JP2004137816A - Working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydraulic shovel capable of simplifying a mounting structure of a battery and sparing space. <P>SOLUTION: A hydraulic oil tank 61 is fixed to the seat frame 32 of the body by a bracket 67 mounting a tank. A battery 77 supplying electric power to electric equipment is disposed onto a support part 69 of the bracket 67 mounting the tank. The bracket 67 mounting the tank can be used for support of the hydraulic oil tank 61 and the battery 77 in common. The structure mounting the battery 77 can be simplified compared with the case that a battery room in which batteries 77 are arranged is separately installed in the body. A space where the battery room is separately prepared is not required in the frame 32 for the seat and the space can be spared for effectively using the battery space 76 on the bracket 67 mounting the tank. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a working machine including a battery and a working fluid tank.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as this type of working machine, there is known a hydraulic shovel provided with a lower traveling body capable of self-propelling, and an upper revolving body rotatably provided above the lower traveling body.
[0003]
Further, between the upper plate and the lower plate provided on the revolving frame of the upper revolving structure, a battery for supplying electric power to electric components such as a starter motor of the engine, a controller, various sensors, and lights are mounted. This battery is disposed on a battery mounting plate mounted on a lower plate of the upper swing body (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-2000-64346 (page 5-6, FIG. 5)
[0005]
[Problems to be solved by the invention]
However, the above-described hydraulic excavator requires a dedicated structure such as a battery mounting plate for mounting a battery, and also requires a space for accommodating the battery together with the battery mounting plate. There is a problem that it is not easy to make space.
[0006]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a working machine capable of simplifying a battery mounting structure and saving space.
[0007]
[Means for Solving the Problems]
According to the first aspect of the present invention, a machine body, a working device operable by a fluid pressure actuator, a tank support member provided in the machine body, and fixed to the tank support member, are supplied to and discharged from the fluid pressure actuator. A working machine comprising: a working fluid tank storing a working fluid; and a battery disposed on a tank support member and supplying electric power to an electrical unit, wherein the working machine stores a working fluid supplied to and discharged from a fluid pressure actuator. By arranging a battery for supplying power to the electrical unit on the tank support member for fixing the fluid tank, the tank support member can be used for supporting the working fluid tank and the battery, and, for example, a battery for arranging the battery The battery mounting structure can be simplified as compared with the case where the chambers are separately provided, and the space on the tank support member is effectively used, so that the battery chambers and the like are separately provided. Space can be space saving because it does not require in the machine body.
[0008]
According to a second aspect of the present invention, in the working machine according to the first aspect, the tank support member includes a contact portion that contacts and supports a lower side portion of the battery, and an upper portion of the battery with respect to the contact portion. An upper support member is provided from the opposite side to the upper portion, abuts on the upper and side portions of the battery to support the upper and side portions of the battery, and sandwiches the battery with the contact portion. The tank support member is provided with a contact portion that contacts the lower side of the battery and supports the lower side of the battery, and contacts the upper portion of the battery and the upper portion of the battery. By arranging the upper support member supporting the side portion from the side opposite to the upper portion of the battery to the contact portion from the upper side to the upper portion, the opposite side portion of the battery with the contact portion and the upper support member, Since the upper and lower parts can be clamped and fixed, movement of the battery due to, for example, engine vibrations is suppressed. It can be.
[0009]
According to a third aspect of the present invention, in the working machine according to the second aspect, the battery is provided substantially diagonally from the upper side to the lower side, and one end is attached to a vicinity of the contact portion of the tank support member. A working machine comprising a fixing member having the other end detachably attached to the upper support member and detachably fixing the upper support member, wherein one end of the fixing member is attached near a contact portion of the tank support member. By detachably attaching the other end to the upper support member and fixing the upper support member to the tank support member with a fixing member provided substantially diagonally on the side of the battery, for example, the engine can be mounted on the battery. Since the force applied to the upper support member when a force generated by vibrations etc. acts is supported near the contact part of the tank support member via the fixing member, the battery is more securely held between the contact part and the upper support member. Can be fixed Both by detachably mounting the other end portion of the fixing member to the upper support member, the maintenance of the batteries by removing the upper support member, or exchange, etc. can be easily.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS.
