JP2003118991A - Battery replacing device for battery type forklift truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery replacing device for a battery type forklift truck allowing easy replacement of a battery. SOLUTION: This device is constituted of a guide means 8 provided on a head guard 5 located on an upper side of a battery storing chamber 6 stored with the battery 7 for power therein, and a wire 9 which is attachably/ detachably connected to the battery 7 stored in the battery storing chamber 6 on one end side, is detoured to the guide means 8 in the intermediate part and is attachably/detachably fixed to a movable part of a working machine 3 by a wire fixing means 12 on the other end side. Since the battery 7 within the battery storing chamber 6 can be lifted up to a height where the battery 7 is replaceable by the working machine 3, the battery 7 can be easily replaced in a short time by using another forklift truck.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery replacement device for a battery-powered forklift truck that facilitates battery replacement.

[0002]

2. Description of the Related Art In a conventional battery-powered forklift truck that uses a battery as a power source, when the battery is charged, the battery mounted on the vehicle body is replaced with a battery that has already been charged. Since it is heavy, various battery exchanging devices for easily exchanging batteries have been proposed and put into practical use.

For example, in Japanese Unexamined Patent Publication No. 6-286991, a battery hoisting device is installed on a head guard that covers the upper part of a driver's seat, the battery is hoisted by the battery hoisting device, and then another forklift truck is used. An industrial vehicle for battery replacement is described. Further, Japanese Utility Model Publication No. 50-27103 discloses a battery loading device in which a battery to be replaced and a mast are connected by a wire, and the battery is loaded into a vehicle body by raising the mast and towing the battery. Has been done.

[0004]

However, as in the industrial vehicle of the former publication, a head guard provided with a hoisting device for hoisting a battery requires a reversible electric motor and control means for controlling the electric motor. Since the lifting device becomes complicated and expensive, and the weight of the lifting device and the weight of the battery are added to the head guard, a strong structure is required, and the head guard becomes expensive.

In the battery loading device of the latter publication,
Since a roller conveyor must be installed at the rear of the vehicle when loading batteries, it takes time to set up and
Since the bottom surface of the battery chamber is pre-tilted, it is necessary to provide a locking device with a strong structure so that the loaded battery does not fall under its own weight, and the locking device becomes expensive and the locking device comes off due to vibration etc. In that case, there is also a problem such as the battery falling.

The present invention has been made in order to solve the above conventional problems, and an object of the present invention is to provide a battery replacement device for a battery-operated forklift truck which allows easy battery replacement at a low cost.

[0007]

In order to achieve the above object, in a battery type forklift truck battery exchanging device of the present invention, a working machine having a mast capable of lifting and tilting is mounted on a front portion of a self-propelled vehicle body. In addition, in a battery exchange device for a battery-powered forklift truck in which a head guard is mounted so as to cover the upper side of the driver's seat, the head guard is provided so as to be located above a battery storage chamber in which a power battery is stored. The guide means and the battery housed in the battery storage chamber are detachably connected at one end side to the guide means at the intermediate portion, and the other end side is connected to the movable portion of the working machine by the wire fixing means. The wire is detachably fixed.

With the above structure, the battery in the battery chamber can be lifted up to a replaceable height by the working machine. Therefore, the battery can be replaced easily and in a short time by using another forklift truck or the like. At the same time, since it is not necessary to separately provide power for lifting the battery, the battery exchange device can be provided at low cost. Further, unlike the conventional battery exchanging device in which the lifting device is provided in the head guard, the structure is not complicated by installing the battery exchanging device in the head guard, and the weight of the head guard is not added. The structure is simple, which makes the head guard inexpensive and economical, and since it is not necessary to lock the battery accommodated in the battery accommodating chamber by the lock device, it is not necessary to install an expensive lock device. There is no concern that the lock device will come off due to vibration or the like and the battery will fall.

In order to achieve the above object, in the battery exchanging device for a battery type forklift truck according to the present invention, the other end side of the wire is detachably fixed to a horizontal rod which is horizontally installed above the outer mast which constitutes the mast. Is.

With the above construction, the battery can be lifted to a height at which it can be replaced by simply tilting the mast forward, so that the battery can be replaced easily and in a short time.

