CN112767744B - A multimode english teaching device for english teaching - Google Patents
A multimode english teaching device for english teaching Download PDFInfo
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- CN112767744B CN112767744B CN202110082766.9A CN202110082766A CN112767744B CN 112767744 B CN112767744 B CN 112767744B CN 202110082766 A CN202110082766 A CN 202110082766A CN 112767744 B CN112767744 B CN 112767744B
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- 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
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
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- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention discloses a multi-mode English teaching device for English teaching, and relates to the technical field of teaching devices; a limiting mechanism is fixed on the lower side wall of the base, a pressure rod in the limiting mechanism is suspended on the upper side of the base, sliding grooves are formed in the left side and the right side of a first blackboard, the sliding grooves are matched with a first sliding block in a sliding mode, the first sliding block is fixed on the left side wall and the right side wall of a second blackboard, the second blackboard is inserted into the collecting box, a fixing plate is suspended on the front side of the second blackboard, a second sliding block is fixed in the center of the lower surface of the fixing plate, sliding plates are clamped on the front side and the rear side of the second sliding block, the lower side wall of a vertical plate of each sliding plate is fixed on the upper side wall of the corresponding fixing plate, a limiting block is fixed on one side of the inner wall of each sliding plate, a positioning rod is abutted against the other side of the second sliding block, and the positioning rod is exposed on the front side of the sliding plate on the front side after penetrating through the vertical plate of the sliding plate on the front side; after the device is pushed to a classroom needing to be used, the device can be quickly limited, time is saved, projection equipment can be installed, and the device is convenient to use.
Description
Technical Field
The invention relates to the technical field of teaching devices, in particular to a multi-mode English teaching device for English teaching.
Background
At present, along with the development of epoch, the progress of science and technology, the world pattern moves towards the pluralism, therefore, people master a foreign language is especially important, the foreign language of english as our major repair, in-process need use the teaching device at english teaching, the help user learns, the in-process that the current teaching device that is used for english teaching is using, the function is too single, the help student that can not be fine learns, thereby the teaching of giving mr has brought very big inconvenience, the practicality has also been reduced simultaneously, and after moving the classroom that needs the use with the teaching device, can't be quick carry on spacingly to the teaching device, waste time.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art, and provides a multifunctional device for English teaching, which is reasonable in design and convenient to use.
In order to achieve the purpose, the invention adopts the technical scheme that: the blackboard comprises a base, universal wheels, supporting legs and a blackboard, wherein the universal wheels are fixed at four corners of the lower surface of the base, the supporting legs are arranged at four corners of the upper surface of the base, the upper ends of the two supporting legs at the front side are fixed at the left side and the right side of the lower surface of the blackboard, a placing box is arranged at the rear side of the blackboard, and the left side and the right side of the lower side wall of the placing box are respectively fixedly connected with the upper ends of the supporting legs at the rear side; the blackboard comprises a base, a limiting mechanism, a second blackboard, a first sliding block, a second sliding block, a sliding plate and a fixing plate, wherein the limiting mechanism is fixed on the lower side wall of the base, a pressure rod in the limiting mechanism is arranged on the upper side of the base in a hanging manner, the pressure rod is arranged on the rear lower side of the first blackboard in a hanging manner, sliding grooves are formed in the left side and the right side of the first blackboard and are matched with the first sliding block in a sliding manner, the first sliding block is respectively fixed on the left side wall and the right side wall of the second blackboard, the second blackboard is inserted into a collecting box, the fixing plate is arranged on the front side of the second blackboard in a hanging manner, the second sliding block is fixed at the center of the lower surface of the fixing plate and is arranged in an inverted T shape, the sliding plates are respectively clamped on the front side and the rear side of the second sliding block and are arranged in an inverted L shape, the lower side wall of a vertical plate of each sliding plate is fixed on the upper side wall of the first fixing plate, and a limiting block is fixed on one side of the inner wall of each sliding plate, the limiting block is arranged in a manner of abutting against one side of the second sliding block, the other side of the second sliding block is abutted with a positioning rod, and the positioning rod penetrates through a vertical plate of the sliding plate at the front side and then is exposed at the front side of the sliding plate at the front side;
