CN207190605U - A kind of English special blackboard device - Google Patents

Abstract

The utility model relates to a blackboard device, in particular to an English-specific blackboard device. The technical problem to be solved by the utility model is to provide an English special blackboard device. In order to solve the above-mentioned technical problems, the utility model provides such a special blackboard device for English, including a base plate, a lifting device, a special blackboard, a moving device and a blackboard eraser, etc.; A special blackboard is arranged above the lifting device, a mobile device is provided above the front of the special blackboard, and a blackboard eraser is provided at the bottom of the mobile device. The utility model achieves the effect of drawing standard four-line grids and adjusting the height according to needs. When the blackboard eraser is wiping the special blackboard, a large amount of chalk dust is easy to drop, so as not to let the chalk dust fly around.

Description

An English-specific blackboard device

technical field

The utility model relates to a blackboard device, in particular to an English-specific blackboard device.

Background technique

The origin of English letters and their homology with Chinese characters English letters originate from pictograms, front view or side view, which are simplified graphics of visual results, and their order from A to Z is formulated according to importance or order of discovery, Its pronunciation is homologous to the pronunciation of Chinese characters, and they are both a very small part of the cosmic sounds that humans can use.

The blackboard does not specifically refer to the black board surface. In the traditional sense, it is a plane that can be written repeatedly. The board surface is hard and is mostly used for teaching. It is made of wood or frosted glass, and specific writing materials such as chalk can be used on it. Writing, mostly black, dark green, white or beige.

In order to allow students to learn English better, teachers should pay attention to the writing of English letters when teaching English. English letters should be written in the standard four-line grid. Most of the English teaching now has irregular writing and no strict writing In the four-line grid, it is easy for students to ignore the writing standards of English letters when learning English. Therefore, it is urgent to develop a special English blackboard device that draws a standard four-line grid and can adjust the height according to needs.

Utility model content

(1) Technical problems to be solved

In order to overcome the shortcomings of irregular writing in most of the current English teaching, the utility model does not strictly write in the four-line grid, which makes it easy for students to ignore the standard writing of English letters when learning English. The technical problem is to provide an English-only blackboard device.

(2) Technical solution

In order to solve the above-mentioned technical problems, the utility model provides such a special English blackboard device, which includes a base plate, a lifting device, a special blackboard, a moving device and a blackboard eraser. A special blackboard is arranged above the lifting device, a moving device is arranged above the front part of the special blackboard, and a blackboard eraser is arranged at the bottom of the moving device.

Preferably, the lifting device includes a first bracket, a small pole, an electric reel, a slide rail, an upper slider, a lower slider and a pull cord. The left and right sides of the top of the bottom plate are symmetrically provided with the first brackets, and the first bracket on the left is The right side of the bracket and the left side of the first bracket on the right are symmetrically provided with grooves, and the upper and lower sides of the left wall in the left groove and the upper and lower sides of the right wall in the right groove are symmetrically provided with small support rods. The right end of the pole and the left end of the right small pole are symmetrically equipped with electric winding wheels, and the left wall in the left groove and the right wall in the right groove are symmetrically equipped with slide rails, and the slide rails are located between the upper and lower small poles. , there are upper slider and lower slider on the slide rail, a pull rope is wound on the electric reel, the pull rope is connected with the upper slider and the lower slider, and the left upper slider and the lower slider are connected with a special blackboard on the right The left side is connected, and the right upper and lower sliders are connected to the right side of the dedicated blackboard.

Preferably, the moving device includes a second bracket, a left bearing seat, a right bearing seat, a first motor, a screw and a nut, a second bracket is arranged above the front of the special blackboard, and the bottom of the second bracket is sequentially arranged from left to right. The left bearing seat, the right bearing seat and the first motor, the left bearing seat and the right bearing seat are equipped with screw mandrels, the right end of the screw mandrel is connected with the left end of the first motor, the screw mandrel is provided with a nut, the screw mandrel cooperates with the nut, and the bottom of the nut Connect with the top of the blackboard eraser.

Preferably, it also includes a first bearing seat, a second motor, a rotating shaft, a connecting plate, an ash collection box and a sloping plate. The first bearing seat and the second motor are arranged in the middle of the bottom of the special blackboard, and the first bearing seat is located on the second motor. On the left, a rotating shaft is installed on the first bearing seat, the right end of the rotating shaft is connected with the left end of the second motor, the bottom of the rotating shaft is provided with a connecting plate, the bottom of the connecting plate is provided with an ash collecting box, and the inner bottom of the ash collecting box is provided with a sloping plate.

