KR20230000863U - Conveyance cart - Google Patents

Abstract

The present invention relates to an article transport device. An article carrying device according to the present invention includes a movable supporting unit provided with wheels and configured to be movable; a plate disposed above the movable support at a predetermined interval and on which an object is placed; It is characterized in that it comprises a collapsible lifting means for interconnecting the upper surface of the movable supporting part and the lower surface of the plate, and lifting or lowering the plate based on the movable supporting part.

Description

Goods transport device {CONVEYANCE CART}

The present invention relates to an article carrying device, and more particularly, to an article carrying device configured to change its height according to the size of an article.

[Background Art] There are various types of article transport devices that move articles from one place to another.

It includes not only manual carts that allow people to simply carry items, but also robots that automatically move predetermined items to other places.

In particular, robots currently applied/used for delivery are mainly used in restaurants, and the top plate (plate) on which the goods are placed is fixed.

In addition, the product transport device may be used for loading and unloading a courier service, and the product transport device currently used for loading and unloading a courier service also has a structure in which a top plate is fixed.

With such a fixed top plate (plate), it is not efficient to transport articles of various sizes (volumes).

For example, when a top plate is composed of several layers, if the distance between the top plates is fixed, the height of an item placed on the middle top plate is limited by the distance between the top plates. Even when moving, since the distance between the top plates is fixed, it is not preferable in terms of space utilization efficiency.

In addition, in the prior art, even when an article transport device is configured in the form of an automatic robot, it is possible to move to a specific place, but putting the article down at that specific place requires a person to manually proceed or requires a separate automation device provided at the specific place. There is a problem that needs to be done by

Registered Patent No. 10-1738134

The present invention was made to solve the above conventional problems, and its purpose is to change the height of the top plate (plate) arrangement according to the size of the goods to be transported, and to automatically move (get off) the goods at the transportation site. It is to provide an article transport device comprising a structure in which there is.

In order to achieve the above object, an article carrying device according to the present invention includes a movable supporting unit equipped with wheels and configured to be movable; a plate disposed above the movable support at a predetermined interval and on which an object is placed; An upper surface of the movable supporting part and a lower surface of the plate are connected to each other, and a collapsible lifting means for lifting or lowering the plate based on the movable supporting part may be included.

Here, the collapsible lifting means includes a plurality of X-shaped cross guides respectively contacting the left and right upper surfaces of the movable support unit and the left and right lower surfaces of the plate; a screw connected to at least one end of the X-shaped cross guide; A motor coupled to the screw and moving at least one end of the X-shaped cross guide in a forward and backward direction when the screw is rotated forward and backward while the corresponding X-shaped cross guide is folded or unfolded to each other so that the plate elevates and descends may be included.

Here, each of the X-shaped cross guides may include at least one link for lifting and lowering the plate by fixing one side and moving the other side.

Here, a first guide rail and a second guide rail formed in the longitudinal direction are mounted on the upper surface of the movable supporting part and the lower surface of the plate, respectively, and each of the X-shaped cross guides has one end of the first guide rail or It is seated on the second guide rail and moved, and the other end is fixed to the upper surface of the movable support or the lower surface of the plate by a fixed shaft, and consists of two link arms intersecting and hinged to each other, and one side of the screw may be respectively connected to portions of the two link arms seated in the first guide rail and the second guide rail.

Here, the plate, both sides of the frame; a plurality of rollers connecting between the frames on both sides and rotating about their own central axis; A transfer belt surrounding the plurality of rollers may be included.

Here, a motor unit for rotating at least one of the plurality of rollers is provided inside at least one of the frames on both sides, and at least one of the plurality of rollers connected to the motor unit is in contact with the inner surface of the conveying belt. It may be configured to transmit the rotational force of the motor in.

Here, two X-shaped cross guides may be provided on the left and right front and rear sides of the plate so that inclination occurs due to a difference in height adjustment between the front and rear sides of the plate.

As described above, according to the present invention, the product transport device is configured to include a plurality of collapsible lifting means, so that the height between each floor can be adjusted according to circumstances.

In particular, by adding a structure for transporting the article to the plate on which the article is placed, the article can be put down without manual labor after the article is transported.

In this case, by adjusting the inclination of the plate, damage to the article can be minimized when the article is unloaded.