[0011]
FIG. 4 shows a hydraulic excavator 1 as a working machine. In the hydraulic excavator 1, an upper revolving unit 4 is rotatably mounted above a self-propelled lower traveling unit 2 via a revolving unit 3. A body 5 is provided on the upper revolving unit 4, and the lower traveling unit 2, the revolving unit 3, the upper revolving unit 4, and the body 5 constitute a machine body 6.
[0012]
Further, a swing bracket 12 is pivotally supported in a horizontal direction by a boom swing cylinder, which is a hydraulic cylinder (not shown), at a tip end of a protruding portion 11 protruding forward from the upper swing body 4.
[0013]
A front working device 13 as a working device protrudes from the front side of the upper swing body 4. The front working device 13 includes a boom 14, an arm 15, and a bucket 16. The front working device 13 is provided with a boom cylinder 21, an arm cylinder 22, and a bucket cylinder 23 as fluid pressure actuators. The boom cylinder 21, the arm cylinder 22, and the bucket cylinder 23 use the boom 14, the arm 15, and the arm 15. And the bucket 16 are respectively rotated.
[0014]
On the other hand, a power device housing (not shown) provided on the rear side of the body 5 includes a seat frame 32 serving as a frame of the power device housing. As shown in FIGS. 1 to 3, the seat frame 32 includes a substantially rectangular annular frame 33 and a pair of support frames 34 as support members. These support frames 34 constitute a pair of legs 35 located behind the seat frame 32.
[0015]
Further, a mounting frame 41 configured by connecting a pair of edge frames 36 in parallel is mounted on the support frame 34. The lower end of the leg 35 is detachably attached to and connected to a frame attachment base 44 protrudingly attached to the upper swing body 4 of the attachment frame 41.
[0016]
Further, in the space 51 formed by the mounting frame 41 and the support frame 34, approximately the upper half of the engine 52 whose lower half is housed in the upper revolving unit 4 is housed. And the support frame 34.
[0017]
As shown in FIG. 1, a main pump 53, which is a hydraulic pump driven by the engine 52, is attached to the engine 52.
[0018]
As shown in FIGS. 1 to 3, the space 51 formed by the seat frame 32 and the support frame 34 is supplied with and discharged from the main pump 53, that is, the working oil circulated and built into the main pump 53. A working oil tank 61 as a working fluid tank for storing the pilot oil circulated by a pilot pump (not shown). The hydraulic oil tank 61 is attached to the left side of the engine 52 on the upper swing body 4.
[0019]
Further, a housing recess 62 that is recessed is provided below the front side of the hydraulic oil tank 61. The housing recess 62 is opened forward and downward of the hydraulic oil tank 61, and a main pump 53 attached to the engine 52 is fitted and housed in the housing recess 62.
[0020]
Further, a part of the upper side surface of the hydraulic oil tank 61 is provided with a slope part 63 inclined downward toward the outside of the seat frame 32, and the slope part 63 has a A cylindrical return filter 64 for filtering return oil is inserted into the hydraulic oil tank 61 at an angle and is detachably attached.
[0021]
One end of a return pipe 65 through which return oil flows is attached to the return filter 64, and the other end of the return pipe 65 projects forward from the front side surface of the hydraulic oil tank 61. I have.
[0022]
Further, as shown in FIGS. 1 and 2, a thin plate-shaped lower tank mounting bracket 66 as a lower tank supporting member is welded and mounted below the housing recess 62 of the hydraulic oil tank 61. ing. The lower tank mounting bracket 66 is provided so as to extend vertically downward, and the lower end of the lower tank mounting bracket 66 is bent forward in an L-shape to the front of the body 5. The bent portion 66a is formed integrally. The lower surface of the lower bent portion 66a is fixed to a part of the upper surface of the upper rotating body 4 by bolting, and the lower side of the hydraulic oil tank 61 is fixed to the upper rotating body 4. .
