CN109859539B - Mobilizable english teaching assistance education device - Google Patents
Mobilizable english teaching assistance education device Download PDFInfo
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- CN109859539B CN109859539B CN201910250456.6A CN201910250456A CN109859539B CN 109859539 B CN109859539 B CN 109859539B CN 201910250456 A CN201910250456 A CN 201910250456A CN 109859539 B CN109859539 B CN 109859539B
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Abstract
The invention discloses a movable English teaching auxiliary education device, and particularly relates to the field of English teaching auxiliary education equipment. According to the invention, the hand wheel is rotated, the hand wheel drives the second special-shaped gear to rotate through the driving rod, so that the second special-shaped gear rotates through the first special-shaped gear to drive the supporting rod to rotate, the supporting rod drives the gear to rotate, the gear drives the chain to drive, the rotation directions and the rotation speeds of the three gears are equal, the gears at two ends of the operation box drive the driving rod to rotate, the driving rod drives the guide wheel to rotate, and the steering work is completed, when the operation box is pushed through the push rod, the direction of the guide wheel is changed, so that the universal wheel is changed, and the device can move stably.
Description
Technical Field
The invention relates to the technical field of English teaching auxiliary education equipment, in particular to a movable English teaching auxiliary education device.
Background
As is well known, an english teaching assistance educational tool is a device mainly used for teaching assistance in teaching institutions such as schools, and is widely used in related fields, and its expression forms are various, including various writing boards, display screens, scenario props, models, and the like; the supplementary educational aid of current english teaching includes support frame, clipboard and display screen, and display screen and clipboard are all installed on the support frame.
However, when the technical scheme is actually used, still more defects still exist, such as inconvenient movement, and when a few English teaching auxiliary education tools with universal wheels move, the problem that the English teaching auxiliary education tools are unstable when moving due to unstable steering of the universal wheels is solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a movable English teaching auxiliary education device, by rotating a hand wheel, the hand wheel drives a second special-shaped gear to rotate through a driving rod, so that the second special-shaped gear rotates through a first special-shaped gear to drive a supporting rod to rotate, the supporting rod drives the gear to rotate, the gear drives a chain to drive, the rotation directions and the rotation speeds of the three gears are equal, gears at two ends of an operation box drive a transmission rod to rotate, the transmission rod drives a guide wheel to rotate, and steering work is completed, when the operation box is pushed through a push rod, the direction of the guide wheel is changed, so that a universal wheel is changed, and the device can move stably.
In order to achieve the purpose, the invention provides the following technical scheme: a movable English teaching auxiliary education device comprises an operation box, wherein a nut is movably connected to the upper surface of the operation box, a threaded rod is connected to the inner wall of the nut in a threaded mode and penetrates through the nut and extends into the operation box, a connecting frame is fixedly connected to the lower surface of the threaded rod, a connecting rod is fixedly connected to the back end of the lower surface of the connecting frame, a bearing is fixedly connected to the surface of the connecting rod, a gear ring is fixedly connected to the outer wall of the bearing, a chain is in transmission connection with the surface of the gear ring, a supporting rod is fixedly connected to the lower surface of the gear ring in the operation box, a driving box is fixedly connected to the lower surface of the operation box and penetrates through the operation box and extends into the driving box, a first special-shaped gear is fixedly connected to the surface of the supporting rod, a second special-shaped gear is meshed with, the middle part of the second special-shaped gear is fixedly connected with a driving rod, the front side of the driving rod is fixedly connected with a hand wheel, the lower surfaces of gear rings at the two ends of the operating box and the back end of the lower surface of the connecting frame are fixedly connected with transmission rods, the lower surface of the operating box is fixedly connected with a supporting leg, the supporting leg is of a hollow structure, the transmission rods are movably connected to the inner wall of the supporting leg, the lower surface of the transmission rod is respectively and fixedly connected with a guide wheel and a universal wheel, and the lower surface of the supporting leg is fixedly;
the surface fixed connection of supporting leg has reset spring, reset spring's other end fixedly connected with movable ring, movable ring swing joint is on the surface of supporting leg, and the surface swing joint of supporting leg has unable adjustment base, unable adjustment base swing joint is at the lower surface of movable ring.
In a preferred embodiment, a fixed column is fixedly connected to the upper surface of the operation box, a protective sleeve is fixedly connected to the upper surface of the fixed column, and a teaching display screen is fixedly connected to the upper surface of the protective sleeve.
