KR20160118774A

KR20160118774A - Handcar having driving motor for moving up stairs and method for freightage using the same

Info

Publication number: KR20160118774A
Application number: KR1020150047457A
Authority: KR
Inventors: 이동섭
Original assignee: (주)위니온
Priority date: 2015-04-03
Filing date: 2015-04-03
Publication date: 2016-10-12
Also published as: KR101702003B1

Abstract

A handcar (200) for a stairway, having a rotary stair support connected with a drive motor, according to an embodiment of the present invention, comprises: a frame part (210) which has a frame body (211), a loading panel (213) installed in the bottom of the frame body (211), and a handle (212) installed on the top of the frame body (211); a drive part (220) which is installed on the frame part (210); an operation part (230) which has a rotary stair support (232) operated by the power from the drive part (220); and a control part (C) which has a power button (212a) installed in the frame body (211), a speed selection key (212b), and a lifting selection key (212c) to control the drive part (220) and the operation part (230). Thus, the present invention enables a worker to easily go up the stairs.

Description

TECHNICAL FIELD [0001] The present invention relates to a stair handkerchief having a stair support rotating body interlocked with a driving motor, and a method of lifting and lowering a stowed cargo using the same.

The present invention relates to a stair handkerchief, and more particularly to a stair handkerchief which comprises a rotating shaft, a rotating plate, and a driving motor, wherein at least three wheels mounted on the rotating plate move up a staircase The handkerchief is not only damaged by a slip at a step in a descending process but also a safety accident for a person handling the handkerchief. In addition, when a cargo is moved in a lying state on a flat ground, The present invention relates to a stair handkerchief having a stair support rotating body interlocked with a driving motor capable of solving the problem of the prior art in which the two wheels are simultaneously grounded on the ground and extremely difficult to turn.

That is, in the present invention, the power of the driving motor mounted on one side of the frame is transmitted to the cam type link member, and the driving force corresponding to the rotational motion of the driving motor transmitted to the cam type link member is coupled to the cam type link member It is possible to not only smoothly climb the stairs, but also to move safely in the downward direction. Furthermore, even when the cargo is moved in the lying down state, Quot; a stair handkerchief having a stair support rotating body interlocked with a driving motor ".

In general, as shown in FIG. 1, a handkerchief used when moving a heavy or bulky object includes an object plate 1 on which an object can be placed on an upper surface thereof, A support frame 2 extending upwards from the upper end of the bracket 3 and having a handle 2a at an upper end thereof; a bracket 3 provided at a rear side of the redistributor 1; (4) and a pair of wheels (5) coupled to both ends of the rotating shaft (4).

Therefore, when the handkerchief is tilted backward after the object is placed on the redistribution plate 1, the object is held between the redistribution board 1 and the support frame 2, The user can hold the handle 2a and push or pull the handkerchief to carry the object.

However, such a handkerchief is very convenient when moving along a flat bottom surface. However, when climbing the stairs, the worker pulls the object placed on the handkerchief and the loading plate 1 upward while holding the handle 2a of the handkerchief There is a problem in that it is very difficult.

Particularly, there is a problem in that it is practically difficult to climb the stairs in a state in which a heavy object such as a refrigerator is loaded.

Accordingly, in order to solve such a problem, various types of handcarts have been developed which are capable of climbing the stairs in a state in which heavy objects are loaded. However, such handcarts are inconvenient to use.

Accordingly, a handkerchief with a new structure has been required to solve such a problem. To solve this problem, a handkerchief as disclosed in Korean Utility Model Registration No. 20-0462793 has been proposed.

