JP2005280477A - Engine compartment structure of revolving work machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent leakage of heated air and noise of an engine compartment to a driver's seat side by improving air-tightness of the engine compartment, and preventing inverse suction of the heated air in the engine compartment in cooling a radiator. <P>SOLUTION: The revolving work machine 1 comprises the engine compartment 34 with an engine 23 transversely arranged provided on a rear part of a swivel base 4, a dividing wall 29 for partitioning the driver's seat 14 provided on a front side of the engine compartment 34, the radiator 25, a radiator fan 24, and a fan shroud 45 arranged on one side of left and right sides of the engine 23, a hydraulic pump 26 arranged on the other side of the left and right sides, a fixing cover 30 for covering a front part and an upper part of the engine compartment 34, and a rear part cover 31 for covering the rear part so as to be freely opened and closed. Partitioning walls 46, 47 are provided so as to project around the fan shroud 45. A partitioning member 48 is connected on an upper side of the partitioning wall 47 on an upper side of the fan shroud 45. Outer peripheral edges of the dividing walls 46, 47 and the partitioning member 48 come in contact with the fixing cover 30 and rear part cover 31 so as to be in a state for preventing fan wind from distributing. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an engine room structure of a turning work machine.

In a conventional swivel work machine such as a construction machine, a swivel base is provided on a traveling device so as to be able to swivel around a swivel axis, a work device is provided at the front end of the swivel base, and an engine chamber is provided at the rear of the swivel base. A driver's seat is provided on the front side of the engine compartment, the engine is mounted horizontally in the engine compartment, a radiator fan and a hydraulic pump are provided on the left and right sides of the engine, and a radiator is provided on the outside of the radiator fan, Some have an air cleaner provided at the top of the engine (for example, Patent Documents 1 and 2).
JP 2003-205981 A JP 2003-74085 A

In the engine room structure of the conventional swing working machine of Patent Documents 1 and 2, the air tightness between the engine side and the radiator side and the air tightness of the outer peripheral portion between the radiator fan and the radiator are insufficient. Therefore, the hot air in the engine room flows out to the radiator suction side, and this hot air is mixed with the outside air (cooling air) and sucked into the engine room during the cooling operation of the radiator by the radiator fan. The cooling efficiency was reduced.
An object of the present invention is to prevent reverse suction of hot air in the engine compartment during cooling of the radiator and prevent leakage of hot air and noise in the engine compartment to the driver's seat.

In order to solve the above-mentioned problem, the present invention provides an engine room 34 in which the engine 23 is disposed horizontally at the rear part of the swivel 4, and a partition wall 29 that partitions the driver's seat 14 on the front side of the engine room 34, A radiator 25, a radiator fan 24, and a fan shroud 45 are arranged on one of the left and right sides of the engine 23, and a hydraulic pump 26 is arranged on the other of the left and right sides, and a fixed cover 30 covering the front and upper portions of the engine chamber 34 and a rear portion are covered. In the swing working machine 1 provided with the rear cover 31,
Partition walls 46 and 47 are provided in an overhanging manner around the fan shroud 45, and a partition member 48 is provided above the partition wall 47 on the upper side of the fan shroud 45, so that the partition walls 46 and 47 and the partition member are provided. The outer peripheral edge of 48 is brought into contact with the fixed cover 30 and the rear cover 31 in a fan air flow blocking state.

Further, according to the present invention, the plurality of hydraulic hoses 52 of the hydraulic pump 26 led out from the engine compartment 34 to the driver's seat 14 side are inserted into the partition wall 29 that partitions the engine compartment 34 and the driver's seat 14 side. It is inserted through the hole 53 and is kept airtight through the clamp member 55. This improves the airtightness between the engine compartment 34 and the driver's seat 14, and the hot air and noise in the engine compartment 34 are operated. It is possible to prevent leakage to the seat 14 side.
Further, according to the present invention, the air introduction hose 57 of the air cleaner 56 provided in the upper part of the engine chamber 34 is led out through the partition member 48 on the upper side of the fan shroud 45 from the engine 23 side to the radiator 25 side. This prevents the hot air in the engine chamber 34 from leaking from the penetrating portion of the air introduction hose 57 to the suction side of the radiator 25, thereby reducing the cooling efficiency of the radiator 25. Can be prevented.

