CN113876113B - Electrician and electronics practical training examination device with extensible workbench - Google Patents

Electrician and electronics practical training examination device with extensible workbench Download PDF

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Publication number
CN113876113B
CN113876113B CN202111206779.9A CN202111206779A CN113876113B CN 113876113 B CN113876113 B CN 113876113B CN 202111206779 A CN202111206779 A CN 202111206779A CN 113876113 B CN113876113 B CN 113876113B
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China
Prior art keywords
fixed
rod
electrician
workbench
sliding rack
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CN202111206779.9A
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Chinese (zh)
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CN113876113A (en
Inventor
樊海红
陈景贤
肖伟宏
武琰
李一峰
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Guangdong Ocean University
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Guangdong Ocean University
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B1/00—Extensible tables
    • A47B1/02—Extensible tables with insertable leaves arranged in the centre and fixed frames
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B13/00—Details of tables or desks
    • A47B13/08—Table tops; Rims therefor
    • A47B13/081—Movable, extending, sliding table tops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B13/00—Details of tables or desks
    • A47B13/08—Table tops; Rims therefor
    • A47B13/088—Sectional table tops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B37/00—Tables adapted for other particular purposes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/90—Constructional details of drawers
    • A47B88/919—Accessories or additional elements for drawers, e.g. drawer lighting
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism

Abstract

The invention discloses an electrician and electronic training examination device with an extensible workbench, which comprises a workbench body stably arranged on the ground through a support column, wherein a storage box is arranged inside the workbench body; further comprising: the utility model discloses an electrician's electron practical training examination device with extensible workstation, including deposit case, fixed handle of being provided with in the outside middle part position of depositing the case, the fixed inboard at the standing groove is fixed to the dead lever, the inside on standing groove top is fixed at the both ends of dead lever, the outside of dead lever is connected with the inner wall of standing groove through the vortex spring, this electrician's electron practical training examination device with extensible workstation is provided with and deposits the case, and then makes and deposits the case and will remove through the gyro wheel, and the sliding rack will drive the fixed gear and rotate, and the ejector pin will remove in the inside of spacing groove through the stopper, make the extension board will remove in the inside of standing groove, and then reach the purpose that the desktop extended, so that place test instrument on the workstation body.

Description

Electrician and electronics practical training examination device with extensible workbench
Technical Field
The invention relates to the technical field of electrician and electronic training examination, in particular to an electrician and electronic training examination device with an extensible workbench.
Background
Electrician and electronics are subjects who cultivate basic knowledge with electronic technology and electrical engineering, and in order to meet the needs of education reformation and development and to be convenient for cultivating technical skill talents, an electrician and electronics training examination device and a new generation examination device designed for examining and identifying the actual situation need to be used for judgment, and the types of the electrician and electronics training examination devices in the market are various, but certain defects exist:
the publication No. CN212061517U discloses an electrical practical training examination device, which can avoid inconvenience in operation caused by inconvenience in blowing, heat dissipation and dust cleaning when the electrical practical training examination device is used in summer and dust falls into the surface of the device by designing a mounting seat at the end part of a flexible rod and designing a motor and fan blades in the mounting seat, and can clean the surface of the device body by the same operation when the dust falls into the upper surface of the device body, so that the device is convenient to use, and the problems that inconvenience in blowing, heat dissipation and dust cleaning are caused when the device is used in summer are solved; although the device can improve the comfort level of examinee in the use, but at the in-process of carrying out the examination to the examinee is carrying out the in-process of examining, need place the workstation body with some test instruments of electrician's electron on, this examination device's workstation body undersize, inconvenient extends the desktop, and the practical training question that the teacher went out simultaneously also can make the examinee copy each other easily and cheat.
Therefore, we propose an electrical and electronic training assessment device with an extensible workbench so as to solve the problems proposed in the above.
Disclosure of Invention
The invention aims to provide an electrician and electronic training and examining device with an extensible workbench, and aims to solve the problems that the electrician and electronic training and examining device in the market needs to place some test instruments of electricians and electronics on a workbench body, the workbench body of the examining device is too small to conveniently extend a desktop, and examinees are easy to mutually copy and cheat due to training questions given by teachers.
