KR101923961B1 - A convey for Brick transportation - Google Patents

Abstract

The present invention relates to a cart to carry bricks and, more specifically, to a cart to carry bricks, which easily loads a brick unit body loaded on a panel (pallet) thereon with small force to transfer a unit body of bricks to an unloading place without repetitively moving and loading a few of bricks on the cart by a worker when the bricks transferred by a truck and loaded by a plurality of layers are moved to each workplace in a work site, such as construction, and the like. More specifically, since a jack disposed on a lower part is used, the center of gravity of the loaded bricks is easily moved to a cart side, such that the bricks are loaded on the cart and the cart is moved without damaging a loaded state of the bricks. Also, the bricks are unloaded without changing the arranged state of the bricks during unloading. Accordingly, labor and working hours of a worker are reduced, and safety transfer is ensured while preventing damage to the bricks. According to the present invention, the cart to carry bricks comprises a main body, a wheel member, the jack, and a coupling means.

Description

A convey for Brick transportation}

More particularly, the present invention relates to a hand cart for brick transportation, and more particularly, to a brick carrying cart, in which a plurality of bricks are repeatedly carried to a handcart in a process of moving bricks loaded in a multi- The brick unit loaded on the panel (pallet) can be easily transferred and moved to the unloading place with a small force. In particular, the center of gravity of the loaded brick can be easily moved to the hand side by using a jack formed at the bottom It can be mounted on a handcart without being damaged and can be unloaded as it is arranged in a brick, so that it is possible to reduce labor and work hours of a worker and to ensure stable movement while preventing breakage of a brick To an improved type brick transport cart.

In the case of a brick used in a construction site such as a construction site, first, the brick unit mounted on the upper surface of the panel (pallet) is transported to a designated location in the construction site through a transportation vehicle. Then, Several pieces are repeatedly carried to the handcarts, and then they are transported to each workshop using a cart. At this time, when the bricks are carried to the respective workplaces using the carts, the workload and the working time are excessively consumed in the process of the bricks, and when the bricks loaded in each workshop are loaded and unloaded, So that the work is hindered. In addition, heavy loads were required during the unloading of the bricks, and injuries to workers were frequent.

In order to solve the above problem, a method has been recently employed in which a brick is attached to an existing brick-cargo carton at the front to close the brick when the brick is transported, and a brick is opened when the brick is unloaded .

As an example of this, Korean Patent Registration No. 1350243 ("a brass carriage cart") is disclosed. As shown in Fig. 1, the above-mentioned method includes a pair of bottom frames 21 and 25 which are located at the lower portion of the brick support region and are opened and closed, a rotation transmitting the power for opening the bottom frames 21 and 25 to both sides, A projecting piece 41 for forming a space below the side plate 3 so that the bottom frames 21 and 25 can be rotated and opened and a projecting piece 41 for forming a space below the side frames 3 and the bottom frames 21 and 25, And a rotation center shaft 51 or 55 for rotatably fixing the rotation center shaft. That is, the brick support region is opened and closed by using the first frame 21 and the second frame 25 located on both sides of the bottom surface, and the bottom frames 21 and 25 are provided with respective rotation center axes 51, 55).

In order to rotate the opening and closing part around the rotating shaft, the conventional brick-carving cart must be attached to one side of the side of the opening and closing part and coupled to the body of the cart at the other end. Therefore, a separate hinge shaft for coupling with the body of the handcart is required, so that it takes a long time to apply the device to the existing handcart.

Further, since the frames are coupled by the hinges, pressure due to the step difference can be generated. As a result, a lot of stress is applied to the lower portion of the brick pile, causing the brick to break.

In addition, since the worker has to repeatedly transfer several bricks to the cart manually, it takes a lot of labor and work time for the worker.

Japanese Patent No. 1439869 ("brick carriage cart") discloses a carton having a main body portion 10 having a loading space 11 in which at least three surfaces 12, 13 and 14 are opened, A pair of support portions 20a and 20b rotatably installed on both sides of the opened first surface 12 of the main body portion 10 so as to be rotatable and facing each other and capable of supporting the bricks, And an operating portion (30) for rotating the pair of receiving portions (20a, 20b) at the same time.

