JP2003056006A - Slewing work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a slewing machine compact by reducing the number of parts in the slewing machine and securing an extra space. SOLUTION: A fuel tank 23 and a hydraulic oil tank 24 are attached to and supported by a supporting bracket 31 and a longitudinal rib 32 constituting a slewing machine body 4.

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 working machine of this type is provided with a turning machine body on a crawler traveling device so as to freely turn around a vertical axis.
This swivel body is provided with a support bracket for supporting the excavator at a front portion of a base member that constitutes the bottom portion thereof, a weight at a rear portion of the base member, and a longitudinal bracket extending in the front-rear direction between the weight and the support bracket. The ribs are provided upright, and the engine and engine auxiliary equipment, the control valve, the control device, the fuel tank, the hydraulic oil tank, etc. can be attached to the base member via a bracket or the like.

[0003]

In recent years, a small backhoe capable of traveling and excavating in narrow alleys in urban areas has been actively developed, and therefore, the turning machine body is made compact and the turning radius is made small. Various attempts have been made. However, since equipment such as a fuel tank and a hydraulic oil tank on the revolving machine body are erected from the base member by mounting a bracket or a support stand on the support member,
As the number of parts increases, a space for installing the bracket and the like must be secured on the base member, which hinders miniaturization.

It is an object of the present invention to reduce the number of parts and secure a space on the base member by supporting the tank by utilizing the constituent members of the turning machine body, and to contribute to downsizing of the turning machine body.

[0005]

The present invention takes the following technical means in order to achieve the above object. That is, according to the present invention, a swivel body is provided on a traveling device so as to swivel about an axis in the vertical direction, and the swivel body is provided on a base member that forms a bottom portion thereof and on a front portion of the base member. The support bracket for supporting the excavation device, the weight provided on the rear portion of the base member, and the vertical rib provided between the weight and the support bracket are provided. The tank is mounted and supported on both or one of the ribs.

By adopting such a structure, the supporting bracket and / or the vertical ribs constituting the swinging machine body are used as a supporting member for mounting the tank, and it is necessary to separately provide a supporting member for the tank on the base member. This reduces the number of parts, secures a space on the base member, and contributes to downsizing of the turning machine body. In the above structure, a support base is provided on the vertical ribs, the first tank is supported on the support base, and a support member for supporting the second tank is provided between the first tank side and the support bracket. Is recommended.

Further, according to the present invention, the hydraulic actuator of the excavator is connected to a control valve provided in the swing body by a hydraulic hose, and a guide member for guiding the hydraulic hose is provided on the base member. The guide member also serves as a fitting for a floor member that covers the upper portion of the revolving machine body. According to this, since it is possible to mount the floor member on the upper part of the turning machine using the guide member of the hydraulic hose, it is not necessary to separately install a floor member mounting tool from the base member. The number of points can be reduced and the space on the base member can be secured.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, a turning work machine 1 exemplified as a rear small turning type backhoe is a traveling device 3 having a pair of left and right crawler traveling bodies 2, and a revolving machine body provided on the traveling device 3 so as to be freely rotatable. 4 and an excavation device 5 mounted on the turning machine body 4, and is mainly configured. The traveling device 3 is provided with driving wheels, driven wheels, and the like on both left and right sides of the track frame 7, and elastic crawlers such as rubber are wound around these to form the crawler traveling body 2. The crawler traveling body 2 is circulated and circulated by a traveling drive body 8 including a hydraulic motor connected to driving wheels.

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 is swivelable around a vertical swivel axis 6 by a swivel drive body 11 composed of a hydraulic motor disposed inside the swivel body 4. A swivel joint 10 is arranged between the turning machine body 4 and the traveling device 3 on the turning axis 6. A dozer 13 is pivotally attached to the front end of the track frame 7.
3 is moved up and down by a dozer driving body 14 formed of a hydraulic cylinder.