the limiting mechanism also comprises a connecting rod, a first spring, a limiting plate, a limiting frame, a limiting rod, a push plate, a movable sheet, a movable rod, a limiting ring, a positioning plate, a second spring and a movable plate, wherein the connecting rod is fixed on the left side and the right side of the lower side walls of the front and the rear two pressing rods, the lower end of the connecting rod sequentially penetrates through the upper side wall of the base, the limiting plate, the first spring and the lower side wall of the base and is suspended on the lower side of the base, the limiting plate is fixedly connected with the connecting rod, the limiting plate is movably arranged in a cavity in the center of the base, the lower side wall of the limiting plate is fixedly connected with the upper end of the first spring, the lower end of the first spring is fixedly connected with the inner side wall of the lower side of the cavity in the center of the base, the limiting frames are fixed on the lower ends of the connecting rods on the left side and the right side of the front side, the limiting frames are arranged in a Z shape, the limiting rod is fixed on the upper side wall of one side of the limiting frames, and the movable sheet is abutted against one side of the movable sheet, the front side and the rear side of the upper side wall of the movable sheet are respectively fixed on the lower ring wall of the movable rod on the front side and the rear side, the two ends of the movable rod are respectively and movably sleeved with a limiting ring, the upper end of the limiting ring is fixed on the lower side wall of the base, a positioning plate is fixed on the center of the lower surface of the base, a plurality of springs are arranged on one side wall of the positioning plate in a matrix equidistant mode, the other ends of the springs are fixed on one side wall of the movable sheet, the front side and the rear side of the movable sheet are respectively sleeved with and fixed on the movable rods on the front side and the rear side, a push plate is suspended on one side of the movable rod on the rear side and is arranged in a T shape, a transverse plate of the push plate is suspended on one side of the movable sheet, and vertical plates of the push plate are fixed on the lower ends of two connecting rods on the rear side.
Furthermore, the lower end of the limiting rod is fixed with a non-slip mat, and when the limiting rod abuts against the ground, the friction force between the limiting rod and the ground is increased through the non-slip mat.
Furthermore, a groove is formed in the lower side wall of the second blackboard, a support sleeve is arranged in the groove, two sides of the outer ring wall at one end of the support sleeve are respectively connected with the front side wall and the rear side wall of the groove in a rotating mode through bearings, a support insertion rod is inserted into the support sleeve and fixed through a bolt, and the other end of the support insertion rod penetrates through one end of the support sleeve and then is suspended outside the support sleeve; one side that the base center was kept away from to two supporting legss of front side all is fixed with the fixing base No. one, connect soon with No. two fixing bases through the bolt on this fixing base, all be fixed with spacing seat on the opposite side of No. two fixing bases, this spacing seat cooperatees with the support inserted bar and inserts and establish, when sliding a slider on the blackboard No. two to the spout, with support sleeve from the recess internal screw-out, loosen the bolt on the support sleeve, insert the support inserted bar to spacing in, tighten the bolt on the support sleeve again, and then support No. two blackboards.
Furthermore, a guide rod is inserted into the second spring, one end of the guide rod is fixedly connected with one side wall of the movable plate, the other end of the guide rod penetrates through the other end of the second spring and is movably inserted into the positioning plate, and when the movable plate drives the movable rod to move back and forth, the guide rod guides the movable plate.
Further, the supporting legs comprise a supporting tube and a supporting rod, the lower end of the supporting tube is fixed to the upper surface of the base, the supporting rod is inserted into the supporting tube and fixed through bolts, the upper end of the supporting rod is fixed to the lower surface of the first blackboard and the lower side wall of the containing box respectively, and when the blackboard is used, the length of the supporting legs is adjusted according to the height required by the first blackboard and the second blackboard, so that the first blackboard and the second blackboard reach proper heights.
Further, the lower side of a blackboard is hung with a chalk box, hanging plates are fixed on the left side and the right side of the chalk box, the hanging plates are arranged in an inverted L shape, hanging rings are sleeved on vertical plates of the hanging plates, the hanging rings on the two sides are fixed at the upper ends of supporting legs on the left side and the right side of the chalk box respectively, before the chalk box is used, chalk is placed in the chalk box, writing is performed in the writing process, the chalk box is directly taken from the chalk box, after the chalk box is used for a period of time, the hanging plates on the two sides of the chalk box are taken down from the hanging rings, and then the chalk box is cleaned.