However, in order to transport the bricks to the designated position in the construction site, the brick carrying wagon having the above-described structure must be manually transferred to the hand cart by repeatedly several pieces of bricks, so that the worker's workload and work time are excessively generated And there is a possibility that the bricks unloaded from the carts may be broken even when the bricks loaded from the carts are put down, and the problem that the worker has a lot of power has continued to occur.

Registration Utility Model Bulletin No. 20-0484400 (Registered on Aug. 28, 2017) "Link-type brick carriage cart" Registered Patent Bulletin 10-1701353 (Registered on Jan. 24, 2017) "Brick Carriers" Registered Patent Publication No. 10-1439869 (Registered on September 03, 2014) "Brick Carriage" Registered Utility Model Bulletin No. 20-0474919 (Registered on October 16, 2014) "Automatic loading and unloading cart for brick transportation" Published Japanese Patent Application No. 10-2013-0132345 (Published on Dec. 04, 2013) "Footed brick carts" Patent Registration No. 10-1539299 (Registered Date: July 20, 2015) "Electric cart" Registration No. 10-1307653 (Registered on Sep. 05, 2013) "Brick hand cart with tension control function"

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a pallet in which a plurality of bricks are closely attached to the upper surface of a panel (pallet) The pallet can be easily tilted by about 45 degrees to move the center of gravity of the panel (pallet) to the side of the hand barrel so that the small It is possible to easily and stably carry and load or unload a brick loaded with force without deformation of the loading form so as to maintain the shape of the brick when the brick is moved up and down while preventing breakage of the brick, Thereby improving the space utilization and workability of the bricks And to provide a cart for transportation.

In addition, when bricks are loaded so as to be partially movable even when a large amount of bricks are loaded on a panel (pallet), and when the barrel is erected upright, the barrel can be moved backward, (Pallet), the wheel of the cart is prevented from touching or being caught by a panel (pallet) or other stack of bricks, so that the brick can be smoothly carried in the cart, There is a cart to offer.

It is an object of the present invention to provide an apparatus and method for connecting a first frame (12) and a second frame (13) integrally connected by a plurality of connecting bars (11) (10) having a bottom plate (14) having a receiving groove (17) in a part thereof and a knob (15) formed by bending the first frame (12) and the second frame (13) on an upper part thereof;

A pair of connection arms 21 to which one side is rotatably connected to the connection bar 11 and a rotation shaft 22 is rotatably connected to the other side and a pair of wheels 21 to be assembled on both sides of the rotation axis 22, A wheel member 20 constituted by a plurality of gears 23;

A jack 30 on which a body 31 is seated in a receiving groove 17 of the body 10 and a lever 32 is connected to one side;

A connecting plate 42 rotatably connected to one side of the first frame 12 and the second frame 13 and having a latching ring 41 at the other side thereof, And a fastening means (40) constituted by a fastening means (211).

Further comprising a pressure plate (50) formed in the body (10) so as to be vertically movable so as to press the upper portion of the brick unit mounted on the handcart so as to prevent the breakage or the load of the brick from being deformed during movement,

The pressure plate 50 includes a fixing plate 111 fixed to the connection bar 11 and a fixing plate 111 having a cross section and having one side enclosing a part of the first frame 12 and the second frame 13 And the center portion of the cylinder 51 is connected to the cylinder 51 installed on the fixing plate 111 so that the pressing plate 50 is moved up and down by the driving of the cylinder 51. [

The first and second frames 12 and 13 may further include auxiliary wheels 16 installed at the lower ends of the first frame 12 and the second frame 13 so as to be able to carry the stacked brick unit bodies, .

The fastening means 40 further includes through holes 121 and 212 passing through the first frame 12 and the connecting arm 21 and a fastening pin 43 fitted into the through holes 121 and 212 .

And a bearing is further provided at a connecting portion between the connecting bar 11 and the rotating shaft 22 connected to both ends of the connecting arm 21 so that smooth rotation is maintained.

As described above, the brick-cargo cart according to the present invention can minimize the labor of the worker (worker) and shorten the work time required for brick transportation, so that it is possible to carry a large amount of bricks.

