JP2003064724A - Turning work machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To facilitate maintenance of a hydraulic oil tank, vehicle equipment, a fuel tank, and the like, and to secure the capacity of each tank. SOLUTION: An engine 2 is provided at a rear side of a vertical axis of a turning body 4.
0, and a hydraulic oil tank 24, at least one vehicle device 25, and a fuel tank 23 are arranged in front and rear on one of the left and right sides of the vertical axis. The periphery of the hydraulic oil tank 24, at least one vehicle device 25, and the fuel tank 23 are covered with a side cover 28 having an open top.
8 is closed by a side upper cover 29 so as to be openable and closable. The upper portion of the hydraulic oil tank 24, the upper portion of the at least one vehicle device 25, and the upper portion of the fuel tank 23 are disposed gradually lower from the rear side to the front side, and these upper portions are located on the outer wall side of the side cover 28 in side view. Opening edge 28A
The opening edge 28A is gradually formed from the rear side to the front side so as to be substantially exposed from the front.

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 Generally, a backhoe is provided with a revolving machine body on a traveling device so as to be revolvable around a vertical axis center. A hydraulic oil tank and a fuel tank are arranged in front and rear, a periphery of the engine, the hydraulic oil tank, and the fuel tank is covered with a cover, and a driver's seat is arranged above the engine and on the side of the tank. The cover is roughly divided into a cover for covering an engine room in which an engine is arranged and a cover for covering a tank room in which a hydraulic oil tank and a fuel tank are arranged. The engine room cover and the tank room cover are substantially L-shaped in a plan view. It is formed continuously.

A hydraulic oil tank and a fuel tank are arranged in the tank room, and at least one vehicle device such as a battery and a valve is also arranged in the tank room. The side cover is openably and closably closed by the side upper cover.

[0004]

In the above prior art, the existence of the hydraulic oil tank, the vehicle equipment and the fuel tank may impair the capacity or hinder the maintenance, and the upper part of each member. Since the height of the tank varies, maintenance may be difficult unless the cover is formed so that the side surface of the tank room can be largely opened. It is an object of the present invention to provide a swing working machine capable of solving the problems of the conventional art.

According to the present invention, the upper portions of the hydraulic oil tank, the vehicle equipment and the fuel tank are arranged gradually lower from the rear side to the front side,
Further, by forming the opening edge gradually lower from the rear side to the front side so that the upper portions thereof are substantially exposed from the opening edge of the side cover in a side view, it is possible to facilitate maintenance and secure the capacity of each tank. It is an object of the present invention to provide a swiveling work machine that does.

[0006]

A first specific means for solving the problem in the present invention is to provide a turning machine body 4 on a traveling device 3 so as to be rotatable around a vertical axis center, and a vertical axis of the turning machine body 4 The engine 20 is mounted on the rear side of the center, and the hydraulic oil tank 24, at least one vehicle device 25, and the fuel tank 23 are arranged in front and back on one side of the center of the vertical axis. The periphery of one vehicle device 25 and the fuel tank 23 is covered by a side cover 28 having an open upper portion, and the opening of the side cover 28 is openably and closably closed by a side upper cover 29. The upper part of 24, the upper part of at least one vehicle device 25, and the upper part of the fuel tank 23 are arranged gradually lower from the rear side to the front side, and these upper parts are provided with the side cover 28 in a side view.
The opening edge 28A is formed to be gradually lower from the rear side to the front side so as to be substantially exposed from the opening edge 28A on the outer wall side.

Thus, when the side upper cover 29 is opened, the upper portion of the hydraulic oil tank 24, the upper portion of at least one vehicle device 25 and the upper portion of the fuel tank 23 are closed.
8 is substantially exposed from the opening edge 28A, the maintenance thereof can be easily performed, and the tank capacities of the hydraulic oil tank 24 and the fuel tank 23 can be secured. A second concrete means for solving the problems in the present invention is, in addition to the first concrete means,
A fuel tank 23 is arranged in front of the hydraulic oil tank 24, at least one vehicle device 25 is arranged above the fuel tank 23, and the fuel tank 2 is arranged in front of the vehicle device 25.
That is, the injection port 23A is formed by projecting the upper front part of 3 upward.

