JPH11107314A - Oil cooler device for hydraulic shovel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compose an oil cooler device provided in parallel to a radiator device to be movable downward from a bottom surface of an upper rotary body. SOLUTION: An opening 19 is provided in a bottom surface 6a of an upper rotary body provided with an oil cooler device 10. A cover body 20 to close the opening 19 is provided to be freely opened/closed, and with the cover body 20 opened, front and rear end edge parts of a guide plate 16 integrally provided to the oil cooler device 10 are guided by a guide groove 14a of front and rear guide members 14 provided on a case body 12 of a radiator device 9 to move downward the oil cooler device 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an oil cooler for a hydraulic shovel capable of performing a work such as a bucket work.

[0002]

2. Description of the Related Art Generally, a hydraulic shovel of this type is equipped with a radiator device for cooling an engine and an oil cooler device for cooling hydraulic oil. In such a hydraulic excavator, there is a type that cools an oil cooler using cooling air of a fan provided in a radiator. In this case, the radiator device and the oil cooler device are arranged in two rows. .

[0003]

In such a case, when the oil cooler device is clogged, it is necessary to clean the oil cooler device. It is necessary to open the inspection lid and work, and there is a problem that it is difficult to clean the oil cooler device because the gap between the radiator device and the oil cooler device is small, and the present invention will be solved here. There was a problem.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems in view of the above-mentioned circumstances, and has a lower traveling body provided with a traveling device, a driver seat, 2. Description of the Related Art In a hydraulic excavator including an engine and an upper rotating body provided with a working device, a radiator device for cooling an engine and an oil cooler device for cooling hydraulic oil are arranged adjacent to each other in two rows. In the installation, an opening that can be opened and closed is formed in the bottom surface of the upper revolving structure, and the oil cooler device can be pulled down from the opening. By doing so, when it is desired to inspect and clean the oil cooler device, the oil cooler may be pulled down from the opening formed on the bottom surface of the upper rotating body, and as a result, the space between the radiator device and the radiator device may be narrow. In addition, the operator can easily inspect and clean the oil cooler device while staying on the ground without climbing on the upper surface of the upper swing body. In this case, the oil cooler device can be configured to be able to move up and down by a guide provided on the radiator device. In this way, even if the oil cooler device is moved up and down, the positional relationship with the radiator device can be improved. The cooling effect is not impaired.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a hydraulic excavator, which is a crawler type traveling device 2.
And an upper revolving structure 6 having a driver's seat 4 and a bucket working device 5. An engine room 7 is formed at the rear of the upper revolving structure 6, and an engine 8 is installed therein. What is done is the same as before.

A radiator device 9 is provided on the left side of the engine room 7 adjacent to the engine 8, and an oil cooler device 10 is further provided on the left side thereof. Here, a cooling fan 11 is provided between the engine 8 and the radiator device 9, and the cooling air sucked and blown by the cooling fan 11 cools the oil cooler device 10 and the radiator device 9. I have.

The radiator device 9 has a front and rear surface and an upper surface which are surrounded by a case body 12 which also functions as a shroud for covering the outer periphery of a cooling fan 11 arranged on the engine 8 side. The front and rear guide pieces 13 and 14 and the upper guide piece 15 are integrally provided on the outer surface of the projection 12 so as to protrude toward the oil cooler device 10. Each of the guide pieces 13, 14, 15 is formed with a guide groove 13a, 14a, 15a that is recessed outward. On the other hand, a guide plate 16 projecting forward and backward and upward is integrally fixed to the side of the radiator device 9 of the oil cooler device 10 so that the oil cooler device 10 can be moved up and down as described later. The front and rear protruding edge portions of the guide plate 16 are set so as to be slidably fitted in the guide grooves 13a and 14a and guided to move, and the upper edge portion is inserted into and removed from the guide groove 15a. It is set to fit freely. Reference numeral 17 denotes a restricting piece provided on the upper portion of the oil cooler device 10 so as to protrude in the front-rear direction. Reference numeral 18 denotes a locking member disposed at the front and rear portions of the lower end of the oil cooler device 10.

On the other hand, the bottom surface 6a of the upper revolving unit 6 is provided with an opening 19 having a size that allows the oil cooler device 10 to be pulled down, and a lid 20 that opens and closes the opening 19 through a hinge 20a. It is set so that it can be swingably opened and closed. In a normal use state, the oil cooler device 10 is in a set posture supported by a lid 20 screwed to close the opening 19. In this state, the front and rear and upper end edges of the guide plate 16 are fitted in the respective guide grooves 13a, 14a and 15a, respectively, and the locking member 18 is set to be locked to the edge of the opening 19. I have. Here, the locking member 18 is formed in a substantially rectangular shape by a spring steel material, and includes a protruding piece 18a that protrudes outward from a lower end of the oil cooler device 10 and a guide surface 18b that is bent inward from the distal end thereof. It is composed of In the setting posture of the oil cooler device 10, the projecting piece 18 a is strongly pushed inward by the edge of the opening 19, whereby the locking tool projecting piece 18 a is locked to the edge of the opening 19. It is set.