The turning machine body 4 is constructed by providing a weight 17 for balancing the weight with the excavator 5 at the rear portion of the machine body frame 16 and providing cover bodies 18L, 18R at the left and right side portions and the front portion. Also, weight 17
Inside the body frame 16 surrounded by the cover bodies 18L and 18R, the engine 20, the radiator 21,
Hydraulic pump 22, fuel tank 23, hydraulic oil tank 24,
A battery 25 and the like are installed, and these devices are the bonnet 2
It is covered with 6, 27 and 28. As shown in FIG.
The machine body frame 16 includes a base member 30 made of a plate material that forms a bottom portion thereof, a support bracket 31 provided at a front portion of the base member 30, on which the excavator 5 is mounted and supported, and from the support bracket 31. It has a pair of left and right vertical ribs 32 standing upright on the base member 30 so as to extend rearward, and horizontal ribs 33 standing upright 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.

The support bracket 31 is made of precision cast steel, and as shown in FIG.
31B and left and right wall portions 31C and 31C connecting the left and right side portions of the upper and lower wall portions 31A and 31B. As shown in FIG. 2, the excavator 5 includes a swing bracket 35 that is swingably attached to a support bracket 31 about a vertical axis and a swing bracket 35 that is swingably connected to the swing bracket 35 about a horizontal axis. Boom 36 and an arm 37 connected to the boom 36 so as to be swingable around the left and right axis.
And a bucket 38 connected to the arm 37 so as to be swingable about the left and right axis.

The swing bracket 35 is swingably driven by a swing driving body 40 provided in the swinging machine body 4, and the boom 36 is swung by a boom driving body 41 arranged along the lower front side of the boom 36. Driven, the arm 37 is swingably driven by an arm driving body 42 arranged along the upper upper side of the boom 36, and the bucket 38 is arranged along the front side (upper side) of the arm 37. It is adapted to be swingably driven by a driving body 43. Each of the driving bodies 40 to 43 is composed of a hydraulic cylinder.

As shown in FIG. 3, a mounting base 45 for mounting the engine 20 is provided on the rear end portion 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 on the front-rear mounting base 45 via mount rubber or the like. The rear mounting table 45 is connected to the rear ends of the left vertical ribs 32, and the left side of the weight 17 is provided with a connecting portion 45a connected by a bolt or the like. The end portion is provided with a connecting portion 32a to which the right side portion of the weight 17 is connected by a bolt or the like, whereby the support bracket 31 and the weight 17 are connected to the vertical rib 32.
It is a form that is connected through.

As shown in FIG. 1, a hydraulic pump 22 is directly connected to the left side of the engine 20, a radiator fan 21A driven by the engine 20 is provided on the right side, and a radiator 21 is provided on the right side thereof. On the front side of the radiator 21 and on the right side of the body frame 16,
A fuel tank 23 and a hydraulic oil tank 24 are arranged side by side in the front-rear direction, and a battery 25 is arranged above the fuel tank 23. The bonnets 26, 27, 28 include a fixed bonnet 26 that covers the engine 20, the hydraulic pump 22, and the radiator fan 21A from above and on the front, a rear bonnet 27 that covers the rear and that can be opened and closed, a radiator 21, a fuel tank 23, and hydraulic oil. It is composed of a tank 24 and a side bonnet 28 that covers the battery 25. The side bonnet 28 is formed to be long in the front-rear direction, and a long inspection port is formed in the front surface in the front-rear direction. Is closed by.

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. Specifically, FIG.
As shown in FIG. 5, the right vertical rib 32 has a branch portion 32A that extends outward in the left and right directions at a front and rear midway portion thereof, and a support base 47 is provided near the base end portion and the tip end portion of the branch portion 32A.
Is provided. Then, the left and right support bases 47L, 47
An L-shaped mounting tool 24A provided on the lower portion of the hydraulic oil tank 24 is mounted on the upper surface of the R 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 on the upper wall 31A of the support bracket 31, and a 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, extends obliquely rearward and upward from the attachment piece 48, and an L-shaped battery stand 51 in a side view is connected to the upper end of the support member 50.

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. Therefore, the lower portion of the hydraulic oil tank 24 is supported by the support bases 47L and 47R, and the upper portion thereof is supported by the support bracket 31 via the support member 50.

The support member 50 has an L-shaped receiving bracket 52 in a front view at the lower end thereof, and a lateral wall portion 52B of the receiving bracket 52 is located in a recess 23A formed inside the lower portion of the fuel tank 23. By engaging from the side, the fuel tank 23 is supported and its posture is maintained. The vertical wall portion 52A of the receiving bracket 52 is provided with a U-shaped hook 53 in a side view, and one end of a holding band (support member) 54 is detachably locked to the hook 53. There is.