2, the handkerchief according to the Korean Registered Utility Model No. 20-0462793 is characterized in that the handkerchief comprises: a stacking plate 10 on which a product can be placed on an upper surface; A support frame 20 extending upward and having a knob 21 at an upper end thereof; a bracket 30 provided at a rear side of the redistribution plate 10; a rotation shaft (not shown) rotatably coupled to the bracket 30; A pair of rotating plates 50 coupled to both ends of the rotating shaft 40 and a pair of rotating plates 50 rotatably disposed at circumferential portions of the rotating plate 50 A drive motor 70 connected to the rotation shaft 40 and connected to the drive shaft 70a through a speed reducer 71 and a drive motor 70 connected to the drive shaft 70a, A controller 80 connected to the support frame 20 for controlling the drive of the drive motor 70; When the driving motor 70 is driven, the three wheels 60 move up the stairs by the satellite motion about the rotation axis 40, and the supporting frame A vertical bar 101 extending in the vertical direction at both sides of the support frame 20 and extending in the lateral direction of the support frame 20 at the upper and lower ends of the vertical bar 101, And an auxiliary frame 100 composed of a bar 102 may be further provided to increase the area of the support frame 20 to rigidly support the object placed on the redistribution plate 10, The driving motor 70 or the rotary shaft 40 can rotate the driving motor 70 such that the rotary shaft 40 is not rotated when the driving motor 70 is stopped, A worm 71a connected to the drive shaft 70a of the motor 70, And a worm wheel 71b connected to the output shaft 72 of the wheel 71 and meshed with the worm 71a to rotate the wheel 60 out of the three wheels 60 provided on the rotation plate 50. [ So that the rotating plate (50) can be fixed so as not to be rotated in a state where the rotating plate (50) is in close contact with the ground.

However, in spite of the above-described conventional technique, not only the step can be smoothly moved but also can be safely moved in the descending process, and even when the cargo is moved in the lying down state, The development of a stair handkerchief having an interlocking stair support rotating body has been continuously demanded.

[Prior Art Literature]

1. Domestic Patent Registration No. 10-1409809 (registered on June 13, 2014)

2. Domestic Registration Utility Model Bulletin No. 20-0460238 (Registered May 02, 2012)

3. Domestic Registration Utility Model Bulletin No. 20-0462793 (registered on September 24, 2012)

4. Domestic Registration Utility Model No. 20-0140833 (registered on December 28, 1998)

The present invention is not limited to a staircase having a stair support rotating body which is interlocked with a driving motor which can easily move in a downward direction and which can be safely moved even in the case where a cargo is moved in a laid- And a method for lifting and lowering a load cargo using the same.

According to another aspect of the present invention, there is provided a stair handkerchief having a staircase support rotating body coupled to a driving motor of the present invention, A loading panel 213 installed on the lower side of the frame body 211 and a handle 212 on which the worker 500 can grip the load body 400 are mounted on the upper side of the frame body 211 A frame unit 210 mounted on the frame 210; A driving unit 220 installed in the frame unit 210; An operation part 230 having a step support rotating body 232 operated to receive power from the driving part 220; And a control unit C installed on the frame body 211 to control the driving unit 220 and the operation unit 230 so that the worker 500 can move the load cargo The controller 300 controls the controller 400 to move up the stairs 300 including the first stairs 300a / the second stairs 300b / the third stairs 300c And the lower end of the step support rotating body 232 is rotated in an elliptical path so that the lower end of the step support rotating body 232 can descend.

The driving unit 220 includes a driving motor 221 installed at one side of the frame body 211 and connected to the battery 224 and operated. And a link member 222 installed on the other side of the frame body 211 and installed on and coupled to a rotary shaft 223 rotated by the drive motor 221.

The operation unit 230 includes a center shaft 231 installed on the other side of the frame body 211; And a shaver type step support rotating body 232 having one end hinged to the center shaft 231 and a center part coupled to an end of the link member 222. [

The step support rotating body 232 includes a shovel type fixing member 232a hinged to the center shaft 231; And a shoe type elastic member (232c) adapted to vary the insertion depth of the shaver type fixing member (232a) from the inside of the one end.

On the other hand, a step contact pad member 232d for buffering is mounted on an end of the shoe type elastic member 232c.

The control unit C includes a power button 212a, a speed selection key 212b, and an ascending / descending key 212c, which are provided in the frame body 211.

