JPH0725221U - Construction machinery - Google Patents

Abstract

(57) [Summary] [Purpose] To enable efficient cooling of an engine or the like installed in the machine room of a construction machine for a long period of time. [Structure] Around the radiator 13, elastic partition plates 25, 25 are fastened to the outer plate portion 6A or the inner plate portion 6C of the building cover 6 and fastened. Further, an elastic partition plate 23 is fastened to the upper plate portion 6B of the building cover 6 at the upper portion of the radiator 13. The elastic partition plates 25 and 33 are in contact with the upper surface or the side surface of the radiator 13 and curved in a concave curve with respect to the engine side chamber 19, thereby allowing the air in the inflow side chamber 18 to flow toward the engine side chamber 19. , Blocking the reverse flow.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to a construction machine capable of efficiently cooling an engine or the like provided in a machine room for a long period of time.

[0002]

[Prior art]

 5 to 7 show hydraulic excavators as examples of conventional construction machines.

In the figure, 1 is a lower traveling body, 2 is an upper revolving body mounted on the lower traveling body 1 so as to be rotatable, and the upper revolving body 2 is a machine room 3, a driver's cab 9, The counter weight 10 is generally configured.

Reference numeral 3 denotes a machine room. As shown in FIG. 6, the machine room 3 is provided with a building cover 6 for accommodating the engines 4, 4 and hydraulic pumps 5, 5 therein. Here, the building cover 6 has left and right outer plate portions 6A and 6A and upper plate portions 6B and 6B, and the engine 4 and the hydraulic pump 5 are located inside the building cover 6 on the left side of the machine room 3. ， Mounted on both right sides. Further, inside the building cover 6, inner plate portions 6C, 6C that divide the inside of the machine room 3 into three chambers at the center, left, and right are provided near the center of each engine 4 and extend in the front-rear direction. There is.

Reference numerals 7 and 7 denote air inlets opened at the rear end of the machine room 3, and 8 and 8 denote air outlets opened at the front side of the upper plate portion 6B of the building cover 6, from each inlet 7. The inflowing air cools a radiator 13, an engine 4, and a hydraulic pump 5, which will be described later, and then flows out of the machine room 3 from an outflow port 8.

Reference numeral 9 denotes an operator's cab provided on the left front side of the machine compartment 3, and various operating levers (not shown) are provided in the operator's cab 9.

Reference numeral 10 denotes a counterweight provided in the rear part of the machine room 3, and the counterweight 10 balances the upper revolving structure 2 with respect to a working device 11 provided in the front part of the upper revolving structure 2. It is like this. Further, through holes 12, 12 are formed in the counterweight 10 at positions facing the respective inlets 7 so that external air can flow into the respective inlets 7 through the respective through holes 12, 12. Has become.

Reference numerals 13 and 13 denote radiators provided between the inlets 7 and the engine 4 and provided in the machine room 3. The radiators 13 circulate cooling water with the engine 4. The engine 4 is cooled by this cooling water.

Reference numerals 14 and 14 denote cooling fans provided between the radiator 13 and the engine 4. Each cooling fan 14 is rotationally driven by the engine 4, and the outside air sucked from each inflow port 7 is supplied to the radiator. It is made to circulate around the engine 4 via 13.

Reference numerals 15, 15, ... Denote partition members provided between the upper and left and right sides of the radiator 13 and the building cover 6, and each partition member 15 is made of a flexible sponge-like resin material. In other words, it is attached between the support member 16 protruding from the building cover 6 side and the radiator 13 by using an adhesive as shown in FIG. Each partition member 15 is elastically deformed to fill the gap between the radiator 13 and the building cover 6, thereby defining the inside of the machine room 3 into an air inflow side chamber 18 and an engine side chamber 19.

The hydraulic excavator according to the related art has the above-described configuration. When the engine 4 is in operation, the cooling fan 14 is rotated by the engine 4 so that the outside air is exposed to the through holes 12 of the counterweight 10. Further, it is sucked into the inflow side chamber 18 of the machine room 3 via the air inlet 7. Then, this air flows into the engine side chamber 19 via the radiator 13, cools the engine 4 and the hydraulic pump 5 as they flow around the engine, and is discharged to the outside from each outlet 8. There is.