The working principle of the invention is as follows: when in use, the device is driven to move into a classroom to be used by the universal wheels, the pressure rod on the front side is stepped by feet to move downwards, the pressure rod drives the connecting rod to move downwards, when the connecting rod moves downwards, the limiting plate and the limiting frame are simultaneously driven to move downwards, when the limiting frame moves downwards, the movable plate moves towards the other side, and at the moment, the movable plate drives the movable rod to move, the movable rod drives the movable plate to move, when the lower side edge of the limiting frame moves to the lower side of the movable plate, the elastic force of the second spring drives the movable plate to recover the initial position, the movable plate drives the movable plate to recover to the initial position by the movable rod, so that the lower side of the movable plate is abutted against the upper side of the transverse plate at the lower side of the limiting frame, the limiting frame is limited, the limiting rod on the limiting frame is abutted against the ground, the base is limited, and then the two second blackboards are respectively taken out of the placing box, and sliding the first slide block into the sliding grooves on two sides of the first blackboard respectively, when the projection equipment is needed, screwing out the positioning rod, taking the fixed plate down, fixing the projection equipment on the upper surface of the fixed plate, sliding the fixed plate into the sliding plate, screwing the positioning rod into the sliding plate to limit the fixed plate, then treading on the pressure rod on the rear side, driving the connecting rod on the lower side to move downwards by the pressure rod, driving the limiting plate on the connecting rod, and pushing the push plate to move downwards, pushing the rear side of the movable plate to one side by the push plate, loosening the limiting frame by the movable plate, pushing the limiting plate above the limiting frame upwards by the spring above the limiting frame, driving the connecting rod inside to move upwards by the limiting plate, driving the pressure rod on the upper side to move upwards by the connecting rod, moving the limiting frame upwards at the moment, then loosening the pressure rod on the rear side, driving the pressure rod on the rear side to move upwards by the elasticity of the spring on the rear side, the device is restored to the initial position, then is pushed to a proper position through the universal wheels, and finally the pressing rod on the front side is stepped to limit the base.
After adopting the structure, the invention has the beneficial effects that:
1. the lower side of the base is provided with a limiting mechanism, and the limiting and loosening effects can be achieved only by respectively stepping on the pressure rods on the front side and the rear side;
2. two second blackboards are arranged in the placing box at the rear side of the first blackboard, and the second blackboards can be arranged on two sides of the first blackboard, so that the area required by drawing and writing is increased;
3. can be fixed with projection equipment on the fixed plate of blackboard upside, when needing to use, can install it on the fixed plate earlier, then slide to the slide through No. two sliders of fixed plate downside again on, and then reach the effect of installation, when need not to use, only need with the fixed plate slide down can, labour saving and time saving.
Drawings
FIG. 1 is a schematic view of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Fig. 5 is an enlarged view of the portion C in fig. 3.
FIG. 6 is a schematic view of the structure of the slide plate of the present invention.
FIG. 7 is a schematic view of the structure of the second blackboard in the present invention.
Fig. 8 is an enlarged view of a portion D in fig. 7.
FIG. 9 is a schematic view of the structure of the push plate according to the present invention.
Description of reference numerals:
the blackboard eraser comprises a base 1, universal wheels 2, supporting legs 3, supporting tubes 3-1, supporting rods 3-2, a first blackboard 4, a placing box 5, a limiting mechanism 6, a pressing rod 6-1, a connecting rod 6-2, a first spring 6-3, a limiting plate 6-4, a limiting frame 6-5, a limiting rod 6-6, a push plate 6-7, a movable sheet 6-8, a movable rod 6-9, a limiting ring 6-10, a positioning plate 6-11, a second spring 6-12, a movable plate 6-13, a second blackboard 7, a first sliding block 8, a second sliding block 9, a sliding plate 10, a limiting block 10-1, a fixing plate 11, a sliding chute 12, a positioning rod 13, an anti-skid pad 14, a groove 15, a supporting sleeve 16, a supporting inserted rod 17, a first fixing seat 18, a second fixing seat 19, a limiting seat 20, a guide rod 21, a chalk box 22, Link plate 23, link 24.
The specific implementation mode is as follows:
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 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.