Preferably, it also includes a large strut, an upper cylinder and a lower cylinder, a large strut is provided in front of the bottom of the nut, an upper cylinder and a lower cylinder are arranged at the rear of the large strut, the upper cylinder is located above the lower cylinder, and the upper cylinder and the lower cylinder The rear end is connected with the front part of the blackboard eraser.

Preferably, the front part of the special blackboard is painted with four-line grids for English.

Preferably, the large pole is made of stainless steel.

Preferably, the bottom plate is made of Q235 steel.

Working principle: In order to facilitate students to learn English better, it is necessary to fill in the English letters in a specific four-line grid, so that students can learn English more standard and standardized. The teacher places the device in front of the classroom, and the teacher can adjust the special purpose through the lifting device. The height of the blackboard is adapted to the sight height of the students. During English teaching, when the teacher needs to wipe the blackboard, the teacher can drive the blackboard eraser to move left and right through the mobile device to wipe the special blackboard clean.

Because the lifting device includes the first bracket, groove, small pole, electric reel, slide rail, upper slider, lower slider and stay cord, the left and right sides of the top of the bottom plate are symmetrically provided with the first bracket, and the left side is the second bracket. The right side of the first bracket and the left side of the first bracket are symmetrically provided with grooves, the upper and lower sides of the left wall in the left groove and the upper and lower sides of the right wall in the right groove are symmetrically provided with small support rods, and the left small The right end of the pole and the left end of the small pole on the right are symmetrically equipped with electric winding wheels, the left wall in the left groove and the right wall in the right groove are symmetrically equipped with slide rails, and the slide rails are located between the small poles on the upper and lower sides. Between, there are upper slider and lower slider on the slide rail, a pull cord is wound on the electric reel, and the pull rope is connected with the upper slider and the lower slider, and the left upper slider and the lower slider are connected with the special The left side of the blackboard is connected, and the left side of the upper and lower sliders on the right is connected to the right side of the special blackboard, so when the teacher needs to use the lifting device, the teacher can start the electric winding wheel to start working, when the upper electric winding wheel is retracted When the lower electric reel puts the pull rope, the upper slider and the lower slider move upward accordingly, making the special blackboard move upward accordingly. When the upper electric reel puts the pull rope, the lower electric reel retracts the pull rope , the upper slider and the lower slider move down accordingly, making the special blackboard move down accordingly, thus making it very convenient for the teacher to adjust the height of the special blackboard.

Because the moving device includes a second support, a left bearing seat, a right bearing seat, a first motor, a screw and a nut, a second support is arranged above the front of the special blackboard, and a left bearing is arranged at the bottom of the second support from left to right. seat, the right bearing seat and the first motor, the left bearing seat and the right bearing seat are provided with a screw mandrel, the right end of the screw mandrel is connected with the left end of the first motor, the screw mandrel is provided with a nut, the screw mandrel is matched with the nut, and the bottom of the nut is connected with the blackboard The top of the eraser is connected, so when the teacher needs to move the blackboard eraser left and right, the teacher starts the first motor to rotate, when the first motor drives the screw to rotate forward, the nut moves to the left accordingly, when the first motor drives the screw to reverse, The nut then moves to the right, so that the blackboard eraser moving left and right can clean the special blackboard, and then when the blackboard eraser moves to the left or right end of the special blackboard, the teacher can turn off the first motor. English is taught on a dedicated blackboard.

Because it also includes the first bearing seat, the second motor, the rotating shaft, the connecting plate, the ash collection box and the inclined plate, the first bearing seat and the second motor are arranged in the middle of the bottom of the special blackboard, and the first bearing seat is located on the left side of the second motor , the first bearing seat is equipped with a rotating shaft, the right end of the rotating shaft is connected with the left end of the second motor, the bottom of the rotating shaft is provided with a connecting plate, the bottom of the connecting plate is provided with an ash collecting box, and the inner bottom of the ash collecting box is provided with a slanting plate, so when the blackboard eraser is on the When wiping the special blackboard, it is easy to drop a lot of chalk dust. In order not to let the chalk dust fly around, the chalk dust can fall into the dust collection box. The direction of rotation makes the front of the ash collection box tilt downward. Since the bottom of the ash collection box is equipped with a sloping plate, the slant plate can make the chalk dust gather in front of the bottom of the ash collection box, so that it is convenient for the teacher to remove the chalk in the ash collection box. The ash is removed at one time. After the teacher cleans up the chalk dust in the ash collection box, the teacher starts the second motor to drive the rotating shaft to rotate in the opposite direction, so that the ash collection box can rotate and reset accordingly.