In order to achieve the purpose, the invention provides the following technical scheme: an electrician and electronic training and examining device with an extensible workbench comprises a workbench body which is stably arranged on the ground through a support column, and a training and examining device body which is used as an examinee using device;
the left side and the right side of one surface of the workbench body are respectively provided with a storage box, and the storage boxes are arranged inside the workbench body;
the left end and the right end of the workbench body are both provided with a placing groove, and an extension plate is arranged in the placing groove;
further comprising:
a pull handle is fixedly arranged in the middle of the outer side of the storage box, a pull ring is arranged on the inner side of the pull handle, the rear end of the pull ring is connected with one end of the inner side of the pull handle through a connecting spring, first traction ropes are connected to two sides of the rear end of the pull ring, the other end of each first traction rope is connected to the left side and the right side of the bottom end of a sliding rack through a pulley, and the inner sides of the front end and the rear end of the sliding rack are arranged on the outer sides of the fixed guide rods;
the left upper end of extension board is fixed with the connecting block, just the inboard setting of connecting block is in the inside of dead lever, the inboard at the standing groove is fixed to the dead lever, the inside on standing groove top is fixed at the both ends of dead lever, the outside of dead lever is connected with the inner wall of standing groove through vortex spring.
Preferably, the sliding rack is arranged on the inner side of the left end of the storage box, and the sliding rack and the inner side of the left end of the storage box form a lifting structure through the fixed guide rod, so that the sliding rack is conveniently controlled to be meshed with the fixed gear.
Preferably, the bottom of depositing the case is provided with the gyro wheel at equidistant, deposit the case and pass through to constitute sliding construction between the inside of gyro wheel and workstation body, and then conveniently deposit the case and slide in the inside of workstation body.
Preferably, the below of slip rack is provided with fixed gear, fixed gear's axle head nestification is in the left end of bull stick, the inboard of bull stick right-hand member is provided with the threaded rod, the outside at the ejector pin is connected to the right-hand member of threaded rod, both ends are fixed with the stopper around the ejector pin, just the other end of stopper stretches into the inside of spacing groove, through above setting, and then makes things convenient for the threaded rod to drive the ejector pin and removes.
Preferably, be clearance fit between the inner wall of spacing groove and the outer wall of stopper, be integrated structure between the front and back both ends of stopper and ejector pin, and then make things convenient for the ejector pin to carry out stable slip through the stopper.
Preferably, threaded connection is adopted between the outer side of the threaded rod and the inner side of the rotating rod, the other end of the ejector rod extends into the placing groove and is arranged corresponding to one side of the extending plate, the fixed gear is meshed with the sliding rack, and the sliding rack drives the fixed gear to rotate conveniently.
Preferably, the outside of extension board is provided with fixed lagging, just the inside of fixed lagging is provided with sliding baffle, the top at both ends is provided with the fixed pulley about the real standard examination device body, just the one end winding of fixed pulley has the second haulage rope, the other end of second haulage rope stretches into sliding baffle's inside and is connected with the outside of connecting axle, the one end of connecting axle is connected with sliding baffle's inside through torsion spring, just the other end of connecting axle is fixed with the fan body, and through the above setting, and then conveniently the extension board extends, makes things convenient for the examinee to place the test instrument on the workstation body.
Preferably, the fan body forms a rotating structure through the connection shaft and the inner wall of the sliding baffle, and a bearing at one end of the connection shaft is connected to the inner wall of the sliding baffle, so that the connection shaft rotates on the inner wall of the sliding baffle.
Preferably, the sliding baffle passes through and constitutes elevation structure between the inside of second haulage rope and fixed lagging, just be fixed connection between fixed lagging and the extension board, but this setting makes things convenient for sliding baffle to prevent that the examinee from carrying out the cheating of easily plagiarizing each other.
Compared with the prior art, the invention has the beneficial effects that: the electrician and electronic training assessment device with the extensible workbench; by extruding the pull ring, the pull ring drives the first traction rope to move through the connecting spring, so that the first traction rope drives the sliding rack to slide on the outer side of the fixed guide rod, and the sliding rack is conveniently meshed with the fixed gear;
1. the storage box is arranged and can be moved through the idler wheels by pulling the storage box, the sliding rack can drive the fixed gear to rotate, the rotating rod can rotate through the fixed gear, the rotating rod can drive the ejector rod to move through the threaded rod, the ejector rod can move inside the limiting groove through the limiting block, the ejector rod can extrude the extension plate, the extension plate can move inside the placing groove, and the purpose of desktop extension is achieved through the arrangement, so that a test instrument can be placed on the workbench body;
2. be provided with slide damper, move the in-process through the extension board, the extension board will drive fixed lagging and remove, because the one end of second haulage rope is connected in the one end of fixed pulley, and the other end of second haulage rope stretches into slide damper's inside and be connected with the connecting axle, and then make the connecting axle will drive the fan body and rotate, after the second haulage rope removes the certain degree, the second haulage rope will drive slide damper and remove in fixed lagging 24's inside, through above setting, and then make things convenient for slide damper will prevent that the examinee from plagiarizing the cheating each other, the convenient dust in the clean the device outside simultaneously.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic left side sectional view of the storage case of the present invention;
FIG. 3 is a schematic perspective view of the storage case of the present invention;
FIG. 4 is a schematic top sectional view of the storage case of the present invention;
FIG. 5 is an enlarged view of a portion a of FIG. 4 according to the present invention;
FIG. 6 is an enlarged view of the structure at b in FIG. 1 according to the present invention;
FIG. 7 is a schematic sectional front view of the slide damper according to the present invention;
FIG. 8 is a left side sectional view of the connecting shaft of the present invention.
