JP3768083B2 - Picking forklift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a picking forklift having a structure in which a driver's cab is raised and lowered together with a cargo handling device having a fork, and more particularly to a technique for improving picking workability and safety.
[0002]
[Prior art]
In general, some picking forklifts have a configuration in which a cab is provided so as to be movable up and down, and a cargo handling device for three-way stacking is attached to the cab.
[0003]
This kind of picking forklift can work to load and take out a small amount of luggage on the rack shelf individually by raising and lowering the cab (hereinafter referred to as picking operation), and the rack shelf installation interval is relatively narrow Even if it is a place, the loading and unloading work (hereinafter referred to as pallet work) of the cargo placed on the pallet by moving or turning the fork of the cargo handling device in the traveling direction of the vehicle and the three directions on the left and right sides Since it can be performed, it has the advantage that it can play two roles.
[0004]
FIG. 4 is a perspective view showing a schematic configuration of such a conventional picking forklift.
[0005]
In this conventional picking forklift, a cab 3 is provided on a pair of left and right masts 2 erected on a vehicle body 1 having a traveling mechanism so that the cab 3 can be moved up and down. The cab 3 has a fork 22 for three-way stacking. The cargo handling device 4 is attached.
[0006]
The driver's cab 3 is projected toward the cargo handling device 4 side from the left and right support columns 7 provided on the close side of the mast 2, the wall surface portion 8 positioned between these support columns 7, and the upper and lower ends of each support column 7. The wall portion 8 is provided with a travel control lever 11 for adjusting the speed of the vehicle main body 1 and a steering handle 12 for turning control, and the cargo handling device 4 of the floor portion 9. A cargo handling operation unit 15 for operating the cargo handling device 4 is erected at the center of the end portion on the side.
[0007]
Further, each end 7 of the operator guard 3 for preventing the operator from falling is attached to the left and right columns 7 of the cab 3 so as to be swingable. It is possible to undulate from a parallel flat state to an upright state substantially parallel to the column 7.
[0008]
On the other hand, in the cargo handling device 4 described above, a shift carriage 19 is provided so as to be movable left and right along a rack portion 18 provided on each side surface of the floor portion 9 and the ceiling portion 10 of the cab 3. A pair of left and right submasts 21 is rotatably mounted between upper and lower arm portions 20 of 19, and a fork 22 is attached to the submast 21 via a finger bar 23 so as to be movable up and down.
[0009]
The shift carriage 19 is driven left and right along the rack portion 18 by a hydraulic motor 26 and a pinion gear 27 built in the shift carriage 19, and is also driven by a hydraulic motor and gear (not shown) built in the shift carriage 19. The sub-mast 21 is driven to rotate, and the fork 22 is moved up and down along the sub-mast 21 by a hydraulic cylinder 28 and a sub-lift chain 29 provided on the sub-mast 21. Pallet work can be performed in the traveling direction and the three directions on the left and right sides.
[0010]
Further, after raising the cab 3 to the required height along the mast 2, the operator pulls up the protective guard 16 and then moves onto the pallet supported by the fork 22 so that the picking operation can be performed.
[0011]
[Problems to be solved by the invention]
By the way, in the picking forklift having such a conventional configuration, as described above, since the cargo handling operation portion 15 is erected from the position of the center of the end portion of the floor portion 9 on the cargo handling device 4 side, The following problems are pointed out.
[0012]
(1) Since it is necessary to ensure a space for installing the cargo handling operation unit 15 at a location facing the cargo handling device 4 on the floor 9 of the cab 3, the space around the foot becomes narrower, Movement is restricted.
[0013]
(2) When the picking operation is performed after the protective guard 16 is lifted upward, the cargo handling operation unit 15 is always present on the front surface of the cab 3 on the cargo handling device 4 side. It may become an obstacle at the time and interfere with picking work.
[0014]
(3) Further, except when performing picking work, the guard guard 16 is urged to be always kept downward to prevent the operator from falling down, but depending on the operator, May be performed while the protective guard 16 is lifted upward, and it is difficult for the operator to thoroughly implement a safe operation.
[0015]
In addition, the conventional cargo handling operation part 15 is located outside the center of the end of the floor 9 on the side of the cargo handling device 4 as shown in FIG. Although there are some which are arranged on the right side or the left side, even in that case, since the cargo handling operation unit 15 is erected from the floor 9 of the cargo handling device 4 is the same configuration, the above (1) to (3 ) Can be pointed out as well.
[0016]
The present invention has been made to solve the above-described problems, and can perform picking work more easily than before, and can take a large space around the foot when operating the operation unit. An object of the present invention is to provide a picking forklift with improved safety.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is provided with a cab that can be raised and lowered on a mast that is erected on a vehicle body for traveling, and the cab has a fork handling device for three-way stacking having a fork. In a picking forklift provided with a protective guard for preventing the operator from falling down, an operating part for operating the cargo handling device is attached to the protective guard. When the protective guard is in a flat state, it is positioned facing the cargo handling device, and when the protective guard is in an upright state, it is positioned upward together with the protective guard .
[0018]
As a result, when the protective guard is pushed upward, the operation unit is also moved upward. At this time, since there is no obstacle at the location facing the cargo handling device side of the cab, the picking operation can be easily performed. In addition, since it is not necessary to secure a place for installing the operation unit at the location facing the cargo handling device on the cab, the space around the feet can be taken large and the operator can move easily. Since the operator cannot operate the operation unit unless the protective guard is lowered, safety is ensured.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view showing an entire picking forklift according to an embodiment of the present invention, FIG. 2 is a plan view showing a cab portion of the picking forklift, and FIG. 3 is a side view showing the same cab portion. The parts corresponding to those in the conventional example shown in FIG.
