KR101840650B1 - Freight transport electric cart - Google Patents

Abstract

The present invention relates to an electric cart for freight transportation. Specifically, the electric cart for freight transportation includes: a polygonal frame; a control unit including a power supply member and a driving motor driven by electricity supplied from the power supply member, wherein the control unit controls the electricity supplied from the power supply member by being installed in rear of the frame; a handle unit installed in the upper part of the control unit to rotate; a footboard unit connected to the rear of the frame; and a wheel unit including a driving wheel connected to the lower surface of the rear of the frame and driven by the driving motor, wherein the wheel unit also includes a steering wheel connected to the lower surface of the front of the frame and rotated by the handle unit. According to the present invention, the electric cart for freight transportation can easily transfer freight loaded on a lower plate of the frame by driving the driving wheel installed in the rear of the lower part of the frame by the driving motor and rotating the steering wheel installed in the front of the lower part of the frame by the handle unit.

Description

{FREIGHT TRANSPORT ELECTRIC CART}

The present invention relates to an electric cart for cargo transportation.

More particularly, the present invention relates to a driving apparatus for a vehicle, which drives a driving wheel provided at a rear lower portion of a frame by a driving motor and rotates a steering wheel provided at a front lower portion of the frame by a handle portion, The present invention relates to an electric cart for transporting cargo.

Typically, a cart is a tool for transporting cargo. Such a cart is largely divided into a manual cart driven by a driver directly, and an electric cart capable of being driven by a driver directly by a force and being driven by a drive motor.

Among them, the manual cart is driven depending on the driver's power, so there is a problem that a lot of power is required to move the cart when there are many cargoes loaded. In addition, since the manual cart requires a lot of power, there are problems that it is difficult to use in the case of the elderly or the handicapped. Especially, when a lot of cargo is loaded, There is a problem that a safety accident may occur.

Accordingly, in recent years, there has been a tendency to favor a motorized cart that can be moved more easily than a manual cart by using a driving motor or the like rather than a manually operated cart that a driver directly applies a force.

As one of related arts, the electric cart is disclosed in the publication No. 10-2017-0043015.

1 is a view showing a conventional electric cart. A conventional electric cart will be described with reference to FIG. 1, which is capable of transporting an object while the driver is aboard, is adjustable in length, and can be stored and easily transported to another place.

The conventional electric cart includes a frame 1 on which an object to be transported can be placed, a caster 2 which is installed in front of the frame 1 and can run in contact with the ground, A pair of driving wheels 4 connected to the frame 1 at a position spaced apart from the rear end of the rear end of the frame 1 by a predetermined distance and having a hub motor 3 for traveling therein, And a footrest (5) supported by the frame (1) between the drive wheels (4) and on which a driver can ride.

However, in the conventional art, there is a problem that when the vehicle runs on an inclined place, the object to be transported on the frame 1 may slide along the inclined direction. In the conventional art, The steering of the caster 2 or the driving wheel 4 can not be controlled, so that there is a problem that it is difficult to perform detailed driving.

Published Japanese Patent Application No. 10-2017-0043015 (Apr. 20, 2017) Registration Utility Model Bulletin No. 20-0413435 (March 31, 2006) Patent Registration No. 10-1485300 (2015.01.15.)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a driving device for a vehicle, which drives a driving wheel provided at a rear lower portion of a frame by a driving motor, The present invention provides an electric cart for transporting cargo, which enables a freight to be carried on a frame to be easily transported by rotating the provided steering wheel.

According to an aspect of the present invention, there is provided an electric cart for transporting cargo, comprising: a frame having a polygonal shape; A controller including a power supply member and a driving motor driven by power supplied from the power supply member, the power supply member being provided behind the frame and controlling power supplied from the power supply member; A handle portion rotatably provided on the upper portion of the control portion; A foot plate coupled to the rear of the frame; And a wheel unit coupled to a rear lower surface of the frame and including a driving wheel driven by the driving motor and a steering wheel coupled to a front lower surface of the frame and rotated by the handle unit.

In addition, the footrest is configured to be rotatable in an upward direction from the bottom, and when the footrest is rotated in the upward direction, a part of the footrest is inserted into the insertion groove of the control unit.

