CN113520043B - A teaching shift table for propaganda explanation - Google Patents
A teaching shift table for propaganda explanation Download PDFInfo
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- CN113520043B CN113520043B CN202110806940.XA CN202110806940A CN113520043B CN 113520043 B CN113520043 B CN 113520043B CN 202110806940 A CN202110806940 A CN 202110806940A CN 113520043 B CN113520043 B CN 113520043B
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- 239000011521 glass Substances 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 122
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000005096 rolling process Methods 0.000 claims description 28
- 230000002457 bidirectional effect Effects 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 16
- 230000002146 bilateral effect Effects 0.000 claims description 5
- 238000010422 painting Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
- A47B19/06—Reading-desks; Lecterns; Pulpits, i.e. free-standing with adjustable top leaf
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B19/00—Reading-desks; Lecterns; Pulpits, i.e. free-standing
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
- A47B97/02—Devices for holding or supporting maps, drawings, or the like, including means for preventing rolling-up
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/10—Adjustable or foldable or dismountable display stands
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F7/00—Show stands, hangers, or shelves, adapted for particular articles or materials
- A47F7/14—Show stands, hangers, or shelves, adapted for particular articles or materials for pictures, e.g. in combination with books or seed-bags ; for cards, magazines, newspapers, books or booklike articles, e.g. audio/video cassettes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
Abstract
The invention relates to the technical field of propaganda equipment, in particular to a teaching moving workbench for propaganda and explanation, which comprises a moving table, a jacking device, a picture display device and a glass cover, wherein the lower end of the moving table is rotatably connected with moving wheels through a moving frame, the upper end of the moving table is provided with a rectangular groove, and the jacking device is arranged on the lower end wall in the rectangular groove. The invention can solve the problems that the existing workbench can not be correspondingly adjusted according to the width of the picture scroll, the use flexibility of the workbench is reduced, and the like. The picture unfolding device adopted by the teaching mobile workbench for propaganda and explanation provided by the invention can be correspondingly adjusted according to the different widths of the picture rolls, and the functions of limiting and unfolding the picture rolls with different widths are realized, so that the use flexibility of the workbench is improved, the surface of the picture roll can be smoothed while the picture roll is unfolded, and the unfolding smoothness of the picture roll is improved.
Description
Technical Field
The invention relates to the technical field of propaganda equipment, in particular to a teaching mobile workbench for propaganda and explanation.
Background
Teaching mobile workbench indicates to be used for propaganda explanation teaching and can carry out the work platform who removes, and teaching mobile workbench has and uses conveniently, removes advantages such as nimble to by occasions such as extensively used for school, square, when art teaching activities such as fine arts are carried out to school, often need with the help of the flat picture scroll of workstation exhibition, so that the staff of religion explains the picture scroll.
At present, when the existing workbench is used for propaganda and explanation of picture scroll, the following defects generally exist: 1. the existing workbench can only unfold the picture scroll with the same width, and cannot correspondingly adjust the width of the picture scroll according to the width of the picture scroll, so that the using flexibility of the workbench is reduced, the surface of the picture scroll cannot be flattened when the picture scroll is unfolded, the unfolded picture scroll is easy to bulge, and the flatness of the unfolded picture scroll is reduced; 2. the scroll can not be dragged intermittently during rolling of the existing workbench, so that the phenomenon that the rolled scroll is loose easily occurs is caused, and the effect of scrolling the scroll is reduced.
Disclosure of Invention
The teaching mobile workbench for propaganda and explanation provided by the invention can solve the problems existing in propaganda and explanation of the picture scroll.
Technical scheme in order to achieve the purpose, the teaching moving workbench for propaganda and explanation comprises a moving table, a jacking device, a picture display device and a glass cover, wherein the lower end of the moving table is rotatably connected with a moving wheel through a moving frame, the upper end of the moving table is provided with a rectangular groove, the upper end of the moving table is provided with a slope surface close to the front side, the lower end wall in the rectangular groove is provided with the jacking device, the upper end of the jacking device is rotatably connected with the picture display device through a pin shaft, and the glass cover is inserted into the upper end of the picture display device.