As shown in fig. 1 to 9, the following technical solutions are adopted in the present embodiment: the blackboard eraser comprises a base 1, universal wheels 2, supporting legs 3 and a blackboard 4, wherein the universal wheels 2 are fixed at four corners of the lower surface of the base 1 through bolts, the supporting legs 3 are fixed at four corners of the upper surface of the base 1 in a welding manner, the upper ends of the two supporting legs 3 at the front side are fixed at the left side and the right side of the lower surface of the blackboard 4 in a welding manner, a placing box 5 is arranged at the rear side of the blackboard 4, a chalk box 22 is suspended at the lower side of the blackboard 4, hanging plates 23 are fixed at the left side and the right side of the chalk box 22 in a welding manner, the hanging plates 23 are arranged in an inverted L shape, hanging rings 24 are sleeved on the vertical plates of the hanging plates 23, the hanging rings 24 at the two sides are respectively fixed at the upper ends of the supporting legs 3 at the left side and the right side in a welding manner, chalks, chalk, eraser and the like can be conveniently placed, after the blackboard eraser is used, the blackboard can be detached for cleaning, the cleanness of the blackboard can be further ensured, the left side and the right side wall of the lower side of the placing box 5 are respectively fixed with the upper ends of the supporting legs 3 at the rear side in a welding manner, the supporting legs 3 are composed of supporting tubes 3-1 and supporting rods 3-2, the lower ends of the supporting tubes 3-1 are welded and fixed on the upper surface of the base 1, the supporting rods 3-2 are inserted into the supporting tubes 3-1 and fixed through bolts, the upper ends of the supporting rods 3-2 are respectively fixed on the lower surface of the first blackboard 4 and the lower side wall of the placing box 5 for a long time, and the heights of the first blackboard 4 and the second blackboard 7 can be conveniently adjusted; the blackboard eraser further comprises a limiting mechanism 6, a second blackboard 7, a first sliding block 8, a second sliding block 9, a sliding plate 10 and a fixing plate 11, wherein the limiting mechanism 6 is fixed on the lower side wall of the base 1, a pressure rod 6-1 in the limiting mechanism 6 is arranged on the upper side of the base 1 in a hanging manner, the pressure rod 6-1 is arranged on the lower rear side of the first blackboard 4 in a hanging manner, sliding grooves 12 are respectively formed in the left side and the right side of the first blackboard 4, the sliding grooves 12 are matched with the first sliding block 8 in a sliding manner, the first sliding block 8 is respectively welded and fixed on the left side wall and the right side wall of the second blackboard 7, the second blackboard 7 is inserted into the placing box 5, the fixing plate 11 is arranged on the front side of the second blackboard 7 on the front side in a hanging manner, the second sliding block 9 is welded and fixed in the center of the lower surface of the fixing plate 11, the second sliding block 9 is arranged in an inverted T shape, the sliding plate 10 is clamped on the front side and the rear side of the second sliding block 9, the sliding plate 10 is arranged in an inverted L shape, the lower side wall of a vertical plate of the sliding plate 10 is fixedly welded on the upper side wall of the first blackboard 4, the left side of the inner wall of the sliding plate 10 is fixedly welded with a limiting block 10-1, the limiting block 10-1 is arranged in a manner of being abutted against the left side of the second sliding block 9, the right side of the second sliding block 9 is abutted with a positioning rod 13, and the positioning rod 13 penetrates through the vertical plate of the sliding plate 10 at the front side and then is exposed at the front side of the sliding plate 10 at the front side;
the limiting mechanism 6 also comprises a connecting rod 6-2, a first spring 6-3, a limiting plate 6-4, a limiting frame 6-5, a limiting rod 6-6, a push plate 6-7, a movable sheet 6-8, a movable rod 6-9, a limiting ring 6-10, a positioning plate 6-11, a second spring 6-12 and a movable plate 6-13, wherein the connecting rod 6-2 is fixedly welded on the left side and the right side of the lower side wall of the front and the rear two pressure rods 6-1, the lower end of the connecting rod 6-2 sequentially passes through the upper side wall of the base 1, the limiting plate 6-4, the first spring 6-3 and the lower side wall of the base 1 and then is suspended on the lower side of the base 1, the limiting plate 6-4 is fixedly welded with the connecting rod 6-2, and the limiting plate 6-4 is movably arranged in a cavity in the center of the base 1, the lower side wall of a limiting plate 6-4 is welded and fixed with the upper end of a first spring 6-3, the lower end of the first spring 6-3 is welded and fixed with the inner side wall of the lower side of the cavity in the center of the base 1, the lower ends of a connecting rod 6-2 at the left side and the right side of the front side are both welded and fixed with a limiting frame 6-5, the limiting frame 6-5 is arranged in a Z shape, a limiting rod 6-6 is welded and fixed on the upper side wall at the left side of the limiting frame 6-5, the lower end of the limiting rod 6-6 is adhered and fixed with an anti-skid pad 14, when the limiting rod 6-6 is pressed against the ground, the sliding of the limiting rod 6-6 can be prevented, a movable sheet 6-8 is pressed against the right side