JP2013239261A - Cargo transporting industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of components of a cargo transporting industrial vehicle having counterweight.SOLUTION: A forklift includes a plurality of batteries 20 which are housed in a housing part provided in a vehicle body and counterweights. Once the plurality of batteries 20 are housed in the housing part, the counterweights serve as restriction members (case 21) which restrict the plurality of batteries 20 so that they are not moved within the housing part.

Description

  The present invention relates to an industrial vehicle for cargo handling conveyance.

  In the secondary battery device of Patent Document 1, the battery module includes a plurality of single cells housed in a box-like case and connected to each other, and the battery stack assembly includes a plurality of battery modules arranged in a row. A plurality of arranged battery rows are stacked in a plurality of stages. A weight is provided on the bottom side of the battery stack assembly (the bottom of the outer case).

JP 2011-54353 A

However, a weight is attached to the outer case, and the weight is necessary separately from the outer case.
An object of the present invention is to reduce the number of parts of an industrial vehicle for cargo handling transportation provided with a counterweight.

  The invention according to claim 1 is an industrial vehicle for cargo handling transportation provided with a plurality of batteries accommodated in a housing portion provided in a vehicle body and a counterweight, wherein the counterweight includes the plurality of batteries. The gist of the invention is that it is a regulating member that regulates the plurality of batteries so that they do not move within the housing portion when they are housed in the housing portion.

  According to the first aspect of the present invention, the counterweight functions as a restricting member that restricts the plurality of batteries from moving in the accommodating portion when the plurality of batteries are accommodated in the accommodating portion. There is no need to provide a counterweight separately, and the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight can be reduced.

The gist of the invention according to claim 2 is that in the industrial vehicle for cargo handling conveyance according to claim 1, the counterweight is a case for housing the plurality of batteries.
According to the second aspect of the present invention, since the counterweight is a case that accommodates a plurality of batteries, the case can function as a counterweight, and the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight can be reduced. Can be reduced.

The invention described in claim 3 is the industrial vehicle for cargo handling conveyance according to claim 1 or 2, wherein the battery is a lithium ion battery.
According to the invention described in claim 3, since the counterweight functions as a restricting member that restricts the lithium ion battery from moving in the accommodating portion, the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight is reduced. can do.

  ADVANTAGE OF THE INVENTION According to this invention, the number of parts of the industrial vehicle for cargo handling conveyance provided with the counterweight can be reduced.

The schematic side view of the forklift in an embodiment. (A) is a top view which shows a battery typically, (b) is a front view which shows a battery typically, (c) is a right view which shows a battery typically. The perspective view which shows a battery typically. The disassembled perspective view which shows a battery typically. (A) is a perspective view which shows typically the battery of another example, (b) is an exploded perspective view which shows a battery typically. (A) is a perspective view which shows typically the battery of another example, (b) is an exploded perspective view which shows a battery typically.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
In the drawings, the horizontal plane is defined by the orthogonal X and Y directions, and the vertical direction is defined by the Z direction.

  As shown in FIG. 1, a forklift 1 as an industrial vehicle for cargo handling and conveyance is a counterbalance type battery forklift, which is a forklift that performs conveyance and cargo handling work with an electric motor. A drive wheel (front wheel) 3 a is provided at the front lower portion of the vehicle body 2 of the battery forklift 1, and a steering wheel (rear wheel) 3 b is provided at the rear lower portion of the vehicle body 2. A cargo handling device 4 is provided at the front of the vehicle body 2.

  A mast 5 constituting the cargo handling device 4 is erected on the front portion of the vehicle body 2. The mast 5 includes a pair of left and right outer masts 5a supported so as to be tiltable back and forth with respect to the vehicle body 2, and an inner mast 5b that slides up and down. A lift cylinder 6 is disposed at the rear of each outer mast 5a. A lift bracket 8 having a fork 7 is supported inside the inner mast 5b so as to be movable up and down. Then, the fork 7 is lifted and lowered together with the lift bracket 8 by the expansion and contraction operation of the lift cylinder 6. Then, the load 18 can be mounted on the fork 7 constituting the cargo handling device at the front portion of the vehicle body 2 so as to be movable up and down.

  The pair of left and right tilt cylinders 9 is pivotally connected to the vehicle body (body frame) 2 at the base end side, and is pivotally connected to the side surface of the outer mast 5a at the distal end side. The mast 5 tilts back and forth as the tilt cylinder 9 is driven to expand and contract.

  The cab S is equipped with a handle 10, a lift lever 11 and a tilt lever 12 on the front side thereof. The lift lever 11 is a lever for raising and lowering the fork 7, and the tilt lever 12 is a lever for tilting the mast 5 in the front-rear direction. An accelerator pedal 13 is provided on the floor of the driver's seat, and the vehicle speed is set according to the amount of operation of the accelerator pedal 13 (the amount of pedal depression).

