JPH04345543A - Cargo handling vehicle - Google Patents

Abstract

PURPOSE:To prevent collapse or dispersing of a load in loading or unloading by moving the load up and down or front and rear while keeping it in the horizontal condition. CONSTITUTION:A load-carrying platform 13 and an outrigger 14 are provided on the chasis frame 11 of a vehicle, a guide rail 15 is laid along the load- carrying platform 13, a main pillar 16 is standingly provided on the front end of the load-carrying platform 13 and an expansion boom device 17 is pivotally supported with the pillar, an expansion mast device 30 moving front and rear guided with the guide rail 15 is provided on the extreme end of the expansion boom device 17, and a fork 35 is fitted to the mast device.

Description

[Detailed description of the invention]

The present invention relates to a cargo handling vehicle that can load and unload containers and the like in a horizontal state.

0002

2. Description of the Related Art As shown in FIG. 10, as shown in FIG. The body 5 of
There is one that loads the body 5 on the ground onto the chassis frame 3 by rotating the body 5 forward. (Refer to Japanese Patent Application Laid-open No. 137225/1983).

However, such a cargo handling vehicle has a drawback that the cargo inside the body 5 is scattered because the body 5 is tilted during cargo handling. Therefore, in order to prevent the cargo from scattering during body cargo handling, cargo handling arms 4F and 4R are provided at the front and rear of the chassis frame 3 to form a parallel link, as shown in FIG. A vehicle capable of loading and unloading bodies has been proposed (
(See Japanese Patent Application Laid-Open No. 63-93642).

However, in a cargo handling vehicle using a parallel link mechanism, when loading and unloading, the body 5 moves in a high position along an arcuate trajectory. Therefore, when operating the cargo handling vehicle indoors, there is a risk that the body 5 may come into contact with the ceiling. Further, when the parallel link mechanism is used, the body 5 must be disposed inside the cargo handling arm 4R, which has the disadvantage that the width of the body 5 becomes narrow.

[0005]

SUMMARY OF THE INVENTION The present invention solves these problems in cargo handling vehicles by moving the cargo vertically and longitudinally while maintaining it in a horizontal state during loading and unloading. To provide a vehicle with a cargo handling device that prevents cargo from collapsing or scattering and allows cargo handling to be carried out safely even indoors without the risk of contact with the ceiling.

[0006]

[Means for Solving the Problems] The cargo handling vehicle of the present invention includes an outrigger and a loading platform on a chassis frame, a guide rail is laid in the front and back direction along the loading platform, and a main pillar is erected at the front end of the loading platform. The top end of the base boom of a telescopic boom device having a base boom and a tip boom is pivotally supported at the upper end of the main column, and the top end of the boom is guided by a guide rail. The above problem is solved by providing a telescoping mast device that includes a base that moves back and forth and a lifting mast, and by attaching a load support to the lifting mast.

[0007]

[Operation] When loading a cargo, the telescopic boom device is extended, the lifting mast is lowered, the cargo handling vehicle is retreated from in front of the cargo, and the support is inserted under the cargo. Next, after the outriggers are extended and grounded to ensure the stability of the vehicle, the telescoping mast device is raised and the telescoping boom device is retracted to move the cargo onto the loading platform. Then, the telescopic mast device is lowered slightly to place and secure the cargo on the platform, the outriggers are retracted, and the cargo handling vehicle is driven.

[0008] When unloading cargo, the procedure for loading is reversed.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a cargo handling vehicle which is an embodiment of the present invention. In this embodiment, the cargo handling vehicle 10 includes a cab 12 at the front of a chassis frame 11, a loading platform 13 at the rear thereof, and an outrigger 14 at the rear of the chassis frame 11. Guide rails 15 are laid along both left and right sides of the loading platform 13, and a main pillar 16 is erected at the front end of the loading platform 13. A tip end of a proximal boom 21 of a telescopic boom device 17 is pivotally supported at the upper end of the main column 16 by a pin 18 .

As shown in FIG. 2, the telescopic boom device 17 includes a proximal boom 21, an intermediate boom 22, and a distal boom 2.
3 are slidably fitted in order, and a first cylinder 25 is installed between the proximal boom 21 and the intermediate boom 22, and a second cylinder is installed between the first cylinder 25 and the distal boom 23. The cylinders 25 and 26 can be expanded and contracted by expanding and contracting them sequentially or simultaneously. A telescopic mast device 30 is provided at the distal end of the distal end boom 23 of the telescopic boom device 17 .

As shown in FIGS. 3 and 4, the telescopic mast device 30 has a base 3 fixedly attached to the tip of the tip boom 23.
1, a lifting mast 32 is slidably fitted on the lifting mast 32, and a lifting cylinder 33 is attached between the base 31 and the lifting mast 32, and the lifting cylinder 33 expands and contracts to lift the lifting mast 3.
2 can be raised and lowered. A bracket 34 is protruded from the rear surface of the lifting mast 32.
A fork 35 is attached to 4 with a pin 36 as a support for the load.