The exhibition drawing device comprises a placing plate, two-way screws, a driving motor, a sliding mechanism, a sleeving mechanism, a pressing mechanism, a transmission gear, a transmission plate and a jacking mechanism, wherein the upper end of the jacking device is rotationally connected with the placing plate through a pin shaft, sliding grooves are symmetrically formed in the left side and the right side of the lower end of the placing plate, the two-way screws are arranged between the two sliding grooves and are in penetrating and rotating connection with the placing plate through bearings, the right end of each two-way screw is fixedly connected with an output shaft of the driving motor, the driving motor is fixedly connected with the placing plate through a motor base, the outer surfaces of the two-way screws are in bilateral symmetry threaded connection with the sliding mechanism, sleeving mechanisms are symmetrically arranged at the front and the back of the two ends of each sliding mechanism, the sleeving mechanism at the rear side is in penetrating and sliding connection with the sliding mechanism, the sleeving mechanism at the front side is fixedly connected with the sliding mechanism, and the sleeving mechanism is in sliding fit with the placing plate, the inner end of the sheathing mechanism is provided with a pressing mechanism, the outer end of the sheathing mechanism positioned on the front side is rotatably connected with a transmission gear, the inner wall of the transmission gear is paved with a rubber ring, a transmission plate is arranged below the transmission gear, the upper end of the transmission plate is symmetrically provided with an inclined plane, the upper end of the inclined plane is uniformly provided with a plurality of gear teeth, the transmission plate is fixedly connected with the upper end of a placing plate, the upper end of the placing plate is uniformly and slidably connected with a plurality of jacking mechanisms, when the drawing scroll sleeving mechanism works, firstly, a drawing scroll is manually placed on the placing plate and is inserted into the sheathing mechanism, the sheathing mechanism on the rear side is manually pushed according to the width of the drawing scroll, the two sheathing mechanisms are matched, so that the drawing scroll is limited, the drawing scroll is simultaneously inserted into the rubber ring in the transmission gear, the rubber ring plays a role of increasing the friction force between the transmission gear and the drawing scroll, then, a driving motor is manually started, the driving motor drives the two sliding mechanisms to separate through a bidirectional screw rod, the sliding mechanism drives the picture scroll to be unfolded through the sleeve establishing mechanism, the sleeve establishing mechanism drives the pressing mechanism to smooth the picture scroll, the phenomenon that the picture scroll protrudes upwards to cause surface unevenness is avoided, the sleeve establishing mechanism located on the front side drives the transmission gear to be meshed with gear teeth on the transmission plate, and finally after picture scroll display is completed, the driving motor is started manually, the driving motor is enabled to rotate reversely, the driving motor drives the two sliding mechanisms to gather through the bidirectional screw rod, the sliding mechanism drives the transmission gear to be meshed with the gear teeth on the transmission plate through the sleeve establishing mechanism, rolling processing is carried out on the picture scroll, meanwhile, the sliding mechanism pushes the jacking mechanism when rolling, the jacking mechanism carries out intermittent jacking on the picture scroll, the compactness of the picture scroll is ensured, and the phenomenon that the picture scroll after the picture scroll is prevented from being loosened is caused.
The sleeving mechanism comprises a movable plate, a jacking rod, a limiting rod, a sleeving ring, a connecting spring, a clamping rod, a clamping spring, a pushing arc frame and a positioning screw rod, the movable plate and the sliding mechanism which are positioned at the rear side are connected in a penetrating and sliding manner, the movable plate and the sliding mechanism which are positioned at the front side are fixedly connected, the upper end of the movable plate is provided with a jacking groove, the jacking groove is internally connected with the jacking rod in a sliding manner, one end of the jacking rod far away from the sliding mechanism is provided with the limiting rod, the limiting rod is connected with the movable plate in a sliding manner, the upper end of the jacking rod is provided with the sleeving ring, the connecting spring is fixedly connected between the lower end of the sleeving ring and the movable plate, the side wall of the sleeving ring is uniformly connected with the clamping rods in a sliding manner along the circumferential direction of the side wall, the two ends of the clamping rods are symmetrically and rotatably connected with balls, the outer surface of the clamping rod is provided with a circular plate, the clamping spring is fixedly connected between the circular plate and the sleeving ring, the outer surface of the sleeving ring is connected with the pushing arc frame in a sliding manner, push away extrusion arc frame upper end screw thread through connection and have positioning screw, concrete during operation, at first the drawing scroll inserts two cover and establishes the intra-annular, artifical slip is located the pushing arc frame of front side, pushing arc frame drives the clamping bar through the ball on the clamping bar and feeds, the clamping bar passes through the ball of the other end and draws the scroll contact, thereby it is spacing to drawing scroll, artifical rotation positioning screw, positioning screw carries out spacing fixed to pushing arc frame, later according to the width of drawing, the artifical movable plate relative sliding mechanism who promotes to be located the rear side removes the certain distance, artifical slip is located the pushing arc frame of rear side, pushing arc frame carries on spacingly through the clamping bar to drawing scroll, at last the cover when needs expand the drawing is established the ring and is driven the drawing scroll and move, simultaneously the drawing scroll passes through the ball and establishes the intra-annular and rotates, thereby realize the function that the volume drawing unreels.
As a preferred technical scheme of the invention, the jacking device comprises an electric push rod and a jacking rod, the electric push rod is arranged on the lower end wall of the inner part of the rectangular groove, the jacking rod is arranged at the upper end of the electric push rod, the upper end of the jacking rod is rotatably connected with the placing plate through a pin shaft, when the drawing scroll lifting device works specifically, after a drawing scroll is unfolded, the electric push rod is started according to actual needs, the electric push rod jacks the placing plate in a horizontal state to an inclined state through the jacking rod, and the slope surface at the upper end of the mobile platform facilitates the rotation of the placing plate, so that the observation is facilitated.