A method of lifting and transporting a loaded cargo utilizing a stepped hand car 200 having a stepped support rotating body interlocked with a driving motor according to the present invention is a method of lifting and transporting a cargo on a loading panel 213 of a stair handkerchief 200 of the present invention A step S110 in which the loaded cargo 400 prepared on the side is loaded; A step S120 of moving the stacked cargo handler 200 of the present invention loaded on the side of the loading panel 213 to the first staircase 300a to be climbed; In the stair handkerchief 200 of the present invention, the power button 212a is turned on to prepare for up transportation (S130); Step S140 in which the speed selection key 212b is set to the desired ascending transport speed and the ascending / descending selection key 212c is set to the ascending mode at the same time; The drive motor 221 is operated to rotate the link member 222 and the step contact pad member 232d at the lower end of the shoe type elastic member 232c of the step support rotating body 232 interlocked with the link member 222 A step S150 of moving the stepped handkerchief 200 of the present invention upward by forming an elliptical locus so as to climb the first step 300a; The operation of the driving motor 221 continues to form an elliptical locus so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 climbs up the second step 300b, A step S160 of moving the handkerchief 200 upward; The operation of the driving motor 221 is further continued so that an elliptical locus is formed so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 moves up the third step 300c, (S170) of moving the stepped handkerchief 200 in the upward direction.

The lowered transportation method of the loaded cargo using the stair handkerchief 200 having the stepwise support rotating body interlocked with the driving motor of the present invention is a method of transporting the lowered cargo on the loading panel 213 of the stair handkerchief 200 of the present invention A step S210 in which the loaded cargo 400 prepared on the side is loaded; A step S220 of moving the stair handkerchief 200 of the present invention loaded on the side of the stacking panel 213 to the third step 300c to which the stacked cargo 400 is to be lowered; In the stair handkerchief 200 of the present invention, step S230 of turning on the power button 212a to prepare for descending transportation; Step S240 of setting the speed selection key 212b to the desired descending transport speed and simultaneously setting the ascending / descending selection key 212c to the descending mode; The drive motor 221 is operated in the reverse direction to rotate the link member 222 in the reverse direction and the step contact support member 232 of the step support rotation body 232 interlocked with the link member 222, (S250) in which the stepped handkerchief 200 of the present invention is moved in the downward direction by forming an elliptical locus such that the stepped hand lever 232d descends to the third step 300c; An oval trajectory is formed so that the reverse operation of the driving motor 221 continues and the lower end of the shoe type elastic member 232c of the step support rotating body 232 descends to the second step 300b, A step S260 of moving the stepped handkerchief 200 downward; And the driving operation of the driving motor 221 is further continued to form an elliptical trajectory so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 is lowered to the first step 300a, (S270) in which the stepped handkerchief 200 of the present invention is moved in a downward direction.

Therefore, according to the stair handkerchief having the stepwise support rotator interlocked with the drive motor of the embodiment of the present invention having the above-described features, the driving force according to the rotational motion of the drive motor is connected to the link member of the cam system And the step of supporting the step-like support body of the shock absorber has the effect of forming the elliptical trajectory, so that the step can be smoothly climbed.

According to the stair handwheel having the stair support rotating body interlocked with the driving motor of the present invention, the ends of the stair supporting shaft rotate up and down the respective stair steps while forming the elliptical trajectory, Cargo There is another effect that can be moved.

According to the stair handkerchief having the stepwise support rotator interlocked with the drive motor of the present invention, even when the stair handkerchief is laid, one of the left and right drive wheels is not disturbed in any circumference at the time of changing direction, There is another effect that is extremely easy.

1 is an outline view showing a conventional handkerchief according to the prior art.
2 is an external view showing a handkerchief capable of climbing a staircase according to the prior art.
3 is a photograph showing a handkerchief which can climb a staircase according to the prior art.
4 is an outline view showing a stair handkerchief according to an embodiment of the present invention.
5 is a plan view showing a stair handkerchief according to an embodiment of the present invention
Fig. 6 is an operating state diagram showing a rising transportation method of a cargo ascending a stair using the stair handkerchief of the present invention. Fig.
7 is an operational state diagram showing a descending transportation method of a cargo ascending a staircase using a stair handkerchief of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application.

It is to be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ",or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Like reference numerals refer to like elements throughout the specification.

FIG. 4 is an outline view showing a stepped hand car according to an embodiment of the present invention, and FIG. 5 is a plan view showing a stepped hand car according to an embodiment of the present invention.