Because it also includes a large strut, an upper cylinder and a lower cylinder, the front of the bottom of the nut is provided with a large strut, and the rear of the large strut is provided with an upper cylinder and a lower cylinder, the upper cylinder is located above the lower cylinder, and the upper cylinder and the lower cylinder rear end It is connected to the front of the blackboard eraser, so people can start the upper cylinder and the lower cylinder to extend, so that the blackboard eraser is in closer contact with the special blackboard, so that the blackboard eraser can wipe the special blackboard more cleanly, when teachers do not need to use blackboard erasers At the same time, people start the upper cylinder and the lower cylinder to shorten and reset.

In order to clearly illustrate the working principle of this device, there is no guide device for the screw nut in the attached drawings (the guide device for the screw nut is generally a slide rail slider or a linear guide rail). In the actual work of this device , the guide device of the screw nut is necessary, otherwise the screw rotates, and the nut will also rotate. The guide device of the screw nut is used to restrict the nut from rotating with the screw, forcing the nut to move along the axial direction of the screw , because when the technicians in the mechanical field see the screw nut device, they must know that when actually making the device, the guide device of the screw nut is added, and the guide device of the screw nut does not need to be creatively worked by the mechanical field personnel. Labor can be realized, hereby explain.

The control mode of the utility model is automatically controlled by the controller, and the control circuit of the controller can be realized through simple programming by those skilled in the art, which belongs to the common knowledge in the field, and the utility model is mainly used to protect mechanical devices, so The utility model no longer explains the control mode and the circuit connection in detail.

(3) Beneficial effects

The utility model achieves the effect of drawing a four-line grid with standard specifications, and the height can be adjusted according to needs. When the blackboard eraser is wiping the special blackboard, it is easy to drop a large amount of chalk dust. In order to prevent the chalk dust from flying around, the chalk dust can fall into the In the ash collection box, the teacher can adjust the height of the special blackboard through the lifting device to adapt to the sight height of the students.

Description of drawings

Fig. 1 is a front structural schematic diagram of the utility model.

Fig. 2 is a front structural schematic diagram of the lifting device of the present invention.

Fig. 3 is a front structural schematic diagram of the mobile device of the present invention.

Fig. 4 is a schematic structural diagram of the first partial front view of the utility model.

Fig. 5 is a schematic structural diagram of the second partial front view of the utility model.

The marks in the accompanying drawings are: 1-bottom plate, 2-lifting device, 20-the first bracket, 21-groove, 22-small pole, 23-electric reel, 24-slide rail, 25-upper slider , 26-lower slider, 27-drawing rope, 3-special blackboard, 4-moving device, 40-second bracket, 41-left bearing seat, 42-right bearing seat, 43-first motor, 44-screw , 45-nut, 5-blackboard eraser, 6-first bearing seat, 7-second motor, 8-rotating shaft, 9-connecting plate, 10-ash collecting box, 11-slope plate, 12-big support rod, 13 - upper cylinder, 14 - lower cylinder.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Example 1

A special blackboard device for English, as shown in Figure 1-5, includes a base plate 1, a lifting device 2, a special blackboard 3, a moving device 4 and a blackboard eraser 5, and the left and right sides of the top of the base plate 1 are symmetrically provided with a lifting device 2. A special blackboard 3 is provided above between the lifters 2 of both sides, a mobile device 4 is provided above the special blackboard 3 front, and a blackboard eraser 5 is provided at the bottom of the mobile device 4 .

Example 2

A special blackboard device for English, as shown in Figure 1-5, includes a base plate 1, a lifting device 2, a special blackboard 3, a moving device 4 and a blackboard eraser 5, and the left and right sides of the top of the base plate 1 are symmetrically provided with a lifting device 2. A special blackboard 3 is provided above between the lifters 2 of both sides, a mobile device 4 is provided above the special blackboard 3 front, and a blackboard eraser 5 is provided at the bottom of the mobile device 4 .