of the lower side of the limiting frame 6-5, the front side and the rear side of the upper side wall of the movable sheet 6-8 are respectively welded and fixed on the lower ring wall of the movable rods 6-9 at the front side and the rear side, the two ends of the movable rod 6-9 are movably sleeved with a limiting ring 6-10, the upper end of the limiting ring 6-10 is welded and fixed on the lower side wall of the base 1, the center of the lower surface of the base 1 is welded and fixed with a positioning plate 6-11, the left side wall of the positioning plate 6-11 is welded and fixed with a plurality of second springs 6-12 in a matrix shape at equal intervals, the left end of the second springs 6-12 is welded and fixed on the left side wall of the movable plate 6-13, guide rods 21 are inserted in the second springs 6-12, the left end of the guide rods 21 is welded and fixed with the right side wall of the movable plate 6-13, the right end of the guide rods 21 passes through the right end of the second springs 6-12 and is movably inserted in the positioning plate 6-11, and the movable plate 6-13 increases the stability of the second springs 6-12 when the movable rod 6-9 is driven to move back and forth by the movable plate 6-13, the front side and the rear side of the movable plate 6-13 are respectively sleeved and welded and fixed on the movable rods 6-9 at the front side and the rear side, one side of the movable rod 6-9 at the rear side is suspended with a push plate 6-7, the push plate 6-7 is arranged in a T shape, a transverse plate of the push plate 6-7 is suspended at the left side of the movable plate 6-8, and a vertical plate of the push plate 6-7 is welded and fixed at the lower ends of the two connecting rods 6-2 at the rear side;
a groove 15 is formed in the lower side wall of the second blackboard 7, a supporting sleeve 16 is arranged in the groove 15, two sides of the outer ring wall at one end of the supporting sleeve 16 are respectively connected with the front side wall and the rear side wall of the groove 15 in a rotating mode through bearings, a supporting insertion rod 17 is inserted into the supporting sleeve 16 and fixed through bolts, and the other end of the supporting insertion rod 17 penetrates through one end of the supporting sleeve 16 and then is arranged on the outer side of the supporting sleeve 16 in a suspending mode; one side that base 1 center was kept away from to two supporting legss 3 of front side all welded fastening has a fixing base 18, connect soon with No. two fixing bases 19 through the bolt on this fixing base 18, equal welded fastening has spacing seat 20 on No. two fixing bases 19's the opposite side, this spacing seat 20 with support inserted bar 17 cooperate and insert and establish, when sliding a slider 8 on No. two blackboards 7 to spout 12 on, the accessible supports inserted bar 17 and spacing seat 20's cooperation and carries on spacingly No. two blackboards 7, and then increase No. two blackboards 7's stability.
The working principle of the specific implementation mode is as follows: when the device is used, the universal wheel 2 drives the device to move into a classroom to be used, a foot pedals the pressure rod 6-1 at the front side to move downwards, the pressure rod 6-1 drives the connecting rod 6-2 to move downwards, the connecting rod 6-2 drives the limiting plate 6-4 and the limiting frame 6-5 to move downwards simultaneously when moving downwards, the limiting frame 6-5 moves downwards, the movable sheet 6-8 moves towards the other side, the movable sheet 6-8 drives the movable rod 6-9 to move at the moment, the movable rod 6-9 drives the movable plate 6-13 to move, when the lower side of the limiting frame 6-5 moves to the lower side of the movable sheet 6-8, the elastic force of the second spring 6-12 drives the movable plate 6-13 to restore to the initial position, the movable plate 6-13 drives the movable sheet 6-8 to restore to the initial position through the movable rod 6-9, then the lower side of the movable plate 6-8 is abutted against the upper side of the transverse plate at the lower side of the limiting frame 6-5 to limit the limiting frame 6-5, at the moment, the limiting rod 6-6 on the limiting frame 6-5 is abutted against the ground, further the base 1 is limited, then two second blackboards 7 are respectively taken out from the placing box 5, the first sliding block 8 is respectively slid into the sliding grooves 12 at the two sides of the first blackboard 4, then the supporting sleeve 16 is screwed out from the groove 15, the bolt on the supporting sleeve 16 is loosened, the supporting inserted rod 17 is inserted into the limiting seat 20, the bolt on the supporting sleeve 16 is screwed, further the second blackboard 7 is supported, when the projection equipment is required to be used, the positioning rod 13 is screwed out, after the fixing plate 11 is taken down, the projection equipment is fixed on the upper surface of the fixing plate 11, and then the fixing plate 11 is slid into the sliding plate 10, finally, the positioning rod 13 is screwed into the sliding plate 10, so that the positioning rod 13 limits the position of the fixing plate 11, then the pressure rod 6-1 at the rear side is treaded, the pressure rod 6-1 drives the connecting rod 6-2 at the lower side to move downwards, the connecting rod 6-2 drives the limiting plate 6-4 and the push plate 6-7 at the upper side to move downwards, the push plate 6-7 pushes the rear side of the movable sheet 6-8 to one side, at the moment, the movable sheet 6-8 loosens the limiting frame 6-5, the