CN211892643U

CN211892643U - Blackboard is used in college high number teaching

Info

Publication number: CN211892643U
Application number: CN202020217816.0U
Authority: CN
Inventors: 曹向平; 陈燕
Original assignee: Hunan Technical College of Railway High Speed
Current assignee: Hunan Technical College of Railway High Speed
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-11-10
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a blackboard is used in university high-number teaching relates to classroom education apparatus field, and when teaching to current university high-number, the back row classmate can't see the blackboard clearly and frequently erase the teaching plan, leads to the problem of extravagant classroom time, now proposes following scheme, and it includes the blackboard, blackboard both sides middle-end rotates installs the axis of rotation, just the one end fixed mounting that the blackboard was kept away from to the axis of rotation has first support, one side that first support upper end is close to the blackboard has first telescopic link through U type hinge movable mounting, just the one end that first support was kept away from to first telescopic link has cup jointed the second telescopic link, the one end that first telescopic link was kept away from to the second telescopic link has the fixture block through U type hinge movable mounting, just the draw-in groove has been seted up to fixture block one side. The utility model discloses novel structure, and the device when having solved college high-count teaching, the back row classmate can't see clearly the blackboard and frequently erase the teaching plan, leads to the problem of extravagant classroom time, suitable popularization.

Description

Blackboard is used in college high number teaching

Technical Field

The utility model relates to a classroom education apparatus field especially relates to a blackboard is used in college high number teaching.

Background

Before the invention of the characters, people find that charcoal can be used for drawing pictures, ancient murals can be found in ancient rock caverns in Europe, the rock wall on which the murals are drawn can be called a blackboard in the traditional sense, the ancient teaching of China mostly uses an article called a sand table, hardwoods are used for repeatedly writing on sand, but the blackboard cannot be considered as a blackboard because the sand is soft, the blackboard is coated on the surface of a hard object such as a wood board, cement and the like by black paint at the earliest, until the nineties of the ancient times, water mill glass, color coated steel plates, composite plates and the like, the one-step development of the world education industry is proved, the blackboard is a flat plate, a cambered plate and a movable plate are divided from the surface shape to the structure composition for spreading knowledge and popularizing education and setting up the labor for sweating, the types of the existing blackboards are also complicated and diversified, the colors of the blackboards, green plates, white plates and the like are divided from the surface shape, the teaching blackboard comprises an electronic blackboard, a multifunctional combination board, a combined push-pull blackboard, an interactive electronic whiteboard, a projection board with a screen and the like.

The blackboard for college high-number is fixed on a wall at present, a college classroom is large, a student sitting at the rear cannot see the blackboard clearly, the learning efficiency of the college is seriously influenced, meanwhile, the blackboard fixed on the wall cannot be turned over, a teaching plan of the blackboard needs to be erased frequently in a class, and dust is scattered.

SUMMERY OF THE UTILITY MODEL

The utility model provides a blackboard is used in college high number teaching, when having solved college high number teaching, the back row classmate can't see the blackboard clearly and frequently erase the teaching notes, leads to the problem of extravagant classroom time.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a blackboard for college high-count teaching comprises a blackboard, wherein rotating shafts are rotatably mounted at the middle ends of two sides of the blackboard, a first support is fixedly mounted at one end of each rotating shaft, which is far away from the blackboard, a first telescopic rod is movably mounted at one side, which is close to the blackboard, of the upper end of the first support through a U-shaped hinge, a second telescopic rod is sleeved at one end, which is far away from the first support, of the first telescopic rod, a clamping block is movably mounted at one end, which is far away from the first telescopic rod, of the second telescopic rod through the U-shaped hinge, a clamping groove is formed in one side of the clamping block, the clamping groove is matched with the blackboard, a push-pull rod is fixedly mounted at one side, which is far away from the blackboard, of the clamping block, a reset spring is sleeved on the circumferential outer wall of the push-pull rod, the reset spring, the chalk box is characterized in that the movable groove and the push-pull rod are movably mounted, a placing frame is fixedly mounted on one side, close to the blackboard, of the lower end of the first support, a chalk storage groove is formed in one side, close to the top end of the first support, of the placing frame, the placing groove is formed in the top end, located right below the blackboard, of the placing groove, the dust box is placed inside the placing groove, a second support is fixedly mounted at the bottom end of the placing frame, and a pulley is movably mounted at the bottom end of the second support.

