CN212889608U

CN212889608U - Blackboard for teaching that possesses raising and lowering functions

Info

Publication number: CN212889608U
Application number: CN202021293590.9U
Authority: CN
Inventors: 王晓辉; 徐天伦
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-06
Anticipated expiration: 2030-07-06

Abstract

The utility model discloses a blackboard is used in teaching that possesses raising and lowering functions, the package rubbing board body, frame, lifter and connecting block, the both sides of plate body are provided with extending structure, the bottom fixedly connected with lifter of frame, and the bottom of lifter is provided with elevation structure, elevation structure's bottom fixedly connected with connecting block, the bottom fixedly connected with universal wheel of supporting seat, the inside of supporting seat is provided with location structure. The utility model discloses a be provided with the bracing piece, adjust the mouth, the claw pincers, nut and external screw thread, the bracing piece cover is established on the lateral wall of lifter, the lifter can upwards stretch or return the inside of contracting the bracing piece, and the claw pincers are the strip setting, receive external force and can gather together to inside, the nut is narrow wide form setting down simultaneously, when the nut moves down, the claw pincers can gather together to inside, and embrace the lifter, fix a position fixedly to the lifter, current altitude mixture control to the device, thereby make the device have raising and lowering functions.

Description

Blackboard for teaching that possesses raising and lowering functions

Technical Field

The utility model relates to a teaching equipment technical field specifically is a blackboard is used in teaching that possesses raising and lowering functions.

Background

Along with the high-speed development of society, economic level's constantly improves, and the country more and more attaches importance to cultural education, and in the teaching, essential teaching equipment during the blackboard, blackboard are the show panel that can write repeatedly with the chalk, but current blackboard for teaching has many problems or defects:

traditional blackboard for teaching is in-service use, and the blackboard is fixed on the wall body more, with fixed back of blackboard installation, highly difficult to change, and during the height-adjusting, need demolish the blackboard, make the altitude mixture control nature of device not good.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blackboard is used in teaching that possesses raising and lowering functions to the not good problem of altitude mixture control nature who proposes the device among the above-mentioned background is solved.

In order to achieve the above object, the utility model provides a following technical scheme: a blackboard with lifting function for teaching, which comprises a board body, a frame, a lifting rod and a connecting block, the edge of the plate body is fixedly connected with a frame, the two sides of the plate body are provided with expanding structures, the bottom end of the frame is fixedly connected with a lifting rod, and the bottom end of the lifting rod is provided with a lifting structure which comprises a supporting rod, an adjusting opening, a claw clamp, a screw cap and an external thread, the supporting rod is movably connected on the outer side wall of the lifting rod, the top end of the supporting rod is provided with an adjusting port, and the outer side wall of the adjusting port is provided with external threads, the top end of the adjusting port is fixedly connected with claw tongs, the outer side wall of the claw clamp is movably connected with a screw cap, the bottom end of the lifting structure is fixedly connected with a connecting block, and the bottom fixedly connected with supporting seat of connecting block, the bottom fixedly connected with universal wheel of supporting seat, the inside of supporting seat is provided with location structure.

Preferably, extend the structure including extending board, hinge, solid fixed ring, fixed pin and accomodate the groove, extend board swing joint in one side of plate body, the one end fixedly connected with hinge of extending board, the inside of extending board is provided with accomodates the groove, and accomodates the solid fixed ring of inside fixedly connected with in groove, gu fixed ring's inside swing joint has the fixed pin.

Preferably, the expansion plates are symmetrically arranged on two sides of the plate body, the hinges are fixedly connected between the plate body and the expansion plates and symmetrically arranged on the expansion plates, and the size of each expansion plate is equal to half of the size of the plate body.

Preferably, the support rod is sleeved on the outer side of the lifting rod, the adjusting opening is in threaded connection with the screw cap, the claw tongs are annularly distributed at the top end of the adjusting opening, the adjusting opening and the claw tongs are in an integrated structure, and the screw cap is arranged in a shape of being narrow at the top and wide at the bottom.

