JP2001012246A - Connection and disconnection structure of radiator dust protective net on machinery for working - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a dust protective net to avoid inflow of dust to a radiator free to connect and disconnect it even in a narrow space. SOLUTION: A dust protective net 19 is divided into a plural number of parts and each of the divided dust protective nets 19 is connected and disconnected sequentially in a retractable state from the same position (upper half part of dust protective net connecting and disconnecting port) at the time of installing the dust protective net 19 to avoid inflow of dust on the air inflow side of a radiator 8 installed inside of an engine room free to connect and disconnect.

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 a radiator dust-proof net attachment / detachment structure for a working machine such as a hydraulic excavator.

[0002]

2. Description of the Related Art Generally, a working machine such as a hydraulic excavator is used in a dusty working environment such as a dismantling site. However, in a working machine engine room, a radiator is used. Since the outside air is sucked in to supply the cooling air, dust sucked together with the outside air may accumulate in the cooling air passage of the radiator and deteriorate the engine cooling performance.

[0003]

Therefore, it has been proposed to mount a dust-proof net for preventing the inflow of dust on the air inlet side of the radiator to maintain the engine cooling performance. In this case, the dust-proof net must be detachably attached for cleaning and replacement.However, in a small work machine where the space around the engine is limited, the engine hood and counterweight may interfere. In some cases, it was not possible to secure a space for attaching and detaching the dustproof net.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve these problems in view of the above-mentioned circumstances, and is provided on an air inlet side of a radiator provided in an engine room. In a working machine having a dust-proof net detachably mounted to prevent the inflow of dust, the dust-proof net is divided into a plurality of parts, and each of the divided dust-proof nets is sequentially attached to and detached from the same position. It is. In other words, since the dust-proof net can be attached and detached even in a small space, the dust-proof net can be detachably attached to a small work machine with limited space around the engine. Since it is easy, the workability at the time of cleaning and replacement can be improved. In addition, the engine room is covered with an openable and closable engine hood, and when the dust proof net is attached and detached from the opening portion when the engine hood is opened, the dust proof net is divided into a plurality of vertically parallel dust proof nets. One side of the dustproof net mounted at the uppermost position is opposed to the opening of the engine hood. That is, since the dust-proof net can be inserted and removed in the horizontal direction, the work for attaching and detaching the dust-proof net can be performed at a relatively low position. As a result,
Workability at the time of cleaning or replacement can be further improved. In addition, when the engine room is covered with an openable and closable engine hood, and the dustproof net is attached and detached from the opening when the engine hood is opened, the dustproof net attached to the air inlet side of the radiator is closed inside the closed engine hood. It is characterized in that it is stopped at the part. That is, since the inside of the engine hood is used to prevent the dustproof net from being removed, the number of parts can be reduced and the structure can be simplified as compared with the case where a dedicated retaining member is provided.

[0005]

Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a small-sized hydraulic excavator. The hydraulic excavator 1 includes a lower traveling body 2 provided with a pair of right and left crawler-type traveling devices, and an upper revolving body 3 provided on the lower traveling body 2 so as to be pivotable. , The working part 4 and the like provided at the front part of the upper revolving superstructure 3, all of which have the same conventional configuration.

Reference numeral 5 denotes an engine room formed at the rear of the upper swing body 3. In the engine room 5, an engine 6 is mounted horizontally and the engine 6 is mounted.
A radiator 8 for cooling the engine is provided upright at a position facing the cooling fan 7 provided on one side of the cooling fan. Also,
The engine room 5 has openings that are continuous with each other above and behind the engine room 5. A cab 9 overlaps the front upper portion of the engine room 5, while a counterweight 10 is provided below the engine room 5. Because of the overlap, the opening space is narrowed accordingly, and the openable and closable engine hood 11 that covers the opening of the engine room 5 is located above the engine room 5 even when it is open. Access to large parts is limited.

The radiator 8 is integrated with a radiator support 12 having an outside air inlet 12a for cooling (radiating) cooling water forcedly circulated between the engine 6 and the outside air sucked by the cooling fan 7. In this embodiment, since the radiator 8 is mounted on the engine side of the radiator support 12, the pipe between the radiator 8 and the engine 6 cannot be shortened as much as possible.
The radiator support 12 can be formed with a pipe insertion hole, and can save the trouble of passing a pipe through the pipe insertion hole.

