JP2003267676A - Reach forklift - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reach forklift capable of keeping altitude of a battery unit always in the stable condition regardless of the running state of a vehicle body. <P>SOLUTION: A battery storage part with front opened for storing the battery unit 7 is formed on top of the vehicle body, and a lock mechanism 8 for preventing the battery unit from falling is mounted inside the battery storage part. The lock mechanism 8 is engaged with the upper end of the battery unit when the battery unit is stored in the battery storage part. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reach type forklift having a battery unit.

[0002]

2. Description of the Related Art Conventionally, as a reach type forklift,
A structure shown by reference numeral 1 in FIG. 3 is known. A reach type forklift 1 shown in FIG. 3 includes a vehicle body 2, a vehicle body cover 3 provided to cover an upper portion of the vehicle body 2,
A pair of left and right straddle arms 4 integrally extended to the lower front of the vehicle body 2, and these straddle arms 4
A mast device 5 mounted so as to be able to move forward and backward and a fork 6 mounted so as to be able to move up and down are provided between the mast device 5. The vehicle main body 2 is provided with an operating portion (not shown) for moving the mast device 5 forward and backward and for moving the fork 6 up and down. An operator operates the operating portion to move the mast device 5 forward and backward. The forward movement and the raising and lowering of the fork 6 are performed.

A battery unit 7 serving as a drive source of the reach type forklift 1 is mounted inside the vehicle body cover 3 in front of the upper portion of the vehicle body 2. The battery unit 7 is used during maintenance. At the time of replacement or the like, as shown in FIG. 4, the mast device 5 is engaged with the mast device 5, and the mast device 5 and the mast device 5 are pulled out in front of the vehicle body cover 3. Therefore, the front of the vehicle body cover 3 is open for the movement of the battery unit 7.

The battery unit 7 includes a battery table movably supported in the front-rear direction of the vehicle body 2, a battery case placed on the battery table, and a battery housed in the battery case. When the reach type forklift 1 travels, the lock device (not shown) restrains the battery table from moving forward and backward.

[0005]

By the way, in the conventional reach type forklift 1 as described above, there remain the following problems to be improved. That is, the battery table forming the battery unit 7 has a tray shape with a relatively shallow bottom due to design restrictions and the like.
Since the battery case in which a battery, which is a heavy object, is stored is placed on this battery table, the reach-type forklift 1 moves forward even if the forward / backward movement of the battery table is restricted by a lock device or the like during traveling. When sudden deceleration is performed during traveling or sudden acceleration is performed during backward traveling, as shown in FIG.
Is expected to fall forward. Further, even when the vehicle body 2 is tilted forward during the cargo handling work, the battery unit 7 may fall forward.

The present invention has been made in view of the above-mentioned problems left in the prior art, and it is possible to always maintain the posture of the battery unit in a stable state regardless of the running condition of the vehicle body. It is intended to provide a reach type forklift.

[0007]

In order to achieve the above-mentioned object, a reach type forklift according to claim 1 of the present invention is provided with a vehicle body and a pair of left and right straddles provided in front of a lower portion of the vehicle body. The vehicle body includes an arm, a mast device mounted between the straddle arms so as to be movable back and forth, and a battery unit mounted on the vehicle body and provided between the straddle arm and the vehicle body so as to be movable back and forth. A battery storage portion is formed in the upper part of which the front is opened for storing the battery unit, and when the battery unit is stored in the battery storage portion, the battery storage portion is provided at the upper end portion of the battery unit. A locking mechanism is provided which is engaged to prevent the battery unit from falling.

According to this structure, the locking mechanism is engaged with the upper end of the battery unit in the housed state, so that the battery unit is moved forward due to sudden acceleration / deceleration of the reach forklift or tilting of the vehicle body. You can prevent falling.

In the reach type forklift according to claim 2 of the present invention, the locking mechanism according to claim 1 includes a swingable hook member that is engaged with and disengaged from an upper end portion of the battery unit, and the vehicle. It is characterized in that it is configured to be mounted on a driver's seat provided in the main body, and configured by an operating member for rocking the hook member to engage and disengage the hook member.

