CN209851949U

CN209851949U - Combined lifting drawing board for teaching

Info

Publication number: CN209851949U
Application number: CN201920130444.5U
Authority: CN
Inventors: 徐春英
Original assignee: Yantai Engineering and Technology College
Current assignee: Yantai Engineering and Technology College
Priority date: 2019-01-25
Filing date: 2019-01-25
Publication date: 2019-12-27
Anticipated expiration: 2029-01-25

Abstract

The utility model discloses a combination formula lift drawing board is used in teaching, it belongs to political education apparatus technical field. Including bottom plate and drawing board, the top fixedly connected with lift section of thick bamboo of bottom plate, the inner wall sliding connection of lift section of thick bamboo has the lifter, the screw has been seted up to the inside of lifter, the bottom in the lift section of thick bamboo intracavity is rotated and is installed the screw rod, the outer wall of screw rod and the inner wall threaded connection of screw, be close to the first bevel gear of the outer wall fixedly connected with of its bottom on the screw rod, the last one side of being close to its bottom of lift section of thick bamboo is rotated and is installed the pivot, the first runner of one end fixedly connected with of pivot, the other end fixedly connected with second bevel gear of pivot, the surface of second bevel gear is connected with the surface engagement of first bevel gear, the top fixedly connected with mounting box of lifter, the middle part fixedly. The utility model discloses, possess simple structure, convenient to use's advantage, solved the relatively poor problem of traditional drawing board support stability.

Description

Combined lifting drawing board for teaching

Technical Field

The utility model relates to a political education apparatus technical field specifically is combination formula lift drawing board for teaching.

Background

Drawing board is when using among the prior art, installs on the support usually, and the support has the function of adjusting, can adjust height, angle etc. of drawing board, and then uses when making things convenient for political education teaching. However, the adjusting mechanism of the traditional drawing board support is limited after being adjusted through the matching of the limiting bolt and the limiting nut when being adjusted, the stability of the limiting structure is poor, the drawing board support is prone to shaking and swinging when being used, and the using effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combination formula lift drawing board is used in teaching possesses simple structure, convenient to use's advantage, has solved the relatively poor problem of traditional drawing board support stability.

In order to achieve the above object, the utility model provides a following technical scheme: a combined lifting drawing board for teaching comprises a base plate and a drawing board, wherein a lifting cylinder is fixedly connected to the top of the base plate, a lifting rod is slidably connected to the inner wall of the lifting cylinder, a screw hole is formed in the lifting rod, a screw rod is rotatably installed at the inner bottom of the lifting cylinder, the outer wall of the screw rod is in threaded connection with the inner wall of the screw hole, a first bevel gear is fixedly connected to the outer wall of the screw rod, which is close to the bottom of the screw rod, a rotating shaft is rotatably installed on one side of the lifting cylinder, which is close to the bottom of the lifting cylinder, one end of the rotating shaft is fixedly connected with a first rotating wheel, the other end of the rotating shaft is fixedly connected with a second bevel gear, the surface of the second bevel gear is meshed with the surface of the first bevel gear, a mounting box is fixedly connected to the, the inboard rotation installation that is close to its side on the tip of dead axle and the mounting box, the intracavity that is close to the worm wheel side on the mounting box rotates and installs the worm, the surface of worm is connected with the surface meshing of worm wheel, the top of worm is worn out behind the mounting box and fixedly connected with second runner.

Preferably, the other side of the lifting cylinder close to the top of the lifting cylinder is provided with a guide groove, the outer wall of the lifting rod close to the bottom of the lifting rod is fixedly connected with a guide block, and the outer wall of the guide block is connected with the inner wall of the guide groove in a sliding mode.

Preferably, a first bearing is embedded into the bottom of the lifting cylinder cavity, and the axis of the inner ring of the first bearing is fixedly mounted on the outer wall of the screw rod close to the bottom end of the screw rod.

Preferably, a second bearing is embedded into one side of the lifting cylinder close to the bottom of the lifting cylinder, and the axis of the inner ring of the second bearing is fixedly mounted with the outer wall of the rotating shaft.