As a preferred technical scheme of the invention, the sliding mechanism comprises a sliding plate, an auxiliary plate, a pushing rod, a right-angled trapezoidal block and a jacking block, the outer surface of the bidirectional screw is in threaded through connection with the sliding plate, the sliding plate is in sliding connection with the placing plate, the auxiliary plate is arranged at the inner end of the sliding plate through a support rod, the pushing rod is in sliding connection with the middle of the auxiliary plate, the right-angled trapezoidal block is arranged at the upper end of the pushing rod, the jacking block is arranged above the pushing rod and is in sliding connection with the upper end of the auxiliary plate, during specific work, the right-angled trapezoidal block is in a state of being separated from the jacking block before the scroll is unfolded, a driving motor is manually started, the driving motor drives the two sliding plates to be separated through the bidirectional screw, when the scroll is completely unfolded, the sliding plate drives the pushing rod to be in contact with the inner end wall of the rectangular groove to be matched, the pushing rod is forced to drive the right-angled trapezoidal block to jack, when the scroll rolling, artifical start driving motor, and make driving motor antiport, driving motor drives two sliding plates through two-way screw rod and gathers together, the sliding plate drives the accessory plate when removing, the accessory plate drives the jacking piece through jacking mechanism below, the jacking piece jacks up the jacking mechanism, make the scroll receive the power of dragging intermittently at the rolling time, thereby ensure the compactness of scroll rolling, avoid the scroll after the rolling to appear loose phenomenon, after the scroll rolling completely, the sliding plate drives the push rod and cooperates with the inner wall contact of rectangular channel, the push rod atress drives right angle trapezoidal piece and the separation of jacking piece.
According to a preferred technical scheme, the pressing mechanism comprises an L-shaped rod, a lower pressing block, a lower pressing spring and a rolling roller, the L-shaped rod is installed at the inner end of the moving plate, the lower pressing rod is installed at the upper end of the L-shaped rod, a lower pressing groove is formed in the lower end of the lower pressing rod, the lower pressing block is connected to the inner portion of the lower pressing groove in a sliding mode, a plurality of lower pressing springs are evenly installed between the upper end of the lower pressing block and the lower pressing groove, the rolling roller is connected to the lower end of the lower pressing block in a rotating mode, the picture scroll is placed below the rolling roller manually, the moving plate drives the lower pressing rod to move through the L-shaped rod, the lower pressing rod drives the rolling roller to move on the surface of the picture scroll through the lower pressing block, therefore, the picture scroll is leveled, and the phenomenon that the picture scroll is uneven in surface due to upward protrusion is avoided.
As a preferred technical scheme of the invention, the jacking mechanism comprises a jacking plate, a semi-cylinder and a jacking spring, the jacking plate is connected on the placing plate in a penetrating and sliding manner, the semi-cylinder is installed at the lower end of the jacking plate, a plurality of jacking springs are uniformly installed between the upper end of the semi-cylinder and the placing plate, when the device works specifically, the sliding plate drives the jacking block to push the semi-cylinder through the auxiliary plate, the semi-cylinder is stressed to drive the jacking plate to jack up a picture scroll, the picture scroll is stressed to be pulled when being jacked up, so that the tightness of the picture scroll rolling is ensured, and the jacking springs play roles in connecting and resetting the jacking plate.
As a preferred technical scheme of the invention, a plurality of positioning holes are uniformly formed in the sliding plate close to the rear side, positioning pins are connected in the positioning holes in a penetrating and sliding manner, and the positioning pins are connected with the moving plate at the rear side in a penetrating and sliding manner.
As a preferred technical scheme of the invention, a rectangular sliding groove is arranged at the upper end of the placing plate close to the rear side and is in sliding fit with the sheathing mechanism at the rear side, a limiting sliding hole is symmetrically arranged at the left side and the right side of the side wall of the rectangular sliding groove far away from the jacking mechanism and is obliquely arranged, the limiting sliding hole is in sliding fit with the limiting rod at the rear side, a square sliding groove is arranged at the upper end of the placing plate close to the front side and is in sliding fit with the sheathing mechanism at the front side, a sliding through hole is symmetrically arranged at the left side and the right side of the side wall of the square sliding groove far away from the jacking mechanism and is obliquely arranged, the sliding through hole is in sliding fit with the limiting rod at the front side, during specific work, the rectangular sliding groove plays a role in guiding and limiting the moving plate at the rear side, the moving plate at the rear side is manually pushed to slide in the rectangular sliding groove according to the width of a picture scroll, and the limiting sliding hole plays a role in guiding and limiting the limiting rod at the rear side, the gag lever post drives the knock-off lever through the spacing slide opening of slope when removing and descends, and the knock-off lever is established the ring through the cover and is driven the picture scroll axle and descend, ensures the picture scroll when the expansion all the time with place the board contact, avoids the picture scroll phenomenon that the suspension appears, and simultaneously, square spout leads and spacing to being located the front side and moves the board, sliding through hole and the gag lever post sliding fit who is located the front side to lead and spacing to the gag lever post that is located the front side.
As a preferred technical scheme of the invention, one end of the pushing arc frame, which is close to the bidirectional screw rod, is provided with a horn-shaped arc plate, the arc plate is in sliding fit with the clamping rod, when the pushing arc frame works, the pushing arc frame is manually pushed, the pushing arc frame pushes balls on the clamping rod through the horn-shaped arc plate, and the clamping rod is in contact with the picture scroll through the balls at the other end, so that the picture scroll is limited.
