JP5807088B2 - Swivel work machine - Google Patents

Description

  The present invention relates to a turning work machine such as a backhoe.

  The swivel work machine includes an engine arranged at the rear of the swivel, a partition wall standing from the swivel in front of the engine, and a ground work device provided at the front end of the swivel in front of the partition Support bracket, a pair of left and right vertical ribs connecting the support bracket and the partition wall, a tank provided on one side of the left and right of the swivel, and a driver seat provided in front of the engine. .

  The tank mounting structure is provided with a receiving member (partition wall) that contacts the rear surface of the tank on the swivel base and a support base at a position facing the partition wall, and the front surface of the tank is pressed against the support base. Thus, a clamping member that holds the tank and a position regulating means that regulates the movement of the tank are provided (see Patent Document 1).

JP 2005-105605 A

However, the above conventional tank mounting structure has the tank arranged longitudinally along one side end of the swivel, so that the control valve or the like is located in the space on the swivel side that is easily exposed and exposed when the bonnet is opened. It has become difficult to deploy internal equipment. In addition, the front side of the partition wall and the lower side of the driver's seat is a dead space in which no tank or internal device can be disposed.
In view of the above, an object of the present invention is to provide a turning work machine in which a tank can be easily installed.

In order to solve the above problems, the present invention employs the following technical means.
The invention according to claim 1 is an engine disposed at the rear of the swivel, a partition wall standing upright from the swivel in front of the engine, a pair of left and right vertical ribs connected to the partition wall, and the swivel A swivel work machine having a tank placed on one of the left and right sides of the engine and a driver's seat arranged in front of the engine, wherein the left and right vertical ribs open upward along the tank bottom surface. A notch recess cut out in a shape is provided, and a cradle for handling the bottom of the tank is provided on the swivel base and inside the vertical rib provided with the notch recess, and the cradle is a plate-like body The tank is disposed on the flat plate portion of the cradle across the notch recess of the one vertical rib on the front side of the partition wall, and the tank is arranged in a horizontal direction in a plan view. The length of the part inside the one vertical rib is Longer than the portion that is outside of the longitudinal ribs of the one, some parts in the interior to a point that is supported by the cradle the.

According to a second aspect of the present invention, the tank includes a main portion that is formed to be long on the left and right sides, and a lower bulging portion that bulges downward from the lower surface of the outer portion of the main portion. The front and rear width of the main portion is shorter than the front and rear length of the notch recess so as to fit within the notch recess of the one vertical rib, and the lower bulging portion is on the left and right outer sides of the notch recess of the vertical rib and the lower end is It swells downward until it comes close to the swivel board .

According to the first aspect of the present invention, when the tank is inserted from the outside of the swivel base and installed on the swivel base, one end side (the back side) of the tank is temporarily placed in the notch recess and placed on the cradle. The tank can be easily installed.
According to the invention which concerns on Claim 2, the capacity | capacitance of a tank can be enlarged by providing a lower bulging part in a tank. Moreover, since the lower bulge part supports the other end side (outside) of the tank, it is easy to insert the tank.

It is a top view of the turntable of the turning work machine concerning the present invention. It is a perspective view of a tank mounting apparatus. It is a front view of a turntable. It is a right view of a turning work machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a turning work machine 1 according to the present invention.
In FIG. 4, the swivel working machine 1 has a swivel base 2 mounted on a traveling device 22 having a pair of left and right crawler traveling bodies 21 so as to be rotatable around a swivel axis X in a vertical direction via a swivel bearing 23. It has become. In addition, a dozer 24 is provided at the front of the traveling device 22, a cabin 25 surrounding the driver's seat 9, a control lever, and the like is provided above the swivel base 2, and a ground work device (excavation device) is disposed at the front end of the swivel base 2. ) 5 is provided.