  According to the present invention, the engine chamber 34 side and the suction side of the radiator 25 can be partitioned airtightly by the partition walls 46 and 47 projecting around the fan shroud 45 and the upper partition member 48. Can be prevented from flowing out to the suction side of the radiator 25. As a result, when the radiator 25 is cooled by the radiator fan 24, the hot air in the engine chamber 34 is prevented from being sucked back together with the outside air, and the cooling efficiency of the radiator 25 can be prevented from being lowered.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 8 to 9, the turning work machine 1 of the present invention is rotated around the turning axis X in the vertical direction via a turning bearing on the upper part of a traveling device 3 having a pair of left and right crawler traveling bodies 2. A turntable 4 is mounted movably, and a work device 5 is provided at the front end of the turntable 4.
The working device 5 includes a swing bracket 6 attached to the front end of the swivel base 4 so as to be swingable left and right, a boom 7 connected to the swing bracket 6 so as to be swingable up and down, and swinging up and down at the tip of the boom 7. The excavation work device includes an arm 8 that is movably connected and a bucket 9 that is pivotally connected to the tip of the arm 8. The swing bracket 6, the boom 7, the arm 8, and the bucket 9. Are operated by hydraulic cylinders 10, 11, 12, etc., respectively.

An engine 23 and the like, which will be described later, are mounted on the rear part of the swivel base 4 and are covered with a bonnet 13, and on the front side, as shown in FIGS. 1 and 3, the driver's seat 14 and the traveling device 3 are operated. A control unit 17 having a lever 15 and an operation lever 16 of the working device 5 is provided. The control unit 17 is surrounded by a cabin 18 provided at the front part on the swivel base 4.
As shown in FIGS. 3 to 4, a plate-like base frame 19 is provided at the bottom of the swivel base 4, and a counterweight 20 is provided at the rear end of the base frame 19. The front part is covered with a cover body 21. Side protectors 22 that protect the left and right corners of the rear end of the swivel base 4 are disposed on both the left and right sides of the counterweight 20 as shown in FIGS.

As shown in FIGS. 1 and 2, an engine 23 is mounted horizontally on the upper surface of the rear portion of the base frame 19. The engine 23 is disposed immediately in front of the counterweight 20, a radiator fan 24 and a radiator 25 are disposed on one of the left and right sides (right side) of the engine 23, and a hydraulic pump 26 is disposed on the other side (left side). The engine 23 is a water-cooled type, and the cooling water is supplied to the radiator 25 via a cooling water hose 62 by a circulation pump 61 driven to rotate by the engine 23 as shown in FIG.
As shown in FIG. 1, a mounting bracket 27 for mounting the work device 5 is provided at the front end portion of the base frame 19 so as to protrude forward, and a pair of left and right vertical ribs 28 </ b> L and 28 </ b> R are provided from the mounting bracket 27. It extends in a rearward spread (substantially C-shaped). A partition wall 29 extending in the left-right direction is erected in the middle part of the base frame 19 in the front-rear direction.

As shown in FIG. 1, a fuel tank 41, a battery 42, a hydraulic oil tank 43, and the like are arranged on the front side of the partition wall 29 and on the left and right sides (right side) of the base frame 19. On the left side, hydraulic valves and other equipment are installed.
The bonnet 13 mainly covers the outside of the engine 23, the radiator 25, and the like. As shown in FIGS. 2 to 4, the bonnet 13 includes a fixed cover 30 that covers the front and upper parts, and a rear part that covers the rear parts. A cover 31, a left side cover 32 covering the left side surface, and a right side cover 33 covering the right side surface are formed, and an engine chamber 34 is formed in the hood 13. The front and upper front of the engine chamber 34 are covered with a fixed cover 30 fixed to the base frame 19. The one side chamber (right chamber) where the fuel tank 41, the battery 42, the hydraulic oil tank 43, etc. are arranged and the other side chamber (left chamber) where the hydraulic valves and other devices are arranged are surrounded by left and right side covers 32, 33 and the rear side of the engine compartment 34 is covered with a rear cover 31 that can be freely opened and closed. The hydraulic oil is supplied to the hydraulic pump 26 from the hydraulic oil tank 43 through the hydraulic hose 63.