The lifting device 2 includes a first support 20, a small pole 22, an electric reel 23, a slide rail 24, an upper slider 25, a lower slider 26 and a stay cord 27, and the left and right sides of the bottom plate 1 are symmetrically provided with first Bracket 20, the right side of the first bracket 20 on the left and the left side of the first bracket 20 on the right are symmetrically provided with grooves 21, the upper and lower sides of the left wall in the left groove 21 and the upper and lower sides of the right wall in the right groove 21 All symmetrically be provided with small support rod 22, left side small support rod 22 right ends and right side small support rod 22 left ends are symmetrically provided with electric reel 23, left side groove 21 inner left wall and right side groove 21 inner right wall Symmetry is provided with slide rail 24, and slide rail 24 is positioned between the small strut 22 of upper and lower two sides, and slide rail 24 is provided with upper slider 25 and lower slider 26, and stay cord 27 is wound on electric reel 23, Stay cord 27 is connected with upper slide block 25 and lower slide block 26, left upper slide block 25 and lower slide block 26 right sides are connected with special blackboard 3 left sides, right upper slide block 25 and lower slide block 26 left sides are connected with The dedicated blackboard 3 is connected on the right side.

Example 3

A special blackboard device for English, as shown in Figure 1-5, includes a base plate 1, a lifting device 2, a special blackboard 3, a moving device 4 and a blackboard eraser 5, and the left and right sides of the top of the base plate 1 are symmetrically provided with a lifting device 2. A special blackboard 3 is provided above between the lifters 2 of both sides, a mobile device 4 is provided above the special blackboard 3 front, and a blackboard eraser 5 is provided at the bottom of the mobile device 4 .

The lifting device 2 includes a first support 20, a small pole 22, an electric reel 23, a slide rail 24, an upper slider 25, a lower slider 26 and a stay cord 27, and the left and right sides of the bottom plate 1 are symmetrically provided with first Bracket 20, the right side of the first bracket 20 on the left and the left side of the first bracket 20 on the right are symmetrically provided with grooves 21, the upper and lower sides of the left wall in the left groove 21 and the upper and lower sides of the right wall in the right groove 21 All symmetrically be provided with small support rod 22, left side small support rod 22 right ends and right side small support rod 22 left ends are symmetrically provided with electric reel 23, left side groove 21 inner left wall and right side groove 21 inner right wall Symmetry is provided with slide rail 24, and slide rail 24 is positioned between the small strut 22 of upper and lower two sides, and slide rail 24 is provided with upper slider 25 and lower slider 26, and stay cord 27 is wound on electric reel 23, Stay cord 27 is connected with upper slide block 25 and lower slide block 26, left upper slide block 25 and lower slide block 26 right sides are connected with special blackboard 3 left sides, right upper slide block 25 and lower slide block 26 left sides are connected with The dedicated blackboard 3 is connected on the right side.

Mobile device 4 comprises second support 40, left bearing seat 41, right bearing seat 42, first motor 43, screw mandrel 44 and nut 45, is provided with second support 40 above special blackboard 3 front, second support 40 bottoms Left bearing seat 41, right bearing seat 42 and first motor 43 are arranged successively from left to right, and screw mandrel 44 is installed on left bearing seat 41 and right bearing seat 42, and screw mandrel 44 right ends are connected with first motor 43 left ends, Screw mandrel 44 is provided with nut 45, and screw mandrel 44 cooperates with nut 45, and the bottom of nut 45 is connected with blackboard eraser 5 tops.

Example 4

A special blackboard device for English, as shown in Figure 1-5, includes a base plate 1, a lifting device 2, a special blackboard 3, a moving device 4 and a blackboard eraser 5, and the left and right sides of the top of the base plate 1 are symmetrically provided with a lifting device 2. A special blackboard 3 is provided above between the lifters 2 of both sides, a mobile device 4 is provided above the special blackboard 3 front, and a blackboard eraser 5 is provided at the bottom of the mobile device 4 .

