JP2550647Y2 - Forklift overturn prevention device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a forklift from overturning by fixing a guide roller abutting on a guide rail formed on a rack to the outside of an outer mast and contributing to overturn prevention.

[0002]

2. Description of the Related Art In order to prevent a conventional forklift from tipping over, a guide roller contacting a guide rail formed at a lower portion of a rack is fixed to a front and rear outer portion of a lower portion of a vehicle body. Or,
Since the stability of the forklift in the front-rear direction is determined by the balance between the weight of the vehicle and the weight of the load, the structure has been adopted to increase the weight of the vehicle or to lengthen the wheelbase.

[0003]

Accordingly, in the former structure, the weight of the turning horizontal moving mechanism for turning the fork to turn horizontally when the height of the vehicle rises is high in order to support the vehicle body below the vehicle body. The moment due to the weight of the vehicle worked great, and at the time of an emergency stop, the moment of inertia due to the moment was also added, so that it did not sufficiently prevent overturning.

[0004] In the latter structure, the number of times of cargo handling can be reduced due to the limit of the capacity of the battery mounted on the vehicle body, and by increasing the wheelbase, the overall length of the vehicle body increases and the turning radius increases. There have been problems such as the need for a wide passage width.

[0005]

A forklift overturn prevention device according to the present invention (referred to as the present invention) is a forklift overturn prevention device having a turning horizontal moving mechanism for turning and moving a fork via a mast. On the floor outside the upper part of the pair of outer masts
The first guide roller that rotates vertically, and the horizontal
A rotating second guide roller is installed, and a pair of
The upper part of the aisle side of the rack has a U-shape that opens to the aisle side.
The guide rails horizontally to the floor and
Roller on the upper and lower surfaces of the guide rail, and the second guide
A structure formed by respectively abut the roller guide rail side, is obtained by solving cents above problems.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Figure 5 is a side view of a forklift equipped with the present invention apparatus, the forklift 13, Ma in front of the vehicle body 16
The stands 17 , 17 are erected, and rack gears 18A, 18B are provided on the front end surface of a lift bracket 22 mounted on the masts 17, 17 so as to be able to move up and down.
A movable head 19 is provided slidably with respect to the rack gears 18A and 18B, and a carriage 21 that rotates around a rotation axis 20 of the movable head 19. By shifting the pair of left and right forks 3 and 3 locked to the carriage 21 and rotating the carriage 21 about the rotation axis 20 in conjunction with the shift operation, the narrow rack 11 shown in FIG.
The cargo handling work can be performed in the passage 12 formed by A,.

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a plan view of FIG.
1 is a pair of left and right outer masts, 2 is a pair of left and right
The outer mast 1 and the inner mast
2 form the masts 17, 17 and the outer mast 1
Is a means for guiding the up-and-down movement of the inner mast 2, and the inner mast 2 is a means for guiding the up-and-down movement together with the turning and horizontal movement mechanism 4 in which the fork 3 turns and moves horizontally.
Reference numeral 6 denotes a first bracket, which is fixed outwardly from the outer mast 1. Reference numeral 7 denotes a first guide roller which receives a tilt in the front-rear direction.
It is supported rotatably. 8 is a second bracket,
The side surface is fixed to either the front or the rear from the first bracket 6, and has a shape protruding to one side. Reference numeral 9 denotes a second guide roller that receives a left-right inclination.
The second bracket 8 can be freely rotated in the horizontal direction with respect to the floor surface.
It is supported by

FIG. 4 is a perspective view of a warehouse on which a forklift equipped with the device of the present invention travels, and a plurality of racks 11 arranged in the warehouse 10 sandwich a passage 12 therebetween.
The upper part of the passages 11A, 11A,
Guide rails 14 and 15 are horizontal to the floor
It is fixed. When the forklift 13 equipped with the present invention passes through the passage 12 formed between the pair of racks 11A, 11A , the first guide of the forklift 13
The upper and lower surfaces of the guide rails 14 and 15
Abut. The second guide roller 9 is a guide rail.
14 and 15 are brought into contact. Therefore, when the forklift 13 is tilted for a moment in the front-rear direction or the left-right direction, the first and second guide rollers 7 and 9 are driven by the guide rail 1.
4 and 15 to prevent the forklift 13 from tipping over.

[0009]

As described above, according to the present invention, in a forklift having a turning horizontal moving mechanism for turning and moving a fork horizontally through a mast, a guide formed on a rack is formed on the outer side of the outer mast of the mast. abutting guide roller as fixed comprising structure rail, pressurized negative
The forklift may move forward, backward, left or right due to load,
Even when leaning in any direction, use the guide rails
Do not let the forklift fall over under the load.
It becomes. Furthermore, even during an emergency stop, the inertia
Is added to the guide rails and the forklift
There is no defeat . Therefore the forklift itself is mechanical
The thickness of the member is not required to increase the strength.
Also, increase the body weight and lengthen the wheelbase
No structure is required. Also, conventionally, the body is unstable
Operation of lift operation and traveling operation that was difficult due to
And cycle time is shortened by high-speed operation
And a remarkable effect that the driver can drive with peace of mind is achieved.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a side view showing an embodiment of the present invention;

FIG. 3 is a plan view showing an embodiment of the present invention;

FIG. 4 is a perspective view of a forklift equipped with the present invention device and a warehouse.

FIG. 5 is a side view of the forklift equipped with the present invention device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer mast 2 Inner mast 3 Fork 4 Revolving horizontal movement mechanism 6 First bracket 7 First guide roller 8 Second bracket 9 Second guide roller 14 Guide rail

Claims (1)

(57) [Scope of request for utility model registration] 1. A tipping of the forklift comprising through mast pivot horizontally moving mechanism for pivoting horizontally move the fork
In the prevention device , a pair of left and right outer masses of the mast is provided.
The first guide that rotates vertically with respect to the floor
Roller and a second guide roller that rotates laterally with respect to the floor
Installed, on the aisle side upper part of a pair of racks across the aisle,
The U-shaped guide rail that opens to the aisle side
With the first guide roller on the top of the guide rail.
And the second guide roller on the side of the guide rail
Each abutment fall prevention device for a forklift comprising.