4 and 5, the stair handkerchief 200 having the stair support rotating body interlocked with the driving motor according to the embodiment of the present invention includes a frame body 211 made of a metal material, A loading panel 213 mounted on the lower side of the frame body 211 and a handle 212 gripping the operator 500 are mounted on the upper side of the frame body 211, (210); A driving unit 220 installed in the frame unit 210; An operation part 230 having a step support rotating body 232 operated to receive power from the driving part 220; And a control unit C having a power button 212a, a speed selection key 212b and a w / o key 212c installed in the frame body 211 to control the driving unit 220 and the operation unit 230. [ The first step 300a and the second step 300b are operated in accordance with the control signal of the control unit C so that the worker 500 moves the load 400 loaded on the loading panel 213. [ The lower end of the step support rotating body 232 is turned to form an oval trajectory so as to move up or down the step 300 including the second step 300b and the third step 300c .

The structure of the frame 210, the driving unit 220 and the operation unit 230 constituting the stepped handkerchief 200 having the stepwise supporting rotary body interlocked with the driving motor of the present invention will be described in more detail. And the effect and effect of the connection.

First, in a stepped handkerchief 200 having a stepwise support rotating body interlocked with a driving motor of the present invention, the frame unit 210 generally comprises a frame body 211 made of metal on a pipe; A loading panel 213 made of a metal material on a panel and installed at a substantially right angle to the lower side of the frame body 211 so that a heavy load 400 is loaded on the upper side; And a handle 212 mounted on the upper side of the frame body 211 so as to allow the operator 500 to grasp the load 400 when the load is transferred.

At this time, it is preferable that the power button 212a, the speed selection key 212b, and the ascending / descending key 212c are installed adjacent to the handle 212. This is because, considering the convenience of operation of the worker 500 The handle 212 may be disposed adjacent to the handle.

In the stepped handkerchief 200 having the stepwise support rotating body interlocked with the driving motor of the present invention, the driving unit 220 is installed at one side of the frame body 211 and connected to the battery 224 A driven drive motor 221; And a link member 222 installed on the other side of the frame body 211 and installed on and coupled to a rotary shaft 223 rotated by the drive motor 221.

In the stepped handkerchief 200 having a stepwise support rotating body interlocked with the driving motor of the present invention, the actuating part 230 includes a center shaft 231 provided on the other side of the frame body 211, ; And a shaver type step support rotating body 232 having one end hinged to the center shaft 231 and a center part coupled to an end of the link member 222. [

Further, the step support rotating body 232 may include a shovel type fixing member 232a hinged to the center shaft 231; And a shoe type elastic member (232c) adapted to vary the insertion depth of the shaver type fixing member (232a) from the inside of the one end.

In particular, a step contact pad member 232d for buffering is preferably mounted on the end of the shoe type elastic member 232c.

In the stepped handwheel 200 having the stepwise support rotating body interlocked with the driving motor of the present invention, the control unit C includes a power button 212a provided adjacent to the handle 212, A button 212a and keys 212b and 212c are connected to a separate control box (not shown) provided adjacent to the handle 212, Respectively.

Fig. 6 is an operating state diagram showing a rising transportation method of a cargo ascending a stair using the stair handkerchief of the present invention. Fig.

As shown in FIG. 6, the ascending / descending transportation method of descending the stairs using the stair handkerchief 200 having the stair support rotating body interlocked with the driving motor of the present invention is characterized in that the stair handkerchief 200 (S110) loading the prepared cargo (400) on the side of the loading panel (213) A step S120 of moving the stacked cargo handler 200 of the present invention loaded on the side of the loading panel 213 to the first staircase 300a to be climbed; In the stair handkerchief 200 of the present invention, the power button 212a is turned on to prepare for up transportation (S130); Step S140 in which the speed selection key 212b is set to the desired ascending transport speed and the ascending / descending selection key 212c is set to the ascending mode at the same time; The drive motor 221 is operated to rotate the link member 222 and the step contact pad member 232d at the lower end of the shoe type elastic member 232c of the step support rotating body 232 interlocked with the link member 222 A step S150 of moving the stepped handkerchief 200 of the present invention upward by forming an elliptical locus so as to climb the first step 300a; The operation of the driving motor 221 continues to form an elliptical locus so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 climbs up the second step 300b, A step S160 of moving the handkerchief 200 upward; The operation of the driving motor 221 is further continued so that an elliptical locus is formed so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 moves up the third step 300c, (S170) of moving the stepped handkerchief 200 in the upward direction.

7 is an operational state diagram showing a descending transportation method of a cargo ascending a staircase using a stair handkerchief of the present invention.