[0020]
In the picking forklift of this embodiment, a cab 3 is provided on a pair of left and right masts 2 erected on a vehicle main body 1 having a traveling mechanism so that the cab 3 can be moved up and down. A loading / unloading device 4 for stacking is attached.
[0021]
The driver's cab 3 includes a pair of left and right support columns 7, a wall surface portion 8 positioned between these support columns 7, and a floor portion 9 and a ceiling portion 10 projecting from the upper and lower ends of each support column 7 toward the cargo handling device side. And have. A pair of left and right lift brackets 32 are fixed to the wall surface portion 8, and a guide roller 33 is attached to the lift bracket 32, and the cab 3 is moved up and down along the mast by the guide rollers 33. Yes.
[0022]
A feature of this embodiment is that a driving operation unit 34 for driving the vehicle body is provided on the wall surface 8 side of the cab 3, while a support shaft 37 is fixed to each of the left and right support columns 7. Each end of the protective guard 16 for preventing the operator from falling is attached to the support shaft 37 via the mounting bracket 36 so as to be swingable, so that each protective guard 16 is in a flat state substantially parallel to the floor portion 9. To an upright state substantially parallel to the support 7. These protective guards 16 are formed, for example, by bending a pipe material.
[0023]
A cargo handling operation unit 35 for performing a cargo handling operation is attached to one side of the left and right protection guards 16. When the protection guard 16 is lowered and brought into a flat state, the cargo handling operation unit 35 is loaded with cargo. Facing the device.
[0024]
The driving operation unit 34 is provided with a travel control lever 11 for adjusting the speed of the vehicle body, a steering handle 12 for turning control, a lift lever 40 for raising and lowering the cab 3, a key switch 41, and a direction indicator lamp. A switch 42, a horn button 43, and the like are provided.
[0025]
On the other hand, the cargo handling operation unit 35 is provided with a shift lever 45 that moves the fork to the left and right via the shift carriage, a rotate lever 46 that turns the fork, a sub-lift lever 47 that moves the fork up and down, and the like. An electric wire or the like necessary for performing control according to the operation of each lever 45 to 47 is connected to a controller (not shown) provided in the cab 3 through the inside of the protective guard 16.
[0026]
Therefore, in the picking forklift of this configuration, after raising the cab 3 to a predetermined height along the mast 2, when the operator pushes up the protective guard 16 to which the cargo handling section 35 is attached, the cab 3 Since there are no obstacles on the front side of the cargo handling device, it is possible to easily transfer to a pallet (not shown) supported by the fork 22 and to perform picking work easily. In addition, since it is not necessary to secure a place for installing the cargo handling operation unit 35 on the cab 3, a large space around the feet can be taken, and the operator can move easily. Furthermore, since the operator cannot operate the cargo handling operation unit 35 unless the protective guard 16 is lowered, safety is ensured.
[0027]
The cargo handling device 4 is provided such that a shift carriage 19 can be moved to the left and right by driving an oil motor 39 along a rack portion 18 provided on each side surface of the floor portion 9 and the ceiling portion 10 of the cab 3. A rotating head 48 is provided on the shift carriage 19 so as to be movable up and down by a sub-lift chain 29, and a fork 22 is rotatably attached to the rotating head 48 through a finger bar 23 by driving an oil motor 49. As a result, the fork 22 is switched between the traveling direction of the vehicle body 1 and the three directions on the left and right sides so that the pallet operation can be performed.
[0028]
In the above-described embodiment, the cargo handling operation unit 35 is attached to one side of the protection guard 16 separated from the left and right. However, in the case where the protection guard 16 is integrated in the left and right, the cargo handling operation unit 35 is attached to the center. It is also possible to adopt a configuration.
[0029]
【The invention's effect】
According to the picking forklift according to the present invention, the following effects can be obtained.
[0030]
When the protective guard is pushed upward, the operation part moves upward, so that there is no obstacle on the front side of the cab on the cargo handling device side, so that picking work for loading and taking out a small amount of articles can be performed very easily. it can.
[0031]
In addition, since it is not necessary to secure a place for installing the operation unit at the location facing the cargo handling device side of the cab, it is possible to make a large space around the foot when operating the operation unit. It becomes easy to move.
[0032]
Furthermore, since the operator cannot operate the operation unit unless the protective guard is lowered, safety can be ensured and the operator can thoroughly perform safe operation.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire picking forklift according to an embodiment of the present invention.
FIG. 2 is a plan view showing a cab portion of the picking forklift according to the embodiment of the present invention.
FIG. 3 is a side view showing a cab portion of the picking forklift according to the embodiment of the present invention.
FIG. 4 is a perspective view of a conventional picking forklift.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle main body 3 Driver's cab 4 Cargo handling device 16 Protection guard 35 Cargo handling operation part (operation part)

Claims (1)

A driver's cab can be moved up and down on a mast erected on the vehicle body for traveling, and a cargo handling device for three-way stacking having a fork is attached to the driver's cab, and protection for preventing the operator from falling. In picking forklifts with guards that can be raised and lowered,
An operation unit for operating the cargo handling device is attached to the protective guard,
The picking forklift , wherein the operating portion is located facing the cargo handling device when the protective guard is flattened, and is positioned upward together with the protective guard when the protective guard is raised .

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