Preferably, a handle is fixedly installed at one end, far away from the clamping block, of the push-pull rod penetrating through the movable groove, and a plug pin groove is formed in one section, close to the handle, of the push-pull rod.

Preferably, one side of the pulley is provided with a brake sheet.

Preferably, one side of the lower end of the first support, which is close to the blackboard, is movably provided with a limiting rod through a U-shaped hinge.

Preferably, the fixture block is arranged on the blackboard in an oblique angle.

The utility model has the advantages that:

1. pass through rotation axis connection in first support through the blackboard, when college high number teaching, need not erase after the teaching plan is written full of the blackboard, can rotate the blackboard, use another side blackboard and continue to be on class, saved the time of erasing the blackboard, also prevented to go to class the time and erased the blackboard, the harm that the dust was absorbed by the student.

2. Through draw-in groove and blackboard matching, behind rotatory blackboard, fix the blackboard, make things convenient for the mr to write the teaching plan on the blackboard, when having avoided the mr to write the teaching plan, the blackboard rocks and leads to writing trouble, the condition of extravagant student study time.

3. Be provided with the dust box through the rack, in the dust box will be collected to the dust of erasing the teaching notes, conveniently carry out centralized processing to the dust after class, be provided with the pulley through second support bottom, be convenient for remove the blackboard, at high number teaching in-process, the teaching notes that the back row classmate of being convenient for can see the blackboard clearly improve learning efficiency.

In conclusion, the device has solved when college high-count teaching, and back row classmates can't see clearly the blackboard and frequently erase the teaching plan, leads to the problem of extravagant classroom time, suitable popularization.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic structural diagram of a position a of the present invention.

Fig. 3 is a schematic top view of the present invention.

Reference numbers in the figures: 1 blackboard, 2 axis of rotation, 3 first supports, 4 first telescopic links, 5 second telescopic links, 6 fixture blocks, 7 draw-in grooves, 8 push-and-pull rods, 9 reset spring, 10 activity grooves, 11 racks, 12 chalk hold up tanks, 13 standing grooves, 14 dust boxes, 15 second supports, 16 pulleys, 17 gag lever posts.

Detailed Description

The technical solution in the embodiments of the present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1-3, a blackboard for college height teaching comprises a blackboard 1, wherein rotating shafts 2 are rotatably mounted at the middle ends of two sides of the blackboard 1, a first support 3 is fixedly mounted at one end of each rotating shaft 2 far away from the blackboard 1, a first telescopic rod 4 is movably mounted at one side, close to the blackboard 1, of the upper end of the first support 3 through a U-shaped hinge, a second telescopic rod 5 is sleeved at one end of each first telescopic rod 4 far away from the first support 3, a clamping block 6 is movably mounted at one end, far away from the first telescopic rod 4, of the second telescopic rod 5 through the U-shaped hinge, a clamping groove 7 is formed in one side of the clamping block 6, the clamping groove 7 is matched with the blackboard 1, a push-pull rod 8 is fixedly mounted at one side, far away from the blackboard 1, a reset spring 9 is sleeved on the circumferential outer wall of the push-pull rod 8, the reset spring 9 is fixedly mounted with the clamping block 6, and one end, the blackboard eraser is characterized in that a movable groove 10 is formed in the upper end of the first support 3, the movable groove 10 and a push-pull rod 8 are movably installed, a placing frame 11 is fixedly installed on one side, close to the blackboard 1, of the lower end of the first support 3, a chalk storage groove 12 is formed in one side, close to the top end of the first support 3, of the placing frame 11, a placing groove 13 is formed in the top end, located right below the blackboard 1, of the placing frame 11, a dust box 14 is placed in the placing groove 13, a second support 15 is fixedly installed at the bottom end of the placing frame 11, a pulley 16 is movably installed at the bottom end of the second support 15, a handle is fixedly installed at one end, far away from the clamping block 6, of the push-pull rod 8 penetrating through the movable groove 10, a pin inserting groove is formed in one section, close to the handle, a brake sheet is arranged on one side of the pulley, the fixture block 6 is arranged on the blackboard 1 in an oblique angle.