The holding band 54 is composed of a band plate made of metal or the like, and extends rearward while being wound around the front surface and the outer surface of the fuel tank 23, and a fixing bolt 54A provided at a rear end portion of the holding band 54. The fixing nut 54 is passed through the mounting plate 55 provided on the hydraulic oil tank 24 or the right support 47R.
It is fixed by screwing B together. Therefore, the hydraulic oil tank (first tank according to the present invention) 24 and the fuel tank (second tank) 23 are different from the support brackets 31 and the vertical ribs 32 in the support bases 47L and 47R and the support member 50. It is attached and supported via a holding band 54 and the like, and erodes the space on the base member 30 as compared with the case where another bracket or the like is erected from the base member 30 to support the tanks 23 and 24. Is reduced, which contributes to downsizing of the turning machine body 4.

A peripheral groove 23B into which the holding band 54 is fitted is formed on the front surface and the outer side surface of the fuel tank 23 to prevent the holding band 54 from being displaced. Further, by tightening the fixing nut 54B, the fuel tank 23 can be supported without rattling. The swing driving body 40 of the excavator 5 includes the vertical ribs 3
The rear end is pivotally supported by the support plate 57 formed on the second branch portion 32A, and the front side passes through the lower side of the hydraulic oil tank 24 that is floated from the base member 30 by the support bases 47L and 47R and the recess 23A of the fuel tank 23. It is designed to stick out.

Here, the fuel tank 23 is not arranged so as to float from the base member 30 like the hydraulic oil tank 24, but a recess 23A is formed in the lower portion thereof to avoid interference with the swing driving body 40. Therefore, the capacity can be secured as much as possible, 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 supply port 23D is formed in the bulging portion 23C, so that the supply port 23D is It is arranged at a position as high as possible to facilitate fuel supply from the inspection port on the upper surface of the side bonnet 28.

The upper end of the support member 50 may be directly connected to the hydraulic oil tank 24 without being connected to the battery base 51. Further, the obliquely extending portion 50a of the support member 50 may be omitted and the receiving bracket 52 may be omitted. Can also be directly connected to the mounting piece 48. As shown in FIGS. 3 and 4,
A frame 58 is erected at the rear of the machine frame 16 so as to surround the engine 20, and the frame 58 includes an upper frame 58A made of a plate member that is long in the left-right direction, and left and right ends of the upper frame 58A. It has three legs 58B extending from the middle part to the front or the lower rear, and the lower end of each leg 58B has a left support base 47L, a rear mounting base 45 for weight, and a lateral rib 3.
It is attached and fixed to the left and right side portions of 3 by bolts.

An opening / closing hinge of the rear bonnet 27 is attached to an upper frame 58A of the frame 58, and a base of a column 59A of a sunshade 59 (see FIG. 2) is attached. As shown in FIGS. 1 and 2, a steering floor 60 is provided on the left side (a portion excluding the hood) of the front part of the turning machine body 4.
The driver's seat 61, the step portion 62, the control levers 63, 6
4, a driving unit having pedals 68, 69 and the like is provided. An upper portion of the driver's seat 61 is covered with a sunshade 59, and a guard member 65 also serving as a handrail is provided upright in the front.

As shown in FIG. 6, the control floor 60 is constructed by covering the upper part of the turning machine body 4 with a plurality of floor members 66A to 66E made of plate materials, of which the rear right floor member is provided. 66A has a driver's seat 6
A seat base 67 for supporting 1 is mounted, and a mat made of rubber or the like is covered on the upper surfaces of the other floor members 66B to 66E to form the step portion 62. The hydraulic pump 2 is installed in the turning body 4 below the control floor 60.
Driving oil (hydraulic actuator) 8, 11, 14, 40-4 for traveling, turning, excavation equipment, etc.
A control valve unit VU is provided for feeding and controlling the operation.

