JP3046271B2 - Arrangement mechanism of engine etc. in traveling work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of an engine, a hydraulic device, a cooling device and the like on a machine base in a traveling work machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6, 7, and 8, a traveling work machine having a front working unit such as a hydraulic excavator for performing heavy excavation work is provided at a central portion of a machine base 3 having a traveling device 2. A plurality of vertical girders 4 (auxiliary ribs) to which the working unit 5 is attached are protruded at a predetermined height in the front-rear direction, so that the machine base 3 has a sufficient strength.

[0003] As shown in FIGS. 7 and 8, an engine 7 mounted on the traveling work machine 1 is provided at the rear of the machine base 3 so as to straddle above the stringers 4 and the engine 7
Is horizontally provided with a gap so as not to contact the stringer 4, and a counterweight 6 is provided at the rear thereof.
Therefore, the height of the engine hood 9a and the like that covers the engine 7 is formed higher than the cover 9 that covers other devices. The radiator 10a and the cooler 10b for cooling the hydraulic oil are arranged so as to be cooled by a fan 10c driven by a belt from the crankshaft of the engine 7.

[0004]

However, in the above-described conventional arrangement of the engine 7, the hydraulic pump 8, and the related equipment, the engine hood 9a covering the engine 7 is such that the engine 7 is installed above the stringer 4. Driver's seat 1
5 is protruded high behind, which hinders the rear view of the operator, making it difficult to perform the operation, and involves a problem with danger.

Further, since the fan 10c of the cooling device 10 is directly belt-conducted from the engine 7, if the fan 10c is rotated at a high speed to increase the cooling air flow in order to increase the cooling efficiency, the rotation of the engine 7 is rotated at a high speed. However, there is a drawback that the heat balance performance is inconvenient, resulting in difficulty in efficient cooling, and that the noise level increases and it is difficult to perform comfortable work.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to lower the engine cover to improve the rear view, to reduce noise and facilitate work, and to maintain the engine and hydraulic drive parts. It is an object of the present invention to provide an arrangement mechanism of an engine or the like in a traveling work machine capable of easily performing an operation.

[0007]

According to the first aspect of the present invention, an arrangement mechanism for an engine or the like in a traveling work machine according to the present invention is driven by a driver's seat, an engine, and the engine.
Hydraulic pump and the operation of the traveling work machine from the above hydraulic pump
The hydraulic valve that controls the oil flow and the hydraulic pump
Traveling with a hydraulic oil tank for storing hydraulic oil
A work machine, the engine side for cooling the engine
Fan and a radiator for cooling the engine cooling water
And a hydraulic oil cooler for cooling the hydraulic oil.
In the traveling work machine, the radiator and the hydraulic oil cooler described above are used.
And a fan for cooling the cooling device.
Drive means for driving a fan of the cooling device
And take in by the cooling device fan
Cooling air through which cooling air for cooling the cooling device flows
A passage is provided, and the above engine and hydraulic pump are provided.
And taken in by the fan on the engine side
The cooling air that cools the engine and hydraulic pump
Cooling air passage and the cooling air passage of the cooling device
And a structure that separates the two cooling air passages,
The structure that separates the two cooling air passages
The air passage and the cooling air passage for the engine and hydraulic pump
Cover that covers the engine, which is installed between
It is characterized by being constituted by a part of

According to a second aspect of the present invention, in the traveling work machine according to the first aspect of the present invention, there is provided a mechanism for arranging a cooling air for cooling the engine and the hydraulic pump.
The cooling air passage through which the cooling air flows and the cooling air passage of the cooling device
The structure for paralleling the cooling passages and separating the two cooling passages
The cooling air passage of the cooling device and the engine and hydraulic port
The above-mentioned engine installed between the pump and the cooling air passage
Part of the cover that covers hermetically and the machine of the traveling work machine
And a vertical girder provided at the center. An arrangement mechanism for an engine or the like in the traveling work machine according to the third aspect of the present invention is the same as that of the first or second aspect.
The center of the machine with the traveling device
In the traveling work machine protruding in the direction,
Gin and hydraulic pump, etc. along one side of the stringer
And a driver's seat on the other side of the stringer.
In front of the counterweight at the approximate center of the rear of the machine
Radiator for cooling the above engine and hydraulic oil cooling
A cooling device comprising a cooler or the like;
Of the cooling air passage and the engine and the hydraulic pump
Paralleling and separating the cooling air passages as described above
Flow through the cooling air passage of the cooling device.
Suction the flow of cooling air from the front or below the machine
The cooling device is configured to cool and flow upward .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an explanatory view showing a plan view of a machine base configuration of a hydraulic shovel showing an embodiment of the present invention, and FIG.
FIG. 3 is an arrow view showing a cross section along the line A, FIG. 3 is an arrow view showing a cross section along the line BB in FIG. 1, and FIG. 4 is a schematic explanatory view showing a state in which a right side surface of FIG. FIG. 5 is a left side view showing a hydraulic excavator to which the arrangement mechanism such as an engine in the traveling work machine of the present invention is applied.

