KR101712832B1 - Carriage Assembly of Mobile Rack - Google Patents

Abstract

The present invention relates to an assembled type mobile rack carriage with increased storage ability and carriage ability. The assembled type mobile rack carriage comprises a frame having a rack system provided at an upper portion thereof, and a rotation unit mounted at the frame to provide transfer performance. The frame includes a side part, a connection part, and a diagonal connection part as unit components to be assembled or disassembled to minimize a loading space for all of the components of the disassembled frame. Thus, the assembled type mobile rack carriage can increase competitiveness of product. In the assembled type mobile rack carriage with increased storage ability and carriage ability including a frame and a rotation unit included in the frame and supporting the frame to be freely transferred, the frame (100) includes: a plurality of side parts (110) provided on both sides to be separated from each other; and a connection unit (120) provided between the side parts (110) in a vertical direction and having a rectangular shape as a whole.

Description

Carriage Assembly of Mobile Rack < RTI ID = 0.0 >

The present invention relates to a rack for an assembled mobile rack having improved storability and transportability, and more particularly, to a rack for a built-up type mobile rack which has a frame in which a rack system is formed above and a rotating part mounted on the frame for providing a feeding force, The frame is constructed so that the side portion, the connecting portion and the diagonal connecting portion can be disassembled and assembled into the respective single structures, thereby minimizing the space for the entire components of the disassembled frame, thereby reducing the ease of movement and lowering the cost of the product. To a bogie for an assembled type mobile rack that improves storage and transportability.

Generally, the term "logistics" refers to a series of product flow processes in which products produced in various industrial sites are transported, unloaded, stored, packaged, and delivered from a production supplier to a consumer.

In such a logistics process, in particular, a logistics warehouse (distribution center) is widely used as a central facility for centralized functions to concentrate produced products. In such a logistics warehouse, a large number of goods are supplied from a supplier Classification, storage, and distribution processing, and discharges the processed articles to deliver them to a large number of customers.

Accordingly, the above-mentioned warehouse can be constructed and used as a means for stably storing and transporting a large amount of articles to be received, and a typical example of the loading means constructed for this purpose Is a typical electric rack.

The conventional electric rack is constructed in such a manner that a motorized bogie is mounted on a lower surface of a rack structure provided with a storage space of a multi-layered structure, and the movement of the motorized bogie is induced on the floor of the warehouse where the electric rack is built And a driving guide rail for driving the vehicle.

In addition, when a large-scale logistics management is performed, a mobile rack is equipped with a motor and a power transmission means in a bogie so as to transmit the rotational driving force of the motor to the wheels, thereby moving the mobile rack.

The conventional mobile rack is constructed such that the rack system is configured so as to have a bogie constructed at the lower end and an efficiency of the distribution through the loading of the goods above the bogie.

Further, the bogie comprises a bogie frame and a rotating part configured on the bogie frame to enable movement of the mobile rack.

The bogie frame is typically composed of a plurality of frames to form a square shape.

However, in the conventional bogie frame, there is a problem in that deformation due to twisting occurs between the frames due to heat generated during the welding operation by fixing mutually joined portions of a plurality of frames by welding or the like.

The problem of the deformation between the frames is to lose the responsiveness to the load acting on the goods loaded through the rack system constituted on the bogie frame, thereby reducing the durability of the mobile rack, There is a problem that the mobile rack may collapse. As a result, there arises a problem of causing a vulnerability of a safety accident that an operator may be injured.

In addition, since the conventional bogie frame is shipped from the manufacturing factory in a state where the size is fixed by welding, the bogie frame is installed in the field. Therefore, when the bogie frame having a predetermined size is stored in a manufacturing factory, There is a problem that the efficiency is lowered.

In addition, since the loading space is enlarged to a fixed size of the bogie frame in order to move it for on-site installation in the manufacturing factory by the standardized bogie frame, there is a problem that the unit cost of the transportation cost is increased.