In order to achieve the above object, in the battery exchanging device for a battery type forklift truck according to the present invention, the other end side of the wire is detachably fixed to a horizontal rod which is horizontally installed above the inner mast which constitutes the mast. Is.

With the above construction, the battery can be lifted to a height at which it can be replaced by simply lifting the inner mast upward, so that the battery can be replaced easily and in a short time.

In order to achieve the above object, the battery exchanging device for a battery-operated forklift truck according to the present invention is such that the other end of the wire is detachably fixed to a finger board that is movably supported by a mast.

With the above structure, the battery can be lifted to a height at which it can be replaced by simply lifting the fingerboard upward, so that the battery can be replaced easily and in a short time.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a battery-powered forklift truck, FIG. 2 (a) is an enlarged perspective view in the circle A of FIG. 1, and (b) and (c) of FIG. 2 are explanatory views showing a modification of the wire fixing means. 3, FIG. 3 is an enlarged view of the circle B in FIG. 1, and FIGS. 4 and 5 are operation explanatory views. In a battery-powered forklift truck, a working machine 3 is installed in the front part of a vehicle body 1 which can be freely driven by wheels 2, a driver's seat 4 is installed above the vehicle body 1, and a head guard 5 covering the upper part of the driver seat 4 is installed. .

Below the driver's seat 4 is a box-shaped battery accommodating chamber 6 having an open top surface.
The driver's seat 4 is attached to the upper opening 6a of a. The driver's seat 4 is rotatable in the vertical direction, and by rotating upward as shown in FIGS. 5 and 6, the opening 6a of the battery accommodating chamber 6 is opened. A battery 7 for power is housed in the battery housing chamber 6 through the opening 6a.

The head guard 5 located above the driver's seat 4 is provided with guide means 8 as shown in FIG. The guide means 8 is a wire 9 for lifting the battery 7.
The shaft rod 8a is provided above the head guard 5 in the vehicle width direction, and the pulley 8b is rotatably supported at a substantially middle portion of the shaft rod 8a. 9 is bypassed. The shaft rod 8a is rotatably supported by the head guard 5 and the wire 9 is directly circumvented to the shaft rod 8a.
May be omitted.

On the other hand, the working machine 3 mounted on the front part of the vehicle body 1.
Has a mast 3a whose upper end can be tilted forward and backward by the tilt cylinder 10. The mast 3a is composed of a pair of outer masts 3b whose lower ends are pivotally supported on the vehicle body 1 side and a pair of inner masts 3c vertically slidably provided between the outer masts 3b.
Is lifted up and down by a lift cylinder 3d, and a finger board 3e that moves up and down as the inner mast 3c moves up and down is supported between the inner masts 3c, and a pair of forks 3f are engaged with the finger boards 3e. .

Further, a wire fixing means 12 for fixing one end of the wire 9 when the battery 7 is lifted is installed at a substantially middle portion of the horizontal rod 3g which is horizontally provided between the upper ends of the outer masts 3b. The wire fixing means 12 is, for example, as shown in FIG. 2A, a locking hole 12a formed so as to vertically penetrate through a substantially middle portion of the horizontal rod 3g, and an engaging member provided at one end of the wire 9. It consists of a stopper 12b. As shown in (a) of FIG. 3, the locking tool 12b includes a shackle 12c for locking an annular portion 12d formed at one end of the wire 9 into a locking hole 12a of the horizontal rod 3g, and (b) in FIG. As shown in FIG. 5, the hook 12e is engageable with the locking hole 12a of the horizontal rod 3g.

The wire fixing means 12 is shown in FIG.
As shown in FIG. 3, a pin 12g having a head portion 12f may be provided on the upper surface of the horizontal rod 3g, and the annular portion 12d of the wire 9 may be directly locked to the pin 12g. A shackle 12c or a hook 12e may be used. May be locked. As shown in FIG. 2C, eyebolts 12h are attached to the rear surface of the horizontal rod 3g.
Screw on the shackle 12c to the eyebolt 12h.
Alternatively, one end of the wire 9 may be locked with the hook 12e.