  A battery 14, a traveling electric motor 15, and a cargo handling electric motor 16 are mounted on the vehicle body 2. The battery 14 is installed near the center of the vehicle body 2 in the front-rear direction, and is disposed in a battery storage chamber formed in the vehicle body 2. The driving electric motor 15 is driven by the battery 14, and the driving wheel 3a is driven. Specifically, the output shaft of the traveling electric motor 15 is connected to the rotating shaft of the driving wheel 3a via a reduction gear, and when the output shaft rotates by the driving of the traveling electric motor 15, the driving wheel 3a is rotated along with the rotation. The drive shaft 3a is driven by rotating the rotation shaft.

  Further, the cargo handling electric motor 16 is driven by the battery 14, and the hydraulic pump (not shown) is driven by the driving of the cargo handling electric motor 16. Based on the driving of the hydraulic pump, the lift cylinder 6 and the tilt cylinder 9 can be expanded and contracted so that the fork 7 can be moved up and down and tilted. On the other hand, a counterweight 17 is provided at the rear part of the vehicle body 2.

Next, the battery 14 will be described with reference to FIGS.
As shown in FIGS. 2 and 3, the battery 14 is composed of a plurality of prismatic lithium ion batteries 20. A case 21 that houses a plurality of prismatic lithium ion batteries 20 has a box shape. A plurality of batteries 20 are arranged in the case 21 in a connected state.

  As shown in FIGS. 2 and 4, the case 21 forms an outer shell with a bottom plate portion 21 a, a top plate portion 21 b, left and right side plate portions 21 c and 21 d, and a back plate portion 21 e. The front side is open (open). That is, the case 21 has a box-type structure in which five surfaces other than the front surface serving as a battery insertion port are closed. Further, a horizontal plate portion 21f extending in the horizontal direction is formed in a region surrounded by the bottom plate portion 21a, the top plate portion 21b, the left and right side plate portions 21c and 21d, and the back plate portion 21e, and is vertically A vertical plate portion 21g extending in the direction is formed. The horizontal flat plate portion 21f is provided at the central portion in the vertical direction (Z direction), and the vertical plate portion 21g is provided at the central portion in the horizontal direction (X direction). The outer shell (the bottom plate portion 21a, the top plate portion 21b, the side plate portions 21c and 21d, and the back plate portion 21e), the horizontal plate portion 21f, and the vertical plate portion 21g are integrally formed.

  An area R partitioned by the horizontal plate portion 21f and the vertical plate portion 21g is formed in the region surrounded by the bottom plate portion 21a, the top plate portion 21b, the left and right side plate portions 21c and 21d, and the back plate portion 21e. This is an arrangement area of one battery 20. As shown in FIG. 4, each battery 20 is inserted into the region R partitioned by the horizontal plate portion 21f and the vertical plate portion 21g from the front side of the opening, and one battery 20 is provided in each region R partitioned. It is stored.

Note that a junction box, an ECU box, and the like are accommodated in the case 21 as necessary, and are connected to the battery 20.
In this manner, the case 21 integrates the plurality of batteries 20, the junction box, the ECU box, and the like.

2, 3 and 4 show a state in which the batteries 20 are stacked in two upper and lower stages and the batteries 20 are arranged in two rows on the left and right.
In this state, the battery 14 is disposed in a battery storage chamber provided in the vehicle body 2. At this time, the case 21 is in close contact with the housing portion (battery housing chamber) formed in the vehicle body 2, and the case 21 fills the space between the housing portion and the battery 20. That is, the case 21 is a restricting member that restricts the plurality of batteries 20 from moving in the housing portion when the plurality of batteries 20 are housed in the housing portion (battery housing chamber) formed in the vehicle body 2.

  The shape, material, and the like of the case 21 (bottom plate portion 21a, top plate portion 21b, side plate portions 21c and 21d, back plate portion 21e, horizontal plate portion 21f, vertical plate portion 21g) are determined so as to function as a counterweight. For example, it is made of a metal having a large specific gravity (for example, iron). That is, in this embodiment, the regulating member is the case 21, and the case 21 functions as a counterweight. The forklift 1 is equipped with a counterweight 17 provided at the rear portion of the vehicle body 2 and a case 21 (counterweight) of the battery 14, and balances the load 18 at two locations.

Next, the operation of the forklift 1 will be described.
A case 21 and a plurality of batteries 20 are prepared in advance, and each battery 20 and a junction box, an ECU box, and the like are inserted into the case 21 from the front opening of the case 21 and necessary connections are made to assemble the battery 14.

  The battery 14 assembled in this way is placed in the battery storage chamber of the vehicle body 2. Therefore, it arrange | positions in the state in which the some battery 20 was connected in the case 21, and the case 21 functions as a counterweight.