[0023]
Further, a plate-shaped tank mounting bracket 67 as a tank support member is welded to a position slightly below the front side surface of the hydraulic oil tank 61 and above the return pipe 65. The tank mounting bracket 67 has a width substantially equal to the width of the hydraulic oil tank 61, and includes a mounting base end 68 mounted along the front side surface of the hydraulic oil tank 61.
[0024]
Further, on the distal end side of the mounting base end portion 68, as shown in FIG. 1, the mounting base end portion 68 is bent in an L shape from the mounting base end portion 68 in a direction perpendicular to the front side surface of the hydraulic oil tank 61, and A support portion 69 extending in the horizontal direction is provided integrally with the mounting base end portion 68. The support portion 69 extends forward of the distal end of the return pipe 65 and near the edge frame 36.
[0025]
Further, a bent portion 71 bent vertically downward between the distal end portion of the return pipe 65 and the edge frame 36 is provided integrally with the support portion 69 on the distal end side of the support portion 69 of the tank mounting bracket 67. The bent portion 71 extends to a position below the lower end of the leg 35 and the return pipe 65.
[0026]
An attachment portion 72 bent forward of the body 5 is provided integrally with the bent portion 71 on the distal end side of the bent portion 71. That is, the tank mounting bracket 67 is bent in a crank shape in a side view along the upper side and the front side of the return pipe 65, and is provided so as to avoid the return pipe 65. Further, the mounting portion 72 is detachably mounted and connected to a rear mounting base 73 provided to protrude rearward from the frame mounting base 44 by bolting. Therefore, the front side of the hydraulic oil tank 61 is fixed on the upper swing body 4 by the tank mounting bracket 67.
[0027]
Further, a pair of rib plate-shaped front support portions 74 are welded to the tank mounting bracket 67 on the front side surface of the bent portion 71, respectively. These front support portions 74 are bent in an L-shape from the distal end side of a front weld portion 75 welded along the front side surface of the bent portion 71 to the front of the body 5. The upper side surface is substantially flush with the upper side surface of the support portion 69 of the tank mounting bracket 67. Further, the front end sides of the front support portions 74 are provided so as to extend forward to the center region in the width direction of the leg portions 35, respectively.
[0028]
A battery space 76 as a battery space portion is formed above the support portion 69 of the tank mounting bracket 67. Inside the battery space 76, a tank space 76 is provided inside the edge frame 36 of the seat frame 32. Power is supplied to the starter motor of the engine 52, the controller, various sensors, the instrument of the hydraulic excavator 1, or the electrical unit such as the light from the front side on the support unit 69 of the mounting bracket 67 to the front support unit 74. A battery 77 as a battery is mounted.
[0029]
As shown in FIG. 2, the battery 77 is formed in a substantially rectangular shape having a longitudinal direction in the width direction of the body 5, and formed inside the seat frame 32, that is, the mounting frame 41 and the support frame 34. It is removably accommodated in the battery space 76 of the space 51 to be formed. The engine 77 is started by the battery 77, and the battery 77 is charged by a generator (not shown) driven by the engine 52.
[0030]
As shown in FIG. 1, the battery 77 is mounted with its front side surface substantially flush with the front end of the front support 74, and the upper side of the battery 77 is positioned above the hydraulic oil tank 61. And is located almost flush.
[0031]
Further, as shown in FIGS. 1 and 2, the tank mounting bracket 67 corresponds to the position of the rear side surface that is the lower side of the battery 77 and the position of the front support portion 74 in the width direction of the body 5. A pair of rib plate-shaped contact portions 81 are welded to the upper surface of the support portion 69 to be provided integrally. These abutting portions 81 are bent in an L-shape substantially perpendicularly to the support portion 69 from respective welded portions 82 which are separated from each other in the width direction of the battery 77 and welded to the upper surface of the support portion 69. .
[0032]
The upper ends of the contact portions 81 are provided so as to extend to a position substantially flush with the upper end of the mounting base end 68 of the tank mounting bracket 67. Further, when the battery 77 is placed on the tank mounting bracket 67, these contact portions 81 abut against the rear side surface of the battery 77 to support the rear side surface of the battery 77.