In a preferred embodiment, the upper surface of the inner wall of the driving box is fixedly connected with a fixing sleeve, the inner wall of the fixing sleeve is movably connected with the surface of the supporting rod, and the upper surface of the fixing sleeve is movably connected with the lower surface of the first special-shaped gear.
In a preferred embodiment, the driving rod penetrates through two ends of the driving box, and a supporting frame is movably sleeved on the surface of the driving rod and movably connected to the lower surface of the operation box.
In a preferred embodiment, the inner wall of supporting leg has seted up the spacing groove, the inner wall fixedly connected with damping spring of spacing groove, and damping spring's the other end fixedly connected with loose collar, the equal swing joint of loose collar and damping spring is on the surface of transfer line, the fixed surface of transfer line is connected with the retainer plate, and retainer plate swing joint is on the lower surface of loose collar, the equal swing joint in inner wall in spacing groove in the surface of loose collar and retainer plate.
In a preferred embodiment, the inner wall of the fixed base is provided with a movable groove, the inner wall of the movable groove is movably connected with an arc-shaped movable block, the arc-shaped movable block is fixedly connected to the surface of the supporting leg, and the movable groove is of a T-shaped structure.
In a preferred embodiment, the number of the transmission rods is four, the four transmission rods are divided into two groups, one group of transmission rods located at the back end of the operation box is fixedly connected to the lower surface of the gear ring, the lower surface of the group of transmission rods is fixedly connected with the upper surface of the guide wheel, one group of transmission rods located at the positive end of the operation box is fixedly connected to the lower surface of the connecting frame, and the lower surface of the group of transmission rods is fixedly connected with the upper surface of the universal wheel.
In a preferred embodiment, the connecting frame is of an H-shaped structure, and the threaded rod is fixedly connected to the middle of the connecting frame close to the positive end.
The invention has the technical effects and advantages that:
1. according to the invention, the hand wheel is rotated, the hand wheel drives the second special-shaped gear to rotate through the driving rod, so that the second special-shaped gear rotates through the first special-shaped gear to drive the supporting rod to rotate, the supporting rod drives the gear to rotate, the gear drives the chain to transmit, the rotating directions and rotating speeds of the three gears are equal, the gears at two ends of the operation box drive the driving rod to rotate, the driving rod drives the guide wheel to rotate, and steering work is completed, when the operation box is pushed through the push rod, the direction of the guide wheel is changed, so that the universal wheel is changed, and the device can move stably;
2. the nut is clockwise rotated on the upper surface of the operation box, the threaded rod in threaded connection with the nut is enabled to move upwards, the threaded rod drives the connecting frame to move upwards, the connecting frame drives the two groups of transmission rods and the supporting rod to move upwards through the connecting rod, the bearing and the gear ring respectively, the supporting rod is always located in the fixing sleeve, the fixing sleeve is enabled to provide a fixing effect for the supporting rod, the transmission rod moves upwards in the supporting leg, the fixing ring can extrude the movable ring in the limiting groove and compress the damping spring, at the moment, the transmission rod drives the guide wheel and the universal wheel to move upwards, and the guide wheel and the universal wheel are enabled to be in contact with the brake block, so that the guide wheel and the universal wheel are locked;
3. through rotatory unable adjustment base and make the arc movable block remove to the middle part in T font movable groove, drive the movable ring downstream under reset stretching effect of reset spring, thereby movable ring extrusion unable adjustment base downstream makes the arc movable block remove to the bottom in movable groove at the middle part in movable groove, and unable adjustment base's lower surface and ground contact play fixed effect this moment.
Drawings
Fig. 1 is a front view of the overall structure of the present invention.
Fig. 2 is a front sectional view of the overall structure of the present invention.
FIG. 3 is a front sectional view of the overall structure of the present invention.
Fig. 4 is a front sectional view of the driving box structure of the present invention.
Fig. 5 is a schematic view of the connecting frame structure of the present invention.
FIG. 6 is a partial front cross-sectional view of the support leg structure of the present invention.
Fig. 7 is a partial front sectional view of the fixing base structure of the present invention.
