CN112841873A

CN112841873A - Experiment table for intelligent experiment operation skill evaluation

Info

Publication number: CN112841873A
Application number: CN202110301575.7A
Authority: CN
Inventors: 石继元
Original assignee: Guangdong Laiboshi Education Equipment Co ltd
Current assignee: Guangdong Laiboshi Education Equipment Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-05-28

Abstract

The invention relates to the technical field of skill evaluation equipment, in particular to an intelligent experiment table for skill evaluation of experiment operation. It has solved the problem that the examinee peered is not convenient for avoid to have the current experiment table. The peeping-proof device comprises a base, a front baffle, a guide groove, a peeping-proof plate, a containing cavity, a rotating shaft, a cover plate, a lifting mechanism, a turnover mechanism and a chain wheel and chain assembly, wherein a bidirectional motor is coaxially arranged on the rotating shaft, and when the peeping-proof plate moves upwards, the cover plate is driven to upwards overturn through the chain wheel and chain assembly. According to the experiment table, the cover plate is driven to upwards overturn through the overturning mechanism, meanwhile, the lifting mechanism is driven to work under the action of the chain wheel and chain assembly, the peep-proof plate is driven to upwards move through the lifting mechanism, the peep-proof plate shields the two sides of a user, and the front side, the left side and the right side of the user are shielded together by combining the front baffle plate, so that the using effect of the experiment table is improved, the examination table is beneficial to avoiding the peeping of examinees, equipment can be stored simultaneously, the application range of the experiment table is widened, and the popularization is facilitated.

Description

Experiment table for intelligent experiment operation skill evaluation

Technical Field

The invention relates to the technical field of skill evaluation equipment, in particular to an intelligent experiment table for skill evaluation of experiment operation.

Background

The mechanical examination refers to an examination using a computer as an examination paper display and answer page. In order to facilitate the examination questions to be viewed by students, computers used in the mechanical examination process are almost erected in front of the students. Thus, although the examination students can conveniently check the examination questions, other students beside and behind the students can also see the answers of the students from the display screens of the computers.

In order to prevent the situation of copying cheating on an examination, the existing cheating prevention device generally comprises an examination table and a computer arranged on the examination table; the computer comprises an examination paper display screen arranged on the desktop of the examination table; the left side and the right side of the examination paper display screen are provided with shielding plates vertically arranged on the periphery of the table top of the examination table. However, the shielding plate is generally difficult to be detached from the examination table, and the shielding plate shields the sight, so that the students cannot watch the blackboard or the demonstration board in the front of the classroom, and the teachers cannot see what the students on the seat do. Although the shielding plate isolates the problem that adjacent examinees check the display screens to copy each other, the shielding plate also blocks the sight of teachers supervising each student, but enables some students to conveniently carry out small actions such as paper slip cheating under the shielding of the shielding plate, and is not beneficial to cheating prevention of the whole examination room.

Consequently, among the current experiment operating skill examination, because student's operation can't avoid other examinees to peep on the test bench, the increase degree of difficulty of invigilating examination, and what do not go on examination laboratory table is the machine examination, still can have a pen to examine, the machine examination equipment still puts on the laboratory table when pen examines, user's usable space has obviously been dwindled, the use of laboratory table has been restricted, need the experiment operating skill of an intelligence to assess and use the laboratory table now, can not only avoid the examinee to peep, but also can accomodate equipment, thereby improve the application scope of laboratory table, and is convenient for popularize.