Here, in the machine room 3, the air pressure becomes higher in the engine side chamber 19 than in the inflow side chamber 18 due to the wind pressure by the cooling fan 14. Therefore, a partition member 15 is provided between each radiator 13 and the building cover 6 so as to close the gap between each radiator 13 and the building cover 6, so that the engine side chamber 19 is temporarily sucked. The trapped air is prevented from flowing back into the inflow side chamber 18.

[0013]

[Problems to be solved by the device]

 By the way, in the above-described conventional hydraulic excavator, since each partition member 15 is formed of the sponge-shaped resin material, the heat resistance of each partition member 15 cannot be improved, and the heat generated from the engine 4 and the radiator 13 cannot be improved. Therefore, each partition member 15 may be damaged early.

Therefore, in the conventional technique, the air having a high temperature in the engine side chamber 19 flows back into the inflow side chamber 18 and is recirculated to the radiator 13 again, so that the cooling efficiency of the engine 4 and the like decreases. There is a problem of doing.

Further, since each partition member 15 is attached to the support member 16 by an adhesive, there is a problem that replacement work is difficult.

On the other hand, as another conventional technique, as shown in FIG. 8, one in which a partition member 15 is attached between a radiator 13 and a support member 16 via an auxiliary member 17 is known.

However, even in this case, the partition member 15 is damaged early and the occurrence of recirculation cannot be prevented for a long period of time.

The present invention has been made in view of the above-mentioned problems of the prior art. The present invention can reliably prevent the occurrence of recirculation, and can efficiently cool an engine or the like provided in a machine room for a long period of time. The purpose is to provide the construction machine.

[0019]

[Means for Solving the Problems]

 The feature of the configuration adopted by the present invention to solve the above-mentioned problems is that it is located between the building cover of the machine room and the radiator, and is located around the radiator to provide an air inlet side chamber and an engine side chamber inside the machine chamber. An elastic partition plate is provided, and each elastic partition plate has a concave curved shape with respect to the engine side chamber so as to allow the air in the inflow side chamber to flow toward the engine side chamber and prevent the flow in the opposite direction. It is formed by bending it.

[0020]

[Action]

 With the above configuration, an elastic material resistant to heat can be used for each elastic partition plate, and the heat resistance of each elastic partition plate can be improved. Then, when the pressure of the engine side chamber rises, each elastic partition plate is strongly pressed by the radiator side in response to it and comes into close contact with the radiator, so that the radiator vibrates against the building cover due to vibration from the engine. Even when it vibrates, the gap between the two can be continuously closed by the elastic partition plates, and it is possible to reliably prevent the air in the engine side chamber from flowing back into the inflow side chamber for a long period of time.

[0021]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. The same components as those of the above-described conventional technique are designated by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numerals 21 and 21 denote lateral partition portions provided on the left and right sides of the radiator 13, and each lateral partition portion 21 is, as shown in FIG. 2, an outer plate portion 6A of the building cover 6. L-shaped metal fittings 22 and 22 fixed to the inner plate portion 6C and extending in the vertical direction, upper and lower support plates 23 and 24, elastic partition plates 25, upper and lower presser plates 26, which will be described later. It is composed of 27 and. Each side partition 21 defines the inside of the machine chamber 3 into an inflow side chamber 18 and an engine side chamber 19 together with an upper partition 32 which will be described later.

Reference numerals 23 and 23 denote upper support plates, and each support plate 23 has a substantially triangular shape so that the upper end side becomes wider toward the upper part of the radiator 13 and the lower end side has a narrow strip shape. It extends downward.

Reference numerals 24 and 24 denote lower support plates. Each of the support plates 24 has a rectangular shape narrower than the lower end side of the support plate 23, and is positioned below the support plate 23 and is L-shaped. It is attached to the metal fitting 22 and extends vertically.

Reference numerals 25 and 25 denote elastic partition plates. The upper ends of the elastic partition plates 25 project inwardly in a substantially triangular shape, and the lower side becomes a rectangular strip shape through the cut portion 25A and extends downward. is doing.

