JP5641983B2 - Work machine battery box - Google Patents

Description

  The present invention relates to a battery box for a work machine.

  A battery mounted on a work vehicle is protected from rainwater, dust, and the like by being housed in a battery box (battery case), for example. The battery case is provided with an inspection window for inspecting the liquid level of the battery, and the inspection window is provided with a cover that can be opened and closed to prevent intrusion of rainwater, dust, and the like (see Patent Document 1).

JP 2006-77495 A

  In the work vehicle described in the patent document described above, it is necessary to remove the battery case in order to replace the battery. Therefore, the battery case is configured to be easily detached from the work vehicle. Therefore, the battery may be stolen or tampered with.

(1) A battery box for a work machine according to the invention of claim 1 has a bottom plate, a pair of front and rear side plates, and a back plate, and has an opening through which a battery installed in a battery storage chamber can be taken in and out. A battery box main body, an upper plate, a horizontal plate bent in an L shape from the upper plate, a battery inspection window comprising an opening provided from the upper plate to the horizontal plate, and an inspection window. It has an inspection window lid that can be opened and locked, and can be attached to the battery box body to cover the opening. The battery box cover can be attached to and detached from the battery box body from the outside of the battery compartment. And an external fixing means for removably fixing the battery box cover to the battery box body inside the battery housing chamber. , The upper end of the side plate of the battery box main body, each having a first body-side contact part and a second body-side contact part, the front and rear end portions of the battery box cover upper plate, respectively, the battery A first main body side contact portion of the box body, a first cover side contact portion and a second cover side contact portion that contact the second main body side contact portion; The battery box cover mounting portion is provided at a substantially central portion in the front-rear direction of the battery box body, and a mounting portion is provided at a substantially central portion in the front-rear direction of the upper plate of the battery box cover .
(2) The invention of claim 2 is characterized in that, in the battery box of the working machine according to claim 1, the internal fixing means is provided in the vicinity of the inspection window.
(3) The invention of claim 3 is the battery box of the work machine according to claim 2, wherein the internal fixing means is a screw fastening member using a screw part, and the first cover side contact of the battery box cover And the first main body side abutting portion of the battery box main body abut against the second cover side contact of the battery box cover by prohibiting clockwise rotation about the screw axis of the screw fastening member. The contact portion and the second body-side contact portion of the battery box body are configured to contact and prohibit rotation in the counterclockwise direction about the screw axis of the screw fastening member. To do.
(4) According to a fourth aspect of the present invention, in the battery box of the work machine according to the third aspect, the distance from the screw fastening member to the first cover side contact portion, and the second cover side contact from the screw fastening member. The distance to the contact portion is substantially equal.
(5) The invention of claim 5, characterized in that in the battery box according to any one of claims 1 to 4, inspection window is open toward a portion of the front surface from a portion of the upper surface of the battery box cover , the projected area of the upper surface of the opening is smaller than the area of the upper surface of the placed battery into the battery box body, the projected area of the front openings, the front of the area of the battery mounted on the battery box main body It is characterized by being smaller than.

  According to the present invention, the battery inspection window can be opened and locked to be closed, and the battery box cover is detachably fixed to the battery box body inside the battery housing chamber. Theft can be deterred.

It is a side view of the wheel loader which is an example of a working machine. It is a top view of a wheel loader. It is a perspective view of a rear body. It is an exploded view of a battery box. It is a VV arrow sectional view of Drawing 1. It is an enlarged view of the section near the upper part of a battery box. It is a figure explaining that a battery box cover cannot be removed unless the volt | bolt in a battery storage chamber is removed.

  With reference to FIGS. 1-7, one Embodiment of the battery box of the working machine by this invention is described. FIG. 1 is a side view of a wheel loader that is an example of a work machine according to the present embodiment, and FIG. 2 is a plan view of the wheel loader 100. FIG. 3 is a perspective view of the rear vehicle body 120.

