JP2010084446A - Machine room for construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine room for a construction machine improving work efficiency in attaching/detaching a protective cover. <P>SOLUTION: An engine room 6 of a hydraulic shovel 1 is a machine room provided at a swivel base 3 of the hydraulic shovel 1 and includes an outer frame 61, a plurality of batteries 33, 35, a battery protective cover 37 and a cover holding part 38. The outer frame 61 includes an opening 63. The plurality of batteries 33, 35 are arranged in a line in the longitudinal direction of the batteries 33, 35 inside the outer frame 61. The battery protective cover 37 is wider in width than the opening 63 of the outer frame 61. The cover holding part 38 can hold the battery protective cover 37 inside the outer frame 61. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a machine room of a construction machine, and more particularly, to a machine room of a construction machine having a protective cover attached to an upper part of a battery.

  A construction machine such as a hydraulic excavator includes, for example, a lower traveling body, a swivel base, a work machine, an engine room, an equipment room, and a cab. The lower traveling body has crawler belts wound around the left and right ends of the traveling direction. The swivel can be swung in any direction on the lower traveling body, and has a work machine, an engine room, and a cab mounted on the upper surface. The work machine is composed of a boom, an arm, a bucket, and the like. The engine room is disposed at the rear end of the swivel, and forms a storage space for the engine and the like inside. In the storage space, an engine, an aftercooler, and the like, which are power sources for driving the lower traveling body and the work machine, are stored. A battery is also disposed in the storage space of the engine room.

A protective cover is provided on the upper surface of the battery. The protective cover protects the terminal on the upper surface of the battery from dust and oil (see Patent Document 1).
JP 2004-152524 A (published May 27, 2004)

However, in the machine room of the conventional construction machine, the following problems may not be solved depending on the situation.
In recent years, as the capacity of the battery has increased, the protective cover of the battery has also increased in size. Therefore, not only the work for attaching and detaching the protective cover becomes complicated, but also the place where the removed protective cover is placed may be troubled. In addition, if the protective cover must be removed and placed at a location far from the construction machine, it may be forgotten to attach the protective cover to the battery again.

  The subject of this invention is providing the machine room of the construction machine which can improve the efficiency of the operation | work at the time of attachment or detachment of a protective cover.

  The machine room of the construction machine according to the first invention is a machine room provided on the swivel of the construction machine, and includes an exterior frame, a plurality of batteries, a battery protection cover, and a cover holding part. Yes. The exterior frame has an opening. The plurality of batteries are arranged in a line in the longitudinal direction of the battery inside the exterior frame. The battery protective cover is wider than the opening of the exterior frame. The cover holding part can hold the battery protection cover in the exterior frame.

  In the machine room of the construction machine, when the operator removes the battery protection cover from the plurality of batteries, the worker can next hold the battery protection cover on the cover holding portion. Thereby, the battery protection cover is held in the exterior frame. In this case, since it is not necessary to take the battery protection cover out of the outer frame, the work efficiency when the battery protection cover is attached / detached is improved.

In the machine room of this construction machine, the battery protection cover is enlarged to cover a plurality of batteries arranged in a line in the longitudinal direction. However, since it is not necessary to take the battery protection cover out of the exterior frame, the efficiency of work when the battery protection cover is attached or detached is improved.
In the machine room of this construction machine, since the battery protection cover is wider than the opening of the exterior frame, it is relatively difficult to take out the battery protection cover from the opening of the exterior frame. However, since it is not necessary to take the battery protection cover out of the exterior frame, the work efficiency when the battery protection cover is attached / detached is improved.

The machine room of the construction machine according to the second invention is the machine room of the construction machine according to the first invention, wherein the cover holding part is a rotation support part that rotatably supports the battery protection cover, and a battery. A contact portion for supporting the battery protection cover in an oblique state so that the front side of the worker is higher than the heel side by contacting a part of the protection cover.
In the machine room of the construction machine, the battery protection cover is supported in an oblique state while a part of the battery protection cover is in contact with the contact portion while being rotatably supported by the rotation support portion of the cover holding portion. As a result, the battery protection cover does not interfere with the work when the worker performs the battery replacement / repair work. In particular, since the battery protection cover is supported obliquely so that the front side of the operator is higher than the back side, a sufficient space for the operator to put his head can be secured. Therefore, workability is improved.

  The machine room of the construction machine according to the third invention is the machine room of the construction machine according to the second invention and has the following configuration. The rotation support portion is provided on the exterior frame. The battery protection cover has a cover main body and a hook-shaped locking portion that is provided on the cover main body and that is partially opened and locked to the rotation support portion, and is provided with respect to the vertical line. The angle formed by this is about 45 degrees in side view.