A traveling work machine according to an embodiment of the present invention, that is, a hydraulic shovel 1, horizontally rotates a machine base 3 as a swing frame to a crawler type traveling device 2 via a pivot bearing device 2 a as shown in FIG. freely provided, spaced H is the central part of the machine frame 3, as shown in FIG. 1, the projecting girder 4 L of the right and left side is longitudinal girders 4, the 4R in the longitudinal direction of the machine frame 3 At the same time, the front work part 5 having a bucket 5a is attached to the front end of the left and right side girder 4L, 4R, which is raised front and lowered rear, and a counter wight 6 also serving as a bumper is provided at the rear part. It is standing.

[0011] Then, as shown in FIGS.
Equipped with a hydraulic pump 8 to be directly connected via a connector 7a and the engine 7 in the front-rear direction along a right side of the right stringers 4 R above, sealed shape them with a cover 9 having an appropriate air exhaust port Covered. 7b is an intake pipe of the engine 7,
The exhaust pipe 7c is inserted into a hole 6a formed in the counterweight 6 to exhaust while suppressing noise. 9c is an air guide tube 9
blower (fan) for blowing air into the cover 9 through the b
It is.

A cooling device 10 is provided between the left and right vertical girders 4L and 4R and the rear counterweight 6. The cooling device 10 is a radiator 10 for the engine 7.
a discharge opening 10e provided at the same height as the top surface of the cover 9 in a side view (FIG. 3) in a side view (FIG. 3), and a cooler 10b for cooling hydraulic oil and a fan 10c are sequentially provided below the discharge opening 10e. However, the present invention is not limited to this, and any device may be used as long as it is in front of the counterweight 6 at the rear of the machine base 3.

The fan 10c is provided so as to be capable of cooling adjustment by a motor (fan driving means) 10d. In the case of this embodiment shown in FIG. 3, a hydraulic drive motor 10d is provided below the fan 10c. These are provided in a partition wall 13 communicating with the cooling device 10.
In addition, below and in front of the partition wall 13, the air inlets 13a, 1
3b is opened, and a hydraulic valve 12 is provided in front of 3b.

Reference numeral 15 denotes a driver's seat having various operating devices. In this embodiment, the driver's seat 15 is installed as a cabin type on the machine base 3 at the left front of the left vertical girder 4L, and is connected to the counterweight 6 at the rear. The electrical equipment device 16, the fuel tank 17, the hydraulic tank 18, and the like are sequentially arranged therebetween.

A hydraulic device 8a such as an engine 7 and a hydraulic pump 8 is provided on one side of the right girder 4R in the front-rear direction, and a cover 9 covering them is installed as low as possible behind the driver's seat 15. Is done. Since the embodiment of the present invention is constructed as described above, when operating the aircraft to start the engine 7, air blowing by the driving of the blower (fan) 9c along the longitudinal direction of the right vertical girder 4 R The hot air flowing in the cover 9 (the cooling air passage of the engine 7 and the hydraulic pump 8) flows in one direction, and the hot air staying around the engine 7 and the hydraulic pump 8 is swept out from an exhaust port provided appropriately on the cover 9 to cool the cover 9. .

Further, by driving the fan 10c (FIG. 3) for the cooling device 10, the cooling air is generated by the left and right vertical beams 4L, 4L.
R (the cooling air passage of the cooling device 10)
3a, 13b sucks cool air into the cooler 10
After the b and the radiator 10a are sequentially and accurately cooled, the air is discharged from the discharge opening 10e. Therefore, it is possible to prevent the exhaust air having the hot air from flowing into the cover 9 of the engine to impair the cooling efficiency.
The rotation of the engine 7 is preferably performed by a motor (fan driving means) 10d so as to maintain a heat balance adapted to various work rotations of the engine 7 without being restricted by the rotation of the engine 7, and the cooling of the engine 7 For this reason, the rotation of the engine 7 is not unnecessarily increased, so that a comfortable work such as excavation can be performed in a state where the noise is suppressed.

