JP2597965Y2 - Construction machinery - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic shovel, 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]

2. Description of the Related Art FIGS. 5 to 7 show a hydraulic shovel as an example of a conventional construction machine.

[0003] In the drawings, reference numeral 1 denotes a lower traveling body, and 2 denotes an upper revolving body which is mounted on the lower traveling body 1 so as to be capable of turning.
The upper revolving superstructure 2 is generally constituted by a machine room 3, an operator's cab 9, and a counterweight 10 described later.

Reference numeral 3 denotes a machine room. As shown in FIG. 6, the machine room 3 has engines 4 and 4 and hydraulic pumps 5 and 5 therein.
A building cover 6 that accommodates the like is provided. here,
The building cover 6 includes left and right outer panels 6A, 6A and an upper panel 6.
B, 6B, and each engine 4 and hydraulic pump 5 are mounted on the left and right sides of the machine room 3 in the building cover 6. Further, inside the building cover 6, near the center of each engine 4, inner plate portions 6C, 6C which partition the inside of the machine room 3 into three rooms, a center, left and right, are provided extending in the front-rear direction. .

[0005] 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 6 B of the building cover 6. 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 through the outflow port 8.

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

Reference numeral 10 denotes a counterweight provided at the rear of the machine room 3. The counterweight 10 balances the upper swing body 2 with respect to a working device 11 provided at the front of the upper swing body 2. It has become. Further, through holes 12 are formed in the counterweight 10 at positions opposed to the inflow ports 7, and external air is supplied to each of the through holes 1.
It flows into each inflow port 7 through 2 and 12.

Reference numerals 13 and 13 denote radiators provided between the inflow ports 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 the cooling water.

Reference numerals 14 and 14 denote a radiator 13 and an engine 4
The cooling fans provided between the cooling fans 1
The engine 4 is driven to rotate by the engine 4, and the external air sucked from each inlet 7 flows around the engine 4 via the radiator 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 of the partition members 15 is made of a flexible sponge-like resin material. 7 using an adhesive between the radiator 13 and the support member 16 protruding from the building cover 6 side.
It is mounted as shown. And each partition member 15
Is filled with a gap between the radiator 13 and the building cover 6 by elastic deformation, so that the inside of the machine room 3 is an air inflow side chamber 1.
8 and an engine side chamber 19.

The conventional hydraulic excavator has the above-described configuration. When the engine 4 is operated, the cooling fan 14 is rotated by the engine 4, so that external air flows through the through holes 12 of the counterweight 10. The air is sucked into the inlet chamber 18 of the machine room 3 through the air inlet 7. Then, this air flows into the engine side chamber 19 through the radiator 13, and the engine 4, the hydraulic pump 5
These are cooled when flowing around, and are discharged from each outlet 8 to the outside.

Here, in the machine room 3, the cooling fan 14
The pressure of the air becomes higher in the engine-side chamber 19 than in the inflow-side chamber 18 due to the wind pressure caused by the airflow. Therefore, the 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, whereby the air is once sucked into the engine side chamber 19. The air is prevented from flowing back into the inflow side chamber 18.

[0013]

In the hydraulic shovel according to the prior art described above, since each partition member 15 is formed of a sponge-like resin material, the heat resistance of each partition member 15 cannot be improved. Each partition member 15 may be damaged early by the heat generated from the engine 4 and the radiator 13.

Therefore, in the prior art, the engine side chamber 19
There is a problem that the high-temperature air flows back into the inflow-side chamber 18 and recirculation is sucked into the radiator 13 again, thereby lowering the cooling efficiency of the engine 4 and the like.

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

On the other hand, as another prior art, an auxiliary member 1 is provided between a radiator 13 and a support member 16 as shown in FIG.
There is also known one in which a partition member 15 is attached via a cover 7.

However, even in this case, the partition member 15 is damaged at an early stage, and the occurrence of recirculation cannot be prevented for a long 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 of the present invention is to provide such a construction machine.

[0019]

To solve the problems above mentioned SUMMARY OF THE INVENTION The present invention includes an engine, yield the engine inside
A machine room provided with a building cover,
Air inlet opening to one side of the engine, the inlet and the engine
And a radiator provided in the machine room between
And is rotationally driven by the engine, and
Circulates air around the engine in the machine room
Cooling fan and the machine room building cover and radiator
And located around the radiator
The machine room is divided into an air inlet side room and an engine side room.
And applied to a construction machine having a plurality of elastic partition plates.
The feature of the configuration employed in the present invention is that
The cutting plate is attached to the building cover side and the radiator side.
A state was formed as a contact portion, wherein the elastic partition plate which is curved concave curve shape the abutment side against <br/> the engine side chamber
The mounting part side is attached to the building cover, and the corresponding contact part is the inflow chamber
Side air is allowed to flow toward the engine compartment,
Abuts the radiator while blocking the flow
It is in the configuration.