Next, the operation of the battery exchanging device configured as described above will be described in detail with reference to FIGS. 5 and 6. When replacing the battery 7, first, as shown in FIG. 5, the driver's seat 4 is rotated upward to open the opening 6a of the battery housing chamber 6,
In this state, one end of the wire 9 for lifting the battery 7 is bound to the battery 7. Next, when the middle portion of the wire 9 is diverted to the guide means 8, the other end of the wire 9 is fixed to the horizontal rod 3g by the wire fixing means 12.

Then, in this state, the tilt cylinder 10 tilts the upper end side of the mast 3a forward as shown by an arrow C in FIG. 6, and the wire 9 lifts the battery 7 in the battery accommodating chamber 4 and the battery 7 Is the opening 4a
When the battery 7 is lifted to a more replaceable height, another forklift truck (not shown) prepared in advance is used to lower the battery 7 from the vehicle body 1, and the fully charged battery 7 is loaded into the vehicle body 1. By performing the reverse operation to the above, the battery 7 can be replaced easily and in a short time.

On the other hand, FIGS. 7 and 8 show a modified example in which the battery is replaced by using the lifting and lowering of the inner mast 3c, which will be described below. The same parts as those in the above-mentioned embodiment are designated by the same reference numerals, and the description thereof will be omitted.
In this modification, a guide rod 13 similar to the guide rod 8 is provided also on the horizontal rod 3g horizontally extending between the upper parts of the outer mast 3b, and the horizontal rod 3i horizontally extending between the upper parts of the inner mast 3c.
The wire fixing means 12 is provided in the. When the battery 7 is to be replaced, the middle part of the wire 9 having one end bound to the battery 7 is diverted to the guide means 8 and 13, and then the other end is fixed to the inner mast 3c by the wire fixing means 12.
Fixed to the side horizontal rod 3i, and in this state the lift cylinder 3d
The inner mast 3c is raised by the
As shown in FIG. 7, the battery 7 is hoisted to a replaceable height, and like the case of tilting the mast 3a, the battery 7 can be replaced easily and in a short time.

9 to 11 also show modified examples, in which the battery 7 is exchanged by using the lifting and lowering of the finger boards 3e of these modified examples. That is, guide means 14 and 15 similar to the guide means 8 are provided in the front part of the head guard 5 and the lower part of the working machine 3, and the wire 9 bypassing these guide means 8, 14 and 15 is attached to the finger board 3e. It is fixed by the fixing means 12, and the battery 7 can be lifted as shown in FIG. 9 by raising the finger board 3e.

Further, as shown in FIG. 10, the guide means 1
4, 16 may be respectively provided on the rear portion of the head guard 5 and the rear portion of the vehicle body 1, and the wire 9 may be passed from the rear of the vehicle body 1 to the lower side of the vehicle body 1 to bond the fins to the board 3e.
As shown in FIG. 11, a pantograph-shaped lift means 18 is installed at the bottom of the battery storage chamber 6, and one end of the wire 9 is connected to a roller 18 a of this lift means 18, and the wire 9
The battery 7 may be lifted by the lift means 18 by moving the roller 18a forward by.

In any of the modified examples, when the battery 7 rises to a predetermined height, another forklift truck unloads the battery 7, so that the battery can be easily and quickly taken in the same manner as in the above embodiments. 7 can be exchanged. Also, as shown in FIG. 12, the outer mast 3 is previously
The winding drum 20 is installed on the horizontal rods 3g and 3i that are laid horizontally between the upper portions of b and between the upper portions of the inner masts 3c, and the wire 9 is wound on the winding drum 20 when the battery 7 is not replaced. You may

[0027]

As described above in detail, the present invention provides the guide means provided on the head guard so as to be located above the battery accommodating chamber accommodating the power battery, and the battery accommodated in the battery accommodating chamber. Since one end side is detachably bound to the, and the intermediate part is diverted to the guide means, and the other end side is composed of a wire removably fixed to the movable part of the working machine by the wire fixing means,
Since the work machine can lift the battery in the battery accommodating chamber to a height at which it can be replaced, the battery can be replaced easily and in a short time by using another forklift truck or the like, and the battery can be lifted. Since it is not necessary to separately provide power for the battery replacement device, the battery replacement device can be provided at low cost.