  The wheel loader 100 includes a front vehicle body 110 having an arm 111, a bucket 112, a tire 113, and the like, and a rear vehicle body 120 having an operation room 121, a machine room (engine room) 122, a cooler room 126, a tire 123, and the like. Is done. An engine room 122 to which an engine (not shown) is attached is covered with a building cover 130 and an engine hood 140. The engine hood 140 is provided with an intake pipe 145 for taking in air necessary for driving the engine from the outside, and a tail pipe 171 for exhausting exhaust gas.

  The cooler chamber 126 is provided behind the engine chamber 122 and is partitioned from the engine chamber 122 by a partition wall (not shown). The side surface of the cooler chamber 126 is covered with a part of the building cover 130 and the cooler building cover 132, and the upper surface of the cooler chamber 126 is covered with the cooler building cover 132. The cooler building cover 132 opens rearward. The opening portion is covered with a grill 200 attached to be openable and closable.

  A counterweight 124 is attached to the rear of the rear vehicle body 120. A hydraulic oil tank 125 is provided in front of the engine chamber 122. Battery boxes 300 (to be described later) are respectively attached to the left and right sides of the lower side of the rear body 120 and in front of the counterweight 124.

  The arm 111 is turned up and down (up and down) by driving the arm cylinder 117, and the bucket 112 is turned up and down (dumped or clouded) by driving the bucket cylinder 115. The front vehicle body 110 and the rear vehicle body 120 are pivotally connected to each other by a center pin 101, and the front vehicle body 110 is refracted left and right with respect to the rear vehicle body 120 by expansion and contraction of the steering cylinder 116. For convenience of explanation, the present embodiment defines the front-rear and left-right directions and the up-down direction as described in the respective drawings.

  The cooler chamber 126 is provided with an air cooling fan unit (not shown) including an air cooling fan and a fan shroud driven by a fan motor, and a radiator frame (not shown). The radiator frame includes a radiator (not shown) that cools the engine coolant, an oil cooler (not shown) for cooling the hydraulic oil, an intercooler (not shown) that cools the air pressurized by the engine supercharger, etc. Is attached.

--- About battery box 300 ---
4 is an exploded view of the battery box 300, FIG. 5 is a cross-sectional view taken along line VV in FIG. 1, and FIG. 6 is an enlarged view of a cross section near the upper portion of the battery box 300. As described above, the battery boxes 300 provided on the left and right sides of the wheel loader 100 have substantially symmetrical shapes on the left and right sides, and have the same structure. Therefore, in the following description, the battery box 300 provided on the left side of the wheel loader 100 will be described, and the description of the battery box 300 provided on the right side will be omitted. 4 and 5, reference numeral 305 denotes a battery.

  The battery box 300 has a substantially rectangular parallelepiped shape, and includes a battery box main body 310 and a battery box cover 330 attached to the battery box main body 310. The battery box main body 310 includes a bottom plate 311, a bottom plate bent portion 312, a side plate 313, a side plate bent portion 314, a top plate 315, and a back plate 317. In the battery box 300, a battery housing chamber 301 is formed by the battery box main body 310 and the battery box cover 330.

  The left end of the bottom plate 311 is bent substantially 90 degrees downward to form a bottom plate bent portion 312. That is, the bottom plate bent portion 312 exists below the bottom plate 311. Therefore, the front (that is, the left side) of the battery box body 310 is open. The bottom plate bent portion 312 is provided with a bolt hole 312a through which a bolt for attaching the battery box cover 330 passes.

  The side plates 313 are front and rear plates of the battery box main body 310. A portion of the upper end of the side plate 313 that is not connected to a top plate 315 to be described later is bent approximately 90 degrees inside the battery box 300 to form a side plate bent portion 314. The side plate bent portion 314 is provided with a bolt hole 314a through which a bolt for attaching the battery box cover 330 passes.