The teaching mobile workbench for propaganda and explanation has the beneficial effects that the picture unfolding device adopted by the teaching mobile workbench for propaganda and explanation can be correspondingly adjusted according to the different widths of the picture scroll, so that the functions of limiting and unfolding the picture scrolls with different widths are realized, the using flexibility of the workbench is improved, the surface of the picture scroll can be flattened while the picture scroll is unfolded, the phenomenon of protrusion of the unfolded picture scroll is avoided, and the unfolding smoothness of the picture scroll is improved.
2. The picture unfolding device adopted by the teaching mobile workbench for propaganda and explanation provided by the invention can intermittently lift the picture scroll when the picture scroll is rolled, so that a pulling force is intermittently applied to the picture scroll, the rolling tightness of the picture scroll is ensured, the phenomenon that the rolled picture scroll is loose is avoided, and the rolling effect of the picture scroll is improved.
3. The jacking device adopted by the teaching mobile workbench for propaganda and explanation provided by the invention can jack the picture scroll and change the display angle of the picture scroll, thereby facilitating the observation of the picture scroll and the propaganda and explanation.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a perspective view (from front to back) of the mobile station and the exhibition device of the present invention.
Fig. 3 is a schematic perspective view (from back to front) of the mobile station and the poster device of the present invention.
Fig. 4 is a front view of the present invention.
Fig. 5 is a cross-sectional view of the present invention.
Fig. 6 is a cross-sectional view a-a of fig. 4 in accordance with the present invention.
Fig. 7 is an enlarged view of the invention in the direction of N in fig. 6.
Fig. 8 is an enlarged view of the invention in the direction X of fig. 5.
Fig. 9 is an enlarged view of the invention taken along direction D in fig. 5.
Fig. 10 is a cross-sectional view of the hold-down lever, hold-down block, hold-down spring and stitching roller of the present invention.
In the figure: 1. a mobile station; 2. a jacking device; 21. an electric push rod; 22. a jacking rod; 3. a picture exhibition device; 31. placing the plate; 31a, a slide groove; 31b, a limiting slide hole; 31c, a square chute; 31d, a sliding through hole; 31e, a rectangular chute; 32. a bidirectional screw; 33. a drive motor; 34. a sliding mechanism; 341. a sliding plate; 341a, positioning holes; 341b, a positioning pin; 342. an auxiliary plate; 343. a pushing rod; 344. a right-angled trapezoidal block; 345. jacking blocks; 35. a sleeving mechanism; 351. moving the plate; 352. jacking up the rod; 353. a limiting rod; 354. sleeving a ring; 355. a connecting spring; 356. a clamping lever; 357. a clamping spring; 358. pushing the arc frame; 359. positioning a screw rod; 36. a pressing mechanism; 361. an L-shaped rod; 362. a lower pressure lever; 363. pressing the block; 364. pressing down the spring; 365. rolling rollers; 37. a transmission gear; 38. a drive plate; 39. a jack-up mechanism; 391. jacking up the plate; 392. a semi-cylinder; 393. jacking up the spring; 4. and (4) a glass cover.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 10, refer to fig. 1, a teaching mobile workbench for propaganda and explanation, including mobile station 1, jacking device 2, exhibition drawing device 3 and glass cover 4, 1 lower extreme of mobile station rotate through removing the frame and be connected with the removal wheel, the rectangular channel has been seted up to 1 upper end of mobile station, 1 upper end of mobile station is provided with domaticly near the front side, jacking device 2 is installed to the inside lower extreme wall of rectangular channel, 2 upper ends of jacking device are connected with exhibition drawing device 3 through the round pin hub rotation, 3 upper ends of exhibition drawing device are pegged graft and are had glass cover 4.
