JPH0941973A - Oil cooler setting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the alignment of bolt holes in time of the cleaning work of a swing-out type oil cooler. SOLUTION: In this swing-out type oil cooler having screwed one side part 12a of an oil cooler in one side part 11a of a radiator, a bracket 18 is installed tight in the lower part of another side part 11b of the radiator, while a nut 19 is welded to this bracket 18 and a bot 20 is screwed therein. A locking nut 21 is screwed in the bolt 20 which is formed lockably at a height position being optionally up and down. At the time of clamping the bolt after cleaning the radiator and oil cooler, the locking nut 21 is loosened to some extent, making the bolt upward, and an underside of another end 12b of the oil cooler is pushed upwared with a head part 20a of the bolt, and the oil cooler 12 is made into a state of being jacked up, whereby an insertional hole 15 and a screw hole 16 are accorded with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil cooler mounting device, and more particularly to an oil cooler mounting device arranged in front of a radiator installed in an engine hood of a construction machine.

[0002]

2. Description of the Related Art Conventionally, in construction machines such as hydraulic excavators, an oil cooler is arranged in front of a radiator for cooling an engine installed in an engine hood, and a cooling fan rotates to cool the wind from the outside of the engine hood. Is sucked in to reduce the oil temperature in the oil cooler and the water temperature in the radiator.

Here, one side of the oil cooler is hinged to one side of the radiator via a rotary support tool such as a hinge, and the oil cooler is horizontally rotated with the rotary support tool as a pivot. There is also known a so-called swing-out type oil cooler that is mounted so as to be possible.

A mounting flange is provided at a corner of the swing-out type oil cooler, and the oil cooler is fixed to the radiator by bolting the mounting flange to the front surface of the radiator.

When cleaning the oil cooler and the radiator, the bolts tightened on the mounting flange are loosened and removed, and the oil cooler is horizontally swung to swing out, so that the space between the radiator and the oil cooler is removed. Open widely.

Then, pressurized air or steam is blown to the oil cooler to remove dust attached to the core, and the radiator is also blown with pressurized air or steam to clean the core.

After the cleaning of both the radiator and the oil cooler is completed, the oil cooler is rotated to its original position to bring the mounting flange into contact with the front surface of the radiator, and then the mounting flange is bolted again to fix the oil cooler to the radiator. Fixed to.

[0008]

In the conventional swing-out type oil cooler, one side portion of the oil cooler is supported by the rotation support member, so that the other side portion tends to lower due to the weight of the oil cooler. . For this reason, when the oil cooler is rotated to its original position after cleaning, the bolt insertion hole of the mounting flange is displaced to a lower position than the screw hole provided in the radiator, which makes it difficult to screw the bolt. It was

In such a case, the centering rod is inserted into the bolt insertion hole, the tip of the rod is thrust into the screw hole, and the bolt is screwed while aligning both holes. It is easily damaged.

Then, there arises a technical problem to be solved in order to facilitate the alignment of the bolt holes during the cleaning work of the swing-out type oil cooler,
An object of the present invention is to solve this problem.

[0011]

DISCLOSURE OF THE INVENTION The present invention has been proposed in order to achieve the above object, and an oil cooler is arranged in front of an engine cooling radiator installed in an engine hood. An oil cooler mounting device in which one side of an oil cooler is hinged to a side portion via a rotation support tool, and the oil cooler is horizontally rotatable about the rotation support tool as a fulcrum. A bracket is fixedly installed on the lower side of the other side of the radiator, a nut is fixed to the bracket, a bolt is screwed from above, and a nut for locking is screwed onto this bolt to fix the bolt at an arbitrary vertical position. And an oil cooler mounting device configured to press the other side lower surface of the oil cooler upward by the head of the bolt when the bolt is raised. Than it is.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. In FIGS. 1 and 2, reference numeral 11 is a radiator for cooling an engine in a construction machine such as a hydraulic excavator, and an oil cooler 12 is arranged in front of the radiator 11. The one side portion 12a of the oil cooler is pivotally attached to the one side portion 11a of the radiator via a rotation support tool 13 such as a hinge or a hinge pin, and the oil cooler 12 rotates horizontally with the rotation support tool 13 as a rotation fulcrum. Form it as possible.

Mounting flanges 14 are provided at the top, bottom, left and right corners of the oil cooler 12.
4, a bolt insertion hole 15 is opened, and a screw hole 16 is provided on the front surface of the radiator facing the insertion hole 15.
Then, by inserting the bolt 17 into the insertion hole 15 and screwing the bolt 17 into the screw hole 16, the radiator 11
The oil cooler 12 is fixed to the front surface of the.

A bracket 18 is fixedly installed below the other side portion 11b of the radiator, a nut 19 is welded to the bracket 18 and a bolt 20 is screwed from above, and a locking nut 21 is fixed to the bolt 20. Screw together. Rotate the bolt 20 in either the left or right direction to rotate the bolt head 20a.
After moving up and down, by rotating the lock nut 21 clockwise and tightening it on the nut 19, the rotation of the bolt 20 is locked and the bolt 20 can be fixed at any vertical position.

