CN215284458U - Stand and contain its power station or energy storage station that trades - Google Patents

Abstract

The utility model relates to a stand and contain its trade power station or energy storage station. The upright post is used for connecting and fixing a battery replacing station or an energy storage station inner storage board or a wrap angle, and the outer surface of the upright post is provided with a clamping matching piece. The stand sets up block matching spare to be convenient for carry out the block with other components and be connected to be convenient for trade the modularization equipment in power station or energy storage station.

Description

Stand and contain its power station or energy storage station that trades

Technical Field

The utility model relates to a trade the power station field, in particular to stand and contain its trade power station or energy storage station.

Background

The conventional battery mounting methods for electric vehicles are generally classified into a fixed type and a replaceable type, wherein the fixed type battery is generally fixed on the vehicle, and the vehicle is directly used as a charging object during charging. The replaceable battery is generally movably mounted, can be taken down at any time for replacement or charging, and is mounted on the vehicle body after replacement or charging is finished.

The replaceable battery installation mode can realize the quick replacement of the battery, the long-term standby charging of the automobile is avoided, if the battery is to be replaced, a battery replacement station needs to be provided, and the replacement of the battery in the battery replacement station is realized by the automobile. The power conversion station needs to meet a certain strength requirement so as to support the assembly of various components in the power conversion station and the weight of the power conversion station and bear a certain external pressure. The utility model discloses a bridge cut-off formula sunshine room stand with drainage function in prior art CN207863302U, including the head tree, spacing connecting piece, thermal-insulated adhesive tape, side stand and support bent plate, the head tree is the hollow section bar of L type, spacing connecting piece both sides edge has the card tooth, be equipped with the draw-in groove on the side stand inner wall, spacing connecting piece and side stand pass through card tooth and draw-in groove buckle fixed connection, the side stand is close to and has the extension end on the side of opposite side stand, support bent plate both ends respectively with the extension end fixed connection of two side stands. The structural strength that the above-mentioned connected mode through calorie tooth, draw-in groove is connected is low, and main column and side stand still need connect through the spacing connecting piece that the structure is responsible for, unsatisfied connection structure intensity and the fast assembly's of trading power station or energy storage station demand.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a stand that joint strength is high and can fast assembly and contain it trade power station or energy storage station.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides an upright for it is fixed to trade connection of power station or energy storage station inner storage board or cornerite, the surface of upright is equipped with block matching piece, block matching portion certainly the surface of upright outwards extends and forms the kink, the kink with the surface of upright forms the open slot.

The stand sets up block matching spare to be convenient for carry out the block with other components and be connected to be convenient for trade the modularization equipment in power station or energy storage station. The clamping matching part is designed into the bending part, and an open slot is formed on the outer surface of the stand column, so that on one hand, the connection strength of the stand column and other parts is improved by the arrangement of the bending part, and the quick assembly with other structures is facilitated.

Preferably, the upright post is provided with a hollow cavity, and the cross section of the hollow cavity is square, L-shaped or U-shaped.

The stand column with various cross-sectional shapes is suitable for connection among different positions and structural warehouse boards, heat preservation and insulation materials can be arranged in the hollow cavity of the stand column as required, and on the other hand, the strength can be improved, so that the effect of improving the structural strength and preserving heat is achieved.

Preferably, the clamping matching piece is a buckle or a clamping groove, the buckle extends outwards from the outer surface of the upright post, and the clamping groove is inwards recessed from the outer surface of the upright post.

The clamping matching pieces are arranged into buckles or clamping grooves, so that the stand column can be conveniently detachably connected with other members such as a warehouse board or a wrap angle or a frame, and the modular assembly is facilitated.

Preferably, the block matching piece includes spigot surface and clamping face, the spigot surface is used for guiding connecting piece on storehouse board or the cornerite gets into, the clamping face is used for leaning on the connecting piece, in order to connect fixedly storehouse board or cornerite, the spigot surface with the clamping face is located respectively the opposite both sides of block matching piece, just the spigot surface towards the clamping face slope.

The arrangement is convenient for connection guiding and clamping fixing between the clamping matching piece and the connecting piece.