[0033]
Further, on the upper front side of the battery 77, an upper support bracket 83 as an upper support member is attached to a support portion 69 of the tank mounting bracket 67 by a pair of bolts 84 and nuts 85, which are wires as fixing members.
[0034]
Here, the upper support bracket 83 is arranged such that the upper side of the upper side of the battery 77 is opposite to the upper side of the battery 77 with respect to the contact portion 81 of the tank mounting bracket 67, and the front side of the upper side of the battery 77 is It is bent in an L-shape over the upper side.
[0035]
The upper support bracket 83 has a longitudinal direction in the width direction of the battery 77 and is formed to have a longitudinal dimension larger than the width of the battery 77. That is, as shown in FIGS. 2 and 3, the upper support bracket 83 projects from the battery 77 in the width direction of the battery 77 when attached to the upper side of the battery 77.
[0036]
Further, the upper support bracket 83 has an arc-shaped notch formed at a position corresponding to a pair of substantially columnar terminals 86 protruding above the battery 77.
[0037]
As shown in FIG. 3, the pair of bolts 84 are respectively inserted into through holes (not shown) provided at both ends in the longitudinal direction of the bent portion of the upper support bracket 83. It extends substantially diagonally from the upper side to the lower side toward the contact portion 81. That is, as shown in FIG. 1, the pair of bolts 84 incline downward toward the rear of the body 5 from the upper front corner of the battery 77 to the vicinity of the lower rear corner thereof in a side view. 77.
[0038]
Further, as shown in FIG. 3, a lower end, which is one end of each bolt 84, is provided on a front side of the contact portion 81 near the contact portion 81 of the support portion 69 of the tank mounting bracket 67. A bent portion 88 is provided, which is inserted into each of the elongated mounting holes 87 and bent to the front side of the body 5 below the mounting holes 87 at an acute angle. The upper end, which is the other end of the bolt 84, is detachably attached to the upper support bracket 83 by a nut 85, as shown in FIGS. 1 and 2.
[0039]
As a result, the upper support bracket 83 is fixed to the support portion 69 of the tank mounting bracket 67 by the bolts 84 and the nuts 85 and is in contact with the upper part and the front part of the battery 77. The battery 77 is sandwiched and supported between the contact portion 81 in the up-down direction and the front-rear direction.
[0040]
Further, plate-shaped connection ribs 91 as connection members are welded to the front side surface of the hydraulic oil tank 61 at two places. Each of these connection ribs 91 is formed to be bent in a crank shape, one of which is attached above the tank mounting bracket 67 so as to be inclined with respect to the horizontal direction, and the other is provided on the front side surface of the hydraulic oil tank 61. Mounted vertically on top. These connection ribs 91 extend rearward of the abutting portion 81 of the tank mounting bracket 67, and a plate-shaped rear bracket 92 is provided on the bent front end side of these connection ribs 91 such as bolts (not shown). Attached through.
[0041]
The rear bracket 92 is disposed so as to face the entire rear surface of the battery 77, and an end of the engine 52 on the engine 52 side is bent forward in an L shape along the side surface of the battery 77 on the engine 52 side. I have.
[0042]
A pair of through holes 93 is provided on the side of the battery 77 in the edge frame 36 shown in FIG. 1, and a plate-shaped side cover bracket (not shown) is bolted to these through holes 93 to be detachable. By attaching, the entire side surface of the battery 77 is covered.
[0043]
Further, as shown in FIGS. 2 and 3, the battery 77 is positioned in front of a front opening 94 formed by a front portion of the frame 33 of the seat frame 32 and a pair of front legs 35. It is housed facing the side. The lower end of the front opening 94 is substantially flush with the upper surface of the support portion 69 of the tank mounting bracket 67, and the upper end is cut out from the front side to the upper side of the frame 33 of the battery 77. I have.
[0044]
Further, a covering bracket 95 as a covering member is detachably attached to the upper end of the front opening 94 with a bolt or the like. The covering bracket 95 covers the entire upper portion of the front opening 94, and the lower end covers a part of the terminal 86 of the battery 77 in plan view. That is, since a part of the front opening 94 is closed by the covering bracket 95, the battery 77 can be removed from the front opening 94 by removing the covering bracket 95 from the front opening 94.