In addition, there is a problem that the efficiency of assembling, which must be carried by a plurality of workers in cooperation with a heavy load during a field installation by a standardized bogie frame, or through a separate equipment such as a forklift, is reduced.

Korean Registered Utility Model No. 20-216032 (Registered on December 28, 2000) Korean Registered Utility Model No. 20-365952 (registered on October 18, 2004) Korean Patent No. 10-843308 (registered on June 26, 2008)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a frame structure for a rack system which is formed above a rack system and which is mounted on the frame and which provides a feed force, The connecting portion can be disassembled and assembled into respective single structures, thereby minimizing the space for the entire components of the disassembled frame, thereby reducing the ease of movement and the cost of the logistics cost. And a bogie for an assembled type mobile rack in which the bogie is improved.

According to an aspect of the present invention, there is provided a bogie for a mobile rack, the bogie comprising a frame and a rotatable portion for supporting the frame so as to be freely transported, the frame including a plurality of side surfaces And a connecting portion that is formed in a direction orthogonal to the plurality of side portions and supports the connecting portion in a generally rectangular shape; The side portion is constituted by a corner portion formed at each of both ends, a side plate coupled to both sides of the corner portion symmetrically to each other, and an upper tension plate configured to be connected to a rack system formed at an upper portion of the corner portion, ; Wherein the corner portion comprises an upper surface on which a first fastening hole is formed, a side extending downward from both ends of the upper surface, a side surface on which a second fastening hole is formed, and a front surface extending downward from a front surface of the upper surface; The side plate has an upper bent portion formed at one side thereof with a third fastening hole at a position corresponding to the first fastening hole of the corner portion, an insertion hole extending downwardly of the upper bent portion and supporting the rotating portion to be coupled to one side thereof, And a lower bending portion bent outward from a lower end of the side shorting portion and having a sixth fastening hole formed therein; Wherein the upper connecting portion includes a fixing plate having a seventh fastening hole at a position corresponding to the first fastening hole of the corner portion and the third fastening hole of the side plate and fixed to the corner portion together with the side plate by bolts, And a rack connecting rod protruded to be connected to the rack system.

In the present invention, it is preferable that the frame includes diagonal connection portions which provide a fixing force and a supporting force in a diagonal direction between a plurality of side portions spaced apart from each other by a predetermined distance so as to compensate for the distortion of the rectangular frame desirable.

In the present invention, the plurality of side plates include a fifth fastening hole at least one side of which is formed on one side of the side wall section; And at least one fixing bracket that is fastened and fixed by the fifth fastening hole to support the fixing force between the plurality of side plates so as to be improved.

In the present invention, the connecting portion includes a plurality of side brackets arranged at positions spaced apart from each other at both ends, and a plurality of side brackets formed between the side brackets; Wherein the side bracket is formed with an eighth fastening hole at a position corresponding to the second fastening hole of the corner portion and the fourth fastening hole of the side plate and is fastened and fixed to the corner portion together with the side plate by bolts; And one side of the side bracket may be provided with a flow hole for changing the position of the side bracket so as to compensate for an error due to a machining error or an assembly error when the corner bracket is fixed to the corner.

In the present invention, the rotating portion includes: a rotating shaft formed so as to communicate with one end of the sliding keyway; A wheel inserted into the rotary shaft; First and second bearings formed at both ends of the wheel, the first and second bearings being inserted into the rotation shaft to support the rotation shaft and the wheel to rotate smoothly on the frame; A key that is seated in the sliding keyway of the rotation shaft and integrated with the wheel and supports the wheel and the first and second bearings so as not to interfere when the rotation shaft is released from the inside to the outside of the frame; A coupling fixed to an end of a rotary shaft located on an inner side of the frame; A coupling shaft coupled to one end of the coupling to maintain a mutual connection state with a rotary shaft corresponding to the other of the frames, the coupling shaft providing a supporting force to prevent a deflection from being generated in a rotary shaft opposed to the frame; A collar formed between the wheel and the first and second bearings to prevent wear from occurring between the wheel and the first and second bearings due to side contact when rolling; And a fixing pin formed between the rotation shaft and the coupling to fix the coupling firmly to the rotation shaft so as to improve a supporting force for connection with the connection shaft.