Preferably, the stand includes inner wall and outer wall, form between inner wall and the outer wall the cavity, block matching piece is located deviating from of inner wall the internal surface of cavity.

By providing the snap-fit mating member on the inner wall of the upright, other components such as a shelf, a wrap angle or a frame can be conveniently attached to the inside of the upright.

Preferably, the engaging matching piece extends inwards from the inner surface of the inner wall to form a bent portion, and the bent portion and the inner wall form an open slot with an opening facing the inner surface of the inner wall.

One side of the open slot is used for connecting the clamping connecting piece, and acting force towards the direction of the upright column is applied to the warehouse board or the wrap angle, so that the connecting strength and the stability are improved.

Preferably, the stand includes the connecting wall, the connecting wall connect perpendicularly in the inner wall with between the outer wall, the block matching piece is located on the connecting wall.

Through setting up the connecting wall for hollow cavity forms annular closed cavity, sets up block matching spare simultaneously on the connecting wall, makes things convenient for the stand to be connected with other components such as frame and storehouse board.

The kink is arranged in the block groove of block in other components such as cornerite, connects other components in the stand steadily, improves the whole connection strength and the stability of trading power station or energy storage station. One side of the open slot is used for connecting the clamping connecting piece, and acting force towards the direction of the upright column is applied to the warehouse board or the wrap angle, so that the connecting strength and the stability are improved.

Preferably, the upright post is made of aluminum alloy, plastic or steel, so that the cost is reduced, and the strength is improved.

The utility model provides a trade power station or energy storage station, its includes a plurality of stand and storehouse board as above, the stand is located the periphery of trading the power station in order to form braced frame, the storehouse board is located the periphery of stand, with block matching spare on the stand can be dismantled and be connected to conveniently realize trading the modularization equipment in power station or energy storage station.

Preferably, the stand and the storehouse board are connected and fixed through the cornerite, the internal surface of cornerite is equipped with the connecting piece, the connecting piece with block matching piece block on the stand is fixed, the internal surface of cornerite supports and leans on the storehouse board to press from both sides the storehouse board tight fixed in the cornerite with between the stand.

The storehouse plates are connected and fixed on the stand columns through the wrap angles, so that the waterproof sealing performance of the joints is improved while the connection strength of the storehouse plates is realized

The utility model discloses an actively advance the effect and lie in: the stand sets up block matching spare to be convenient for carry out the block with other components and be connected to be convenient for trade the modularization equipment in power station or energy storage station. The power changing station or the energy storage station comprising the stand column has the same effects.

Drawings

Fig. 1 is a plan view of a power swapping station according to embodiment 1 of the present invention.

Fig. 2 is a schematic perspective view of a power exchanging station according to embodiment 1 of the present invention.

Fig. 3 is a schematic perspective view of a frame according to embodiment 1 of the present invention.

Fig. 4 is a schematic perspective view of a column according to embodiment 1 of the present invention.

Fig. 5 is a schematic cross-sectional structure view of a column according to embodiment 1 of the present invention.

Fig. 6 is a schematic view of a fitting structure of a pillar according to embodiment 1 of the present invention.

Fig. 7 is a schematic perspective view of a column according to embodiment 2 of the present invention.

Fig. 8 is a schematic cross-sectional structure view of a column according to embodiment 2 of the present invention.

Fig. 9 is a schematic view of a fitting structure of a pillar according to embodiment 2 of the present invention.

Fig. 10 is a schematic cross-sectional structure view of a pillar according to embodiment 3 of the present invention.

Detailed Description

The present invention is further illustrated by way of example and not by way of limitation in the scope of the embodiments described in the following figures in conjunction with the accompanying drawings.

Example 1

Fig. 1 illustrates a power swapping station 100 according to an embodiment 1 of the present invention.

The battery replacing station 100 comprises a battery replacing platform 101, two charging rooms 102 respectively arranged at two sides of the battery replacing platform 101, and a battery replacing trolley reciprocating between the battery replacing platform 101 and the charging rooms 102 and used for disassembling and assembling a battery pack of a vehicle. The charging station 100 may also include a monitoring room, a storage room, and the like.