In addition, in the process of moving the bricks loaded on the panel (pallet), by using a jack mounted on the cart, the brick can be easily moved to the side of the hand side by tilting the barrel about 45 degrees toward the cart, , The bricks are loaded and unloaded in a state where they are loaded, thereby preventing breakage of the bricks and increasing the space utilization and workability when the bricks are taken off.

In addition, since the removed bricks are protected by the pressing plate formed on the upper part of the hand cart during the movement process without being damaged, damage or damage to the bricks in the moving state can be prevented.

In addition, in the process of inserting the bottom (bottom plate) of the hand cart into the panel (pallet) on which the brick is loaded, the wheels of the hand cart rotate to the outside (rear side) to move the position so that the wheels do not touch It is possible to stably bring the carts into close contact with the brick side, and thereafter, the wheels are returned to their original positions, thereby effectively and stably moving the bricks to and from the carts.

In addition, the hand cart has a structure in which the operation process can be easily applied to a normal driving system using a motor and an engine, so that the hand cart can be variously modified by manual operation or automatic operation using a motor and a small engine There is an effect.

1 is a perspective view of a cart for carrying bricks according to the present invention;
2 is a side cross-sectional view of the brick carry cart according to the present invention;
FIG. 3 is a perspective view of a hand-held brick for transporting bricks according to the present invention,
4 is a side cross-sectional view illustrating the operation of the pressure plate portion of the cart for brick transportation according to the present invention.
FIG. 5 is an explanatory view showing a state of use in which a brick is partially moved by using a cart for brick transportation according to the present invention. FIG.
6 to 8 are side views showing a state in which a brick mounted on a brick handing cart according to the present invention is mounted;
9 is a perspective view of another embodiment of the brick-cargo cart according to the present invention.
Fig. 10 is a side view of another embodiment of the brick-cargo cart according to the present invention
11 to 13 are side views showing a state in which a loaded brick is mounted on another brick carrying cart according to the present invention

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

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

2 is a side cross-sectional view of a hand cart for brick transportation according to the present invention. FIG. 3 is a side view of the hand cart for carrying bricks according to the present invention. 4 is a side cross-sectional view illustrating an operation process of a pressing plate portion of a brick-carving cart according to the present invention. FIG. 5 is a side view showing a state in which a brick is partially moved using a brick- And FIGS. 6 to 8 are side views showing a state where a brick mounted on a brick-cargo cart according to the present invention is mounted.

As shown in the drawings, a brick carrying cart 100 according to the present invention includes a body 10 in the form of a frame, a pair of wheels (not shown) rotatably connected to one side of the body 10, And a jack (30) formed at a lower portion of the main body (10).

The main body 10 is formed in a substantially "b" shape, and a first frame 12 and a second frame 13 are integrally connected by a plurality of connecting bars 11, A handle 15 formed by bending the first frame 12 and the second frame 13 is integrally formed on the upper frame 14 and the upper frame.

The auxiliary wheels 16 are formed at positions corresponding to the bottom plate 14 of the first frame 12 and the second frame 13.

A receiving groove 17 is formed in the center of the bottom plate 14 to accommodate the jack 30.

The wheel member 20 includes a pair of connecting arms 21 having one side connected to the connecting bar 11 of the main body 10 and the other side rotatably connected to the rotating shaft 22, And a wheel 23 connected thereto.

In addition, a bearing (not shown) may be inserted into the connecting portion between the connecting bar 11 and the rotary shaft 22 connected to both ends of the connecting arm 21 to maintain smooth rotation.

The jack 30 is seated in such a manner that an upper portion of the body 31 is exposed in the receiving groove 17 of the bottom plate 14 and the lever 32 on the other side is protruded to one upper side of the body 10, And the body 31 is operated by the rotation of the body 32. The lever 32 can be separated or adjusted in length (stretching).

Meanwhile, the pair of connecting arms 21 rotatably connected to the main body 10 are controlled by the fastening means 40 formed on the main body 10, and the rotation range and operation thereof are controlled.

That is, the fastening means 40 includes a fastening plate 42 rotatably connected to one side of the first frame 12 and the second frame 13 and having a fastening ring 41 on the other side thereof, And a locking projection 211 formed on one side of the coupling plate 21. The coupling plate 21 is connected to the connecting bar 11 by a rotation of the rotation axis 22 in a fan shape, The engagement ring 41 of the coupling arm 21 is hooked on the engagement projection 211 of the coupling arm 21 to control the rotation of the coupling arm 21 so that the shape of the wheel 23 substantially separated from the main body 10 is maintained .