In addition, a sidewall is coupled to the frame along a circumference of the frame to form a space above the frame, and sidewalls provided on the front side and both sides of the sidewall of the frame are rotatable.

A second sprocket coupled to a wheel axis of the steering wheel is coupled to a wheel shaft of the steering wheel, and a second sprocket is coupled to a lower end of the steering wheel. A chain for connecting the first sprocket and the second sprocket is provided.

The frame also includes: a first cylinder and a second cylinder rotatably coupled to the center, the first cylinder and the second cylinder being configured to be directed to the front and rear of the frame; A first cylinder rod and a second cylinder rod, each of which is drawn or drawn by hydraulic pressure in a state in which a part thereof is inserted into the first cylinder or the second cylinder; And a swash plate rotatably connected to the first cylinder rod on the front side of the lower surface and rotatably connected to the second cylinder rod on the rear side of the lower surface.

The frame may further include a jig member having one end coupled to the center of the frame; A lifting plate coupled to the other end of the jockey member; A third cylinder rotatably coupled to the frame, the third cylinder being disposed inside the jockey member; And a third cylinder rod having one end inserted into the third cylinder and the other end drawn or drawn by hydraulic pressure in a state where the third cylinder is engaged with the jockey member.

In addition, the frame may include a proximity sensor provided in front of the frame for sensing an approach of an object, and the control unit may include a speaker for outputting an alarm when an object is detected by the proximity sensor.

According to another aspect of the present invention, there is provided an electric cart for transporting cargo, comprising: a frame having a polygonal shape; A controller including a power supply member and a driving motor driven by power supplied from the power supply member, the power supply member being provided behind the frame and controlling power supplied from the power supply member; A foot plate coupled to the rear of the frame; A main orbit portion coupled to a lower portion of the frame and driven by the driving motor; A fourth cylinder rotatably coupled to the front of the frame; A fourth cylinder rod drawn or drawn by hydraulic pressure in a state in which a part of the fourth cylinder is inserted into the fourth cylinder; And a first subordinate orbital portion rotatably coupled to a front of the main orbit portion and connected to the fourth cylinder rod, the first subordinate orbit portion being tilted up and down according to the drawing and pulling of the fourth cylinder rod.

A fifth cylinder rotatably coupled to the rear of the frame; A fifth cylinder rod which is drawn or drawn by hydraulic pressure in a state in which a part of the fifth cylinder is inserted into the fifth cylinder; And a second auxiliary orbital portion rotatably coupled to the rear of the main orbit portion and connected to the fifth cylinder rod, the second auxiliary orbit portion being vertically tilted as the fifth cylinder rod is drawn out and drawn.

In the electric cart for carrying cargo according to the present invention, the driving wheels provided at the lower rear portion of the frame are driven by the driving motor, and the steering wheel provided at the front lower portion of the frame is rotated by the handle portion So that it is possible to easily carry the cargo carried on the lower plate of the frame.

According to the present invention, when the footrest is rotated in the upward direction, the footrest is inserted between the engaging portion of the footrest and the control unit, so that the user can operate the footrest by stepping on the ground when the user manually operates the footrest.

According to the present invention, since the first cylinder rod and the second cylinder rod are driven by the first cylinder and the second cylinder rotatably coupled to the center of the lower plate of the frame, the first cylinder rod and the second cylinder rod are rotated It is possible to adjust the inclination of the swash plate to be able to maintain the horizontal position easily even in the inclined section.

1 is a view showing a conventional electric cart.
2 is a view showing a powertrain cart for carrying cargo according to an embodiment of the present invention.
Figs. 3A and 3B are views showing the state of the footrest portion shown in Fig. 2A; Fig.
4A and 4B are side walls of an electric cart for carrying cargo according to an embodiment of the present invention.
5A to 5C are views showing a first sprocket, a second sprocket, and a chain of a cart for carrying a cargo according to an embodiment of the present invention.
5D is a view showing a third sprocket of the electric cart for carrying cargo according to the embodiment of the present invention.
6A to 6C are views showing a state in which a swash plate is driven in an electric cart for carrying cargo according to an embodiment of the present invention.
7A and 7B are views showing a state in which the lifting plate of the electric cart for transporting cargo is lifted and lowered according to an embodiment of the present invention.
8 is a view showing a proximity sensor and a speaker of a powertrain cart for carrying a cargo according to an embodiment of the present invention.
9A and 9B are views showing a power cart for cargo transportation according to another embodiment of the present invention.
10A and 10B are views showing a second subordinate orbital part of a cart for carrying cargo according to another embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, 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.