In the figure: 1. a table body; 2. a training assessment device body; 3. a storage box; 301. a roller; 4. a handle; 5. a pull ring; 6. a connecting spring; 7. a first pull cord; 8. a sliding rack; 9. fixing a guide rod; 10. fixing a gear; 11. a rotating rod; 12. a threaded rod; 13. a top rod; 14. a limiting block; 15. a limiting groove; 16. a placement groove; 17. an extension plate; 18. connecting blocks; 19. fixing the rod; 20. a scroll spring; 21. a fixed pulley; 22. a second pull cord; 23. a slide damper; 24. fixing the sleeve plate; 25. a connecting shaft; 26. a torsion spring; 27. a fan body.
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 embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: an electrician and electronics training and examining device with an extensible workbench comprises: the practical training assessment device comprises a workbench body 1, a practical training assessment device body 2, a storage box 3, rollers 301, a handle 4, a pull ring 5, a connecting spring 6, a first traction rope 7, a sliding rack 8, a fixed guide rod 9, a fixed gear 10, a rotating rod 11, a threaded rod 12, a push rod 13, a limiting block 14, a limiting groove 15, a placing groove 16, an extension plate 17, a connecting block 18, a fixed rod 19, a vortex spring 20, a fixed pulley 21, a second traction rope 22, a sliding baffle plate 23, a fixed sleeve plate 24, a connecting shaft 25, a torsion spring 26 and a fan body 27;
the device comprises a worktable body 1 which is stably arranged on the ground through a support column and a training assessment device body 2 which is used as an examinee using device;
the left side and the right side of one surface of the workbench body 1 are both provided with the storage boxes 3, and the storage boxes 3 are arranged inside the workbench body 1;
the left end and the right end of the workbench body 1 are both provided with a placing groove 16, and an extension plate 17 is arranged inside the placing groove 16;
further comprising:
a pull handle 4 is fixedly arranged at the middle position of the outer side of the storage box 3, a pull ring 5 is arranged on the inner side of the pull handle 4, the rear end of the pull ring 5 is connected with one end of the inner side of the pull handle 4 through a connecting spring 6, two sides of the rear end of the pull ring 5 are connected with first traction ropes 7, the other end of each first traction rope 7 is connected to the left side and the right side of the bottom end of a sliding rack 8 through pulleys, and the inner sides of the front end and the rear end of the sliding rack 8 are arranged on the outer side of a fixed guide rod 9;
firstly, a user places a hand inside the handle 4, and the handle 4 holds the pull ring 5 by hand, so that the pull ring 5 will drive the connecting spring 6 to move, since the other end of the connecting spring 6 is connected inside the handle 4, and meanwhile, in the moving process of the pull ring 5, the pull ring 5 will drive the first traction rope 7 to move, since the other end of the first traction rope 7 is connected to two sides of the bottom end of the sliding rack 8, and the sliding rack 8 will be connected to the outer side of the fixed guide rod 9, after the sliding rack 8 moves for a certain position, the sliding rack 8 will enable the fixed gear 10 to be meshed, and in the process of loosening the pull ring 5, the sliding rack 8 will be meshed with the fixed gear 10 by the elastic force of the connecting spring 6,
the upper end of the left side of the extension plate 17 is fixed with a connecting block 18, the inner side of the connecting block 18 is arranged in a fixing rod 19, the fixing rod 19 is fixed in the inner side of the placing groove 16, the two ends of the fixing rod 19 are fixed in the top end of the placing groove 16, and the outer side of the fixing rod 19 is connected with the inner wall of the placing groove 16 through a vortex spring 20.
The sliding rack 8 is arranged on the inner side of the left end of the storage box 3, and the sliding rack 8 forms a lifting structure with the inner side of the left end of the storage box 3 through the fixed guide rod 9.
The bottom of the storage box 3 is provided with rollers 301 at equal intervals, and the storage box 3 forms a sliding structure with the inside of the workbench body 1 through the rollers 301.
