JP5205404B2 - Partition structure in the engine room - Google Patents

Description

  The present invention relates to a partition structure in an engine room of a construction machine.

  Generally, a construction machine such as a hydraulic excavator includes a cooling unit such as a radiator or an oil cooler, and a fan that blows air to the cooling unit. In the engine room, air from the outside is sent to the cooling unit by the rotation of the fan to cool the cooling unit, and the cooling water and hydraulic oil of the engine are cooled by heat exchange in the cooling unit. The cooled cooling water and hydraulic oil are sent again to the engine and hydraulic equipment to cool the engine and operate the hydraulic equipment.

  In order to effectively cool such a cooling unit, a structure is known in which an engine room is divided into a cooling unit side and an engine side (see, for example, Patent Document 1). In the partition structure of Patent Document 1, a partition plate is provided in the engine room to partition the engine room into the engine side and the cooling unit side. With such a partition structure, the cooling efficiency of the cooling unit is enhanced by preventing the high-temperature air on the engine side from flowing back to the cooling unit side.

JP 2000-336694 A

  By the way, many auxiliary machines are accommodated in the engine room in addition to the engine and the cooling unit. These auxiliary machines need to be arranged in consideration of the relevance and maintainability of each other, but the space in the engine room is limited. For this reason, it is necessary to secure an arrangement space for the auxiliary equipment in the peripheral portion of the cooling unit as long as the cooling efficiency is not affected.

  However, in the partition structure of Patent Document 1, since the partition plate is provided beside the cooling unit, the arrangement of auxiliary machines around the cooling unit is limited, and the degree of freedom in the layout of auxiliary machines is not sufficient. There is.

  The objective of this invention is providing the partition structure which can improve the freedom degree of arrangement layout of the auxiliary machine in an engine room.

  The partition structure according to the present invention is a partition structure in an engine room of a construction machine, and is provided between a cooling unit in the engine room and a fan for cooling the cooling unit, and the cooling unit is provided in the engine room. A partition member that divides the engine unit into an engine side, and the partition member includes a bent portion that is bent at a side of the cooling unit, and an auxiliary machine arrangement space is formed by the bent portion.

  In the present invention, it is desirable that the partition member has a stepped portion that is stepped from the bent portion so as to surround the accessory arranged in the accessory arrangement space.

  In the present invention, the engine room is provided with a counterweight, and the counterweight has an accessory housing portion in which a portion facing the accessory placement space is cut out, and the bent portion includes the It is desirable to face the auxiliary equipment accommodating portion with an auxiliary equipment arrangement space in between.

  According to the partition structure of the present invention, the partition member that partitions the interior of the engine room into the cooling unit side and the engine side is provided, and the partition member has a bent portion that is bent beside the cooling unit, and is supplemented by the bent portion. Since the machine arrangement space is formed, it is possible to prevent interference between the auxiliary machine and the partition member arranged in the auxiliary machine arrangement space beside the cooling unit. Therefore, since the auxiliary machine can be arranged beside the cooling unit, the degree of freedom of the layout of the auxiliary machine in the engine room can be improved.

  In the present invention, when the partition member has a stepped portion that is stepped from the bent portion so as to surround the accessory disposed in the accessory placement space, the accessory and cooling that should be disposed from the partition member to the engine side Even if the auxiliary machines to be arranged on the unit side are arranged in the vicinity of the cooling unit, these auxiliary machines can be divided into the engine side and the cooling unit side. Therefore, since the auxiliary machine can be arranged in the vicinity of the cooling unit regardless of the heat resistance characteristic of the auxiliary machine, the degree of freedom in the layout of the auxiliary machine can be further improved.

  In the present invention, the counterweight provided in the engine room has an accessory housing portion in which a portion facing the accessory placement space is cut out, and the bent portion accommodates the accessory device across the accessory placement space. When facing the part, a larger accessory arrangement space can be ensured between the bent part and the accessory storage part.

The side view which shows the construction machine which concerns on one Embodiment of this invention. The top view which shows the inside of the turning body mounted in the construction machine. The perspective view which shows the partition member for cooling provided in the inside of a turning body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a hydraulic excavator (construction machine) 1 according to an embodiment of the present invention. The hydraulic excavator 1 includes a traveling device 2, a work implement 3, and a revolving body 4.
The traveling device 2 is provided at the lower part of the revolving structure 4 and supports the revolving structure 4 so as to be rotatable in the horizontal direction. The traveling device 2 includes a pair of left and right crawler traveling bodies 21.

  The work machine 3 includes a boom 31 that is pivotally supported in a vertically swingable manner with respect to a main frame that constitutes the revolving structure 4, an arm 32 that is swingably provided at the tip of the boom 31, and a tip of the arm 32. A boom cylinder 34 that drives the boom 31, an arm cylinder 35 that drives the arm 32, and a bucket cylinder 36 that drives the bucket 33.