In addition, the collapsible lifting means supporting the plate is not configured to be connected to each floor, but is connected to the plate of each floor starting from the bottom, so that the storage height is minimized when all the collapsible lifting means are folded to the maximum. can make it

1 is a perspective view of an article transport device according to an embodiment of the present invention;
2 is an exploded perspective view of the plate of FIG. 1;
Figure 3 is a left side view of Figure 1,
4 is a view showing a state in which the folding type lift is folded in the state of FIG. 3;
5 is a perspective view of an article transport device according to another embodiment of the present invention;
Figure 6 is a left side view of Figure 5,
7 is a view showing a state in which all collapsible lifting means are folded in the state of FIG. 6;
8 and 9 are views showing a state in which some collapsible lifting means are folded in the state of FIG. 6,
10 is a view showing an example of a plate structure of the movable support unit of FIG. 1;
11 is a left cross-sectional view of the plate of FIG. 10;
12 is a view showing a state in which a conveyance belt wraps around the roller of the plate of FIG. 10;
13 is a left side view of an article transport device according to another embodiment of the present invention;
14 is a left side view of a state in which all the collapsible lifting means are folded in the state of FIG. 13;
15 is a front view of the state of FIG. 14;
16 and 17 are diagrams showing a state in which a plurality of foldable lifting means are provided on the left side and the right side of the product transport device, respectively, causing the plate to tilt.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, each embodiment according to the present invention is only one example to aid understanding of the present invention, and the present invention is not limited to these embodiments. In particular, the present invention may be composed of a combination of at least one or more of the individual components included in each embodiment.

The overall external shape of the product transport device according to an embodiment of the present invention is as shown in FIG.

As shown in the drawings, the article transport device 1 includes a movable supporting part 100, a collapsible lifting means 200, and a plate 300.

First of all, the movable supporting unit 100 is provided with wheels 101 so that the product transport device 1 according to the present invention can move, where the wheels may be electric wheels.

For example, a motor part (not shown) that rotates by electricity is provided inside the movable support part 100, and the wheels are combined with the motor part to rotate, so that the product carrying device 1 can be moved. there is.

In this way, when the product transport device 1 is provided in the form of an automatic robot, a separate control unit (not shown) may be provided for control. Therefore, in the following description of the present invention, the description of the function of the control unit will be omitted.

This is the same in relation to the elevation/lowering control of the collapsible elevation means 200 to be described later.

The plate 300 is an object to be transported, and is disposed above the movable supporting part 100 with a predetermined distance therebetween.

Of course, the plate 300 is not disposed directly in contact with the movable supporting part 100, but is disposed in a state connected to the collapsible lifting means 200. For various embodiments of the structure of the plate 300, the folding type lifting A description of the means 200 will be given later.

For reference, FIG. 2 is a view showing a state in which the plate 300 is separated, and FIG. 3 is a side view of the product carrying device 1 .

A first guide rail 410 and a second guide rail 420 formed in the longitudinal direction may be mounted on the upper surface of the above-described movable support unit 100 and the lower surface of the plate 300, which will be described later. As shown, it serves as a guide for the movement of the collapsible lifting means 200, and a more detailed description thereof will be described later.

The collapsible lifting means 200 interconnects the upper surface of the movable supporting part 100 and the lower surface of the plate 300, and performs a function of lifting or lowering the plate 300 based on the movable supporting part 100 do.

To this end, the collapsible lifting means 200 may include an X-shaped cross guide 210, a screw 220, and a motor unit 230.

Here, the X-shaped cross guide 210 comes into contact with the left and right upper surfaces of the movable supporting unit 100 and the left and right lower surfaces of the plate 300, respectively. An example of two formations is shown, and may include, for example, a left X-shaped cross guide disposed on the left side and a right X-shaped cross guide 210 disposed on the right side.

Looking more specifically at each of these X-shaped cross guides 210, one side is fixed and the other side is movable, so that the plate 300 may be configured to include at least one link that lifts and lowers.

Specifically, each X-shaped cross guide 210 has one end seated on the first guide rail 410 or the second guide rail 420 to move, and the other end to the upper surface of the movable supporting part 100 or plate 300 ) is fixed to the lower surface of the fixed axis, and it can be composed of two link arms that intersect and hinge.

That is, the first link arm 211 of the two link arms is configured so that one end is seated on the first guide rail 410 and moved while the other end is fixed to the lower surface of the plate 300 with a fixed shaft 214, The second link arm 212 is configured so that one end is seated on the second guide rail 420 and the other end is fixed to the upper surface of the movable support 100 with a fixed shaft 213, such a first link arm 211 and the second link arm 212 may be mutually cross-hinged 215 coupled.

Meanwhile, the screw 220 may be connected to at least one end of the X-shaped cross guide 210. Specifically, one side of the screw 220 is the first link arm 211 or the second link arm 212 described above. The first guide rail 410 or the second guide rail 420 may be connected to a portion 216 seated therein.

The motor unit 230 performs an operation of rotating the screw 220 by combining with the screw 220 .

In FIGS. 1 to 3, the motor unit 230 is illustrated as being located at the midpoint of the screw 220, but this is only an example.

