CN112477482A - Multi-functional teaching aid for village teaching - Google Patents
Multi-functional teaching aid for village teaching Download PDFInfo
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- CN112477482A CN112477482A CN202011416426.7A CN202011416426A CN112477482A CN 112477482 A CN112477482 A CN 112477482A CN 202011416426 A CN202011416426 A CN 202011416426A CN 112477482 A CN112477482 A CN 112477482A
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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
- B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
- B43L13/02—Draughting machines or drawing devices for keeping parallelism
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Abstract
The invention relates to the technical field of teaching aids, in particular to a multifunctional teaching aid for village teaching, which comprises a strip plate, wherein a T-shaped sliding chute is arranged in the strip plate, the front end of the sliding chute is opened, and a sliding block matched with the sliding chute is arranged in the sliding chute; a cross rod extending towards the front side is fixedly arranged at the front end of the sliding block, and a vertical rod is fixedly arranged at the lower side of the free end of the cross rod; four groups of locking sleeves capable of sliding up and down are sleeved outside the vertical rod, and locking bolts are arranged on the locking sleeves; a connecting rod extending backwards is arranged on one side of the locking sleeve, the free end of the connecting rod is connected with an installation cylinder, the installation cylinder is provided with a first slot with a rear opening, and the inner diameter of the first slot is matched with the outer diameter of the chalk; through the setting of rectangular board, spout and slider, can once only move four lines of drawing to four lines are parallel to each other and the interval equals, and the depth of parallelism is better, is favorable to writing of english, has improved teaching efficiency.
Description
Technical Field
The invention relates to the technical field of teaching aids, in particular to a multifunctional teaching aid for village teaching.
Background
In the English teaching process, some teachers need to draw three four-line grids with chalk on a blackboard in order to write out a finished blackboard writing. In the past, teachers generally draw four lines and three grids on a blackboard by using a ruler, and the four lines are parallel to each other and are equal in spacing by using personal experience. The distance between the four lines drawn by the method is difficult to well control, the parallelism is poor, the requirement is difficult to meet, the line drawing speed is low, time and labor are wasted, and the teaching efficiency is reduced.
A Chinese patent (application number: 201710144077X) is an English four-line grid drawing device, which relates to the technical field of teaching auxiliary equipment and comprises a frame, wherein a mounting cross beam is fixedly mounted at the middle position of the frame, four line drawing mechanisms arranged in rows are mounted on the mounting cross beam, a plurality of walking wheels are rotatably mounted on the frame towards one side of a blackboard, and the walking directions of all the walking wheels are consistent. However, this device has the following disadvantages: 1. the device is free of a guide mechanism, and can move freely on the blackboard through a plurality of travelling wheels, although the distance between each line is unchanged, the drawn lines are not straight lines, the parallelism is poor, English writing is not facilitated, and the teaching efficiency is influenced; 2. the conditions of rural teaching are difficult, and teachers can continue to use the chalk even if the chalk is broken, so that the lengths of all the chalks are different easily, the chalks need to be frequently adjusted, the operation is complex, the teaching efficiency is not improved, and the teaching efficiency can be reduced.
Therefore, the multifunctional teaching aid for country teaching is designed, four lines can be drawn in one action through the arrangement of the long strip plate, the sliding groove and the sliding block, the four lines are parallel to each other, the distances between the four lines are equal, the parallelism is good, English writing is facilitated, and the teaching efficiency is improved.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the problems that lines drawn by the existing English four-line grid drawing line device are not straight lines, are poor in parallelism, are not beneficial to English writing and influence teaching efficiency, the invention provides a multifunctional teaching aid for country teaching.
The technical scheme adopted by the invention for solving the technical problems is as follows: a multifunctional teaching aid for village teaching comprises a long strip plate, wherein a T-shaped sliding groove is arranged in the long strip plate, the front end of the sliding groove is open, and a sliding block matched with the sliding groove is arranged in the sliding groove; a cross rod extending towards the front side is fixedly arranged at the front end of the sliding block, and a vertical rod is fixedly arranged at the lower side of the free end of the cross rod; four groups of locking sleeves capable of sliding up and down are sleeved outside the vertical rod, and locking bolts are arranged on the locking sleeves; the chalk box is characterized in that a connecting rod extending backwards is arranged on one side of the locking sleeve, the free end of the connecting rod is connected with an installation cylinder, a first slot with a rear opening is formed in the installation cylinder, and the inner diameter of the first slot is matched with the outer diameter of chalk.