Disclosure of Invention

The invention provides an intelligent experiment table for evaluating experiment operating skills, which is beneficial to avoiding the peeping of examinees, can accommodate equipment at the same time, improves the application range of the experiment table and is convenient to popularize.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides an experiment operation skill of intelligence is examined and is used experiment table, the on-line screen storage device comprises a base, the front side of base is equipped with preceding baffle, set up two guide slots that are located the both ends of base respectively on the base, every equal sliding fit has the peep-proof board in the guide slot, the top surface of base has been seted up and has been accomodate the chamber, it is equipped with the pivot to accomodate the intracavity, rotate in the pivot and be connected with the lid and locate the apron of accomodating the chamber opening part, be equipped with the elevating system that can drive peep-proof board longitudinal movement on the base, be equipped with the axis pivoted tilting mechanism that can drive the apron revolute the axle on the base, link to each other through sprocket chain subassembly between elevating system and the tilting mechanism, coaxial two-way motor that is provided with in the pivot works as during.

Further, elevating system is including locating rack on the peep-proof board and locating the even axle of accomodating the intracavity, be equipped with lifting gear on even the axle, lifting gear and rack toothing.

Further, the coaxial rotation hole of having seted up in the pivot, link firmly the rotation post on the apron, the both ends normal running fit of rotation post is downthehole, tilting mechanism includes first upset gear, planet wheel and second upset gear, the coaxial setting of first upset gear is in the pivot, the planet hole has been seted up in the centrifugation on the rotation post, planet wheel normal running fit is downthehole in the planet, planet wheel and the meshing of first upset gear, the coaxial setting of second upset gear is on rotating the post, second upset gear axial extends to planet wheel department and keeps away from one side meshing of first upset gear with the planet wheel.

Further, sprocket chain subassembly includes first sprocket, second sprocket and drive chain, first sprocket is coaxial to be linked epaxially, the second sprocket is coaxial to be linked firmly in the pivot and corresponding with first sprocket, the both ends of drive chain are established respectively on first sprocket and second sprocket.

Further, the gear ratio of the first overturning gear to the second overturning gear is 3-7: 1.

Further, the transmission ratio of the first chain wheel to the second chain wheel is 3-5: 1.

Furthermore, a supporting plate is arranged on one side, close to the rotating shaft, of the bottom surface of the cover plate, and the cross section of the supporting plate is J-shaped.

The invention has the beneficial effects that:

1. drive two-way motor and drive the pivot and rotate, drive the apron through tilting mechanism and upwards overturn, and simultaneously, drive elevating system work under sprocket chain assembly's effect, and drive peep-proof board upward movement through elevating system, peep-proof board shelters from user's both sides, baffle before combining, the front side to the user jointly, left side and right side shelter from, the result of use of this experiment table has been improved, do benefit to and avoid the examinee to peep, and can accomodate equipment simultaneously, improve the application scope of experiment table, and convenient to popularize.

2. The bidirectional motor drives the rotating shaft to rotate forwards at first, the rotating shaft and the chain wheel and chain assembly drive the lifting work to drive the peep-proof plate to move upwards, and when the rotating shaft rotates forwards, the cover plate moves downwards along the radial direction of the rotating shaft, and the moving directions of the peep-proof plate and the cover plate are opposite; the rotating shaft rotates forwards and simultaneously drives the second overturning gear to rotate forwards, and the planet wheels are arranged, so that the first overturning gear and the rotating column are driven to rotate backwards due to the fact that the first overturning gear and the second overturning gear rotate in opposite directions, the cover plate is driven to move upwards, the peep-proof plate is driven to move upwards while moving upwards, and finally the rotating shaft is driven to rotate backwards through the bidirectional motor, so that all the components move reversely; the device is convenient for avoid examinee to peep, and the device is used in examination to be stored or arranged, so that the application range of the experiment table is widened.