The fastening means 40 includes through holes 121 and 212 passing through the first frame 12 and the connecting arm 21 in order to firmly hold the wheel 23 in close contact with the body 10 Is inserted into the fastening pin 43 in a state in which the through holes 121 and 212 are formed so as to be positioned on the same line when the wheel 23 is in close contact with the main body 10 side, The rotation can be prevented.

3 and 4, the pressure plate 50 is vertically moved by the cylinder 51 on the upper part of the hand cart according to the present invention, so that the brick mounted on the cart can be stably transported So as to prevent the breakage of the brick or the loading state from being deformed during the movement.

That is, the pressure plate 50 has a substantially "C" shape in cross section, and both sides of the first and second frames 12 and 13 are connected to each other so as to be movable up and down while partially covering the first frame 12 and the second frame 13, 111 and connected to the cylinder 51 so that the pressure plate 50 moves up and down by driving the cylinder 51.

The cylinder 51 is installed on a fixing plate 111 fixed to the connecting bar 11 and the piston is connected to the protrusion 52 of the pressing plate 50 to move up and down, (13).

As shown in Fig. 5, the hand cart according to the invention constructed as described above can be mounted and moved as it is mounted on the brick unit member which is mounted so as to be movable in a divided manner.

Particularly, in the process of mounting the partial brick unit unit, which is separated from the brick dams which are arranged in a plurality of blocks, in a multi-stage manner, the wheel unit 20 is mounted on the main body 10 So that the bottom plate 14 of the main body 10 is prevented from being inserted into the panel (pallet) so as not to touch or catch the other brick pile on which the wheels of the handcart are mounted.

That is, due to the characteristics of the rough construction site and the considerable weight of the mounted bricks, if the wheels of the carts to carry the bricks are small, there is a considerable obstacle to transportation, so that the wheels do not protrude to the main body portion, If a small wheel is placed on the cart, the practicality is reduced. Therefore, even if the wheel size of a conventional hand cart is adopted as it is according to the present invention, since the wheel can be moved backward when the hand cart is erected uprightly, the wheels of the hand cart can be moved in the process of inserting the hand cart into the lower part of the pallet The operator does not need to carry several pieces of the bricks repeatedly to the hand cart, since they do not touch or get stuck on other stacked brick piles.

In addition, in the case of a brick to be used in a construction site such as an existing construction, first, the brick unit that is stacked on the upper surface of the panel (pallet) is transported through a transportation vehicle to a designated location in the construction site. In the case of bricks transported to a construction site by a transportation vehicle, in the case of standard size bricks, generally one panel (pallet) is used, 16 rows of five bricks are stacked on the first stage of the upper surface and five rows of 16 stacks are stacked on the layer immediately above (or below) the first stage, and 80 layers are alternately stacked alternately and repeatedly (Cement) bricks are standardized in widths of 190 mm, 90 mm and 57 mm width The. Therefore, it is not easy to divide and separate the panel (pallet) so that the gaps between the bricks are entangled in the stacked state so that they can be divided and moved.

The hand cart according to the present invention can be used for transporting various types of bricks. Unlike the conventional method of carrying bricks of a standardized size among them, as shown in the drawing, the cart can have a width of 1200 mm and a length of 1200 mm On one panel (pallet) of size, 20 blocks of 6 bricks are stacked on the first stage, and 6 blocks of 20 blocks are stacked on the top (or bottom) When stacking repeatedly in a layer range, the stacking condition is easily divided into quadrants in the form of '+' (three bricks in the lateral direction by a standardized brick size and a vertical brick Since the lengths of the ten bricks are equal to each other, it is possible to obtain a uniform brick between the bricks formed at the third brick loaded in the transverse direction and at the tenth brick loaded in the longitudinal direction , The panel (pallet) is cut into quarters so as to be able to be transported by each of the brick unit pieces divided into quadrants, so that even if each of the divided brick unit units is loaded using a hand- It is possible to easily load and carry the worker while maintaining the shape, so that labor and work time of the worker (worker) can be remarkably reduced, and the problems such as the breakage of the brick during transportation and the poor space efficiency due to the poor loading can be prevented .