Guide rails 1 are provided at both left and right ends of the base 31.
A guide roller 37 that engages with the mast device 5 is attached, and when the telescopic boom device 17 extends or contracts, the telescopic mast device 30 is guided by the guide rail 15 and moves rearward or forward. When loading the container 40 as cargo, the telescopic boom device 17 is extended as shown in FIG. 35 under the container 40. Next, the outriggers 14 are extended and grounded to ensure the stability of the vehicle, and then the lifting cylinder 33 is extended to raise the lifting mast 32 and lift the container 40 as shown in FIG. Then, as shown in FIG. 6, the telescopic mast device 17 is retracted to move the container 40 onto the loading platform 13, the telescopic mast device is slightly retracted, the container 40 is placed and fixed on the loading platform 13, and the outrigger 14 is retracted. and causes the cargo handling vehicle 10 to travel.

When unloading the container 40, the cargo handling vehicle 10 is stopped at a predetermined location, the outrigger 14 is grounded to ensure stability, and then the unloading is performed in the reverse order to the above. 7 and 8 show other embodiments of the cargo handling vehicle of the present invention. The embodiment shown in FIG. 7 includes a main column 16 consisting of a lower column 161 and an upper column 162, a telescopic boom device 17 consisting of a base boom 21, two intermediate booms 221 and 222 in front and rear, and a tip boom 23, and a lower elevating mast. 321, upper elevating mast 32
The container 40 is equipped with a telescopic mast device 30 having a large lifting height, and the container 40 is stacked in two tiers.
Suitable for loading and unloading work. Furthermore, since the telescopic boom device 17 is telescopic in four stages, the proximal end boom 21 can be shortened and the cab 12 can be prevented from protruding forward. Furthermore, since the main column 16 is divided into two parts, assembly and disassembly are easy.

The embodiment shown in FIG. 8 is a cab 1 of a cargo handling vehicle 10.
2 is a one-sided cab, and the telescopic boom device 17 is the cab 1.
It is arranged on the lateral side of 2. FIG. 9 shows the lifting mast 32
A towing device 50 is attached as a support to the accident vehicle 51.
An example of transporting is shown.

[0015]

[Effects of the Invention] As explained above, the cargo handling vehicle of the present invention maintains the cargo in a horizontal state during loading and unloading.
By moving the cargo vertically and longitudinally, it is possible to prevent the cargo from collapsing or scattering, and the cargo handling vehicle can be operated safely even indoors without the risk of contact with the ceiling, making it suitable for transporting tall containers. Further, a cargo handling vehicle can be easily constructed by simply providing an outrigger, a loading platform, a guide rail, a main column, a telescoping boom device, and a telescoping mast device to the chassis frame of an ordinary truck. Furthermore, by replacing the supports, it is also possible to use it as a tow truck.

[Brief explanation of drawings]

FIG. 1 is a side view of a cargo handling vehicle that is an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the telescopic boom device.

FIG. 3 is a plan view of the telescopic boom device.

FIG. 4 is a rear view showing a part of the telescopic boom device in cross section.

FIG. 5 is an explanatory diagram of cargo handling work.

FIG. 6 is an explanatory diagram of cargo handling work.

FIG. 7 is a side view of a cargo handling vehicle according to another embodiment.

FIG. 8 is a side view of a cargo handling vehicle according to another embodiment.

FIG. 9 is a side view of a cargo handling vehicle showing another example of a support.

FIG. 10 is a side view of a conventional cargo handling vehicle that rotates a cargo handling arm rearward.

FIG. 11 is a side view of a conventional cargo handling vehicle in which a parallel link is configured on the cargo handling arm.

[Explanation of symbols]

10 Cargo handling vehicle 11 Chassis frame 13 Loading platform 14 Outrigger 15 Guide rail 16 Main pillar 17 Telescopic boom device 21 Base end boom 22 Intermediate boom 23 Tip boom 30 Telescopic mast device 31 Base 32 Lifting mast 35 Fork

Claims (2)

[Claims] Claim 1: A chassis frame is provided with an outrigger and a loading platform, a guide rail is laid in the longitudinal direction along the loading platform, a main pillar is erected at the front end of the loading platform, and a main pillar is provided at the upper end of the main pillar. A telescopic boom device includes a base boom and a distal boom, and the distal end of the proximal boom is pivotally supported, and the distal end of the distal boom is provided with a base that moves back and forth while being guided by the guide rail, and an elevating mast. A cargo handling vehicle comprising a telescopic mast device and a load support attached to the elevating mast. 2. The cargo handling vehicle according to claim 1, wherein the telescoping boom device is a multistage telescoping boom device in which an intermediate boom is fitted between a base end boom and a distal end boom.