Drawings

Fig. 1 is a first schematic structural diagram of a laboratory table for laboratory skill evaluation;

FIG. 2 is a schematic structural view of a second experiment table for evaluation of operational skills in an experiment;

FIG. 3 is a schematic structural view of the sprocket chain assembly;

FIG. 4 is a structural cross-sectional view of the base;

FIG. 5 is a structural sectional view of the turnover mechanism;

FIG. 6 is a sectional view showing the structure of the rotary shaft;

description of reference numerals:

1. a base; 2. a front baffle; 3. a guide groove; 4. a peep-proof plate; 5. a receiving cavity; 6. a rotating shaft; 7. a cover plate; 8. a bi-directional motor; 9. a rack; 10. a connecting shaft; 11. a lifting gear; 12. rotating the hole; 13. rotating the column; 14. a first overturning gear; 15. a planet wheel; 16. a second overturning gear; 17. a first sprocket; 18. a second sprocket; 19. a drive chain; 20. and (7) a supporting plate.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

As shown in fig. 1-6, an experimental table for evaluating experimental operating skills of intelligence, including base 1, the front side of base 1 is equipped with preceding baffle 2, base 1 is last to be seted up two guide slots 3 that are located the both ends of base 1 respectively, equal sliding fit has peep-proof plate 4 in every guide slot 3, base 1's top surface has been seted up and has been accomodate chamber 5, it is equipped with pivot 6 in the chamber 5 to accomodate, it locates the apron 7 of accomodating chamber 5 opening part to rotate to be connected with the lid on pivot 6, be equipped with the elevating system that can drive peep-proof plate 4 longitudinal movement on base 1, be equipped with the pivoted tilting mechanism of axis that can drive apron 7 revolute axle 6 on base 1, link to each other through sprocket chain subassembly between elevating system and the tilting mechanism, coaxial double direction motor 8 that is provided with on pivot 6, when peep-proof plate 4 upwards moved, drive apron 7 upwards through.

As shown in fig. 1-6, in this embodiment, when the device is installed, the top surface of the cover plate 7 is flush with the opening of the receiving cavity 5, and the top of the peep-proof plate 4 is flush with the top surface of the base 1, so that the surface of the base 1 is flat, which is beneficial for a user to use; when skill evaluation is carried out, the bidirectional motor 8 is driven and the rotating shaft 6 is driven to rotate, the cover plate 7 is driven to upwards overturn through the overturning mechanism, meanwhile, the lifting mechanism is driven to work under the action of the chain wheel and chain assembly, the peep-proof plate 4 is driven to upwards move through the lifting mechanism, the peep-proof plate 4 shields the two sides of a user, and the front baffle plate 2 is combined to jointly shield the front side, the left side and the right side of the user, so that the using effect of the experiment table is improved; wherein, the peep-proof board 4 and the front baffle 2 are both made of opaque materials, which is beneficial to improving the shielding effect of the experiment table, when the peep-proof board 4 moves upwards in place, the cover plate 7 is overturned around the rotating shaft 6 to be vertical to the base 1, so that the examination equipment is convenient to be placed in the containing cavity 5, because the cover plate 7 is overturned, the opening of the containing cavity 5 can be covered by other articles, the opening of the containing cavity 5 is smooth, which is beneficial to examination of a user, or the equipment in the containing cavity 5 is taken out, the examination articles of the user are placed in the containing cavity 5, the application range of the experiment table is improved, the examination articles of the user are convenient to arrange, the bidirectional motor 8 is driven to overturn after use, the peep-proof board 4 is driven to move downwards into the guide groove 3, and the cover plate 7 is driven to cover the opening of the containing cavity 5, which is beneficial to avoiding peeping of the examinee, and can accomodate equipment simultaneously, improve the application scope of experiment table, facilitate promotion.

As shown in fig. 2, the lifting mechanism includes a rack 9 disposed on the peep-proof plate 4 and a connecting shaft 10 disposed in the accommodating chamber 5, a lifting gear 11 is disposed on the connecting shaft 10, and the lifting gear 11 is engaged with the rack 9.

As shown in fig. 2, in this embodiment, when the bidirectional motor 8 rotates, the chain wheel and chain assembly drives the connecting shaft 10 to rotate, and the lifting gear 11 is driven to move longitudinally under the engagement action of the lifting gear 11 and the rack 9, so as to drive the peep-proof plate 4 to move longitudinally.