The reference signs are: the device comprises an operation box 1, a nut 2, a threaded rod 3, a connecting frame 4, a connecting rod 5, a bearing 6, a gear ring 7, a chain 8, a driving box 9, a supporting rod 10, a first special-shaped gear 11, a second special-shaped gear 12, a driving rod 13, a hand wheel 14, a transmission rod 15, a supporting leg 16, a guide wheel 17, a brake block 18, a reset spring 19, a movable ring 20, a fixed base 21, a fixed column 22, a protective sleeve 23, a teaching display screen 24, a fixed sleeve 25, a supporting frame 26, a limit groove 27, a damping spring 28, a fixed ring 29, a movable ring 30, a universal wheel 31, a movable groove 32 and an arc-shaped movable block 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to the mobilizable english teaching assistance education device that shows of fig. 1-6, including control box 1, fixed surface is connected with fixed column 22 on 1 of control box, the last fixed surface of fixed column 22 is connected with protective sheath 23, the last fixed surface of protective sheath 23 is connected with teaching display screen 24, with teaching display screen 24 through protective sheath 23 and fixed column 22 fixed connection at 1 upper surface of control box, conveniently carry out english teaching.
The upper surface of the operation box 1 is movably connected with a nut 2, the inner wall of the nut 2 is in threaded connection with a threaded rod 3, the threaded rod 3 penetrates through the operation box 1 and extends into the operation box, the lower surface of the threaded rod 3 is fixedly connected with a connecting frame 4, and the back end of the lower surface of the connecting frame 4 is fixedly connected with a connecting rod 5;
the connecting frame 4 is of an H-shaped structure, and the threaded rod 3 is fixedly connected to the middle part, close to the positive end, of the connecting frame 4;
the implementation mode is specifically as follows: the nut 2 is clockwise rotated on the upper surface of the operation box 1, and the threaded rod 3 in threaded connection with the nut 2 is enabled to move upwards, and the threaded rod 3 drives the connecting frame 4 to move upwards.
The surface of the connecting rod 5 is fixedly connected with a bearing 6, the outer wall of the bearing 6 is fixedly connected with a gear ring 7, the surface of the gear ring 7 is in transmission connection with a chain 8, the lower surface of the gear ring 7 in the middle of the operating box 1 is fixedly connected with a support rod 10, the lower surface of the operating box 1 is fixedly connected with a driving box 9, the support rod 10 penetrates through the operating box 1 and extends into the driving box 9, the surface of the support rod 10 is fixedly connected with a first special-shaped gear 11, the surface of the first special-shaped gear 11 is engaged with a second special-shaped gear 12, the middle of the second special-shaped gear 12 is fixedly connected with a driving rod 13, the front of the driving rod 13 is fixedly connected with a hand wheel 14, the lower surfaces of the gear rings 7 at two ends of the operating box 1 and the back end of the lower surface of the connecting frame 4 are both fixedly connected with a, the supporting leg 16 is of a hollow structure, the transmission rod 15 is movably connected to the inner wall of the supporting leg 16, and the lower surface of the transmission rod 15 is fixedly connected with the guide wheel 17 and the universal wheel 31 respectively;
the driving rod 13 penetrates through two ends of the driving box 9, a supporting frame 26 is movably sleeved on the surface of the driving rod 13, and the supporting frame 26 is movably connected to the lower surface of the operation box 1;
the number of the transmission rods 15 is four, the four transmission rods 15 are divided into two groups, one group of transmission rods 15 positioned at the back end of the operation box 1 are fixedly connected to the lower surface of the gear ring 7, the lower surfaces of the group of transmission rods 15 are fixedly connected with the upper surface of the guide wheel 17, one group of transmission rods 15 positioned at the positive end of the operation box 1 are fixedly connected to the lower surface of the connecting frame 4, and the lower surfaces of the group of transmission rods 15 are fixedly connected with the upper surface of the universal wheel 31;
the implementation mode is specifically as follows: the hand wheel 14 is rotated clockwise, under the action of the supporting frame 26 and the driving box 9, the hand wheel 14 can drive the driving rod 13 to rotate stably, the driving rod 13 drives the second special-shaped gear 12 to rotate, so that the second special-shaped gear 12 drives the first special-shaped gear 11 to rotate, and the steering work is completed, the first special-shaped gear 11 drives the support rod 10 to rotate clockwise, so that the support rod 10 drives the gear ring 7 to rotate clockwise, the gear ring 7 drives the chain 8 to transmit and enables the rotating directions and rotating speeds of the three gear rings 7 to be equal, the gear rings 7 at the two ends of the operating box 1 drive the transmission rod 15 to rotate clockwise, so that the transmission rod 15 drives the guide wheel 17 to rotate clockwise, and the steering work is completed, when the operation box 1 is pushed by the push rod, the direction of the guide wheel 17 is changed to cause the universal wheel 31 to be changed, the device can move stably, and the universal wheels 31 are prevented from moving unstably due to the influence of terrain.
