KR20180000930A - Moving cart capable of getting on and off for steps - Google Patents

Abstract

The present invention relates to a transfer cart, which is able to move up and down along stairs, and more specifically, to a transfer cart, which is able to easily move up and down along stairs while considering the structural characteristic of the stairs and is provided with a braking function when moving up along the stairs and moves on the ground to improve functionality and product competitiveness and prevent an accident occurring to a user. According to the present invention, the transfer cart comprises: a loading member allowing a carried article to be loaded thereon; a handle frame positioned on one end of the loading member; a plurality of caster members positioned on the lower side of the loading member; and a stairs elevation means positioned on one end of the loading member and configured to allow the transfer cart to move up and down along the stairs. The stairs elevation means is configured in a caterpillar type.

Description

[0001] MOVING CART CAPABLE OF GETTING ON AND OFF FOR STEPS [0002]

More particularly, the present invention relates to a transportation vehicle capable of raising and lowering a staircase, more specifically, a staircase can be easily raised and lowered in consideration of a structural characteristic of the staircase, Which can improve the product's competitiveness and prevent user's safety accidents.

Generally, a bogie refers to a pedestal attached to a wheel for carrying and moving a luggage, and has a handle used for carrying a package, while a small bogie is made of a steel structure It refers to the heavy load for the use such as moving the iron with the cast iron for steelworks.

In such industrial trucks where production and production are carried out or in warehouses of a logistics center, where the industrial goods and the transportation of the goods are large, the operator does not directly carry and transport the transported goods in small quantities, Is transported and transported on a transport truck in order to easily and safely transport the goods of the transport truck or transport truck, and is referred to as a transport truck or a transport truck and is collectively referred to as a truck.

As described above, the bogie plays a very important role in transporting the conveyed article from one place to another. The conventional structure of such a bogie includes a plate having a predetermined area, a frame supporting the plate, and a frame And when the number is the same, a handle is further included.

However, existing transportation vehicles are very difficult to climb up and down the stairs, and there is a problem that excessive power of the user is required.

As a countermeasure thereto, a bogie capable of moving in steps as shown in Fig. 1 has been proposed. 1 is a perspective view showing a carriage which can be moved in a stepwise manner according to the prior art.

Conventionally, as shown in Fig. 1, a transportation car which can climb or descend a staircase is constructed by mounting a stair wheel (three wheels) on the rear side of the handle. Conventionally, such a carrier truck is applied to a carrier truck which is relatively small in which the transported article can be loaded and which is used by stacking a plurality of transported articles in the vertical direction.

However, the conventional stair carrier truck uses a wheel size of at least 100 mm and a maximum of 150 mm in order to lower a step of a car, and when it is more than that, the load of loading the cargo is increased, . 3 is an explanatory view for explaining a problem of a conventional stair carrier.

The conventional stair cargo carriage has to be higher than the stairs so that the wheels can move over the stairs. In Korea, since the stairs are less than 20cm in most cases, the radius of the wheels must be at least 20cm, You will not be able to load it.

Also, the conventional structure having three wheels used in the stair carrier truck can not be applied to a carrier truck that can carry a lot of loads as shown in Fig. 2 is a perspective view showing a general transportation car.

On the other hand, there is a problem that the weight of a conventional truck is heavy, and a person may come in due to the weight of the product on a downhill road, causing a serious accident.

(Document 1) Korean Utility Model Publication No. 20-1998-016230 (Jun. 25, 1998) (Document 2) Korean Utility Model Publication No. 20-1996-017258 (Jun. 17, 1996)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a staircase structure capable of easily ascending and descending a staircase, Which can be applied to a wide-width transport vehicle capable of elevating the stairs.

In addition, the present invention provides a straddle-type transport vehicle capable of enhancing functionality, securing product competitiveness, and preventing a user's safety accident by providing a braking function during a ground movement such as a downhill and a downhill There is another purpose.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an apparatus and method for controlling the same.

According to an aspect of the present invention for achieving the objects and other features of the present invention, a loading member on which a carrying article is loaded; A handle frame provided at one end of the loading member; A plurality of caster members provided below the stacking members; And a stair-climbing means provided at one end of the stacking member and capable of raising and lowering a transporting truck at a stairway, wherein the stair-climbing and descending means is a caterpillar-type staircase- / RTI >

In the present invention, the stair-climbing means includes an extending frame fixed to one side of each of both ends of one end of the stacking member; An arc-shaped frame having one end fixed to the extension frame and the other end extending toward the rear side of the handlebar frame; A plurality of rolling wheels provided at intervals in the arc-shaped frame and rotatably installed; A caterpillar member surrounding the plurality of rolling wheels; And a tension wheel rotatably installed on the stacking member and contacting the outside of the caterpillar member, the extension frame extending vertically from a lower surface of the stacking member and being integrally formed with the arc-shaped frame.