Referring to fig. 2 and 5, the exhibition drawing device 3 includes a placing plate 31, a bidirectional screw 32, a driving motor 33, a sliding mechanism 34, a sleeving mechanism 35, a pressing mechanism 36, a transmission gear 37, a transmission plate 38 and a jacking mechanism 39, the upper end of the jacking device 2 is rotatably connected with the placing plate 31 through a pin shaft, sliding grooves 31a are symmetrically formed at the lower end of the placing plate 31, the bidirectional screw 32 is arranged between the two sliding grooves 31a, the bidirectional screw 32 is rotatably connected with the placing plate 31 through a bearing in a penetrating manner, the right end of the bidirectional screw 32 is fixedly connected with an output shaft of the driving motor 33, the driving motor 33 is fixedly connected with the placing plate 31 through a motor base, the sliding mechanism 34 is symmetrically and threadedly connected with the outer surface of the bidirectional screw 32 in a penetrating manner, the sleeving mechanisms 35 are symmetrically arranged at the front and back of the two ends of the sliding mechanism 34, the sleeving mechanism 35 at the rear side is slidably connected with the sliding mechanism 34 in a penetrating manner, the sleeving mechanism 35 positioned on the front side is fixedly connected with the sliding mechanism 34, the sleeving mechanism 35 is in sliding fit with the placing plate 31, the pressing mechanism 36 is installed at the inner end of the sleeving mechanism 35, the outer end of the sleeving mechanism 35 positioned on the front side is rotatably connected with the transmission gear 37, a rubber ring is laid on the inner wall of the transmission gear 37, a transmission plate 38 is arranged below the transmission gear 37, inclined planes are symmetrically arranged at the upper end of the transmission plate 38, a plurality of gear teeth are uniformly installed at the upper ends of the inclined planes, the transmission plate 38 is fixedly connected with the upper end of the placing plate 31, a plurality of jacking mechanisms 39 are uniformly and slidably connected at the upper end of the placing plate 31, when the automatic drawing machine works, firstly, a drawing scroll is manually placed on the placing plate 31, the drawing scroll is inserted into the sleeving mechanism 35, the two sleeving mechanisms 35 positioned on the rear side are manually pushed according to the width of the drawing scroll, the two sleeving mechanisms 35 are matched, so that the drawing scroll is limited, and the drawing scroll is simultaneously inserted into the rubber ring in the transmission gear 37, the rubber ring plays a role in increasing friction force between the transmission gear 37 and the scroll of the picture scroll, then the driving motor 33 is manually started, the driving motor 33 drives the two sliding mechanisms 34 to separate through the bidirectional screw 32, the sliding mechanisms 34 drive the picture scroll to unfold through the sleeving mechanism 35, meanwhile, the sleeving mechanism 35 drives the pressing mechanism 36 to smooth the picture scroll, the phenomenon that the picture scroll protrudes upwards to cause uneven surface is avoided, the sleeving mechanism 35 positioned on the front side drives the transmission gear 37 to be meshed with gear teeth on the transmission plate 38, finally, after the picture scroll display is completed, the driving motor 33 is manually started and reversely rotates, the driving motor 33 drives the two sliding mechanisms 34 to gather through the bidirectional screw 32, the sliding mechanism 34 drives the transmission gear 37 to be meshed with the gear teeth on the transmission plate 38 through the sleeving mechanism 35 to wind the picture scroll, and simultaneously, the sliding mechanism 34 pushes the jacking mechanism 39 during rolling, and the jacking mechanism 39 jacks up the picture scroll intermittently, so that the tightness of the picture scroll rolling is ensured, and the phenomenon that the rolled picture scroll is loose is avoided.
Referring to fig. 7, the sleeving mechanism 35 includes a moving plate 351, a jacking rod 352, a limiting rod 353, a sleeving ring 354, a connecting spring 355, a clamping rod 356, a clamping spring 357, a pushing arc frame 358 and a positioning screw 359, the moving plate 351 at the rear side is slidably connected with the sliding mechanism 34 in a penetrating manner, the moving plate 351 at the front side is fixedly connected with the sliding mechanism 34, a jacking groove is formed at the upper end of the moving plate 351, the jacking rod 352 is slidably connected inside the jacking groove, the limiting rod 353 is installed at one end of the jacking rod 352 far away from the sliding mechanism 34, the limiting rod 353 is slidably connected with the moving plate 351, the sleeving ring 354 is installed at the upper end of the jacking rod 352, the connecting spring 355 is fixedly connected between the lower end of the sleeving ring 354 and the moving plate 351, a plurality of clamping rods 356 are uniformly slidably connected to the side wall of the sleeving ring 354 along the circumferential direction thereof, two ends of the clamping rods 356 are symmetrically connected with rolling balls, and circular plate balls are installed on the outer surface of the clamping rods 356, a clamping spring 357 is fixedly connected between the circular plate and the sleeving rings 354, the outer surfaces of the sleeving rings 354 are slidably connected with pushing arc frames 358, the upper ends of the pushing arc frames 358 are in threaded through connection with positioning screws 359, during specific work, firstly, the scroll painting reel is inserted into the two sleeving rings 354, the pushing arc frame 358 positioned on the front side is manually slid, the pushing arc frame 358 drives a clamping rod 356 to feed through balls on the clamping rod 356, the clamping rod 356 is contacted with the scroll painting reel through balls on the other end to limit the scroll painting reel, the positioning screws 359 are manually rotated to limit and fix the pushing arc frame 358, then, according to the width of the scroll painting, the movable plate 351 positioned on the rear side is manually pushed to move for a certain distance relative to the sliding mechanism 34, the pushing arc frame 358 positioned on the rear side is manually slid, the pushing arc frame 358 limits the scroll painting reel through the clamping rod 356, and finally, the sleeving rings 354 drive the scroll painting reel to move when the scroll is required to be unfolded, meanwhile, the scroll of the picture scroll rotates in the sleeve ring 354 through the ball, so that the function of unwinding the picture scroll is realized.
Referring to fig. 7, the pushing arc frame 358 is provided with a horn-shaped arc plate 358a at one end close to the bidirectional screw 32, the arc plate 358a is in sliding fit with the clamping rod 356, during specific work, the pushing arc frame 358 is manually pushed, the pushing arc frame 358 pushes the ball on the clamping rod 356 through the horn-shaped arc plate 358a, the clamping rod 356 is in contact with the scroll of the picture scroll through the ball at the other end, and therefore the scroll of the picture scroll is limited.