The battery replacing platform 101 is used for bearing a vehicle with a battery pack to be replaced, the vehicle drives into and stops at the battery replacing platform 101, an old battery pack to be charged on the vehicle is detached by the battery replacing trolley, a fully charged new battery pack is installed, and the old battery on the vehicle is transported to the charging room 102 for charging after the old battery on the vehicle is detached by the battery replacing trolley.

In the charging room 102, a charging rack, a lifter, a main control box and other devices are placed, the charging rack is used for accommodating the battery pack and charging the old battery pack, and the lifter is used for exchanging the battery pack with the battery replacement trolley and taking out or putting the battery pack into the charging rack.

As shown in fig. 2 and 3, the power exchanging station 100 of the present embodiment is supported by a plurality of frames 105 and is partitioned into a plurality of function rooms such as a charging room 102, a monitoring room, and the like, and is covered with a library board 137 on an outer surface thereof to isolate the inside and outside of the function rooms, prevent foreign substances such as external rainwater, dust, and the like from entering the inside of the power exchanging station 100, and cause damage to electric components such as a charging rack, a main control box, and the like in the power exchanging station 100.

The power conversion station 100 has a top surface 103, a side surface 104, and a bottom surface. The top surface 103 and the side surface 104 of the power conversion station 100 are covered with the library board combination unit. The library board assembly unit is connected to the frame 105 of the power exchanging station 100 by means of a snap fit or the like.

The storehouse board combination unit is detachably arranged at the periphery of the frame 105

As shown in fig. 3, the frame 105 includes a plurality of beams 107 and columns 108 combined with each other.

The library board assembly unit may be connected with the cross beam 107 and the upright 108 of the frame 105 through the library board 137. For example, the library board 137 is provided with a buckle, the frame 105 is provided with a slot corresponding to the buckle, and the buckle and the slot are assembled together by the clamping of the buckle and the slot.

The library board assembly units may also be connected to the cross beams 107 and the uprights 108 of the frame 105 by wrap angles 130. For example, the two are assembled together by the engagement of the engagement piece 131 on the wrap angle 130 with the engagement mating piece 112 on the pillar 108 or the cross beam 107.

The magazine board assembly unit includes magazine boards 137 and wrap angles 130 (see fig. 6). The wrap angle 130 is used for connection between adjacent library boards 137 in the power change station 100 or the energy storage station.

The library board 137 is clamped and fixed between the wrap angle 130 and the frame 105.

Fig. 4-6 illustrate a post 108 according to embodiment 1 of the present invention.

The upright column 108 is used for connecting and fixing the power conversion station 100 or the energy storage station interior plate 137 or the wrap angle 130, and the outer surface of the upright column 108 is provided with a clamping matching piece 112. The engaging and matching portion 112 extends outward from the outer surface of the pillar 108 to form a bent portion 117, and the bent portion 117 and the outer surface of the pillar 108 form an opening groove 118.

The posts 108 are provided with snap-fit fittings 112 to facilitate snap-fit connections with other components, thereby facilitating modular assembly of the power swapping station 100 or the energy storage station.

The pillar 108 has a hollow cavity 121, and the cross section of the hollow cavity 121 is L-shaped. The upright 108 is adapted to be assembled with the L-shaped corner wrap 130. In other embodiments, other shapes of wrap angles may be used.

The snap-fit mating member 112 is a snap that extends outwardly from the outer surface of the post 108.

Alternatively, the snap-fit mating member 112 may be a snap-in groove that is recessed inwardly from the outer surface of the post 108.

The snap-fit mating members 112 are configured as snaps or slots to facilitate detachable connection of the columns 108 to other components, such as the warehouse board 137 or the wrap corners 130 or the frame 105, to facilitate modular assembly.

The snap-fit matching piece 112 comprises a guide surface 115 and a snap surface 116, the guide surface 115 is used for guiding the connecting piece on the storehouse plate 137 or the wrap angle 130 to enter, the snap surface 116 is used for abutting against the connecting piece to connect and fix the storehouse plate 137 or the wrap angle 130, and the guide surface 115 is inclined towards the snap surface 116 to facilitate the connection guiding and the snap fixing between the snap matching piece 112 and the connecting piece.