Preferably, the top and the bottom in the installation box cavity are both embedded with third bearings, and the axes of the inner rings on the opposite surfaces of the two third bearings are respectively fixedly installed with the top end and the bottom end of the worm.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses, have the advantage that the regulation is convenient and stability is high, through the cooperation of a lift section of thick bamboo, lifter and first runner isotructure, the first runner of manual rotation can realize the regulation on the whole height of drawing board, and the student watches during convenient teaching, through the cooperation of worm, worm wheel and second runner, the second runner of manual rotation can realize the regulation on the drawing board inclination, makes things convenient for the teacher to paint the operation.

Drawings

Fig. 1 is a schematic structural view of an axonometric view of a bottom plate of the present invention;

fig. 2 is a schematic structural diagram of a top view of the bottom plate of the present invention;

fig. 3 is a schematic structural view of the elevating cylinder of the present invention along the sectional view of a-a in fig. 2;

fig. 4 is a schematic structural view of an axonometric view of the guide groove of the present invention;

fig. 5 is a schematic structural view of a worm-wheel shaft mapping of the present invention.

In the figure: the automatic drawing board comprises a base plate 1, a drawing board 2, a drawing board 3, a lifting cylinder 3, a lifting rod 4, a screw hole 5, a screw rod 6, a first bevel gear 7, a rotating shaft 8, a first rotating wheel 9, a second bevel gear 10, a mounting box 11, a worm wheel 12, a fixed shaft 13, a worm 14, a second rotating wheel 15, a guide groove 16, a guide block 17, a first bearing 18, a second bearing 19 and a third bearing 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a combined lifting drawing board for teaching comprises a bottom board 1 and a drawing board 2, wherein the top of the bottom board 1 is fixedly connected with a lifting cylinder 3, the inner wall of the lifting cylinder 3 is slidably connected with a lifting rod 4, a screw hole 5 is formed in the lifting rod 4, a screw rod 6 is rotatably arranged at the bottom in a cavity of the lifting cylinder 3, the outer wall of the screw rod 6 is in threaded connection with the inner wall of the screw hole 5, a first bevel gear 7 is fixedly connected to the outer wall of the screw rod 6 close to the bottom end of the screw rod, a rotating shaft 8 is rotatably arranged at one side of the lifting cylinder 3 close to the bottom of the lifting cylinder, one end of the rotating shaft 8 is fixedly connected with a first rotating wheel 9, the other end of the rotating shaft 8 is fixedly connected with a second bevel gear 10, the surface of the second bevel gear 10 is meshed with the surface of the first bevel gear 7, when the first rotating wheel 9 rotates clockwise, the screw, can adjust drawing board 2's height, the student watches during convenient teaching, the top fixedly connected with mounting box 11 of lifter 4, the middle part fixedly connected with worm wheel 12 of drawing board 2 side, the axle center fixedly connected with dead axle 13 of worm wheel 12, the inboard rotation installation that is close to its side on the tip of dead axle 13 and the mounting box 11, intracavity that is close to worm wheel 12 side on the mounting box 11 rotates and installs worm 14, worm 14's surface is connected with worm wheel 12's meshing, behind mounting box 11 and fixedly connected with second runner 15 are worn out on worm 14's top, when second runner 15 is in the same direction as changeing, meshing effect through worm wheel 12 and worm 14 drives drawing board 2 and in the same direction as changeing, adjust drawing board 2's inclination, make things convenient for the teacher to carry out relevant operations such as drawing.

In this embodiment, preferably, the other side of the lifting cylinder 3 near the top thereof is provided with a guide groove 16, the outer wall of the lifting rod 4 near the bottom thereof is fixedly connected with a guide block 17, the outer wall of the guide block 17 is slidably connected with the inner wall of the guide groove 16, and the lifting rod 4 is more stably moved through the cooperation of the guide groove 16 and the guide block 17.

In this embodiment, preferably, the first bearing 18 is embedded in the bottom of the cavity of the lifting cylinder 3, and the axis of the inner ring of the first bearing 18 is fixedly mounted on the outer wall of the screw rod 6 near the bottom end thereof.