  The ground work device 5 includes a swing bracket 26 supported on the front portion of the swivel base 2 so as to be swingable about a vertical axis, a boom 27 supported on the swing bracket 26 so as to be swingable about a left-right axis, An arm 28 is connected to the tip of the boom 27 so as to be swingable around the left and right axes, and a bucket 29 is connected to the tip of the arm 28 so as to be swingable around the left and right axes.

The boom 27 is rocked up and down by a boom cylinder 30 interposed between the boom 2 and the swivel base 2. The arm 28 is driven to swing by an arm cylinder 31 interposed between the arm 27 and the bucket 29, and the bucket 29 is driven to swing by a bucket cylinder 32 interposed between the arm 28 and the arm 28.
As shown in FIGS. 1 and 4, the swivel base 2 is provided on a swivel frame 33 serving as a skeleton, a rear protector 34 attached and fixed to a rear portion of the swivel frame 33, and left and right sides of the rear protector 34. It has a pair of left and right side protectors 35L and 35R. The rear part 34 and the side protectors 35L and 35R constitute the rear part of the swivel base 2. An engine room 36 surrounded by a swivel board 39, a partition wall 4, a rising wall 43, and a bonnet 55, which will be described later, is formed at the rear of the swivel base 2. The engine 3 is disposed in the engine room 36. Has been.

The swivel base 2 includes left and right side cover bodies 37L and 37R that cover the left and right side surfaces, and a front cover body 38 that covers the front surface.
The swivel frame 33 is made of a plate material constituting the bottom wall of the swivel base 2 and has a swivel board 39 on which the engine 3 is mounted at the rear, and is provided on the front end portion of the swivel board 39 so as to protrude forward, and the ground work device 5. The support bracket 6 that supports the swing bracket 26, the partition wall 4 that is erected from the turning board 39 so as to be divided forward and backward in front of the engine 3, and the support bracket 6 and the partition wall 4 are connected on the turning board 39. It has a pair of left and right vertical ribs 7L, 7R.

The turning substrate 39 is divided into a front plate portion 40 and a rear plate portion 41 on the front side and the rear side.
The front plate portion 40 is formed with an opening 42 for weight reduction at a central portion below the driver's seat 9, and a rear portion projects rearward from the partition wall 4.
The rear plate portion 41 is formed to be thinner than the front plate portion 40 and is bonded and fixed so that the upper surface of the front plate portion 40 is flush with the upper surface. A rising wall 43 formed by bending from the rear end of the rear plate portion 41 is provided, and a pair of left and right vertical walls 44L and 44R connecting the partition wall 4 and the rising wall 43 project on the rear plate portion 41. It is installed.

An attachment rod 45 that connects the partition wall 4 and the rising wall 43 is provided on the left side of the left vertical wall 44L, and the radiator 46, the oil cooler 47, the battery 48, and the like are connected via the attachment rod 45. It is attached.
The front portions of the left and right vertical walls 44L and 44R protrude forward from the rear plate portion 41, and are fixed to the rear portion of the front plate portion 40 and the partition wall 4. The rear ends of the left and right vertical walls 44L and 44R are fixed to the rising wall 43.

Engine attachment portions 49 are formed at both longitudinal ends of the pair of left and right vertical walls 44L and 44R, the front end of the front engine attachment portion 49 is fixed to the partition wall 4, and the rear end of the rear engine attachment portion 49 rises. It is fixed to the wall 43.
The left and right vertical ribs 7L and 7R have a C-shaped front side extending from the support bracket 6 toward the rear, and the rear sides are parallel to each other and extend rearward. It is fixed by.

The connecting portion of the rear end of the left vertical rib 7L to the partition wall 4 and the fixing portion of the left vertical wall 44L to the partition wall 4 of the engine mounting portion 49 are overlapped in the left-right direction. On the other hand, the connecting portion of the rear end of the right vertical rib 7R to the partition wall 4 and the fixing portion of the right vertical wall 44R to the partition wall 4 of the engine mounting portion 49 are overlapped in the left-right direction.
On the upper part of the partition wall 4, a step mounting plate 50 is projected forward, and a plurality of step support cylinders 51 are projected upward on the front side of the turning substrate 39 (see FIG. 1). The rear end portion of step 52 is placed and fixed on the step mounting plate 50 and is also placed and fixed on the plurality of step support cylinders 51, and step 52 is disposed above the turning substrate 39. The driver seat 9 in the cabin 25 is provided above the step 52.

