JP2015030621A5 - - Google Patents

Description

The present invention relates to a method of unloading at low truck and this from a high place, and more particularly, down from the bed of a delivery vehicle that is not equipped with a lifting machine such as a tail gate lifter, in the truck and this one person luggage rests Related to the method.

In addition, with respect to the downward movement of the wheel, if an appropriate expansion / contraction means is used as shown in FIG. 1, or if the carriage is dedicated to a specific vehicle as shown in FIG. 7, the fulcrum 7a provided on the folding leg 7 is provided. or the folding legs 7 rotates about, as shown in FIG. 8, the structure in which meshed pinion gear 10 with the rack gear 8 provided in the leg 9, when to downward movement of the wheels, manual or suitable drive It may be performed automatically by means.

Then, the support of the carriage with the wheel after moving the wheel downward is preferably performed by moving the wheel downward until the wheel located on the high side 4 of the step slightly floats (upward movement). The means for supporting is not particularly limited, but in consideration of the weight and structure of the supporting means, a supporting means (adjusting means) using gas pressure or liquid pressure is preferable. Moreover, you may use this support means as a drive means when moving the wheel mentioned above downward. In the case of using the rack gear 8 and the pinion gear 10 described above, the support means may be constituted by an electric drive device such as a motor.

Further, the means for returning the wheel extending downward and lowering the carriage 1 located above the lower side 5 of the step is not particularly limited, but the wheel support means (adjustment means) described above is not limited. The return means (descent means) using gas pressure or liquid pressure is preferable. That is, the wheel extending downward may be returned by reducing the pressure of the gas or liquid. In the case of using the rack gear 8 and the pinion gear 10 described above, the return means (descent means) using an electric drive device such as a motor is preferable as the return means (descent means).

DESCRIPTION OF SYMBOLS 1 ... Bogie 2a ... Wheel 2b ... Wheel 3a ... Wheel 3b ... Wheel 4 ... High side 5 ... Low side 6 ... Supporting point 7 ... Folding leg 7a ... Supporting point 8 ... Rack gear 9 ... Leg 10 ... Pinion gear

Claims (11)

A method of lowering a dolly from a high place to a low place, when a dolly that is traveling in one direction or a wheel of the dolly is approaching an edge on a high side of a step, a part of wheels that are provided on the front side of the step Out of the edge and positioned in the air, move the wheel downward to support the carriage on the ground on the lower side of the step, then advance the carriage and some of the wheels provided on the rear side of the above Move the wheel out of the edge and place it in the air and move the wheel downward to support the carriage on the ground on the low side of the step, then put the wheel remaining on the high side of the step out of the edge A method of lowering a cart from a high place to a low location, wherein the vehicle is placed in the air and then the ground wheel on the low place side is returned and the cart located above the low place is lowered.   The wheel that moves downward is held in a state after being moved at least by the pressure of gas or liquid after being moved, and can be returned by reducing the pressure of gas or liquid. 1. A method for lowering the cart described in 1 from a high place to a low place.   2. The method for lowering a cart from a high place to a low location, wherein the wheels moving downward are provided outside the loading platform in a direction orthogonal to the traveling direction of the cart.   The wheel moving downward is a wheel provided as a pair of outermost both sides or innermost both sides among a plurality of wheels arranged in a direction orthogonal to the traveling direction of the carriage. 1. A method for lowering the cart described in 1 from a high place to a low place.   2. The method of lowering a cart from a high place to a low location according to claim 1, wherein at least one of the wheels moving downward is provided so as to be able to advance and retreat in a traveling direction of the cart.   The method of lowering a cart from a high place to a low place according to claim 1, wherein at least one of the wheels that do not move downward is provided on the rear side in advance so as to be able to advance and retreat in the traveling direction of the cart.   The movement of the wheel downward means that the carriage according to claim 1 is operated from a high place to a low place by operating a support provided with the wheel using a drive mechanism constituted by a rack gear, a pinion gear and a drive means. How to unload. 2. The cart according to claim 1, wherein two or more wheels are provided inside or outside the cart at four corners of the cart in a plan view of the cart. How to unload. In a dolly that can be moved from a flat high place to a flat low place,
A plurality of support columns that are foldable or extendable;
First and second wheel groups provided at the lower end of each column so as to move up and down as the column moves, and the first wheel group provided on the column on the front side of the carriage, , First and second wheel groups consisting of a second wheel group provided on a prop on the rear side of the carriage,
A third wheel group,
With
The third wheel group supports the carriage in cooperation with the second wheel group when the carriage travels at a high place and the first wheel group passes one edge of the high place. And when the second wheel set passes through one edge of the high place after the first wheel set is lowered and landed, the first wheel set in the low place and the third wheel set in the high place The cart is arranged so that it can be arranged by moving or moving to a position where the cart can support the cart in cooperation with each other. In a dolly that can be moved from a flat high place to a flat low place,
A plurality of struts extending in the vertical direction, and a plurality of struts provided with rack gears along the length direction of the struts;
Each pinion gear provided to mesh with each rack gear;
Driving means capable of driving each pinion gear;
First and second wheel groups provided at the lower end of each column so that each pinion gear is driven to move up and down as the column moves along the length direction. First and second wheel groups comprising a first wheel group provided on the support column and a second wheel set provided on the support column on the rear side of the carriage;
A third wheel group,
With
The third wheel group supports the carriage in cooperation with the second wheel group when the carriage travels at a high place and the first wheel group passes one edge of the high place. And when the second wheel set passes through one edge of the high place after the first wheel set is lowered and landed, the first wheel set in the low place and the third wheel set in the high place The cart is arranged so that it can be arranged by moving or moving to a position where the cart can support the cart in cooperation with each other. The cart according to claim 9 or 10, wherein at least one of the first wheel group and the second wheel group is configured to be capable of moving back and forth in the traveling direction of the carriage.