According to the present invention, there is provided a rack system comprising a frame constituting an upper rack system and a rotating part mounted on the frame and providing a feeding force, the frame being capable of disassembling and assembling the side part, the connecting part and the diagonal connecting part into respective single configurations Thus, there is an effect of enhancing the competitiveness of the product which reduces the ease of movement and the cost of the logistics by minimizing the space for loading the components of the whole frame.

1 is an exploded perspective view of a bogie for a mobile rack according to the present invention.
2 is a schematic cross-sectional view of a bogie for a mobile rack according to the present invention.
3 is an exploded perspective view of a side portion according to the present invention;
4 is a perspective view of a corner portion according to the present invention;
5 is a perspective view of a side plate according to the present invention.
6 is a perspective view of a top connecting plate according to the present invention;
7 is a perspective view of a connection part according to the present invention;
8 is a perspective view of a diagonal connection according to the present invention;
Figs. 9A and 9B are views showing the operation of the bogie according to the present invention on the rotating portion. Fig.

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

1 to 9, the carriage for the assembled type mobile rack of the present invention includes a frame 100 and a rotation unit 200 configured to rotate on the frame 100 to be movable .

The frame 100 is a means for providing a supporting force so that a rack system is formed at an upper end portion.

The frame 100 includes a plurality of side portions 110 formed at mutually opposite positions and a connection portion 120 connecting the plurality of side portions 110 in a direction orthogonal to each other to support the rectangular shape as a whole.

In addition, the frame 100 includes diagonal connection portions 130 for providing a fixing force in a diagonal direction with respect to a plurality of side portions 110, which are spaced apart from each other at both ends. The diagonal connection part 130 may be formed at the lower end of the side part 110.

The side part 110 includes a plurality of corner parts 112 formed at both ends thereof, a side plate 114 configured to form side surfaces of the plurality of corner parts 112, And a top connecting plate (116) for supporting the rack system to be connected to the rack system.

The corner portion 112 includes a top surface 1122 to which the top connecting plate 116 is coupled at an upper portion thereof and a plurality of curved portions 112a and 112b formed at both sides of the top surface 1122 and having a predetermined length, A side surface 1124 and a front surface 1126 that is bent at the front surface of the top surface 1122 to be finished. Accordingly, the rear surface and the bottom surface of the corner portion 112 are opened.

In addition, a plurality of first fastening holes 1123 are formed on the upper surface 1122 so as to be fastened to the upper connecting plate 116. In addition, a communication hole having a predetermined size is formed at the center of the upper surface 1122.

Each of the plurality of side surfaces 1124 is formed with a plurality of second fastening holes 1125 so as to be fastened to the side plate 114.

In addition, a communication hole having a predetermined size is formed on the front surface 1126.

Further, the first and second fastening holes 1123 and 1125 are formed with a female screw having a predetermined depth to facilitate fastening with the bolt. In this case, it is preferable that the first and second fastening holes 1123 and 1125 are fastened to the bolt by fixing a nut to the inner surface of the upper surface 1122 and the side surface 1124. Of course, the present invention is not limited thereto, and any structure can be adopted as long as it can be easily fastened to the bolt.

The plurality of side plates 114 are provided to face each of opposite ends of the corner portion 112 to form side portions. Further, a rotating part 200 is formed between the plurality of side plates 114.

The side plate 114 includes an upper bent portion 1142 having a predetermined width and a side cutting trough portion 1144 extending downward from the one end of the upper bent portion 1142 by a predetermined length and a side cutting trough portion 1144 extending from the side cutting trough portion 1144 And a lower bent portion 1146 that extends a predetermined length toward the outside.

The upper bending portion 1142 is formed at a position corresponding to the body 1 fastening hole 1123 of the corner portion 112 at each of both ends and has a third fastening hole 1141 to be fixed to the upper end of the corner portion 112 .