As shown in fig. 6, a rotation hole 12 is coaxially formed in the rotation shaft 6, a rotation column 13 is fixedly connected to the cover plate 7, two ends of the rotation column 13 are rotationally matched in the rotation hole 12, as shown in fig. 5, the turnover mechanism includes a first turnover gear 14, a planet wheel 15 and a second turnover gear 16, the first turnover gear 14 is coaxially arranged on the rotation shaft 6, a planet hole is centrifugally formed in the rotation column 13, the planet wheel 15 is rotationally matched in the planet hole, the planet wheel 15 is meshed with the first turnover gear 14, the second turnover gear 16 is coaxially arranged on the rotation column 13, and the second turnover gear 16 axially extends to the planet wheel 15 and is meshed with one side, far away from the first turnover gear 14, of the planet wheel 15.

As shown in fig. 1-6, in this embodiment, the bidirectional motor 8 first drives the rotating shaft 6 to rotate forward, and drives the rotating shaft 6 and the sprocket chain assembly to lift and lower, so as to drive the peep-proof plate 4 to move upward, and when the rotating shaft 6 rotates forward, the cover plate 7 moves downward along the radial direction of the rotating shaft 6, and the moving directions of the peep-proof plate 4 and the cover plate 7 are opposite; the rotating shaft 6 rotates forwards and simultaneously drives the second overturning gear 16 to rotate forwards, and the planet wheel 15 is arranged, so that the first overturning gear 14 and the second overturning gear 16 rotate reversely and drive the first overturning gear 14 and the rotating column 13 to rotate backwards, so that the cover plate 7 is driven to move upwards, the peep-proof plate 4 is driven to move upwards and simultaneously drive the cover plate 7 to move upwards, and finally the rotating shaft 6 is driven to rotate backwards through the bidirectional motor 8, so that all the components move reversely; the device is convenient for avoid examinee to peep, and the device is used in examination to be stored or arranged, so that the application range of the experiment table is widened.

As shown in fig. 3, the sprocket chain assembly includes a first sprocket 17, a second sprocket 18 and a transmission chain 19, the first sprocket 17 is coaxially connected to the connecting shaft 10, the second sprocket 18 is coaxially connected to the rotating shaft 6 and corresponds to the first sprocket 17, and two ends of the transmission chain 19 are respectively sleeved on the first sprocket 17 and the second sprocket 18.

As shown in fig. 1-6, in this example, the gear ratio of the first flipping gear 14 to the second flipping gear 16 is 3-7:1, and the gear ratio of the first sprocket 17 to the second sprocket 18 is 3-5: 1. Because the cover plate 7 is rotationally connected with the rotating shaft 6 through the rotating column 13, the first overturning gear 14 is fixedly connected on the rotating column 13, and the second overturning gear 16 is arranged on the rotating shaft 6, the rotating speed ratio of the rotating shaft 6 to the cover plate 7 is 3-7:1, namely the gear ratio of the first overturning gear 14 to the second overturning gear 16; the lifting gear 11 is meshed with the rack 9, the lifting gear 11 and the rack 9 rotate at a constant speed, the rack 9 and the peep-proof plate 4 rotate at a constant speed, the first chain wheel 17 is fixedly connected to the connecting shaft 10, and the second chain wheel 18 is fixedly connected to the rotating shaft 6, so that the rotating speeds of the first chain wheel 17 and the second chain wheel 18 are equal to the ratio of the rotating speeds of the connecting shaft 10 and the rotating shaft 6, namely the ratio of the rotating speeds of the peep-proof plate 4 and the rotating shaft 6 is 3-5:1, the ratio of the rotation speed of the peep-proof plate 4 to the rotation speed of the cover plate 7 is 9-35: 1, be convenient for remove peep-proof board 4 according to the user demand of reality to when peep-proof board 4 upwards removed and targetting in place, drive apron 7 and accurately rotate to the position perpendicular mutually with base 1, improved experiment table upper cover plate 7's rotation accuracy.