When the construction machine is put into a working state, the head 20a of the bolt is set at a position away from the lower surface of the oil cooler 12, and the bolt 20 is fixed. Radiator 1
When cleaning 1 and the oil cooler 12, first, all the bolts 17 fastened to the mounting flange 14 are loosened and removed. Next, when the worker grips the other side portion 12b of the oil cooler and pulls it toward the front, the oil cooler 12 moves horizontally with the rotation support 13 as the fulcrum of rotation as shown by the chain double-dashed line in FIG. By rotating, the radiator 11 and the oil cooler 12 are widely opened.

In this state, if pressurized air or steam is blown to the core of the radiator 11 and the core of the oil cooler 12, dust adhering to both cores is blown away, and the radiator 11 and the oil cooler 12 are separated from each other. It is discharged from the gap.

After cleaning the radiator 11 and the oil cooler 12 in this manner, the oil cooler 12 is rotated to the original position in the reverse order of the above procedure, and the mounting flange 14 is brought into contact with the front surface of the radiator 11. Contact. At that time, the other side portion 1 of the oil cooler is caused by its own weight.
2b is lowered, and as shown in FIG. 3, the insertion hole 15 of the mounting flange 14 is displaced to a lower position with respect to the screw hole 16 provided in the radiator 12.

In such a case, the lock nut 2 is used.
1 to the left to loosen the nut 19 and tighten the bolt 2
After unlocking 0, the bolt 20 is rotated counterclockwise and raised. Then, as shown by the chain double-dashed line in the figure, the head portion 20a of the bolt is brought into contact with the lower surface of the other side portion 12b of the oil cooler.

Further, if the bolt 20 is rotated counterclockwise, the other side portion 12b of the oil cooler is moved by the head portion 20a of the bolt.
Lower surface of the oil cooler is pressed upward, and the other side portion 12b of the oil cooler is pressed.
Is pushed up, and the insertion hole 15 of the mounting flange 14 is pushed.
Are aligned with the screw holes 16.

Then, as shown in FIGS. 4 and 5, the oil cooler 12 is jacked up by the bolts 20, and the insertion holes 15 and the screw holes 16 are aligned with each other so that the bolts 17 The screwing can be performed easily and quickly.

After the oil cooler 12 is attached and fixed to the front surface of the radiator 11 as described above, the bolt 2
0 is rotated clockwise and lowered to separate the head portion 20a of the bolt from the lower surface of the other side portion 12b of the oil cooler. Further, when the locking nut 21 is rotated clockwise and tightened to the nut 19, the rotation of the bolt 20 is locked and the state shown in FIGS. 1 and 2 is restored. Therefore, the bolt 20 and the oil cooler 12 do not interfere with each other due to the vibration during the construction work, and the damage of the oil cooler 12 can be prevented.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0023]

As described above, according to the present invention, when one side portion of the oil cooler is hinged to the radiator so as to be rotatable in the horizontal direction, the lower surface of the other side portion of the oil cooler is used as a bolt. The oil cooler is jacked up and the bolt holes are aligned by being formed by pushing up the oil cooler.

Therefore, the bolt tightening after opening and closing the oil cooler becomes extremely easy, the working time for cleaning the radiator and the oil cooler is greatly reduced, and the bolt and the screw hole are not damaged. It is an invention that exhibits various kinds of effects, such as contributing to improvement of durability.

[Brief description of drawings]

FIG. 1 is a front view of an oil cooler attached state.

FIG. 2 is a side view of the oil cooler attached and opened.

FIG. 3 is a front view of a main part for explaining the alignment of the insertion hole and the screw hole.

FIG. 4 is a front view of a state where the oil cooler is jacked up.

FIG. 5 is a side view showing a state where the oil cooler is jacked up.

[Explanation of symbols]

 11 Radiator 11a One side of radiator 12 Oil cooler 12a One side of oil cooler 13 Rotating support 14 Mounting flange 15 Insertion hole 16 Screw hole 17 Bolt 18 Bracket 19 Nut 20 Bolt 20a Bolt head 21 Lock nut

Claims (1)

[Claims] 1. An oil cooler is arranged in front of a radiator for cooling an engine installed in an engine hood, and one side portion of the radiator is hinged to one side portion of the radiator via a rotation support member. In an oil cooler mounting device in which an oil cooler is horizontally rotatable around a rotary support as a fulcrum, a bracket is fixedly installed on the lower side of the other side of the radiator, and a nut is fixed to the bracket. A bolt is screwed on from above, and a lock nut is screwed on this bolt so that the bolt can be fixed at an arbitrary height position in the vertical direction, and when the bolt is raised, the bolt An oil cooler mounting device, characterized in that the head is configured to push the lower surface of the other side of the oil cooler upward.