spring 6-3 at the upper side of the limiting frame 6-5 pushes the limiting plate 6-4 at the upper side upwards, so that the limiting plate 6-4 drives the connecting rod 6-2 at the inner part to move upwards, the connecting rod 6-2 drives the pressure rod 6-1 at the upper side to move upwards, and at the moment, the limiting frame 6-5 moves upwards, then the pressing rod 6-1 at the rear side is loosened, the pressing rod 6-1 at the rear side is driven to move upwards under the elastic force of the first spring 6-3 at the rear side, the device is restored to the initial position, the universal wheel 2 is used for pushing the device to the proper position, finally the pressing rod 6-1 at the front side is stepped on to limit the base 1, before the chalk is used, the chalk is placed in the chalk box 22, the chalk is directly taken out from the chalk box 22 in the process of writing and drawing, after a period of use, the hanging plates 23 at the two sides of the chalk box 22 are taken down from the hanging rings 24, and then the chalk box 22 is cleaned.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. the lower side of the base 1 is provided with a limiting mechanism 6, and the limiting and loosening effects can be achieved only by respectively stepping on the pressure rods 6-1 at the front side and the rear side;
2. two second blackboards 7 are arranged in the placing box 5 at the rear side of the first blackboard 4, and the second blackboards 7 can be arranged at two sides of the first blackboard 4, so that the area required by drawing is increased;
3. the projection equipment can be fixed on the fixing plate 11 on the upper side of the first blackboard 4, when the projection equipment needs to be used, the projection equipment can be firstly installed on the fixing plate 11, and then the projection equipment slides onto the sliding plate 10 through the second sliding block 9 on the lower side of the fixing plate 11, so that the installation effect is achieved, when the projection equipment does not need to be used, only the fixing plate 11 needs to be slid down, and time and labor are saved;
4. be equipped with support sleeve 16 and support inserted bar 17 in the recess 15 of No. two blackboard 7 downside and constitute, when using, can take out support inserted bar 17 from support sleeve 16 is inside, then will support the outer end of inserted bar 17 and insert to the inside of spacing seat 20, screws up the bolt on the support sleeve 16 again, and then reaches the effect that supports No. two blackboards 7.
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 (6)
1. A multi-mode English teaching device for English teaching comprises a base (1), universal wheels (2), supporting legs (3) and a blackboard (4), wherein the universal wheels (2) are fixed at four corners of the lower surface of the base (1), the supporting legs (3) are arranged at four corners of the upper surface of the base (1), the upper ends of the two supporting legs (3) at the front side are fixed at the left side and the right side of the lower surface of the blackboard (4), a placing box (5) is arranged at the rear side of the blackboard (4), and the left side and the right side of the lower side wall of the placing box (5) are respectively fixedly connected with the upper ends of the supporting legs (3) at the rear side; the method is characterized in that: the blackboard eraser further comprises a limiting mechanism (6), a second blackboard (7), a first sliding block (8), a second sliding block (9), a sliding plate (10) and a fixing plate (11), wherein the limiting mechanism (6) is fixed on the lower side wall of the base (1), a pressing rod (6-1) in the limiting mechanism (6) is suspended on the upper side of the base (1), the pressing rod (6-1) is suspended on the lower rear side of the first blackboard (4), sliding grooves (12) are formed in the left side and the right side of the first blackboard (4), the sliding grooves (12) are matched and slidably arranged with the first sliding block (8), the first sliding block (8) is respectively fixed on the left side wall and the right side wall of the second blackboard (7), the second blackboard (7) is inserted into the placing box (5), the fixing plate (11) is suspended on the front side of the second blackboard (7) on the front side, the second sliding block (9) is fixed at the center of the lower surface of the fixing plate (11), the second sliding block (9) is arranged in an inverted T shape, sliding plates (10) are clamped on the front side and the rear side of the second sliding block (9), the sliding plates (10) are arranged in an inverted L shape, the lower side walls of vertical plates of the sliding plates (10) are fixed on the upper side walls of a first fixing plate (11), a limiting block (10-1) is fixed on one side of the inner wall of each sliding plate (10), the limiting block (10-1) is arranged in a manner of being abutted to one side of the second sliding block (9), a positioning rod (13) is abutted to the other side of the second sliding block (9), and the positioning rod (13) penetrates through the vertical plate of the sliding plate (10) on the front side and then is exposed to the front side of the sliding plate (10) on the front side;