The lifting device 2 includes a first support 20, a small pole 22, an electric reel 23, a slide rail 24, an upper slider 25, a lower slider 26 and a stay cord 27, and the left and right sides of the bottom plate 1 are symmetrically provided with first Bracket 20, the right side of the first bracket 20 on the left and the left side of the first bracket 20 on the right are symmetrically provided with grooves 21, the upper and lower sides of the left wall in the left groove 21 and the upper and lower sides of the right wall in the right groove 21 All symmetrically be provided with small support rod 22, left side small support rod 22 right ends and right side small support rod 22 left ends are symmetrically provided with electric reel 23, left side groove 21 inner left wall and right side groove 21 inner right wall Symmetry is provided with slide rail 24, and slide rail 24 is positioned between the small strut 22 of upper and lower two sides, and slide rail 24 is provided with upper slider 25 and lower slider 26, and stay cord 27 is wound on electric reel 23, Stay cord 27 is connected with upper slide block 25 and lower slide block 26, left upper slide block 25 and lower slide block 26 right sides are connected with special blackboard 3 left sides, right upper slide block 25 and lower slide block 26 left sides are connected with The dedicated blackboard 3 is connected on the right side.

Mobile device 4 comprises second support 40, left bearing seat 41, right bearing seat 42, first motor 43, screw mandrel 44 and nut 45, is provided with second support 40 above special blackboard 3 front, second support 40 bottoms Left bearing seat 41, right bearing seat 42 and first motor 43 are arranged successively from left to right, and screw mandrel 44 is installed on left bearing seat 41 and right bearing seat 42, and screw mandrel 44 right ends are connected with first motor 43 left ends, Screw mandrel 44 is provided with nut 45, and screw mandrel 44 cooperates with nut 45, and the bottom of nut 45 is connected with blackboard eraser 5 tops.

Also include the first bearing seat 6, the second motor 7, the rotating shaft 8, the connecting plate 9, the ash collecting box 10 and the inclined plate 11, the middle of the bottom of the special blackboard 3 is provided with the first bearing seat 6 and the second motor 7, the first The bearing seat 6 is located on the left side of the second motor 7, the first bearing seat 6 is equipped with a rotating shaft 8, the right end of the rotating shaft 8 is connected with the left end of the second motor 7, the bottom of the rotating shaft 8 is provided with a connecting plate 9, and the bottom of the connecting plate 9 is provided with a dust collector Box 10, the inner bottom of ash collecting box 10 is provided with inclined plate 11.

Also comprise big strut 12, upper cylinder 13 and lower cylinder 14, nut 45 bottom front is provided with big strut 12, and big strut 12 rear portion is provided with upper cylinder 13 and lower cylinder 14, and upper cylinder 13 is positioned at lower cylinder 14 Above, the upper cylinder 13 and the lower cylinder 14 rear ends are connected with the blackboard eraser 5 front.

The front portion of the special blackboard 3 is painted with a four-line grid in English.

The big pole 12 is made of stainless steel.

The base plate 1 is made of Q235 steel.

Working principle: In order to facilitate students to learn English better, it is necessary to fill in the English letters in a specific four-line grid, so that students can learn English more standard and standardized. The teacher places the device in front of the classroom, and the teacher can adjust it through the lifting device 2 The height of special-purpose blackboard 3, to adapt to the sight height of students, when carrying out English teaching, when teacher needs to wipe blackboard, teacher can drive blackboard eraser 5 to move left and right by moving device 4 and special-purpose blackboard 3 is wiped clean.

Because the lifting device 2 includes a first support 20, a groove 21, a small pole 22, an electric reel 23, a slide rail 24, an upper slider 25, a lower slider 26 and a stay cord 27, the left and right sides of the bottom plate 1 top The first bracket 20 is symmetrically arranged, and the left side of the first bracket 20 on the left side and the left side of the first bracket 20 on the right side are symmetrically provided with grooves 21. The upper and lower sides of the right wall are symmetrically provided with small support rods 22, and the left side small support rods 22 right ends and the right side small support rods 22 left ends are symmetrically provided with electric reels 23, and the left wall and the right side are concave in the left side groove 21. The inner right wall of the groove 21 is symmetrically provided with a slide rail 24, and the slide rail 24 is positioned between the small poles 22 of the upper and lower sides. Stay cord 27 is arranged, and stay cord 27 is connected with upper slide block 25 and lower slide block 26, and left upper slide block 25 and lower slide block 26 right side are connected with special-purpose blackboard 3 left side, and right upper slide block 25 and slide down The left side of the block 26 is connected with the right side of the special blackboard 3, so when the teacher needs to use the lifting device 2, the teacher can start the electric reel 23 to start working. 23 When the stay cord 27 is put, the upper slider 25 and the lower slider 26 move upwards thereupon, so that the special blackboard 3 moves up thereupon, and when the upper electric reel 23 puts the stay cord 27, the lower electric reel 23 retracts During rope 27, upper slide block 25 and lower slide block 26 move down thereupon, make special blackboard 3 move down thereupon, make the teacher can adjust the height of special blackboard 3 very conveniently thus.

