JPH0541559B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a side shift device for a working tool in a cargo handling vehicle.

(Prior Art) A cargo handling vehicle that is equipped with a lifting platform that can be raised and lowered along a mast provided at the front end of the vehicle body, and that is equipped with a fork for cargo handling has been well known as a forklift truck.

Conventionally, in this type of cargo handling vehicle, the fork cannot be moved laterally, and it is difficult to align the fork laterally with respect to the object to be transported during work.

Therefore, for example, in Japanese Utility Model Application No. 60-163655, it has been proposed that the fork mounting base is movable in the left and right directions with respect to the lifting platform, so that the forks can be moved in the left and right directions.

(Problem to be Solved by the Invention) However, according to the above structure, the mounting base is supported so as to be movable in the left and right direction along the guide frame provided on the lifting platform, and the guide frame and the mounting base are It is configured to have approximately the same width in the left and right direction.

Therefore, if the mounting base is shifted left or right,
There was a drawback that the guide frame and the mounting base were misaligned in the front-rear direction, increasing the overall width in the left-right direction. Furthermore, since the guide frame is configured to have approximately the same width as the mounting base, it has the disadvantage of being heavy and bulky.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to prevent the overall width from increasing and to reduce the weight even when the mounting base is shifted in the left-right direction.

(Means for Solving the Problem) The technical means is to equip a mast 10 erected at the front end of the vehicle body 1 with an elevating platform 14 that can be raised and lowered, and to attach a mounting frame 26 for a work tool 35 to the elevating platform 14. It is provided so that it can be moved and operated in the left and right directions, and a mounting frame 26 is attached to the lifting platform 14 by means of guide wheels 22, 2.
Guide frame 1 that guides and supports in the left and right direction via 4
A side shift device for a working tool in a cargo handling vehicle, in which a plurality of guide frames 9 and 20 are provided spaced apart in the left-right direction, and each outer end of the guide frames 19 and 20 at both ends is located inward from the outer end of a mounting frame 26. The upper guide frame 19 is formed with an upwardly open guide groove 21 into which the upper frame 27 of the mounting frame 26 is inserted and whose lower surface is supported by the guide ring 22.
The lower guide frame 20 has a lower frame 28 of the mounting frame 26.
A downwardly open guide groove 23 is formed into which the guide groove 23 is inserted and whose rear surface is supported by a guide ring 24.

(Function) According to the present invention, a plurality of guide frames 19 and 20 that guide and support the mounting frame 26 are provided spaced apart in the left-right direction, and the guide frames 19 and 20 at both side ends are provided.
Since each outer end of the guide frames 19, 20 and the mounting frame 26 are located inward from the outer ends of the mounting frame 26, even if the mounting frame 26 is moved in the left-right direction, the total width of the guide frames 19, 20 and the mounting frame 26 increases. can be prevented and is easy to operate.

Further, the weight can be reduced compared to a case where the guide frames 19 and 20 are provided over the entire length of the mounting frame 26 in the left and right direction.

(Embodiment) Hereinafter, embodiments of the present invention will be described based on the drawings. In FIGS. 1 to 4, 1 is a vehicle body, 2 is a
is a front wheel, 3 is a driver's seat, 4 is a steering wheel, and 5 is a safety frame.

A fixed mast 10 is disposed at the front end of the vehicle body 1, is pivotally connected to the vehicle body 1 via a pair of left and right brackets 11, and can be tilted by a tilt cylinder 12. The fixed mast 10 is provided with a pair of left and right elevating masts 13 that are movable up and down relative to the fixed mast 10, and an elevating platform 14 is provided that is movable up and down with respect to the elevating masts 13. Lifting platform 14
A pair of left and right brackets 16 and an upper and lower connecting member 17 installed between the front ends of both brackets 16.
and a guide ring 18 provided on the outside of the bracket 16. A pair of upper and lower guide frames 19 and 20 are provided at the front ends of both brackets 16 and at the front side of the upper and lower connecting members 17, respectively. As shown in FIG. 3, the upper guide frame 19 is provided with a guide groove 21 that is open upwardly and oriented in the left-right direction, and a guide wheel 22 such as a guide roller is provided below the guide groove 21 and rotates about the axis in the front-rear direction. It is prepared at will. In addition, the lower guide frame 20 is provided with a guide groove 23 that is open downward and is oriented in the left-right direction.
A guide ring 24 such as a guide roller is provided on the rear side of the guide groove 23 so as to be rotatable about an axis in the vertical direction.