the limiting mechanism (6) also comprises a connecting rod (6-2), a first spring (6-3), a limiting plate (6-4), a limiting frame (6-5), a limiting rod (6-6), a push plate (6-7), a movable sheet (6-8), a movable rod (6-9), a limiting ring (6-10), a positioning plate (6-11), a second spring (6-12) and a movable plate (6-13), wherein the connecting rod (6-2) is fixed on the left side and the right side of the lower side wall of the front and rear two pressure rods (6-1), the lower end of the connecting rod (6-2) sequentially penetrates through the upper side wall of the base (1), the limiting plate (6-4), the first spring (6-3) and the lower side wall of the base (1) and then is suspended on the lower side of the base (1), the limiting plate (6-4) is fixedly connected with the connecting rod (6-2), the limiting plate (6-4) is movably arranged in a cavity at the center of the base (1), the lower side wall of the limiting plate (6-4) is fixedly connected with the upper end of a spring (6-3), the lower end of the spring (6-3) is fixedly connected with the inner side wall at the lower side of the cavity at the center of the base (1), the lower ends of the connecting rods (6-2) at the left side and the right side of the front side are respectively fixed with a limiting frame (6-5), the limiting frames (6-5) are arranged in a Z shape, a limiting rod (6-6) is fixed on the upper side wall at one side of the limiting frame (6-5), a movable sheet (6-8) is butted at one side of the lower side of the limiting frame (6-5), the front side and the rear side of the upper side wall of the movable sheet (6-8) are respectively fixed on the lower ring wall of the movable rods (6-9) at the front side and the rear side, both ends of the movable rod (6-9) are movably sleeved with a limit ring (6-10), the upper end of the limit ring (6-10) is fixed on the lower side wall of the base (1), a positioning plate (6-11) is fixed on the center of the lower surface of the base (1), a plurality of second springs (6-12) are arranged on one side wall of the positioning plate (6-11) in a matrix type at equal intervals, the other ends of the second springs (6-12) are fixed on one side wall of the movable plate (6-13), the front side and the rear side of the movable plate (6-13) are respectively sleeved and fixed on the movable rods (6-9) at the front side and the rear side, a push plate (6-7) is suspended on one side of the movable plate (6-8) at the rear side, the push plate (6-7) is arranged in a T shape, a transverse plate of the push plate (6-7) is suspended on one side of the movable plate (6-8), the vertical plates of the push plates (6-7) are fixed on the lower ends of the two connecting rods (6-2) at the rear side;
when the device is used, the universal wheel (2) drives the device to move into a classroom to be used, a foot pedals the pressure rod (6-1) on the front side to move downwards, the pressure rod (6-1) drives the connecting rod (6-2) to move downwards, the connecting rod (6-2) drives the limiting plate (6-4) and the limiting frame (6-5) to move downwards simultaneously when moving downwards, the limiting frame (6-5) moves the movable plate (6-8) to the other side when moving downwards, the movable plate (6-8) drives the movable rod (6-9) to move at the moment, the movable rod (6-9) drives the movable plate (6-13) to move, when the lower side of the limiting frame (6-5) moves to the lower side of the movable plate (6-8), the elastic force of the second spring (6-12) drives the movable plate (6-13) to restore to the initial position, the movable plates (6-13) drive the movable plates (6-8) to restore to the initial positions through the movable rods (6-9), so that the lower sides of the movable plates (6-8) are abutted against the upper sides of transverse plates on the lower sides of the limiting frames (6-5) to limit the limiting frames (6-5), the limiting rods (6-6) on the limiting frames (6-5) are abutted against the ground at the moment to limit the base (1), then the two second blackboards (7) are respectively taken out from the placing box (5), the first sliding blocks (8) are respectively slid into sliding grooves (12) on two sides of the first blackboards (4), when projection equipment is required to be used, the positioning rods (13) are screwed out, after the fixed plates (11) are taken down, the projection equipment is fixed on the upper surfaces of the fixed plates (11), and then the fixed plates (11) are slid into the sliding plates (10), finally, the positioning rod (13) is screwed into the sliding plate (10) to enable the positioning rod (13) to limit the fixed plate (11), then the pressure rod (6-1) at the rear side is stepped, the pressure rod (6-1) drives the connecting rod (6-2) at the lower side to move downwards, the connecting rod (6-2) drives the limiting plate (6-4) and the push plate (6-7) on the connecting rod to move downwards, the push plate (6-7) pushes the rear side of the movable sheet (6-8) to one side, at the moment, the movable sheet (6-8) loosens the limiting frame (6-5), the spring (6-3) above the limiting frame (6-5) pushes the limiting plate (6-4) above the limiting frame upwards, and the limiting plate (6-4) drives the connecting rod (6-2) inside to move upwards, the connecting rod (6-2) drives the pressure lever (6-1) on the upper side to move upwards, the limiting frame (6-5) moves upwards at the moment, then the pressure lever (6-1) on the rear side is loosened, the pressure lever (6-1) on the rear side is driven to move upwards under the elasticity of the first spring (6-3) on the rear side, the device is restored to the initial position, the device is pushed to a proper position through the universal wheel (2), finally the pressure lever (6-1) on the front side is stepped on, the base (1) is limited, and the limiting and loosening effects can be achieved only by respectively stepping on the pressure levers (6-1) on the front side and the rear side.
