JP2000273903A - Turning working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turning working machine capable of facilitating the maintenance work of a radiator, a battery and a hydraulic oil tank. SOLUTION: An engine 15 in the rear section of a swivel base 3 is placed sideways, a blow-out radiator 34 is placed to the right side of the engine 15, an operator's seat 17 is placed to the front side thereof, a battery 37 is placed to a blow-out side of the radiator 34,a hydraulic oil tank 38 is placed to the front side thereof, and the engine 15, radiator 34, battery 37 and hydraulic oil tank 38 are covered with a hood 16. Then, the hood 16 is separately formed of a hood part for covering the engine 15 and a cover body 16C for covering the radiator 34, battery 37 and hydraulic oil tank 38, and the front and rear parts of the cover body are pivoted in an openable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning work machine such as a backhoe.

[0002]

2. Description of the Related Art A turning work machine of this kind is disclosed in
As disclosed in Japanese Patent Publication No. 1939, an engine at the rear of the swivel is arranged sideways, a blow-out radiator is arranged on the right side of the engine, a driver's seat is arranged on the front side, and a hydraulic oil tank is arranged on the front side of the radiator. , A fuel tank and a battery, and an engine, a radiator, a battery, and a hydraulic oil tank are covered with a bonnet, and an intake port is formed at a front portion of a right side of the bonnet that covers the radiator, the battery, and the hydraulic oil tank. The air sucked from the mouth is sucked by the radiator through the battery and the hydraulic oil tank, and is discharged from the rear portion of the right side of the bonnet.

[0003]

In the prior art, the radiator is disposed on the right side of the engine with the engine turned sideways, so that the driver's seat can be disposed relatively behind without being obstructed by the radiator having a wide front and rear width. By opening the right side of the hood, the radiator, the battery and the hydraulic oil tank can be maintained, but the right side of the bonnet can be removed and attached via fasteners. The maintenance is mainly performed by opening and closing a lid provided on an upper portion of a right side portion of the bonnet, so that an opening range is narrow and maintenance work is difficult.

Further, the radiator has to suck air laterally from the front side thereof, so that ventilation is not possible and the cooling effect of the engine is low. An object of the present invention is to provide a turning work machine capable of solving such a problem of the related art. According to the present invention, a bonnet portion for covering an engine is separated from a bonnet portion for covering an engine, and a cover body for covering a radiator, a battery, and a hydraulic oil tank. Accordingly, an object of the present invention is to provide a turning work machine capable of facilitating maintenance work.

[0005] The present invention also provides a heat-balancing path in which air sucked from the vicinity of a hydraulic pump on the left side of the engine is sucked into the radiator through the engine and discharged from the right side of the bonnet through the battery. It is an object of the present invention to provide a swivel working machine capable of improving the performance.

[0006]

A first concrete means for solving the problems in the present invention is to arrange an engine 15 at the rear of the swivel 3 in a horizontal direction, and to provide a blow-out radiator 34 on the right side of the engine 15. The driver's seat 17 is arranged on the front side, and the battery 3 is
7, a hydraulic oil tank 38 is disposed on the front side, and the engine 15, the radiator 34, the battery 37, and the hydraulic oil tank 38 are covered with a bonnet 16, and the bonnet 16 is covered with a bonnet portion that covers the engine 15, a radiator 34, and a battery. 37 and a cover body 16C that covers the hydraulic oil tank 38, and the cover body 16C is pivotally supported at the front or rear to be openable and closable.

[0007] Thus, maintenance of the radiator 34, the battery 37, and the hydraulic oil tank 38 can be easily performed at once by simply opening the cover 16C. A second specific means for solving the problem in the present invention is to arrange the engine 15 at the rear of the swivel 3 sideways, to provide a blow-out radiator 34 on the right side of the engine 15, a hydraulic pump 33 on the left side, The driver's seat 17 is arranged on the front side, the battery 37 is arranged on the outlet side of the radiator 34, the hydraulic oil tank 38 and the control valve 39 are arranged on the front side, and the engine 15, radiator 34, battery 37, hydraulic pump 33, The oil tank 38 and the control valve 39 are covered with the bonnet 16, and the air sucked from the vicinity of the hydraulic pump 33 is sucked into the radiator 34 through the engine 15, and is passed through the battery 37 to the ventilation path 41 which is discharged from the right side of the bonnet 16. It is forming.