Hereinafter, the operation of the cart according to the present invention will be described in detail with reference to FIGS. 6 to 8. FIG.

First, the wheel member 20 is moved backward to insert the bottom plate portion of the handcart into the brick unit 200 loaded so as to be movable in a divided manner.

More specifically, when the user pulls the rotary shaft 22 of the wheel member 20 and rotates the rotary shaft 22 in a fan shape by the connecting arm 21, the wheels 23 formed on both sides of the rotary shaft 22 are rotated 10).

Further, after the wheel member 20 is moved, the rotated state of the wheel member 20 is fixed by using the fastening means 40.

6, when the wheel member 20 is rotated, the fastening plate 42 of the fastening means 40 is rotated so that the fastening ring 41 at one side is engaged with the fastening plate 42 of the fastening means 40 211 so that the wheel member 20 is fixed.

After the wheel member 20 is positioned behind the main body 10 as described above, the main body 10 is moved to the brick unit body 200 and the bottom plate 14 is inserted into the pallet at the lower end.

The body 31 of the jack 30 formed in the receiving groove 17 of the bottom plate 14 is operated in a normal manner using one lever 32 so that the arm 33 of the body 31 The arm 33 is brought into close contact with the pallet of the brick unit body 200 and continuously elevated so that the brick unit body is tilted toward the main body 10 to move the center of gravity of the brick unit body toward the main body 10, do.

When the brick unit body 200 is mounted on the main body 10, the main body 10 rotates so that the wheel 23 is brought into close contact with the ground and is supported by the fastening plate 42 of the fastening means 40.

The auxiliary wheel 16 formed at the lower ends of the first frame 12 and the second frame 13 of the main body 10 is in close contact with the ground so that the brick unit body And can be moved in a state of being tilted on the main body 10.

When the fastening plate 42 of the fastening means 40 is removed from the connecting arm 21 with the brick unit body mounted on the main body 10 as described above, the main body 10 is lowered by the weight of the brick unit body One side of the connecting arm 21 is in close contact with one side of the first frame 12 and the second frame 13.

At this time, the rotary shaft 22 is located at the central portion of the mounted brick unit, and the user can easily place the brick unit body horizontally with the ground by pushing the knob 15.

In the course of rotating the brick unit body as described above, the pressure plate 50 formed on the upper portion of the main body 10 is driven to press the upper portion of the brick unit body by driving the cylinder 51, so that the mounted brick unit body can be stably It is possible to maintain the mounted state.

9 to 13 illustrate another embodiment of the cart according to the present invention. Specifically, a connection arm 21 connecting the main body 10 and the rotation shaft 22 is connected to a connection bar (not shown) 11 so that the wheel member 20 rotates in an annular shape with the upper side of the main body 10 as a rotation axis and is separated from the main body 10 and brought into close contact therewith.

10 is a side view of another embodiment of a brick-carving cart according to the present invention, and Figs. 11 to 13 are perspective views of a brick-carving cart according to the present invention, Fig. 7 is a side view showing a state in which the loaded bricks of another embodiment of the present invention are mounted.

A wheel 23 located at one side of the main body 10 is rotatably connected to the rotation shaft 22 and the connecting bar 11 formed on the upper portion of the main body 10 using a connecting arm 21 By controlling the rotated state of the connecting arm 21 through the fastening means 40, the brick unit body of the brick is mounted on the main body 10 by positioning the wheel 23 to the rear side of the main body 10, 10), it can be mounted stably without the lock of the wheel. After mounting, the brick unit is rotated by moving the center of gravity using the jack, and the upper part is pressed by the pressing plate to firmly maintain the stacked state There is a feature that can move safely.

The driving method of the wheel 23 and the driving method of the jack 30 are manually operated by the user. However, the driving method of the wheel 23 may be an electric type using a general electric motor, And the driving process of the jack 30 can be operated in conjunction with the driving process of the electric or engine type so that the hand cart of the present invention can be used more easily and comfortably.

Through the construction of the cart constructed as described above, the brick mounted on the pallet is tilted by about 45 degrees in the direction of the cart using a jack installed on the cart so that the center of gravity of the brick can be easily moved toward the hand side In particular, it is possible to prevent the breakage of the bricks because the bricks are loaded and unloaded, and the space utilization and workability are improved when the bricks are taken off.