  As shown in FIGS. 3 and 4, a support frame 35 is provided in the bonnet 13. The support frame 35 includes a rear leg portion 36, a pair of left and right front leg portions 37, and upper ends of the leg portions 36 and 37. The lower end of the rear leg portion 36 and the front leg portion 37 is connected to the support bracket 44 and the partition wall 29 in the engine chamber 34. It is attached and fixed to the base frame 19 or the like through a part of it. The support plate 38 has a horizontally long strip shape, and the left and right sides thereof are supported by the base frame 19 via legs 36 and 37.

The rear lower end of the cabin 18 is mounted on the front portion of the bonnet 13 and the upper surface of the upper cover 30. Specifically, as shown in FIGS. 3 and 4, a support plate 38 is provided on the front side and the back side of the upper surface of the upper cover 30, and the rear portion of the cabin 18 is connected to the support plate 38 via a mount rubber or the like. It has come to be.
3 to 4, the support plate 38 supports the front upper portion of the rear cover 31 through a hinge member 39 so as to be rotatable around the support shaft 40, and the rear cover 31 has an upper front end ( The support shaft 40) can be flipped upward with the fulcrum as a fulcrum.

As shown in FIG. 1, the engine 23 is disposed laterally in front of the counterweight 20, and the radiator 25 is disposed on the right side of the engine 23 and in front of the counterweight 20. As shown in FIGS. 1 and 2, a radiator fan 24 is provided between the engine 23 and the radiator 25. The radiator fan 24 is a suction type and is driven to rotate by the power of the engine 23 so as to suck outside air from the radiator 25 side toward the engine 23 side.
A fan shroud 45 is provided around the radiator fan 24. As shown in FIGS. 1 to 3, the fan shroud 45 has partition walls 46 and 47 formed in a protruding shape. Then, as shown in FIG. 2, a partition member 48 is provided on the upper side of the upper partition wall 47, and the outer peripheral edges of these partition walls 46, 47 and the partition member 48 are fixed to the fixed cover 30 and the rear cover 31. In addition, the fan is prevented from flowing through a seal member 65 such as rubber. The partition wall 47 is also brought into contact with the radiator support bracket 64 raised from the base frame 19 via a seal member 65 such as rubber. As shown in FIG. 3, the radiator support bracket 64 is raised from the base frame 19 with a width in the front-rear direction substantially equal to the partition walls 46 and 47 around the fan shroud 45.

  As shown in FIG. 5, the fan shroud 45 includes a first cylindrical portion 49 that protrudes toward the suction side of the radiator 25 and a second cylindrical portion 50 that protrudes toward the engine 23 side. Reference numeral 50 denotes a circular opening 51 that communicates in the left-right direction. The radiator fan 24 is housed in the second tubular portion 50, the radiator 25 is disposed on the outer side of the first tubular portion 49, and the outer peripheral portion of the inner surface of the radiator 25 is outside the first tubular portion 49. All the outside air that is in contact with the end portion and sucked by the radiator fan 24 circulates from the right to the left with respect to the radiator 25, and is guided to the radiator fan 24 side through the circular opening 51 of the fan shroud 45. Yes. Therefore, by driving the radiator fan 24, the outside air is efficiently sucked from the right side of the radiator 25 in FIG. 1 to the engine 23 side. The outside air passes through the radiator 25 from the right side to the left side, and the first tubular portion 49 and Through the circular opening 51 of the second tubular portion 50, the air enters the engine chamber 34. At this time, the fan shroud 45 sucks outside air from between the radiator fan 24 and the radiator 25, or the outside air flows outside. It functions so as not to escape.