2. The multi-modal english teaching device for english teaching according to claim 1, wherein: the lower end of the limiting rod (6-6) is fixed with an anti-slip pad (14), and when the limiting rod (6-6) is abutted to the ground, the friction force between the limiting rod (6-6) and the ground is increased through the anti-slip pad (14).
3. The multi-modal english teaching apparatus for english teaching according to claim 1, wherein: a groove (15) is formed in the lower side wall of the second blackboard (7), a supporting sleeve (16) is arranged in the groove (15), two sides of the outer ring wall of one end of the supporting sleeve (16) are respectively screwed with the front side wall and the rear side wall of the groove (15) through bearings, a supporting inserted rod (17) is inserted into the supporting sleeve (16) and fixed through a bolt, and the other end of the supporting inserted rod (17) is suspended outside the supporting sleeve (16) after penetrating through one end of the supporting sleeve (16); one side of two supporting legs (3) of front side keeping away from base (1) center all is fixed with fixing base (18) No. one, connect soon through bolt and No. two fixing base (19) on this fixing base (18), all be fixed with spacing seat (20) on the opposite side of No. two fixing base (19), this spacing seat (20) cooperate with support inserted bar (17) to insert and establish, when sliding slider (8) on No. two blackboards (7) to spout (12), revolve support sleeve (16) from recess (15) and go out, loosen the bolt on support sleeve (16), insert support inserted bar (17) to spacing seat (20) in, tighten the bolt on support sleeve (16) again, and then support No. two blackboards (7).
4. The multi-modal english teaching device for english teaching according to claim 1, wherein: guide rods (21) are inserted into the second springs (6-12), one ends of the guide rods (21) are fixedly connected with one side wall of the movable plates (6-13), the other ends of the guide rods (21) penetrate through the other ends of the second springs (6-12) and are movably inserted into the positioning plates (6-11), and when the movable plates (6-13) drive the movable rods (6-9) to move back and forth, the guide rods (21) guide the movable plates (6-13).
5. The multi-modal english teaching apparatus for english teaching according to claim 1, wherein: the support legs (3) are composed of support tubes (3-1) and support rods (3-2), the lower ends of the support tubes (3-1) are fixed on the upper surface of the base (1), the support rods (3-2) are inserted into the support tubes (3-1) and fixed through bolts, the upper ends of the support rods (3-2) are fixed on the lower surface of the first blackboard (4) and the lower side wall of the placing box (5) respectively, and when the support legs are used, the length of the support legs (3) is adjusted according to the height required by the first blackboard (4) and the second blackboard (7), so that the first blackboard (4) and the second blackboard (7) reach proper height.
6. The multi-modal english teaching apparatus for english teaching according to claim 1, wherein: blackboard (4) the downside hang and be equipped with chalk box (22), the left and right sides of this chalk box (22) all is fixed with link plate (23), this link plate (23) are the setting of "L" shape, all overlap on the riser of link plate (23) and be equipped with link ring (24), the upper end in supporting legs (3) of its left and right sides is fixed respectively in link ring (24) of both sides, before using, place the chalk in chalk box (22), write the in-process of writing and drawing, directly take from chalk box (22), after using a period, take link plate (23) of chalk box (22) both sides from link ring (24), then wash chalk box (22).
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