CN112336071A

CN112336071A - Multifunctional environment-friendly working platform for electronic commerce and use method thereof

Info

Publication number: CN112336071A
Application number: CN202011327152.4A
Authority: CN
Inventors: 雷启英; 李春伟; 许晴晴; 马迪; 吴金珂; 王巧霞
Original assignee: Henan Industry and Trade Vocational College
Current assignee: Henan Industry and Trade Vocational College
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-02-09

Abstract

The invention discloses a multifunctional environment-friendly working platform for electronic commerce and a using method thereof. The invention relates to the technical field of electronic commerce. The multifunctional environment-friendly working platform for electronic commerce comprises a supporting plate, wherein moving plates are symmetrically and movably connected to the left side and the right side of the supporting plate. The invention is composed of an adjusting mechanism, a telescopic mechanism and a moving mechanism, the range of a single station is expanded by pulling moving plates on two sides of a supporting plate, the number of the stations is adjusted at will, a pressing block releases the pressing on a pin rod by pulling a pull rod, then a baffle can slide into the supporting leg to be retracted by pressing the baffle downwards, and the support leg is lifted upwards, at the moment, a return spring presses a connecting block to move downwards so that a roller moves out of the lower part of the supporting leg to move conveniently. The problem that the number of stations of the existing part of electronic commerce working platforms cannot be adjusted at will, the existing part of electronic commerce working platforms cannot store and release the partition plates, and the existing part of electronic commerce working platforms are inconvenient to move is solved.

Description

Multifunctional environment-friendly working platform for electronic commerce and use method thereof

Technical Field

The invention relates to the technical field of electronic commerce, in particular to a multifunctional environment-friendly working platform for electronic commerce and a using method thereof.

Background

The electronic commerce is a business activity taking an information network technology as a means and taking commodity exchange as a center, and a transaction activity and related service activity are carried out on the Internet, an intranet and a value-added network in an electronic transaction mode, so that the electronic, networking and informatization of each link of the traditional business activity are realized, and a working platform made of special environment-friendly materials is generally required to be used for collective office work in the team office process;

the prior patent (publication number: CN 209995609U) discloses a multi-station workbench device beneficial to an e-commerce platform, which comprises a workbench body. The inventor finds that the following problems in the prior art are not solved in the process of realizing the scheme: 1. the stations of the electronic commerce working platform are fixed and cannot be changed at will, when the number of team workers is small, resource waste can be caused, and when special conditions occur, personnel at the inner stations cannot be evacuated quickly, so that certain potential safety hazards are caused; 2. the partition board of the electronic commerce working platform cannot be adjusted up and down, and when a conference is held, the partition board cannot be folded and unfolded, so that the electronic commerce working platform cannot be suitable for office use under different conditions; 3. when the work area needs to be adjusted, the electronic commerce working platform is inconvenient to move and poor in practicability.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a multifunctional environment-friendly working platform for electronic commerce and a using method thereof, which solve the problem that the number of stations can not be randomly adjusted by the existing part of electronic commerce working platforms; the existing part of electronic commerce working platforms cannot fold and unfold the partition plates; the existing part of electronic commerce working platforms are inconvenient to move.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electronic commerce is with multi-functional environmental protection work platform, includes the backup pad, the left and right sides symmetry swing joint of backup pad has the movable plate, swing joint has adjustment mechanism between movable plate and the backup pad, the bottom fixedly connected with supporting leg of movable plate, swing joint has telescopic machanism between the upper portion of supporting leg and the movable plate, the bottom swing joint of supporting leg has moving mechanism.

Preferably, the adjusting mechanism comprises two arc-shaped grooves, the two arc-shaped grooves are symmetrically formed in the left side and the right side of the supporting plate, arc-shaped sliding blocks are fixedly connected to the front end and the rear end of the moving plate, and the two moving plates are respectively connected to the insides of the two arc-shaped grooves in a sliding mode through the arc-shaped sliding blocks;

the bottom of the supporting plate is symmetrically and movably connected with spring lock rods, and the bottom of the moving plate is provided with lock holes matched with the adjacent spring lock rods.