In addition, since the removed bricks are protected by the pressing plate formed on the upper part of the hand cart during the movement process without being damaged, it is possible to prevent the breakage of the moving brick or the load condition from being damaged. Particularly, (Bottom plate) of the cart is inserted into the bottom of the cart, the wheel of the cart rotates outward and the position thereof is moved. Thus, the wheel strikes or gets caught in the pallet or other brick piles, And the wheel is then returned to its original position, so that the wheelbarrow can be moved efficiently and stably.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is self-evident to fall within the scope of the claims.

10: Body 11: Connection bar
111: fixed plate 12: first frame
13: second frame 14: bottom plate
15: Handle 16: Auxiliary wheels
17: receiving groove 20: wheel member
21: connecting arm 211:
212: through hole 22: rotating shaft
23: Wheel 30: Jack
31: body 32: lever
33: arm 40: fastening means
41: retaining ring 42: fastening plate
43: fastening pin 50: pressure plate
51: cylinder 52:

Claims (6)

The first frame 12 and the second frame 13 are integrally connected by a plurality of connecting bars 11 and the mounting bricks are seated on the lower part of the first frame 12 and the receiving grooves 17 are formed on the center part thereof. A main body 10 integrally formed with a bottom plate 14 having a first frame 12 and a handle 15 having a first frame 12 and a second frame 13 bent thereon;
A pair of connection arms 21 to which one side is rotatably connected to the connection bar 11 and a rotation shaft 22 is rotatably connected to the other side and a pair of wheels 21 to be assembled on both sides of the rotation axis 22, A wheel member 20 constituted by a plurality of gears 23;
A jack 30 on which a body 31 is seated in a receiving groove 17 of the body 10 and a lever 32 is connected to one side;
A connecting plate 42 rotatably connected to one side of the first frame 12 and the second frame 13 and having a latching ring 41 at the other side thereof, And a fastening means (40) composed of a fastener (211)
As the rotary shaft 22 is pulled by the wheel member 20 and the rotary shaft 22 is rotated in a fan shape by the connecting arm 21, the wheels 23 formed on both sides of the rotary shaft 22 are rotated in the fan- The clamping plate 42 of the clamping means 40 is rotated so that the clamping ring 41 on one side is caught by the clamping protrusion 211 of the coupling arm 21 and the wheel member 20 And the bottom plate (14) of the main body (10) is inserted into a lower portion of a panel (pallet) of the brick in a state where the brick unit body is fixed.
The method according to claim 1,
Further comprising a pressure plate (50) formed in the body (10) so as to be vertically movable so as to press the upper portion of the brick unit mounted on the handcart so as to prevent the breakage or the load of the brick from being deformed during movement,
The pressure plate 50 includes a fixing plate 111 fixed to the connection bar 11 and a fixing plate 111 having a cross section and having one side enclosing a part of the first frame 12 and the second frame 13 And the center portion of the barrel is connected to a cylinder (51) provided on the fixing plate (111), and the pressure plate (50) is moved up and down by driving the cylinder (51).
The method according to claim 1,
The first and second frames 12 and 13 may further include auxiliary wheels 16 installed at the lower ends of the first frame 12 and the second frame 13 so as to be able to carry the stacked brick unit bodies, Brick transport carts.
The method according to claim 1,
The fastening means 40 further includes through holes 121 and 212 passing through the first frame 12 and the connecting arm 21 and a fastening pin 43 fitted into the through holes 121 and 212 Wherein said brick-carrying cart is a brick-carrying cart.
The method according to claim 1,
Wherein a bearing is further provided at a connecting portion between the connecting bar (11) and the rotating shaft (22) connected to both ends of the connecting arm (21) so as to maintain smooth rotation.
3. The method of claim 2,
The brick unit body 200 is formed by stacking 20 blocks of six bricks on the upper surface of a panel (pallet) to form one block, and 20 blocks of bricks stacked on the upper portion or the lower portion of the block Wherein the brick is divided from a stack of bricks stacked such that the stacked structure is repeatedly formed and the stacked state is divided into four equal parts.

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