[0045]
A flat battery cover 96 as a cover as an opening / closing member is directly attached to the front opening 94 so as to be freely opened and closed. This battery cover 96 covers and protects mainly the battery 77 housed in the seat frame 32 in a plan view.
[0046]
The lower end of the battery cover 96 is connected to a hinge body 97 attached below the front leg 35 of the seat frame 32, and the upper end of the battery cover 96 is connected to the lower end of the covering bracket 95. The front opening 94 is closed by being abutted on this portion and locked by the covering bracket 95.
[0047]
On the other hand, on the upper side of the seat frame 32 of the power device housing unit, a driver seat 101 as a seat where an operator who is a driver who operates and operates the hydraulic shovel 1 sits rearward by a driver seat hinge body 102. It is attached so as to be rotatable toward. By rotating the driver's seat 101 rearward, an upper opening 103 formed by the frame 33 of the seat frame 32 is opened and closed.
[0048]
Further, a control valve (not shown) as a control valve is mounted below the foot of the operator sitting on the driver's seat 101 on the upper swing body 4, that is, on the upper swing body 4 in front of the hydraulic oil tank 61. The control valve includes various hydraulic motors such as a travel motor for traveling the lower traveling body 2 and a swing motor for rotating the upper swing body 4, and various hydraulic motors for the boom swing cylinder, the boom cylinder 21, the arm cylinder 22, and the bucket cylinder 23. The hydraulic oil to be supplied under pressure from the main pump 53 to the cylinder is controlled.
[0049]
As a result, by controlling the operations of these various hydraulic motors and various hydraulic cylinders, the lower traveling body 2 travels, the upper revolving superstructure 4 turns, and the front work device 13 is operated.
[0050]
The control valve is connected to a return pipe 65 via a return hose (not shown), and return oil is returned to the return pipe 65 from the control valve.
[0051]
Next, the operation and effect of the embodiment shown in FIGS. 1 to 4 will be described.
[0052]
By arranging the battery 77 over the support part 69 and the front support part 74 of the tank mounting bracket 67 for fixing the hydraulic oil tank 61 on the upper revolving unit 4, the tank mounting bracket 67 is connected to the hydraulic oil tank 61 and the battery. In addition to being able to be used for supporting the battery 77, the mounting structure of the battery 77 can be simplified as compared with a case where a battery chamber or the like for disposing the battery 77 is separately provided in the seat frame 32, and the tank mounting bracket 67 can be used. Since the upper battery space 76 is effectively used, a space for separately providing a battery room and the like is not required in the seat frame 32, so that the space within the seat frame 32 can be saved, and the size of the machine body 6 can be reduced. Become.
[0053]
Further, a contact portion 81 is provided on the support portion 69 of the tank mounting bracket 67 to contact the lower rear surface of the battery 77 to support the battery 77, and the upper support bracket 83 supporting the battery 77 is mounted on the battery 77. The battery 77 is disposed between the contact portion 81 and the upper support bracket 83 between the contact portion 81 and the upper support bracket 83 by being provided over the front side portion and the upper portion of the front side surface and attached to the support portion 69 of the tank mounting bracket 67 by the bolt 84. Since the side, the front side and the rear side can be clamped and fixed, the battery 77 can be prevented from moving due to the vibration caused by the operation of the front working device 13 and the vibration of the engine 52.
[0054]
Further, a lower end of a bolt 84 provided diagonally from the upper side to the lower side on the side of the battery 77 is inserted into a mounting hole 87 on the front side of the contact part 81 of the support part 69 of the tank mounting bracket 67. A bent portion 88 is provided, which is bent and engaged with the edge of the mounting hole 87, and the upper support bracket 83 is fixed to the support portion 69 of the tank mounting bracket 67 with bolts 84 and nuts 85. As a result, when the vibration caused by the operation of the front working device 13 and the vibration of the engine 52 is applied to the battery 77, the force applied to the upper support bracket 83 is transferred to the contact portion of the tank mounting bracket 67 via the bolt 84. Since the battery 77 is supported in the vicinity, the battery 77 can be more securely sandwiched and fixed between the contact portion 81 and the upper support bracket 83.