The side wall 1144 has an insertion hole 1143 through which the rotation axis of the rotation part 200 is inserted.

A fourth fastening hole 1145 is formed in the side cutting trough portion 1144 so that a cover or other plate material is fastened to a portion where the rotation portion 200 is positioned to protect the rotation portion 200.

The side wall 1144 is provided with a fixing bracket 118 for fixing the side plates 114 facing each other with the corner 112 facing each other, A hole 1147 is formed.

In this case, at least one of the fixing brackets 118 is formed between the plurality of side plates 114. Also, the fixing bracket 118 is preferably formed in a channel shape of a 'C' shape. Of course, the present invention is not limited thereto, and any shape can be used as long as it can stably fix the plurality of side plates 114.

The lower bent portion 1146 is formed with a sixth fastening hole 1148 at one end of the diagonal connecting portion 130 at both ends thereof.

The plurality of side plates 114 are formed at both ends of the corner portion 112. An upper bent portion 1142 is located on the upper surface 1122 of the corner portion 112 so as to face each other, The lower end bending portion 1146 is positioned in the outer direction of the corner portion 112 while being positioned such that one end of the side separation bending portion 1144 of the side plate 114 overlaps the side surface 1124 of the corner portion 112, do.

The upper connecting plate 116 is composed of a fixing plate 1162 and a rack connecting rod 1164.

The fixing plate 1162 is formed in a plate shape and is seated on the upper surface 1122 of the corner portion 112. The fixing plate 1162 is provided with a first fastening hole 1123 formed on an upper surface 1122 of the corner portion 112 and a third fastening hole 1141 formed on an upper bent portion 1142 of the side plate 114 And a seventh fastening hole 1163 is formed at a position corresponding to the second fastening hole 1163. The fixing plate 1162 and the side plate 114 are fastened to and separated from the upper surface 1122 of the corner portion 112 by the bolts.

The rack connecting rod 1164 is a means for connecting the rack connecting rod 1164 to a rack system formed at the upper end of the rack,

The rack connecting rod 1164 is fixed to the fixing plate 1162 by a welding method such as welding.

The connecting portion 120 is a means for connecting the plurality of side portions 110, which are spaced apart from each other at both ends, to each other to provide a clamping force to constitute a rectangular frame 100 as a whole.

The connection part 120 is composed of a side bracket 122 and a tube 124.

The side brackets 122 are tightly fixed to one end of the side plates 114 of the side parts 110 formed at both ends.

The side bracket 122 is formed at a position corresponding to the second fastening hole 1125 of the corner portion 112 and the fourth fastening hole 1145 of the side plate 114, And an eighth fastening hole 123 for fastening and fixing the fastening part 114 to the corner part 112 is formed.

The side bracket 122 is formed with a flow hole 125 for changing the fixing position when the side bracket 122 is fixed to the corner portion 112 through the eighth fastening hole 123. The flow holes 125 are formed in a streamlined shape with one end being opened and corresponding to any one of the plurality of eighth fastening holes 123 so that when the flow holes 125 are fixed to the corner portions 112, And so on.

Each of the tubes 124 is fixed to the side brackets 122 at both ends thereof to support the sides of the side walls 110 located at both ends thereof.

The diagonal connection part 130 is a means for enhancing the fixing force and the supporting force in the diagonal direction with respect to the side part 110 which is positioned at a predetermined distance from each of the both ends and is kept in a fixed state by the connection part 120.

The diagonal connection part 130 includes a fixed end 132 and a tension fixing rod 134.

The fixed end 132 is fastened to the lower end of the side plate 114 of the side part 110 by bolts. In this case, one end of the fixed end 132 is fixed to the lower end of the side plate 114, and the protruded end is maintained to protrude inward by a predetermined length. A ninth fastening hole 133 is formed at one end of the protruding fastening end 132 so that one end of the tension fixing rod 134 can be fastened and fixed.