  The working machine 3 is supplied with pressure oil from a hydraulic circuit provided inside the revolving structure 4, and the cylinders 34 to 36 are expanded and contracted by the pressure oil to move the bucket 33 in the vertical direction, The posture can be changed, and various operations such as excavation work, leveling work, and sediment loading work can be performed.

  The swivel body 4 includes a work machine 3 provided on the front side, a cab 41 provided substantially at the center, an engine 42 provided on the rear side, and a hydraulic pressure driven by the engine 42 although not shown. It is equipped with a hydraulic circuit including a pump. An opening / closing type engine hood 43 that is rotatable about a support shaft P along the left-right direction of the revolving structure 4 is provided at the rear portion of the revolving structure 4.

  As shown in FIG. 2, the revolving structure 4 has an engine room 44 therein, and the engine room 44 is surrounded by a central partition 45, left and right side walls 46, a counterweight 47, and an engine hood 43 (see FIG. 1). ). In the engine room 44, the engine 42 is accommodated by being supported by the center frame 48, and a fan 5 for cooling the cooling unit 6 is provided in the vicinity of the engine 42.

  The fan 5 is connected to an output shaft of a fan motor (not shown) using the engine 42 as a drive source, and is driven to rotate by the fan motor. The fan 5 is covered with a fan shroud 51, and openings 511 and 512 are provided on surfaces of the fan shroud 51 that face each other. A cooling unit 6 is provided on the opposite side of the engine 42 with the fan 5 and the fan shroud 51 interposed therebetween.

  The cooling unit 6 includes a radiator 61, an aftercooler 62, and an oil cooler 63. In the cooling unit 6, the radiator 61, the aftercooler 62, and the oil cooler 63 are concentrated in one place in the engine room 44, and are arranged in a straight line along the front-rear direction of the swivel body 4. With such an arrangement, the installation space for the cooling unit 6 is reduced and the maintainability of the cooling unit 6 is improved.

A fuel filter 7 and an oil filter 8 are provided in the accessory arrangement space S beside the fan 5 and the cooling unit 6. The auxiliary machine arrangement space S provided between the fan 5 and the cooling unit 6 and the engine hood 43 faces the counterweight 47, and the counterweight 47 is cut out at a portion facing the auxiliary machine arrangement space S. And an auxiliary equipment accommodating portion 471. A larger accessory arrangement space S is secured by the accessory storage portion 471.
In addition, although not shown in the drawings, auxiliary equipment having low heat resistance such as a battery and an electronic device is disposed in the space on the opposite side of the engine 42 from the cooling unit 6.

  A partition member 9 is provided between the fan 5 and the cooling unit 6 to partition the engine room 44 into the engine 42 side and the cooling unit 6 side. The partition member 9 is connected to the central partition wall 45 and extends from the central partition wall 45, a bent portion 92 bent from the connection portion 91, and further bent from the bent portion 92 to connect portion 91. The connecting part 91, the bent part 92, and the stepped part 93 are formed as a continuous integrally molded product.

  As shown in FIG. 3, the connecting portion 91 is provided with a through hole 911 at a position corresponding to the opening 511, 512 of the fan shroud 51, and the through hole 911 and the opening 511, 512 of the fan shroud 51, By this, the cooling unit 6 side and the engine 42 side are communicated. The outside air that has flowed into the engine room 44 from a vent hole (not shown) provided on the side wall 46 on the cooling unit 6 side cools the cooling unit 6 through the periphery of the cooling unit 6 by the rotation of the fan 5, and then passes through the through hole. 911 and openings 511 and 512, and flows into the engine 42 side.

  Further, as shown in FIG. 3, the opposite sides of the stepped portion 93 are inclined so as to approach the other side toward the end, and the stepped portion 93 is closed when the engine hood 43 is closed. Does not interfere with the engine hood 43. Further, on the other side of the stepped portion 93, a notch 931 with a corner notched is provided.

  As shown in FIG. 2, in such a partition member 9, the connecting portion 91 is located between the fan 5 and the cooling unit 6, and the bent portion 92 is bent toward the cooling unit 6, so that the cooling unit 6 and the filter 7 are arranged. , 8 is arranged in the engine room 44 so as to be located between the two. Further, the stepped portion 93 is arranged in a state of being bent from the bent portion 92 to the counterweight 47 side, and the counterweight 47 enters the cutout portion 931.

  That is, the partition member 9 extends from the central partition wall 45, bends beside the cooling unit 6 to form an accessory arrangement space S, and further surrounds the filters 7 and 8 arranged in the accessory arrangement space S. It extends in the engine room 44 so that its end portion is placed on the counterweight 47 when folded.