[0008] Thus, the suction and discharge of air by the radiator 34 are performed without difficulty, and the engine 15, the radiator 34, the battery 37, and the like are effectively cooled.
Good heat balance. A third concrete means for solving the problem in the present invention is a fuel tank 40 in front of the hydraulic pump 33 in addition to the first or second concrete means.
And an air intake port 42 is formed in the left front portion of the swivel 3, and a suction path 43 communicating from the air intake port 42 to the ventilation path 41 near the hydraulic pump 33 through the fuel tank 40 is formed. It is.

As a result, it is possible to improve the heat balance and reduce the noise leaking from the engine room 31. A fourth specific means for solving the problem in the present invention is to support the driver's seat 17 at the front side of the bonnet 16 via a suspension device 32 in addition to any one of the first to third specific means. It is that you are. Thereby, the livability is improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 shows a small back turning type backhoe 1 exemplified as a turning work machine.
Is an upper body 5 having a crawler traveling device 2 and a swivel 3
And an excavator 4. The crawler traveling device 2 includes left and right side frames 7 of the track frame 6.
A rotatable support of a driving wheel 8, a driven wheel 9 and a plurality of rolling wheels 10 around front and rear portions of the vehicle, and a rubber or iron crawler 11 wrapped around these, and the driving wheel 8 is driven by a traveling drive source such as a hydraulic motor. It is configured to be driven.

The track frame 6 has a swivel 3 mounted on the upper part thereof via a swivel bearing 12 so as to be swivelable about a swivel axis X, and a dozer 13 at the front thereof so as to be able to move up and down. An engine 15, a bonnet 16, a driver's seat 17, a steering device 18, and the like are mounted on the swivel 3, and an upper body 5 is formed by these components. Is mounted so as to be swingable about the vertical axis. The excavator 4 pivotally supports each base end of the boom 21 and the boom cylinder 22 on a swing bracket 20 supported on the bracket 19 via a longitudinal axis, and pivotally supports an arm 23 at the tip of the boom 21. The arm cylinder 24 allows the arm 23 to swing.
And the bucket cylinder 26 enables scooping and dumping operations.

1 to 5, a weight (counter weight) 30 is provided at a rear portion of the swivel 3 and the weight 3
The engine 15 is mounted on the front side of the engine room 31 and a hood 16 is provided so as to surround an engine room 31 in which the engine 15 is arranged.
Are provided via the mounting table and the suspension device 32. In the engine room 31, the excavator 4
, The engine 15 is arranged sideways (the crankshaft is in the left-right direction), and the multiple hydraulic pump 3
3 and a radiator 34 is disposed on the right side.

Although the radiator 34 has the widest width in the front-rear direction, the radiator 34 is located on the right side with respect to the driver's seat 17, so that it does not hinder the arrangement of the driver's seat 17, and the driver's seat 17 is as close to the engine 15 as possible. It can be arranged so that the space between the driver's seat 17 and the steering device 18 can be increased, and thus the arrangement of the suspension device 32 is also possible. The engine 15 and the hydraulic pump 33
Frame 35 formed of a pipe material or the like so as to straddle
An air filter and other devices are mounted on the support frame 35, and a partition plate 44 is provided on the front side of the engine 15. Further, a rear standing frame (lops) on the rear side of the driver's seat 17 is provided upright.

Radiator fan 34a of radiator 34
Is a front blow-out type, which sucks air from an air hole (not shown) on the left side of the bonnet 16 or the lower part of the swivel base 3, passes through the vicinity of the hydraulic pump 33 on the left side, and outputs the engine room 3.
1 and cool the engine 15 and blow hot air to the bonnet 1
6 is formed with a ventilation path 41 that discharges outward from the right side. Reference numeral 45 in FIG. 1 denotes a suction pipe, which is arranged on the ventilation path 41 above the engine 15.