The tension fixing rod 134 is fixed to one end of the fixed end 132 to support the diagonal direction of the frame 100 to provide a fixing force and a supporting force.

The tension lock rods 134 are fixed to the fixed ends 132, and then the turnbuckle is configured to compensate for warpage or the like of the truck frame 100. Of course, the present invention is not limited thereto, and the tension fixing rods 134 may be any means capable of providing a fixing force with respect to the diagonal direction with respect to the carriage frame 100. For example, It may be constituted by a tube.

The rotation unit 200 is a means for supporting the mobile rack 200 at a corner of the frame 100 to smoothly transfer the mobile rack.

The rotation unit 200 includes a rotation shaft 210, a wheel 220, first and second bearings 230 and 240, a key 250, a coupling 260, and a fixing pin 270 .

The rotation shaft 210 is inserted into the frame 100 and is supported to rotate freely so that the rolling motion of the wheel 220 is smoothly performed.

The rotation shaft 210 is formed between the plurality of side plates 114 of the frame 100 at one end, and the stop ring 212 for blocking the insertion of the rotation shaft 210 to the inside is constituted at one end. In this case, the detent ring 212 is kept in close contact with one end of the outer side of the frame 100, thereby interrupting the insertion depth of the rotation shaft 210.

Accordingly, the rotation shaft 210 is inserted into the plurality of side plates 114 of the frame 100 at a predetermined depth.

A sliding key groove 214 is formed in the rotary shaft 210 so as to be integrated with the wheel 220 by a key 250 and to receive the key 250 to rotate together with the wheel 220.

The sliding keyway 214 is formed so as to communicate from the portion where the wheel 220 is located to the inside of the base frame 100 to the end of the rotary shaft 210. Accordingly, the key 250 inserted into the sliding keyway 214 can be inserted and removed from the inside of the frame 100.

A pin hole 216 into which the fixing pin 270 is inserted is formed at one end of the rotary shaft 210, that is, at one end located on the inner side of the frame 100. The pin hole 216 allows the fixing pin 270 to be inserted to provide a fixing force for stably fixing the coupling 260. In some cases, the fixing pin 270 may be replaced with a fixing screw 270 a set screw may be used. In this case, the pin hole 216 may be omitted.

The wheel 220 is inserted into the rotation shaft 210 and integrated with the key 250 to rotate together with the rotation shaft 210.

The wheel 220 includes an outer ring 222 having a predetermined width and a protruding outer ring 224 having a predetermined width at a center of the outer ring 222 and forming a predetermined height.

The protruding outer ring 224 protrudes from the outer ring 222 at a predetermined height, and when the rolling operation is performed by substantially contacting the ground, the contact area with the ground is minimized to facilitate the change of direction . Of course, the projection outer ring 224 may be omitted in some cases.

The wheels 220 are preferably made of a synthetic resin such as urethane or silicone resin having a high friction coefficient to facilitate rolling with the ground. Of course, the present invention is not limited thereto, and any material of the wheel used in the bogie for a mobile rack can be used.

In addition, a key groove is formed in the wheel 220 so that an insertion hole and a key 250, into which the rotation shaft 210 is inserted, are integrated by the key 250.

The first and second bearings 230 and 240 are fixed on the frame 100 so as to be configured on both ends of the wheel 220. In this case, the bearing housing is formed in the side plate 114 of the frame 100 so that the first and second bearings 230 and 240 can be stably fixed. Of course, the present invention is not limited thereto, and any structure can be used as long as the first and second bearings 230 and 240 can be stably fixed on the frame 100.

The side surfaces of the wheel 220 and the first and second bearings 230 and 240 are prevented from being in close contact with each other between the wheel 220 and the first and second bearings 230 and 240, A collar 280 is formed to maintain the gap so as to prevent the side surface from being worn when the wheels 220 roll. The curled elastic member 280 may be formed of a soft material to prevent abrasion between the wheel 220 and the first and second bearings 230 and 240.

The key 250 is provided between the sliding keyway 212 of the rotary shaft 210 and the keyway of the wheel 220 to support the rotary shaft 210 and the wheel 220 in unison.

