CN111301034B

CN111301034B - Show shelf that business administration specialty teaching was used

Info

Publication number: CN111301034B
Application number: CN201911209042.5A
Authority: CN
Inventors: 王毅
Original assignee: 王毅
Current assignee: SHIJIAZHUANG POST & TELECOMMUNICATION TECHNICAL College
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2021-06-18
Anticipated expiration: 2039-11-30
Also published as: CN111301034A

Abstract

The invention discloses a display stand for industrial and commercial management major teaching, which comprises a base, a white board and a switch arranged on the base, wherein universal casters are arranged around the lower end of the base, a pillar is arranged at the upper end of the base, a stepping motor electrically connected with the switch is arranged in the pillar, an incomplete gear is connected to an output shaft of the stepping motor in a key mode, a second driven gear matched with the incomplete gear is arranged at the front end of the incomplete gear, a long shaft penetrating through the pillar is connected to the center of the second driven gear in a key mode, a bearing, a second disc and a first disc are sequentially connected to the long shaft in a key mode from top to bottom, and support bars are symmetrically fixed at the front end and the. The invention has the advantages that: the white board brush can automatically rotate 180 degrees to replace a new white board in front by stepping on the switch, and then brush the old white board behind, and the white board brush can be prevented from moving by rotating the white board and the brush bar, so that time and labor are saved.

Description

Show shelf that business administration specialty teaching was used

Technical Field

The invention relates to a display stand, in particular to a display stand for industrial and commercial management professional teaching.

Background

The industrial and commercial management major needs to display a large number of charts in the teaching process, teachers can make some charts in advance in the actual teaching process, the charts are adhered to the upper row of the white board of the display rack, notes and the like are written below the charts, and students can participate in learning and understanding of the charts, so that the learning interest of the students is greatly improved, the teaching effect is improved, however, the charts in class are too many or the students are remembered, the notes on the white board are frequently erased after the charts are changed, characters on the white board can be erased only through repeated erasing, the time in class is very long, the time in class is very time-wasting, the characters in class are erased to be used by teachers in next class after class, and manpower and time are wasted.

Therefore, the display rack for the teaching of the industrial and commercial management major is needed, the display rack can be automatically rotated by 180 degrees to replace a new white board in front by stepping on the switch, and then the old white board in the back is cleaned, the white board can be prevented from being rotated and the brush bar can be prevented from moving, and time and labor are saved.

Disclosure of Invention

The invention mainly aims to provide a show shelf for the teaching of the industrial and commercial management major, which can automatically rotate 180 degrees to replace a new white board in front and then brush the old white board behind, and can prevent the white board from rotating and the brush strip from moving, thereby saving time and labor.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides a show shelf that industrial and commercial management specialty teaching was used, includes base, blank and establishes switch on the base, be equipped with universal caster around the base lower extreme, the upper end of base is equipped with the pillar, be equipped with in the pillar with the step motor that the switch electricity is connected, the key joint has incomplete gear on step motor's the output shaft, the front end of incomplete gear be equipped with incomplete gear matched with second driven gear, the central key joint of second driven gear has the major axis of passing the pillar, from last to having keyed joint bearing, second disc, first disc in proper order down on the major axis, the support bar is fixed with symmetrically around both ends around the first disc, be fixed with the firm piece symmetrically around both ends around the second disc, the upper end of support bar transversely is equipped with first clamp groove, the lower extreme of firm piece transversely is equipped with second clamp groove, the whiteboard is arranged on the first clamping groove and the second clamping groove, and the rear end of the strut is provided with a brushing mechanism matched with the incomplete gear, the bearing and the whiteboard.