  In the machine room of this construction machine, since the battery protection cover is supported obliquely so that the angle formed by the battery protection cover with respect to the vertical line is about 45 degrees in a side view, a space for the operator to put his head Can be secured sufficiently. Therefore, workability is improved.

The machine room of the construction machine according to the fourth invention is the machine room of the construction machine according to any of the first to third inventions, wherein the plurality of batteries are embedded in the upper surface of the swivel base. Has been placed.
In the machine room of the construction machine, since a plurality of batteries are embedded in the upper surface of the swivel base, the space above the upper surface of the swivel base is not occupied by the battery. Therefore, workability when an operator attaches and detaches the battery protection cover is good.

  According to the machine room of the construction machine according to the present invention, the efficiency of work at the time of attaching and detaching the battery protection cover is improved.

[Embodiment 1]
A hydraulic excavator 1 equipped with a cab of a construction machine that employs a hinge structure according to an embodiment of the present invention will be described with reference to FIG.
[Configuration of hydraulic excavator 1 as a whole]
As shown in FIG. 1, a hydraulic excavator 1 according to the present embodiment includes a lower traveling body 2, a swivel base 3, a work implement 4, a counterweight 5, an engine room 6, an equipment room 9, and a cab 10. And.

The lower traveling body 2 has the crawler belt P wound around the left and right ends of the traveling direction rotated to move the excavator 1 forward and backward, and the swivel base 3 is mounted on the upper surface side in a swingable state. .
The swivel base 3 can be swung in any direction on the lower traveling body 2 and has a work machine 4, a counterweight 5, an engine room 6, and a cab 10 mounted on the upper surface.

  The work implement 4 is configured to include a boom 11, an arm 12 attached to the tip of the boom 11, and a bucket 13 attached to the tip of the arm 12. The work machine 4 is a civil engine that excavates earth and sand and gravel while moving the boom 11, the arm 12, the bucket 13 and the like up and down by the hydraulic cylinders 11a, 12a and 13a included in a hydraulic circuit (not shown). Work at the construction site.

The counterweight 5 is made of, for example, scrap iron or concrete in a box formed by assembling steel plates and is hardened. The counterweight 5 is an engine room 6 on the swivel 3 for balancing the vehicle body during mining. It is provided behind.
The engine room 6 is disposed at the rear end portion of the swivel base 3 on a main frame (not shown) so as to be adjacent to the counterweight 5, and forms a storage space for the engine or the like therein. In the storage space, an engine, an aftercooler, and the like, which are power sources for driving the lower traveling body 2 and the work machine 4 are arranged.

The equipment room 9 is disposed behind the work machine 4 and houses a fuel tank, a hydraulic oil tank, an operation valve, and the like (not shown).
The cab 10 is a driver's cab in which an operator of the excavator 1 gets on and off, and is disposed on the left front side on the swivel 3 so that the tip of the work machine 4 can be seen. . Further, as shown in FIG. 1, a passenger door 20 that can be opened and closed with a hinge as a rotation center is attached to the left side surface of the cab 10.

[Battery structure]
(A) Basic structure In the following description, description of directions, such as a vehicle front-back direction and a vehicle left-right direction, presupposes that the swivel base 3 is in a normal position.
The battery structure 31 is provided on the swivel base 3, and more specifically, is disposed in the engine room 6. The battery structure 31 is disposed in the vicinity of a side panel 32 (FIG. 1) attached to an exterior frame 61 (described later). Therefore, the operator can easily access the battery structure 31 from the opening 63 of the exterior frame 61 with the side panel 32 opened. In this embodiment, the battery structure 31 is disposed in the engine room 6 on the left side of the vehicle.

The battery structure 31 includes a pair of batteries 33 and 35, a battery protection cover 37, and a cover holding part 38. 7 and 9 show a state where the battery protection cover 37 is attached to the pair of batteries 33 and 35 and a state where the battery protection cover 37 is held by the cover holding portion 38 in one drawing.
As shown in FIG. 3, the pair of batteries 33 and 35 are arranged side by side in the front-rear direction of the vehicle. The batteries 33 and 35 are arranged in a line in the longitudinal direction and are connected to each other by a wiring 41.

  As shown in FIGS. 2 and 7, the battery protection cover 37 is detachably provided on the upper parts of the batteries 33 and 35. The battery protection cover 37 is a thin plate member made of resin. As shown in FIGS. 2, 4, and 6, the battery protection cover 37 has a shape that extends long in the front-rear direction of the vehicle. Since the battery protection cover 37 is made of resin, weight reduction is realized, and the battery protection cover 37 can be supported on the exterior frame 61 as described later.