As shown in FIGS. 6 to 8, this control valve unit VU is provided with a plurality of control valves V corresponding to the respective driving bodies 8, 11, 14, 40 to 43 arranged in parallel in the front-rear direction and integrated. Each control valve V is connected to the corresponding drive body 8, 11, 14, 40-43 by a hydraulic hose. As shown in FIGS. 1 and 2, the operation lever 63 provided on the left and right sides of the driver's seat 61.
Is configured to operate the spools of the control valve V corresponding to the driving bodies 41 to 43 of the excavation device 5 and the turning drive body 11 by pilot pressure, and a pair of left and right operation levers 64 arranged on the front side of the driver's seat 61. Operates the spools of the control valves V1 and V2 that control the traveling drive body 8.

A pedal 68 is arranged on the right side of the traveling operation lever 64, and the pedal 68 is depressed to the left or right or front and back to operate the spool of the control valve V3 for controlling the swing driving body 40 and to reserve it. It is also used for the spool operation of the control valve V4 for the apparatus (for the service port). Further, a speed increasing pedal 69 is provided on the left side of the traveling operation lever 64. The control valve unit VU is mounted on a mounting base 70 mounted on the base member 30 of the swivel body 4.

The mount 70 is adapted to be mounted on the left front part of the swivel body 4 (base member 30) by a bolt or the like, and has a board 70A made of a plate material, and one side part of the board 70A ( The control valve unit VU is fixed to the left side) with bolts or the like. A support member 71 that supports the traveling operation lever 64 is fixed to the front portion of the board 70A by welding or the like. The support member 71 is disposed between the left and right standing walls 71L and 71R in the left-right direction. The support shaft 71A of the
A lower end portion of a traveling operation lever 64 is pivotally supported on A so as to be swingable back and forth.

A mounting plate 72 protruding rightward is bolted to the upper end of the right standing wall 71R of the support member 71, and the pedal 68 is mounted on the mounting plate 72. Behind the support member 71, on the side (right side) of the control valve unit VU, the traveling operation lever 64 and the pedal 68, and the corresponding control valves V1 to V1.
First and second interlocking device 7 for interlocking connection with a V4 spool
4, 75 are provided. The first interlocking device 74 is the substrate 7
The L-shaped links 74B rotatably attached to the front and rear two vertical axes 74A that are erected on the 0A, and the first link connecting the links 74B and the spools of the control valves V1 and V2. It has rod 74C and the 2nd rod 74D which connects each link 74B and each operation lever 64 on either side.

The second interlocking device 75 has two upper and lower links 75B rotatably attached to one support shaft 75A provided upright on the base plate 70A, each link 75B and each control valve V3, V4. 75C for connecting the first spool 75C
And a second rod 75D that connects each link 75B and the pedal 68. Therefore, the mount 70
The control valve unit VU, the traveling operation lever 64, the pedal 68, and the interlocking devices 74 and 75 are attached together, and the attachment base 70 is attached to the base member 30 of the turning machine body 4.

Therefore, if the above-mentioned components 64, 68, 74 and 75 are assembled to the mounting base 70 and then the mounting base 70 is mounted to the base member 30, each component 6
4, 68, 74, 75 can be easily and quickly assembled, and the operation lever 64 and pedal 68
And the adjustment of the interlocking operation between the control valve V and the control valve V, etc.
By performing it on the mounting base 70 before mounting it on the base member 30, it can be carried out easily in a short time. A mounting tool 77 having a female screw hole is provided on an upper part of the left standing wall 71L of the support member 71, while the vertical axis 75A of the second interlocking tool 75 is erected by a holder 78 standing on the substrate 70A. The holder 77, which is held in the state, is also provided with an internal threaded hole on the upper portion of the holder 78.

A floor member 66E which constitutes a part of the control floor 60 is fastened to the two fittings 77 by bolts. In this way, the mounting tool 77 of the floor member 66E is not provided on the base member 30 side of the turning machine body 4 but provided to the mounting base 70, so that the mounting tool when mounting the mounting base 70 on the base member 30. Does not become an obstacle, and the mounting tool 77 is provided on the members 71 and 78 for supporting the operation tools (lever 64, pedal 68) and the interlocking tools 74 and 75, thereby eroding the space on the substrate 70A. Without doing
The wearing tool 77 rarely interferes with the adjustment of the interlocking tools 74 and 75.