When the chalk locking device is used, firstly, chalks are inserted into the corresponding mounting cylinders, then the locking sleeves are slid to enable the locking sleeves to be arranged at equal intervals, and the locking sleeves are locked through the locking bolts, so that the distance between the chalks is ensured to be the same; at last, the long strip plate is horizontally pressed on the blackboard through one hand, the other hand pulls the vertical rod to move transversely, the transverse rod is utilized to drive the sliding block to move in the sliding groove, the long strip plate is pressed at the moment, the sliding block can be ensured to move linearly, further, the moving paths of the four chalks are also linear, four lines can be drawn through one-time action, the four lines are parallel to each other, the distance between the four lines is equal, the parallelism is good, the writing of English is facilitated, and the teaching efficiency is improved.
Preferably, two connecting blocks are arranged at the two ends of the upper part and the lower part of the vertical rod in parallel, a vertically arranged limiting rod is fixedly arranged behind the connecting blocks, the limiting rod is positioned right behind the vertical rod, an auxiliary sleeve is sleeved outside the limiting rod, and the connecting rod is connected with one side of the auxiliary sleeve and is vertically arranged between the connecting rod and the limiting rod; the other side of the auxiliary sleeve is connected with the mounting cylinder. Through the setting of auxiliary sleeve and gag lever post, can make the installation section of thick bamboo perpendicular to blackboard all the time through the mode of two point fixing, and then make chalk perpendicular to blackboard, avoid the chalk slope to lead to its problem of breaking easily, also improved the stability of an installation section of thick bamboo simultaneously, improve the quality of setting-out.
Preferably, be provided with the dust hood of rear side open-ended between the connecting block, both sides all are provided with the U-shaped notch that matches with the connecting block about the dust hood, the connecting block periphery is provided with the draw-in groove, the dust cover passes through the draw-in groove and can dismantle with the connecting block with the U-shaped notch and be connected. Through the arrangement of the dust shield, on one hand, the vertical rod can be moved by holding the dust shield, so that the comfort level during holding is improved, the problem of scraping hands by locking bolts is avoided, and the problem of breaking chalk by pinching is also avoided; on the other hand, the dust blocking cover can reduce the dust amount when the chalk draws a line, and the body health of teachers is facilitated.
Preferably, an insertion rod is arranged on one side, facing the installation cylinder, of the auxiliary sleeve, a second slot matched with the insertion rod is arranged on the front side of the installation cylinder, and a second spring connected with the bottom of the second slot and the end face of the insertion rod is arranged in the second slot; the auxiliary sleeve is hinged to the inserted bar through an articulated shaft, a buckle is arranged on one side of the articulated shaft, a buckle groove matched with the buckle is formed in the auxiliary sleeve, and the inserted bar extends backwards horizontally just when the buckle is clamped with the buckle groove. Through the arrangement of the inserting rod, the second slot and the second spring, on one hand, the second spring is used for extruding the mounting cylinder to the blackboard, so that all chalks can be ensured to be in contact with the blackboard when the lengths of the chalks are not the same, the problem that part of chalks cannot draw lines due to different lengths of the chalks is further avoided, and four lines can be drawn at one time; on the other hand, after the chalk is shortened after the chalk is used for a period of time, the second spring can automatically press the chalk to the blackboard, so that the automatic adjustment of the chalk is realized, the frequent manual adjustment is not needed, and the teaching efficiency is improved; through the setting of articulated shaft, buckle and catching groove, can make the rotatory certain angle of installation section of thick bamboo then conveniently change the chalk, simultaneously, the chalk accessible is rotatory in-process with the blackboard friction squeeze into first slot gradually, reduce the direct hard easy disconnected problem of pressing of chalk on the blackboard, in addition by slope to vertically in-process chalk initial end portion through wearing and tearing and slick and sly, noise when reducing the start of use.