[0055]
Since the upper end of the bolt 84 is detachably attached to the upper support bracket 83 with the nut 85, the upper support bracket 83 can be easily removed, and maintenance or replacement of the battery 77 can be facilitated.
[0056]
As another embodiment, a configuration in which the contact portion 81 of the tank mounting bracket 67 is provided at another position such as the front side of the battery 77 where movement of the battery 77 of the tank mounting bracket 67 can be suppressed is also possible.
[0057]
Further, as still another embodiment, a configuration in which the upper support bracket 83 is attached to the leg 35 or the like is also possible.
[0058]
【The invention's effect】
According to the first aspect of the present invention, a battery for supplying electric power to the electrical unit is provided on a tank support member for fixing a working fluid tank storing working fluid supplied to and discharged from a fluid pressure actuator. The tank support member can be used for supporting the working fluid tank and the battery, and the mounting structure of the battery can be simplified as compared with a case where a battery chamber or the like for disposing the battery is separately provided, and the space on the tank support member can be reduced. The space can be saved because a space for separately providing a battery room or the like is not required in the machine main body because of the effective use of the battery.
[0059]
According to the second aspect of the present invention, the tank support member is provided with a contact portion that contacts the lower side portion of the battery and supports the lower side portion of the battery, and contacts the upper portion and the side portion of the battery. By disposing the upper support member for supporting the upper and side parts of the battery from the side opposite to the upper part of the battery from the contact part to the upper part, the battery is opposed to the contact part and the upper support member. Since the side, upper and lower portions of the battery can be clamped and fixed, the movement of the battery due to the vibration of the working device and the vibration of the engine can be suppressed.
[0060]
According to the third aspect of the present invention, one end of the fixing member is attached to the vicinity of the contact portion of the tank support member, and the other end is detachably attached to the upper support member. By fixing the upper support member to the tank support member with the provided fixing member, the force applied to the upper support member when the force generated by the vibration of the operation device and the vibration of the engine acts on the battery. Since the battery is supported in the vicinity of the contact portion of the tank support member via the fixing member, the battery can be more securely sandwiched and fixed between the contact portion and the upper support member, and the other end of the fixing member can be attached to and detached from the upper support member. By being attached as much as possible, the upper support member can be removed to facilitate maintenance or replacement of the battery.
[Brief description of the drawings]
FIG. 1 is a side view showing a part of an embodiment of a work machine according to the present invention.
FIG. 2 is a front view showing a part of the working machine.
FIG. 3 is a perspective view showing a part of the working machine.
FIG. 4 is a side view showing the working machine.
[Explanation of symbols]
1 Hydraulic excavator 6 as working machine 6 Machine body 13 Front working device 21 as working device Boom cylinder 22 as fluid pressure actuator Arm cylinder 23 as fluid pressure actuator Bucket cylinder 61 as fluid pressure actuator 61 Working oil as working fluid tank Tank 67 Tank mounting bracket 77 as a tank support member Battery 81 as a battery Contact portion 83 Upper support bracket 84 as an upper support member Bolt as a fixing member

Claims (3)

Machine body,
A working device operable by a hydraulic actuator,
A tank support member provided in the machine body,
A working fluid tank fixed to the tank support member and storing a working fluid supplied to and discharged from the fluid pressure actuator;
A work machine, comprising: a battery provided on a tank support member, for supplying power to an electrical unit. The tank support member includes a contact portion that contacts and supports the lower side of the battery,
The contact portion is disposed from the side opposite to the upper portion of the battery to the upper portion, and contacts the upper portion and the side portion of the battery to support the upper portion and the side portion of the battery. The work machine according to claim 1, further comprising an upper support member that holds the battery. It is provided substantially diagonally from the upper side to the lower side on the side of the battery, one end is attached near the contact portion of the tank support member, the other end is detachably attached to the upper support member, and the upper support 3. The working machine according to claim 2, further comprising a fixing member for detachably fixing the member.

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