With such a structure, the battery unit and the hook member can be engaged and disengaged by operating the operation member mounted on the driver's seat.
The operator can perform the engagement / disengagement operation of the hook member while being in the driver's seat.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. In the following description, the main components of the reach type forklift are common to those of the conventional example shown in FIGS. 3 to 5, and therefore, these main components will be described using the reference numerals shown in FIGS. 3 to 5. To do.

The reach type hawk lift 1 according to this embodiment is mounted on a vehicle body 2, a pair of left and right straddle arms 4 provided in front of a lower portion of the vehicle body 2, and between the straddle arms 4 so as to be movable back and forth. Mast device 5
And a battery unit 7 mounted on the vehicle body 2 and provided between the vehicle body 2 and the straddle arm 4 so as to be able to move forward and backward, and the battery unit 7 is housed in the upper portion of the vehicle body 2. A battery accommodating portion having an open front is formed, and when the battery unit 7 is accommodated in the battery accommodating portion, the upper end portion of the battery unit 7 is engaged with the battery accommodating portion. It has a basic structure in which a locking mechanism 8 for preventing the falling of 7 is provided.

To explain these details, the battery unit 7 is, as shown in FIG. 1, a battery table 9 supported by a guide rail (not shown) so as to be movable in the front-rear direction of the vehicle body 2. The battery case 10 placed on the battery table 9
And the battery 1 housed in the battery case 10.
1 and 1.

The mast carriage 12 on which the mast device 5 is mounted can enter below the battery table 9 while the battery unit 7 is housed in the vehicle body cover 3.

A pair of brackets 13 are provided on the lower surface of the battery table 9 in parallel with each other in a direction orthogonal to the advancing / retreating direction of the mast device 5.
The rotating shaft 14 is mounted so as to penetrate through the space 3.

An engaging piece 15 is provided at the front end of the rotary shaft 14 (the end on the front side in the traveling direction of the reach type forklift 1).
Are integrally attached, and are integrally rotated together with the rotary shaft 14 so as to be positioned near the upper surface of the mast carriage 12.

On the other hand, on the upper surface of the mast carriage 12, the engagement piece 15 which is rotated downward when the mast carriage 12 is pulled toward the vehicle body 2 is provided with the reach type. A locking piece 16 that is opposed to the front side of the forklift 1 is integrally provided.

Among the brackets 13, the bracket 13 located on the rear side of the vehicle body 2 is provided with a locking member 17 which is opened in the vertical direction. A rear end portion of the rotating shaft 14 is positioned inside the locking member 17, and the rear end portion is pressed and rotated by a pressing piece 18 described later, whereby the rotating shaft 14 is rotated. Is integrally attached to rotate the engaging piece 15 so as to project downward.

The pressing piece 18 is rotatably connected to one end of an operation lever 20 rotatably attached to the floor of the driver's seat provided in the vehicle body 2.
It is adapted to be moved up and down by the rotating operation of the operation lever 20, and when it is pushed down, it is inserted into the locking member 17 and is positioned inside the locking member 17. The operation piece 19 is brought into contact with the operation piece 19 to rotate the operation piece 19 in a predetermined direction. By such a rotating operation, as described above, the engaging piece 15 is rotated so as to project downward.

The operating piece 19 is provided with a biasing member 21 such as a tension spring for biasing the operating piece 19 so as to hold the engaging piece 15 at a position separated from the mast carriage 12. It is installed.
In addition, the operation lever 20 includes
An urging member 22 including a tension spring or the like for urging the pressing piece 18 toward the operation piece 19 is attached.

In the present embodiment, the locking mechanism 8 is provided with a swingable hook member 23 which is engaged with and disengaged from the upper end opening edge of the battery case 10 which constitutes the battery unit 7. The end of the operating lever 20 opposite to the end engaging with the battery case 10 is connected to the end of the operating lever 20 opposite to the side where the pressing piece 18 is attached via a connecting rod 24. Has been done.
Therefore, the operating lever 20 moves the hook member 2
The operation lever 20 and the hook member 23 serve as the locking mechanism 8 in the present embodiment.