Cover mounting plates 53L and 53R and cover mounting pieces 54L and 54R are provided on both sides of the swivel board 39, and side cover bodies 37L and 37R on the left and right side surfaces of the swivel base 2 are mounted via these.
A bonnet 55 that covers the engine 3 is provided at the upper rear portion of the revolving frame 33.
The bonnet 55 includes a bonnet rear portion 56 disposed above the rear protector 34 so as to cover the rear upper side of the engine 3, and a pair of left and right bonnets covering the side of the engine 3 at the left and right sides of the bonnet rear portion 56. There are provided portions 57L, 57R and a bonnet front portion 58 that partitions the cabin 25 and the engine room 36 at the front upper side of the left and right bonnet side portions 57L, 57R.

The bonnet rear portion 56 is supported so as to be freely opened upward around a left and right axis provided at the front end. The left and right bonnet side portions 57L and 57R are connected to the upper ends of the left and right side portion protectors 35L and 35R, respectively.
The right side protector 35R and the bonnet side 57R are detachably provided integrally with the revolving frame 33 and the partition wall 4 with fasteners or the like. The fuel tank 8 can be inserted and removed and checked (see FIGS. 1 and 4).

As shown in FIG. 1, the revolving frame 33 has a fuel tank (tank) 8, a control valve 60, a hydraulic oil tank 61, and the like mounted in front of the partition wall 4.
The fuel tank 8 is placed on the left and right sides (right side) of the revolving frame 33, and a control valve 60 is disposed on the right side of the revolving frame 33 in front of the fuel tank 8. The hydraulic oil tanks 61 are respectively disposed on the left and right other sides of the revolving frame 33.

The control valve 60 is formed by connecting control valves for controlling various hydraulic devices such as the ground work device 5 and the traveling device 22 provided in the turning work machine 1. When the right side cover body 37R is removed, the control valve 60 is exposed at a position where inspection and replacement are possible.
The hydraulic oil tank 61 has convex portions 61a and 61b on the front and rear surfaces, and the front convex portion 61a is a front fitting formed at a contact portion with the front surface of the tank in the stop plate 62 standing at the left end of the turning substrate 39. The rear projection 61b is attached to the revolving frame 33 by fitting into the rear fitting hole 4a formed in the contact portion with the tank rear surface on the left side of the partition wall 4 in the hole 62a.

  As shown in FIG. 1, the fuel tank 8 is detachably disposed in the left and right laterally in plan view so as to cross the left and right (right) vertical ribs 7 </ b> R in front of the partition wall 4. The fuel tank 8 is attached to a position below the step attachment plate 50 of the partition wall 4 via a tank attachment device 66 described later (see FIG. 2), and is accommodated between the turning substrate 39 and the step 52. It will be. The fuel tank 8 extends from the left and right side ends (left end) of the swivel base 2 to below the driver's seat 9. The right side of the fuel tank 8 has a right side cover body 37R, a side protector 35R, and It will be exposed when the bonnet side 57R is removed.

The fuel tank 8 has a main portion 8A that is long on the left and right sides, and a lower portion that bulges downward from the lower surface of the outer portion of the main portion 8A (the portion located near the left and right sides (right) edge of the turning frame 33). It has a bulging portion 8B and an oil supply cylinder portion 8C protruding upward from the upper surface of the outer portion of the main portion 8A.
The rear upper part of the right vertical rib 7R crossed by the fuel tank 8 is cut out in an upward opening shape along the bottom surface of the fuel tank 8 (hereinafter referred to as “cut-out recess 63”).