A ventilation path 4 is provided on the right side of the radiator 34.
1, a battery 37 is disposed, and a hydraulic oil tank 38 and a control valve 39 are disposed in front of the battery 37. Fuel tank 4
Numeral 0 is disposed inside the left side of the swivel 3. An air intake port 42 is formed at the left front portion of the swivel base 3, and a suction path 43 that passes through the inside to the fuel tank 40 is formed. The suction path 43 is connected to the ventilation path 41 near the hydraulic pump 33. Communicating. The suction passage 43 takes in cooling air in cooperation with an air hole formed in the lower part of the swivel 3 near the hydraulic pump 33. However, by forming the suction passage 43, the air hole can be made smaller. Engine noise from the air holes can be reduced.

The hood 16 is provided in the engine room 3.
1, a hood front 16A located on the front side of the hood 1, an openable / closable hood rear part 16B located on the rear side for inspection inside the engine room 31, and a hood adjacent to one side of the hood front 16A and the hood rear 16B. It is divided into a side part (cover body) 16C, and each part is formed of synthetic resin (or sheet metal). Bonnet front 16
A is fixed to the swivel 3 and the support frame 35, rises at the front side of the partition plate 44 and covers the front and upper part of the engine 15, and the left side protrudes to the left of the driver's seat 17 and covers the upper part of the fuel tank 40.

The bonnet rear portion 16B has a front upper portion pivotally supported by a support frame 35 via a hinge 47 so as to be freely opened and closed, and includes an engine 15, a hydraulic pump 33, and a radiator 34.
By covering and opening the rear half, these maintenances can be performed. Bonnet side 16
C has a front lower portion pivotally supported by a hinge 48 so as to be openable and closable, and not only covers the hydraulic oil tank 38 and the control valve 39, but also covers the radiator 34 and the battery 37. Is exposed so that maintenance can be performed at once.

The bonnet side portion 16C may be pivotally supported at the rear upper portion thereof via a hinge so as to be openable and closable at the front, and an air intake port may be formed at the front portion thereof. The air sucked from the front side is
Alternatively, the gas may flow to the radiator 34 via the control valve 8 and the control valve 39. The lower portions of the left side surface of the hood front portion 16A and the right side surfaces of the hood rear portion 16B and the hood side portion 16C bulge outward from the upper portion thereof via the step portion 49, and bulge substantially along the outer periphery of the swivel base 3. Outgoing band is formed.

That is, the weight 30 of the bonnet 16
The portion adjacent to the upper part of the bulge bulges from the upper side by the step difference of the step portion 49, and this bulge portion is a mountain-shaped ridge 50, and at least one valley portion 51 is formed on the mountain-shaped ridge 50. As a result, a plurality of narrow mountain-shaped ridges are formed with the valley portion 51 interposed therebetween. This Yamagata ridge 5
By forming 0, the bending strength of the bonnet 16 is improved, and not only the occurrence of chatter due to vibration from the engine 15 can be reduced, but also the appearance is accented and the design is excellent.

The present invention is not limited to the above embodiment, but can be variously modified. For example,
The backhoe 1 may be a standard turning type, a micro turning type, or the like, and may be a type in which a cabin surrounding the driver's seat 17 is mounted on the swivel 3 instead of the rear standing frame 36. When the cabin is mounted, the hinge 47 for pivotally supporting the bonnet rear portion 16B is disposed behind the cabin rear wall. The bonnet 16 may be formed by integrally molding a bonnet front portion 16A and a bonnet rear portion 16B, and a driver's seat 17 may be mounted thereon. Alternatively, only the bonnet rear portion 16B is formed of synthetic resin, and a chevron ridge 50 is formed thereon. It may be formed.

FIG. 6 exemplifies a mounting structure of the radiator 34. A radiator body 56 is fixed to a bracket 53 fixed to the swivel table 3 via a vertical cushion 54 and a fastener 55. A partition plate 59 is attached via front and rear cushions 57U, 57D and fasteners 58, and an upper portion of the partition plate 59 is connected to the support frame 35 via a support 60 so as to sandwich the radiator body 56. Is screwed to the fan shland 61. Further, a protective cover 62 is attached to the fan shland 61, an extended water inlet 63 is provided on the protective cover 62, and is connected to the water inlet 64 of the radiator body 56 via a hose 65.