Referring to fig. 2 and 3, a rectangular sliding groove 31e is formed at the upper end of the placing plate 31 near the rear side, the rectangular sliding groove 31e is in sliding fit with the sheathing mechanism 35 at the rear side, the side wall of the rectangular sliding groove 31e away from the jacking mechanism 39 is bilaterally symmetrical and is obliquely provided with a limiting sliding hole 31b, the limiting sliding hole 31b is in sliding fit with the limiting rod 353 at the rear side, a square sliding groove 31c is formed at the upper end of the placing plate 31 near the front side, the square sliding groove 31c is in sliding fit with the sheathing mechanism 35 at the front side, the side wall of the square sliding groove 31c away from the jacking mechanism 39 is bilaterally symmetrical and is obliquely provided with a sliding through hole 31d, the sliding through hole 31d and the limiting sliding through hole 31b have the same structure, the sliding through hole 31d is in sliding fit with the limiting rod 353 at the front side, when the rectangular sliding plate 31e works in a concrete way, the rectangular sliding groove 31e plays a role of guiding and limiting the moving plate 351 at the rear side, according to the width of the picture scroll, the movable plate 351 located on the rear side is manually pushed to slide in the rectangular sliding groove 31e, the limiting sliding hole 31b has the function of guiding and limiting the limiting rod 353 located on the rear side, the limiting rod 353 drives the jacking rod 352 to descend through the inclined limiting sliding hole 31b when moving, the jacking rod 352 drives the picture scroll to descend through the sleeve-arranged ring 354, the picture scroll is enabled to be always in contact with the placing plate 31 when being unfolded, the phenomenon that the picture scroll is suspended due to the fact that the thickness of the picture scroll gradually decreases along with the unfolding of the picture scroll is avoided, meanwhile, the square sliding groove 31c guides and limits the movable plate 351 located on the front side, the sliding through hole 31d is in sliding fit with the limiting rod 353 located on the front side, and therefore the limiting rod 353 located on the front side can be guided and limited.
Referring to fig. 8, the sliding mechanism 34 includes a sliding plate 341, an auxiliary plate 342, a pushing rod 343, a right-angled trapezoidal block 344 and a lifting block 345, the outer surface of the bidirectional screw 32 is connected with the sliding plate 341 in a threaded manner, the sliding plate 341 is connected with the placing plate 31 in a sliding manner, a plurality of positioning holes 341a are uniformly formed in the position of the sliding plate 341 close to the rear side, positioning pins 341b are connected in the positioning holes 341a in a sliding manner, the positioning pins 341b are connected in a sliding manner with the moving plate 351 located at the rear side in a sliding manner, the auxiliary plate 342 is installed at the inner end of the sliding plate 341 through a supporting rod, the pushing rod 343 is connected in a sliding manner in the middle of the auxiliary plate 342 in a penetrating manner, the right-angled trapezoidal block 344 is installed at the upper end of the pushing rod 343, the lifting block 345 is arranged above the pushing rod 343, the lifting block 345 is connected in a sliding manner with the upper end of the auxiliary plate 342, when the moving plate is operated specifically, the moving plate 351 located at the rear side is manually pushed to slide on the sliding plate 341 to slide, after the moving plate 351 drives the sleeving ring 354 to be sleeved and contacted with the scroll of the painting roll, the positioning pin 341b is manually inserted into the moving plate 351 and the positioning hole 341a, so as to limit the moving plate 351, before the painting roll is unfolded, the right-angle trapezoidal block 344 is in a state of being separated from the jacking block 345, the driving motor 33 is manually started, the driving motor 33 drives the two sliding plates 341 to be separated through the two-way screw rod 32, when the painting roll is completely unfolded, the sliding plates 341 drive the pushing rod 343 to be in contact fit with the inner end wall of the sliding groove 31a, the pushing rod 343 drives the right-angle trapezoidal block 344 to jack the jacking block 345 under the force of the pushing rod 343, when the painting roll is wound, the driving motor 33 is manually started, the driving motor 33 reversely rotates, the driving motor 33 drives the two sliding plates 341 to be gathered through the two-way screw rod 32, the auxiliary plate 342 is driven to move when the sliding plate 341 moves, the auxiliary plate 342 drives the jacking block 345 to pass below the jacking mechanism 39, jacking block 345 jacks up jacking mechanism 39, so that the scroll is intermittently subjected to a pulling force during the rolling time, the tightness of the rolling of the scroll is ensured, the phenomenon that the rolled scroll is loose is avoided, when the scroll is completely rolled, sliding plate 341 drives pushing rod 343 to be in contact fit with the inner end wall of sliding groove 31a, and pushing rod 343 is stressed to drive right-angle trapezoidal block 344 to be separated from jacking block 345.
Referring to fig. 3 and 10, the pressing mechanism 36 includes an L-shaped rod 361, a lower pressing rod 362, a lower pressing block 363, a lower pressing spring 364 and a rolling roller 365, the L-shaped rod 361 is installed at the inner end of the moving plate 351, the lower pressing rod 362 is installed at the upper end of the L-shaped rod 361, a lower pressing groove is formed at the lower end of the lower pressing rod 362, a lower pressing block 363 is slidably connected inside the lower pressing groove, a plurality of lower pressing springs 364 are evenly installed between the upper end of the lower pressing block 363 and the lower pressing groove, the lower end of the lower pressing block 363 is rotatably connected with the rolling roller 365, the picture scroll is manually placed below the rolling roller 365, the moving plate 351 drives the lower pressing rod 362 to move through the L-shaped rod 361, the lower pressing rod 362 drives the rolling roller 365 to move on the surface of the picture scroll through the lower pressing block 363, so as to smooth the picture scroll, and avoid the phenomenon that the picture scroll is uneven on the surface due to upward protrusion.