The pillar 108 comprises an inner wall 109 and an outer wall 110, a hollow cavity 121 is formed between the inner wall 109 and the outer wall 110, and a snap-fit member 112 is provided on an inner surface of the inner wall 109 facing away from the hollow cavity 121.

By providing the snap-fit mating elements 112 on the inner wall 109 of the upright 108, it is possible to connect other components, such as the ceiling 137, the corner wrap 130 or the frame 105, to the inside of the upright 108 in a simple manner.

In the present embodiment, the engaging member 112 is an L-shaped member, but the present invention is not limited thereto, and the engaging member 112 may be formed on a strip-shaped protrusion on the surface of the pillar 108.

The upright 108 comprises a connecting wall 111, the connecting wall 111 being connected vertically between the inner wall 109 and the outer wall 110, and a snap-fit mating member 112 being provided on the connecting wall 111.

The connection of the upright 108 to other members, such as the frame 105 and the library board 137, is facilitated by providing the connecting wall 111 such that the hollow cavity 121 forms an annular closed cavity, and providing the snap-fit mating member 112 on the connecting wall 111.

The engaging matching member 112 extends inward from the boundary of the connecting wall 111 and the inner wall 109 to form a bent portion 117, and the bent portion 117 and the inner surface of the inner wall 109 form an opening groove 118 that opens toward the inner surface of the inner wall 109.

The bent portion 117 is used for being engaged with other members, such as an engaging groove of the wrap angle 130, so as to stably connect the other members to the upright column 108, thereby improving the overall connection strength and stability of the power exchanging station 100 or the energy storage station. One side of the open slot 118 is used for connecting a clamping connecting piece, and acting force towards the direction of the upright column 108 is applied to the storehouse plate 137 or the wrap angle 130, so that the connecting strength and the stability are improved.

The material of the column 108 is aluminum alloy, plastic or steel. The use of these common materials can reduce costs and increase strength.

Referring to fig. 6, which illustrates an assembly of the upright post 108 and the L-shaped corner wrap 130, the engaging mating member 112 of the upright post 108 is engaged between the engaging portion 132 of the engaging member 131 of the corner wrap 130 and the inner wall 133 of the corner wrap 130, and the library board 137 is held between the extending portion 134 of the corner wrap 130 and the connecting wall 111 of the upright post 108, while the end face of the library board 137 abuts against the side wall 135 of the corner wrap 130. The L-shaped upright column 108 and the L-shaped wrap angle 130 form a square column structure, so that the strength of the corner part of the power station 100 is higher. The outer walls 110 of the columns 108 may be used to connect the cross beams 107 of the frame 105, and so on.

Alternatively, the engagement structures of the upright 108 and the wrap angle 130 may be interchanged, i.e. the upright 108 has an engagement partner in the form of, for example, an engagement 131, in which case the guide surfaces and the engagement surfaces of the engagement partner are provided on opposite sides of the engagement partner, respectively.

Example 2

Fig. 7-9 illustrate a post 201 according to embodiment 2 of the present invention.

The upright column 201 is used for connecting and fixing a power exchange station or energy storage station interior plate 225 or a wrap angle 220, and the outer surface of the upright column 201 is provided with a clamping matching piece 203.

The upright column 201 is provided with a clamping matching piece 203 to facilitate clamping connection with other components, so that modular assembly of the power exchange station or the energy storage station is facilitated.

The pillar 201 has a hollow cavity 211, and the cross section of the hollow cavity 211 is U-shaped. The upright 201 is used for assembling and connecting with the T-shaped wrap angle 220.

In this embodiment, the snap fitting 203 is a snap.

Alternatively, the snap-fit mating member 203 may be a card slot.

The snap-fit mating members 203 are configured as snaps or slots to facilitate detachable connection of the upright 201 to other components, such as the dock plate 225 or the corner 220 or the frame, to facilitate modular assembly.

The snap-fit mating member 203 comprises a guiding surface 205 and a snap-fit surface 206, wherein the guiding surface 205 is used for guiding the snap-fit member on the magazine plate 225 or the corner wrap 220 to enter, and the snap-fit surface 206 is used for abutting against the connecting member to connect the fixed magazine plate 225 or the corner wrap 220.