As shown in fig. 4, in this embodiment, a supporting plate 20 is disposed on a side of the bottom surface of the cover plate 7 close to the rotating shaft 6, and the cross section of the supporting plate 20 is J-shaped. When the cover plate 7 rotates to the position vertical to the base 1, the examination equipment is conveniently placed on the supporting plate 20 in the J-shaped structure, and examination related articles are conveniently placed.

All the technical features in the embodiment can be freely combined according to actual needs.

The above embodiments are preferred implementations of the present invention, and other implementations are also included, and any obvious substitutions are within the scope of the present invention without departing from the spirit of the present invention.

Claims

1. An intelligent experiment table for examination and evaluation of experiment operation skills comprises a base (1) and is characterized in that a front baffle (2) is arranged on the front side of the base (1), two guide grooves (3) which are respectively positioned at two ends of the base (1) are formed in the base (1), each guide groove (3) is internally provided with a peep-proof plate (4) in a sliding fit manner, the top surface of the base (1) is provided with a containing cavity (5), a rotating shaft (6) is arranged in the containing cavity (5), a cover plate (7) which is covered at the opening of the containing cavity (5) is rotatably connected on the rotating shaft (6), a lifting mechanism which can drive the peep-proof plate (4) to longitudinally move is arranged on the base (1), a turnover mechanism which can drive the cover plate (7) to rotate around the central axis of the rotating shaft (6) is arranged on the base (1), and the lifting mechanism and the turnover mechanism are connected through a chain wheel, the rotating shaft (6) is coaxially provided with a bidirectional motor (8), and when the peep-proof plate (4) moves upwards, the chain wheel and chain assembly drives the cover plate (7) to turn upwards.

2. The intelligent laboratory table for skill assessment of laboratory operations according to claim 1, wherein said lifting mechanism comprises a rack (9) disposed on the peep-proof plate (4) and a connecting shaft (10) disposed in the receiving chamber (5), said connecting shaft (10) being provided with a lifting gear (11), said lifting gear (11) being engaged with the rack (9).

3. The intelligent laboratory operational skill evaluation laboratory table according to claim 2, the rotating shaft (6) is coaxially provided with a rotating hole (12), the cover plate (7) is fixedly connected with a rotating column (13), the two ends of the rotating column (13) are in rotating fit with the rotating hole (12), the turnover mechanism comprises a first turnover gear (14), a planet gear (15) and a second turnover gear (16), the first overturning gear (14) is coaxially arranged on the rotating shaft (6), the rotating column (13) is centrifugally provided with a planetary hole, the planet wheel (15) is matched in the planet hole in a rotating way, the planet wheel (15) is meshed with the first overturning gear (14), the second overturning gear (16) is coaxially arranged on the rotating column (13), and the second overturning gear (16) axially extends to the planet wheel (15) and is meshed with one side, away from the first overturning gear (14), of the planet wheel (15).

4. The intelligent laboratory table for laboratory operational skill evaluation according to claim 3, wherein said chain wheel chain assembly comprises a first chain wheel (17), a second chain wheel (18) and a transmission chain (19), said first chain wheel (17) is coaxially connected to said connecting shaft (10), said second chain wheel (18) is coaxially connected to said rotating shaft (6) and corresponds to said first chain wheel (17), and two ends of said transmission chain (19) are respectively sleeved on said first chain wheel (17) and said second chain wheel (18).

5. The intelligent laboratory operating skill evaluation laboratory table according to claim 4, wherein the gear ratio of said first flipping gear (14) to said second flipping gear (16) is 3-7: 1.

6. Intelligent laboratory table for laboratory operational skill assessment according to claim 5, characterized in that the transmission ratio of the first chain wheel (17) to the second chain wheel (18) is 3-5: 1.

7. The intelligent laboratory table for skill assessment of laboratory operations according to claim 1, wherein a support plate (20) is provided on a side of the bottom surface of the cover plate (7) close to the rotation shaft (6), and the cross section of the support plate (20) is in a J-shape.