Further, the plate brushing mechanism comprises a lower guide plate fixed at the rear end of the support column and an upper guide plate fixed at the rear end of the bearing outer ring, the lower guide plate and the upper guide plate are respectively provided with a lower guide groove and an upper guide groove, a worm is rotationally arranged in the lower guide groove, reciprocating threads are symmetrically arranged at the left end and the right end of the worm, brush strips in sliding fit in the lower guide groove are screwed on the reciprocating threads at the left end and the right end of the worm, the upper end of the brush strips is in sliding fit in the upper guide groove, a first driven gear matched with the incomplete gear is arranged at the rear end of the incomplete gear, and a worm wheel coaxially connected with the first driven gear and meshed with the middle of the worm is arranged below the first driven gear.

Furthermore, the brush strip comprises a scrubbing brush, sliding blocks are symmetrically arranged at the upper end and the lower end of the scrubbing brush, the sliding blocks on the upper side are arranged in the upper guide groove in a sliding mode, internal threads in threaded connection with the reciprocating threads of the worm are arranged on the sliding blocks on the lower side, the sliding blocks on the lower side are arranged in the lower guide groove in a sliding mode, and pulleys in contact with the upper end face of the upper guide plate are symmetrically arranged at the front end and the rear end of the sliding blocks on the upper side.

Furthermore, scraping strips which are contacted with the front end face of the scrubbing brush are symmetrically arranged between the upper guide plate and the lower guide plate.

Furthermore, the first driven gear is the same as the second driven gear in structure, the left end and the right end of the first driven gear and the right end of the second driven gear are symmetrically provided with limit blocks, and the limit blocks, which face one side of the incomplete gear, of the first driven gear and the second driven gear are attached to the toothless outer ring of the incomplete gear.

Furthermore, the upper end of the stabilizing block is provided with a locking screw for fixing the white board.

The invention has the advantages that: the white board brush can automatically rotate 180 degrees to replace a new white board in front by stepping on the switch, and then brush the old white board behind, and the white board brush can be prevented from moving by rotating the white board and the brush bar, so that time and labor are saved.

Drawings

FIG. 1 is a perspective view according to the present invention;

FIG. 2 is a front view in accordance with the present invention;

FIG. 3 is a right side view according to the present invention;

fig. 4 is a perspective view of the whiteboard removed according to the present invention;

FIG. 5 is a right side view of the whiteboard removed, in accordance with the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

fig. 7 is a cross-sectional view of a partial gear rotated 180 degrees and a whiteboard shifted according to the present invention;

FIG. 8 is a cross-sectional view of a partial gear rotation of 270 degrees with the brush bar near the middle according to the present invention;

FIG. 9 is an enlarged view of portion B of FIG. 6;

FIG. 10 is an enlarged view of section C of FIG. 6;

figure 11 is a perspective view of a brush bar according to the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1 to 11, a display stand for industrial and commercial management major teaching comprises a base 1, a white board and a switch arranged on the base 1, universal casters 19 are arranged around the lower end of the base 1, a pillar 2 is arranged at the upper end of the base 1, a stepping motor 18 electrically connected with the switch is arranged in the pillar 2, an incomplete gear 16 is keyed on an output shaft of the stepping motor 18, a second driven gear 17 matched with the incomplete gear 16 is arranged at the front end of the incomplete gear 16, a long shaft 3 penetrating through the pillar 2 is keyed at the center of the second driven gear 17, a bearing 8, a second disc 5 and a first disc 4 are sequentially keyed on the long shaft 3 from top to bottom, support bars 6 are symmetrically fixed at the front end and the back end of the first disc 4, stabilizing blocks 7 are symmetrically fixed at the front end and the back end of the second disc 5, a first clamping groove is transversely arranged at the upper end of the support bars 6, a second clamping groove is transversely arranged at the, the white board is arranged on the first clamping groove and the second clamping groove, and the rear end of the strut 2 is provided with a brushing mechanism matched with the incomplete gear 16, the bearing 8 and the white board.