Referring to fig. 9, the jacking mechanism 39 comprises a jacking plate 391, a semi-cylinder 392 and a jacking spring 393, the placing plate 31 is connected with the jacking plate 391 in a penetrating and sliding mode, the semi-cylinder 392 is installed at the lower end of the jacking plate 391, a plurality of jacking springs 393 are evenly installed between the upper end of the semi-cylinder 392 and the placing plate 31, in the specific work process, the sliding plate 341 drives the jacking block 345 to push the semi-cylinder 392 through the auxiliary plate 342, the semi-cylinder 392 is stressed to drive the jacking plate 391 to jack up the painting roll, the painting roll is pulled when being jacked up, so that the tightness of the painting roll is ensured, and the jacking spring 393 plays a role in connection and resets the jacking plate 391.
Referring to fig. 6, the jacking device 2 includes electric putter 21 and jacking rod 22, the inside lower end wall of rectangular channel install electric putter 21, jacking rod 22 is installed to electric putter 21 upper end, jacking rod 22 upper end is connected with placing board 31 through the round pin axle rotation, during concrete work, after the scroll is expanded, start electric putter 21 according to actual need, electric putter 21 is through jacking rod 22 with the horizontal state place board 31 jack-up to the tilt state, the domatic rotation of placing board 31 of being convenient for of moving platform 1 upper end.
When in use: s1: firstly, manually placing a painting scroll on the placing plate 31, inserting the painting scroll into the sleeving ring 354, manually sliding the pushing arc frame 358 positioned at the front side, driving the clamping rod 356 to feed through the balls on the clamping rod 358, contacting the clamping rod 356 with the painting scroll through the balls at the other end, manually rotating the positioning screw 359 positioned at the front side, limiting and fixing the pushing arc frame 358 through the positioning screw 359, then manually pushing the moving plate 351 positioned at the rear side to be matched with the sliding plate 341 according to the width of the painting scroll, limiting through the positioning pin 341b, manually sliding the pushing arc frame 358 positioned at the front side, limiting the painting scroll through the clamping rod 356 by the pushing arc frame 358, manually rotating the positioning screw 359 positioned at the front side, limiting and fixing the pushing arc frame 358 through the positioning screw 359, and simultaneously inserting the painting scroll into the rubber ring of the transmission gear 37, finally, the glass cover 4 is manually inserted into the placing plate 31.
S2: the driving motor 33 is manually started, the driving motor 33 drives the two sliding plates 341 to separate through the bidirectional screw 32, the sliding plates 341 drive the sleeved rings 354 to move through the moving plate 351, the sleeved rings 354 drive the picture scroll to unfold, meanwhile, the moving plate 351 drives the lower pressing rod 362 to move through the L-shaped rod 361, the lower pressing rod 362 drives the rolling roller 365 to move on the surface of the picture scroll through the lower pressing block 363, so that the picture scroll is smoothed, when the picture scroll is completely unfolded, the sliding plate 341 drives the pushing rod 343 to be in contact fit with the inner end wall of the sliding groove 31a, and the pushing rod 343 is stressed to drive the right-angled trapezoidal block 344 to jack the jacking block 345.
S3: the electric push rod 21 is manually started according to actual needs, and the electric push rod 21 jacks up the horizontal placing plate 31 to an inclined state through the jacking rod 22, so that the observation is facilitated.