  The top plate 315 is a plate that covers the right side of the upper surface of the battery box main body 310, and is connected to the upper right end of the side plate 313 and the upper end of a back plate 317 described later. The left side of the top plate 315 is an opening at the top of the battery box main body 310. That is, the battery box body 310 is opened from the upper left side to the front. A battery box cover attaching portion 316 is provided near the left end of the lower surface of the top plate 315 and in the vicinity of the approximate center in the front-rear direction. As shown in FIG. 6, the battery box cover attaching part 316 has an L-shaped member 316a attached to the lower surface of the top plate 315, and a female screw part 316b attached to the member 316a.

  The back plate 317 is a plate that covers the back surface (that is, the right side) of the battery box main body 310. The back plate 317 is provided with a bolt hole 317a through which a bolt passes for attaching the battery box body 310 (battery box 300) to the rear vehicle body 120 (FIG. 4).

  The battery box cover 330 is a member having an inspection window 333 and bent into a substantially L shape. The left part bent in an L shape is called a horizontal plate 331, and the upper part is called an upper plate 332. Below the horizontal plate 331, a bolt hole 331a through which a bolt passes when the battery box cover 330 is attached to the battery box main body 310 is provided. The upper plate 332 is provided with a bolt hole 332a through which a bolt passes when the battery box cover 330 is attached to the battery box main body 310.

  The inspection window 333 is an opening provided from the vicinity of the right end of the upper plate 332 to the upper portion of the horizontal plate 331. An inspection window lid 334 is attached to the vicinity of the right end of the inspection window 333 via a hinge so as to be opened and closed. The inspection window lid 334 can be locked by a fastener (fastener) 335 with the inspection window 333 closed. The fastener 335 can be locked. That is, with the inspection window lid 334 locked with the fastener 335, the inspection window lid 334 can be locked by locking the fastener 335 through, for example, a padlock latch in the hole 335a shown in FIG.

  An attachment portion 336 is provided on the lower surface of the right end of the inspection window 333 and on the lower surface of the upper plate 332 substantially in the front-rear direction. The attachment portion 336 is an L-shaped member attached to the lower surface of the upper plate 332 as shown in FIG. 6, and is provided with a bolt hole 336a for allowing the bolt 352 to pass therethrough as shown in FIG. Yes.

  As shown in FIG. 5, the battery box main body 310 is fixed to the rear vehicle body 120 by inserting a bolt 120a protruding from the rear vehicle body 120 into the bolt hole 317a and screwing a nut 351 into the bolt 120a. . The battery box cover 330 is fixed to the battery box main body 310 with bolts 352 and 353. That is, the bolt 352 inserted through the bolt hole 336a of the attachment portion 336 is screwed into the female screw portion 316b of the battery box cover attachment portion 316, and the attachment portion 336 and the battery box cover attachment portion 316 are coupled. The bolt 353 is inserted into the bolt holes 331a and 312a, and the nut 354 is screwed as shown in FIG. 5 to fix the horizontal plate 331 to the bottom plate bent portion 312. The upper plate 332 is fixed to the side plate bent portion 314 by inserting the bolt 353 into the bolt holes 332a and 314a and screwing a nut (not shown).

  In the battery box 300 configured as described above, the battery 305 in the battery housing chamber 301 can be easily opened through the inspection window 333 by simply opening the inspection window lid 334 without removing the battery box cover 330 from the battery box main body 310. Can be checked. The projected area from the upper surface of the opening portion of the inspection window 333 is smaller than the area of the upper surface of the battery 305, and the projected area from the left side of the opening portion of the inspection window 333 is the front surface (left surface) of the battery 305. Smaller than the area. Therefore, the battery 305 cannot be removed simply by opening the inspection window lid 334, but the inspection window 333 is large enough to inspect the battery 305.

  By locking the fastener 335, it is prohibited to open the inspection window lid 334, and the inspection window 333 is closed and cannot be opened. Thus, unless the fastener 335 is unlocked, the battery box cover mounting portion 316 and the mounting portion 336 (that is, the bolt 352) in the battery storage chamber 301 cannot be accessed, and the bolt 352 cannot be removed. Thereby, the theft of the battery 305 can be prevented.