Reference numerals 26 and 26 denote upper holding plates. The holding plate 26 has an upper end projecting inwardly in a substantially triangular shape and a lower side extending in a strip shape, similarly to the supporting plate 23. The holding plate 26 is formed narrower than the supporting plate 23 as a whole.

Reference numeral 27 denotes a lower holding plate, and although the holding plate 27 is formed in a rectangular shape having a narrow width similar to that of the support plate 24, the holding plate 27 as a whole is larger than the support plate 24. It has a narrow width.

Then, as shown in FIG. 2, bolts 28, 28, ... Are inserted into the support plates 23, 24 through the elastic partition plates 25 from above the pressing plates 26, 27, and the nuts 29 are attached to the bolts 28. , 29, ... are fixed to the support plates 23, 24 by fastening them, and the support plates 23, 24 are attached to the L-shaped metal fitting 22 by bolts 30 and nuts 31.

At this time, the elastic partition plate 25 contacts the left and right side surfaces of the radiator 13 as shown in FIG. 3 to allow the air in the inflow side chamber 18 to flow toward the engine side chamber 19, and the reverse direction. In order to prevent the above flow, the engine side chamber 19 is curved in a concave curve.

Reference numeral 32 denotes an upper partition portion provided above the radiator 13 and the side partition portions 21 and 21, and the upper partition portion 32 includes an elastic partition plate 33, L-shaped metal fittings 34 and 35, and a retainer, which will be described later. It is composed of a plate 36 and the like.

Reference numeral 33 denotes an elastic partition plate. The elastic partition plate 33 is formed of an elastic material such as rubber into an elongated rectangular thin plate, and a substantially semicircular cutout portion is formed at the center of the lower end side of the elastic partition plate 33. 33A is formed, and L-shaped notches 33B and 33B are formed on both ends of the elastic partition plate 33.

34, 34 are arranged on both ends of the elastic partition plate 33, L-shaped metal fittings for attaching both ends of the elastic partition plate 33 to the upper plate portion 6 B of the building cover 6, 35 is each L-shaped metal fitting. 34 shows another L-shaped metal fitting disposed between the upper and lower L-shaped metal fittings 35, and the L-shaped metal fitting 35 includes a cap 13A of the radiator 13 and an upper plate portion 6B located above the cap 13A as shown in FIG. A notch portion 35A is formed between the cap holes 6B1 formed in the.

Reference numerals 36, 36, ... Show pressing plates, and by fixing bolts 37 and nuts 38 on the pressing plates 36, the elastic partition plate 33 is fixed on the L-shaped metal fittings 34, 35. It is supposed to do.

The elastic partition plate 33 is fastened to the upper plate portion 6B together with the L-shaped metal fittings 34 and 35 by screws 39, and the elastic partition plate 33 abuts the upper portion of the radiator 13 as shown in FIG. Like each side partition 21, the engine side chamber 19 is curved in a concave curve.

The machine room 3 of the construction machine according to the present embodiment has the above-described configuration, and its basic operation is not significantly different from that of the conventional art.

However, in this embodiment, on the left and right sides of the radiator 13, the outer plate portion 6A of the building cover 6, the inner plate portion 6C, the elastic partition plates 25, 25, the support plates 23, 24, and the holding plates, respectively. 26, 27, etc., and an elastic partition plate 33 is attached to the upper plate portion 6B of the building cover 6 on the radiator 13 via L-shaped metal fittings 34, 35 and a holding plate 36, and each elastic partition plate is attached. Since the plates 25 and 33 are respectively brought into contact with the left and right side surfaces and the upper surface side of the radiator 13 to bend them in a concave curve with respect to the engine side chamber 19, the following operational effects are obtained. Play.

That is, for each elastic partition plate 25, 33, a plate-shaped rubber material that is stronger in heat resistance than the sponge-shaped resin material used in the conventional technique is used, and the heat resistance of each elastic partition plate 25, 33 is improved. Can be improved.

Each elastic partition plate 25, 33 can be formed to have a check valve structure, allowing air to flow from the inflow side chamber 18 toward the engine side chamber 19 and ensuring a reverse flow. Can be stopped.