The brush plate mechanism comprises a lower guide plate 10 fixed at the rear end of the pillar 2 and an upper guide plate 9 fixed at the rear end of the outer ring of the bearing 8, a lower guide groove and an upper guide groove are respectively formed in the lower guide plate 10 and the upper guide plate 9, a worm 13 is rotatably arranged in the lower guide groove, reciprocating threads are symmetrically arranged at the left end and the right end of the worm 13, brush strips 11 which are slidably matched in the lower guide groove are respectively screwed on the reciprocating threads at the left end and the right end of the worm 13, the upper end of each brush strip 11 is slidably matched in the upper guide groove, a first driven gear 15 matched with an incomplete gear 16 is arranged at the rear end of the incomplete gear 16, and a worm wheel 14 which is coaxially connected with the first driven gear 15 and is meshed with the middle of the worm 13 is arranged below the first driven gear 15. This arrangement allows the brush bar 11 to brush the whiteboard clean on the rear side after whiteboard changing.

The brush bar 11 comprises a scrubbing brush 112, sliding blocks 111 are symmetrically arranged at the upper end and the lower end of the scrubbing brush 112, the upper sliding block 111 is arranged in an upper guide groove in a sliding mode, internal threads in threaded connection with reciprocating threads of the worm 13 are arranged on the lower sliding block 111, the lower sliding block 111 is arranged in a lower guide groove in a sliding mode, and pulleys 113 in contact with the upper end face of the upper guide plate 9 are symmetrically arranged at the front end and the rear end of the upper sliding block 111.

The wiper strips 12 contacting the front end surface of the scrubber 112 are symmetrically provided between the upper guide plate 9 and the lower guide plate 10. This arrangement allows the wiper strip 12 to wipe dirt from the scrubber 112 clean during the return and return movement of the scrubber 112.

The first driven gear 15 is identical to the second driven gear 17 in structure, the left end and the right end of the first driven gear 15 and the second driven gear 17 are symmetrically provided with limit blocks, and the limit blocks of the first driven gear 15 and the second driven gear 17 facing one side of the incomplete gear 16 are attached to a toothless outer ring of the incomplete gear 16.

The upper end of the stabilizing block 7 is provided with a locking screw for fixing the white board.

The bearing 8, the second disc 5 and the first disc 4 are all positioned above the support 2.

The side of the slide block 111 and the wiper 112 facing the column 2 is closer to the column 2 than the side of the wiper 112 facing the column 2. The middle of the worm is provided with worm threads, and when the sliding block 111 reaches the top end of the reciprocating threads close to the worm wheel, the scrubbing brushes 112 on the left side and the right side can just contact.