In the reach type forklift 1 according to the present embodiment having the above-described structure, the battery unit 7 is normally housed in the vehicle body 2 and the operating lever 20 is urged by the biasing member 22. By being urged, the pressing piece 18 attached to one end thereof is pushed down and inserted into the locking member 17, and the operation piece 19 positioned in the locking member 17 is also pushed. Is rotated to integrate the operating piece 19 with the engaging piece 15 via the rotating shaft 14.
Is held at a position separated from the mast carriage 12. Also, in this state, the hook member 23 is held at a position where the tip end thereof is engaged with the upper opening edge of the battery case 10.

Therefore, as shown in FIG. 1, the battery unit 7 has the locking member 1 at its lower portion.
The forward and backward movements are restrained by the engagement between 7 and the pressing piece 18, and the battery case 10 and the hook member 23 are prevented from collapsing at the upper portion. As a result, reach type forklift 1
Even when the acceleration / deceleration is suddenly performed, the battery unit 7 is prevented from collapsing, and the battery unit 7 is always held in a stable posture.

On the other hand, when performing maintenance or replacement of the battery 11, the operator must operate the operation lever 20.
When the mast device 5 is moved forward in the stepped state, the battery unit 7
To the front of the vehicle body 2.

That is, when the operation lever 20 is stepped on, the hook member 23 is swung by the operation lever 20 so that the engagement with the battery case 10 is released and the pressing piece 18 is released. By being pulled upward, the pressing force on the operation piece 19 is released, and the engagement between the pressing piece 18 and the locking member 17 is released.

In this way, when the pressing force on the operation piece 19 is released, the pressing piece 19 is pushed by the urging member 2.
The engaging piece 15 is rotated by the urging force of 1, and the engaging piece 15 is rotated through the rotation shaft 14 and is rotated to a position where the engaging piece 15 protrudes downward, so that the engaging piece 15 is rotated. It is located in front of the locking piece 16 provided on the carriage 12.

In this state, when the mast device 5 is moved forward, the mast carriage 1
The engaging piece 16 provided on the upper part 2 is the engaging piece 15
When the mast carriage 12 further advances, the battery unit 7 is pulled forward together with the mast carriage 12 and is pulled out forward of the vehicle body cover 3. As a result, the battery unit 7 is largely exposed, and maintenance work and replacement work are easily performed.

The shapes, sizes, etc. of the constituent members shown in the above embodiment are merely examples, and can be variously changed based on design requirements and the like.

[0029]

As described above, according to the first aspect of the present invention.
Further, according to the reach type forklift according to claim 2, the upper end of the battery unit is locked by the locking mechanism in the state where the battery unit is located at the storage position, so that the battery unit falls forward. Can be reliably prevented.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a perspective view showing a schematic configuration of a main part.

FIG. 2 shows an embodiment of the present invention and is a perspective view showing a schematic configuration of a main part.

FIG. 3 is a side view showing an example of a reach type forklift.

FIG. 4 is a side view showing an example of a reach type forklift.

FIG. 5 is a side view showing an example of a reach type forklift.

[Explanation of symbols]

1 Reach type forklift 2 vehicle body 3 body cover 4 straddle arms 5 mast device 6 forks 7 Battery unit 8 locking mechanism 9 Battery table 10 battery case 11 battery 12 mast carriage 13 bracket 14 rotation axis 15 Engaging piece 16 Locking piece 17 Locking member 18 Pressing piece 19 Operation piece 20 Operation lever 21 Biasing member 22 Biasing member 23 Hook member 24 Connecting rod

Claims (2)

[Claims] 1. A vehicle main body, a pair of left and right straddle arms provided in front of a lower portion of the vehicle main body, and a mast device mounted between the straddle arms so as to be movable back and forth.
A battery unit attached to the vehicle body, the battery unit being provided between the straddle arm and the vehicle body so as to be able to move back and forth, and a battery storage unit having an open front for storing the battery unit in an upper portion of the vehicle body. And a locking mechanism that is engaged with the upper end of the battery unit to prevent the battery unit from falling when the battery unit is in the housed state. Reach type forklift that is characterized by being. 2. The locking mechanism is attached to a swingable hook member which is engaged with and disengaged from an upper end portion of the battery unit, and a driver's seat provided in the vehicle body to swing the hook member. The reach-type forklift according to claim 1, wherein the reach-type forklift is constituted by an operating member which is moved to engage and disengage the hook member.