JP2004060606A - Engine room structure of traveling working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine room structure of a traveling working machine allowing a condenser 5, an inter-cooler 7, and an oil cooler 6 to be installed on the front face of a radiator so that a maintenance operation can be easily performed and capable of increasing the efficiency of an engine. <P>SOLUTION: The condenser 5, the inter-cooler 7, and the oil cooler 6 are disposed in series, from the front side, on the front face of the radiator having a cooling fan 31 for the engine mounted on a traveling frame 2 so that they can be rotatably retracted around the rotating mounting devices thereof from a working attitude to a maintenance attitude in which the front face of the radiator 4 is opened. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an engine room structure of a traveling work machine such as a tractor.
[0002]
[Prior art]
Conventionally, as disclosed in Japanese Patent Application Laid-Open No. H08-113043, a condenser, an oil cooler, and a radiator are arranged in series from the front side in front of a cooling fan of an engine, and a battery is installed in front of the condenser and covered with a hood. A tractor that forms an engine room is already known.
[0003]
[Problems to be solved by the invention]
The engine room structure of the tractor as disclosed in the above publication has a structure in which the battery is first removed when cleaning is required when the radiator is clogged due to dust or the like, or when performing maintenance work such as repair or inspection of each part. After that, the condenser and the oil cooler were removed, the front of the radiator had to be opened, and the radiator had to be cleaned, which was troublesome. In addition, when the condenser or the oil cooler is removed, there is a problem that a complicated operation such as removal of the refrigerant gas and the working oil is required.
[0004]
For this reason, in recent years, maintenance work has been performed in which the front side of the radiator is opened by tilting the other side with the rotation mounting shaft on one side as a fulcrum without removing the condenser or the oil cooler. In such a traveling work machine, when the engine E is provided with a turbocharger and an intercooler for cooling the air pressurized by the turbocharger is to be installed, the condenser and the oil cooler and the intercooler are mounted on the same rotary mounting shaft. When the pivot is used as a fulcrum, the maintenance work of each part is difficult to perform, and when the three members are pivoted in the same direction, the pivot mounting fixture becomes large and the structure of the mounting machine frame and the like also becomes large. is there.
[0005]
[Means for Solving the Problems]
The engine room structure of the traveling work machine of the present invention for achieving the above object is configured as follows.
[0006]
1) A condenser 5, an intercooler 7, and an oil cooler 6 are arranged in series from the front side in front of a radiator 4 provided with a cooling fan 31 of an engine E mounted on the traveling body 2, and each of them is a separate rotary mounting member. The radiator 4 is provided so as to be able to retract and rotate from a working posture to a maintenance posture in which the front surface of the radiator 4 is opened.
[0007]
2) The condenser 5 is rotated laterally with the vertical axis as a fulcrum, and a horizontal axis, which is a rotation fulcrum of the intercooler 7 and the oil cooler 6, is provided below the radiator mounting frame 3 so as to be vertically separated from each other. It is characterized by being supported.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0009]
Reference numeral 1 shown in FIG. 1 is a tractor (traveling work machine) provided with a crawler-type traveling device 2a. The tractor (traveling machine body) 2 connected to a traveling frame 2b of the traveling device 2a has an engine E from the front. A three-point link mechanism 12 for mounting a working machine such as a tilling device is provided at the rear of the engine room 3R, which is formed by covering the engine room 3R with a cabin 11 and a propeller. From the HST system as it is driven via a shaft (not shown), the left and right traveling devices 2a are driven, and the PTO shaft for working machine transmission is also driven from the propeller shaft via a transmission. ing.
[0010]
The engine room structure in the engine room 3R is divided into front and rear by a radiator mounting frame 3 as shown in FIGS. 2 to 4, and the radiator mounting frame 3 has a ventilation hole 3a formed in the center (FIG. 3). The radiator 4 is detachably fixed to the back surface of the engine, and a shroud 30 is integrally formed to extend rearward from the outer periphery of the ventilation port 3a. The shroud 30 is provided on the rotating shaft of the engine E in the shroud 30. A cooling fan 31 is provided, and cooling air A is introduced from the front side of the bonnet 10 toward the engine E.
[0011]
On the front side of the radiator mounting frame 3, the mesh body 8 for preventing intrusion of dust and dirt from the front side from the cooling side, the condenser 5 for the air conditioner of the operating unit, and the hydraulic oil for the hydraulic drive unit are cooled. An oil cooler 6 is disposed in the same manner as in the conventional device, and an intercooler 7 is provided between the two so as to cool the air which is taken in through an air cleaner 7a, pressurized by a turbocharger and heated and supplied to the engine E. These are interposed and provided in series with the radiator 4 so that the cooling air A can be efficiently cooled by a series of air guide paths.