Further, unlike the conventional battery exchanging device in which the head guard is provided with the lifting device, the structure is not complicated by installing the battery exchanging device in the head guard, and its own weight is not added. , The structure of the head guard can be simplified, which makes the head guard inexpensive and economical, and since it is not necessary to lock the battery housed in the battery housing chamber by the locking device, an expensive locking device is installed. There is no need, and there is no concern that the battery will drop due to the locking device coming off due to vibration or the like.

Further, the other end of the wire is supported by a horizontal rod which is laid horizontally on the outer mast which constitutes the mast, a horizontal rod which is horizontally laid on the upper part of the inner mast which constitutes the mast, or which can be lifted and lowered by the mast. Since it is detachably fixed to the finger board, the battery can be lifted to a replaceable height simply by tilting the mast forward, lifting the inner mast upward, or lifting the finger board upward. Therefore, the battery can be replaced easily and in a short time.

[Brief description of drawings]

FIG. 1 is a side view of a battery type forklift truck using a battery exchanging device according to an embodiment of the present invention.

FIG. 2A is an enlarged perspective view of a circle A in FIG.
(B) is a perspective view showing a modification of the wire fixing means.
(C) is a perspective view which shows the modification of a wire fixing means.

FIG. 3A is a perspective view showing a wire fixing means.
(B) is a perspective view showing a modification of the wire fixing means.

FIG. 4 is an enlarged perspective view of a circle B in FIG.

FIG. 5 is an operation explanatory view of the battery exchange device for the battery-powered forklift truck according to the embodiment of the present invention.

FIG. 6 is an operation explanatory view of the battery exchange device for the battery-powered forklift truck according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a modified example of the battery replacement device for a battery-powered forklift truck according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a modified example of the battery replacement device for a battery-powered forklift truck according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a modified example of the battery replacement device for a battery-powered forklift truck according to the embodiment of the present invention.

FIG. 10 is an explanatory diagram showing a modified example of the battery replacement device for a battery-powered forklift truck according to the embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a modified example of the battery replacement device for a battery-powered forklift truck according to the embodiment of the present invention.

FIG. 12 is an explanatory diagram of a winding drum provided in the battery exchanging device for the battery-powered forklift truck according to the embodiment of the present invention.

[Explanation of symbols]

1 car body 3 working machines 3a mast 3b outer mast 3c Inner Mast 3e finger board 3g Yokomo 3i Yokomo 4 driver's seat 5 head guard 6 Battery storage room 7 battery 8 guide means 9 wires 12 Wire fixing means

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3D026 BA05 BA22 BA23 BA27 BA30                       BA47                 3F333 AA02 AE02 AE35 BA02 BB02                       BD02 BE02 CA09 CA25 DB05

Claims (4)

[Claims] 1. A working machine (3) having a mast (3a) that can be lifted and tilted is attached to a front part of a self-propelled vehicle body (1), and also covers an upper portion of a driver's seat (4). Head guard (5)
A battery exchanging device for a battery-type forklift truck in which a head guard (5) is provided so as to be located above a battery accommodating chamber (6) in which a power battery (7) is accommodated. One end side is detachably attached to the means (8) and the battery (7) housed in the battery housing chamber (6), and the middle portion is diverted to the guide means (8), and the other end. A battery exchanging device for a battery-operated forklift truck, comprising a wire (9) whose side is detachably fixed to a movable part of the working machine (3) by a wire fixing means (12). 2. The other end of the wire (9) is attached to the mast.
The battery exchanging device for a battery-operated forklift truck according to claim 1, wherein the outer mast (3b) constituting the (3a) is detachably fixed to a horizontal rod (3g) that is horizontally installed on the upper portion. 3. The mast is attached to the other end of the wire (9).
The battery exchanging device for a battery-operated forklift truck according to claim 1, wherein the inner mast (3c) constituting (3a) is detachably fixed to a horizontal rod (3i) that is horizontally installed above the inner mast. 4. The mast is attached to the other end of the wire (9).
The battery exchanging device for a battery-powered forklift truck according to claim 1, wherein the battery exchanging device is detachably fixed to a finger board (3e) which is movably supported by the (3a).