Further preferably, the side wall of the arc-shaped sliding block is movably connected with a ball, and one side of the ball is lapped on the inner wall of the arc-shaped groove.

Preferably, the telescopic mechanism comprises a moving groove, the moving groove is formed in one side of the moving plate, a baffle is movably connected inside the moving groove, a limiting groove is formed in the lower portion of the baffle, a pull rod is movably connected in the middle of the baffle, a pressing block is fixedly sleeved on the lower portion of the pull rod, and a compression spring is movably connected between the top of the pressing block and the inner top surface of the limiting groove;

the both sides swing joint of spacing groove have with briquetting matched with pin pole, the bilateral symmetry of shifting chute inner wall is seted up and is seted up the pinhole with pin pole matched with, the standing groove with movable plate matched with is seted up at the top of supporting leg.

Further preferably, guide grooves are symmetrically formed in the front side and the rear side of the placing groove, guide blocks matched with the two guide grooves are fixedly connected to the front side and the rear side of the moving plate, and a rubber pad is fixedly connected to the bottom of the placing groove.

Preferably, the lower portion of the movable plate is symmetrically provided with pin grooves, the two pin rods are movably inserted into the two pin grooves respectively, the surfaces of the pin rods are fixedly sleeved with positioning blocks, short springs are movably connected between the side walls of the positioning blocks and the inner walls of the adjacent pin grooves, the two opposite ends of the pin rods are both designed to be arc surfaces, and the tops of the opposite ends of the two pin rods are both designed to be inclined surfaces.

Further preferably, the moving mechanism comprises a movable groove, the movable groove is formed in the bottom of the supporting leg, a connecting block is connected to the inner portion of the movable groove in a sliding mode, a reset spring is fixedly connected between the top of the connecting block and the inner top surface of the sliding groove, the bottom of the connecting block is movably connected with an idler wheel, a limiting rod is movably connected to one side of the connecting block, and a push rod matched with the limiting rod is movably connected to the side wall of the supporting leg.

A use method of a multifunctional environment-friendly working platform for electronic commerce comprises the following steps:

s1, when the number of stations between the working platform needs to be adjusted, firstly, the spring lock rod is pulled, the clamping state is relieved between the spring lock rod and the lock hole, then the movable plates on the two sides of the supporting plate are pulled outwards respectively, the arc-shaped sliding blocks fixedly connected to the movable plates slide in a matched manner with the arc-shaped grooves formed in the supporting plate, the range of a single station is enlarged, the working platform is convenient to use when the number of people is small, the problem that resources are wasted due to the fact that the platform space is idle is avoided, meanwhile, working books, tools and the like can be placed on the surface of the movable plates.

S2, when too many users are used, the two moving plates slide towards the inside of the supporting plate by pulling the spring lock rods, the range of a single station is reduced, new stations are added conveniently for office work, the stations of the working platform are adjusted randomly, and the annular office work is convenient for team communication and the office efficiency is improved.

S3, when an office meeting needs to be held in the office process, the pull rod is pulled upwards, the pressing block fixedly sleeved on the lower portion of the pull rod releases the pressing of the two pin rods, the two pin rods move relatively to release the limiting state between the baffle and the movable plate, then the baffle is pressed downwards, the baffle slides towards the inside of the placing groove formed in the upper portion of the supporting leg, the baffle is folded, and communication among team staff in the meeting process is facilitated.

S4, when the baffle is required to be lifted, the baffle is driven to stretch out from the inside of the placing groove through the pulling pull rod, after the baffle is lifted to a certain height, the pull rod is loosened, the pull rod is compressed by the compression spring to move downwards to push the two pin rods to move back and forth, the two pin rods are connected inside the two adjacent pin holes in a clamped mode, the baffle is supported in a limiting mode, operation is simple and convenient, and office use under different conditions is facilitated.

S5, when the working platform needs to be moved, the supporting legs are lifted upwards, the reset spring supports against the connecting block to move downwards to enable the idler wheels to move out of the lower portions of the supporting legs to be convenient to move, when the working platform needs to be supported, the push rod drives the limiting rod to move to remove the clamping state of the limiting rod and the supporting legs, the gravity on the upper portions of the supporting legs supports against the idler wheels to be retracted into the movable grooves, the movable plates and the supporting plates are supported by the supporting legs, and the working platform is convenient to use and high in practicability.