The battery protection cover 37 has a cover main body 43 and a locking portion 45.
As shown in FIGS. 4 to 6, the cover body 43 includes an upper surface portion 43a, a long side wall portion 43b on the front side, a long side wall portion 43c on the heel side, a short side wall portion 43d on the front side, and a rear side. And a short side wall 43e on the side.
The locking part 45 is a pair of members, and is formed on the outer side surface of the long side wall part 43b on the near side, as shown in FIGS. As shown in FIG. 6, the locking portion 45 has a hook shape in which a part thereof is open, extends from the long side wall portion 43 b on the near side to the near side, and then bends downward on the far side. It extends to.

  Next, a fixing structure for removably fixing the battery protection cover 37 to the batteries 33 and 35 will be described. As shown in FIG. 2 and FIG. 7, a plate-like holder 51 fixed to a battery support (not shown) is attached to the batteries 33 and 35 with bolts 53. The holder 51 includes a holder main body 51 a and a fixing portion 51 b that extends from the holder main body 51 a and is fixed to the upper surfaces of the batteries 33 and 35 by the bolt 53. Thereby, the batteries 33 and 35 are fixed at predetermined positions. Furthermore, the tip of the bolt 53 extends upward from the batteries 33 and 35, and extends upward through a hole 43 g formed in the cover main body 43 of the battery protection cover 37. The nut 55 is screwed onto the tip of the bolt 53 to fix the battery protection cover 37 to the upper surfaces of the batteries 33 and 35. In this state, the upper surface portion 43a of the cover main body 43 of the battery protection cover 37 covers the upper surfaces of the batteries 33 and 35, and the long side wall portion 43b on the near side, the long side wall portion 43c on the heel side, The short side wall 43d and the rear short side wall 43e cover the entire upper portion of the side walls of the batteries 33 and 35. As a result, the terminals of the batteries 33 and 35 are protected from dust and oil.

Note that the nut 55 is made of resin, and therefore, the operability is not easily lowered due to rust.
As shown in FIGS. 7 to 9, the exterior frame 61 has an opening 63 with the side panel 32 (FIG. 1) removed. As shown in FIG. 9, the opening 63 is between the front frame 61 a and the rear frame 61 b in the vehicle front-rear direction. The width of the opening 63 (the longitudinal length of the vehicle) is the distance between the front frame 61 a and the rear frame 61 b, which is shorter than the width of the battery protection cover 37.

  The cover holding portion 38 has a structure that allows the battery protection cover 37 to be held in the exterior frame 61, and includes a rotation support portion 39 and a contact portion 40. The rotation support part 39 supports the battery protection cover 37 in a freely rotatable manner. The abutting portion 40 abuts against a part of the battery protection cover 37 to support the battery protection cover 37 in an oblique state such that the front side of the operator is higher than the heel side. The contact portion 40 includes an inner side surface 61c of the front frame 61a and the rear frame 61b.

  As shown in FIG. 11, the battery protection cover 37 is supported by the cover holding portion 38 so that the angle formed by the battery protection cover 37 with respect to the vertical line is about 45 degrees in a side view. In FIG. 11, the lower edge 43f of the battery protection cover 37 forms an angle of about 45 degrees with respect to the vertical line. By maintaining such an angle, it is possible to secure a sufficient space for the human head to enter even at a position where the depth length for the battery protection cover 37 is limited.

  The rotation support part 39 is fixed to the exterior frame 61 as shown in FIG. The rotation support part 39 is a pair of members, and is provided on the front frame 61a and the rear frame 61b. Each rotation support portion 39 is formed by bending a thin rod-like member. As shown in FIGS. 8 and 10, the upper first bar 39a extending from the frames 61a and 61b to the vehicle inner side, and the frames 61a and 61b. A lower first bar 39b extending from the upper first bar 39a to the vehicle front-rear direction, and a lower second bar 39d extending from the lower first bar 39b to the vehicle front-rear direction. And a vertical bar 39e that connects the upper second bar 39c and the lower second bar 39d. The lower second bar 39d extends horizontally in the vehicle front-rear direction. Further, the lower second bar 39d is located on the vehicle inner side as viewed from the operator by a predetermined distance from the inner surfaces of the front frame 61a and the rear frame 61b.