The coupling 260 is fixed to the end of the rotary shaft 210, that is, the end portion located on the outer side of the plurality of side plates 114 of the frame 100, 220 are mutually connected to each other.

The coupling 260 includes a body 262 having an insertion groove 262 formed therein at a predetermined depth so that one end of the rotation shaft 210 is inserted therein and a body 262 protruding from the other end of the body 262 by a predetermined length, And an insertion end 264 for supporting the shaft 290 to be inserted and coupled.

The coupling 260 is configured to support the connection shaft 290 between the wheels 220 corresponding to the opposite ends of the frame 100 so that the connection between the wheels 220, So that the rolling motion of the wheel 220 can be performed easily.

The body 262 is formed with a pin hole into which the fixing pin 270 is inserted. Of course, the present invention is not limited thereto, and the pin hole may be formed in accordance with the structural or structural characteristics of the fixing pin 270, and the coupling pin 260 may be stably Any shape or shape can be used so as to be able to maintain the fixed state.

The fixing pin 270 is a means for supporting the coupling 260 on the rotation shaft 210 so as to maintain a stable fixed state. The fixing pin 270 is formed of a split pin, a spring pin, a taper pin, or the like. Of course, the present invention is not limited thereto, and the fixing pin 270 may be any means that can stably fix the coupling 260 to the rotary shaft 210. For example, a stop screw.

The fixing pin 270 connecting the coupling shaft 290 and the coupling 260 may be removed so that the rotation shaft 210 is rotated at one end of the rotation shaft 210 The coupling 260 and the connecting shaft 290 are separated.

Then, the exposed portion of the rotary shaft 210 located on the inner side of the frame 100 is released from the inner side to the outer side of the frame 100 through an excellent tool such as a hammer or the like.

At this time, the rotation shaft 210 and the wheel 220 are kept in an integrated state by the key 250, but the rotation axis 210 formed by the sliding key groove 214 formed on the rotation axis 210 does not interfere with the key 250 Are easily released from the inner side to the outer side of the frame 100.

Thus, the wheel 220 inserted into the rotary shaft 210, the collar 280, and the first and second bearings 230 and 240 are kept separated from each other, You can do the work.

The above description is only one embodiment for carrying out the bogie for the assembled type mobile rack with improved storage and transportability, and the present invention is not limited to the above embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

100: frame 110:
112: corner portion 1122: upper surface
1123: first fastening hole 1124: side
1125: second fastening hole 1126: front surface
114: side plate 1141: third fastening hole
1142: upper bent portion 1143: insertion hole
1144: side cut-off portion 1145: fourth fastening hole
1146: Lower bent portion 1147: Fifth fastening hole
1148: Sixth fastening hole 116: Upper connecting plate
1162: Fixing plate 1163: Seventh fastening hole
1164: Rack connecting rod 118: Fixing bracket
120: connection part 122: side bracket
123: eighth fastening hole 124: each pipe
125: flow hole 130: diagonal connection
132: Fixed end 133: Ninth fastening hole
134: Tension fixing rod 200:
210: rotating shaft 212:
214: Sliding key groove 216:
220: Wheel 222: Outer ring
224: projection outer ring 230: first bearing
240: second bearing 250: key
260: coupling 262: body
263: insertion groove 264: insertion end
270: Retaining pin 280: Color
290: Connection axis

Claims (5)