In the present invention, the arc-shaped frame is provided with a rear side castor member positioned at one end of the arc-shaped frame side, and the caterpillar member surrounds the plurality of rolling wheels and the rear side castor member to form an endless track, A wheel provided on the other end side of the plurality of rolling wheels and the rear side castor member may be formed in a pulley shape.

The braking device according to the present invention may further include a braking device configured to braking the transportation bogie, wherein one end of the braking device is rotatably provided on the extension frame and a brake friction pad is provided on the other end, A brake member which is installed to face each other; A brake operation lever provided on one side of the pull frame to operate the brake member; A brake cable for connecting the brake operation lever and the brake member; And a restoring spring for returning the brake member and the brake operation lever.

In the present invention, one end may be fixed to at least one of the stacking member and the handle frame, and the other end may further include at least one supporting member fixed to the arc-shaped frame.

According to the present invention, the stairs can be easily elevated and lowered by the optimum design for ascending and descending movement of the stairs in consideration of the stair shape, and a wide-width transportation There is an effect that can be applied to bogies.

In addition, the present invention provides a braking function during ground movements such as downhill and downhill to enhance functionality, ensure product competitiveness, and prevent user safety accidents.

The effects of the present invention are not limited to those mentioned above, and other solutions not mentioned may be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a carriage which can be moved in a stepwise manner according to the prior art.
2 is a perspective view showing a general transportation car.
3 is an explanatory view for explaining a problem of a conventional stair carrier.
Fig. 4 is a side view showing the construction of a step-and-lifting carriage according to the present invention.
5 is an enlarged view showing a main constituent part of a step-liftable carriage according to the present invention.
6 is a view showing a part of the structure of a brake means constituting a carriage which can be stepped up and down according to the present invention.

Further objects, features and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

Before describing the present invention in detail, it is to be understood that the present invention is capable of various modifications and various embodiments, and the examples described below and illustrated in the drawings are intended to limit the invention to specific embodiments It is to be understood that the invention 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 this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms " part, "" unit," " module, "and the like, which are described in the specification, refer to a unit for processing at least one function or operation, Software. ≪ / RTI >

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

4 to 6, a description will be made of a step-up / down carriage according to a preferred embodiment of the present invention.

FIG. 4 is a side view showing the construction of a step-and-lifting carriage according to the present invention, FIG. 5 is an enlarged view showing a main constituent part of a step- Fig. 7 is a view showing a part of the structure of the brake means constituting the transportation vehicle.

As shown in FIGS. 4 to 6, the loading and unloading carriage according to the present invention includes a loading member 100 having a predetermined area and loaded with a carrying article; A handle frame (200) provided upright on one end of the loading member (100); A caster member (300) provided below the loading member (100) for moving the loading member in a forward direction and rotatable manner; And a stair-climbing means (400) provided at one end of the stacking member (100) so as to move the staircase up and down.

The loading member 100 may be formed in a plate shape or a frame shape having a predetermined area. The loading member 100 may be made of steel or plastic, but it is made of a suitable material according to the use purpose. It is preferable that the loading member 100 is made of high-strength plastic to have a rigid rigidity and to reduce the weight of the loading and unloading vehicle.

Next, the handle frame 200 is not particularly limited as long as the handle frame can be easily grasped and carried, and a normal configuration and configuration can be employed. For example, a frame member of an inverted "U-shape " in which both ends are coupled to both sides of one end of the stacking member 100. [

Here, the handle frame 200 is configured to be foldable in order to facilitate the transportation of the storage and transportation carriage itself, and is provided with fixing means for stably fixing the storage frame 200 when it is used.

The fastening means of the pull frame and the castor member 300 may be of any known type. For the sake of simplicity and clarity of the present invention, the fastening means of the pull frame and the castor member 300 will not be described in detail.

Next, the stair-climbing means 400 includes an extending frame 410 fixed to one side of each end of one end of the stacking member 100; An arc-shaped frame 420 having one end fixed to the extension frame 410 and the other end extending to the rear side of the knob frame 200; A plurality of rolling wheels 430 provided at predetermined intervals in the arc-shaped frame 420 and rotatably installed; A caterpillar member (440) surrounding the plurality of rolling wheels (430); And a tension wheel 450 rotatably mounted on the loading member 100 and contacting the outside of the caterpillar member 440.

The extension frame 410 extends vertically from the lower surface of the loading member 100 and is formed integrally with the arc-shaped frame 420.

The crawler frame 440 is provided with a plurality of rolling wheels 430 and a rear side castor member 310. The crawler frame 440 includes a plurality of rolling wheels 430, To form an infinite orbit.

The wheels provided at the ends of the rolling wheels 430 are pulley-shaped, and the rear-side casters 310 are also pulley-shaped to prevent the caterpillar member 400 from being detached.