Preferably, a first spring is arranged in the first slot, and the elastic modulus of the first spring is greater than that of the second spring, so that the chalk is gradually pushed out from the first slot, the phenomenon that the chalk remained in the first slot is too long is avoided, and the use rate of the chalk is improved. Because in order to avoid the chalk to break away from the first slot, the depth of the first slot is deep during actual use, and after the chalk between the installation barrel and the blackboard is drawn, the first slot still has a part of chalk and can not be fully utilized, so that the resource waste is caused.
Preferably, one end of the installation cylinder, which is located in the first slot, is provided with a plurality of circular tightening structures surrounded by the arc-shaped elastic pieces, the arc-shaped elastic pieces are internally provided with arc-shaped threading holes coaxially arranged with the installation cylinder, one of the arc-shaped elastic pieces is fixedly connected with an elastic rope, and the elastic rope sequentially penetrates through all the threading holes and then extends to the auxiliary sleeve along the outer wall of the installation cylinder to be fixedly connected with the auxiliary sleeve. Through the arrangement of the arc-shaped elastic sheet and the elastic rope, as the drawn line of the chalk is shortened, the distance between the mounting cylinder and the auxiliary sleeve is increased, and further the arc-shaped elastic sheet is deformed through tensioning of the elastic rope, so that the circular tightening structure is closed, and the friction force of the arc-shaped elastic sheet is increased, the chalk can be clamped in time when the chalk is about to be separated from the first slot by reasonably setting the length of the elastic rope, and the chalk can not be separated from the first slot in a short time, so that the chalk between the mounting cylinder and the blackboard can be fully used up, and the resource waste is further avoided; meanwhile, the elastic modulus of the first spring is larger than that of the second spring, so that the problem that part of chalk cannot be pushed out of the first slot due to premature closing of the round tightening structure is avoided, and the interest rate of the chalk is improved.
The invention has the following beneficial effects:
1. according to the multifunctional teaching aid for country teaching, four lines can be drawn in one action through the arrangement of the long strip plate, the sliding groove and the sliding block, the four lines are parallel to each other, the distances between the four lines are equal, the parallelism is good, English writing is facilitated, and the teaching efficiency is improved.
2. According to the multifunctional teaching aid for country teaching, due to the arrangement of the inserting rod, the second inserting groove and the second spring, on one hand, the second spring is used for extruding the mounting cylinder to the blackboard, so that all chalks can be in contact with the blackboard when the length of the chalks is not the same, the problem that part of chalks cannot draw lines due to different lengths of the chalks is further avoided, and four lines can be drawn at one time; on the other hand, after the chalk is shortened after the chalk is used for a period of time, the second spring can automatically press the chalk to the blackboard, and automatic adjustment of the chalk is achieved, so that frequent manual adjustment is not needed, and teaching efficiency is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the dust shield of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is an enlarged view of a portion of the dust shield of the present invention;
in the figure:
1. a strip plate; 2. a chute; 3. a slider; 4. a cross bar; 5. a vertical rod; 6. connecting blocks; 7. a dust shield; 8. a card slot; 9. a blackboard; 10. a locking sleeve; 11. locking the bolt; 12. a connecting rod; 13. a limiting rod; 14. an auxiliary sleeve; 15. inserting a rod; 16. mounting the cylinder; 17. chalk; 18. a first slot; 19. a first spring; 20. a second slot; 21. a second spring; 22. an arc-shaped elastic sheet; 23. threading holes; 24. an elastic cord; 25. hinging a shaft; 26. buckling; 27. and (6) buckling grooves.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, a multifunctional country teaching aid comprises a strip plate 1, wherein a T-shaped sliding chute 2 is arranged in the strip plate 1, the front end of the sliding chute 2 is open, and a sliding block 3 matched with the sliding chute 2 is arranged in the sliding chute; a cross rod 4 extending towards the front side is fixedly arranged at the front end of the sliding block 3, and a vertical rod 5 is fixedly arranged at the lower side of the free end of the cross rod 4; four groups of locking sleeves 10 capable of sliding up and down are sleeved outside the vertical rod 5, and locking bolts 11 are arranged on the locking sleeves 10; the chalk locking device is characterized in that a connecting rod 12 extending backwards is arranged on one side of the locking sleeve 10, a mounting cylinder 16 is connected to the free end of the connecting rod 12, a first slot 18 with a rear opening is formed in the mounting cylinder 16, and the inner diameter of the first slot 18 is matched with the outer diameter of a chalk 17.