The operator is provided with a hydraulic device 8a such as an engine 7 and a hydraulic pump 8 provided on one side of a longitudinal girder 4R arranged in parallel with a space therebetween, so that a cover 9 covering them is provided. Since it is installed as low as possible behind the driver's seat 15, the rear visibility is improved, and it becomes easy to perform the work accurately and safely. The maintenance work of the engine 7, the hydraulic device 8a, and the like requires that the equipment can be installed at a lower part of the machine base 3 by the above configuration, and that these open a series of covers 9 on one side of the machine body. Therefore, work such as maintenance and inspection can be performed very easily without being hindered by the counterweight 6 erected at the rear of the machine.

[0018]

As described above in detail, according to the first aspect of the present invention, according to the mechanism for arranging an engine or the like in the traveling work machine, the driver's seat, the engine, and the engine are driven by the engine.
Hydraulic pump and the operation of the traveling work machine from the above hydraulic pump
The hydraulic valve that controls the oil flow and the hydraulic pump
Traveling with a hydraulic oil tank for storing hydraulic oil
A work machine, the engine side for cooling the engine
Fan and a radiator for cooling the engine cooling water
And a hydraulic oil cooler for cooling the hydraulic oil.
In the traveling work machine, the radiator and the hydraulic oil cooler described above are used.
And a fan for cooling the cooling device.
Drive means for driving a fan of the cooling device
And take in by the cooling device fan
Cooling air through which cooling air for cooling the cooling device flows
A passage is provided, and the above engine and hydraulic pump are provided.
And taken in by the fan on the engine side
The cooling air that cools the engine and hydraulic pump
Cooling air passage and the cooling air passage of the cooling device
And a structure that separates the two cooling air passages,
The structure that separates the two cooling air passages
The air passage and the cooling air passage for the engine and hydraulic pump
Cover that covers the engine, which is installed between
The cooling unit and the engine
Each cooling air that has cooled the gin
Each cooling air passage is circled by the structure that separates the passages.
It flows smoothly and the cooling efficiency can be improved. Claim
2. Arrangement of engines and the like in the traveling work machine of the present invention described in 2
According to the mechanism, in the configuration of claim 1, the above d.
The cooling air that cools the engine and hydraulic pump flows
The cooling air passage and the cooling air passage of the cooling device are connected in parallel.
And the structure for separating the two cooling passages is the same as that of the cooling device.
Cooling air passages and cooling air for the above engine and hydraulic pump
The above-mentioned engine arranged between the air passage and the air passage is hermetically covered.
Provided on a part of the cover and the machine of the traveling work machine
Since it is composed of the vertical girder ──, in addition to the effect of claim 1,
The engine, hydraulic pump, etc. are mounted on the cover and the
Cover the above engine, hydraulic pump, etc.
The operation noise can be cut off to reduce noise.

According to the third aspect of the present invention, there is provided an arrangement of an engine or the like in a traveling work machine according to the first or second aspect.
In the configuration of the above, a plurality of
In a traveling work machine with the longitudinal girder protruding in the front-rear direction,
Place the engine and hydraulic pump on one side of the stringer
Along the other side of the stringer, there is a driver's seat
At the same time as installing, the counter at the approximate center of the rear of the machine
In front of the weight, a radiator for cooling the above engine and
A cooling device consisting of a cooling oil and hydraulic oil cooler is provided.
The cooling air passage of the cooling device, the engine, and
The cooling air passage of the hydraulic pump is connected in parallel as described above.
The cooling air of the cooling device
Direct the cooling air flowing through the passage to the front or below the machine
To cool the cooling device and flow upward
In addition to the effect of claim 1 or 2 ,
Each cooling air that has cooled the cooling system and the engine
Each of the above cooling air passages is separated by the structure described above.
Flowing smoothly through the cooling air passage to improve cooling efficiency
Can be. Hydraulic equipment such as the engine and the hydraulic pump
The front and rear sides of the stringer facing the driver's seat
And can be installed in a separate position from the engine above.
The radiator and hydraulic oil cooler described above can be cooled accurately.
To reduce noise while improving cooling efficiency
And can perform comfortable work. Further, the engine, the hydraulic device, and the like can be installed at a lower portion of the machine base, and the maintenance work can be performed by opening a series of the covers on one side of the machine body. In addition, the maintenance work and the like can be easily performed without being hindered by the counterweights provided upright on the rear part of the machine body. Further, the radiator, the hydraulic oil cooler, and the like can be accurately cooled at a position separate from the engine, and noise can be suppressed while improving cooling efficiency.

Further, since the cover for covering the engine and the like is installed as low as possible behind the driver's seat and the rear view is improved, the operator sitting on the driver's seat can control the operation of the aircraft very comfortably. You can work comfortably, safely and efficiently. Further, the maintenance work of the engine, the hydraulic device, and the like can be performed at a lower position of the airframe, and the maintenance work is performed intensively from one side of the airframe. is there.