As shown in FIG. 7, the descending transportation method of lowering the stairs using the stair handkerchief 200 having the stair support rotating body interlocked with the driving motor of the present invention is characterized in that the stair handkerchief 200 (S210) loading the prepared cargo (400) on the side of the loading panel (213) of the loading panel (213); A step S220 of moving the stair handkerchief 200 of the present invention loaded on the side of the stacking panel 213 to the third step 300c to which the stacked cargo 400 is to be lowered; In the stair handkerchief 200 of the present invention, step S230 of turning on the power button 212a to prepare for descending transportation; Step S240 of setting the speed selection key 212b to the desired descending transport speed and simultaneously setting the ascending / descending selection key 212c to the descending mode; The drive motor 221 is operated in the reverse direction to rotate the link member 222 in the reverse direction and the step contact support member 232 of the step support rotation body 232 interlocked with the link member 222, (S250) in which the stepped handkerchief 200 of the present invention is moved in the downward direction by forming an elliptical locus such that the stepped hand lever 232d descends to the third step 300c; An oval trajectory is formed so that the reverse operation of the driving motor 221 continues and the lower end of the shoe type elastic member 232c of the step support rotating body 232 descends to the second step 300b, A step S260 of moving the stepped handkerchief 200 downward; And the driving operation of the driving motor 221 is further continued to form an elliptical trajectory so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 is lowered to the first step 300a, (S270) in which the stepped handkerchief 200 of the present invention is moved in a downward direction.

According to the stepped handkerchief 200 having the stepped support rotating body interlocked with the driving motor of the embodiment of the present invention having the above-described features, the power of the driving motor 221 mounted on one side of the frame unit 210 The driving force transmitted to the link member 222 operated by the cam mechanism and caused by the rotational motion of the driving motor 221 transmitted to the link member 222 of the cam mechanism is transmitted to the link member 222 of the cam mechanism The step of supporting the step-supporting rotator 232 of the shock absorber type, which is connected, realizes the operation of forming the elliptical trajectory, so that the step can be smoothly climbed.

According to the stair handkerchief 200 having the stair support rotating body interlocked with the driving motor of the present invention, unlike the conventional handkerchief which has formed the shaft rotation and slid from the staircase in the descending process, The end portion of the step support rotatable body 232 moves up and down the respective stepped stairs 300 while forming an elliptical trajectory so that the loaded cargo 400 can be safely There is another effect that can be moved.

Further, according to the stepped handkerchief 200 having the stepped support rotating body interlocked with the driving motor of the present invention, when the two driving wheels of the left and right sides contact the ground or the step at the same time, In the case of moving the stacked cargo 400 in a lying down state, unlike the conventional handkerchief which is difficult, one driving wheel 214 on each of the left and right sides is brought into contact with the ground or the stairs 300, Any one of the left and right driving wheels 214 is not disturbed in any of the left and right driving wheels 214, so that there is another effect that the direction switching is extremely easy.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the embodiments described above are illustrative in all aspects and not restrictive.

The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

200: a stair handkerchief having a stair support rotating body interlocked with a driving motor
210: frame part 211: frame body
212: handle 212a: power button
212b: Speed selection key 212c: W /
213: loading panel 214: driving wheel
220: driving part 221: driving motor
222: Link member 222a: Link extension pipe passage
223: rotating shaft 224: battery
230: operating part 231: center shaft
232: Stair support rotating body 232a: Shaver type fixing member
232b: Fixing member hinge point 232c: Shoe bar type stretching member
232d: step contact pad member 300: step
300a: first stairway 300b: second stairway
300c: Third Stairway 400: Load Cargo
500: Worker

Claims

As a stair handkerchief,
A frame body 211 made of a metal material, a loading panel 213 installed on the lower side of the frame body 211 to load the load cargo 400 and a handle 212 gripping the worker 500, A frame part 210 mounted on the upper side of the frame body 211;
A driving unit 220 installed in the frame unit 210;
An operation part 230 having a step support rotating body 232 operated to receive power from the driving part 220; And
And a control unit (C) installed in the frame body (211) to control the driving unit (220) and the operation unit (230)
The operator 500 can move the load cargo 400 loaded on the loading panel 213 by moving the first and second steps 300a and 300b in accordance with the control signal of the controller C. [ And the lower end of the step support rotating body 232 is turned in an elliptical path so as to be able to ascend or descend the step 300 including the third step 300c. A stair handkerchief with a stair support frame.