The fixed gear 10 is arranged below the sliding rack 8, the shaft end of the fixed gear 10 is nested at the left end of the rotating rod 11, a threaded rod 12 is arranged on the inner side of the right end of the rotating rod 11, the right end of the threaded rod 12 is connected to the outer side of the ejector rod 13, a limiting block 14 is fixed to the front end and the rear end of the ejector rod 13, and the other end of the limiting block 14 extends into the limiting groove 15.
The inner wall of the limiting groove 15 is in clearance fit with the outer wall of the limiting block 14, and the limiting block 14 and the front end and the rear end of the ejector rod 13 are of an integrated structure.
The outer side of the threaded rod 12 is in threaded connection with the inner side of the rotating rod 11, the other end of the ejector rod 13 extends into the placing groove 16 and is arranged corresponding to one side of the extending plate 17, and the fixed gear 10 is in meshed connection with the sliding rack 8.
The storage compartment 3 is then drawn again, so that the storage compartment 3 will be moved by the rollers 301, and the sliding rack 8 will bring the fixed gear 10 to rotate, so that the fixed gear 10 will bring the rotary rod 11 to rotate, meanwhile, the rotating rod 11 drives the threaded rod 12 connected with the thread to rotate, and the other end of the threaded rod 12 is fixed with an ejector rod 13, since the front and rear sides of the top rod 13 extend into the limit groove 15 through the limit block 14, when the rotating rod 11 rotates, the rotating rod 11 will bring the top bar 13 to move in the placing groove 16, so that the push rod 13 will press the extension plate 17, so that the extension plate 17 will move on the fixing rod 19 through the connection block 18, while the scroll spring 20 will perform a certain compression, by which, and then make things convenient for the device to extend to place the test instrument on workstation body 1.
The outside of extension board 17 is provided with fixed lagging 24, and the inside of fixed lagging 24 is provided with slide damper 23, the top at both ends is provided with fixed pulley 21 about real standard examination device body 2, and the one end winding of fixed pulley 21 has second haulage rope 22, the other end of second haulage rope 22 stretches into slide damper 23's inside and is connected with the outside of connecting axle 25, the one end of connecting axle 25 is connected with slide damper 23's inside through torsion spring 26, and the other end of connecting axle 25 is fixed with fan body 27.
The fan body 27 forms a rotating structure with the inner wall of the slide damper 23 through the connecting shaft 25, and one end of the connecting shaft 25 is bearing-connected with the inner wall of the slide damper 23.
When extension board 17 carries out the in-process that removes, extension board 17 will drive fixed lagging 24 and remove, second haulage rope 22 will stretch into the inside of sliding baffle 23 through fixed pulley 21, and the other end of second haulage rope 22 will drive connecting axle 25 and rotate, and connecting axle 25 will drive fan body 27 and rotate, after second haulage rope 22 loosened the certain degree, second haulage rope 22 will drive sliding baffle 23 and drive the inside of fixed lagging 24 and slide, through above setting, and then make things convenient for fixed lagging 24 to rise, and the convenience carries out certain cleanness to the dust in the device outside.
The sliding baffle 23 forms a lifting structure with the inside of the fixed sleeve plate 24 through the second traction rope 22, and the fixed sleeve plate 24 is fixedly connected with the extension plate 17.
The working principle is as follows: when the electrician and electronic practical training examination device with the extensible workbench is used, firstly, a user places a hand inside the pull handle 4, the pull handle 4 holds the pull ring 5 by hand, so that the pull ring 5 can drive the connecting spring 6 to move, meanwhile, in the moving process of the pull ring 5, the pull ring 5 can drive the first traction rope 7 to move, and after the sliding rack 8 moves for a certain position, the sliding rack 8 and the fixed gear 10 are not meshed through the elastic force of the connecting spring 6; then, the storage box 3 is pulled, so that the storage box 3 can move through the idler wheel 301, the sliding rack 8 can drive the fixed gear 10 to rotate, the fixed gear 10 can drive the rotating rod 11 to rotate, meanwhile, the rotating rod 11 can drive the threaded rod 12 in threaded connection to rotate, in the rotating process of the rotating rod 11, the rotating rod 11 can drive the ejector rod 13 to move inside the placing groove 16, the ejector rod 13 can extrude the extension plate 17, the extension plate 17 can move on the fixed rod 19 through the connecting block 18, and meanwhile, the vortex spring 20 can be compressed to a certain extent, so that the device can be conveniently extended to place a test instrument on the workbench body 1; when extension plate 17 carries out the in-process that removes, extension plate 17 will drive fixed lagging 24 and remove, second haulage rope 22 will stretch into the inside of sliding baffle 23 through fixed pulley 21, and the other end of second haulage rope 22 will drive connecting axle 25 and rotate, and connecting axle 25 will drive fan body 27 and rotate, after second haulage rope 22 loosened the certain degree, second haulage rope 22 will drive sliding baffle 23 and drive the inside of fixed lagging 24 and slide, and then make things convenient for fixed lagging 24 to rise, and the convenient dust to the device outside carries out certain cleanness, thereby accomplish a series of work.