Because mobile device 4 comprises second support 40, left bearing seat 41, right bearing seat 42, first motor 43, screw mandrel 44 and nut 45, special blackboard 3 front tops are provided with second support 40, and second support 40 The bottom is provided with left bearing seat 41, right bearing seat 42 and first motor 43 successively from left to right, and screw mandrel 44 is installed on left bearing seat 41 and right bearing seat 42, and the right end of screw mandrel 44 is connected with the left end of first motor 43 , the screw mandrel 44 is provided with a nut 45, the screw mandrel 44 cooperates with the nut 45, and the bottom of the nut 45 is connected with the blackboard eraser 5 top, so when the teacher needs to move the blackboard eraser 5 left and right, the teacher starts the first motor 43 to rotate, when the first When the motor 43 drives the screw mandrel 44 to rotate forward, the nut 45 moves to the left thereupon; Special blackboard 3 is wiped clean, then when blackboard eraser 5 moves to special blackboard 3 left end or right end, teacher closes first motor 43 and gets final product, and blackboard eraser 5 can not block teacher's teaching English on special blackboard 3.

Because the first bearing seat 6, the second motor 7, the rotating shaft 8, the connecting plate 9, the ash collecting box 10 and the inclined plate 11 are also included, the first bearing seat 6 and the second motor 7 are arranged in the middle of the bottom of the special blackboard 3, and the first bearing seat 6 and the second motor 7 are provided. A bearing seat 6 is located on the left side of the second motor 7, a rotating shaft 8 is installed on the first bearing seat 6, the right end of the rotating shaft 8 is connected with the left end of the second motor 7, the bottom of the rotating shaft 8 is provided with a connecting plate 9, and the bottom of the connecting plate 9 is provided with a set Ash box 10, the inner bottom of the ash box 10 is provided with a slant plate 11, so when the blackboard eraser 5 is wiping the special blackboard 3, it is easy to drop a large amount of chalk dust, in order not to let the chalk dust fly around, the chalk dust can fall into the ash collection box 10, when the chalk dust in the ash collection box 10 reaches a certain amount, the teacher starts the second motor 7 to drive the rotating shaft 8 to rotate in the positive direction, so that the front part of the ash collection box 10 is inclined downward. Slant plate 11, slant plate 11 can make chalk dust gather in front of the inner bottom of ash collecting box 10, thus facilitates the teacher to remove the chalk dust in ash collecting box 10 at one time, when the teacher cleans up the chalk dust in ash collecting box 10 After cleaning, the teacher starts the second motor 7 to drive the rotating shaft 8 to rotate in the opposite direction, so that the ash collecting box 10 rotates thereupon and resets.

Because also include big strut 12, upper cylinder 13 and lower cylinder 14, nut 45 bottom front is provided with big strut 12, and big strut 12 rear portion is provided with upper cylinder 13 and lower cylinder 14, and upper cylinder 13 is positioned at lower cylinder Above 14, the upper cylinder 13 and the lower cylinder 14 rear end are connected with the blackboard eraser 5 front, so people can start the upper cylinder 13 and the lower cylinder 14 to elongate, making the blackboard eraser 5 contact with the special blackboard 3 more closely, thus facilitating The blackboard eraser 5 wipes the special blackboard 3 more cleanly, and when the teacher does not need to use the blackboard eraser 5, people start the upper cylinder 13 and the lower cylinder 14 to shorten and reset.

In order to clearly illustrate the working principle of the device, there is no guiding device for the screw rod 44 and the nut 45 in the accompanying drawings (the guiding device for the screw rod 44 and the nut 45 is generally a slide rail 24 slider or a linear guide rail). In the actual work of the device, the guiding device of the screw mandrel 44 and the nut 45 is necessary, otherwise the screw mandrel 44 rotates, and the nut 45 will also rotate accordingly. The guiding device of the screw mandrel 44 and the nut 45 is used to restrict the nut 45 from following the screw mandrel. 44 rotate, force nut 45 to move along the axial direction of screw mandrel 44, because when those skilled in the mechanical field see screw mandrel 44 nuts 45 devices, just must know that when actually making this device, add screw mandrel 44 nuts 45 The guiding device of adding screw mandrel 44 and nut 45 can be realized without creative work of personnel in the mechanical field, and it is hereby explained.