The method according to claim 1,
The driving unit 220,
A driving motor 221 installed at one side of the frame body 211 and connected to the battery 224 and operated; And
A link member 222 installed on the other side of the frame body 211 and installed on and coupled to a rotary shaft 223 rotated by the drive motor 221;
And a stair-step supporting shaft rotatably supported by the driving motor.

The method according to claim 1,
The operation unit 230,
A center shaft 231 installed on the other side of the frame body 211; And
A stepped support rotating body 232 of a sheave type, one end of which is hinged to the central shaft 231 and the middle of which is coupled to an end of the link member 222;
And a stair-step supporting shaft rotatably supported by the driving motor.

The method of claim 3,
The step support rotatable body (232)
A shovel type fixing member 232a hinged to the center shaft 231; And
A shoe type elastic member 232c provided so as to vary the insertion depth of the shaver type fixing member 232a from the inside of the one end portion;
And a stair-step supporting shaft rotatably supported by the driving motor.

5. The method of claim 4,
And a step contact pad member (232d) for buffering is mounted on an end of the shoe type elastic member (232c).

The method according to claim 1,
The control unit (C)
A power selection button 212a provided on the frame body 211, a speed selection key 212b, and a w / o selection key 212c. .

As an ascending transport method of a load,
(S110) loading the prepared cargo 400 on the side of the loading panel 213 of the stepped handkerchief 200 of the present invention;
A step S120 of moving the stacked cargo handler 200 of the present invention loaded on the side of the loading panel 213 to the first staircase 300a to be climbed;
In the stair handkerchief 200 of the present invention, the power button 212a is turned on to prepare for up transportation (S130);
Step S140 in which the speed selection key 212b is set to the desired ascending transport speed and the ascending / descending selection key 212c is set to the ascending mode at the same time;
The drive motor 221 is operated to rotate the link member 222 and the step contact pad member 232d at the lower end of the shoe type elastic member 232c of the step support rotating body 232 interlocked with the link member 222 A step S150 of moving the stepped handkerchief 200 of the present invention upward by forming an elliptical locus so as to climb the first step 300a;
The operation of the driving motor 221 continues to form an elliptical locus so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 climbs up the second step 300b, A step S160 of moving the handkerchief 200 upward; And
The operation of the driving motor 221 is further continued so that an elliptical locus is formed so that the lower end of the shoe type elastic member 232c of the step support rotating body 232 climbs up the third step 300c, A step S170 of moving the stepped handkerchief 200 upward;
Wherein the step of moving the lifter comprises the step of supporting the step motor.

As a descending transportation method of a cargo,
(S210) loading the prepared cargo (400) on the side of the loading panel (213) of the stepped hand car (200) of the present invention;
A step S220 of moving the stair handkerchief 200 of the present invention loaded on the side of the stacking panel 213 to the third step 300c to which the stacked cargo 400 is to be lowered;
In the stair handkerchief 200 of the present invention, step S230 of turning on the power button 212a to prepare for descending transportation;
Step S240 of setting the speed selection key 212b to the desired descending transport speed and simultaneously setting the ascending / descending selection key 212c to the descending mode;
The drive motor 221 is operated in the reverse direction to rotate the link member 222 in the reverse direction and the step contact support member 232 of the step support rotation body 232 interlocked with the link member 222, (S250) in which the stepped handkerchief 200 of the present invention is moved in the downward direction by forming an elliptical locus such that the stepped hand lever 232d descends to the third step 300c;
An oval trajectory is formed so that the reverse operation of the driving motor 221 continues and the lower end of the shoe type elastic member 232c of the step support rotating body 232 descends to the second step 300b, A step S260 of moving the stepped handkerchief 200 downward; And
The operation of the driving motor 221 in the reverse direction is further continued to form an elliptical locus such that the lower end of the shoe type elastic member 232c of the step support rotating body 232 is lowered to the first step 300a, The step (S270) in which the stepped handkerchief 200 of the present invention is moved downward;
And a lowering step of lowering the conveyance of the cargo using the stair handkerchief having the stepwise supporting rotation body interlocked with the driving motor.