Preferably, location structure includes fixed block, thread groove, threaded rod, runner and block rubber, the bottom fixed connection of fixed block is in the top of supporting seat, the inside of fixed block is provided with the thread groove, and swing joint has the threaded rod on the inside wall of thread groove, the top fixed connection of threaded rod is in the runner, the bottom fixed connection of threaded rod is in the block rubber.

Preferably, the fixed block is the symmetry setting on the top of supporting seat, be threaded connection between fixed block and the threaded rod, the threaded rod runs through in the inside of supporting seat, be threaded connection between threaded rod and the runner.

Compared with the prior art, the beneficial effects of the utility model are that: the blackboard with the lifting function for teaching not only realizes the lifting function, but also realizes the expansion function and the positioning function;

(1) the lifting rod is sleeved on the outer side wall of the lifting rod through the supporting rod, the adjusting opening, the claw clamp, the screw cap and the external threads, the lifting rod can be upwards stretched or retracted into the supporting rod, the claw clamp is arranged in a strip shape and can be inwardly gathered under external force, meanwhile, the screw cap is arranged in a narrow-top and wide-bottom shape, when the screw cap moves downwards, the claw clamp can be inwardly gathered and can surround the lifting rod to position and fix the lifting rod, and the height of the device is adjusted at present, so that the device has a lifting function;

(2) the expansion plate is provided with the expansion plate, the hinge, the fixing ring, the fixing pin and the accommodating groove, the hinge is fixed between the expansion plate and the plate body, the expansion plate can be overturned by taking the hinge as an axis, the area of the plate body is expanded, the accommodating groove is formed in the expansion plate, the fixing pin is movably connected to the fixing ring, and when the fixing pin is inserted into one end of the plate body, the expansion plate can be fixed, the expansion plate is prevented from overturning, and therefore the device has an expansion function;

(3) through being provided with fixed block, thread groove, threaded rod, runner and block rubber, the inside of fixed block is provided with the thread groove, makes to constitute threaded connection between fixed block and the threaded rod, when the runner rotates, can drive the threaded rod and reciprocate in the inside of fixed block, and indirect drive block rubber withstands ground or keeps away from ground, has realized fixed with ground, the effectual skew of device of having prevented to make the device have locate function.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic rear view of the present invention;

fig. 3 is a schematic side view of a cross-sectional structure of the elevating structure of the present invention;

fig. 4 is a schematic view of the front cross-sectional structure of the positioning structure of the present invention.

In the figure: 1. a plate body; 2. a frame; 3. expanding the structure; 301. expanding the board; 302. a hinge; 303. a fixing ring; 304. a fixing pin; 305. a receiving groove; 4. a lifting rod; 5. a lifting structure; 501. a support bar; 502. an adjustment port; 503. claw tongs; 504. a nut; 505. an external thread; 6. connecting blocks; 7. a supporting seat; 8. a universal wheel; 9. a positioning structure; 901. a fixed block; 902. a thread groove; 903. a threaded rod; 904. a rotating wheel; 905. a rubber block.

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. 1-4, the present invention provides an embodiment: the utility model provides a blackboard for teaching that possesses raising and lowering functions, which comprises a plate body 1, frame 2, lifter 4 and connecting block 6, the edge fixedly connected with frame 2 of plate body 1, the both sides of plate body 1 are provided with extending structure 3, extending structure 3 includes extending board 301, hinge 302, solid fixed ring 303, fixed pin 304 and accomodate groove 305, extending board 301 swing joint is in one side of plate body 1, the one end fixedly connected with hinge 302 of extending board 301, the inside of extending board 301 is provided with accomodates groove 305, and the inside fixedly connected with solid fixed ring 303 of accomodating groove 305, the inside swing joint of solid fixed ring 303 has fixed pin 304, extending board 301 is the symmetry setting in the both sides of plate body 1, hinge 302 fixed connection is between plate body 1 and extending board 301, hinge 302 is the symmetry setting on extending board 301, the size of extending board 301 equals half the size of plate body 1;