Further, the partition walls 46 and 47 projecting around the fan shroud 45 and the outer peripheral edge of the partition member 48 provided on the upper side are fixed to the fixed cover 30 and the rear cover 31 that cover the front and upper portions of the engine chamber 34. By abutting in the air flow blocking state, air (high temperature) in the engine chamber 34 is prevented from flowing out from the peripheral portion of the fan shroud 45 to the radiator 25 suction side. Accordingly, the radiator 25 can efficiently suck only low temperature outside air.
The hydraulic pump 26 is driven to rotate by the engine 23 and is disposed on the side of the engine 23 opposite to the radiator fan 24 (left side). As shown in FIGS. 2, 6, and 7, the hydraulic pump 26 has a plurality of hydraulic hoses 52 led out from the engine compartment 34 to the driver's seat 14 side. A single insertion hole 53 formed in the lower portion of the partition wall 29 that partitions the engine compartment 34 and the driver's seat 14 side is held substantially airtight via a pair of rubber clamp members 55 having a plurality of clamp portions 54. Yes.

  As shown in FIGS. 2 to 4, an air cleaner 56 is disposed in the upper portion of the engine chamber 34, and an air introduction hose 57 is connected to the air cleaner 56, and the air introduction hose 57 is connected to the fan shroud 45. The upper partition member 48 is led out from the engine 23 side to the radiator 25 side and is hermetically held in the penetrating portion. As shown in FIG. 1, a short cylindrical connection cylinder 58 is fixed to the partition member 48 by welding or the like, and the connection cylinder 58 is attached to the connection cylinder 58 as shown in FIG. The air introduction hose 57 divided into two is fitted on the radiator 25 side, and the hose clamps 59 and 60 are fastened and fastened.

As shown in FIGS. 3 and 5, the cooling water hose 62 of the radiator 25 is divided into two at the position of the upper and lower partition walls 47 of the fan shroud 45, the circulation pump 61 side and the radiator 25 side, and penetrates the upper and lower partition walls 47. It is kept airtight in the state.
In addition, as shown in FIG. 3, a separate grip 15a is attached to the upper end of the traveling control lever 15 provided in the control section 17 of the driver's seat 14, but this grip 15a is conventionally attached for traveling. A small-diameter portion is provided at the upper end of the operation lever 15, a male screw portion is formed on the small-diameter portion, a grip 15a is assembled to the male screw portion, and the assembly is adjusted and fixed with a nut, and a rubber cover is fixed to the grip 15a and the lever 15 Since the cover is fitted at the joint with the upper end of the screw, the number of parts is large, the assembly adjustment of the parts is necessary, and a tool such as a spanner is required for tightening the nuts. However, in this embodiment, as shown in FIG. 3, the conventional formation of the small-diameter portion and the engraving of the external thread portion are not required, the nut and the rubber cover are not required, and the grip 15a is attached to the lever. It was a plug-in at the upper end of the 15. This eliminates the adjustment of assembly when the grip 15a is assembled to the operation lever 15, eliminates the need for a tool, and shortens the assembly time.

  The configuration of the embodiment of the present invention is as described above. According to the above embodiment, the radiator fan 24 includes the fan shroud 45 around the periphery, and the fan shroud 45 is provided with the partition walls 46 and 47 extending in the periphery. A partition member 48 is connected to the upper side of the upper partition wall 47, and a fixed cover 30 and a rear cover 31 that cover the front and upper portions of the engine chamber 34 with the outer peripheral edges of the partition walls 46 and 47 and the partition member 48. Therefore, the engine chamber 34 side and the suction side of the radiator 25 are partitioned in an airtight manner. Thus, hot air in the engine chamber 34 is prevented from flowing out to the suction side of the radiator 25. As a result, when the radiator fan 24 is driven to cool the radiator 25, it is possible to prevent the intake of hot air in the engine chamber 34 along with the outside air (reverse suction), and to prevent the cooling efficiency of the radiator 25 from being lowered. Can do.

  The radiator fan 24 is housed in the second tubular portion 50 of the fan shroud 45, the radiator 25 is disposed outside the first tubular portion 49, and the outer peripheral portion of the inner surface of the radiator 25 is the first. Since it is in contact with the outer end portion of the tubular portion 49, all the outside air sucked by the radiator fan 24 is circulated from the right to the left with respect to the radiator 25 and passes through the circular opening 51 of the fan shroud 45. It can be led to the fan 24 side. Therefore, by driving the radiator fan 24, outside air can be efficiently sucked from the right side of the radiator 25 to the radiator 25 side, and the cooling efficiency of the radiator 25 can be improved.