The working principle is as follows: firstly, putting chalk into a chalk storage groove 12, loosening a brake sheet on one side of a pulley 16, moving a blackboard 1 to a position which can be seen by students through the pulley 16, clamping the brake sheet, fixing the pulley 16 to prevent the blackboard 1 from moving when writing a teaching plan, driving a push-pull rod 8 to move towards a first bracket 3 by pulling a handle after the blackboard 1 is fully written by the teaching plan in a classroom, driving a clamping block 6 to move by the push-pull rod 8, driving a resetting spring 9 by the clamping block 6 to move and extrude the resetting spring 9, driving a second telescopic rod 5 to retract into a first telescopic rod 4 when the clamping block 6 moves, making a bolt through the chalk, inserting the chalk into a bolt groove to rotate the blackboard 1, switching a new blackboard 1, lifting a limiting rod 17 to limit the blackboard 1 after rotation, pulling the push-pull rod 8 to take down the chalk in the bolt groove, the push-pull rod 8 is loosened, the reset spring 9 provides elasticity for the clamping block 6, the clamping block 6 is driven to move towards the blackboard 1, meanwhile, the clamping block 6 drives the second telescopic rod 5 to stretch out from the first telescopic rod 4, the blackboard 1 is fixed through the clamping groove 7, when the blackboard 1 is erased after a class, dust falls into the dust box 14 under the action of gravity, and the dust box 14 is taken down, so that the dust can be processed.

Claims

1. The utility model provides a blackboard for college high-number teaching, includes blackboard (1), its characterized in that, blackboard (1) both sides middle-end rotates installs axis of rotation (2), just the one end fixed mounting that blackboard (1) was kept away from to axis of rotation (2) has first support (3), there is first telescopic link (4) one side that first support (3) upper end is close to blackboard (1) through U type hinge movable mounting, just second telescopic link (5) have been cup jointed to the one end that first support (3) were kept away from in first telescopic link (4), there is fixture block (6) through U type hinge movable mounting to the one end that first telescopic link (4) were kept away from in second telescopic link (5), just draw-in groove (7) have been seted up to fixture block (6) one side, just draw-in groove (7) match with blackboard (1), one side fixed mounting that blackboard (1) was kept away from in fixture block (6) has push-and-, and the outer wall of the circumference of the push-pull rod (8) is sleeved with a reset spring (9), the reset spring (9) and the clamping block (6) are fixedly installed, one end, far away from the clamping block (6), of the reset spring (9) is fixedly installed on the side wall of the first support (3), a movable groove (10) is formed in the upper end of the first support (3), the movable groove (10) and the push-pull rod (8) are movably installed, a placing frame (11) is fixedly installed on one side, close to the blackboard (1), of the lower end of the first support (3), a chalk storage groove (12) is formed in one side, close to the top end of the first support (3), of the placing frame (11), a placing groove (13) is formed in the top end, located right below the blackboard (1), a dust box (14) is placed in the placing groove (13), and a second support (15) is fixedly installed at the bottom end of the, and a pulley (16) is movably arranged at the bottom end of the second bracket (15).

2. The blackboard for university height teaching according to claim 1, characterized in that the push-pull rod (8) is fixedly provided with a handle through the movable slot (10) at one end far away from the fixture block (6), and a plug pin slot is arranged at a section of the push-pull rod (8) near the handle.

3. The blackboard for teaching college height according to claim 1, characterized in that one side of the pulley (16) is provided with a braking piece.

4. The blackboard for college high-count teaching according to claim 1, wherein a limiting rod (17) is movably mounted at one side of the lower end of the first bracket (3) close to the blackboard (1) through a U-shaped hinge.

5. The blackboard for teaching college high counts according to claim 1, characterized in that the fixture block (6) is arranged on the blackboard (1) in an oblique angle.