[0012]
In addition, the area in the front view of the three members is increased in the order of the condenser 5, the intercooler 7, the oil cooler 6, and the radiator 4, so that the cooling air A flows smoothly.
[0013]
A battery 15 is removably attached to the machine base 2 in front of the frontmost (upstream) net 8. As shown in FIG. 3, a fixed frame 32 surrounding the front side of the ventilation opening 3a is provided on the front side of the radiator mounting frame 3, and the upper part of the fixed frame 32 can be connected to and separated from a front side part of which is cut away. A movable frame 33 (a kind of box-like type) for mounting the capacitor 5 to be joined to the right side of the fixed frame 32 is rotated by a rotary mounting tool 35 such as a hinge on the right side of the fixed frame 32, as shown by a solid line in FIG. Therefore, it is possible to switch to the “maintenance posture” shown by a chain line that is rotated around the longitudinal axis of the rotation mounting tool 35 over the battery 15 and retracted and turned sideways so as to be fixed.
[0014]
The height of the lower end of the movable frame 33 is higher than the height of the battery 15 installed in the front, so that the lower end of the movable frame 33 does not collide with the battery 15. Further, a mounting piece 33 a extending to the other side of the rotary mounting tool 35 is fixed to the mounting screw 32 a of the fixed frame 32 so as to be detachable.
[0015]
In addition, the condenser 5 is fixed in the movable frame 33, and a receiver 50 for an air conditioner is mounted on a side surface on the side of the rotary mounting tool 35 (FIG. 3). Reference numeral 51 denotes a hose connected to an evaporator (not shown) on the main unit of the air conditioner.
[0016]
Next, the mounting structure of the oil cooler 6 will be described.
[0017]
As shown in FIG. 2, the oil cooler 6 is rotatably mounted below the radiator mounting frame 3 by a rotary mounting tool 60 such as a hinge, and the upper portion is fixed to the radiator mounting frame 3 by a fixing tool 61 such as a screw. It is fixed to be detachable. Specifically, when the front movable frame 33 is rotated from the “operation posture” shown by the solid line in FIG. 2 to the “maintenance posture”, the fixing tool 61 is released and the oil cooler 6 is turned downward. Can be largely rotated in the direction approaching the battery 15 toward the front side about the horizontal axis, and can be switched to the “maintenance posture” as shown by a chain line. Reference numeral 63 denotes a flexible oil hose connected to the hydraulic drive side.
[0018]
On the other hand, the intercooler 7 is provided with a rotation attachment 65 at a position below and below the rotation attachment 60 of the oil cooler 6 below the radiator attachment frame 3 so that the battery 15 can be moved toward the front side as much as possible. The radiator mounting frame 3 is attached so as to be pivoted largely to a position close to the radiator mounting frame 3 and is fixed to the radiator mounting frame 3 by a fixing tool 61a such as screws.
[0019]
The pipe 67 on the intercooler 7 side and the pipe 68 on the engine E side are removably connected above the radiator 4.
[0020]
In the engine room structure of the traveling work machine configured as described above, the condenser 5, the intercooler 7, the oil cooler 6, and the radiator 4 are arranged in series in the "operating posture" shown in FIGS. The cooling air A from the fan 31 can be received on the entire surface and can be cooled well.
[0021]
In addition, during maintenance work such as dust removal when clogging due to dust or the like due to the work occurs, first, the mesh body 8 having sashes formed on the left and right is pulled upward, and then the capacitor 5 is drawn. As shown in FIG. 3, maintenance work such as cleaning of the front and rear surfaces can be easily performed in a free posture by rotating the lateral side around the vertical axis as a fulcrum and separating from the intercooler 7.
[0022]
At this time, when the movable frame 33 is rotated to the maintenance posture, the condenser 5 and the receiver 50 located in front of the intercooler 7 are passed over the battery 15 and retracted to the side, so that the maintenance of the front side of the intercooler 7 is performed. Work can be done easily.
[0023]
When the maintenance of the intercooler 7 is performed, in the maintenance posture of the condenser 5 shown in FIG. 3, it is fixed to the radiator mounting frame 3 by rotating (tilting) forward with the horizontal axis 65 as a fulcrum as shown in FIG. 2. From the oil cooler 6, and tilted to a position close to the battery 15.