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 the present application, the term "comprises" or "having ", etc. is intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, And does not preclude the presence or addition of one or more other features, integers, integers, steps, operations, elements, components, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concept of the term appropriately in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Further, it is to be understood that, unless otherwise defined, technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Descriptions of known functions and configurations that may be unnecessarily blurred are omitted. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms. In addition, like reference numerals designate like elements throughout the specification. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible.

In the present invention, a driving wheel provided at a rear lower portion of a frame is driven by a driving motor, and a steering wheel provided at a front lower portion of the frame is rotated by a handle portion, The present invention relates to an electric cart for transporting cargo.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electric cart for transporting cargo according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view showing an electric cart for transporting cargo according to an embodiment of the present invention, FIGS. 3A and 3B are views showing an embodiment of the footrest shown in FIG. 2A, FIGS. 4A and 4B are views Fig. 3 is a side view showing a side wall of a cart for carrying cargo according to an embodiment of the present invention.

2 to 4B, the electric cart for transporting cargo according to an embodiment of the present invention includes a frame 10 having a polygonal shape, a power supply member, and a driving motor driven by electric power supplied from the power supply member. A control unit 30 provided at the rear of the frame 10 for controlling power supplied from the power supply member, a handle 40 rotatably mounted on the control unit 30, A pedal part 50 coupled to the rear of the frame 10 and a driving wheel 61 coupled to the rear lower surface of the frame 10 and driven by the driving motor, And a wheel portion 60 including a steering wheel 62 that is coupled and rotated by the handle portion 40.

Although the frame 10 is shown in a rectangular shape in the present invention, it may have a pentagonal shape or a hexagonal shape, and may have a circular shape according to an embodiment.

Further, the frame 10 may be formed by rounding the corners of the frame 10 in order to prevent safety accidents during use due to the nature of the frame 10. The characteristics and weight of the cargo loaded on the electric cart of the present invention As shown in FIG.

A side wall 11 may be coupled to the frame 10 along the periphery of the frame 10 such that a space 11a is formed on the frame 10, The side walls provided on the front side and the both sides can be configured to be rotatable in the downward direction.

That is, a space portion 11a is formed on the upper portion of the frame 10 to allow the cargo to be loaded, and the side wall 11 is rotatable so that the side wall 11 can be rotated downward The cargo may be pushed or lowered and the side wall 11 may be rotated in the upward direction so that the cargo stored in the space portion 11a can be stably stored.

The control unit 30 is disposed behind the upper surface of the frame 10 and controls the power supplied from the power supply member and controls the driving motor And may be configured to be driven in the forward or reverse direction.

In addition, according to the embodiment, the driving speed of the driving motor is adjusted according to a signal inputted through a panel (not shown) formed on the handle portion 40, have.

The handle 40 is provided at an upper portion of the control unit 30 provided at the rear of the frame 10 and is configured to be rotatable with a handle shaft 40a inserted into the control unit 30 .

A detailed description of the configuration in which the steering wheel 62 is rotated according to the adjustment of the handle portion 40 will be described later with reference to FIGS. 5A to 5C.

The footrest part 50 is configured to be rotatable in the upper direction from the lower part and is configured such that a part of the footrest part 50 is inserted into the insertion groove 31 of the control part 30 will be.

At this time, the footrest 50 may have a polygonal shape, preferably a rectangular shape, and may be made of iron or the like to prevent deformation due to the weight of the user.

5a to 5c are views showing a first sprocket, a second sprocket, and a chain of a power cart for cargo transportation according to an embodiment of the present invention. 3 is a view showing a sprocket.