when the expansion plate is used, the hinge 302 is fixed between the expansion plate 301 and the plate body 1 through the expansion plate 301, the hinge 302, the fixing ring 303, the fixing pin 304 and the accommodating groove 305, the expansion plate 301 can be turned over by taking the hinge 302 as an axis, the area of the plate body 1 is expanded, the accommodating groove 305 is formed in the expansion plate 301, the fixing pin 304 is movably connected to the inside of the fixing ring 303, when the fixing pin 304 is inserted into one end of the plate body 1, the expansion plate 301 can be fixed, the expansion plate 301 is prevented from turning over, and therefore the expansion plate has an expansion function;

the bottom end of the frame 2 is fixedly connected with a lifting rod 4, the bottom end of the lifting rod 4 is provided with a lifting structure 5, the lifting structure 5 comprises a support rod 501, an adjusting opening 502, a claw clamp 503, a nut 504 and an external thread 505, the support rod 501 is movably connected to the outer side wall of the lifting rod 4, the top end of the support rod 501 is provided with the adjusting opening 502, the external thread 505 is arranged on the outer side wall of the adjusting opening 502, the top end of the adjusting opening 502 is fixedly connected with the claw clamp 503, the outer side wall of the claw clamp 503 is movably connected with the nut 504, the support rod 501 is sleeved on the outer side of the lifting rod 4, the adjusting opening 502 is in threaded connection with the nut 504, the claw clamp 503 is annularly distributed at the top end of the adjusting opening 502, the adjusting opening 502 and the claw clamp 503 are;

when the lifting device is used, the supporting rod 501 is sleeved on the outer side wall of the lifting rod 4 through the arrangement of the supporting rod 501, the adjusting opening 502, the claws 503, the nut 504 and the external threads 505, the lifting rod 4 can be upwards stretched or retracted into the supporting rod 501, the claws 503 are arranged in a strip shape and can be inwardly gathered under external force, meanwhile, the nut 504 is arranged in a narrow-top and wide-bottom shape, when the nut 504 moves downwards, the claws 503 can be inwardly gathered and encircle the lifting rod 4 to position and fix the lifting rod 4, and the height of the lifting device is adjusted, so that the lifting device has a lifting function;

the bottom end of the lifting structure 5 is fixedly connected with a connecting block 6, the bottom end of the connecting block 6 is fixedly connected with a supporting seat 7, the bottom end of the supporting seat 7 is fixedly connected with a universal wheel 8, a positioning structure 9 is arranged inside the supporting seat 7, the positioning structure 9 comprises a fixing block 901, a threaded groove 902, a threaded rod 903, a rotating wheel 904 and a rubber block 905, the bottom end of the fixing block 901 is fixedly connected to the top end of the supporting seat 7, the threaded groove 902 is arranged inside the fixing block 901, the inner side wall of the threaded groove 902 is movably connected with the threaded rod 903, the top end of the threaded rod 903 is fixedly connected to the rotating wheel 904, the bottom end of the threaded rod 903 is fixedly connected to the rubber block 905, the fixing block 901 is symmetrically arranged at the top end of the supporting seat 7, the fixing;

during the use, through being provided with fixed block 901, thread groove 902, threaded rod 903, runner 904 and rubber block 905, the inside of fixed block 901 is provided with thread groove 902, make to constitute threaded connection between fixed block 901 and the threaded rod 903, when runner 904 rotated, can drive threaded rod 903 and reciprocate in the inside of fixed block 901, indirect drive rubber block 905 withstands ground or keeps away from ground, realized fixed with ground, the effectual skew of device of having prevented, thereby make the device have locate function.