The lower surface of the supporting leg 16 is fixedly connected with a brake block 18, the inner wall of the supporting leg 16 is provided with a limiting groove 27, the inner wall of the limiting groove 27 is fixedly connected with a damping spring 28, the other end of the damping spring 28 is fixedly connected with a movable ring 30, the movable ring 30 and the damping spring 28 are both movably connected to the surface of the transmission rod 15, the surface of the transmission rod 15 is fixedly connected with a fixed ring 29, the fixed ring 29 is movably connected to the lower surface of the movable ring 30, and the surfaces of the movable ring 30 and the fixed ring 29 are both movably connected to the inner wall of the limiting groove 27;
the upper surface of the inner wall of the driving box 9 is fixedly connected with a fixed sleeve 25, the inner wall of the fixed sleeve 25 is movably connected with the surface of the supporting rod 10, and the upper surface of the fixed sleeve 25 is movably connected with the lower surface of the first special-shaped gear 11.
The implementation mode is specifically as follows: the connecting frame 4 drives the two sets of transmission rods 15 and the support rod 10 to move upwards respectively through the connecting rod 5, the bearing 6 and the gear ring 7, the support rod 10 is always positioned in the fixing sleeve 25, so that the fixing sleeve 25 provides a fixing effect for the support rod 10, the transmission rod 15 moves upwards in the support leg 16, the fixing ring 29 extrudes the movable ring 30 in the limiting groove 27 and compresses the damping spring 28, at the moment, the transmission rod 15 drives the guide wheel 17 and the universal wheel 31 to move upwards, the guide wheel 17 and the universal wheel 31 are in contact with the brake block 18, the guide wheel 17 and the universal wheel 31 are locked, the device is prevented from moving, the purpose of temporary parking can be realized, when the device needs to be used again, the nut 2 is rotated anticlockwise, the threaded rod 3 drives the connecting frame 4 to move downwards, and the connecting frame 4 drives the two sets of transmission rods 15 and the support rod 10 to move downwards respectively through the connecting rod 5, the, the fixing sleeve 25 limits the first special-shaped gear 11, prevents the first special-shaped gear 11 from being not meshed with the second special-shaped gear 12, and the damping spring 28 resets and stretches to extrude the movable ring 30, enables the movable ring 30 to drive the fixing ring 29 to move downwards in the limiting groove 27, enables the transmission rod 15 to return to the original position, and enables the guide wheel 17 and the universal wheel 31 to be separated from the brake block 18 at the moment, so that the device can move stably.
According to the movable English teaching auxiliary education device shown in figures 1, 2, 3 and 7, a return spring 19 is fixedly connected to the surface of the supporting leg 16, a movable ring 20 is fixedly connected to the other end of the return spring 19, the movable ring 20 is movably connected to the surface of the supporting leg 16, a fixed base 21 is movably connected to the surface of the supporting leg 16, and the fixed base 21 is movably connected to the lower surface of the movable ring 20;
the inner wall of the fixed base 21 is provided with a movable groove 32, the inner wall of the movable groove 32 is movably connected with an arc-shaped movable block 33, the arc-shaped movable block 33 is fixedly connected to the surface of the supporting leg 16, and the movable groove 32 is of a T-shaped structure;
the implementation mode is specifically as follows: when the device is moved, the arc-shaped movable block 33 is movably connected to the top of the T-shaped movable groove 32, the fixed base 21 extrudes the return spring 19 through the movable ring 20, when the device is not used for a long time, the fixed base 21 is rotated and the arc-shaped movable block 33 is moved to the middle part of the T-shaped movable groove 32, the movable ring 20 is driven to move downwards under the action of the reset stretching of the return spring 19, the movable ring 20 extrudes the fixed base 21 to move downwards so that the arc-shaped movable block 33 moves to the bottom of the movable groove 32 in the middle part of the movable groove 32, at the moment, the lower surface of the fixed base 21 is contacted with the ground, a fixing effect is achieved, the purpose of long-time fixation can be achieved, when the device needs to be reused, the fixed base 21 is moved upwards and the return spring 19 is extruded through the movable ring 20, when the fixed base 21 drives the arc-shaped movable block 33 to move, the stationary base 21 is rotated and the arc-shaped movable block 33 is locked, thereby fixing the stationary base 21.