Alternatively, the snap fitting 203 may be provided in the form of a wrap angle snap 222 as shown in fig. 9, with the guide surfaces and the snap surfaces being provided on opposite sides of the snap fitting, respectively.

The upright 201 comprises an inner wall 214 and an outer wall 213, a hollow cavity 211 is formed between the inner wall 214 and the outer wall 213, and the snap fitting 203 is arranged on the inner surface of the inner wall 214 facing away from the hollow cavity 211.

By providing the snap-fit mating member 203 on the inner wall 214 of the upright 201, other components such as a shelf 225, a wrap angle 220, or a frame can be conveniently attached to the inside of the upright 201.

In the present embodiment, the engaging member 203 is an L-shaped member, but the present invention is not limited thereto, and the engaging member 203 may be formed on a strip-shaped protrusion on the surface of the pillar 201.

The upright 201 comprises a connecting wall 215, the connecting wall 215 being connected perpendicularly between the inner wall 214 and the outer wall 213, the snap-fit mating member 203 being provided on the connecting wall 215.

The connection of the upright 201 to other components, such as the frame and the library board 225, is facilitated by providing the connecting wall 215 such that the hollow cavity 211 forms an annular closed cavity, while the snap-fit mating member 203 is provided on the connecting wall 215.

The engaging matching piece 203 extends inward from the boundary of the connecting wall 215 and the inner wall 214 to form a bent portion 207, and the inner surface of the bent portion 207 and the inner wall 214 form an opening groove 208 that opens toward the inner surface of the inner wall 214.

The bent portion 207 is used for being engaged with other members, such as an engaging groove of the wrap angle 220, so as to stably connect the other members to the upright column 201, thereby improving the overall connection strength and stability of the power exchange station or the energy storage station. One side of the open slot 208 is used for connecting a clamping connecting piece, and acting force towards the direction of the upright column 201 is applied to the storehouse plate 225 or the wrap angle 220, so that the connecting strength and the stability are improved.

The upright 201 is made of aluminum alloy, plastic or steel. The use of these common materials can reduce costs and increase strength.

Fig. 9 illustrates the assembly of the upright 201 with the T-wrap 220.

The catches 222 of the web 221 of the corner wrap 220 snap between the snap-fit mating members 203 of the upright 201 and the inner wall 214 of the upright 201 and hold the library board 225 between the cover plate 223 of the corner wrap 220 and the connecting wall 215 of the upright 201, with the end faces of the library board 225 abutting opposite side faces of the web 221 of the corner wrap 220. The three walls on the outside of the upright 201 may be used to connect the cross beams of the frame, etc.

Example 3

Fig. 10 illustrates a column 301 according to embodiment 3 of the present invention.

The upright column 301 is used for connecting and fixing a power conversion station or an energy storage station interior plate or a wrap angle, and the outer surface of the upright column 301 is provided with a clamping matching piece 303.

The upright column 301 is provided with a clamping matching piece 303 to facilitate clamping connection with other components, so that modular assembly of the power exchange station or the energy storage station is facilitated.

Upright 301 has a hollow cavity 310, and the cross section of hollow cavity 310 is square.

The snap-fit mating member 303 is a snap that extends outwardly from the outer surface of the post 301.

Alternatively, the snap-fit mating member 303 may be a snap groove recessed inwardly from the outer surface of the post 301.

The snap-fit mating members 303 are configured as snaps or slots to facilitate detachable connection of the upright 301 to other components, such as a shelf or corner or a frame, to facilitate modular assembly.

The snap-fit mating member 303 comprises a guiding surface 305 and a snap-fit surface 306, wherein the guiding surface 305 is used for guiding the connector on the warehouse board or the corner wrap to enter, and the snap-fit surface 306 is used for abutting against the connector to connect and fix the warehouse board or the corner wrap.

Alternatively, the snap fitting may be provided in the form of a corner-wrapped snap 222 as shown in fig. 9, with guide surfaces and snap surfaces provided on opposite sides of the snap fitting, respectively, and the guide surfaces being inclined toward the snap surfaces to facilitate connection guiding and snap fixing between the snap fitting and the connector.

The upright 301 comprises an inner wall 312 and an outer wall 311, a hollow cavity 310 is formed between the inner wall 312 and the outer wall 311, and the snap fitting 303 is arranged on the outer wall 311.