When the chalk locking device is used, firstly, the chalks 17 are inserted into the corresponding mounting cylinders 16, then the locking sleeves 10 are slid to enable the locking sleeves 10 to be arranged at equal intervals, and the locking sleeves 10 are locked through the locking bolts 11, so that the distance between the chalks 17 is ensured to be the same; at last through a hand with slat 1 level press on blackboard 9, another hand stimulates 5 sideslip of montant, utilize horizontal pole 4 to drive slider 3 and remove in spout 2, because slat 1 is compressed tightly this moment, consequently can ensure that slider 3 is according to rectilinear movement, and then make the removal route of four chalks 17 also be sharp, once move and can draw four lines, and four lines are parallel to each other and the interval equals, the depth of parallelism is better, be favorable to writing of english, and the teaching efficiency is improved.
As an embodiment of the invention, two connecting blocks 6 are arranged at two ends of the upper part and the lower part of the vertical rod 5 in parallel, a vertically arranged limiting rod 13 is fixedly arranged behind the connecting blocks 6, the limiting rod 13 is positioned right behind the vertical rod 5, an auxiliary sleeve 14 is sleeved outside the limiting rod 13, and the connecting rod 12 is connected with one side of the auxiliary sleeve 14 and is vertically arranged between the limiting rods 13; the other side of the auxiliary sleeve 14 is connected with a mounting cylinder 16. Through the arrangement of the auxiliary sleeve 14 and the limiting rod 13, the installation cylinder 16 can be always perpendicular to the blackboard 9 in a two-point fixing mode, so that the chalk 17 is perpendicular to the blackboard 9, the problem that the chalk 17 is easy to break due to the fact that the chalk 17 inclines is solved, meanwhile, the stability of the installation cylinder 16 is improved, and the line drawing quality is improved.
As an embodiment of the invention, a dust hood 7 with a rear-side opening is arranged between the connecting blocks 6, the upper side and the lower side of the dust hood 7 are both provided with a U-shaped notch matched with the connecting blocks 6, the periphery of the connecting blocks 6 is provided with a clamping groove 8, and the dust hood is detachably connected with the connecting blocks 6 through the clamping groove 8 and the U-shaped notch. Through the arrangement of the dust hood 7, on one hand, the vertical rod 5 can be moved by holding the dust hood 7, so that the comfort level during holding is improved, the problem of scraping hands by the locking bolt 11 is avoided, and the problem of breaking the chalk 17 by pinching is also avoided; on the other hand, the dust shield 7 can reduce the amount of dust generated when the chalk 17 draws a line, and is beneficial to the health of teachers.