In this case, in the machine room 3, the air pressure becomes high due to the wind pressure by the cooling fan 14 and the thermal expansion due to the heat generation from the engine 4, etc. The radiator 13 is pressed and comes into close contact with the radiator 13. As a result, even when the radiator 13 or the building cover 6 vibrates due to the vibration of the engine 4 or the like, the gap between the radiator 13 and the building cover 6 can be continuously closed for a long period of time, and the air in the engine side chamber 19 can flow into the inflow side chamber 18 It is possible to prevent the occurrence of recirculation that flows back to the engine, and improve the cooling efficiency of the engine 4 and the like.

Further, each elastic partition plate 25 is made up of support plates 23, 24, pressing plates 26, 27, bolts 28, nuts 29, etc., and elastic partition plate 33 is made up of a pressing plate 36, bolts 37, nuts 38, etc. Since it is attached to the cover 6, the work of replacing the elastic partition plates 25 and 33 can be performed more easily than in the case of using an adhesive or the like as in the prior art.

Although the hydraulic excavator has been described as an example of the construction machine in the above-described embodiment, the present invention is not limited to this, and may be applied to other construction machines such as a wheel loader and a crane. Good.

Further, although the elastic partition plates 25 and 33 are attached to the building cover 6 side and curved in a concave curve with respect to the engine side chamber 19 in the above-described embodiment, the present invention is not limited to this. Instead, for example, the upper, left, or right elastic partition plates may be attached to the radiator 13 side, abutted on the inside of the building cover 6, and curved in a concave curve with respect to the engine side chamber 19.

[0043]

[Effect of device]

 As described in detail above, according to the present invention, an elastic partition plate is provided between the building cover of the machine room and the radiator, which is located around the radiator and defines the machine room into an air inlet side chamber and an engine side chamber. Each of the elastic partition plates is formed in a concave curved shape with respect to the engine side chamber so as to allow the air in the inflow side chamber to flow toward the engine side chamber and prevent the flow in the opposite direction. Therefore, an elastic material resistant to heat can be used for each elastic partition plate, and the heat resistance of each elastic partition plate can be improved. Then, when the pressure in the engine-side chamber rises, each elastic partition plate is strongly pressed by the radiator side in response to it and comes into close contact with the radiator, so that vibration from the engine causes the radiator to cover the building. Even when it vibrates, the gap between the two can be kept closed by the elastic partition plate, and recirculation in which the air in the engine side chamber flows back into the inflow side chamber can be reliably prevented for a long period of time. At the same time, it is possible to efficiently cool the engine etc. provided in the machine room for a long period of time.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part showing a machine room of a construction machine according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a building cover, a radiator, an elastic partition plate and the like.

FIG. 3 is a perspective view showing an assembled state of a building cover, a radiator, an elastic partition plate and the like.

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is an overall view showing a hydraulic excavator according to a conventional technique.

6 is a top view showing a machine room, a driver's cab, a counterweight and the like in FIG.

FIG. 7 is an enlarged view of main parts showing a building cover, a radiator, a partition member, and the like of the related art.

FIG. 8 is an enlarged view of a main part similar to FIG. 7 showing another conventional technique.

[Explanation of symbols]

 3 Machine room 4 Engine 6 Building cover 7 Inlet 13 Radiator 14 Cooling fan 18 Inflow side chamber 19 Engine side chamber 22, 34, 35 L-shaped metal fittings 23, 24 Support plate 25, 33 Elastic partition plate 26, 27, 36 Holding plate

Claims (1)

[Scope of utility model registration request] 1. An engine, a machine room provided with a building cover for accommodating the engine therein, an air inlet opening to one side of the machine room, and a space between the engine inlet and the engine. A radiator provided in the machine room located at,
In a construction machine equipped with a cooling fan that is driven to rotate by the engine and that causes air sucked from the inflow port to flow around the engine in the machine room, between the building cover and the radiator of the machine room, An elastic partition plate is provided around the radiator to define an air inflow side chamber and an engine side chamber inside the machine chamber, and each elastic partition plate allows the air in the inflow side chamber to flow toward the engine side chamber. The construction machine is formed by curving in a concave curve with respect to the engine side chamber so as to prevent the flow in the opposite direction.