In the prior art, the radiator body 56
The partition plate 59 is directly fixed to the radiator main body 56, and the anti-vibration in the front-rear direction is supported by the support frame 35 via the support 60. The durability of the radiator body 56 may be reduced by the front-rear vibration. By providing the front and rear cushions 57U and 57D as shown in FIG.
6 can be improved in durability. Further, the conventional fan shland 61 is directly mounted on the radiator main body 56, and the radiator main body 56 is oscillated by the front-rear vibration.
And the front and rear cushions 57U, 5U
7D, and the fan shland 61 is partitioned by the partition plate 59.
To prevent the radiator body 56 from moving toward the radiator fan 34a due to the longitudinal vibration of the radiator body 56, the interference can be prevented.

Further, since the conventional extension water injection cap 63 is connected to the support frame 35, the extension water injection cap 63 is
However, by providing the extension water inlet 63 on the protection cover 62, the configuration of the radiator 34 from the bracket 53 to the protection cover 62 and the extension water inlet 63 is assembled. And the assembly work becomes easier,
In addition, the position of the extended water inlet 63 of the protective cover 62 can be set to a position where water can be easily injected.

[0024]

According to the present invention described above, the cover 16C covering the radiator 34, the battery 37 and the hydraulic oil tank 38 can be opened and closed by pivotally supporting the front or rear part. The maintenance of the radiator 34, the battery 37, and the hydraulic oil tank 38 can be easily performed at one time only by opening. Air sucked from the vicinity of the hydraulic pump 33 passes through the engine 15 and is sucked into the radiator 34,
6. Since the air is discharged from the right side, the suction and discharge of air by the radiator 34 are performed without difficulty, and the engine 15, the radiator 34, the battery 37, and the like can be effectively cooled, and the heat balance can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view of an upper body showing an embodiment of the present invention.

FIG. 2 is a rear view of the upper body.

FIG. 3 is a right side view of the upper body.

FIG. 4 is a left side view of the upper body.

FIG. 5 is an overall side view of the backhoe.

FIG. 6 is an exploded perspective view of the radiator.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 backhoe (turning machine) 3 turntable 5 upper body 15 engine 16 bonnet 16C bonnet side (cover body) 17 driver seat 31 engine room 32 suspension device 33 hydraulic pump 34 radiator 35 support frame 37 battery 38 hydraulic oil tank 39 control Valve 40 Fuel tank 41 Ventilation path 42 Air intake 43 Suction path 50 Yamagata ridge

Claims (4)

[Claims] 1. An engine at the rear of the swivel is arranged sideways, and a blow-out radiator is provided on the right side of the engine.
A driver seat is disposed on the front side, a battery is disposed on the radiator outlet side, and a hydraulic oil tank is disposed on the front side.The engine, the radiator, the battery, and the hydraulic oil tank are covered with a bonnet, and the bonnet covers the engine. And a cover body that covers the radiator, the battery, and the hydraulic oil tank, and the cover body is pivotally supported at a front portion or a rear portion to be freely opened and closed. 2. An engine at the rear of the swivel is arranged sideways, and a blow-out radiator is provided on the right side of the engine.
Hydraulic pump on the left side, driver's seat on the front side,
A battery is disposed on the radiator outlet side, and a hydraulic oil tank and a control valve are arranged on the front side.The engine, the radiator, the battery, the hydraulic pump, the hydraulic oil tank, and the control valve are covered with a bonnet, and air sucked from near the hydraulic pump. A turning work machine characterized in that a ventilation path is formed in which the air passes through the engine, is sucked into the radiator, and is discharged from the right side of the bonnet through the battery. 3. A fuel tank is disposed in front of the hydraulic pump, an air intake port is formed in a left front portion of the swivel, and an intake path communicating from the air intake port to a ventilation path near the hydraulic pump via the fuel tank. The bonnet structure of a turning work machine according to claim 1 or 2, wherein the bonnet structure is formed. 4. The turning work machine according to claim 1, wherein the driver's seat is supported on a front side of a bonnet via a suspension device.