The working principle of the invention is as follows:
referring to the attached drawings 1, 2, 3, 4 and 5 in the specification, a hand wheel 14 is rotated to drive a driving rod 13 to rotate stably, the driving rod 13 drives a first special-shaped gear 11 to rotate through a second special-shaped gear 12 and complete steering work, the first special-shaped gear 11 drives a supporting rod 10 to rotate, the supporting rod 10 drives a gear ring 7 to rotate, the gear ring 7 drives a transmission rod 15 to rotate clockwise, the transmission rod 15 drives a guide wheel 17 to rotate clockwise, the direction of the guide wheel 17 is changed, so that a universal wheel 31 can be changed accordingly, the device can move stably, and the universal wheel 31 is prevented from moving unstably due to terrain influence;
referring to the attached drawings 1, 2, 3 and 6 of the specification, the nut 2 is rotated, the threaded rod 3 is enabled to move upwards, the threaded rod 3 drives the transmission rod 15 to move upwards through the connecting frame 4, the transmission rod 15 drives the guide wheel 17 and the universal wheel 31 to move upwards, and the guide wheel 17 and the universal wheel 31 are enabled to be in contact with the brake block 18, so that the guide wheel 17 and the universal wheel 31 are locked, the device is prevented from moving, and the purpose of temporary parking can be achieved;
referring to the attached drawings 1, 2, 3 and 7 in the specification, when the device moves, the fixed base 21 is rotated, the arc-shaped movable block 33 is moved to the middle of the T-shaped movable groove 32, the movable ring 20 is driven to move downwards under the reset stretching action of the reset spring 19, the movable ring 20 extrudes the fixed base 21 to move downwards, so that the arc-shaped movable block 33 moves to the bottom of the movable groove 32 in the middle of the movable groove 32, and at the moment, the lower surface of the fixed base 21 is in contact with the ground, so that the fixing effect is achieved, and the purpose of long-time fixing can be achieved.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides a mobilizable english teaching assistance education device, includes control box (1), its characterized in that: the upper surface of the operation box (1) is movably connected with a nut (2), the inner wall of the nut (2) is in threaded connection with a threaded rod (3), the threaded rod (3) penetrates through and extends to the inside of the operation box (1), the lower surface of the threaded rod (3) is fixedly connected with a connecting frame (4), the back end of the lower surface of the connecting frame (4) is fixedly connected with a connecting rod (5), the surface of the connecting rod (5) is fixedly connected with a bearing (6), the outer wall of the bearing (6) is fixedly connected with a gear ring (7), the surface of the gear ring (7) is in transmission connection with a chain (8), the lower surface of the gear ring (7) in the middle of the operation box (1) is fixedly connected with a supporting rod (10), the lower surface of the operation box (1) is fixedly connected with a driving box (9), and the supporting rod (10) penetrates through the operation box (1) and extends to, a first special-shaped gear (11) is fixedly connected to the surface of the supporting rod (10), a second special-shaped gear (12) is meshed with the surface of the first special-shaped gear (11), a driving rod (13) is fixedly connected to the middle of the second special-shaped gear (12), a hand wheel (14) is fixedly connected to the front of the driving rod (13), transmission rods (15) are fixedly connected to the lower surfaces of the gear rings (7) at the two ends of the operating box (1) and the back end of the lower surface of the connecting frame (4), the lower surface of the operating box (1) is fixedly connected with a supporting leg (16), the supporting leg (16) is of a hollow structure, the transmission rod (15) is movably connected with the inner wall of the supporting leg (16), the lower surface of the transmission rod (15) is respectively and fixedly connected with a guide wheel (17) and a universal wheel (31), the lower surface of the supporting leg (16) is fixedly connected with a brake block (18);
the fixed surface of supporting leg (16) is connected with reset spring (19), the other end fixedly connected with activity circle (20) of reset spring (19), activity circle (20) swing joint is on the surface of supporting leg (16), and the surperficial swing joint of supporting leg (16) has unable adjustment base (21), unable adjustment base (21) swing joint is at the lower surface of activity circle (20).