As shown in the figure, the motor unit 230 is provided in the middle of the screw 220, and the screw 220 is rotated by the coupling between the motor unit 230 and the screw 220 (for example, gear coupling) Since that itself corresponds to a known technology, a detailed description thereof will be omitted.

When the motor unit 230 rotates the screw 220 forward and backward, at least one end of the X-shaped cross guide 210 moves back and forth so that the corresponding X-shaped cross guide 210 is folded or unfolded to each other so that the plate 300 moves up and down. perform the function of

That is, since the motor unit 230 is fixed to the upper surface of the movable support unit 100, the screw 220 penetrating the motor unit moves forward and backward while rotating according to the rotational motion of the motor unit 230.

This process is shown in Figure 4.

4, the screw 220 rotates forward according to the control of the forward rotation of the motor unit 230, and accordingly, the end of the screw 220 connected to the X-shaped cross guide 210 moves backward, eventually X The cross guide 210 is folded, and thus the distance between the movable support 100 and the plate 300 is reduced.

1 to 4, since the upper surface of the movable supporting part 100 can also serve as a kind of plate 300, in this case, the total number of plates 300 can be said to be two.

However, the number of these plates 300 can be further increased in a stacked manner.

FIG. 5 shows a perspective view of an example in which three full plates 300 are provided, and FIG. 6 shows a side view of FIG. 5 .

If the plates 300 provided in the drawings are referred to as the first plate 301, the second plate 302, and the third plate 303 in order from the bottom, the first plate 301 and the second plate ( 302), as well as between the second plate 302 and the third plate 303, the above-described collapsible lifting means 201 and 202 may be provided, respectively.

That is, in this case, the second plate 302 also serves as a kind of support in relation to the third plate 303 .

As such, since the folding type lifting means 200 is provided for each floor, the folding type lifting means 200 of all floors may be folded as shown in FIG. 7, or the folding type lifting means 200 for each floor as shown in FIGS. 8 and 9 Means 200 may be cut.

Of course, in the above drawings, the collapsible lifting means 200 is shown in a completely folded state, but the height of each layer (the space between the plates 301, 302, and 303) increases according to the number of rotations of the screw 220 by the motor unit. Of course, it can be determined.

Meanwhile, the plate 300 of the product transport device 1 may be configured in a plate shape on which an object can be placed, and may further include a structure for transporting the placed object.

Examples of this are shown in FIGS. 10 to 12 .

As shown in the drawings, the plate 300 may include both side frames 311 and 312, a plurality of rollers 320, and a conveying belt 330.

Both frames 311 and 312 may include a left frame 311 formed in the longitudinal direction on the left side and a right frame 312 formed in the longitudinal direction on the right side.

A plurality of rollers 320 may be disposed between the frames 311 and 312 on both sides. In this case, both ends of each roller may be disposed in a form seated inside the frames 311 and 312 on both sides, and each roller 320 ) can be rotated about their own central axis through a bearing structure (not shown) at both ends, and since the rotation of the roller itself through the bearing structure corresponds to a known technology, a detailed description thereof will be omitted.

11 is a side cross-sectional view and a front cross-sectional view of the inside of the frames 311 and 312 on both sides.

In particular, a motor unit (not shown) may be provided inside at least one of both frames 311 and 312 to rotate at least one 321 of the plurality of rollers 321 and 322. As in, when all the rollers 321 and 322 are configured in a form exposed to the outside, a belt (not shown) that allows the rest of the rollers 322 to rotate together according to the rotation of a specific roller 321 is provided on both sides of the frame ( 311, 312) can be connected internally. Since the structure itself in which the roller rotates according to the operation of the motor unit corresponds to a known technique, a detailed description thereof will be omitted.

The conveying belt 330 surrounds the plurality of rollers 320 and performs a function of conveying an article placed thereon.

That is, as shown in FIG. 12 , the transport belt 330 may be provided in the form of wrapping a plurality of rollers 320 between the frames 311 and 312 on both sides, and its inner surface is aligned with at least one of the rollers 321. can be reached

Accordingly, when the roller 321 connected to the motor unit among the plurality of rollers 320 rotates, the conveying belt 330 in contact with it rotates, and eventually the upper surface of the conveying belt 330 moves back and forth to convey the article. do.

As described above, when a separate controller (not shown) is provided in the product transport device 1, when the product arrives at a transport point in a state where an object is placed on the plate 300, both frames 311, 312), when the rotation of the motor unit is made, the transfer belt 330 moves and the object drops down.

That is, the product can be unloaded without manual manipulation by a person.

On the other hand, in the above-described embodiment, when the plate 300 is composed of three pieces, the folding type lifting means 200 is disposed between each plate 300 to connect each plate 300 as an example, but the folding type One side of the lifting means 200 may all come into contact with the first plate 301 .