[0020]

According to the above construction, 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, contact of each elastic partition plate
When the pressure in the engine-side chamber increases , the portion is pressed strongly by the radiator in response to this, and comes into close contact with the radiator . Therefore , even when the radiator vibrates against the building cover due to the vibration from the engine, the gap between the two can be kept closed by each elastic partition plate, and the air in the engine side chamber is prevented from flowing back to the inflow side chamber for a long time. Can be reliably prevented.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. The same reference numerals are given to the same components as those in the above-described conventional technology, and the description thereof will be omitted.

In the figure, 21 and 21 are on the left of the radiator 13,
The right and left side partitions 21 are shown.
As shown in FIG. 2, the L-shaped bracket 22, which is fixed to the outer plate portion 6A and the inner plate portion 6C of the building cover 6 and extends vertically,
22 and upper and lower support plates 23 and 24, an elastic partition plate 25, and upper and lower holding plates 26 and 27, which will be described later. Each of the side partitions 21 and the upper partition 32, which will be described later, define the inside of the machine room 3 as an inflow side chamber 18 and an engine side chamber 19.

Reference numerals 23, 23 denote upper support plates. Each of the support plates 23 has a substantially triangular shape such that the upper end is wider toward the upper part of the radiator 13, and the lower end is a narrow band. It extends downward.

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

Reference numerals 25, 25 denote elastic partition plates, each of which has an upper end protruding inward in a substantially triangular shape.
The lower side becomes a rectangular band shape through the cut portion 25A, and extends downward. And the elastic partition plate 25 is
-6 side is an attachment part to be attached to the support plates 23, 24, etc.
The radiator 13 side is on the left of the radiator 13,
It is formed as an abutting portion that abuts on both right side surfaces.

Reference numerals 26 and 26 denote upper holding plates. The holding plate 26 has an upper end protruding inward in a substantially triangular shape substantially in the same manner as the support plate 23. The holding plate 26 is formed to be narrower than the supporting plate 23 as a whole.

Reference numeral 27 denotes a lower holding plate.
Is formed in a narrow rectangular shape substantially similar to the support plate 24, but the holding plate 27 is
It is formed narrower than that.

Then, as shown in FIG. 2, each holding plate 26,
27, through the elastic partition plate 25 and bolts 28, 2
8, inserted through ... to the support plates 23, 24 side, the mounting portion of the elastic partition plate 25 by tightening the said bolts 28 nuts 29, 29, ... and is fixed to the support plates 23, 24, the support plate 23 , 24 are L by bolt 30 and nut 31
It is attached to the character fitting 22.

At this time, the contact portions of the elastic partition plate 25 contact the left and right sides of the radiator 13 as shown in FIG. 3 to prevent the air in the inflow side chamber 18 from flowing toward the engine side chamber 19. It is configured to be concavely curved with respect to the engine side chamber 19 so as to allow the flow in the opposite direction.

Numeral 32 denotes a radiator 13 and the side partition 2
An upper partition part provided above the upper and lower parts 21 and 21 is shown. The upper partition part 32 includes an elastic partition plate 33, an L-shaped fitting 34,
35, a holding plate 36 and the like.

Reference numeral 33 denotes an elastic partition plate.
Reference numeral 3 denotes an elongated rectangular thin plate made of an elastic material such as rubber, and a substantially semicircular notch 33A is formed at the center of the lower end of the elastic partition plate 33; Notch portions 33B, 33B in the shape of a letter are formed. So
Then, the elastic partition plate 33 has the L-shaped bracket 3 on the building cover 6 side.
4 is formed as a mounting part to be mounted on the radiator
13 side as an abutting part which abuts on the upper part of the radiator
Is formed.

Reference numerals 34, 34 are disposed at both ends of the elastic partition plate 33, L-shaped fittings for attaching both ends of the elastic partition plate 33 to the upper plate portion 6B of the building cover 6, and 35 are the respective L-shaped fittings. 34 shows another L-shaped fitting disposed between the cap 13A of the radiator 13 and the upper plate portion 6 located above the cap 13A, as shown in FIG.
A gap 35A is formed between the cap holes 6B1 formed in B.

Reference numerals 36, 36,... Denote holding plates, and the elastic partition plate 33 is fixed on the respective L-shaped brackets 34, 35 by tightening bolts 37 and nuts 38 from above each holding plate 36. It has become.

The mounting portion of the elastic partition plate 33 is fastened to the upper plate portion 6B by screws 39 together with the L-shaped brackets 34 and 35 , and the contact portion of the elastic partition plate 33 is connected to the radiator 13
As shown in FIG. 4, each of the side partitions 2
As in the case of 1, the engine side chamber 19 is curved in a concavely curved shape.