  Although not shown, the gap between the partition member 9 and the engine hood 43 is sealed by an elastic member such as a sponge provided in the partition member 9 or the engine hood 43, and the high temperature on the engine 42 side is high. Air is prevented from flowing into the cooling unit 6 side through the gap between the partition member 9 and the engine hood 43.

In the partition structure as described above, since the partition member 9 partitions the interior of the engine room 44 into the engine 42 side and the cooling unit 6 side, high-temperature air on the engine 42 side can be prevented from flowing back to the cooling unit 6 side. .
Moreover, since the partition member 9 has the bent part 92 bent from the connection part 91, it can avoid that the partition member 9 interferes with the auxiliary machine arrangement | positioning space S beside the fan 5 and the cooling unit 6. FIG. Therefore, an auxiliary machine can be arranged between the fan 5 and the cooling unit 6 and the engine hood 43.

  Further, since the partition member 9 has a stepped shape by the bent portion 92 and the stepped portion 93, a plurality of auxiliary members having different heat resistance characteristics such as filters 7 and 8 and a battery are provided beside the fan 5 and the cooling unit 6. Even when the machines are arranged side by side, these auxiliary machines can be divided into the engine side and the cooling unit side according to the heat resistance characteristics. Therefore, each auxiliary machine can be arranged so that the operation of the auxiliary machine is performed smoothly.

  In addition, in the counterweight 47, the portion facing the bent portion 92 is cut out to form the auxiliary device accommodating portion 471. Therefore, the space surrounded by the bent portion 92 and the stepped portion 93 and the auxiliary device accommodating portion 471 With this space, it is possible to secure a larger accessory arrangement space S.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the partition member 9 is formed as an integrally molded product in which the connecting portion 91, the bent portion 92, and the stepped portion 93 are continuous. You may comprise the connection part 91, the bending part 92, and the step-fold part 93 integrally.

  In the said embodiment, although the bending part 92 bent the partition part 9 from the connection part 91 to the cooling unit 6 side, it is not restricted to this. In short, the bent portion 92 only needs to be bent so as to form the accessory arrangement space S in the vicinity of the fan 5 and the cooling unit 6. For example, the bent portion 92 is bent toward the engine 42 side. May be.

  Moreover, in the said embodiment, although the partition member 9 had the stepped part 93, it is not restricted to this. For example, when the auxiliary machine to be arranged on the engine 42 side is arranged side by side along the counterweight 47 from the side of the fan 5 and the cooling unit 6 on the side opposite to the engine 42, the folding unit 93 is not provided and the folding unit 93 is not provided. The curved portion 92 may be extended to the counterweight 47 or the side wall 46.

  In the said embodiment, although the partition member 9 was provided between the fan 5 and the cooling unit 6, it is not restricted to this. The partition member 9 only needs to be provided at a position that partitions the engine room 44 into the engine 42 side and the cooling unit 6 side. For example, the partition member 9 may be provided between the engine 42 and the fan 5.

  In the said embodiment, although the partition structure was used in the hydraulic excavator 1, it is not restricted to this. The point is that the engine room 44 may be divided into the engine 42 side and the cooling unit 6 side. For example, a hybrid excavator using an engine and an electric motor, a dump truck, a wheel loader, etc. It may be used for construction machines.

  The present invention can be used for hydraulic excavators and hybrid excavators, and also for other construction machines having a cooling unit in an engine room.

  DESCRIPTION OF SYMBOLS 1 ... Hydraulic excavator (construction machine), 5 ... Fan, 6 ... Cooling unit, 9 ... Partition member, 44 ... Engine room, 47 ... Counterweight, 92 ... Bending part, 93 ... Step folding part, 471 ... Auxiliary equipment accommodation Part, S ... Auxiliary equipment placement space.

Claims (3)

A partition structure in the engine room of a construction machine,
A partition member provided between a cooling unit in the engine room and a fan for cooling the cooling unit, and partitioning the engine room into the cooling unit side and the engine side;
The partition structure, wherein the partition member has a bent portion that is bent at a side of the cooling unit, and an auxiliary equipment arrangement space is formed by the bent portion. In the partition structure according to claim 1,
The partition structure has a stepped portion that is stepped from the bent portion so as to surround the accessory arranged in the accessory placement space. In the partition structure according to claim 1,
The engine room is provided with a counterweight,
The counterweight has an accessory storage part in which a portion facing the accessory placement space is cut out,
The said bending part is facing the said auxiliary machine accommodating part on both sides of the said auxiliary machine arrangement | positioning space. The partition structure characterized by the above-mentioned.

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