(III) advantageous effects

The invention provides a multifunctional environment-friendly working platform for electronic commerce and a using method thereof, and the multifunctional environment-friendly working platform has the following beneficial effects:

(1) the device passes through the arc wall, the cooperation of parts such as arc slider and movable plate is used, the joint is removed with the lockhole to the pulling spring locking lever, make the movable plate slide through the arc wall and the cooperation of arc slider can freely shrink, when the number of users is less, through the movable plate of pulling backup pad both sides, enlarge the scope of single station, when using the number of people more, the shrink movable plate can add new station, can put work books and instrument etc. on the surface of movable plate simultaneously, promote space utilization, when realizing that most personnel work, avoid leading to emergency can't withdraw fast in the inboard official working of workstation.

(2) The device uses through the cooperation of parts such as pull rod, briquetting and pin, upwards stimulates the pull rod, makes the briquetting remove the support to the pin, and two pin relative movement at this moment remove the joint state between baffle and the movable plate, press down the baffle after that and can make inside the baffle slided into the supporting leg, and easy operation is convenient, is convenient for use in the official working under the different situation.

(3) The device uses through the cooperation of parts such as gyro wheel, gag lever post and push rod, upwards lifts the supporting leg, and reset spring supports to press the connecting block and moves down and make the gyro wheel shift out the supporting leg lower part and conveniently remove this moment, through supporting pressing the push rod, makes the push rod drive the gag lever post and removes gag lever post and supporting leg joint state, and the gravity on supporting leg upper portion supports to press the gyro wheel and receives movable inslot portion this moment, makes the supporting leg support movable plate and backup pad, convenient to use, and the practicality is strong.

Drawings

FIG. 1 is a top view of the overall structure of the present invention;

FIG. 2 is a bottom view of the position of the support plate and the moving plate of the present invention;

FIG. 3 is a front cross-sectional view of the position of the moving plate and support leg of the present invention;

FIG. 4 is an enlarged view of the invention at location A of FIG. 3;

FIG. 5 is an enlarged view of the invention at position B of FIG. 3;

FIG. 6 is a cross-sectional view of the position of the arcuate slot and arcuate slider of the present invention.

In the figure: 1, supporting a plate; 2, moving the board; 3, an adjusting mechanism; 301 an arc-shaped slot; 302 arc-shaped sliding blocks; 303 a spring locking bar; 304 lock holes; 4, supporting legs; 5, a telescopic mechanism; 501 moving a slot; 502 a baffle plate; 503 a limit groove; 504 a pull rod; 505, briquetting; 506 compressing the spring; 507 pin rods; 508 pin holes; 509 a placing groove; 6, a moving mechanism; 601 a movable groove; 602 connecting a block; 603 a return spring; 604 a roller; 605 a limiting rod; 606 push the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a multi-functional environmental protection work platform is used in electronic commerce, includes backup pad 1, and the left and right sides symmetry swing joint of backup pad 1 has movable plate 2, and swing joint has adjustment mechanism 3 between movable plate 2 and the backup pad 1, and the bottom fixedly connected with supporting leg 4 of movable plate 2 has telescopic machanism 5, and the bottom swing joint of supporting leg 4 has moving mechanism 6 between the upper portion of supporting leg 4 and the movable plate 2. It should be noted that, the workbench is designed into a ring shape through the matching of a plurality of groups of supporting plates 1 and moving plates 2, so that communication is convenient for teams to carry out office work and use.

According to the invention, the adjusting mechanism 3 comprises two arc-shaped grooves 301, the two arc-shaped grooves 301 are symmetrically arranged on the left side and the right side of the supporting plate 1, the front end and the rear end of the moving plate 2 are fixedly connected with arc-shaped sliding blocks 302, the two moving plates 2 are respectively connected inside the two arc-shaped grooves 301 in a sliding manner through the arc-shaped sliding blocks 302, the bottom of the supporting plate 1 is symmetrically and movably connected with spring locking rods 303, and the bottom of each moving plate 2 is provided with a locking hole 304 matched with the adjacent spring locking rod 303. It should be noted that the plurality of locking holes 304 are equidistantly formed along the circumferential direction of the moving plate 2, so that different positions of the moving plate 2 and the supporting plate 1 can be adjusted conveniently.