A control valve unit VU is provided on the substrate 70A.
A multi-valve MV is attached to the front side of the multi-valve MV, and hydraulic piping work between the multi-valve MV and the control valve unit VU can be easily performed. Further, on the front side of the support member 71, a support tool 79 for fixing and supporting the guard member 65 is provided upright. This support 79
Conventionally, it was directly attached to the base member 30 and the like of the swivel body 4, but this is a support tool for attaching the mounting base 70 to which the control valve unit VU and the like are attached to the base member 30. It becomes difficult to attach the armature, and in some cases, adjustment of the interlocking devices 74, 75 and the like may be out of order. Therefore, in the present embodiment, such a problem does not occur by also integrally fixing the support tool 79 to the mounting base 70.

The supporting member 79 is joined by welding to the support member 71 on the rear side thereof, whereby the supporting member 79 is reinforced by the supporting member 71 and the guard member 65 can be stably and firmly supported. Has become. The supporting member 79 can be used to support the cabin in the case of the cabin-type turning machine body 4. Further, the support 79 and the support member 71 may be integrally formed, or may be separated in the front and rear.

Of the cover bodies 18L and 18R constituting the outer peripheral portion of the swivel body 4, the one 18L arranged on the left side is mounted on the mount 70. Specifically, the stays 80 are protruded at a plurality of positions on the left side of the board 70A, and the plurality of stays 80 are also provided on the front surface of the support tool 79 on the front side of the board 70A. It is designed to be attached with bolts. As a result, a dimensional error is less likely to occur as compared with the case where the cover body 18L is mounted over a plurality of members such as the base member 30 and the mounting base 70, and reliable mounting is possible.

As shown in FIG. 9, the hydraulic hose P connecting each control valve V of the control valve unit VU and each driving body 41 to 43 of the excavator 5 extends rightward from the control valve unit VU. In addition, it is curved forward in a plane between the pair of left and right vertical ribs 32 and passes through the space surrounded by the upper, lower, left and right wall portions 31A, 31B, 31C of the support bracket 31 (see FIG. 8) to reach the excavation device 5. It is like this. Further, the curved portion W of the hydraulic hose P is provided with two guide members 81 and 82 for guiding the hydraulic hose P in the front and rear.

Of these, the rear guide member 81 is shown in FIG.
As shown in (c) and (d), the lower base 8 made of a plate material
1A, a pair of left and right vertical guides 81B that are erected at the left and right ends of the lower base 81A, a first horizontal guide 81C that is installed at an intermediate portion of the left and right vertical guides 81B, and one (left) vertical guide 81B. Has a L-shaped second horizontal guide 81D that projects forward from the front end and has a protruding end that bends downward, and a connecting plate 81E that connects the upper ends of the left and right vertical guides 81B, and the lower base 81A is on the base member 30. It is fixed by bolts and welding.

The two hydraulic hoses P1 and P2 (for supplying and discharging) connected to the bucket control valve V5 and the boom control valve V6 at the rear of the control valve unit VU are provided between the left and right vertical guides 81B. Each of the two hydraulic hoses P3 and P4 that pass through the upper side of the first lateral guide 81C and are connected to the arm control valve V7 and the service port control valve V4 in the front-rear midway portion of the control valve unit VU are It passes through the space surrounded by the horizontal guide 81D and the vertical guide 81B.
As shown in FIG. 9B, the front guide member 82 includes a lower base 82A made of a plate material and the lower base 82A.
Of the pair of vertical guides 82B erected at both ends of the vertical guide 82B, two upper and lower first horizontal guides 82C installed between the pair of vertical guides 82B, and one of the vertical guides 82B projecting leftward from the second vertical guide 82B. A horizontal guide 82D is provided, and the lower base 82A is fixed to the base member 30 by bolts, welding, or the like, and is disposed in a state of being inclined as a whole.

The hydraulic hoses P1 to P4 of each set are
A between the lower base 82A and the lower first lateral guide 82C A
1, A2 between the upper and lower first lateral guides 82C, 82C, the upper side A3 of the upper first lateral guide 82C, and the second lateral guide 8
It passes through a space defined by the upper side A4 of 2D, is guided to the support bracket 31, and is connected to the excavator 5 side. On the other hand, the boom 36 of the excavator 5 is shown in FIG.
As shown in (a), it has a boom main body 84 formed in a dogleg shape in a side view, and a connecting portion 85 attached to each end of the boom main body 84.
Has a box-shaped cross section and a hollow interior as shown in FIG.
The upper, lower, left and right four corners are chamfered, and a pair of U-shaped members formed by pressing a metal plate material such as a steel plate and an iron plate are butted against each other and welded and joined in the longitudinal direction of the boom.