As a result, the tank capacities of the hydraulic oil tank 24 and the fuel tank 23 are secured, and then the vehicle equipment 25
The height of the upper part of the fuel tank can be made appropriate, and the fuel can be easily supplied from the injection port 23A. The third concrete means for solving the problems in the present invention is, in addition to the first or second concrete means,
The upper surface of the side upper cover 29 is formed so as to be gradually lowered from the rear side to the front side. As a result, the cover of the tank room can be made into a slant nose, and the front side visibility can be improved.

A fourth concrete means for solving the problems in the present invention is that in addition to any one of the first to third concrete means, the side upper cover 29 is provided on the side of the side cover 28 on the longitudinal axis side. It is supported on the upper part of the side wall so as to be openable and closable about the longitudinal axis. This facilitates opening and closing of the side upper cover 29. A fifth concrete means for solving the problems in the present invention is, in addition to any one of the first to fourth concrete means, a support for mounting at least one vehicle device 25 on the front surface of the hydraulic oil tank 24. That is, the table 51 is attached.

As a result, the vehicle equipment 25 can be easily arranged at an appropriate position.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 7, a turning work machine 1 exemplified as a rear small turning type backhoe includes a running device 3 having a pair of left and right crawler running parts 2, and a turning machine body 4 rotatably provided on the running device 3. And an excavation device 5 mounted on the turning machine body 4, and is mainly configured. The crawler traveling unit 2 of the traveling device 3 supports driving wheels, driven wheels, and rolling wheels on both left and right sides of the track frame 7,
A crawler 14 formed of an elastic material such as rubber or a metal is wound around these, and a driving wheel is driven by a hydraulic motor 8 so that the crawler 14 circulates.

At the center of the upper surface of the track frame 7, the turning machine body 4 is mounted via a turning bearing 9. The swivel body 4 can be swung about a swivel axis 6 which is a vertical axis center by a swivel motor 11 arranged therein. The swivel body 4 is located on the swivel axis 6.
The swivel joint 10 is disposed between the vehicle and the traveling device 3. A dozer device 13 which is lifted and lowered by a hydraulic cylinder is pivotally mounted on the front portion of the track frame 7. The turning machine body 4 has the excavator 5 mounted on the front end of the machine frame 16 and the weight 17 for balancing the weight of the excavator 5 on the rear end thereof. An engine 20, a radiator 21 and a hydraulic pump 22 are arranged at the rear part.

A fuel tank 23 and a hydraulic oil tank 24 are provided on the right side of the body frame 16 on the right side of the turning axis 6.
In addition to the tanks such as the above, at least one vehicle device such as a battery and a valve (the battery 25 in the embodiment) is mounted. A driver's seat 18 is disposed on the left side of the tanks and above the front of the engine 20 at a position overlapping with the turning axis 6, and a substantially rear half of the driver's seat 18 overlaps with the engine 20 in the front-rear direction. There is. The center of the driver's seat 18 is offset to the left of the turning axis 6.

The upper and front sides of the engine room where the engine 20 and the like are arranged are covered with a main cover 26, the rear of the engine room is covered with a bonnet cover 27, and a fuel tank 23, a hydraulic oil tank 24, a battery 25, etc. The tank room thus arranged is surrounded by a side cover 28, and an upper opening of the side cover 28 is closed by a side upper cover 29. The engine room and the tank room are internally connected to each other, and are substantially L-shaped in a plan view. As shown in FIGS. 1 and 3, the excavation device 5 is supported by a support bracket 31 that protrudes forward from the front surface of the turning machine body 4 and can swing about the vertical axis of the support bracket 31 (vertically). A swing bracket 35 mounted so that it can freely swing about its axis, a boom 36 pivotally connected to this swing bracket 35 so that it can swing about its left and right axes, and it can swing about this boom 36 about its left and right axes. An arm 37 pivotally connected to the arm 37 and a bucket 38 pivotally connected to the arm 37 so as to be swingable around the left and right axis.