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

However, in this embodiment, the outer plate 6A and the inner plate 6C of the building cover 6 are provided on both the left and right sides of the radiator 13.
The mounting portions of the elastic partition plates 25 , 25 are attached to the support plates 23, 24, respectively.
And attached via a respective presser plates 26 and 27 or the like, mounting portion an L-shaped bracket of the elastic partition plate 33 on the upper portion of the radiator 13 to the upper plate section 6B of the housing cover 6 and 35 and the presser plate 36
With attached via like, of each of the elastic partition plates 25, 33
By making the contact portions abut on the left and right side surfaces and the upper surface side of the radiator 13, respectively, the components are curved in a concave curve with respect to the engine side chamber 19.

That is, the elastic partition plates 25 and 33 are made of a plate-like rubber material that is more resistant to heat than the sponge-like resin material used in the prior art, and the heat resistance of each of the elastic partition plates 25 and 33 is improved. Can be done.

Each of the elastic partition plates 25 and 33 can be formed so as to form a check valve structure, which allows air to flow from the inflow side chamber 18 to the engine side chamber 19, and reliably prevents reverse flow. it can.

In this case, the cooling fan 14 in the machine room 3
The pressure of the air increases due to the wind pressure caused by the air and the thermal expansion caused by the heat generated from the engine 4 and the like.
Numeral 33 denotes a radiator 13 by the pressure of the engine side chamber 19.
And come into close contact with each other. As a result, even when the radiator 13 and the building cover 6 vibrate 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 time, and the air in the engine side chamber 19 is filled with the inflow side chamber 18. This prevents the occurrence of recirculation flowing back to the engine, thereby increasing the cooling efficiency of the engine 4 and the like.

Further, each elastic partition plate 25 is provided with a support plate 23,
The elastic partition plate 33 is attached to the building cover 6 by the holding plate 36, the bolt 37, the nut 38 and the like by using the holding plate 24, the holding plates 26 and 27, the bolt 28, the nut 29, and the like. The operation of replacing the respective elastic partition plates 25 and 33 can be easily performed as compared with the case where the elastic partition plates 25 and 33 are used.

In the above embodiment, a hydraulic excavator is described as an example of a construction machine. However, the present invention is not limited to this. For example, a wheel loader or a crane may be used.
It may be applied to other construction machines.

In the above embodiment, each elastic partition plate 2
5 and 33 are attached to the building cover 6 side, and the engine side compartment 19
Although it was described as being curved in a concave curve with respect to
The present invention is not limited to this. For example, the upper or left or right elastic partition plate is attached to the radiator 13 side, and is brought into contact with the inside of the building cover 6 to be curved concavely with respect to the engine side chamber 19. You may.

[0043]

As has been described in detail [devised the effect described above, according to the present invention, each
An elastic partition plate is attached to the building cover side and the radiator
The elastic partitioning plate is formed as a contact portion on the data side.
Shape that is curved side with respect to the engine-side chamber to the concave curve-shaped
Attach the mounting part side to the building cover in the
Allow the air on the entry side to flow toward the engine room.
And hits the radiator in a state where
Since the elastic partition plates are in contact with each other, a heat-resistant elastic material can be used for each elastic partition plate, and the heat resistance of each elastic partition plate can be improved. And the contact part of each elastic partition plate
When the pressure in the engine-side chamber increases, the pressure is more strongly pressed by the radiator side to come into close contact with the radiator . Therefore , even when the radiator vibrates against the building cover due to vibration from the engine, the gap between the two can be continuously closed by the elastic partition plate, and recirculation in which air in the engine side chamber flows back to the inflow side chamber. This can be reliably prevented over a long period of time, and the engine and the like provided in the machine room can be efficiently cooled over a long period of time.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part of 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 in the direction of arrows IV-IV in FIG. 3;

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

FIG. 6 is a top view showing a machine room, an operator cab, a counterweight and the like in FIG. 5;

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

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

[Explanation of symbols]

 Reference Signs List 3 machine room 4 engine 6 building cover 7 inflow port 13 radiator 14 cooling fan 18 inflow side chamber 19 engine side chamber 22, 34, 35 L-shaped fitting 23, 24 support plate 25, 33 elastic partition plate 26, 27, 36 press plate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 52-38532 (JP, U) JP-A 60-122216 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F01P 11/10 F01P 3/18 F01P 11/12

Claims (1)

(57) [Scope of request for utility model registration] 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 and the engine. A radiator located in the machine room and located at
A cooling fan that is driven to rotate by the engine and circulates air sucked from the inflow port around the engine in the machine room; a building cover and a radiator of the machine room
And located around the radiator and
The interior of the machine room is divided into an air inlet chamber and an engine chamber.
In a construction machine that includes a number of elastic partition plate, together with the respective elastic partition plate and the mounting portion of housing cover side
The radiator side is formed as a contact portion, and each of the elastic partition plates
Is attached to the building cover in a state where the contact portion side is concavely curved with respect to the engine side chamber , and the corresponding contact portion
The air in the inflow chamber side flows toward the engine room side
The radiator in a state where
A construction machine characterized in that the construction machine is configured to abut against the construction machine.