Therefore, in this embodiment, it is not necessary to provide the case 21 and the counterweight separately, and the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight can be reduced.
In particular, if the lead-acid battery is changed to a lithium-ion battery as a battery constituting the battery, the weight is reduced due to the fact that the number of batteries is small, and a counterweight is necessary to cover the battery. For this reason, when the counterweight is mounted, the number of parts of the industrial vehicle for cargo handling and transportation increases. On the other hand, in this embodiment, since the case 21 is configured to function as a counterweight, there is no need to provide the counterweight and the case 21 separately, and the parts of the industrial vehicle for cargo handling transportation having the counterweight are provided. The score can be reduced.

As described above, according to the present embodiment, the following effects can be obtained.
(1) A forklift (industrial vehicle for cargo handling) 1 having a plurality of batteries 20 accommodated in a housing part provided in the vehicle body 2 and a counterweight, and the counterweights are accommodated by a plurality of batteries 20. It is a regulating member (case 21) that regulates the plurality of batteries 20 so as not to move in the housing when housed in the housing. Therefore, the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight can be reduced.

  (2) Since the counterweight is a case 21 that accommodates a plurality of batteries 20, the case 21 can function as a counterweight, and the number of parts of the industrial vehicle for cargo handling transportation provided with the counterweight can be reduced. it can.

(3) The battery 20 is a lithium ion battery, and a regulating member that regulates the lithium ion battery so as not to move in the housing portion can be used as a counterweight.
The embodiment is not limited to the above, and may be embodied as follows, for example.

  Although one battery 20 is disposed in the partitioned region R in the case 21, a plurality of batteries 20 may be disposed in the partitioned region R (for example, two batteries in each region R) Etc.).

  2 and 3, the front side of the battery case 21 is open, and the battery 14 in this state is disposed in the battery storage chamber formed in the vehicle body 2 of the forklift. Instead of this, as shown in FIG. 5 (a), the front opening of the case 21 may be closed. That is, as shown in FIG. 5B, in a state where a plurality of batteries 20 are inserted into the case 21 and the batteries 20 are connected to each other, they are housed in a box body 30 having an upper surface opened, and this is stored in the vehicle body 2 of the forklift. May be installed.

  In addition, as shown in FIG. 6A, the front opening of the case 21 may be closed with a cover (plate material) 40. That is, as shown in FIG. 6B, in a state where a plurality of batteries 20 are inserted into the case 21 and the respective batteries 20 are connected, the cover 40 is fixed to the case 21 by bonding, screwing, etc. You may mount in the vehicle body 2 of a forklift.

Only the horizontal plate portion 21f and the vertical plate portion 21g constituting the case 21 may be formed of a heavy material and shape.
The case 21 is integrally formed with the outer shell (the bottom plate portion 21a, the top plate portion 21b, the side plate portions 21c and 21d, the back plate portion 21e), the horizontal plate portion 21f, and the vertical plate portion 21g. The plate portion 21g may not be integrally formed with the outer shell (the bottom plate portion 21a, the top plate portion 21b, the side plate portions 21c and 21d, and the back plate portion 21e) (may be separate).

  The case 21 is provided with a horizontal plate portion 21f and a vertical plate portion 21g with respect to the outer shell (the bottom plate portion 21a, the top plate portion 21b, the side plate portions 21c and 21d, and the back plate portion 21e). The plate portion 21g may not be provided.

  -With a configuration in which a member (for example, a cushioning material) is sandwiched between the battery and the case, the case and the member may be regulated so that the battery does not move in the housing portion. Moreover, the structure by which the member is separately pinched | interposed between the accommodating part and the case may be sufficient.

-Although case 21 was functioned as a control member, a member of any shape may be used as long as it is a member that controls a plurality of batteries so as not to move in the housing portion.
The battery 20 is not limited to a lithium ion battery, and may be a lead storage battery or the like.

  The present invention may be applied to a hybrid forklift equipped with an engine, an electric motor, and a battery, in addition to an electric forklift that is equipped with an electric motor and a battery and that drives the electric motor to perform conveyance / loading work.

  -You may use for industrial vehicles other than a forklift.

  1 ... forklift, 20 ... battery, 21 ... case.

Claims (3)

A cargo handling industrial vehicle comprising a plurality of batteries housed in a housing portion provided in a vehicle body, and a counterweight,
The industrial vehicle for cargo handling conveyance, wherein the counterweight is a restricting member that restricts the plurality of batteries from moving in the housing portion when the plurality of batteries are housed in the housing portion.   The industrial vehicle for cargo handling according to claim 1, wherein the counterweight is a case that accommodates the plurality of batteries.   The industrial vehicle for cargo handling transportation according to claim 1 or 2, wherein the battery is a lithium ion battery.