JPH0940391A - 4-way forklift - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a 4-way forklift which has an excellent assembling propery and an excellent service property of a front wheel, a cylinder, and the like, and is profitable as to the strength. SOLUTION: To a bracket 23 provided to the front end of a reach leg 21, a front wheel 22 is installed allowable to turn, and a leg cover 32 is attached detachably, to the front end of the reach leg 21 through bolts 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a 4-way forklift that is movable in the front-rear and left-right directions, and particularly to a reach leg and a leg cover of the 4-way forklift.

[0002]

2. Description of the Related Art FIG. 9 is a plan view showing a conventional 4-way forklift. Left front wheel 1 and right rear wheel 2 are each 36
It has a caster mechanism capable of turning 0 °, and the right front wheel 3 has a caster mechanism capable of being steered 90 ° by the action of the cylinder 4. The cylinder 4 is hydraulically controlled so that the right front wheel 3 faces the front-rear direction of the vehicle, and the drive wheel 5 that is the left rear wheel is steered, so that the vehicle travels in the front-rear direction like a normal forklift. On the other hand, the cylinder 4 moves the right front wheel 3 to 9
Turn 0 ° and turn to the left and right of the vehicle, and drive wheels 5
The vehicle can be driven in the left-right direction by directing the vehicle in the left-right direction. This 4-way forklift can move in parallel to the desired position without turning the vehicle,
It is especially useful for working in tight spaces.

In such a four-way forklift, since the left front wheel 1 and the right front wheel 3 both have a caster mechanism capable of turning, the reach wheel cover 6 having a wide width covers and protects the front wheel and the cylinder 4. There is a need. Further, as shown in FIG. 10, the upper surface 7 of the front half of the reach leg cover 6 is formed flat so that the fork 8 can be used for temporary storage of the luggage. In order to house the caster mechanisms 3 and 3, the height position of the upper surface 7 needs to be raised, which is higher than the lower surface of the battery 9 arranged at the rear portion of the reach leg. That is, the reach leg cover 6 is shown in FIG.
And has been formed integrally with the frame 10 by welding conventionally.

[0004]

However, since the reach leg cover 6 is an integrally welded structure, the front wheels 1 and 3, the cylinder 4, and the hydraulic piping and the like need to be assembled and maintained.
Service window 11 formed on the side surface of the reach leg cover 6
Alternatively, there is a problem in that workability is poor because work must be performed through an opening near the front wheels. Further, depending on the operating conditions and the usage environment, a large stress is applied to the base of the reach leg, and the welded portion of the reach leg cover 6 is burdened. Further, since the upper surface 7 of the front half of the reach leg cover 6 is high, when the battery 9 is to be inspected or replaced, it is difficult to pull out the battery 9 to the front, and there is also a problem that it is difficult to replace the battery 9. .

The present invention has been made to solve the above problems, and an object of the present invention is to provide a four-way forklift which is excellent in assembling front wheels, cylinders and the like, and has excellent serviceability and strength. . Another object is to provide a four-way forklift that can easily pull out the battery.

[0006]

A four-way forklift according to the present invention is a reach-type four-way forklift having swivel front wheels, and a reach leg having a front wheel rotatably attached to a front end thereof, and a front end of the reach leg. And a leg cover detachably attached to the section. The leg cover may be formed with a cutout portion that allows the battery arranged at the rear end of the reach leg to be pulled out forward along the reach leg. Further, a part of the leg cover facing the cutout may be detachably formed in order to laterally pull out the battery pulled out forward along the reach leg.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a front end portion of a reach leg 21 of a 4-way forklift according to an embodiment of the present invention. The reach leg 21 is the right one of the pair of left and right reach legs, and is provided with a horizontal plate-shaped bracket 23 for mounting the right front wheel 22 and a guard 24 that covers the bracket 23. In addition, an opening 25 for mounting a cylinder for steering the front right wheel in the reach leg 21 is formed in a side portion of the reach leg 21. The right front wheel 22 is rotatably attached to the caster mechanism 26, and the caster mechanism 26 is fixed to the bracket 23 of the reach leg 21 by a plurality of bolts.

As shown in FIG. 2, a cylinder 27 for steering the right front wheel is mounted in the reach leg 21 through the opening 25 and a hydraulic pipe (not shown) is mounted in the cylinder 27, and a metal fitting fixed to the central shaft of the caster mechanism 26 is mounted. Two
8 is connected to one end of a wire 29. The other end of the wire 29 is provided on the right front wheel 22 provided in the driver's seat of the forklift.
The steering direction of the right front wheel 22 can be confirmed by the driver by looking at the indicator. Reach leg 21 bracket 23
Two attachments 30 are formed on the upper surface of the leg cover 32 by using the attachments 30 with bolts 31.
Is detachably attached to the reach leg 21 as shown in FIG.

The leg cover 32 has a shape that covers the upper portion of the bracket 23 and the opening 25 of the reach leg 21, and a cutout 33 is formed on the upper surface of the reach leg 21 and inside thereof. The upper surface of the reach leg 21 is exposed at the cutout portion 33. Also,
The upper surface of the leg cover 32 is formed flat so that luggage can be temporarily placed.

The operation of the cylinder 27 will be described with reference to FIGS. As shown in FIG. 4, the plunger 34 of the cylinder 27 is
The caster mechanism 26 is fixed so that the right front wheel 22 faces the front-rear direction of the vehicle by fully retracting the
When the plunger 34 of the cylinder 27 is sufficiently projected as shown in FIG. 5, the caster mechanism 26 turns 90 ° and the right front wheel 22 is fixed in the left-right direction of the vehicle.