In the invention, the side wall of the arc-shaped sliding block 302 is movably connected with a ball, and one side of the ball is lapped on the inner wall of the arc-shaped groove 301.

In the invention, the telescopic mechanism 5 comprises a moving groove 501, the moving groove 501 is arranged on one side of the moving plate 2, a baffle plate 502 is movably connected inside the moving groove 501, a limit groove 503 is arranged on the lower part of the baffle plate 502, a pull rod 504 is movably connected in the middle of the baffle plate 502, a press block 505 is fixedly sleeved on the lower part of the pull rod 504, a compression spring 506 is movably connected between the top of the press block 505 and the inner top surface of the limit groove 503, pin rods 507 matched with the press block 505 are movably connected on two sides of the limit groove 503, pin holes 508 matched with the pin rods 507 are symmetrically arranged on two sides of the inner wall of the moving groove 501, and a placing groove 509 matched with the moving plate 2. It should be noted that a handle is fixedly connected to the top of the pull rod 504, and when the handle is overlapped on the top of the baffle 502, the press block 505 sleeved on the lower portion of the pull rod 504 presses the two pin rods 507 to be inserted into the corresponding pin holes 508.

In the invention, guide grooves are symmetrically formed in the front side and the rear side of the placing groove 509, guide blocks matched with the two guide grooves are fixedly connected to the front side and the rear side of the moving plate 2, and a rubber pad is fixedly connected to the bottom of the placing groove 509. It should be noted that the side wall of the guide block is movably connected with a steel ball matched with the guide groove, so as to reduce the friction resistance of the baffle 502 during the moving process.

In the invention, pin grooves are symmetrically formed in the lower part of the moving plate 2, two pin rods 507 are movably inserted into the two pin grooves respectively, positioning blocks are fixedly sleeved on the surfaces of the pin rods 507, short springs are movably connected between the side walls of the positioning blocks and the inner walls of the adjacent pin grooves, the opposite ends of the two pin rods 507 are both arc surfaces, and the tops of the opposite ends of the two pin rods 507 are both inclined surfaces. The side wall of the pressing block 505 is an arc-shaped surface, so that friction between the pressing block 505 and the pin 507 is reduced, and the service life of the pressing block 505 is prolonged.

In the invention, the moving mechanism 6 comprises a moving groove 601, the moving groove 601 is arranged at the bottom of the supporting leg 4, the inside of the moving groove 601 is slidably connected with a connecting block 602, a return spring 603 is fixedly connected between the top of the connecting block 602 and the inner top surface of the sliding groove, the bottom of the connecting block 602 is movably connected with a roller 604, one side of the connecting block 602 is movably connected with a limiting rod 605, and the side wall of the supporting leg 4 is movably connected with a push rod 606 matched with the limiting rod 605. It should be noted that, the opposite sides of the limit rod 605 and the push rod 606 are both set to be arc-shaped surfaces, so that when the limit rod 605 slides on the inner wall of the movable groove 601, friction can be effectively reduced.

s1, when the number of stations between the working platforms needs to be adjusted, firstly, the spring lock rod 303 is pulled, at the moment, the spring lock rod 303 and the lock hole 304 are in a clamping state, then the movable plates 2 on two sides of the support plate 1 are respectively pulled outwards, the arc-shaped slide blocks 302 fixedly connected to the movable plates 2 are matched with the arc-shaped grooves 301 formed in the support plate 1 to slide, the range of a single station is enlarged, the working platforms are convenient to use when the number of people is small, resource waste caused by idle platform space is avoided, meanwhile, working books, tools and the like can be placed on the surface of the movable plates 2, and the space utilization rate is improved.

S2, when too many users are used, the two moving plates 2 slide towards the inside of the supporting plate 1 by pulling the spring locking rods 303, the range of a single station is reduced, new stations are added for working conveniently, the working platform stations are adjusted randomly, and the annular working is convenient for team communication to improve the working efficiency.