As an embodiment of the present invention, an insertion rod 15 is disposed on one side of the auxiliary sleeve 14 facing the mounting tube 16, a second slot 20 matched with the insertion rod 15 is disposed on the front side of the mounting tube 16, and a second spring 21 connecting the bottom of the second slot 20 and the end surface of the insertion rod 15 is disposed in the second slot 20; the auxiliary sleeve 14 is hinged to the insertion rod 15 through a hinge shaft 25, a buckle 26 is arranged on one side of the hinge shaft 25, a buckle groove 27 matched with the buckle 26 is arranged on the auxiliary sleeve 14, and the insertion rod 15 extends backwards and horizontally just when the buckle 26 is buckled with the buckle groove 27. Through the arrangement of the inserting rod 15, the second slot 20 and the second spring 21, on one hand, the second spring 21 is used for extruding the mounting tube 16 to the blackboard 9, so that all the chalks 17 can be ensured to be in contact with the blackboard 9 when the lengths of the chalks 17 are not the same, the problem that part of the chalks 17 cannot draw lines due to different lengths of the chalks 17 is further avoided, and four lines can be drawn at one time; on the other hand, after the chalk 17 is shortened after being used for a period of time, the second spring 21 can automatically press the chalk 17 to the blackboard 9, so that the automatic adjustment of the chalk 17 is realized, the frequent manual adjustment is not needed, and the teaching efficiency is improved; through the arrangement of the hinge shaft 25, the buckle 26 and the buckle groove 27, the installation barrel 16 can rotate by a certain angle, so that the chalk 17 can be conveniently replaced, meanwhile, the chalk 17 can gradually squeeze into the first slot 18 through friction with the blackboard 9 in the rotating process, the problem that the chalk 17 is easily broken when being directly and firmly pressed on the blackboard 9 is solved, in addition, the initial end part of the chalk 17 in the process of inclining to the vertical direction is abraded and smooth, and the noise when the chalk is used is reduced.
In one embodiment of the present invention, a first spring 19 is disposed in the first slot 18, and the elastic modulus of the first spring 19 is greater than the elastic modulus of the second spring 21, so as to gradually push the chalk 17 out of the first slot 18, thereby preventing the chalk 17 remaining in the first slot 18 from being too long, and improving the usage rate of the chalk 17. In order to prevent the chalk 17 from being separated from the first slot 18, the depth of the first slot 18 is deep in practical use, so that after the chalk 17 between the installation barrel 16 and the blackboard 9 is drawn, a part of the chalk 17 in the first slot 18 can be not fully utilized, and resource waste is caused.
As an embodiment of the present invention, a plurality of circular tightening structures surrounded by arc-shaped elastic pieces 22 are disposed at one end of the first slot 18 of the mounting cylinder 16, the arc-shaped elastic pieces 22 are each provided with an arc-shaped threading hole 23 coaxially arranged with the mounting cylinder 16, one of the arc-shaped elastic pieces 22 is fixedly connected with an elastic cord 24, and the elastic cord 24 sequentially passes through all the threading holes 23 and then extends along the outer wall of the mounting cylinder 16 to the auxiliary sleeve 14 to be fixedly connected with the auxiliary sleeve 14. Through the arrangement of the arc-shaped elastic sheet 22 and the elastic rope 24, as the drawn lines of the chalks 17 are shortened, the distance between the mounting cylinder 16 and the auxiliary sleeve 14 is increased, and further the arc-shaped elastic sheet 22 is deformed through tensioning of the elastic rope 24, so that the circular tightening structure is closed, and the friction force of the arc-shaped elastic sheet 22 is increased, the chalks 17 can be clamped in time when the chalks 17 are about to be separated from the first slot 18 through reasonably setting the length of the elastic rope 24, the chalks 17 can not be separated from the first slot 18 even in a short time, so that the chalks 17 between the mounting cylinder 16 and the blackboard 9 can be fully used, and the resource waste is further avoided; meanwhile, the elastic modulus of the first spring 19 is larger than that of the second spring 21, so that the problem that part of the chalk 17 cannot be pushed out of the first slot 18 due to premature closing of the circular tightening structure is avoided, and the interest rate of the chalk 17 is improved.