Further, the boom body 84 is formed in a tapered shape from its bent portion to its tip. The connecting portion 85 is formed of a metal material such as cast steel, and the boom main body 8
4 has a base portion 85A which is fixed to the opening portion 84A at the base of the base 4 by a spigot fitting and is fixed by welding, and a pair of arms 85B is extended rearwardly on both sides of the base portion 85A as shown in FIG. 10C. The pair of arms 85B is formed with an insertion hole 85C in the left-right direction at the tip portions thereof.

The pair of arms 85B are pivotally connected to each other via a pivot 86 in the left-right direction while sandwiching the upper part of the swing bracket 35, and a space C surrounded by the arm 85B and the base 85A is provided on the front side of the pivot 86. The hydraulic hoses P (six in total of P1 for buckets, P3 for arms, and P4 for service ports) that are formed and passed through the swing brackets 35 from the support brackets 31 are inserted through the space C from bottom to top. A connecting wall 85E is formed at the base of the pair of arms 85B and has a downwardly inclined guide surface 85D that connects the two to each other and guides the hydraulic hose P.

The hydraulic hose P passing through the space C is provided near the guide surface 85D of the connecting portion 85 on the upper surface side of the boom body 84.
Clamping tool 87 is provided. This clamp tool 8
As shown in FIG. 10 (d), 7 is an elastic hold formed with a groove portion 87A for holding the four hydraulic hoses P aligned and held, and a groove portion 87B for holding the two hose P separately on the left and right sides thereof. A body 87C is provided, and a holding body 87D for holding the hydraulic hose P held in each groove 87A, 87B is provided, and the holding body 87D is fixed to the connecting portion 85 with a bolt 87E.

Here, the hydraulic hose P has pressure resistance and flexibility, and can follow the vertical swing of the excavator 5 (boom 36). Then, as shown in FIG. 11, the boom 3
The hydraulic hose P is pushed and pulled between the highest position X and the lowest position Z of 6 to cause a difference in length.
As shown in FIG. 9, the hydraulic hose P in the swivel body 4
It is adapted to be absorbed by the curved portion (curved absorbing portion) W of the. That is, in the conventional art, the hydraulic hose P passes behind the pivot 86 of the boom 36, and therefore, when the boom 36 is at the maximum raised position X, the hydraulic hose P is largely curved backward and protrudes from the boom 36. The curved portion hinders the forward field of view or contacts the guard member 65 or the like to impair durability, but as in the present embodiment,
By absorbing the difference in the length of the hydraulic hose P caused by the vertical swing of the boom 36 by the curved portion W in the swinging machine body 4, the above problem is solved.

Further, the clamp member 87 can surely suppress the lifting of the hydraulic hose P from the guide surface 85D. Further, since each hydraulic hose P is guided by the guide members 81 and 82 in the swivel body 4, it is prevented that the hydraulic hoses P come into contact with surrounding parts due to the behavior when absorbing the difference in length, and the hydraulic pressure is reduced. It is also prevented that the hoses P rub against each other. As shown in FIG. 8, a guide body 90 of the hydraulic hose P passing through the inside of the support bracket 31 is integrally cast on the lower surface of the upper wall 31A of the support bracket 31.
The guide body 90 has left and right vertical guides 90A and upper and lower horizontal guides 90B that connect the left and right vertical guides 90A, and four guides are provided in each of the spaces B1 and B2 defined by the vertical and horizontal guides 90A and 90B. The hydraulic hose P is divided and guided.

Further, as shown in FIG. 10 (a), a guide rod 91 having a front view gate shape is fixed to the bottom of the swing bracket 35, and the boom hydraulic hose P2 is
The guide rods 91 are guided to the boom driving body 41 by being distinguished from the other hydraulic hoses P1, P3, P4. The support bracket 31 is not only the guide body 90 that is integrally cast, but also a mounting bracket for mounting a grease nipple for greasing the swing drive body 40, the swivel bearing 9, and the like, and a right cover body 18R. Piece 92 and floor member 66C of control floor 60
The fittings 93, etc. of are made to be integrally molded,
The number of manufacturing steps can be reduced as compared with the case where these parts are retrofitted by welding or the like.