The swing bracket 35 is swing-oscillated by a swing cylinder 40 mounted in the swing body 4, and the boom 36 is vertically swung by a boom cylinder 41 arranged along the front side of the lower portion of the boom 36. The arm 37 is dynamically driven, and the arm cylinder 42 arranged along the upper upper side of the boom 36 drives the arm 37 back and forth to swing, and the bucket 38 is arranged along the front side (upper side) of the arm 37. The bucket cylinder 43 is adapted to be scooped and dump driven.

As shown in FIG. 6, the fuselage frame 16
Is a base member 30 made of a plate material forming the bottom of the base member 30.
And a support bracket 31 made of precision cast steel, which is provided at the front part of the base member 30 and which mounts and supports the excavator 5
And a pair of left and right vertical ribs 32 provided upright on the base member 30 so as to extend rearward from the support bracket 31.
And a horizontal rib 33 which is erected so as to cross the front-rear midway portion of the base member 30 in the left-right direction. The support bracket 31, the vertical ribs 32, and the horizontal ribs 33 are fixed to the base member 30 by welding and integrated.

A mounting base 45 for mounting the engine 20 is provided on the rear end of the base member 30 and the lateral ribs 33. The mounting board 45 on the front side is fixed to the left and right middle portions of the horizontal rib 33 by welding or the like, and the mounting table 45 on the rear side is fixed to the rear end of the base member 30 by welding or the like. The engine 20 is mounted laterally (the crankshaft is in the left-right direction) on the front-rear mounting base 45 via a mount rubber or the like. A rear end of the vertical rib 32 on the left side is connected to the rear mounting base 45, and a left side portion of the weight 17 is provided with a connecting portion 45a connected by a bolt or the like. The right side portion of the weight 17 is provided with a connecting portion 32a that is connected by a bolt or the like, whereby the support bracket 31 and the weight 17 are connected via the vertical rib 32.

As shown in FIGS. 1 and 7, the hydraulic pump 22 is directly connected to the left side of the engine 20 and the engine 2 is connected to the right side.
A radiator fan 21A driven by 0 is provided,
A radiator 21 is arranged on the right side of the radiator 21. Figure 1,
In 2, 5, and 8, a fuel tank 23 is provided on the front side of the radiator 21 and on the right side of the body frame 16, and a hydraulic oil tank 24 is provided behind it, and a battery 25 is provided above the fuel tank 23. And the inlet 23A of the fuel tank 23 is located in front of the battery 25.

The upper part of the hydraulic oil tank 24, the battery 2
5 and the upper part of the fuel tank 23 are arranged gradually lower from the rear side to the front side in that order.
Has the highest height in order to secure the capacity, and the upper oil supply port 24B is at a high position, but there is little problem because it rarely supplies hydraulic oil. 44 is a hydraulic oil tank 2
4 shows a liquid level gauge provided on the side surface of No. 4. The fuel tank 23 is located on the front side of the hydraulic oil tank 24, and its main body portion is located at a low position. However, the fuel tank 23 projects upward from the front upper portion to form the injection port 23A, which is best suited for frequent fuel supply. It can be done at height.

The battery 25 is usually arranged on the same installation surface as the fuel tank 23 and the like, but here, it is arranged on the front side of the hydraulic oil tank 24 and above the fuel tank 23, and the oil supply port of the hydraulic oil tank 24 is provided. Lower than 24B, fuel tank 2
It is made higher than the injection port 23A of No. 3 to make it easier to see the level of the battery fluid. Above the engine 20, the hydraulic pump 22, and the radiator fan 21A, and in some cases, the radiator 2
The main cover 26 that covers the front and the left side of the engine room including 1 is fixed to the body frame 16.
The bonnet cover 27 covering the rear of them is the main cover 2
It is pivotally supported at the upper rear part of 6 through a pivot support 46 and can be opened and closed with respect to the main cover 26.