When the lid 20 is opened and swung from the set position, the oil cooler device 10 is pulled down from the opening 19 and tends to descend. At this time, the oil cooler device 10 is temporarily held by the locking member 18. It is set not to be dropped. From this temporary holding state,
The temporary holding by the locking member 18 is released by grasping the holding portion 10a of the oil cooler device 10 and forcibly pulling it down, and the oil cooler device 10 has the front and rear end edges of the guide plate 16 as described above. It is pulled down while being guided by 13a and 14a. And the regulating piece 17
Is locked to the front and rear end portions of the opening 19 so that the oil cooler device 10 is maintained in the lowered posture while being supported by the upper rotating body bottom surface 6a. Is set to Further, from this state, to return the oil cooler device 10 to the set state, the front and rear end edges of the guide plate 16 are
The oil cooler device 10 is moved upward in a state of being guided by the a and 14a. At this time, the oil cooler device 10 is controlled to move upward by the upper edge of the guide plate 16 abutting against the bottom of the guide groove 15a of the upper guide piece 15. Is set. In synchronization with the upward movement regulation, the locking member 18 of the oil cooler device 10 is elastically deformed through the guide surface 18a and crosses the edge of the opening 19 to be locked to the edge. Accordingly, the oil cooler device 10 is set to be positioned and temporarily held in the set posture.
If the lid 20 is closed and screwed in this positioning and temporary holding state, it can be returned to a normal use state.

[0010] In the embodiment of the present invention configured as described above, the oil cooler device 10 is normally in a set posture located on the upper surface side of the upper revolving unit 6, and is arranged in parallel with the radiator device 9. Opening 1 of revolving structure bottom surface 6a
It is arranged in a state where it is supported by a lid 20 that closes 9.
And in this case, the lid 2
By opening the oil cooler device 10 with the oil cooler device 10 opened, the oil cooler device 10 can be set in a lowered posture in which the oil cooler device 10 is moved below the bottom surface 6a of the upper rotating body. Therefore, when the oil cooler device 10 is to be cleaned and inspected, the posture is changed to the lowered posture, so that the worker can perform the cleaning work under the upper revolving unit 6 while staying on the ground. As a result, there is no need for the operator to get up on the upper surface of the machine and work as in the related art, and the workability can be improved. In addition, in this case, since only the oil cooler device 10 is lowered, the work can be performed without being disturbed by the adjacent radiator device 9 in the proximity state, and when the cleaning work with the compressed air is performed, Radiator 9 adjacent to dust etc.
This eliminates the problem of spraying air. further,
If the radiator device 9 is inspected from above in this state, it goes without saying that a problem that the oil cooler device 10 becomes an obstacle can be avoided.

In this case, the oil cooler 10
Is configured to move up and down while being guided by guide pieces 13, 14 and 15 provided integrally with the adjacent radiator device 9, so that there is an advantage that the up and down movement can be performed smoothly. Incidentally, it goes without saying that the oil cooler device 10 can be automatically raised and lowered by using an actuator such as a hydraulic cylinder.

[Brief description of the drawings]

FIG. 1 is a side view of a hydraulic excavator.

FIG. 2 is a plan view of the hydraulic excavator.

FIG. 3 is a rear view of the excavator.

FIG. 4 is a perspective view showing a setting posture of the oil cooler device.

FIG. 5 is a perspective view showing a lowered attitude of the oil cooler device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 6 Upper revolving body 9 Radiator device 10 Oil cooler device 11 Cooling fan 13 Guide piece 13a Guide groove 16 Guide plate 17 Restriction piece 18 Locking tool 19 Opening 20 Lid

Claims (2)

[Claims] 1. A radiator device for cooling an engine in a hydraulic excavator including a lower traveling body provided with a traveling device, an upper revolving superstructure provided with a driver seat, an engine, and a working device, and an operation thereof. When arranging the oil cooler device for cooling the oil side by side in two rows, an opening which can be opened and closed is formed on the bottom surface of the upper revolving structure so that the oil cooler device can be pulled down from the opening. The oil cooler device of the configured hydraulic excavator. 2. The oil cooler device of a hydraulic shovel according to claim 1, wherein the oil cooler device can be moved up and down by a guide provided on the radiator device.