(B) Battery Protection Cover Attaching / Removal Operation When removing the battery protection cover 37, the operator turns the nut 55 to remove it, so that the battery protection cover 37 can be removed from the batteries 33 and 35. Next, the operator moves the battery protection cover 37 upward in the exterior frame 61, that is, in the engine room 3. At this time, the worker moves the battery protection cover 37 upward in a state where the long side wall portion 43b on the near side is higher than the long side wall portion 43c on the vehicle rear side as viewed from the worker. This is an operation required when the opening 63 above the batteries 33 and 35 is narrow and the length of the battery protection cover 37 in the vehicle left-right direction is substantially the same as or narrower than the vehicle length space of the opening 63. is there. Next, the operator causes the locking portion 45 to approach the rotation support portion 39 of the cover holding portion 38 from the back side toward the front side, and the locking portion 45 is moved to the second lower side of the rotation support portion 39. Hook on bar 39d. Due to this locking relationship, the battery protection cover 37 is rotatable with respect to the exterior frame 61. When the operator removes his / her hand from the battery protection cover 37 after the locking, the battery protection cover 37 is rotated by its own weight, and as shown in FIGS. The lower end contacts the contact portion 40 (the inner side surface 61c of the front frame 61a and the rear frame 61b). Due to the above-described configuration of the locking portion 45 and this contact, the rotation of the battery protection cover 37 is stopped, and the battery protection cover 37 is supported by the exterior frame 61 in that state. More specifically, as shown in FIGS. 7 and 8, the front side long side wall 43b of the cover main body 43 is located higher than the long side side wall 43c on the back side. In other words, the cover main body 43 is held in the exterior frame 61 with an oblique posture of about 45 degrees. In this state, the long side wall portion 43 c on the back side of the cover main body 43 is sufficiently separated from the upper surfaces of the batteries 33 and 35. Due to the arrangement and orientation of the battery protection cover 37 described above, a sufficient space for various operations is secured above the batteries 33 and 35. Further, as shown in FIG. Since the opening is widest even in the space, the operator can put the head in the exterior frame 61. In particular, since the front side of the battery protection cover 37 is raised, the battery protection cover 37 does not prevent the operator's head from entering or obstruct the field of view.

[Features of this embodiment]
(A)
The engine room 6 of the excavator 1 is a machine room provided on the swivel 3 of the excavator 1, and includes an exterior frame 61, a plurality of batteries 33 and 35, a battery protection cover 37, and a cover holding unit 38. have. The exterior frame 61 has an opening 63. The plurality of batteries 33 and 35 are arranged in a line in the longitudinal direction of the batteries 33 and 35 inside the exterior frame 61. The battery protection cover 37 is wider than the opening 63 of the exterior frame 61. The cover holding unit 38 can hold the battery protection cover 37 in the exterior frame 61.

  In this structure, when the operator removes the battery protection cover 37 from the plurality of batteries 33, 35, the operator can then hold the battery protection cover 37 on the cover holding portion 38. Thereby, the battery protection cover 37 is held in the exterior frame 61. In this case, since it is not necessary to take the battery protection cover 37 out of the exterior frame 61, the efficiency of work when the battery protection cover 37 is attached / detached is improved.

In this structure, the battery protection cover 37 is enlarged to cover the plurality of batteries 33, 35 arranged in a line in the longitudinal direction. However, since it is not necessary to remove the battery protection cover 37 from the exterior frame 61, the efficiency of work when the battery protection cover 37 is attached or detached is improved.
In this structure, since the battery protection cover 37 is wider than the opening 63 of the exterior frame 61, it is relatively difficult to take out the battery protection cover 37 from the opening 63 of the exterior frame 61. However, since it is not necessary to take the battery protection cover 37 out of the exterior frame 61, the efficiency of work when the battery protection cover 37 is attached / detached is improved.

(B)
The cover holding part 38 is in contact with a part of the battery protection cover 37 and a rotation support part 39 that rotatably supports the battery protection cover 37, so that the front side of the battery protection cover 37 is higher than the heel side. In this way, the contact portion 40 is supported in an oblique state.
In this structure, the battery protection cover 37 is supported by the rotation support part 39 of the cover holding part 38 so as to be rotatable, while part of the battery protection cover 37 is supported by the contact part 40 and supported in an oblique state. As a result, the battery protection cover 37 does not interfere with the work when the worker performs work for replacing or repairing the batteries 33 and 35. In particular, since the front side of the battery protection cover 37 is supported obliquely so as to be higher than the back side, a sufficient space for the operator to put his head can be secured. Therefore, workability is improved.

(C)
The rotation support part 39 is provided on the exterior frame 61. The battery protection cover 37 includes a cover main body 43 and a hook-shaped locking portion 45 that is provided in the cover main body 43 and that is partially opened and locked to the rotation support portion 39. On the other hand, the angle formed by the battery protection cover 37 is about 45 degrees in a side view.