A bogie for a mobile rack comprising a frame and a rotating portion formed on the frame and supporting the bogie so that the bogie can be freely transferred,
The frame 100 includes a plurality of side portions 110 spaced apart from each other at both ends thereof and a connecting portion 120 formed in a direction orthogonal to the plurality of side portions 110 to support the frame 100 in a rectangular shape as a whole Include;
The side portion 110 includes a corner portion 112 formed at each of both ends, a side plate 114 which is symmetrically coupled to both sides of the corner portion 112, And a top connecting plate (116) for supporting the rack system to be connected to a rack system formed above the rack system;
The corner portion 112 includes an upper surface 1122 on which a first fastening hole 1123 is formed and a second fastening hole 1125 extending downward from both ends of the upper surface 1122, A side surface 1124 and a front surface 1126 extending downward from the front surface of the top surface 1122;
The side plate 114 includes an upper bent portion 1142 formed at one side thereof with a third fastening hole 1141 at a position corresponding to the first fastening hole 1123 of the corner portion 112, An insertion hole 1143 extending downward from the first side 1142 and supporting the rotation part 200 to be coupled to the first side and a side separation valley 1144 having a fourth coupling hole 1145 formed on the other side, And a lower bent portion 1146 that is bent outward from the lower end of the lower portion 1144 and in which the sixth fastening hole 1148 is formed;
The upper connecting plate 116 is formed with a seventh fastening hole 1163 at a position corresponding to the first fastening hole 1123 of the corner portion 112 and the third fastening hole 1141 of the side plate 114 A fixing plate 1162 fixed to the corner portion 112 together with the side plate 114 by a bolt and a rack connecting rod 1164 protruding at a predetermined height in the center of the fixing plate 1162 and connected to the rack system;
And a braking device for braking the movable braking device.
[3] The frame according to claim 1,
A diagonal connecting portion 130 for providing a fixing force and a supporting force in a diagonal direction between a plurality of side portions 110 configured to be spaced apart from each other by a predetermined distance to enable compensation for distortion of a rectangular frame;
And a braking device for braking the movable braking device.
[2] The apparatus according to claim 1, wherein the plurality of side plates (114)
And a fifth fastening hole (1147) formed on at least one side of the side break piece (1144);
At least one fixing bracket 118 which is fastened and fixed by the fifth fastening holes 1147 and supports the plurality of side plates 114 to improve fixing force between the side plates 114;
And a braking device for braking the movable braking device.
The method according to claim 1,
The connection unit 120 includes a plurality of side brackets 122 and a plurality of side brackets 122 formed between the side brackets 122 at positions spaced apart from each other at both ends thereof.
An eighth fastening hole 123 is formed in the side bracket 122 at a position corresponding to the second fastening hole 1125 of the corner 112 and the fourth fastening hole 1145 of the side plate 114, Is fixed to the corner portion (112) together with the side plate (114);
A flow hole 125 for changing the position of the side bracket 122 so as to compensate for an error due to a machining error or an assembly error when the side bracket 122 is fixed to the corner portion 112;
And a braking device for braking the movable braking device.
[3] The apparatus according to claim 1,
A rotation shaft 210 formed to communicate with one end of the sliding keyway 214;
A wheel 220 inserted into the rotation shaft 210;
The first and second bearings 220 and 230 are disposed at both ends of the wheel 220 and inserted into the rotation shaft 210 to support the rotation shaft 210 and the wheel 220 on the frame 100, 230) 240;
When the wheel 220 and the first and second bearings 230 and 240 are maintained in the sliding key groove 214 of the rotation shaft 210 and integrated with the wheel 220, So as not to interfere with the detachment from the inner side to the outer side of the frame (100);
A coupling 260 fixed to an end of a rotary shaft 210 located on the inner side of the frame 100;
And is coupled to one end of the coupling 260 so as to maintain a mutual connection state with a rotary shaft 210 positioned corresponding to the other side of the frame 100. The rotary shaft 210, which is opposed to the frame 100, A connection shaft 290 for providing a supporting force for preventing the rotation of the motor;
The first and second bearings 230 and 240 are installed between the wheel 220 and the first and second bearings 230 and 240 to rotate the wheel 220 and the first and second bearings 230 and 240 A color 280 to prevent abrasion from occurring on the surface of the substrate;
A locking pin 260 is provided between the rotary shaft 210 and the coupling 260 so that the coupling 260 is firmly fixed to the rotary shaft 210 to improve the supporting force for connection with the connecting shaft 290. [ 270);
And a braking device for braking the movable braking device.

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