The working principle is as follows: in the industrial and commercial management teaching, when the annotation displayed on the front white board does not need and needs a new white board, the chart is taken down and a foot is used to step on a switch, the stepping motor is started, the stepping motor drives the incomplete gear to overlook anticlockwise rotation, the outer ring teeth of the incomplete gear are meshed with the teeth of the second driven gear so as to drive the second driven gear to rotate 180 degrees, the second driven gear drives the long shaft to rotate 180 degrees, the long shaft drives the second disc and the first disc to rotate 180 degrees, the supporting bar and the stabilizing block rotate 180 degrees along with the rotation, so that the front white board and the rear white board are driven to rotate 180 degrees around the long shaft, the two white boards are switched, the front white board is blank, the chart can be pasted and the annotation is written, the rear white board does not need to be wiped, the outer ring teeth of the incomplete gear are separated from the teeth of the second driven gear at the moment, the limiting block is pasted on the toothless, so that the white board is not movable, as shown in fig. 7, the incomplete gear continues to rotate, the outer ring teeth of the incomplete gear are meshed with the teeth of the first driven gear to drive the first driven gear to rotate, the first driven gear drives the worm gear to rotate, the worm gear drives the worm to rotate, the reciprocating threads at the left end and the right end of the worm are the threads of the reciprocating screw, the reciprocating screws at the left end and the right end of the worm drive the sliding blocks at the lower side to move left and right along the lower guide groove to drive the board brush to be contacted with the white board at the rear side, the board brush wipes the white board at the rear side, as shown in fig. 8, the board brush is contacted with the scraping bar when returning to the original position, the scraping bar scrapes off dirt on the board brush to avoid influencing the board brush, the stepping motor stops after the incomplete gear rotates for one circle, the outer ring teeth of the incomplete gear are separated from the teeth of the first driven gear, the first driven gear is limited to rotate, so that the brush bar is not movable, the brush bar returns to the original position, the white board on the rear side is brushed clean, after class, the switch is only needed to be stepped, a new white board can be replaced, and then the old white board is automatically brushed clean, and time and labor are saved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a show shelf that industrial and commercial administration specialty teaching was used which characterized in that: including base (1), blank and establishing switch on base (1), be equipped with universal caster (19) around base (1) lower extreme, the upper end of base (1) is equipped with pillar (2), be equipped with in pillar (2) with step motor (18) that the switch electricity is connected, the key joint has incomplete gear (16) on the output shaft of step motor (18), the front end of incomplete gear (16) be equipped with incomplete gear (16) matched with second driven gear (17), the central key joint of second driven gear (17) has the major axis (3) of passing pillar (2), from last to having keyed joint in proper order down bearing (8), second disc (5), first disc (4) on major axis (3), be fixed with support bar (6) around the front and back both ends of first disc (4) symmetrically, stabilizing blocks (7) are symmetrically fixed at the front and rear ends of the second disc (5) in a front-back manner, a first clamping groove is transversely formed in the upper end of the supporting bar (6), a second clamping groove is transversely formed in the lower end of the stabilizing blocks (7), the white board is arranged on the first clamping groove and the second clamping groove, a board brushing mechanism matched with the incomplete gear (16), the bearing (8) and the white board is arranged at the rear end of the pillar (2), the board brushing mechanism comprises a lower guide plate (10) fixed at the rear end of the pillar (2) and an upper guide plate (9) fixed at the rear end of the outer ring of the bearing (8), a lower guide groove and an upper guide groove are respectively formed in the lower guide plate (10) and the upper guide plate (9), a worm (13) is rotationally arranged in the lower guide groove, and reciprocating threads are symmetrically arranged at the left end and the right end of the worm (13), the reciprocating screw thread of both ends all has the spiro union to be in about worm (13) brush strip (11) in the guide way down, the upper end of brush strip (11) the sliding fit is in go up in the guide way, the rear end of incomplete gear (16) be equipped with incomplete gear (16) matched with first driven gear (15), the below of first driven gear (15) be equipped with first driven gear (15) coaxial coupling and with worm (13) the middle engaged worm wheel (14).

2. The display rack for the teaching of the industrial and commercial management major as claimed in claim 1, wherein: the brush strip (11) comprises a scrubbing brush (112), sliding blocks (111) are symmetrically arranged at the upper end and the lower end of the scrubbing brush (112), the sliding blocks (111) are arranged on the upper side in a sliding mode in the upper guide groove, the sliding blocks (111) are arranged on the lower side and are provided with internal threads in threaded connection with the reciprocating threads of the worm (13), the sliding blocks (111) are arranged on the lower side in a sliding mode in the lower guide groove, and the sliding blocks (111) are symmetrically arranged on the upper side and the lower end of the sliding blocks (111) and are symmetrically provided with pulleys (113) in contact with the upper end face of the upper guide plate (9).

3. The display rack for the teaching of the industrial and commercial management major as claimed in claim 2, wherein: and scraping strips (12) which are contacted with the front end surface of the scrubbing brush (112) are arranged between the upper guide plate (9) and the lower guide plate (10) in a bilateral symmetry manner.

4. The display rack for the teaching of the industrial and commercial management major as claimed in claim 1, wherein: first driven gear (15) with second driven gear (17) structure is the same, first driven gear (15) the stopper that both ends all are equipped with symmetrically about second driven gear (17), first driven gear (15) second driven gear (17) face incomplete gear (16) one side the stopper all with the no tooth outer lane laminating of incomplete gear (16).

5. The display rack for the teaching of the industrial and commercial management major as claimed in claim 1, wherein: and the upper end of the stabilizing block (7) is provided with a locking screw for fixing the white board.