  On the left and right side surfaces (that is, the back side surface (back side surface) 8D and the outer side surface (outer side surface) 8E) of the main portion 8A of the fuel tank 8, convex engaging portions that bulge outward in the left and right directions, respectively. 12 and 15 are formed. The back engaging portion 12 and the outer engaging portion 15 are substantially frustoconical convex portions protruding in a tapered manner from the side surface to the left and right outwards. Further, the protruding lengths of the back engaging portion 12 and the outer engaging portion 15 may be shorter or longer than the thickness of the back position setting member 11 and the outer position setting member 14 described later.

The main portion 8A is set such that the front-rear width of the main portion 8A is shorter than the front-rear length of the notch recess 63 so as to be accommodated in the notch recess 63 of the right vertical rib 7R described above.
The lower bulging portion 8B bulges downward on the right outer side of the right vertical rib 7R until its lower end is close to the swivel board 39, so that the capacity of the fuel tank 8 can be increased. At the time of replacement, there is no obstacle to the fuel tank 8 being pulled out or pushed in from the right side of the swivel base 2.

The oil supply cylinder portion 8C has a protruding length that is exposed to the outside from an oil supply recess 64 provided on the right bonnet side portion 57R, and an oil supply cap 65 is detachably attached to the tip portion. Yes.
The bottom of the rear side portion (the portion located below the driver's seat 9) of the fuel tank 8 is supported by a cradle 10 provided on the swivel base 2 and is turned to the left of the cradle 10 The back position setting member 11 is erected between the left edge of the opening 42 of the table 2 and the left vertical rib 7L. The back position setting member 11 is formed separately from the left vertical rib 7L described above, but may be formed integrally.

The cradle 10 is a substantially L-shaped plate-like member when viewed from the front. The cradle 10 is erected from the right side of the opening 42 of the swivel base 2, and crosses the opening 42 from the upper end of the erection 10 a. And a flat plate portion 10b extending substantially horizontally to the left.
The flat plate portion 10b is a plate-like body that is formed to be long on the left and right sides, the tip (left end) is connected to the midway portion in the vertical direction of the back position setting member 11, and the upper surface of the flat plate portion 10b is the fuel tank 8. It will contact | abut with the bottom part of the back side part. Therefore, the fuel tank 8 can be slid on the flat plate portion 10b, so that the fuel tank 8 can be smoothly extracted or pushed.

The back position setting member 11 is a plate-like member having a surface (back contact surface) 11a that contacts the back side surface 8D of the fuel tank 8 on the right side, and is located at a position opposite to the back side surface 8D of the fuel tank 8. A back engagement portion 13 that engages with the back engagement portion 12 is provided.
This back-engaged portion 13 is a substantially circular through hole formed in the middle in the vertical direction of the back position setting member 11 and engages with the outer peripheral surface of the back engaging portion 12 into which the right opening edge is fitted. It is formed as follows. Therefore, the back engagement portion 13 can restrict the back and forth movement of the fuel tank 8 on the back side by fitting (engaging) the back engagement portion 12.

Further, the fuel tank 8 is also restricted from moving downward by the cradle 10, and at the same time, the fuel tank 8 is also restricted from moving leftward by the contact between the back side surface 8 </ b> D and the back position setting member 11. And the back position setting member 11 positions the back (left) direction, the front and back, and the up and down direction on the back side of the fuel tank 8.
In addition, since the fuel tank 8 is mounted on the cradle 10, at least the movement in the front-rear direction and the upward direction may be restricted by the engagement between the back engaging portion 12 and the back engaged portion 13.

  The outer position setting member 14 is a plate member that is detachably attached to the partition wall 4 and has a surface (outer contact surface) 14 a that contacts the outer surface 8 E of the fuel tank 8. The outer position setting member 14 is detachably fixed to the right end portion of the partition wall 4 by a fixing tool 14b such as a bolt, and protrudes forward from the end portion of the mounting portion 14c so that the outer contact surface 14a is formed. A rectangular projecting plate portion 14d on the left side, and is substantially L-shaped in plan view.