S3, when an office meeting needs to be held in the office process, the pull rod 504 is pulled upwards, the press block 505 fixedly sleeved on the lower portion of the pull rod 504 releases the pressing on the two pin rods 507, the two pin rods 507 move relatively to release the limiting state between the baffle 502 and the moving plate 2, then the baffle 502 is pressed downwards, the baffle 502 slides towards the inside of the placing groove 509 formed in the upper portion of the supporting leg 4, the baffle 502 is folded, and team personnel can communicate conveniently in the meeting process.

S4, when the baffle 502 needs to be lifted, the baffle 502 is driven to stretch out of the placing groove 509 by pulling the pull rod 504, after the baffle 502 is lifted to a certain height, the pull rod 504 is loosened, the pull rod 504 is compressed by the compression spring 506 to move down to push the two pin rods 507 to move back and forth, the two pin rods 507 are clamped in the two adjacent pin holes 508, the baffle 502 is limited and supported, the operation is simple and convenient, and office use under different conditions is facilitated.

S5, when the working platform needs to be moved, the supporting leg 4 is lifted upwards, the reset spring 603 presses the connecting block 602 to move downwards, so that the roller 604 moves out of the lower part of the supporting leg 4 to be moved conveniently, when the working platform needs to be supported, the push rod 606 drives the limiting rod 605 to move to remove the clamping state of the limiting rod 605 and the supporting leg 4, at the moment, the gravity on the upper part of the supporting leg 4 presses the roller 604 to retract into the movable groove 601, so that the supporting leg 4 supports the moving plate 2 and the supporting plate 1, the use is convenient, and the practicability is high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electronic commerce is with multi-functional environmental protection work platform, includes backup pad (1), its characterized in that: the utility model discloses a supporting plate, including backup pad (1), movable plate (2), swing joint have adjustment mechanism (3) between movable plate (2) and backup pad (1), the bottom fixedly connected with supporting leg (4) of movable plate (2), swing joint has telescopic machanism (5) between the upper portion of supporting leg (4) and movable plate (2), the bottom swing joint of supporting leg (4) has moving mechanism (6).

2. The multifunctional environment-friendly working platform for electronic commerce according to claim 1, characterized in that: the adjusting mechanism (3) comprises two arc-shaped grooves (301), the two arc-shaped grooves (301) are symmetrically arranged on the left side and the right side of the supporting plate (1), arc-shaped sliding blocks (302) are fixedly connected to the front end and the rear end of the moving plate (2), and the two moving plates (2) are respectively connected to the insides of the two arc-shaped grooves (301) in a sliding mode through the arc-shaped sliding blocks (302);

the bottom of the supporting plate (1) is symmetrically and movably connected with spring lock rods (303), and lock holes (304) matched with the adjacent spring lock rods (303) are formed in the bottom of the moving plate (2).

3. The multifunctional environment-friendly working platform for electronic commerce according to claim 2, characterized in that: the side wall of the arc-shaped sliding block (302) is movably connected with a ball, and one side of the ball is lapped on the inner wall of the arc-shaped groove (301).

4. The multifunctional environment-friendly working platform for electronic commerce according to claim 1, characterized in that: the telescopic mechanism (5) comprises a moving groove (501), the moving groove (501) is formed in one side of the moving plate (2), a baffle (502) is movably connected inside the moving groove (501), a limiting groove (503) is formed in the lower portion of the baffle (502), a pull rod (504) is movably connected to the middle of the baffle (502), a pressing block (505) is fixedly sleeved on the lower portion of the pull rod (504), and a compression spring (506) is movably connected between the top of the pressing block (505) and the inner top surface of the limiting groove (503);

the two sides of the limiting groove (503) are movably connected with pin rods (507) matched with the pressing block (505), pin holes (508) matched with the pin rods (507) are symmetrically formed in the two sides of the inner wall of the moving groove (501), and a placing groove (509) matched with the moving plate (2) is formed in the top of the supporting leg (4).