  In this structure, since the battery protection cover 37 is supported obliquely so that the angle formed by the battery protection cover 37 with respect to the vertical line is about 45 degrees in a side view, there is sufficient space for the operator to put his head. Can be secured. Therefore, workability is improved.

(D)
The plurality of batteries 33 and 35 are arranged in a state of being embedded in the upper surface of the swivel base 3.
In this structure, since the plurality of batteries 33 and 35 are embedded in the upper surface of the swivel base 3, a space above the upper surface of the swivel base 3 is not occupied by the batteries 33 and 35. Therefore, the workability when the worker attaches / detaches the battery protection cover 37 is good.

(E)
A radiator (not shown) is disposed on the left side of FIG. 7, for example. The air flows from the batteries 33 and 35 to the left side of the figure. That is, the plurality of batteries 33 and 35 are disposed upstream of the radiator in the air flow direction.
In this structure, although the batteries 33 and 35 are arranged on the upstream side of the radiator in the air flow direction, the batteries 33 and 35 do not occupy the space above the upper surface of the swivel 3, so that the air flow to the radiator is obstructed. Not.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.
(A)
In the above-described embodiment, an example in which the machine room of the construction machine according to the present invention is employed for the engine room 6 provided on the swivel mounted on the excavator 1 has been described. However, the present invention is not limited to this.
For example, the machine room of the construction machine according to the present invention may be adopted for a machine room mounted on another construction machine such as a crane truck, a bulldozer, a wheel loader, or a motor grader.

  The machine room of the construction machine according to the present invention can be widely applied to the machine room of the construction machine because it has the effect of improving the work efficiency when the battery protection cover is attached and detached.

1 is a perspective view showing the overall configuration of a hydraulic excavator equipped with a cab that employs a battery structure according to an embodiment of the present invention. It is a top view of the battery structure which concerns on one Embodiment of this invention. It is a top view of a battery. It is a top view of a battery protective cover. It is a front view of a battery protective cover. It is a side view of a battery protection cover. It is a side view of the battery structure which shows the state which latched the battery protective cover to the cover holding part. It is the elements on larger scale of FIG. 7, and is a figure which shows the latching state of a battery protective cover. It is a front view of the battery structure which shows the state which latched the battery protective cover to the cover holding part. It is the elements on larger scale of FIG. 9, and is a figure which shows the latching state of a battery protective cover. It is the elements on larger scale of FIG. 8, and is a figure which shows the latching state of a battery protective cover.

Explanation of symbols

1 Excavator (construction machine)
2 Lower traveling body 3 Turntable 4 Working machine 5 Counterweight 6 Engine room (machine room)
9 Equipment Room 10 Cab 11 Boom 11a Hydraulic Cylinder 12 Arm 12a Hydraulic Cylinder 13 Bucket 13a Hydraulic Cylinder 20 Entry / Exit Door 31 Battery Structure 33, 35 Battery 37 Battery Protection Cover 38 Cover Holding Part 39 Rotation Supporting Part 39a Upper First Bar 39b Lower first bar 39c Upper second bar 39d Lower second bar 39e Vertical bar 40 Abutting portion 41 Wiring 43 Cover body 43a Upper surface portion 43b Front side long side wall portion 43c Back side long side side wall portion 43d Front side Short side wall portion 43e Short side wall portion 45 on the rear side Locking portion 51 Holder 51a Holder body 51b Fixing portion 53 Bolt 55 Nut 61 Exterior frame 61a Front frame 61b Rear frame 61c Inner side surface 63 Opening portion

Claims (4)

A machine room provided on a swivel of a construction machine,
An exterior frame having an opening;
Inside the exterior frame, a plurality of batteries arranged in a row in the longitudinal direction of the battery,
A battery protection cover wider than the opening of the exterior frame;
A cover holding portion capable of holding the battery protection cover in the exterior frame;
Including machine room of construction machinery.   The cover holding part is configured to turn the battery protection cover so that the battery protection cover is higher than the heel side by contacting a part of the battery protection cover with a rotation support part that rotatably supports the battery protection cover. The machine room of the construction machine according to claim 1, further comprising a contact portion that is supported in an oblique state. The rotation support portion is provided on the exterior frame,
The battery protection cover has a cover main body and a hook-shaped locking portion that is provided on the cover main body and that is partially opened and locked to the rotation support portion. The machine room of the construction machine according to claim 2, wherein an angle formed by the battery protection cover is about 45 degrees in a side view. The machine room of the construction machine according to any one of claims 1 to 3, wherein the plurality of batteries are arranged in a state of being embedded in an upper surface of the swivel base.

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