The working principle is as follows: when the device is used, firstly, the device is taken out and transported to a target area, when the device has a sliding deviation phenomenon, the device can be fixed with the ground, the rotating wheel 904 is grabbed firstly and rotates downwards along the thread of the threaded rod 903, the threaded rod 903 can drive the rubber block 905 to abut against the ground, the friction force between the rubber block and the ground is increased, and the device is prevented from sliding and deviating;

secondly, when the device needs to be lifted, the nuts 504 are sequentially held at two sides and rotated, when the claw tongs 503 are rotated to be separated from the lifting rod 4, the lifting rod 4 is lifted upwards or downwards, when the proper height is adjusted, the nuts 504 are held to rotate downwards, the claw tongs 503 are gathered inwards to encircle the lifting rod 4, and the lifting rod 4 is fixed in position;

finally, when the area of the plate body 1 needs to be expanded, the expansion plate 301 is grabbed, the expansion plate 301 is turned over to be flush with the plate body 1, then the fixing pin 304 is pushed towards one side of the plate body 1, the fixing pin 304 is inserted into the plate body 1, the position of the expansion plate 301 is limited, and the device is finally used.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a blackboard is used in teaching that possesses raising and lowering functions, includes plate body (1), frame (2), lifter (4) and connecting block (6), its characterized in that: the edge of the plate body (1) is fixedly connected with a frame (2), two sides of the plate body (1) are provided with expansion structures (3), the bottom end of the frame (2) is fixedly connected with a lifting rod (4), the bottom end of the lifting rod (4) is provided with a lifting structure (5), the lifting structure (5) comprises a supporting rod (501), an adjusting opening (502), a claw clamp (503), a nut (504) and external threads (505), the supporting rod (501) is movably connected on the outer side wall of the lifting rod (4), the top end of the supporting rod (501) is provided with an adjusting opening (502), the outer side wall of the adjusting opening (502) is provided with external threads (505), the top end of the adjusting opening (502) is fixedly connected with the claw clamp (503), the outer side wall of the claw clamp (503) is movably connected with the nut (504), the bottom end of the lifting structure (5) is fixedly connected with, and the bottom fixedly connected with supporting seat (7) of connecting block (6), the bottom fixedly connected with universal wheel (8) of supporting seat (7), the inside of supporting seat (7) is provided with location structure (9).

2. The blackboard for teaching of claim 1, which has a lifting function, and is characterized in that: extend structure (3) including extending board (301), hinge (302), solid fixed ring (303), fixed pin (304) and accomodate groove (305), extending board (301) swing joint is in one side of plate body (1), the one end fixedly connected with hinge (302) of extending board (301), the inside of extending board (301) is provided with accomodates groove (305), and accomodates the solid fixed ring (303) of inside fixedly connected with of groove (305), the inside swing joint of solid fixed ring (303) has fixed pin (304).

3. The blackboard for teaching of claim 2, which has a lifting function, and is characterized in that: the expansion board (301) is symmetrically arranged on two sides of the board body (1), the hinge (302) is fixedly connected between the board body (1) and the expansion board (301), the hinge (302) is symmetrically arranged on the expansion board (301), and the size of the expansion board (301) is equal to the size of one half of the board body (1).

4. The blackboard for teaching of claim 1, which has a lifting function, and is characterized in that: the utility model discloses a lifting rod, including bracing piece (501), regulation mouth (502) and nut (504) are threaded connection, claw pincers (503) are cyclic annular distribution on the top of regulation mouth (502), be the integrated structure between regulation mouth (502) and claw pincers (503), nut (504) are under the narrow wide setting.

5. The blackboard for teaching of claim 1, which has a lifting function, and is characterized in that: location structure (9) include fixed block (901), thread groove (902), threaded rod (903), runner (904) and rubber block (905), the bottom fixed connection of fixed block (901) is on the top of supporting seat (7), the inside of fixed block (901) is provided with thread groove (902), and swing joint has threaded rod (903) on the inside wall of thread groove (902), the top fixed connection of threaded rod (903) is in runner (904), the bottom fixed connection of threaded rod (903) is in rubber block (905).

6. The blackboard for teaching of claim 5, which has a lifting function, and is characterized in that: the fixed block (901) is symmetrically arranged on the top end of the supporting seat (7), the fixed block (901) is in threaded connection with the threaded rod (903), the threaded rod (903) penetrates through the inside of the supporting seat (7), and the threaded rod (903) is in threaded connection with the rotating wheel (904).