The right side of the radiator 21, the fuel tank 23,
A side cover 28 that covers the hydraulic oil tank 24 and the battery 25 is fixed to the body frame 16, and an upper portion of the side cover 28 is opened, so that the opening can be opened and closed. A side upper cover 29 is pivotally connected to the side cover 28. An opening edge 28A (side cover 28) of the side cover 28 forming the opening.
The upper edge of the outer surface of the battery 2 is formed to be gradually lower from the rear side to the front side, and in a side view, the upper portion of the hydraulic oil tank 24 and the battery 2 which are also arranged gradually lower from the rear side to the front side.
The upper part of the fuel tank 5 and the upper part of the fuel tank 23 can be substantially exposed from the opening edge 28A.

Therefore, when the side upper cover 29 is opened, the oil supply port 24B of the hydraulic oil tank 24, the liquid level of the battery 25 and the injection port 23A of the fuel tank 23 become apparent from the outside, and the maintenance can be facilitated. Further, since the hydraulic oil tank 24 is at the last position and has the highest height, a sufficient hydraulic oil capacity can be secured, and the fuel tank 23 wraps under the battery 25, so that the fuel capacity is sufficient. Can be secured. The upper surface of the side upper cover 29 is formed so as to gradually lower from the rear side to the front side so as to substantially correspond to the opening edge 28A, the front portion is located at a lower position than the rear portion, and has a side view substantially arc shape.

That is, the tank cover formed by the side cover 28 and the side upper cover 29 has a so-called slant nose shape when viewed from the front, which is a so-called slant nose shape, so that the front side visibility can be improved. In addition, since the side upper cover 29 corresponds to the stair-like arrangement relationship between the upper portion of the hydraulic oil tank 24, the upper portion of the battery 25, and the upper portion of the fuel tank 23, the wasted space between them is reduced, and The upper right part can be made compact both in the front-back direction and in the vertical direction.

As shown in FIGS. 8 and 9, the side upper cover 29 is disposed above the side wall 28B on the longitudinal axis side of the side cover 28 through a pair of front and rear pivotal support members 49A, and substantially in the longitudinal axis. It is supported so that it can be freely opened and closed, and the outer wall of the side cover 28 (opening edge 2
8A forming side) A locking tool 49 provided between the upper part and the upper part
It can be locked via B. The side wall 28B is formed higher than the opening edge 28A. The hydraulic oil tank 24 and the fuel tank 23 are attached and supported to the support bracket 31 and the vertical ribs 32 of the machine body frame 16.

Of the covers, the main cover 26 and the side upper cover 29 are made of synthetic resin, and the other covers are made of sheet metal. Generally, synthetic resin has a lower thermal conductivity than sheet metal, but its manufacturing cost is high. So driver's seat 1
8. A cover portion close to the driver in the inward / outward direction and / or the up / down direction, which is easy to create a feeling of touch or heat to the driver as seen from above, is made of synthetic resin. The far cover part is made of sheet metal,
The cost can be reduced as much as possible without giving the driver discomfort.

Although both the main cover 26 and the side upper cover 29 are made of synthetic resin, only one of the covers, which is easier to touch, may be made of synthetic resin.
As shown in FIGS. 2 and 6, the right-side vertical rib 32 has a branch portion 32A that extends laterally outward in the front-rear halfway portion, and is supported at the proximal end portion and the tip end portion of the branch portion 32A, respectively. A stand 47 is provided. Then, the left and right support bases 47L,
An L-shaped mounting tool 24A provided in the lower portion of the hydraulic oil tank 24 is mounted on the upper surface of 47R and is fixed by a fastener such as a bolt.