[0024]
In this state, maintenance work on the back side of the intercooler 7 and the front side of the oil cooler 6 can be performed. At this time, since the rotation attachment 65 is provided below the rotation attachment 60 of the oil cooler 6, the space below the intercooler 7 and the oil cooler 6 can be largely separated, and maintenance work can be easily performed (FIG. 2).
[0025]
Next, when the maintenance work of the radiator 4 is performed, the condenser 5 and the intercooler 7 are retracted to the maintenance posture as described above. The front surface of the radiator 4 can be widely opened by lowering the oil cooler 6 to the maintenance posture as shown in FIG.
[0026]
At this time, if the oil cooler 6 provided with the rotary mounting member 60 above the rotary mounting member 65 of the intercooler 7 is brought into contact with the intercooler 7 to support the oil cooler 6 in the maintenance position, the tilt angle of the oil cooler 6 is reduced. Since the inclination angle of the cooler 7 is larger than the inclination angle of the cooler 7, the front surface of the radiator 4, which is located at the innermost side and has the largest area, can be largely opened, so that maintenance work can be performed efficiently and easily.
[0027]
Then, after completing the maintenance work as described above, the work is returned to the working posture again and the work by the tractor 1 is performed. At this time, since the intercooler 7 is arranged in front of the oil cooler 6, the cooling performance of the intercooler 7 can be made higher than that of the oil cooler 6. And the exhaust gas can be purified by promoting complete combustion of the fuel.
[0028]
Further, when the condenser 5 and the front surface of the radiator 4 are switched to the maintenance position and are opened as described above, it is possible to easily perform operations such as removing and repairing the condenser 5 and the oil cooler 6. is there.
[0029]
Further, since the condenser 5 and the oil cooler 6 can be retracted from the front surface of the radiator 4, the radiator 4 and the oil cooler 6 can be cleaned without removing the cooler gas and the hydraulic oil.
[0030]
【The invention's effect】
As is apparent from the above description, according to the engine room structure of the traveling work machine of the present invention, the condenser 5, the intercooler 7, the oil cooler 6, and the radiator 4, which are arranged in series, force the cooling air by the cooling fan 31. Cooling can be favorably performed by the flow, and the cooling of the intercooler 7 can be promoted to increase the intake charging efficiency of the engine E, thereby improving the engine efficiency.
[0031]
At the time of maintenance work such as removal of clogging of the radiator 4 or the like, the condenser 5, the intercooler 7, and the oil cooler 6 are not detached, but are simply rotated and retracted to efficiently perform individual maintenance work. It can be done.
[0032]
In addition, the condenser 5 is turned laterally about the longitudinal axis of the rotating fixture 35 as a fulcrum, and a horizontal axis serving as a pivot of the intercooler 7 and the oil cooler 6 is provided below the radiator mounting frame 3 in the vertical direction. In the maintenance posture rotated forward, the tilting posture of the oil cooler 6 is supported in contact with the intercooler 7 so that the foremost condenser 5 is positioned at the center of the vertical axis such as the battery 7. The upper part of the intercooler 7 and the oil cooler 6 are tilted forward with the horizontal axis as the center of the horizontal axis below the front side of the radiator 4, and the oil cooler 6 is stabilized to the intercooler 7 in this state. Since the front surface of the radiator 4 is widely opened by widely supporting, the maintenance work can be performed efficiently, and the structure of the engine room 3R is simplified. It can be made compact.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor.
FIG. 2 is a left side view showing an engine room structure.
FIG. 3 is a plan view showing a structure of a main part of FIG. 2;
FIG. 4 is a left side view showing a relationship between various heat exchangers and an engine.
[Explanation of symbols]
1 tractor (traveling work machine)
2 traveling aircraft (machine stand)
REFERENCE SIGNS LIST 3 radiator mounting frame 4 radiator 5 condenser 6 oil cooler 7 intercooler 31 cooling fan 32 fixed frame 33 movable frame 35 rotating mount (vertical axis)
60 Rotating fixture (horizontal axis)

Claims (2)

A condenser 5, an intercooler 7, and an oil cooler 6 are arranged in series from the front side in front of a radiator 4 provided with a cooling fan 31 of an engine E mounted on the traveling body 2, and each of the condensers 5 is supported by a separate rotating fixture. The engine room structure of the traveling work machine is provided so as to be able to retreat and rotate to the maintenance position in which the front surface of the radiator 4 is opened from the operation position. The capacitor 5 is rotated laterally with the vertical axis as a fulcrum, and the horizontal axis, which is the rotation fulcrum of the intercooler 7 and the oil cooler 6, is supported below the radiator mounting frame 3 by being vertically separated from each other. Item 2. An engine room structure of the traveling work machine according to Item 1.

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