26 is framed in a horizontally long rectangular shape, and the guide frame 1
9, 20, and is arranged at the same position in the front-back direction as the guide frames 19, 20 of the lifting platform 14.
0 so as to be movable in the left and right direction.
That is, the upper frame 27 of the mounting frame 26 is inserted into the guide groove 21 of the upper guide frame 19, and the guide ring 22 is inserted into the guide groove 21 of the upper guide frame 19.
is placed on top. Further, the lower frame 28 of the mounting frame 26 is inserted into the guide groove 23 of the lower guide frame 20, and the rear side of the lower frame 28 is supported in abutting manner by the guide ring 24. The side frame 32 of the mounting frame 26 is arranged outward from each guide frame 19, 20.

Reference numeral 30 denotes a shift cylinder for shifting the mounting frame 26 in the left-right direction, and is telescopically attached to a bracket 31 bored in the lower surface of the upper guide frame 19 and a side frame 32 of the mounting frame 26. By expanding and contracting the shift cylinder 30, the mounting frame 26 can be freely moved in the left and right directions.

Reference numeral 35 denotes a pair of left and right forks, which are exemplified as work tools, and the upper portions of the forks are removably fitted onto the left and right sides of the upper frame 27, and are fixed with bolts 36 so as to be adjustable in left and right directions.

According to the above embodiment, the lifting and lowering operation of the lifting platform 14;
By operating the fixed mast 10 in combination with appropriate tilting operations, the object to be transported is placed on the fork 35 and the transport work is performed.

Further, when the shift cylinder 30 is expanded or contracted, the mounting frame 26 is guided and moved in the left-right direction along the guide frames 19 and 20.

At this time, since the guide frames 19, 20 are configured to be short in the left-right direction, even if the mounting frame 26 is moved in the left-right direction, the total widths of the guide frames 19, 20 and the mounting frame 26 do not increase and remain constant. and
When cargo gets in the way in a narrow passage, all you have to do is shift to the side, making it easy to operate.

Further, since the guide frames 19 and 20 are divided into a plurality of parts in the left-right direction, and the length in the left-right direction is kept to a minimum, the weight can be reduced.
Moreover, since the guide frames 19, 20 and the mounting frame 26 are arranged at the same position in the longitudinal direction, the distance from the mast 10 to the fork 35 in the longitudinal direction can be shortened, resulting in a good weight balance in the longitudinal direction. At the same time, the moment due to the load acting on the fork 35 can be reduced, and the maximum lifting weight can be increased. Moreover, it has a simple configuration and can be manufactured at low cost.

(Effects of the Invention) According to the present invention, an elevating platform is provided on a mast erected at the front end of a vehicle body so as to be movable up and down, and a mounting frame for a work tool is provided on the elevating platform so as to be movable in left and right directions. , the elevating platform is provided with a plurality of guide frames spaced apart in the left-right direction for guiding and supporting the mounting frame in the left-right direction via guide wheels, and each outer end of the guide frame at both ends is closer to the outer end of the mounting frame. It is located inward, so even if the mounting frame is moved in the left and right direction, the overall width does not increase, providing good operability. Further, since the guide frames are short and spaced apart, the weight can be reduced. On top of that, an upwardly open guide groove is formed in which the upper frame of the mounting frame is inserted into the upper guide frame and whose lower surface is supported by a guide ring, and the lower frame of the mounting frame is inserted into the lower guide frame. Since a downwardly open guide groove is formed whose rear surface is supported by a guide ring, it is possible to prevent not only the upper part of the mounting frame but also the lower part from inadvertently separating from the guide frame. By providing this on the guide frame side, it is possible to shorten the guide frame while ensuring the shift stroke of the mounting frame.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a side sectional view of the same main part.
FIG. 4 is a plan sectional view of the main part. 1... Vehicle body, 10... Fixed mast, 13... Lifting mast, 14... Lifting number, 19... Guide frame,
20... Guide frame, 22... Guide wheel, 24...
Guide wheel, 26...Mounting frame, 30...Shift cylinder, 35...Fork.

Claims (1)

[Scope of Claims] 1. A lifting platform 14 is provided on a mast 10 erected at the front end of the vehicle body 1 so as to be able to rise and fall freely, and a mounting frame 26 for a work tool 35 is provided on the lifting platform 14 so as to be movable and operable in the left and right directions. The lifting platform 14 is provided with a plurality of guide frames 19 and 20 spaced apart in the left-right direction for guiding and supporting the mounting frame 26 in the left-right direction via guide wheels 22 and 24, and guide frames 19 at both ends. . An upwardly open guide groove 21 whose lower surface is supported by a guide ring 22 is formed,
The lower guide frame 20 has a lower frame 28 of the mounting frame 26.
A side shift device for a working tool in a cargo handling vehicle, characterized in that a downwardly open guide groove 23 is formed into which a guide groove 23 is inserted and whose rear surface is supported by a guide wheel 24.