When the chalk locking device is used, firstly, the chalks 17 are inserted into the corresponding mounting cylinders 16, then the locking sleeves 10 are slid to enable the locking sleeves 10 to be arranged at equal intervals, and the locking sleeves 10 are locked through the locking bolts 11, so that the distance between the chalks 17 is ensured to be the same; finally, the strip plate 1 is horizontally pressed on the blackboard 9 by one hand, the vertical rod 5 is pulled by the other hand to transversely move, the sliding block 3 is driven by the cross rod 4 to move in the sliding groove 2, the strip plate 1 is pressed at the moment, so that the sliding block 3 can be ensured to move linearly, the moving paths of the four chalks 17 are also linear, four lines can be drawn by one-time action, the four lines are parallel to each other, the distances between the four lines are equal, the parallelism is good, the English writing is facilitated, and the teaching efficiency is improved; through the arrangement of the auxiliary sleeve 14 and the limiting rod 13, the installation cylinder 16 can be always vertical to the blackboard 9 in a two-point fixing mode, so that the chalk 17 is vertical to the blackboard 9, the problem that the chalk 17 is easy to break due to inclination is avoided, meanwhile, the stability of the installation cylinder 16 is improved, and the line drawing quality is improved; through the arrangement of the dust hood 7, on one hand, the vertical rod 5 can be moved by holding the dust hood 7, so that the comfort level during holding is improved, the problem of scraping hands by the locking bolt 11 is avoided, and the problem of breaking the chalk 17 by pinching is also avoided; on the other hand, the dust shield 7 can reduce the dust amount when the chalk 17 draws a line, which is beneficial to the health of teachers; through the arrangement of the inserting rod 15, the second slot 20 and the second spring 21, on one hand, the second spring 21 is used for extruding the mounting tube 16 to the blackboard 9, so that all the chalks 17 can be ensured to be in contact with the blackboard 9 when the lengths of the chalks 17 are not the same, the problem that part of the chalks 17 cannot draw lines due to different lengths of the chalks 17 is further avoided, and four lines can be drawn at one time; on the other hand, after the chalk 17 is shortened after being used for a period of time, the second spring 21 can automatically press the chalk 17 to the blackboard 9, so that the automatic adjustment of the chalk 17 is realized, the frequent manual adjustment is not needed, and the teaching efficiency is improved; through the arrangement of the hinge shaft 25, the buckle 26 and the buckle groove 27, the installation barrel 16 can rotate by a certain angle so as to conveniently replace the chalk 17, meanwhile, the chalk 17 can gradually squeeze into the first slot 18 through friction with the blackboard 9 in the rotating process, the problem that the chalk 17 is directly and firmly pressed on the blackboard 9 and is easy to break is solved, in addition, the initial end part of the chalk 17 is abraded and smooth in the process of inclining to be vertical, and the noise when the chalk is used is reduced; in order to prevent the chalk 17 from being separated from the first slot 18, when the chalk 17 is actually used, the depth of the first slot 18 is deep, so that after the chalk 17 between the installation barrel 16 and the blackboard 9 is drawn, a part of the chalk 17 in the first slot 18 can be not fully utilized, and resource waste is caused, therefore, the chalk 17 in the first slot 18 can be gradually popped out through the arrangement of the first spring 19, so that the chalk 17 is fully utilized, and the resource waste is avoided; through the arrangement of the arc-shaped elastic sheet 22 and the elastic rope 24, as the drawn line of the chalk 17 is shortened, the distance between the installation cylinder 16 and the auxiliary sleeve 14 is increased, and further the arc-shaped elastic sheet 22 is deformed through tensioning of the elastic rope 24, so that the circular tightening structure is closed, the friction force of the arc-shaped elastic sheet 22 is increased, and through reasonably setting the length of the elastic rope 24, the chalk 17 can be clamped and killed in time when the chalk 17 is about to be separated from the first slot 18, so that the chalk 17 cannot be separated from the first slot 18 in a short time, the chalk 17 between the installation cylinder 16 and the blackboard 9 can be fully used, and the resource waste is further avoided; meanwhile, the elastic modulus of the first spring 19 is larger than that of the second spring 21, so that the problem that part of the chalk 17 cannot be pushed out of the first slot 18 due to premature closing of the circular tightening structure is avoided, and the interest rate of the chalk 17 is improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A multifunctional teaching aid for village teaching is characterized by comprising a long strip plate (1), wherein a T-shaped sliding groove (2) is formed in the long strip plate (1), the front end of the sliding groove (2) is opened, and a sliding block (3) matched with the sliding groove is arranged in the sliding groove; a cross rod (4) extending towards the front side is fixedly arranged at the front end of the sliding block (3), and a vertical rod (5) is fixedly arranged at the lower side of the free end of the cross rod (4); four groups of locking sleeves (10) capable of sliding up and down are sleeved outside the vertical rod (5), and locking bolts (11) are arranged on the locking sleeves (10); locking sleeve (10) one side is provided with connecting rod (12) that extend backward, connecting rod (12) free end is connected with installation section of thick bamboo (16), installation section of thick bamboo (16) are provided with rear side open-ended first slot (18), the internal diameter of first slot (18) matches with the external diameter size of chalk (17).
