and the fourth side 40d arranged in the longitudinal direction of the base 10. A flange 42 was provided to connect the three flanges 41 and 42 .

The part mounting plate 40 constructed in this manner is mounted on the base 10 so that the lower ends of the upward flanges 42 provided on the third side 40c and the fourth side 40d are fitted in the notches 24 described above. mounted on the top.

By configuring in this manner, it is possible to position the component mounting plate 40 at an accurate mounting position simply by placing it on a predetermined position on the base 10 .

In addition, due to such a configuration of the component mounting plate 40, the rainwater falling on the component mounting plate 40 is prevented from flowing into the second direction where the upward flanges 41 and 42 are not provided, as indicated by the arrows in FIG. 6(B). 2 side 40b side, the lower ends of the upward flanges 42 and 43 provided on the third side 40c and the fourth side 40d of the component mounting plate 40 and the bracket 21 at the notch 24 portion It is constructed so as not to be able to enter the oil storage tank 17 provided in the base 10 through the gap.

1 soundproof box 10 base 11 channel material 11a, 11b flange (of channel material)
11c web (of channel material)
12 angle 12a piece (of angle)
12b Other piece (of angle material)
13 side wall (of base)
13a longitudinal sidewall 13b transverse sidewall 17 reservoir 21 bracket 21a forming end (of bracket)
22 water stop plate 22a end (of water stop plate)
23, 24 notch 26 rib 30 soundproof case 30a engine compartment 30b exhaust chamber 31 front panel 32 rear panel 33 side panel 34 top panel 35 window 36 door 37 partition wall 38 exhaust port 40 component mounting plate 40a first side (component mounting plate of)
40b second side (of component mounting plate)
40c third side (of component mounting plate)
40d 4th side (of component mounting plate)
41 upward flange (provided on first side)
41a, 41b ends (of upward flange 41)
42 upward flanges (provided on the third and fourth sides)
50 engine 51 heat exchanger 53 cooling fan 61, 62 through-hole 70 work machine main body (generator main body)
140 component mounting plate 140a first side (of component mounting plate)
140b second side (of component mounting plate)
140c third side (of component mounting plate)
140d fourth side (of component mounting plate)
141 upward flange (provided on first side)
141a, 141b end (upward flange)
145 downward flange (provided on the second side)
l the length of the first and second sides of the component mounting plate W _in the distance between the inner surfaces of the longitudinal side walls of the base
W _Interval between the outer surfaces of the side walls in the longitudinal direction of the base W _br Interval between the edges of the bracket provided on the upper edge of the side walls in the longitudinal direction of the base γ Dimension of bending R

Claims (9)

An engine and a work machine body driven by the engine are mounted. The base is rectangular in plan view and has a function as an oil barrier. A soundproof case covers the base. The space inside the case is divided into two chambers by a vertically erected partition wall. In a soundproof box for an engine-driven work machine with an exhaust chamber that is open to the outside of the machine,
A component mounting plate rectangular in plan view is provided to close the upper opening of the base at the position where the exhaust chamber is formed,
Among the sides of the component mounting plate, the length of the first side and the second side arranged in the width direction of the base shall be the distance between the inner surfaces of the two side walls forming the longitudinal direction of the base. formed longer than
The component mounting plate is attached to the base with the bottom surface of the component mounting plate placed on the upper edge of each side wall in the longitudinal direction and the upper edge of one side wall in the width direction of the base. A soundproof box for an engine-driven work machine characterized by: on the base,
A plate-like bracket is provided that protrudes horizontally from the upper outer surface of each longitudinal side wall of the base and supports the lower edge of the soundproof case,
Except for the mounting position of the part mounting plate, a water stop plate is provided that protrudes upward from the machine inner end of each bracket,
An upward flange is provided on the first side of the part mounting plate, and the part mounting plate is mounted so that the first side is arranged on the center side of the base, and the upward flange 2. A soundproof box for an engine-driven work machine according to claim 1, wherein the ends of said water stop plates are connected to each other. At least two sides forming the longitudinal direction of the base are formed by channel materials having a U-shaped cross section, and the base is assembled so that the flanges of each channel material are arranged above and below, and the web of each channel material is the longitudinal side wall of the base, and
forming the bracket with the flange of the channel material projecting from the upper end of the longitudinal side wall of the base;
3. A soundproof box for an engine-driven work machine according to claim 2, wherein said water stop plate is attached to an upper end of a longitudinal side wall of said base or an upper surface of said bracket. At least two sides forming the longitudinal direction of the base are formed by angle members having an L-shaped cross section. As you assemble the platform,
mounting the bracket at a predetermined position lower than the upper edge of the one piece of the angle material;
Of the one piece of the angle member, the portion located above the mounting position of the bracket serves as the water stop plate, and the other portion serves as the side wall in the longitudinal direction of the base. A soundproof box for an engine-driven work machine according to claim 2. The bracket is provided over the entire length of the upper end of the longitudinal side wall of the base,
A soundproof box for an engine-driven work machine according to any one of claims 2 to 4, characterized in that said component mounting plate is superimposed on said bracket provided on said base. 6. The engine-driven work machine according to claim 5, wherein positioning through holes are provided in corresponding positions of both the bracket and the part mounting plate in the overlapping portion of the bracket and the part mounting plate. soundproof box. The bracket is provided at the upper end of the longitudinal side wall of the base excluding the mounting position of the part mounting plate, and the side wall of the base at this position is formed slightly lower than other parts,
When the component mounting plate is attached to the base, the first side of the component mounting plate is abutted against the forming end, which is the end of the bracket on the component mounting plate side, and the components are arranged in the longitudinal direction of the base. 4. Any one of claims 2 to 4, wherein the component mounting plate is formed in a shape in which the third side and the fourth side of the mounting plate are arranged on extensions of the edges of the bracket. A soundproof box for the described engine-driven work machine. The upward flange is provided so as to protrude toward the center of the base from the first side of the component mounting plate, and is formed longer than the space between the outer surfaces of the longitudinal side walls of the base. ，
8. A soundproof box for an engine-driven work machine according to claim 7, wherein said formed end of each of said brackets is provided with a notch for fitting with the end of said upward flange. The bracket is provided over the entire length of the upper end of the longitudinal side wall of the base,
an upward flange is further provided on each of a third side and a fourth side arranged in the longitudinal direction of the base among the sides of the component mounting plate;
At the mounting position of the component mounting plate, a notch of a predetermined width is provided on one side of the side wall of each bracket, and the side wall of the base at that position is formed slightly lower than the other portions,
5. The apparatus according to any one of claims 2 to 4, wherein lower ends of said upward flanges provided on said third side and said fourth side of said component mounting plate are fitted into said cutouts. Soundproof box for engine-driven work equipment.

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