2. A mobile english teaching assistance education device according to claim 1, characterized in that: fixed surface is connected with fixed column (22) on operation box (1), the last fixed surface of fixed column (22) is connected with protective sheath (23), the last fixed surface of protective sheath (23) is connected with teaching display screen (24).
3. A mobile english teaching assistance education device according to claim 1, characterized in that: the upper surface of the inner wall of the driving box (9) is fixedly connected with a fixing sleeve (25), the inner wall of the fixing sleeve (25) is movably connected with the surface of the supporting rod (10), and the upper surface of the fixing sleeve (25) is movably connected with the lower surface of the first special-shaped gear (11).
4. A mobile english teaching assistance education device according to claim 1, characterized in that: the driving rod (13) penetrates through two ends of the driving box (9), a supporting frame (26) is sleeved on the surface of the driving rod (13) in a movable mode, and the supporting frame (26) is movably connected to the lower surface of the operation box (1).
5. A mobile english teaching assistance education device according to claim 1, characterized in that: spacing groove (27) have been seted up to the inner wall of supporting leg (16), inner wall fixedly connected with damping spring (28) of spacing groove (27), and the other end fixedly connected with loose collar (30) of damping spring (28), the equal swing joint in loose collar (30) and damping spring (28) is on the surface of transfer line (15), the fixed surface of transfer line (15) is connected with retainer plate (29), and retainer plate (29) swing joint is at the lower surface of loose collar (30), the equal swing joint in surface of loose collar (30) and retainer plate (29) is at the inner wall of spacing groove (27).
6. A mobile english teaching assistance education device according to claim 1, characterized in that: activity groove (32) have been seted up to the inner wall of unable adjustment base (21), and the inner wall swing joint in activity groove (32) has arc movable block (33), and arc movable block (33) fixed connection is on the surface of supporting leg (16), activity groove (32) are T font structure.
7. A mobile english teaching assistance education device according to claim 1, characterized in that: the number of transfer line (15) is four, and four transfer lines (15) divide into two sets ofly, is located a set of transfer line (15) fixed connection of control box (1) back end is at the lower surface of gear circle (7), and this group the lower surface of transfer line (15) and the last fixed surface of leading wheel (17) are connected, are located a set of transfer line (15) fixed connection of control box (1) positive end is at the lower surface of link (4), and this group the lower surface of transfer line (15) and the last fixed surface of universal wheel (31) are connected.
8. A mobile english teaching assistance education device according to claim 1, characterized in that: the connecting frame (4) is of an H-shaped structure, and the threaded rod (3) is fixedly connected to the middle of the connecting frame (4) close to the positive end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910250456.6A CN109859539B (en) | 2019-03-29 | 2019-03-29 | Mobilizable english teaching assistance education device |
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|---|---|---|---|
| CN201910250456.6A CN109859539B (en) | 2019-03-29 | 2019-03-29 | Mobilizable english teaching assistance education device |
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| CN109859539A CN109859539A (en) | 2019-06-07 |
| CN109859539B true CN109859539B (en) | 2021-03-05 |
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| KR100421423B1 (en) * | 2001-02-10 | 2004-03-09 | 한국과학기술원 | An Electric Steering Wheel Device Using A Semi Active Actuator |
| CN201640960U (en) * | 2009-10-15 | 2010-11-24 | 仇明华 | Functional tea table |
| CN204092385U (en) * | 2014-09-12 | 2015-01-14 | 李敏 | Multifunction nursing bed |
| CN206586590U (en) * | 2016-12-09 | 2017-10-27 | 范鋆 | A kind of new foreign language teaching Table for studing speech sounds |
| CN206628095U (en) * | 2017-02-22 | 2017-11-10 | 湖南生物机电职业技术学院 | A kind of portable ideological and politics teaching teaching aid |
| CN208573264U (en) * | 2018-01-29 | 2019-03-05 | 苏州市永固金属制品有限公司 | A kind of Medical cabinet support device |
| CN108230830A (en) * | 2018-03-16 | 2018-06-29 | 江苏海事职业技术学院 | A kind of Multifunctional teaching device |
| CN108688741A (en) * | 2018-07-03 | 2018-10-23 | 芜湖中科智捷信息科技有限责任公司 | A kind of guider of AGV trolleies |
| CN208584992U (en) * | 2018-07-26 | 2019-03-08 | 张海妮 | A kind of applied mathematics, which is solved a problem, uses instructional device |
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