As shown in FIG. 6, a leg cover 36 similar to the right leg cover 32 described above is detachably attached to the front end of the left reach leg 35 of the 4-way forklift. The left reach leg 35 has almost the same structure as the right reach leg 21, but the left front wheel 40 has a caster mechanism that can freely rotate 360 ° and is connected to the caster mechanism 26 of the right front wheel 22. Such a cylinder 27 is not built in. Accordingly, the cylinder mounting opening 25 formed in the right reach leg 21
May not be provided on the left reach leg 35.

A cutout 37 is formed in the left leg cover 36 as in the right leg cover 32. As shown in FIG. 7, the width of the left and right cutouts 33 and 37 is equal to the width of the battery 38 arranged at the rear end of the reach legs 21 and 35.
Is formed in such a size that the leg covers 32 and 36 do not hit the battery 38 even if it is pulled out forward along the reach legs 21 and 35, that is, the battery 38 can be inserted between the notches 33 and 37. Therefore, by connecting the battery 38 to the mast and reaching the mast forward, the battery 38 can be pulled out forward along the reach legs 21 and 35. If necessary, the battery liquid drawn out to the front is replenished with the battery liquid, or the battery 38 is replaced.

Since the above-mentioned leg covers 32 and 36 are detachably attached to the reach legs 21 and 35 by bolts, the leg covers 32 and 36 can be easily removed to set the front wheels 22 and 40, the cylinder 27, hydraulic pipes and the like. It can be attached and maintained. In addition, the leg covers 32 and 36 are provided at the bases of the reach legs 21 and 35.
Since there is no welded portion between the and, there is no risk of damage such as cracks.

In FIG. 6, the flat portions on the upper surfaces of the leg covers 32 and 36 are present up to the root position of the fork 39 when the mast is retracted in order to temporarily put a load. Therefore, the battery 38 is connected to the reach legs 21 and 3
Even if it is pulled out forward along 5, the leg covers 32 and 3
If 6 is not removed, the battery 38 cannot be pulled out to the side of the vehicle because it is obstructed by the rear ends of the leg covers 32 and 36.

Therefore, the leg cover in which the battery pulled out forward along the reach leg is further pulled out to the side of the vehicle so that the battery can be easily replaced is shown in FIG.
Shown in The leg cover 41 has the same outer shape as the leg cover 32 described above as a whole, but includes a leg cover body 42 that covers the upper portion of the front wheel 22, and a detachable cover 43 that is detachably attached to the rear portion of the leg cover body 42. It can be separated into. Like the leg cover 32 shown in FIG. 2, the leg cover body 42 is bolted to reach the leg 2 body.
1 is attached to the bracket 23. On the other hand, the removable cover 43 forms the rear end of the leg cover 41 facing the cutout portion 44 of the leg cover 41, and is provided with a plurality of pins 45. By inserting into the boss, the leg cover body 42 can be easily attached and detached without using a tool.

As shown in FIG. 8, if the pin 45 is pulled out and the removable cover 43 is removed from the leg cover body 42, the battery 38 pulled forward along the reach leg 21 can be pulled further to the side of the vehicle. . Therefore, the battery 38 can be easily replaced.

As described above, in the 4-way forklift according to the present invention, the mounting height of the battery is increased, the mounting heights of various components are increased accordingly, and the height of the center of gravity of the machine base is also increased. Without this, it is possible to achieve both the 4-way mechanism capable of parallel movement in the front-rear direction and the adoption of the front drawer of the battery. Further, the 4-way forklift of the present invention can be manufactured by using the reach leg of the conventional reach type forklift, by attaching the caster mechanism, the cylinder and the like to the front end of the reach leg and by detachably attaching the leg cover. It is possible to provide a 4-way forklift truck at a lower production cost by minimizing the changes from the reach type forklift truck that becomes the vehicle.

[Brief description of drawings]

FIG. 1 is a perspective view showing a front end portion of a reach leg of a 4-way forklift according to an embodiment of the present invention.

FIG. 2 is an assembly diagram when a leg cover is attached to a front end portion of a reach leg.

FIG. 3 is a perspective view showing a front end portion of a reach leg having a leg cover attached thereto.

FIG. 4 is a perspective view showing a state in which the front right wheel faces the front-rear direction of the vehicle by the action of the cylinder.

FIG. 5 is a perspective view showing a state in which the front right wheel faces the left-right direction of the vehicle by the action of the cylinder.

FIG. 6 is a plan view showing a 4-way forklift according to an embodiment of the present invention.

FIG. 7 is a partial side view showing a 4-way forklift according to an embodiment of the present invention.

FIG. 8 is a perspective view showing a leg cover according to another embodiment.

FIG. 9 is a plan view showing a conventional 4-way forklift.

FIG. 10 is a partial side view showing a conventional 4-way forklift.

FIG. 11 is a perspective view showing a conventional leg cover.

[Explanation of symbols]

 21, 35 Reach leg 22 Right front wheel 23 Bracket 24 Guard 25 Opening 26 Caster mechanism 27 Cylinder 30 Fixture 31 Bolt 32, 36, 41 Leg cover 33, 37, 44 Notch 38 Battery 42 Leg cover body 43 Removable cover 45 pins

Claims (3)

[Claims] 1. A reach type four-way forklift having swivelable front wheels, comprising: a reach leg having front wheels rotatably attached to a front end thereof, and a leg cover detachably attached to a front end of the reach leg. A four-way forklift that is characterized. 2. The leg cover according to claim 1, wherein the leg cover has a cutout portion that allows a battery arranged at a rear end portion of the reach leg to be pulled forward along the reach leg. Way forklift. 3. The leg cover according to claim 2, wherein a part of the leg cover facing the notch is detachably formed so as to further pull out the battery pulled out forward along the reach leg. 4 way forklift truck.