  Even if the bolt 353 attached to the outside of the battery box 300 is removed, the battery box cover attaching portion 316 and the attaching portion 336 are connected by the bolt 352, the side plate bent portions 314 on the front and rear sides of the battery box main body 310, and the battery box cover The front and rear end portions of the upper plate 332 of 330 are in contact with each other (see FIGS. 4 and 7). Therefore, as shown by an arrow A in FIG. 7, the battery box cover 330 cannot be rotated clockwise or counterclockwise in the drawing with the bolt 352 as a fulcrum (rotation center). That is, the battery box cover 330 is in contact with the side plate bent portion 314 of the battery box main body 310 and is prohibited from rotating clockwise and counterclockwise about the axis of the bolt 352.

  Further, the position of the battery box cover mounting portion 316, that is, the bolt 352 is near the approximate center of the battery box main body 310 in the front-rear direction. That is, the distance from the bolt 352 to the front side bent portion 314 of the battery box body 310 is substantially equal to the distance from the rear side bent portion 314. Therefore, as shown by the arrow A in FIG. 7, when the battery box cover 330 is to be pry open, the lever does not work and is not easily destroyed.

  In the battery box main body 310, a bolt 120a protruding from the rear vehicle body 120 is fixed to the rear vehicle body 120 by a nut 351 in the battery housing chamber 301 with respect to the bolt hole 317a. Accordingly, the nut 351 in the battery housing chamber 301 cannot be accessed unless the fastener 335 is unlocked, so that the battery box 300, that is, the battery 305 can be prevented from being stolen.

  The battery box cover 330 can be easily removed by removing the bolts 353 attached to the outside of the battery box 300, unlocking the fasteners 335, opening the inspection window lid 334, and removing the bolts 352. When the battery box cover 330 is removed, as shown in FIG. 4, the left side surface (front surface) of the battery box 310 and the left side opening of the upper surface are opened, and the battery 305 can be attached and detached. In addition, since the battery box cover attaching part 316 and the attaching part 336 are provided in the opening periphery vicinity of the inspection window 333, it is easy to access the volt | bolt 352 and attachment / detachment of the battery box cover 330 is easy.

---- Modified example ---
(1) In the above description, the battery box cover mounting portion 316 is provided with the female screw portion 316b and the bolt 352 is screwed together, that is, the battery box cover mounting portion 316 and the mounting portion 336 are coupled by the screw fastening member. However, the present invention is not limited to this. For example, a hole may be provided also in the battery box cover attaching portion 316, and a shaft-like member may be inserted into the hole and the bolt hole 336a of the attaching portion 336 so as to prevent the shaft-like member from coming off.

(2) In the above description, the position of the battery box cover mounting portion 316, that is, the bolt 352 is near the approximate center of the battery box main body 310 in the front-rear direction, but the present invention is not limited to this. For example, as shown by an arrow A in FIG. 7, if the battery box cover 330 is not easily broken even if it is to be opened, the position of the battery box cover mounting portion 316 may be shifted in the front-rear direction of the battery box main body 310. Further, a plurality of battery box cover attachment portions 316 and attachment portions 336 may be provided in the front-rear direction.

(3) In the above description, the battery box cover attaching portion 316 and the attaching portion 336 are provided in the vicinity of the opening periphery of the inspection window 333, but the present invention is not limited to this. For example, if the operator can easily attach and detach the bolt 352 from the inspection window 333 without being obstructed by the battery 305, the battery box cover attachment portion 316 and the attachment portion 336 are separated from the opening periphery of the inspection window 333. May be provided.
(4) You may combine each embodiment and modification which were mentioned above, respectively.