The hydraulic pump 26 has a plurality of hydraulic hoses 52 led out from the engine compartment 34 to the driver's seat 14 side, and the plurality of hydraulic hoses 52 are compartments that partition the engine compartment 34 and the driver's seat 14 side. Since one insertion hole 53 formed in the wall 29 is airtightly held through a pair of clamp members 55 having a plurality of clamp portions 54, the airtightness between the engine compartment 34 and the driver's seat 14 is improved. It is possible to prevent the hot air and noise in the engine compartment 34 from leaking to the driver's seat 14 side.
Further, the air introduction hose 57 connected to the air cleaner 56 leads out the partition member 48 on the upper side of the fan shroud 45 from the engine 23 side to the radiator 25 side, and is kept airtight at the through portion. The hot air in the engine chamber 34 can be prevented from flowing out from the holding portion of the air introduction hose 57 to the radiator 25 side.

  The embodiment of the present invention has been described above, but the present invention is not limited to this embodiment, and can be implemented with various modifications within the scope of the claims. For example, the structure for attaching the air introduction hose 57 to the partition member 48 and the structure for attaching the cooling water hose 62 to the partition wall 47 may be other configurations that can maintain airtightness.

  INDUSTRIAL APPLICABILITY The present invention can be used for a turning work machine such as a backhoe in which an engine is mounted on a turning table provided on a traveling device so as to be rotatable around a turning axis.

It is a schematic plan view which fractures | ruptures the principal part of the turntable which shows one Embodiment of this invention. It is a rear view of the principal part of the turntable. It is a right view of the same swivel stand principal part. It is a left view of the pivot table main part. It is a top view of a radiator part. It is a top view of a hydraulic hose attachment part. It is a front view of the hydraulic hose attachment part. It is a side view of the whole turning work machine. It is a rear view of the whole working machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating work machine 2 Crawler traveling body 3 Traveling device 4 Rotating stand 5 Working device 14 Driver's seat 15 Operation lever 18 Cabin 23 Engine 24 Radiator fan 25 Radiator 26 Hydraulic pump 29 Partition wall 30 Fixed cover 31 Rear cover 32 Right side cover 33 Left side Cover 34 engine chamber 45 fan shroud 52 hydraulic hose 55 clamp member 56 air cleaner 57 air introduction hose

Claims (3)

An engine room (34) in which the engine (23) is placed horizontally is provided at the rear part of the swivel base (4), and a partition wall (29) that partitions the driver seat (14) is provided on the front side of the engine room (34). The radiator (25), the radiator fan (24) and the fan shroud (45) are arranged on the left and right sides of the engine (23), and the hydraulic pump (26) is arranged on the left and right sides, respectively, In the turning work machine (1) provided with a fixed cover (30) covering the upper part and a rear cover (31) covering the rear part so as to be freely opened and closed,
A partition wall (46) (47) is provided in an overhanging manner around the fan shroud (45), and a partition member (48) is continuously provided above the partition wall (47) on the upper side of the fan shroud (45). The outer peripheral edges of the partition walls (46), (47) and the partition member (48) are in contact with the fixed cover (30) and the rear cover (31) in a fan air flow blocking state. Engine room structure of a swivel work machine.   A partition wall that partitions the plurality of hydraulic hoses (52) of the hydraulic pump (26) led out from the engine compartment (34) to the driver seat (14) side from the engine compartment (34) and the driver seat (14) side The engine room structure for a swivel working machine according to claim 1, wherein the engine chamber structure is inserted through an insertion hole (53) formed in (29) and is airtightly held via a clamp member (55). The air introduction hose (57) of the air cleaner (56) provided in the upper part of the engine chamber (34) is connected to the partition member (48) on the upper side of the fan shroud (45) from the engine (23) side to the radiator (25) side. 2. The engine room structure for a swing work machine according to claim 1, wherein the engine room structure is led out to the inside and held airtight at the through portion.

Images