The control mode of the utility model is automatically controlled by the controller, and the control circuit of the controller can be realized through simple programming by those skilled in the art, which belongs to the common knowledge in the field, and the utility model is mainly used to protect mechanical devices, so The utility model no longer explains the control mode and the circuit connection in detail.

The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the utility model. It should be pointed out that those skilled in the art can make several modifications, improvements and substitutions without departing from the concept of the present invention, all of which belong to the protection scope of the present utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (8)

1. a kind of English special blackboard device, it is characterised in that include bottom plate（1）, lowering or hoisting gear（2）, special blackboard（3）、 Mobile device（4）And blackboard eraser（5）, bottom plate（1）Lowering or hoisting gear is arranged with left and right sides of top（2）, the lifting of the side of left and right two Device（2）Between top be provided with special blackboard（3）, special blackboard（3）Front upper is provided with mobile device（4）, mobile device（4） Bottom is provided with blackboard eraser（5）.

A kind of 2. English special blackboard device according to claim 1, it is characterised in that lowering or hoisting gear（2）Include One support（20）, small pole（22）, electronic reel（23）, slide rail（24）, top shoe（25）, sliding block（26）And drawstring （27）, bottom plate（1）First support is arranged with left and right sides of top（20）, left first support（20）Right side and right first Frame（20）Left side is symmetrically provided with groove（21）, left groove（21）Both sides and right groove above and below inner left wall（21）Above and below inner right wall Both sides are arranged with small pole（22）, the small pole in left（22）The small pole of right-hand member and right（22）Left end be arranged with it is electronic around Line wheel（23）, left groove（21）Inner left wall and right groove（21）Inner right wall is arranged with slide rail（24）, slide rail（24）It is located at The small pole of both up and down（22）Between, slide rail（24）It is provided with top shoe（25）And sliding block（26）, electronic reel（23） On be wound with drawstring（27）, drawstring（27）With top shoe（25）And sliding block（26）Connection, left top shoe（25）And sliding block （26）Right side and special blackboard（3）Left side connects, right top shoe（25）And sliding block（26）Left side and special blackboard（3）Right side Connection.

A kind of 3. English special blackboard device according to claim 2, it is characterised in that mobile device（4）Include Two supports（40）, left shaft holder（41）, right axle bearing（42）, the first motor（43）, screw mandrel（44）And nut（45）, special blackboard （3）Front upper is provided with second support（40）, second support（40）Bottom is sequentially provided with left shaft holder from left to right（41）, right axle Bearing（42）With the first motor（43）, left shaft holder（41）With right axle bearing（42）On screw mandrel is installed（44）, screw mandrel（44）It is right End and the first motor（43）Left end connects, screw mandrel（44）It is provided with nut（45）, screw mandrel（44）With nut（45）Coordinate, nut （45）Bottom and blackboard eraser（5）Top connects.

4. a kind of English special blackboard device according to claim 3, it is characterised in that also include first bearing seat （6）, the second motor（7）, rotating shaft（8）, connecting plate（9）, dust collecting box（10）And swash plate（11）, special blackboard（3）Set among bottom There is first bearing seat（6）With the second motor（7）, first bearing seat（6）Positioned at the second motor（7）Left, first bearing seat（6）On Rotating shaft is installed（8）, rotating shaft（8）Right-hand member and the second motor（7）Left end connects, rotating shaft（8）Bottom is provided with connecting plate（9）, connection Plate（9）Bottom is provided with dust collecting box（10）, dust collecting box（10）Inner bottom part is provided with swash plate（11）.

5. a kind of English special blackboard device according to claim 4, it is characterised in that also include big pole（12）、 Upper cylinder（13）And lower cylinder（14）, nut（45）Bottom front is provided with big pole（12）, big pole（12）Rear portion is provided with upper gas Cylinder（13）And lower cylinder（14）, upper cylinder（13）Positioned at lower cylinder（14）Top, upper cylinder（13）And lower cylinder（14）Rear end with Blackboard eraser（5）Front portion connection.

A kind of 6. English special blackboard device according to claim 5, it is characterised in that special blackboard（3）Front portion is painted with Four line lattice of English.

A kind of 7. English special blackboard device according to claim 6, it is characterised in that big pole（12）Material for not Become rusty steel.

A kind of 8. English special blackboard device according to claim 7, it is characterised in that bottom plate（1）Material be Q235 Steel.