5A through 5C, a first sprocket 41 rotated together with the rotation of the handle 40 may be coupled to the lower portion of the handle 40 of the present invention, And a second sprocket 42 rotatable together with a wheel axis 62a of the steering wheel 62 may be coupled to the wheel shaft 62a of the steering wheel 62. The first sprocket 41 may be coupled to a lower portion of the frame 10. [ And a chain 43 connecting the first sprocket 42 and the second sprocket 42. [

That is, when the user rotates the handle portion 40, the first sprocket 41 connected to the handle shaft 40a of the handle portion 40 is rotated, and when the first sprocket 41 is rotated The chain 43 is driven to rotate the second sprocket 42 and the second sprocket 42 is rotated to rotate the wheel shaft 62 of the steering wheel 62 connected to the second sprocket 42, So that the electric cart of the present invention can be steered.

In the present invention, the electric cart is structured to be steered by the handle 40, but the handle 40 may be electronically sensed according to the adjustment, The electric cart may be configured to be steered.

5d, the wheel shaft 61a of the driving wheel 61 of the present invention is formed in a shape corresponding to the first sprocket 41 so as to be engaged with the first sprocket 41, The third sprocket 44 to be rotated can be engaged.

That is, when the user rotates the handle portion 40, the first sprocket 41 connected to the handle shaft 40a of the handle portion 40 is rotated, and when the first sprocket 41 is rotated The third sprocket 44 configured to engage with the first sprocket 41 is rotated together with the first sprocket 41.

Since the first sprocket 41 and the second sprocket 42 are rotated in the same rotation direction but the third sprocket 44 is directly engaged with the first sprocket 41, The first sprocket 41 and the second sprocket 42 rotate in different rotational directions.

Accordingly, when the user operates the handle portion 40 to rotate the electric cart of the present invention, the drive wheel 61 and the steering wheel 62 are rotated in different rotational directions, So that the electric cart of the invention can be rotated.

6A to 6C are views showing a state in which the swash plate of the electric cart for transporting cargo is driven according to an embodiment of the present invention.

6A to 6C, the frame 10 of the present invention includes a first cylinder 12 rotatably coupled to the center and configured to face the front and rear of the frame 10, Two cylinders 13 and a first cylinder rod 12a and a second cylinder rod 13a which are drawn or drawn by hydraulic pressure in a state in which a part thereof is inserted into the first cylinder 12 or the second cylinder 13, And a swash plate 14 rotatably connected to the first cylinder rod 12a at the front of the lower surface and rotatably connected to the second cylinder rod 13a at the rear of the lower surface.

That is, the first cylinder 12 and the second cylinder 13 are configured such that the first cylinder rod 12a and the second cylinder rod 13a are drawn out or drawn in by using the hydraulic pressure so that the swash plate 14 The inclined plate 14 is tilted forward or backward so that the cargo loaded on the electric cart of the present invention can maintain a balanced posture.

For example, the first cylinder 12 and the first cylinder rod 12a are configured to face the front of the frame 10, and the second cylinder 13 and the second cylinder rod 13a The first cylinder rod 12a is drawn out from the first cylinder 12 and the second cylinder 12b is pulled out from the second cylinder 12a when the electric cart of the present invention is downwardly inclined, The rod 13a is drawn into the second cylinder 13 so that the swash plate 14 can be balanced. When the electric cart of the present invention rises up to the upward inclined section, the first cylinder rod 12a Is drawn into the first cylinder 12 and the second cylinder rod 13a is drawn out from the second cylinder 13 so that the swash plate 14 can be balanced.

At this time, the driving of the first cylinder 12 and the second cylinder 13 may be manually driven according to a user's operation, and the control unit 30 may be provided with a motion sensor, an acceleration sensor, a gyro sensor, And may be configured to be automatically driven according to the inclination of the frame 10.

7A and 7B are views showing a state in which the lifting plate of the electric cart for transporting cargo is lifted and lowered according to an embodiment of the present invention.

7A and 7B, the frame 10 of the present invention is provided with a jockey member 15 whose one end is coupled to the center of the frame 10, a lifting plate 15 coupled to the other end of the jockey member 15, A third cylinder 17 rotatably coupled to the frame 10 and disposed inside the jockey member 15 and one end inserted into the third cylinder 17, And a third cylinder rod that is drawn or drawn by hydraulic pressure in a state of being coupled to the member 15. [

That is, the third cylinder 17 is configured to draw out or draw in the third cylinder rod 17a by using hydraulic pressure, so that the lift plate 16 is folded up, So that the cargo loaded on the electric cart of the present invention can be supplied to a higher position.