5. The multifunctional environment-friendly working platform for electronic commerce according to claim 4, characterized in that: guide grooves are symmetrically formed in the front side and the rear side of the placing groove (509), guide blocks matched with the two guide grooves are fixedly connected to the front side and the rear side of the moving plate (2), and rubber pads are fixedly connected to the bottom of the placing groove (509).

6. The multifunctional environment-friendly working platform for electronic commerce according to claim 4, characterized in that: the lower part of the moving plate (2) is symmetrically provided with pin grooves, the two pin rods (507) are movably inserted into the two pin grooves respectively, the surfaces of the pin rods (507) are fixedly sleeved with positioning blocks, short springs are movably connected between the side walls of the positioning blocks and the inner walls of the adjacent pin grooves, the two opposite ends of the pin rods (507) are both designed to be arc surfaces, and the tops of the two opposite ends of the pin rods (507) are both designed to be inclined surfaces.

7. The multifunctional environment-friendly working platform for electronic commerce according to claim 1, characterized in that: moving mechanism (6) are including activity groove (601), the bottom at supporting leg (4) is seted up in activity groove (601), the inside sliding connection of activity groove (601) has connecting block (602), fixedly connected with reset spring (603) between the top of connecting block (602) and the interior top surface of sliding tray, the bottom swing joint of connecting block (602) has gyro wheel (604), one side swing joint of connecting block (602) has gag lever post (605), the lateral wall swing joint of supporting leg (4) has with gag lever post (605) matched with push rod (606).

8. The method as claimed in claim 1, wherein the method comprises the steps of: the method comprises the following steps:

s1, when the number of stations between the working platforms needs to be adjusted, the spring lock rod (303) is pulled firstly, the spring lock rod (303) and the lock hole (304) are released from a clamping state, then the movable plates (2) on the two sides of the support plate (1) are pulled outwards respectively, and the arc-shaped sliding blocks (302) fixedly connected to the movable plates (2) are matched with the arc-shaped grooves (301) formed in the support plate (1) to slide, so that the range of a single station is enlarged, the working platforms are convenient to use when the number of people is small, resource waste caused by idle platform space is avoided, meanwhile, working books, tools and the like can be placed on the surfaces of the movable plates (2), and the space utilization rate is improved;

s2, when too many users are used, the two moving plates (2) slide towards the inside of the supporting plate (1) by pulling the spring locking rods (303), the range of a single station is reduced, new stations are added for office work, the stations of the working platform can be adjusted randomly, and the annular office work is convenient for teams to communicate and improve the office efficiency;

s3, when an office meeting needs to be held in the office process, the pull rod (504) is pulled upwards, the press block (505) fixedly sleeved on the lower portion of the pull rod (504) releases the pressing on the two pin rods (507), the two pin rods (507) move relatively to release the limiting state between the baffle (502) and the moving plate (2), then the baffle (502) is pressed downwards, the baffle (502) slides towards the inside of the placing groove (509) formed in the upper portion of the supporting leg (4), and the baffle (502) is folded, so that team personnel can communicate conveniently in the meeting process;

s4, when the baffle plate (502) needs to be lifted, the baffle plate (502) is driven to extend out of the inside of the placing groove (509) by pulling the pull rod (504), after the baffle plate is lifted to a certain height, the pull rod (504) is loosened, the pull rod (504) is compressed by the compression spring (506) to move downwards to push the two pin rods (507) to move back to back, so that the two pin rods (507) are clamped inside the two adjacent pin holes (508), the baffle plate (502) is limited and supported, the operation is simple and convenient, and office use under different conditions is facilitated;

s5, when the working platform needs to be moved, the supporting leg (4) is lifted upwards, at the moment, the reset spring (603) supports the pressing connecting block (602) to move downwards to enable the roller (604) to move out of the lower part of the supporting leg (4) to be convenient to move, when the supporting is needed, the push rod (606) is supported to drive the limiting rod (605) to move to remove the clamping state of the limiting rod (605) and the supporting leg (4), at the moment, the gravity on the upper part of the supporting leg (4) supports the roller (604) to be retracted into the movable groove (601), the supporting leg (4) supports the movable plate (2) and the supporting plate (1), the use is convenient, and the practicability is strong.