Examples of this are shown in FIGS. 13 to 15 .

As shown in the drawings, the opposite end of the X-shaped cross guide 201' supporting the second plate 302' is also in contact with the upper surface of the first plate 301, and the third plate 303 The opposite end of the supporting X-shaped cross guide 202' also abuts on the upper surface of the first plate 301.

In this case, when all the X-shaped cross guides 201' and 202' are folded, they are completely overlapped as shown in FIG. 14 . In particular, in FIG. 14, by having a structure such that the second plate 302 is inserted into the lower surface of the third plate 303, it can be seen that in the folded state, the second plate 302 itself is overlapped to the extent that it is not visible from the outside. can

Fig. 15 is a front view of the state of Fig. 14;

In addition, in the above-described embodiment, the X-shaped cross guide 210 is composed of one left side and one right side for each layer as an example, but it may be configured with two pieces on the left front and back and two on the right side and front and back for each layer.

In particular, in the previous embodiment, an example was that the X-shaped cross guide 210 was fixed/movably connected to the lower surface of the plate 300 directly in a state of crossing once, but in this case, when a plurality of guides are provided on the left/right side, through a hinge Additional link arms 203 are connected, and each of these additional link arms 203 may be configured to meet at a point 204 on the lower surface of the plate 300 .

In this case, when the height of the X-shaped cross guide 210 located at the front and the height of the X-shaped cross guide 210 located at the rear are different, the effect of substantially inclining the plate 300 can be exhibited.

16 and 17 show the left side of the product carrying device 1, Fig. 16 shows an example of tilting backward, and Figure 17 shows an example of tilting forward.

In the drawings, the ends of the X-shaped cross guide connected to the first plate 301" are all movable, so both sides of the X-shaped cross guide are rotated according to the rotation of the screw 220 according to the operation of the motor unit 230. The lower ends are designed to move at the same time, in particular, the lower ends of both sides of the incense can move closer or farther from each other. Since the structure itself in which both sides move closer or farther apart according to the operation of the motor corresponds to a known technology, more detailed description is omitted.

Accordingly, the vertical height of the entire X-shaped cross guide equipped with the additional link arm 203 can be changed, and as described above, according to the independent control of the motors connected to the front X-shaped cross guide and the rear X-shaped cross guide, The second plate 302" is inclined in the front or rear direction.

The present invention is not limited to the specific embodiments described above, but can be implemented by various modifications and variations within the scope of the present invention. It will be apparent that such variations and modifications are included in the present invention provided they fall within the scope of the appended claims.

Reference Numerals 1: goods carrying device 100: movable support
200: collapsible lifting means 300: plate

Claims (7)

A movable support unit equipped with wheels and configured to be movable;
a plate disposed above the movable support at a predetermined interval and on which an object is placed;
and a collapsible lifting means for interconnecting an upper surface of the movable supporting part and a lower surface of the plate and elevating or lowering the plate based on the movable supporting part. According to claim 1,
The collapsible lifting means,
a plurality of X-shaped cross guides respectively contacting the left and right upper surfaces of the movable supporting unit and the left and right lower surfaces of the plate;
a screw connected to at least one end of the X-shaped cross guide;
It is coupled to the screw and when the screw is rotated forward and backward, at least one end of the X-shaped cross guide moves in the forward and backward directions while the corresponding X-shaped cross guide is folded or unfolded to each other, characterized in that it includes a motor unit so that the plate rises and falls goods carrying device. According to claim 2,
Each of the X-shaped cross guides,
The article transport device comprising at least one link for lifting and lowering the plate by fixing one side and moving the other side. According to claim 3,
A first guide rail and a second guide rail formed in the longitudinal direction are mounted on the upper surface of the movable supporting part and the lower surface of the plate, respectively,
Each of the X-shaped cross guides has one end seated on the first guide rail or the second guide rail and the other end fixed to the upper surface of the movable support or the lower surface of the plate by a fixed axis. Consisting of two link arms cross-hinged,
One side of the screw is connected to a portion seated in the first guide rail and the second guide rail of the two link arms, respectively. According to claim 1,
The plate is
both sides of the frame;
a plurality of rollers connecting between the frames on both sides and rotating about their own central axis;
An article conveying device comprising a conveying belt surrounding the plurality of rollers. According to claim 5,
A motor unit for rotating at least one of the plurality of rollers is provided inside at least one of the frames on both sides,
At least one of the plurality of rollers connected to the motor part is configured to transmit the rotational force of the motor in a state of contact with the inner surface of the conveying belt. According to claim 3,
The X-shaped crossing guides are provided on the left and right front and rear sides, respectively, so that inclination occurs due to a difference in height adjustment between the front and rear portions of the plate.

Images