Those not described in detail in this specification are prior art well known to those skilled in the art, and in the description of the present invention, "plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (4)

1. An electrician and electronic training and examining device with an extensible workbench comprises a workbench body (1) which is stably arranged on the ground through a support column, and a training and examining device body (2) which is used as an examinee using device;
the left side and the right side of one surface of the workbench body (1) are respectively provided with a storage box (3), and the storage boxes (3) are arranged inside the workbench body (1);
placing grooves (16) are formed in the left end and the right end of the workbench body (1), and extension plates (17) are arranged in the placing grooves (16);
the method is characterized in that: further comprising:
a handle (4) is fixedly arranged in the middle of the outer side of the storage box (3), a pull ring (5) is arranged on the inner side of the handle (4), the rear end of the pull ring (5) is connected with one end of the inner side of the handle (4) through a connecting spring (6), first traction ropes (7) are connected to two sides of the rear end of the pull ring (5), the other end of each first traction rope (7) is connected to the left side and the right side of the bottom end of a sliding rack (8) through a pulley, and the inner sides of the front end and the rear end of each sliding rack (8) are arranged on the outer side of a fixed guide rod (9);
a connecting block (18) is fixed at the upper end of the left side of the extending plate (17), the inner side of the connecting block (18) is arranged inside a fixing rod (19), the fixing rod (19) is fixed on the inner side of the placing groove (16), two ends of the fixing rod (19) are fixed inside the top end of the placing groove (16), and the outer side of the fixing rod (19) is connected with the inner wall of the placing groove (16) through a vortex spring (20);
the sliding rack (8) is arranged on the inner side of the left end of the storage box (3), and a lifting structure is formed between the sliding rack (8) and the inner side of the left end of the storage box (3) through a fixed guide rod (9);
the bottom of the storage box (3) is provided with rollers (301) at equal intervals, and the storage box (3) and the inside of the workbench body (1) form a sliding structure through the rollers (301);
a fixed gear (10) is arranged below the sliding rack (8), the shaft end of the fixed gear (10) is nested at the left end of the rotating rod (11), a threaded rod (12) is arranged on the inner side of the right end of the rotating rod (11), the right end of the threaded rod (12) is connected to the outer side of the ejector rod (13), limiting blocks (14) are fixed to the front end and the rear end of the ejector rod (13), and the other ends of the limiting blocks (14) extend into the limiting grooves (15);
the inner wall of the limiting groove (15) is in clearance fit with the outer wall of the limiting block (14), and the limiting block (14) and the front end and the rear end of the ejector rod (13) are of an integrated structure;
the outer side of the threaded rod (12) is in threaded connection with the inner side of the rotating rod (11), the other end of the ejector rod (13) extends into the placing groove (16) and is arranged corresponding to one side of the extending plate (17), and the fixed gear (10) is in meshed connection with the sliding rack (8).
2. The electrician and electronics practical training assessment device with the extensible workbench according to claim 1, characterized in that: the outside of extension board (17) is provided with fixed lagging (24), just the inside of fixed lagging (24) is provided with slide damper (23), the top at both ends is provided with fixed pulley (21) about real standard examination device body (2), just the one end winding of fixed pulley (21) has second haulage rope (22), the other end of second haulage rope (22) stretches into the inside of slide damper (23) and is connected with the outside of connecting axle (25), the one end of connecting axle (25) is connected with the inside of slide damper (23) through torsion spring (26), just the other end of connecting axle (25) is fixed with fan body (27).
3. The electrician and electronics practical training assessment device with the extensible workbench according to claim 2, characterized in that: the fan body (27) forms a rotating structure with the inner wall of the sliding baffle plate (23) through a connecting shaft (25), and one end of the connecting shaft (25) is connected to the inner wall of the sliding baffle plate (23) through a bearing.
4. The electrician and electronics practical training assessment device with the extensible workbench according to claim 2, characterized in that: the sliding baffle (23) forms a lifting structure through the second traction rope (22) and the inside of the fixed sleeve plate (24), and the fixed sleeve plate (24) is fixedly connected with the extension plate (17).
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