Reference numeral 13 denotes a baffle unit for forming a cooling air passage between the radiator support 12 and the cooling fan 7. The baffle unit 13 covers substantially the right and left sides of the radiator 8 in a substantially U-shape in plan view. The radiator cover 14, a cylindrical shroud 15 that covers the periphery of the cooling fan 7, and a fan guard 16 that guards the engine side of the cooling fan 7 are integrally formed, and are attached to and detached from the radiator support 12. Mounted freely. That is, since the radiator cover 14, the shroud 15, and the fan guard 16 are configured as a detachable unit, it is not possible to improve the assemblability and simplify the structure. The maintainability around the fan can be improved.
Reference numeral 17 denotes a sealing material previously adhered to the upper and lower portions of the radiator 8 so as to cover the upper and lower openings of the radiator cover 14.

Reference numeral 18 denotes a dust-proof net guide provided between the radiator support 12 and the radiator 8. The dust-proof net guide 18 is formed of a substantially U-shaped plate-like member having an outside air inlet 18a. At the same time, the dustproof net guide 18 is attached to the engine side of the radiator support 12 at one side (the rear side of the fuselage) through a dustproof net attaching / detaching opening 14 a formed on the radiator cover 14. The rear of the engine room 5 can be seen. Since the counterweight 10 overlaps the rear lower part of the engine room 5 as described above, the lower side of the dustproof net guide 18 faces the counterweight 10, but at least the upper part of the dustproof net guide 18. The half portion faces the opening of the engine compartment when the engine hood is opened.

Reference numeral 19 denotes a dust-proof net for preventing dust from flowing into the radiator 8 side.
It is formed by stretching a net material on a frame material and is mounted in the dust-proof net guide 18. In the present embodiment, the dust-proof net 19 is vertically divided and each of the divided dust-proof nets 19 is The dust-proof net attachment / detachment opening 14a is sequentially attached and detached in the lateral direction from the same position (upper half). That is, at the time of mounting, first, after inserting the lower dustproof net 19 from the upper half part of the dustproof net attaching / detaching port 14a, the lower dustproof net 19 is lowered to the lower set position along the dustproof net guide 18, and thereafter The upper dust-proof net 19 is inserted from the same position of the dust-proof net attaching / detaching opening 14a, and the upper dust-proof net 19 is set on the lower dust-proof net 19 in an abutting manner. Will be done. Therefore, even with the small excavator 1 having a limited space, the dustproof net 19 cannot be detachably mounted, and the handling of the dustproof net 19 is facilitated to improve the workability at the time of cleaning and replacement. Since the dust-proof net 19 is inserted and removed in the horizontal direction, the work for attaching and detaching the dust-proof net 19 can be performed at a relatively low position. In addition, 1
Reference numerals 2b and 18b denote protrusions formed in the middle of the radiator support 12 and the dustproof net guide 18 in the vertical direction in the left-right direction, and the protrusions 12b and 18b partially adjust the guide width of the dustproof net guide 18. This prevents rattling of the dustproof net 19 and restricts the upper dustproof net 19 from falling.

Reference numeral 20 denotes a handle attached to one side of each dust-proof net 19. The handle 20 is attached to facilitate the removal and insertion of the dust-proof net 19. The handle 20 of the present embodiment has a crank shape. A pin 21 is integrally formed at a portion facing the radiator cover 14. On the other hand, a pair of upper and lower positioning holes 14b is formed in one side surface of the radiator cover 14, and a rubber bush 22 is formed in each positioning hole 14b.
However, since each positioning hole 14b is formed so as to match the position of the pin 21 when each dustproof net 19 is mounted at a predetermined position, only the pin 21 is inserted into the positioning hole 14b. Thus, the dustproof nets 19 are not allowed to be positioned, and the dustproof nets 19 can be prevented from loosening or coming off by tightening the bushing 22.

Reference numeral 23 denotes a soundproofing material adhered to the inner surface of the engine hood 11. The soundproofing material 23 is formed of a sponge-like member having a predetermined thickness and capable of being elastically deformed. When the hood 11 is closed, the upper dust-proof net 19 is prevented from coming off by pressing against the handle 20 of the upper dust-proof net 19 in a resilient manner. That is, when the engine hood 11 is closed, the length of the handle 20 is set so as to lightly contact the soundproof material 23.
It is possible to prevent the dust-proof net 19 from being pulled out by using, and as a result, it is possible to reduce the number of parts and to simplify the structure as compared with a case where a dedicated locking member is provided.