The arcuate frame 420 includes a plurality of rolling wheels 430 which are disposed under the center line C with respect to a virtual line center line C passing through the lateral center of the loading member 100, The angle between the tangent line at the outer contact surface of the wheel 430 and the center line C becomes 30 degrees or more and less than 45 degrees and the tangent line at the outer contact surface of the rolling wheel 430 provided on the center line C and the center line C ) Is formed to be rounded so as to be 45 degrees or more and 90 degrees or less.

At this time, the angle formed between the tangent line at the outer contact surface of the rolling wheel 430 and the center line C provided below the center line C is gradually decreased toward the downward direction, and the rolling wheel The angle formed by the tangent line and the center line C on the outer contact surface of the contact surfaces 430 and 430 is increased.

Further, the step-liftable carriage of the present invention further includes braking means configured to brake the carriage.

The braking means includes a brake member 510, one end of which is rotatably provided on the extension frame 410, the other end of which is provided with a brake friction pad and is opposite to the castor member 300; A brake operation lever 520 provided at one side of the knob frame 200 to operate the brake member 510; A brake cable 530 connecting the brake operation lever 520 and the brake member 510; And a restoring spring (not shown) for returning the brake member 510 and the brake operating lever 520 back to their original positions.

Although the brake operation lever 520 is shown extending to the upper side of the knob frame 200 in the drawing, it is preferable that the brake operation lever 520 is provided on the lower surface of the upper side of the knob frame so that the brake operation lever 520 can be operated together with the knob frame.

The step-up and step-down transporting carriage of the present invention can be moved down safely by descending the stairs downward or down the stairs by operating the braking means.

The straddle-type elevating carriage according to the present invention has one end fixed to the stacking member 100 and / or the handle frame 200 and the other end fixed to the arc-shaped frame 420, (Not shown).

Here, it is preferable that the support member is connected to the other end of the arc-shaped frame 420 (i.e., the end on the side opposite to the end where the castor member 310 is provided), and the support member is operated hydraulically And a damping member capable of absorbing an external shock.

The cradle-type lifting and lowering carriage according to the present invention is constituted by a cradle-type step-up and elevation means, so that the caster member 310 and the rolling wheels 420 installed on the arc-shaped frame 420 and the caterpillar member 440) can be easily moved up and down by providing a configuration such as that shown in Figure 4 with a large wheel of radius W. [

According to the present invention, it is possible to easily ascend and descend the stairs through the optimum design for the ascending and descending movements of the stairs in consideration of the stepped shape, and the wide width There is an advantage that it can be applied to a cargo truck.

In addition, according to the present invention, there is an advantage that a braking function is provided for ground movement such as a step down and a downward road to improve functionality, ensure product competitiveness, and prevent a user's safety accident.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not for purposes of limiting the technical idea of the present invention, but rather are not intended to limit the scope of the technical idea of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100:
200: handle frame
300: Scatter member
310: rear side scatter member
400: Stair elevating means
410: Extension frame
420: arched frame
430: rolling wheels
440: caterpillar member
450: Tension wheel
510: Brake member
520: Brake operation lever
530: Brake cable
C: virtual line center line of the loading member

Claims (5)

In the transport vehicle,
A loading member on which the carrying article is loaded;
A handle frame provided at one end of the loading member;
A plurality of caster members provided below the stacking members; And
And a step elevating means provided at one end side of the stacking member so as to be able to ascend and descend a transporting truck at a step,
The stair-climbing means comprises a caterpillar type
Stairway liftable carriage.
The method according to claim 1,
The step-up /
An extension frame fixed to one side of each of both ends of one end of the stacking member;
An arc-shaped frame having one end fixed to the extension frame and the other end extending toward the rear side of the handlebar frame;
A plurality of rolling wheels provided at intervals in the arc-shaped frame and rotatably installed;
A caterpillar member surrounding the plurality of rolling wheels; And
And a tension wheel rotatably mounted on the stacking member and contacting the outside of the caterpillar,
The extension frame extends vertically on the lower surface of the stacking member, and is integrally formed with the arc-shaped frame
Stairway liftable carriage.
The method of claim 2,
Wherein the arc-shaped frame is provided at one end thereof with a rear side castor member positioned on the side of the handle frame,
Wherein the caterpillar member surrounds the plurality of rolling wheels and the rear side castor member to form an endless track,
A wheel provided on the other end side of the plurality of rolling wheels and the rear side castor member are formed in a pulley shape
Stairway liftable carriage.
The method of claim 2,
Further comprising braking means configured to brak the transportation bogie,
The braking means
A brake member, one end of which is rotatably provided on the extension frame, and the other end of which is provided with a brake friction pad, so as to face the castor member;
A brake operation lever provided on one side of the pull frame to operate the brake member;
A brake cable for connecting the brake operation lever and the brake member; And
And a restoring spring for returning the brake member and the brake operating lever
Stairway liftable carriage.
The method of claim 2,
Wherein one end portion is fixed to at least one of the stacking member and the handle frame and the other end portion further comprises at least one support member fixed to the arc-
Stairway liftable carriage.

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