At least one of the left and right supports 47L and 47R may be provided on the vertical rib 32, and the other may be provided on the base member 30. A mounting piece 48 protruding laterally is integrally formed with the support bracket 31, and the lower end portion of the support member 50 is fixed to the mounting piece 48 by a fastener such as a bolt. The support member 50 is made of a plate material and has a mounting piece 4
A battery base (support base) 51 having a substantially L-shape in a side view is connected to the upper end of the battery base 5 extending obliquely rearward and upward from 8 (extended portion 51a).

The battery base 51 has a vertical wall portion 51.
A is attached to the front surface of the hydraulic oil tank 24 by fasteners such as bolts, and the battery 25 is attached to the lateral wall portion 51B.
Is mounted and is pressed down from above by a pressing tool 51C. The hydraulic oil tank 2
4, the lower side of which is supported by support bases 47L and 47R,
The upper side is supported by the support bracket 31 via the support member 50.

The support member 50 has a lower end portion substantially L in front view.
It has a V-shaped receiving bracket 52, and the lateral wall portion 52B of the receiving bracket 52 supports the fuel tank 23 by engaging it from the lower side with a recess 23A formed inside the lower portion of the fuel tank 23. Holds the posture. A vertical wall portion 52A of the receiving bracket 52 is provided with a hook tool 53 having a substantially U-shape in a side view, and one end of a holding band (support member) 54 is detachably locked to the hook tool 53. ing.

The holding band 54 is composed of a metal strip or the like, and extends rearward while being wound around the circumferential grooves 23B on the front and outer surfaces of the fuel tank 23, and is provided at the rear end thereof. The fixing bolt 54A penetrates through the mounting plate provided on the hydraulic oil tank 24 or the right support 47R and is fixed by screwing a fixing nut. Therefore,
The hydraulic oil tank 24 and the fuel tank 23 have support bases 47L, 47 for the support bracket 31 and the vertical ribs 32.
The base member is attached and supported via the R, the support member 50, the holding band 54, and the like, and compared with a case where another bracket or the like is erected from the base member 30 to support the tanks 23 and 24. The space above 30 is less likely to erode, which contributes to downsizing of the swivel body 4.

The swing cylinder 40 of the excavator 5 has its rear end pivotally supported by a support plate 57 formed on the branch portion 32A of the vertical rib 32, and the base member 30 is supported by the support bases 47L and 47R.
Of the hydraulic tank 24 and the fuel tank 2
It passes through the concave portion 23A of No. 3 and projects forward. Here, unlike the hydraulic oil tank 24, the fuel tank 23 is not arranged so as to float from the base member 30, but a recess 23D is formed in the lower portion thereof so as to avoid interference with the swing cylinder 40. And the center of gravity can be lowered, and the lowermost surface can be stably placed on the base member 30.

Further, the fuel tank 23 is in the form of bulging upward in front of the battery 25, whereby the capacity is increased, and the injection port 2 is further provided in the bulging portion 23C.
By forming 3A, this injection port 23A is arranged at a position as high as possible, and it is easy to refuel from the inspection port on the upper surface of the side bonnet 28. As shown in FIGS. 2, 4, and 7, a support frame body 58 is provided upright on the rear portion of the machine body frame 16 so as to straddle the engine 20.
8 has an upper frame 58A made of a plate material that is long in the left-right direction and three left and right ends of the upper frame 58A and three legs 58B extending frontward or rearward downward from a midway portion, and the lower end of each leg 58B. Are attached and fixed to the left support base 47L, the weight rear mounting base 45, and the left and right side portions of the horizontal rib 33 by bolts, respectively.

The opening / closing pivot support 46 of the bonnet cover 27 is attached to the upper frame 58A of the support frame 58, and the base of the column 59A of the sunshading device 59 (see FIG. 3) is also attached. ing. As shown in FIGS. 1 and 3, a steering floor 60 is provided on the left side of the front portion of the turning machine body 4 (a portion excluding the bonnet cover 27),
The driver's seat 18, step portion 62,
A driving unit having a steering lever 63, a pedal 64, etc. is provided.