The engaging matching member 303 extends outward from the outer surface of the outer wall 311 to form a bent portion 307, and an open slot 308 is formed between the bent portion 307 and the outer wall 311. The bent portion 307 is used for being engaged with another member, for example, an engaging groove of a wrap angle, so as to stably connect the other member to the upright column 301, thereby improving the overall connection strength and stability of the battery replacement station or the energy storage station. One side of the open slot 308 is used for connecting a clamping connecting piece, and acting force towards the direction of the upright column 301 is applied to the warehouse board or the wrap angle, so that the connecting strength and the stability are improved.

One side of the open slot 308 is used for connecting a clamping connecting piece, and acting force towards the direction of the upright column 301 is applied to the warehouse board or the wrap angle, so that the connecting strength and the stability are improved.

The upright 301 includes a connection rib 313 (which may also be understood as a connection wall), and the connection rib 313 is connected between the outer wall 311 and the inner wall 312 so that the inner wall 312 and the outer wall 311 are fixed to each other.

Alternatively, vertical column 301 may be formed as a single layer structure, i.e., having only an outer wall.

Upright 301 is made of aluminum alloy, plastic or steel. The use of these common materials can reduce costs and increase strength.

It will be appreciated by those skilled in the art that the studs of example 1 may be replaced with studs of examples 2-3.

The utility model discloses a trade power station is not limited to the form that fig. 1-2 show, the utility model provides a structure such as storehouse board assembled element, frame, storehouse board and its manufacturing method also are applicable to and trade the power station adopting other structures or overall arrangement.

Similarly, the utility model provides a structure such as storehouse board assembled element, frame, storehouse board also is applicable to the energy storage room that has the function of storing and charging.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are all within the scope of the invention.

Claims (10)

1. The utility model provides an upright for trade connection of power station or energy storage station inner storage board or cornerite is fixed, its characterized in that, the surface of upright is equipped with block matching piece, block matching piece certainly the surface of upright outwards extends and forms the kink, the kink with the surface of upright forms the open slot.

2. The column of claim 1, wherein the column has a hollow cavity having a cross-section that is square, L-shaped, or U-shaped.

3. The stud of claim 1, wherein the snap-fit mating member is a snap extending outward from the outer surface of the stud or a slot recessed inward from the outer surface of the stud.

4. The column according to claim 1, wherein the engaging member comprises a guiding surface and an engaging surface, the guiding surface is used for guiding the entrance of the connecting member on the warehouse board or the corner, the engaging surface is used for abutting against the connecting member to connect and fix the warehouse board or the corner, the guiding surface and the engaging surface are respectively arranged on two opposite sides of the engaging member, and the guiding surface is inclined towards the engaging surface.

5. The column according to claim 1, wherein the column comprises an inner wall and an outer wall, a hollow cavity is formed between the inner wall and the outer wall, and the snap-fit member is disposed on an inner surface of the inner wall facing away from the hollow cavity.

6. The column according to claim 5, wherein the engaging member extends inward from the inner surface of the inner wall to form a bent portion, and the bent portion and the inner wall form an opening groove opening toward the inner surface of the inner wall.

7. The stud of claim 5, wherein the stud includes a connecting wall, the connecting wall being connected perpendicularly between the inner wall and the outer wall, the snap-fit mating member being provided on the connecting wall.

8. A post according to any of claims 1 to 7, wherein the material of the post is an aluminium alloy, plastic or steel.

9. A power conversion station or an energy storage station, which comprises a plurality of upright posts as claimed in any one of claims 1 to 8 and a library board, wherein the upright posts are arranged on the periphery of the power conversion station to form a support frame, and the library board is arranged on the periphery of the upright posts and detachably connected with clamping matching pieces on the upright posts.

10. The power conversion station or the energy storage station as claimed in claim 9, wherein the upright post and the storage plate are connected and fixed through a wrap angle, a connecting piece is arranged on the inner surface of the wrap angle, the connecting piece is clamped and fixed with a clamping matching piece on the upright post, and the inner surface of the wrap angle abuts against the storage plate to clamp and fix the storage plate between the wrap angle and the upright post.

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