A laterally long hole 14e that is long in the left-right direction is formed in the mounting portion 14c, and the outer position setting member 14 is attached to the partition wall 4 by a fixture 14b that is inserted through the laterally long hole 14e.
The projecting plate portion 14 d is provided with an outer cover engaging portion 16 that engages with the outer engaging portion 15 at a position facing the outer surface 8 E of the fuel tank 8.
The outer cover engaging portion 16 is also a substantially circular through-hole formed at the center of the protruding plate portion 14d of the outer position setting member 14 as in the rear side, and the outer engagement portion 15 into which the left opening edge is fitted. Since it engages with the outer peripheral surface, the outer casing engaging portion 16 can fit the outer engaging portion 15 to restrict the forward / backward and vertical movement of the fuel tank 8 on the outer side.

Further, the downward movement restriction by the cradle 10 and the rightward movement restriction by the outer position setting member 14 are also performed, and the fuel tank 8 is positioned in the outer (right) direction, the front and rear, and the vertical direction on the outside. .
In addition, since the fuel tank 8 is mounted on the cradle 10, as long as at least forward and backward movement is restricted by the engagement of the outer engagement portion 15 and the outer cover engagement portion 16 as in the back side. Good.

The tank mounting device 66 is configured by the cradle 10, the back position setting member 11, the back engaging portion 12, the back engaged portion 13, the outer position setting member 14, the outer engaging portion 15, and the outer cover engaging portion 16 described above. It is configured.
A usage mode of the tank mounting device 66 in the turning work machine 1 according to the present invention will be described.
When the fuel tank 8 of the turning work machine 1 is replaced, first, the right side cover body 37R, the side protector 35R, and the hood side part 57R are removed.

As shown in FIG. 2, the outside of the fuel tank 8 is positioned and fixed by the outer position setting member 14, but the fuel tank 8 is moved to the right outside of the swivel base 2 by removing the fixture 14 b of the mounting portion 14 c. Can be extracted.
After the extraction, the fuel tank 8 is inserted again from the right side of the swivel base 2, so that the bottom part on the back side is pushed back while being placed on the base 10 and slid, and the back engagement part 12 of the fuel tank 8 is inserted. Can be inserted into the back engagement portion 13 of the back position setting member 11. By engaging the outer peripheral surface of the back engagement portion 12 to be inserted and the right opening edge of the back engagement portion 13, the back and forth movement in the back side of the fuel tank 8 is restricted.

By pushing the back engagement portion 12 until the back side surface 8D comes into contact with the back contact surface 11a of the back position setting member 11 at the time of this movement restriction, the contact area is increased and the positioning is supported more reliably on the back side of the fuel tank 8. be able to.
Next, the outer engagement portion 15 of the fuel tank 8 is fitted into the outer cover engagement portion 16 of the outer position setting member 14, and the outer peripheral surface of the outer engagement portion 15 is set to the left opening edge of the outer cover engagement portion 16. Engage. The attachment portion 14c is attached to the right end portion of the partition wall 4 by the fixture 14b inserted through the laterally long hole 14e while pressing the outer position setting member 14 in the back direction of the fuel tank 8 in this engaged state. As a result, the forward / backward and upward / downward movement of the fuel tank 8 is restricted.

At the time of this movement restriction, the outer position setting member 14 is similarly pushed and pushed until the outer surface 8E and the outer contact surface 14a come into contact with each other, so that the contact area is increased and the fuel tank 8 can be reliably positioned and supported even on the outer side. .
At the same time, the downward movement of the fuel tank 8 is also restricted by the cradle 10 that is held. In addition, the control valve 60 exposed in front of the fuel tank 8 can be inspected and replaced.

After the fuel tank 8 is attached, the right side cover body 37 </ b> R, the side protector 35 </ b> R, and the bonnet side part 57 </ b> R are attached to the turning frame 33.
Thus, since the fuel tank 8 can be inserted and removed from the right side of the swivel base 2 on the front side of the partition wall 4 and below the driver's seat 9, the dead space below the driver's seat 9 can be used effectively. At the same time, internal devices such as the control valve 60 can be provided in front of the fuel tank 8, and maintenance is improved.