For example, when the cargo loaded on the electric cart of the present invention is to be supplied to a high position, the third cylinder rod 17a is drawn out from the third cylinder 17 to unfold the jockey member 15 So that the lifting plate 16 can be lifted upward.

At this time, the driving of the third cylinder 17 may be configured to be manually driven according to a user's operation.

8 is a view showing an embodiment of a proximity sensor and a speaker of the electric cart for carrying cargo according to an embodiment of the present invention.

According to the attached FIG. 8, the frame 10 of the present invention may include a proximity sensor 18 provided at the front thereof for sensing the approach of an object. In the control unit 30 of the present invention, And a speaker 32 that sounds an alarm when an object is detected by the speaker 32. At this time, the control unit 30 controls the alarm sound of the speaker 32 to be larger as the position of the object sensed by the proximity sensor 18 is closer to the proximity sensor 18, It can be controlled so as to be repeated.

That is, the speaker 32 is configured to be controlled by the control unit 30, and may be configured to generate various alarm sounds according to the operation of the control unit 30, and the proximity sensors 18 are composed of a plurality of It can be configured to detect whether the object approaches the front left side of the frame 10 or if the object approaches the front right side of the frame 10 when the frame 10 is provided at the front left side and the front right side .

When the proximity sensor 18 is composed of a plurality of the proximity sensors 18, the control unit 30 controls the front left side of the frame 10 so as to recognize in which direction the object approaches through the alarm sound through the speaker 32 And the alarm sound detected by the proximity sensor 18 on the front right side of the frame 10 may be differently controlled.

For example, when the object is detected by the proximity sensor 18 on the front left side of the frame 10, the control unit 30 can be controlled to make a "band-band" sound, Beep sound "when an object is detected by the proximity sensor 18 on the front right side of the body 10.

FIGS. 9A and 9B are views showing a power cart for carrying cargo according to another embodiment of the present invention, and FIGS. 10A and 10B are views showing a second subordinate orbital part of a power cart for cargo transportation according to another embodiment of the present invention .

9A and 10B, the electric cart for transporting cargo according to another embodiment of the present invention includes a frame 10 having a polygonal shape, a power supply member, and a drive motor driven by electric power supplied from the power supply member. A control unit 30 provided at the rear of the frame 10 to control power supplied from the power supply member, a footrest 50 coupled to the rear of the frame 10, A fourth cylinder 80 coupled to a lower portion of the frame 10 and driven by the driving motor, a fourth orbit 80 rotatably coupled to the frame 10, A fourth cylinder rod 81 which is drawn or drawn by hydraulic pressure in an interpolated state and a second cylinder rod 81 which is rotatably coupled in front of the main orbital section 70 and which is connected to the fourth cylinder rod 81, As the rod 81 is pulled out and pulled in, A first auxiliary track portion 90 which is tilted with.

The frame 10, the controller 30 and the footrest 50 have the same configuration as the frame 10, the controller 30 and the footrest 50 of the electric cart for cargo transportation according to the embodiment of the present invention The detailed description of the frame 10, the control unit 30, and the footing unit 50 will be omitted.

That is, the first subordinate track 90 is configured to be tilted in the vertical direction according to the pulling-out and pulling-in of the fourth cylinder rod 81, so that the first subordinate track 90 is brought into contact with the ground. It is possible to prevent the cargo from being tilted forward so as to prevent the cargo from being dropped or damaged.

In addition, the electric cart for transporting cargo according to the present invention may further include a fifth cylinder 110 rotatably coupled to the rear of the frame 10, a second cylinder 110 which is partially inserted into the fifth cylinder 110, The fifth cylinder rod 111 is rotatably coupled to the rear of the main orbit portion 70 and is connected to the fifth cylinder rod 111 so that the fifth cylinder rod 111 can be moved up and down And a second sub-orbital portion 120 that is tilted in the direction of the first sub-orbital portion 120 may be included.

At this time, the fifth cylinder 110, the fifth cylinder rod 111, and the second subordinate track 120 are connected to the fourth cylinder 80, the fourth cylinder rod 81, and the first subordinate track 90 It is possible to prevent the tilting of the electric cart of the present invention like that of the fourth cylinder 80, the fourth cylinder rod 81 and the first subordinate track 90, .