In addition, this invention is not limited to the thing of embodiment mentioned above at all, It has a baseplate, a pair of front and back sideplates, and a backplate, and has an opening part which can take in and out the battery installed in the battery storage chamber. A battery box body attached to the frame of the work machine, an upper plate, a horizontal plate bent in an L shape from the upper plate, and a battery inspection window comprising an opening provided from the upper plate to the horizontal plate , A battery box cover that has an inspection window lid that can be opened and locked and can be closed by locking, covers the opening by being attached to the battery box body, and the battery box cover from the outside of the battery housing chamber to the battery box body. An external fixing means for removably fixing the battery box, and an internal fixing means for removably fixing the battery box cover to the battery box body inside the battery housing chamber. For example, the upper end of the side plate of the battery box main body, each having a first body-side contact part and a second body-side contact part, the front and rear end portions of the battery box cover upper plate, respectively, The battery box main body has a first main body side contact portion, a first cover side contact portion that contacts the second main body side contact portion, and a second cover side contact portion. A battery box cover mounting portion provided at a substantially central portion in the front-rear direction of the battery box body and a mounting portion provided at a substantially central portion in the front-rear direction of the upper plate of the battery box cover are included.

DESCRIPTION OF SYMBOLS 100 Wheel loader 120 Rear vehicle body 122 Machine room (engine room) 124 Counterweight 126 Cooler room 300 Battery box 301 Battery storage room 305 Battery 310 Battery box main body 314 Side plate bending part 316 Battery box cover attaching part 330 Battery box cover 333 Inspection window 334 Inspection window lid 335 Fastener (fastener) 336 Mounting part 352, 353 Bolt

Claims (5)

A battery box body attached to the frame of the work machine, having a bottom plate, a pair of front and rear side plates, a back plate, and having an opening through which a battery installed in the battery storage chamber can be taken in and out;
An upper plate, a horizontal plate bent in an L shape from the upper plate, an inspection window of the battery comprising an opening provided from the upper plate to the horizontal plate, and the inspection window can be opened and locked and closed. A possible inspection window lid, and a battery box cover that is attached to the battery box body and covers the opening;
An external fixing means for removably fixing the battery box cover to the battery box body from the outside of the battery housing chamber;
An internal fixing means for removably fixing the battery box cover to the battery box body inside the battery housing chamber ;
The upper end of the side plate of the battery box main body has a first main body side contact portion and a second main body side contact portion, respectively.
The front and rear end portions of the upper plate of the battery box cover respectively have a first cover side abutment that abuts on the first main body side contact portion and the second main body side contact portion of the battery box main body. A contact portion and a second cover side contact portion,
The internal fixing means includes a battery box cover mounting portion provided at a substantially central portion in the front-rear direction of the battery box body, and a mounting portion provided at a substantially central portion in the front-rear direction of the upper plate of the battery box cover. work machine of the battery box, characterized in that it consists. In the battery box of the work machine according to claim 1,
The battery box of a working machine, wherein the internal fixing means is provided in the vicinity of the inspection window. The battery box of the work machine according to claim 2,
The internal fixing means is a screw fastening member using a screw component,
The first cover side abutting portion of the battery box cover and the first main body side abutting portion of the battery box body are in contact with each other in the clockwise direction about the axis of the screw of the screw fastening member. Rotation is prohibited, and the second cover side contact portion of the battery box cover and the second body side contact portion of the battery box body come into contact with each other so that the screw axis of the screw fastening member is aligned. A battery box for a work machine, wherein the battery box is configured to prohibit counterclockwise rotation at the center . In the battery box of the work machine according to claim 3,
A battery box for a work machine, wherein a distance from the screw fastening member to the first cover side contact portion is substantially equal to a distance from the screw fastening member to the second cover side contact portion. . In the battery box of the working machine according to any one of claims 1 to 4,
The inspection window opens from a part of the upper surface of the battery box cover to a part of the front surface ,
The projected area from the upper surface of the opening is smaller than the area of the upper surface of the battery placed on the battery box body,
A battery box of a work machine, wherein a projected area from the front surface of the opening is smaller than an area of a front surface of the battery placed on the battery box body.

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