In addition, this invention is not limited to embodiment mentioned above. Each configuration of the turning work machine 1 or the like, or the overall structure, shape, dimensions, and the like can be appropriately changed in accordance with the spirit of the present invention.
In the turning work machine 1, the tank mounting device 66 is applied to the fuel tank 8, but may be applied to, for example, the hydraulic oil tank 61 or other tanks.

Although the fuel tank 8 is disposed on the right side of the swivel base 2, the fuel tank 8 may be disposed on the left side of the swivel base 2 by replacing the arrangement with the hydraulic oil tank 61 on the left side.
Further, the fuel tank 8 may be arranged horizontally long across both the left and right vertical ribs 7L, 7R.
On the swivel board 39 facing the bottom surface of the lower bulging portion 8B of the fuel tank 8, the flat plate portion 10b of the cradle 10, the back contact surface 11a of the back position setting member 11, and the external contact surface of the external position setting member 14 A cushion material that can come into contact with the fuel tank 8 may be provided on each of the 14a.

In addition, an engagement protrusion that protrudes downward is provided at the lower end of the lower bulging portion 8B of the fuel tank 8, and an engagement notch that engages with this and opens to the right is formed on the swivel board 39. Good. As a result, the fuel tank 8 is restricted from moving forward, backward, leftward and downward, and the fuel tank 8 can be positioned more firmly.
The outer position setting member 14 is attached to the partition wall 4, but may be detachably attached to the turning substrate 39.

In the above-described embodiment, the engaging portions 12 and 15 of the fuel tank 8 are convex. However, the engaging portions 12 and 15 of the fuel tank 8 may be concave. At this time, both the engaged portions 13 and 16 are convex correspondingly.
The battery 48 may be disposed further forward than the control valve 60 in front of the fuel tank 8.

DESCRIPTION OF SYMBOLS 1 Turning work machine 2 Turning table 3 Engine 4 Partition wall 5 Ground work apparatus 6 Support bracket 7 Vertical rib 8 Tank 8B Lower bulging part 9 Driver's seat 10 Receiving base 11 Back position setting member 12 Back engaging part 13 Back engaged part Part 14 Outer position setting member 15 Outer engagement part 16 Outer cover engagement part

Claims (2)

The engine (3) disposed at the rear of the swivel base (2), a partition wall (4) standing upright from the swivel base (2) in front of the engine (3), and the partition wall (4) It has a pair of left and right vertical ribs (7), a tank (8) placed on the left and right sides of the swivel base (2), and a driver seat (9) arranged in front of the engine (3). A swivel working machine,
The left and right vertical ribs (7) are each provided with a notch recess (63) cut out in an upward opening along the tank bottom surface, and provided on the swivel base (2) and the notch recess (63). A cradle (10) for handling the bottom of the tank (8) is provided inside the vertical rib (7),
The cradle (10) has a flat plate portion (10b) made of a plate-like body,
It said tank (8), are disposed on the partition wall (4) longitudinal ribs (7) receives across the cutout recess (63) stand on the front side in the one of the flat plate portion (10) (10b) on ,
In the tank (10), the length in the left-right direction in plan view is longer in the part inside the one vertical rib (7) than in the part outside the one vertical rib (7), A turning work machine characterized in that the inner portion is supported by the cradle (10) . The tank (8) has a main part (8A) that is formed long on the left and right sides, and a lower bulge part (8B) that bulges downward from the lower surface of the outer part of the main part (8A),
The main portion (8A) is formed such that the front-rear width of the main portion (8A) is shorter than the front-rear length of the notch recess (63) so that the main portion (8A) is accommodated in the notch recess (63) of the one vertical rib (7). ,
The lower bulging portion (8B) bulges downwardly on the left and right outer sides of the notch recess (63) of the vertical rib (7) until its lower end is close to the turning substrate (39). The turning work machine according to 1.

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