2. The multifunctional country teaching aid according to claim 1, wherein two connecting blocks (6) are arranged at the upper and lower ends of the vertical rod (5) in parallel, a vertically arranged limiting rod (13) is fixedly arranged behind the connecting blocks (6), the limiting rod (13) is positioned right behind the vertical rod (5) and is externally sleeved with an auxiliary sleeve (14), and the connecting rod (12) is connected with one side of the auxiliary sleeve (14) and is vertically arranged between the limiting rods (13); the other side of the auxiliary sleeve (14) is connected with the mounting cylinder (16).
3. The multifunctional teaching aid for village teaching as claimed in claim 2, wherein a dust hood (7) with a rear-side opening is arranged between the connecting blocks (6), the upper side and the lower side of the dust hood (7) are provided with U-shaped notches matched with the connecting blocks (6), the periphery of the connecting blocks (6) is provided with clamping grooves (8), and the dust cover is detachably connected with the connecting blocks (6) through the clamping grooves (8) and the U-shaped notches.
4. A multifunctional village teaching aid according to claim 3, wherein said auxiliary sleeve (14) is provided with an insert rod (15) towards one side of the mounting cylinder (16), a second slot (20) matched with the insert rod (15) is provided in the front side of the mounting cylinder (16), and a second spring (21) connecting the bottom of the second slot (20) and the end surface of the insert rod (15) is provided in the second slot (20); auxiliary sleeve (14) are articulated with inserted bar (15) through articulated shaft (25), one side is provided with buckle (26) on articulated shaft (25), be provided with catching groove (27) that match with buckle (26) on auxiliary sleeve (14), and inserted bar (15) level backward extension just when buckle (26) and catching groove (27) block.
5. The multifunctional teaching aid for the village teaching according to claim 4, wherein a first spring (19) is arranged in the first slot (18), and the elastic modulus of the first spring (19) is greater than that of the second spring (21) and is used for gradually pushing the chalk (17) out of the first slot (18), so that the chalk (17) remained in the first slot (18) is prevented from being too long, and the use rate of the chalk (17) is improved.
6. The multifunctional teaching aid for village teaching as claimed in claim 5, wherein a plurality of circular tightening structures surrounded by arc-shaped elastic pieces (22) are arranged at one end of the mounting cylinder (16) located in the first slot (18), arc-shaped threading holes (23) coaxially arranged with the mounting cylinder (16) are formed in the arc-shaped elastic pieces (22), an elastic rope (24) is fixedly connected to one of the arc-shaped elastic pieces (22), and the elastic rope (24) sequentially penetrates through all the threading holes (23) and then extends to the auxiliary sleeve (14) along the outer wall of the mounting cylinder (16) to be fixedly connected with the auxiliary sleeve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416426.7A CN112477482A (en) | 2020-12-04 | 2020-12-04 | Multi-functional teaching aid for village teaching |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416426.7A CN112477482A (en) | 2020-12-04 | 2020-12-04 | Multi-functional teaching aid for village teaching |
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| CN112477482A true CN112477482A (en) | 2021-03-12 |
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| CN202011416426.7A Pending CN112477482A (en) | 2020-12-04 | 2020-12-04 | Multi-functional teaching aid for village teaching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114851750A (en) * | 2022-06-16 | 2022-08-05 | 杨俊惠 | English teaching device and method |
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| CN211730848U (en) * | 2020-02-19 | 2020-10-23 | 黄仕梅 | Scriber is used in college english teaching |
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| CN114851750A (en) * | 2022-06-16 | 2022-08-05 | 杨俊惠 | English teaching device and method |
| CN114851750B (en) * | 2022-06-16 | 2023-11-14 | 杨俊惠 | English teaching device and method thereof |
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