In this embodiment, when determining the length of the handle 20, the distance L between the handle 20 of the lower dustproof net 19 and the counterweight 10 is ensured, and the distance L is the length of the pin 21. Since it is set to be slightly larger than S, there is no inconvenience that the handle 20 interferes with raising and lowering the lower dust-proof net 19 and inserting / removing the pin 21. Also, when the pin 21 comes off due to body vibration or the like. To
The handle 20 contacts the counterweight 10 so that the lower dustproof net 19 can be prevented from coming off.

In the construction as described above, when a dustproof net 19 for preventing the inflow of dust is detachably mounted on the air inflow side of the radiator 8 provided in the engine room 5, a plurality of the dustproof nets 19 are provided. The dust-proof nets 19 are detached from the same position (the upper half part of the dust-proof net attaching / detaching opening 14a) in a removable manner, so that the dust-proof nets 19 can be attached and detached even in a narrow space. Therefore, the dustproof net 19 can be detachably attached to the small excavator 1 having a limited space around the engine, and the divided dustproof net 19 is easy to handle. Workability can also be improved.

The engine room 5 is covered with an openable and closable engine hood 11.
When attaching and detaching the dustproof net 19 from the opening portion when the dustproof net is opened, the dustproof net 19 is divided into a plurality of vertically parallel dustproof nets 19 and at least one side of the dustproof net 19 mounted at the uppermost position. Since the portion faces the opening of the engine hood 11, the dustproof net 19 can be inserted and removed in the lateral direction. Therefore, the work of attaching and detaching the dustproof net 19 can be performed at a relatively low position, and as a result, the workability at the time of cleaning and replacement can be further improved.

Further, since the dust-proof net 19 is stopped at the inner side (soundproof material 23) of the closed engine hood 11, the number of parts is reduced and the structure is simplified as compared with the case where a dedicated stopper member is provided. Can be measured.

The present invention is, of course, not limited to the above embodiment. For example, in the above embodiment, the dustproof net divided in the vertical direction is configured to be inserted and removed in the horizontal direction. The dustproof net divided in the vertical direction may be configured to be inserted and removed in the vertical direction, or the dustproof net divided in the vertical direction or the horizontal direction may be configured to be inserted and removed in the same direction as the divided direction.

[Brief description of the drawings]

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

FIG. 2 is a side view showing a radiator disposition portion of an engine room.

FIG. 3 is a plan view of the same.

FIG. 4 is a front view of the same.

FIG. 5 is a schematic perspective view of the same.

FIG. 6 is a perspective view of a main part of the dustproof net.

FIG. 7 is a main part plan view showing the operation of a pin and a positioning hole.

FIG. 8 is a main part side view showing a mounted state of the dustproof net.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 3 Upper revolving structure 5 Engine room 6 Engine 7 Cooling fan 8 Radiator 10 Counter weight 11 Engine hood 14 Radiator cover 14a Dust-proof net attaching / detaching port 18 Dust-proof net guide 19 Dust-proof net 20 Handle 21 Pin 22 Bush 23 Soundproof material

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Fujio Sakane 667, Iyacho, Oji, Higashiizumo-cho, Yatsuka-gun, Shimane 1 F-term in Mitsubishi Agricultural Machinery Co., Ltd. (reference) 2D015 CA02 3D038 AA04 AB09 AC11 AC16 AC23

Claims (3)

[Claims] 1. A work machine in which a dustproof net for preventing the inflow of dust is detachably mounted on an air inflow side of a radiator provided in an engine room, the dustproof net is divided into a plurality of parts, and each divided part is divided into a plurality of parts. A detachable structure for a radiator dustproof net in a working machine, wherein the dustproof net is sequentially attached and detached from the same position. 2. The vehicle according to claim 1, wherein the engine room is covered with an openable and closable engine hood, and a plurality of dustproof nets are vertically arranged in parallel when attaching and detaching the dustproof net from an opening portion when the engine hood is opened. A radiator dust-proof net attachment / detachment structure for a working machine, wherein the radiator dust-proof net is divided into a dust-proof net and at least one side of the dust-proof net mounted at an uppermost position is opposed to an opening of an engine hood. 3. The dustproof net according to claim 1, wherein the engine compartment is covered with an openable and closable engine hood, and the dustproof net is mounted on an air inlet side of the radiator when the dustproof net is attached and detached from an opening when the engine hood is opened. A radiator dustproof net in a working machine, wherein the radiator dustproof net is attached to the inside of a closed engine hood.