JP2005248650A - Hot air exhaust outlet structure of construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To instantaneously remove earth, sand, etc. dropped on a car body by using hot air after air cooling. <P>SOLUTION: Exhaust outlets 10a, 10b exhausting hot air after air cooling are arranged so as to direct the hot air discharged from these outlets toward positions ( basal end of the boom 3 ) where earth, sand, etc. are easy to settle in the car body of the construction machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an exhaust port structure for hot air after air cooling provided in a construction machine.

  The construction machine is equipped with a heat exchanger for cooling the engine, etc. When the heat exchanger is air-cooled, either the suction method (external air suction method) or the blower method (wind blowing method) Even in this case, the air after cooling, that is, hot air is discharged to the outside. For this reason, a hot air exhaust port is provided in one of the vehicle body covers of the construction machine (for example, in Japanese Patent Laid-Open No. 2001-107733, it is provided on the side of the vehicle body).

JP 2001-107733 (FIG. 2)

  By the way, many construction machines are provided with a work tool, and the work tool performs civil engineering work such as excavation and transportation of earth and sand. The work tool is connected to a boom, an arm, and the like, and in conjunction with the boom and the arm, performs operations such as scooping up soil and the like during work.

  For this reason, earth and sand spilled from the work tool often falls on the vehicle body, and often accumulates on the vehicle body. For example, it is easy to deposit in the back part like the base end part side of a boom, and it is hard to clean. Moreover, such earth and sand can be easily removed if it is immediately removed when it falls, but over time, mud containing moisture adheres and becomes difficult to remove.

  The present invention has been devised in view of the above-described problems of the prior art, and aims to provide a technique that can immediately remove earth and sand that has fallen on a vehicle body using hot air after air cooling.

  For this reason, the hot air exhaust port structure for a construction machine according to the present invention has an exhaust port for discharging the hot air after air cooling, and the hot air discharged from the hot air exhaust port is located in a place where earth and sand etc. are easily deposited in the body of the construction machine. It is characterized by being arranged to face.

  In this invention, the hot air after air cooling is discharged | emitted toward the location where earth and sand etc. accumulate easily among the vehicle bodies of a construction machine. Therefore, even if soil or the like spills from the work tool, the soil or the like is immediately blown out of the vehicle body by the hot air. Even when mud containing moisture falls, it can be blown away after it is forcibly dried with hot air.

  For example, in a construction machine equipped with a work tool on the tip side of the boom, the place where earth and sand etc. are likely to accumulate is from the work tool when the boom is raised upward (mostly the work tool held with the arm). In many cases, earth and sand are spilled, and for this reason, the part of the vehicle body that is located within the turning range of the work tool can be mentioned. Among such locations, in particular, the boom base end is provided with a bracket, a shaft, and the like, and it is difficult to remove earth and sand spilled there. Therefore, it is more preferable that hot air is discharged there. That is, it is an optimum example if the structure of the present invention is applied to a place where earth and sand etc. are accumulated and it is difficult to remove the accumulated earth and sand.

  There may be a plurality of locations on the vehicle body where sediment or the like accumulates. However, if it is desired to remove any soil or the like at the plurality of locations with hot air, a plurality of discharge ports may be provided.

  As described above, according to the hot air exhaust port of the construction machine according to the present invention, the hot air after air cooling, which has been simply discharged in the past, is effectively used to immediately remove earth and sand that has fallen on the vehicle body. It will be possible. For this reason, the epoch-making effect that the labor of the cleaning work on the vehicle body can be reduced without adding a new cost can be obtained.

  A specific embodiment of the present invention will be described with reference to FIGS. This embodiment is an example applied to a small-sized (extra-small turning type) hydraulic excavator, where 1 is an upper swinging body, 2 is a lower traveling body, 3 is a boom, 4 is a driver's seat, 10 is Reference numeral 40 denotes a hot-air exhaust port, and a driver's seat partition wall side plate is shown.

  In the small hydraulic excavator of this embodiment, as shown in the drawing, the base end portion of the boom 3 is pivotally supported by a pin 30 via a bracket so as to be pivotable up and down at a location deep in the center of the upper swing body 1. A working tool (not shown) is attached to the end of the boom 3 via an arm 31 that is rotatable up and down. When the boom 3 is rotated upward and the arm is brought close so as to hold the work tool (a so-called chilled back state), the work tool is positioned substantially above the shaft support portion that becomes the base end portion of the boom 3.

  The upper swing body 1 has a hydraulic device, an engine, a heat exchanger, and the like arranged on its frame and covered with a cover, and is an exhaust port through which hot air is discharged after the heat exchanger is air-cooled 10 is also provided on any surface of the cover. In the present embodiment, as shown in the figure, hot air exhaust ports 10a and 10b are provided at two locations above and below the cover portion facing the rear of the base end portion of the boom 3. Both exhaust vents 10a and 10b are provided with scissors that adjust the wind direction. Is done. On the other hand, the flange of the lower exhaust port 10b is attached so that the tip thereof is inclined downward, and the hot air discharged therefrom is directed to the boom three-axis support part.

  When a small excavator such as this embodiment performs excavation work, the boom 3, arm 31, work tool is operated to lift the excavated earth and sand with the work tool, hold it, rotate the upper swing body 1, The earth and sand will be thrown away at the place. As described above, when the work tool is held, the work tool is positioned above the base end of the boom 3 and, for this reason, earth and sand etc. of the work tool will be spilled around the base end of the boom 3. Become. However, in this embodiment, since hot air after air cooling is blown from the hot air exhaust ports 10a, 10b toward the base end of the boom 3 and the top surface of the boom 3, even if earth or sand spills from the upper work tool, The earth and sand will be blown out of the vehicle body by the hot air. In addition, wet mud and mud containing water will fall near the base of the boom 3, but since hot air is constantly blown, it can be immediately dried and blown out of the vehicle after drying. Will be.

  As described above, the base end of the boom 3 is a deep part in the center of the upper swing body 1 and is a place where a bracket or the like is disposed and is very difficult to clean. By doing so, it is possible to prevent sediments and the like from accumulating in those places, so that almost no cleaning effort is required.

  Of course, the present invention is not limited to the above-described embodiment, and the construction machine to be applied may be of other types, and the place where the exhaust port is formed may be another place. .

  The present invention is applicable to various construction machines as long as the construction machine is provided with an exhaust port for discharging hot air after air cooling of the heat exchanger.

1 is a perspective view of a small hydraulic excavator provided with an embodiment according to the present invention. The small hydraulic shovel of FIG. 1 is shown, (a) is a side view, (b) is an enlarged view of A in (a).

Explanation of symbols

1 Upper swing body
2 Lower traveling body
3 Boom
4 Driver's seat
10 Hot air exhaust port

Claims (1)

  Hot air exhaust for construction machinery, characterized in that the exhaust port for discharging hot air after air cooling is arranged so that the hot air exhausted from it is directed to the place where earth and sand etc. tend to accumulate in the body of construction machinery Mouth structure.

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