Further, as shown in FIGS. 6 and 9C,
A mounting member 94 is provided on the connecting plate E of the rear guide member 81, and a floor member 66A on which the seat base 67 is mounted is mounted on the mounting member 94 via bolts or the like. By mounting the floor member 66A using the guide member 81, the number of parts can be reduced.
Corrosion of the space on the base member 30 is also prevented, which contributes to downsizing of the swivel body 4. The present invention is not limited to the above embodiment, and can be modified in design as appropriate.

For example, the arrangement of the fuel tank and the hydraulic oil tank may be reversed front and back, or they may be arranged side by side. Further, the fuel tank or the hydraulic oil tank may be attached and supported on either the support bracket or the vertical rib. The arrangement of each control valve in the control valve unit is not limited to the above-described embodiment, and the arrangement of the hydraulic hose connecting the control valve and the hydraulic actuator of the excavator (passing position with respect to the guide member) can be changed. Further, in the above-described embodiment, the turning work machine is exemplified by the rear small turning type backhoe, but it may be configured as a so-called standard type backhoe in which the turning locus of the turning machine body protrudes from the traveling device.

[0047]

As described in detail above, according to the present invention,
By using the support brackets and the vertical ribs that form the swivel body as support members for the tank, the number of parts can be reduced and a space on the base member can be secured, which contributes to downsizing of the swivel body.

[Brief description of drawings]

FIG. 1 is a plan view of a swivel work machine according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of a body frame.

FIG. 4 is a right side view of a body frame and a tank.

FIG. 5 is a front view of a machine body frame and a tank.

FIG. 6 is a plan view of a machine body frame and a mounting base.

FIG. 7 is a left side view of a machine body frame and a mounting base.

FIG. 8 is a front view of a machine body frame and a mounting base.

9A is a plan view of a machine body frame showing a piping state of a hydraulic hose, FIG. 9B is a front view of a front guide member, FIG.
(C) is a front view of the rear guide member, and (d) is a partial side view of the rear guide member.

FIG. 10 shows the relationship between the boom of the excavator and the hydraulic hose, (a) is a side view at the highest position, (b) is a boom sectional view, (c) is a rear view, and (d) is a clamp body. FIG.

FIG. 11 is a side view showing a swinging state of the boom.

[Explanation of symbols]

1 swivel work machine 3 traveling devices 4 turning machine 5 excavation equipment 17 weights 23 Fuel tank (second tank) 24 Hydraulic oil tank (first tank) 30 base member 31 Support bracket 32 vertical ribs 47L support 47R support 50 Support member 54 Holding band (support member) 66A floor material 81 Guide member 94 Wearing equipment P hydraulic hose V control valve

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshiaki Otani             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Tokuzo Saida             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F-term (reference) 2D015 BA01

Claims (3)

[Claims] 1. A slewing machine body (4) is provided on a traveling device (3) so as to be rotatable around a vertical axis, and the slewing machine body (4) includes a base member (30) constituting a bottom portion thereof. ,
A support bracket (31) provided at the front part of the base member (30) for supporting the excavation device (5), a weight (17) provided at the rear part of the base member (30), and this weight (17). And a vertical rib (32) provided between the support bracket (31) and the support bracket (31). The tank (23, 24) A swing working machine characterized in that it is attached and supported. 2. A support base (47) is provided on the vertical ribs (32), and a first tank (24) is provided on the support base (47).
And a support member (52, 54) for supporting the second tank (23) is provided between the first tank (24) side and the support bracket (31). The turning work machine according to claim 1. 3. The hydraulic actuators (41 to 43) of the excavator (5) and the control valves (V5 to V7) arranged in the turning machine body (4) are connected by a hydraulic hose (P), A guide member (81) for guiding the hydraulic hose (P) is provided on the base member (30), and the guide member (81) covers the upper portion of the swivel body (4). The swivel work machine according to claim 1 or 2, wherein the swivel work machine also serves as a mounting tool (94).