A sunshade device 59 is provided above the driver's seat 18.
A guard member 65 that also functions as a handrail is provided upright in the front. The driver's seat 18 is provided on a seat base 67, and operation levers 68 are arranged on the left and right. The present invention is not limited to the above-mentioned embodiment, but can be modified in various ways. For example, instead of the rear small turning type backhoe that does not significantly project from the traveling device 3 even when the rear part of the swivel body 4 turns, a standard type backhoe or boom that greatly projects from the traveling device 3 when the rear part of the swivel body 4 turns. It is possible to configure it as a super-small turning type backhoe or the like in which the pivot portion is located near the turning axis 6 of the turning machine body 4.

The center of the driver's seat 18 may be arranged on the right side of the turning axis 6 and the tank room may be arranged on the left side of the turning machine body 4.

[0036]

According to the present invention described in detail above, when the side upper cover 29 is opened, the upper portion of the hydraulic oil tank 24, the upper portion of at least one vehicle device 25 and the upper portion of the fuel tank 23 are covered with the side cover 28. Substantially exposed from the opening edge 28A on the outer wall side, they can be easily maintained, and the tank capacities of the hydraulic oil tank 24 and the fuel tank 23 can be secured.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a right side view of the turning machine body.

FIG. 3 is an overall side view of a turning work machine.

FIG. 4 is a left side view of the turning machine body.

FIG. 5 is a front view of a tank room.

FIG. 6 is a plan view of a base member.

FIG. 7 is a rear view of the engine room.

FIG. 8 is a side view of a side cover and a side upper cover.

FIG. 9 is a sectional front view of a side cover and a side upper cover.

[Explanation of symbols]

1 swivel work machine 3 traveling devices 4 turning machine 5 excavation equipment 6 Turning axis (vertical axis) 16 airframe 20 engine 21 radiator 22 Hydraulic pump 23 Fuel tank 23A inlet 24 hydraulic oil tank 24A mounting tool 24B Filling port 25 Battery (vehicle equipment) 26 Main cover 27 Bonnet cover 28 Side cover 28A opening edge 29 side upper cover 51 Support stand (battery stand)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroo Nakata             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F-term (reference) 2D015 BA00 CA03                 3D038 CA12 CB09 CD02

Claims (5)

[Claims] 1. A swivel body is provided on a traveling device so as to freely swivel around a vertical axis center, an engine is mounted on the rear side of the vertical axis center of the swivel body, and a hydraulic oil tank is provided at least on one side of the vertical axis center. One vehicle device and a fuel tank are arranged in front and rear, and a periphery of the hydraulic oil tank, at least one vehicle device and the fuel tank is covered with a side cover having an open top, and the opening of the side cover is provided. Is openably and closably closed by a side upper cover, and the upper portion of the hydraulic oil tank, the upper portion of at least one vehicle device, and the upper portion of the fuel tank are arranged gradually lower from the rear side to the front side, and these upper portions are viewed from the side. In the swivel work machine, the opening edge is formed to be gradually lower from the rear side to the front side so as to be substantially exposed from the opening edge on the outer wall side of the side cover. 2. A fuel tank is arranged on the front side of the hydraulic oil tank, at least one vehicle device is arranged on the upper side of the fuel tank, and a front upper part of the fuel tank is projected upward on the front side of the vehicle device to inject an inlet. The swivel work machine according to claim 1, wherein the swivel work machine is formed. 3. The swivel work machine according to claim 1, wherein the upper surface of the side upper cover is formed to be gradually lower from the rear side to the front side. 4. The side upper cover is supported on an upper portion of a side wall on the longitudinal axis side of the side cover so as to be openable and closable about the longitudinal axis. Swivel work machine. 5. The swivel work machine according to claim 1, wherein a support base for mounting at least one vehicle device is attached to a front surface of the hydraulic oil tank.