In this embodiment, a second bearing 19 is preferably embedded in one side of the lifting cylinder 3 near the bottom thereof, and the axis of the inner ring of the second bearing 19 is fixedly mounted on the outer wall of the rotating shaft 8.

In this embodiment, preferably, the third bearings 20 are embedded in the top and the bottom of the cavity of the mounting box 11, and the axes of the inner rings of the opposite surfaces of the two third bearings 20 are respectively fixed to the top end and the bottom end of the worm 14.

The working principle is as follows: when the combined lifting drawing board for teaching is used, when the first rotating wheel 9 rotates clockwise, the screw 6 is driven to rotate by the reversing action of the first bevel gear 7 and the second bevel gear 10, the lifting rod 4 gradually extends out of the lifting cylinder 3, and in the process that the lifting rod 4 moves upwards, the lifting rod 4 moves more stably by the matching of the guide groove 16 and the guide block 17, so that the height of the drawing board 2 can be adjusted, and students can conveniently watch the drawing board during teaching; when the second rotating wheel 15 rotates clockwise, the drawing board 2 is driven to rotate clockwise through the meshing action of the worm wheel 12 and the worm 14, the inclination angle of the drawing board 2 is adjusted, and a teacher can conveniently conduct relevant operations such as drawing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Combined lifting drawing board for teaching, its characterized in that: comprises a bottom plate (1) and a drawing board (2), the top of the bottom plate (1) is fixedly connected with a lifting cylinder (3), the inner wall sliding connection of the lifting cylinder (3) is provided with a lifting rod (4), the inside of the lifting rod (4) is provided with a screw hole (5), the bottom of the cavity of the lifting cylinder (3) is rotatably provided with a screw rod (6), the outer wall of the screw rod (6) is in threaded connection with the inner wall of the screw hole (5), the outer wall of the screw rod (6) close to the bottom end of the screw rod is fixedly connected with a first bevel gear (7), one side of the lifting cylinder (3) close to the bottom of the lifting cylinder is rotatably provided with a rotating shaft (8), one end of the rotating shaft (8) is fixedly connected with a first rotating wheel (9), the other end of the rotating shaft (8) is fixedly connected with a second bevel gear (10), the surface of the second bevel, the top fixedly connected with mounting box (11) of lifter (4), middle part fixedly connected with worm wheel (12) of drawing board (2) side, axle center fixedly connected with dead axle (13) of worm wheel (12), the inboard rotation installation that is close to its side on tip and mounting box (11) of dead axle (13), intracavity rotation that is close to worm wheel (12) side on mounting box (11) installs worm (14), the surface of worm (14) is connected with the surface engagement of worm wheel (12), behind mounting box (11) and fixedly connected with second runner (15) are worn out on the top of worm (14).

2. The teaching combination formula lift drawing board of claim 1, characterized in that: a guide groove (16) is formed in the other side, close to the top, of the lifting cylinder (3), a guide block (17) is fixedly connected to the outer wall, close to the bottom, of the lifting rod (4), and the outer wall of the guide block (17) is connected with the inner wall of the guide groove (16) in a sliding mode.

3. The teaching combination formula lift drawing board of claim 1, characterized in that: a first bearing (18) is embedded into the bottom in the cavity of the lifting cylinder (3), and the axis of the inner ring of the first bearing (18) is fixedly mounted on the outer wall of the screw rod (6) close to the bottom end of the screw rod.

4. The teaching combination formula lift drawing board of claim 1, characterized in that: a second bearing (19) is embedded into one side, close to the bottom, of the lifting cylinder (3), and the axis of the inner ring of the second bearing (19) is fixedly installed on the outer wall of the rotating shaft (8).

5. The teaching combination formula lift drawing board of claim 1, characterized in that: third bearings (20) are embedded into the top and the bottom in the cavity of the mounting box (11), and the axes of inner rings on opposite surfaces of the two third bearings (20) are fixedly mounted with the top end and the bottom end of the worm (14) respectively.