[0021]

[0022]

[Brief description of the drawings]

FIG. 1 is a view illustrating one embodiment of the present invention, and is a plan view of a machine base configuration of a hydraulic shovel.

FIG. 2 is an arrow view showing a cross section along the line AA in FIG. 1;

FIG. 3 is an arrow view showing a cross section along the line BB of FIG. 1;

FIG. 4 is a schematic explanatory view showing a state in which a right side surface of FIG. 1 is partially broken.

FIG. 5 is a left side view showing a hydraulic excavator to which an arrangement mechanism such as an engine in the traveling work machine of the present invention is applied.

FIG. 6 is an explanatory view showing a plane of a machine base configuration of a conventional hydraulic shovel.

FIG. 7 is an arrow view showing a cross section along the line CC of FIG. 6;

FIG. 8 is a left side view showing a partially broken state of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling work machine (hydraulic excavator) 2 Traveling device 3 Machine stand 4 Vertical girder 4L Left vertical girder (partition) 4R Right vertical girder (partition) 5 Front working part 6 Counter weight 7 Engine 7a Connecting tool 7b Intake pipe 7c Exhaust Pipe 8 Hydraulic pump 9 Cover 9a Engine hood 9b Air guide tube 9c Blower (fan) 10 Cooling device 10a Radiator 10b Cooler 10c Fan 10d Motor (fan driving means) 10e Discharge opening 12 Hydraulic valve 13 Partition wall 13a Intake port 13b Intake port 15 Driver's seat 16 Electric equipment 17 Fuel tank 18 Hydraulic tank

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Keiji Numata 1-3-2 Kitaaoyama, Minato-ku, Tokyo New Caterpillar Mitsubishi Corporation (56) References JP-A-2-109726 (JP, A) Hei 7-5869 (JP, U) Japanese Utility Model 2-59255 (JP, U) Japanese Utility Model 2-54725 (JP, U) Japanese Utility Model 55-114721 (JP, U) Japanese Utility Model 57-8119 (JP) , U) Japanese Utility Model Showa 57-8115 (JP, U) Japanese Utility Model Showa 59-183952 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 11/04 E02F 9/00

Claims (3)

(57) [Claims] 1. A driver seat, an engine, and the engine.
Hydraulic pump driven by the
A hydraulic valve that controls the flow of hydraulic fluid in industrial machinery,
A hydraulic oil tank that stores hydraulic oil sucked into the pump
A traveling work machine having the engine for cooling the engine.
Cool the engine side fan and the engine cooling water
Radiator and hydraulic oil cooler for cooling the above hydraulic oil
In the traveling work machine having the radiator,
A cooling device composed of a dynamic oil cooler, etc .;
Fan to drive the fan of the cooling device
Cooling means and cooling fan
The cooling air that cools the cooling device
A cooling air passage is provided for the engine and hydraulic pump.
And the fan on the engine side
Cooling to cool the above engine and hydraulic pump
The cooling air passage through which air flows and the cooling air passage of the cooling device
Structure in which the cooling air passages are parallel to each other and the cooling air passages are separated from each other.
The structure that separates the two cooling air passages
The cooling air passage of the device and the engine and hydraulic pump
The above-mentioned engine installed between the cooling air passages is sealed.
Characterized by comprising a part of the cover to cover the
An arrangement machine such as an engine in the traveling work machine according to claim 1.
Structure. 2. The cooling of the engine and the hydraulic pump.
Cooling air passage through which cooling air flows
Paralleling the cooling air passage and separating the two cooling passages
The structure consists of the cooling air passage of the cooling device and the engine
And the cooling air passage of the hydraulic pump
Part of the cover that covers the engine in a sealed state
It is characterized by the fact that the
The engine in the traveling work machine according to claim 1, wherein
Etc. arrangement mechanism. 3. A vehicle having a traveling device, wherein a plurality of
In a traveling work machine with stringers projecting in the front-rear direction,
Place the engine, hydraulic pump, etc. on one side of the
The driver's seat on the other side of the stringer.
And the counter at the center of the rear of the machine.
The radiator for cooling the engine
A cooling device consisting of a hydraulic oil cooling cooler is installed.
The cooling air passage of the cooling device, the engine and the oil.
And the cooling air passage pressure pump in parallel as described above
And a structure for separating the cooling air from the cooling device.
Is the flow of cooling air flowing through the
So that the cooling device cools and flows upward.
The traveling according to claim 1 or 2, wherein the traveling is configured.
A mechanism for arranging engines and the like in work machines