That is, the first sub-orbital portion 90 is provided in front of the frame 10 to assist the main orbital portion 70, and the second sub-orbital portion 120 is provided at the rear of the frame 10 So that the electric cart of the present invention can be prevented from tilting at an inclined section, so that the cargo can be safely transported.

The first auxiliary orbital portion 90 and the second auxiliary orbital portion 120 are coupled to the main orbital portion 70 by connecting the main orbital portions located on both sides with respect to the frame 10 (Not shown) connecting main slave slaves (not shown) and a first sub-orbital portion located on both sides with respect to the frame 10 are connected to each other, and the main sub- (Not shown) connecting the first and second subordinate orbits 90, 90 and the second subordinate orbital shaft (not shown) connecting the second subordinate orbits respectively disposed on both sides with respect to the first subordinate track 90 and the second subordinate orbital shaft 120 and the main orbit portion 70 may be modified into any other form.

As described above, according to the present invention, the driving wheels provided at the rear lower portion of the frame are driven by the driving motor, and the steering wheel provided at the front lower portion of the frame is rotated by the handle portion, So that it can be easily transported.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It can be seen that branch substitution, modification and modification are possible.

10: frame 11: side wall
11a: space part 12: first cylinder
12a: first cylinder rod 13: second cylinder
13a: second cylinder rod 14: swash plate
15: jaw member 16: winch plate
17: third cylinder 17a: third cylinder rod
18: Proximity sensor
30: control part 31: insertion groove
32: Speaker
40: handle portion 41: first sprocket
42: second sprocket 43: chain
44: Third sprocket
50:
60: wheel portion 61: drive wheel
62: Steering wheel 62a:
70: main orbit portion
80: fourth cylinder 81: fourth cylinder rod
90: a first subordinate orbital section
110: fifth cylinder 111: fifth cylinder rod
120: a second subordinate orbital section

Claims (9)

A frame 10 of polygonal shape;
A control unit (30) disposed behind the frame (10) and controlling power supplied from the power supply member, the power supply member including a drive motor driven by power supplied from the power supply member;
A handle 40 rotatably mounted on the upper portion of the controller 30;
A foot part (50) coupled to the rear of the frame (10); And
A driving wheel 61 coupled to a rear lower surface of the frame 10 and driven by the driving motor and a steering wheel 60 coupled to a front lower surface of the frame 10 and rotated by the steering wheel 40 62;
Lt; / RTI >
A side wall 11 is coupled to the frame 10 along a circumference of the frame 10 so that a space 11a is formed on the frame 10 and a front side and a rear side of the side wall The side walls 11 provided on both sides are configured to be rotatable,
A first sprocket 41 is coupled to the lower portion of the handle 40 to rotate together with the rotation of the handle 40. The steering wheel 62 is coupled to a wheel axis 62a of the steering wheel 62, And a chain 43 for connecting the first sprocket 41 and the second sprocket 42 to the lower portion of the frame 10 is coupled with the second sprocket 42 rotated together with the wheel axle 62a Respectively,
The frame 10 is provided with a first cylinder 12 and a second cylinder 13 which are rotatably coupled to the center and are directed toward the front and rear of the frame 10, The first cylinder rod 12a and the second cylinder rod 13a which are pulled out or drawn in by the hydraulic pressure in the state of being inserted into the cylinder 12 or the second cylinder 13 and the front side of the lower face are connected to the first cylinder rod 12a And a swash plate (14) rotatably connected to the second cylinder rod (13a) at the rear of the lower surface,
The first cylinder 12 and the second cylinder 13 are separately controlled in accordance with the inclination of the moving section so that the first cylinder rod 12a is pulled in and out and the second cylinder rod 13a is pulled in and pulled out, So that the swash plate 14 is tilted forward or backward,
The frame 10 includes a proximity sensor 18 provided at the front thereof for sensing the approach of an object and a speaker 30 for emitting an alarm when an object is detected by the proximity sensor 18. [ 32). ≪ / RTI >
The method according to claim 1,
The footrest (50)
Wherein a part of the footrest part (50) is inserted into the insertion groove (31) of the control part (30) when it is rotated in an upward direction, cart.
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