S4: after the picture scroll propaganda is released, the driving motor 33 is manually started, the driving motor 33 is enabled to rotate reversely, the driving motor 33 drives the two sliding plates 341 to gather together through the bidirectional screw 32, the sliding plates 341 drive the jacking block 345 to push the cylinder 392 through the auxiliary plate 342, the semi-cylinder 392 is stressed to drive the jacking plate 391 to jack the picture scroll, and therefore the tightness of the picture scroll is ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a teaching mobile workbench for propaganda explanation, includes mobile station (1), jacking system (2), exhibition drawing device (3) and glass cover (4), its characterized in that: the lower end of the moving platform (1) is rotatably connected with moving wheels through a moving frame, the upper end of the moving platform (1) is provided with a rectangular groove, the lower end wall inside the rectangular groove is provided with a jacking device (2), the upper end of the jacking device (2) is rotatably connected with a picture display device (3) through a pin shaft, and the upper end of the picture display device (3) is spliced with a glass cover (4); wherein:
the jacking device (2) comprises an electric push rod (21) and a jacking rod (22), the electric push rod (21) is installed on the lower end wall of the inner part of the rectangular groove, the jacking rod (22) is installed at the upper end of the electric push rod (21), and the upper end of the jacking rod (22) is rotatably connected with the placing plate (31) through a pin shaft;
the exhibition drawing device (3) comprises a placing plate (31), two-way screws (32), a driving motor (33), a sliding mechanism (34), a sleeving mechanism (35), a pressing mechanism (36), a transmission gear (37), a transmission plate (38) and a jacking mechanism (39), wherein the upper end of the jacking device (2) is rotatably connected with the placing plate (31) through pin shafts, sliding grooves (31a) are formed in the lower end of the placing plate (31) in a bilateral symmetry manner, the two-way screws (32) are arranged between the two sliding grooves (31a), the two-way screws (32) are in through rotating connection with the placing plate (31) through bearings, the right end of the two-way screws (32) is fixedly connected with an output shaft of the driving motor (33), the driving motor (33) is fixedly connected with the placing plate (31) through a motor base, and the sliding mechanism (34) is in threaded connection with the outer surface of the two-way screws (32) in a bilateral symmetry manner, the automatic lifting device is characterized in that sleeve mechanisms (35) are symmetrically arranged at the front and back of two ends of a sliding mechanism (34), the sleeve mechanisms (35) located on the rear side are in sliding connection with the sliding mechanism (34) in a penetrating mode, the sleeve mechanisms (35) located on the front side are fixedly connected with the sliding mechanism (34), the sleeve mechanisms (35) are in sliding fit with a placing plate (31), pressing mechanisms (36) are installed at the inner ends of the sleeve mechanisms (35), transmission gears (37) are rotatably connected to the outer ends of the sleeve mechanisms (35) located on the front side, rubber rings are laid on the inner walls of the transmission gears (37), transmission plates (38) are arranged below the transmission gears (37), inclined planes are symmetrically arranged at the upper ends of the transmission plates (38), a plurality of gear teeth are uniformly installed at the upper ends of the inclined planes, the transmission plates (38) are fixedly connected with the upper ends of the placing plate (31), and a plurality of lifting mechanisms (39) are uniformly and slidably connected to the upper end of the placing plate (31);
the sliding mechanism (34) comprises a sliding plate (341), an auxiliary plate (342), a pushing rod (343), a right-angle trapezoidal block (344) and a jacking block (345), the outer surface of the bidirectional screw (32) is in threaded through connection with the sliding plate (341), the sliding plate (341) is in sliding connection with the placing plate (31), the auxiliary plate (342) is installed at the inner end of the sliding plate (341) through a supporting rod, the pushing rod (343) is in sliding connection with the middle of the auxiliary plate (342) in a penetrating manner, the right-angle trapezoidal block (344) is installed at the upper end of the pushing rod (343), the jacking block (345) is arranged above the pushing rod (343), and the jacking block (345) is in sliding connection with the upper end of the auxiliary plate (342); a plurality of positioning holes (341a) are uniformly formed in the sliding plate (341) close to the rear side, positioning pins (341b) penetrate through the positioning holes (341a) in a sliding connection mode, and the positioning pins (341b) penetrate through the moving plate (351) located on the rear side in a sliding connection mode;
the sleeving mechanism (35) comprises a movable plate (351), a jacking rod (352), a limiting rod (353), a sleeving ring (354), a connecting spring (355), a clamping rod (356), a clamping spring (357), a pushing arc frame (358) and a positioning screw (359), the movable plate (351) and the sliding mechanism (34) which are positioned on the rear side are in penetrating sliding connection, the movable plate (351) and the sliding mechanism (34) which are positioned on the front side are fixedly connected, a jacking groove is formed in the upper end of the movable plate (351), the jacking rod (352) is connected in a sliding manner in the jacking groove, the limiting rod (353) is installed at one end, far away from the sliding mechanism (34), of the jacking rod (352), the limiting rod (353) is connected with the movable plate (351) in a sliding manner, the sleeving ring (354) is installed at the upper end of the jacking rod (352), and the connecting spring (355) is fixedly connected between the lower end of the sleeving ring (354) and the movable plate (351), the side wall of the sleeving ring (354) is evenly connected with a plurality of clamping rods (356) in a sliding mode along the circumferential direction of the side wall, the outer surface of each clamping rod (356) is provided with a circular plate, a clamping spring (357) is fixedly connected between each circular plate and the corresponding sleeving ring (354), the outer surface of each sleeving ring (354) is connected with a pushing arc frame (358) in a sliding mode, and the upper end of each pushing arc frame (358) is in threaded penetrating connection with a positioning screw (359); one end of the pushing arc frame (358) close to the bidirectional screw (32) is provided with a horn-shaped arc plate (358a), and the arc plate (358a) is in sliding fit with the clamping rod (356);
hold-down mechanism (36) include L type pole (361), push rod (362), briquetting (363), push down spring (364) and rolling roller (365) down, movable plate (351) the inner install L type pole (361), depression bar (362) are installed down to L type pole (361) upper end, the indent has been seted up to depression bar (362) lower extreme down, the inside sliding connection of indent has push down piece (363), evenly install a plurality of push down spring (364) down between push down piece (363) upper end and the indent down, push down piece (363) lower extreme rotates and is connected with rolling roller (365).
2. An instructional mobile workstation for publicizing an explanation according to claim 1 wherein: jacking mechanism (39) including jacking plate (391), semicylinder (392) and jacking spring (393), place board (31) on run through sliding connection and have jacking plate (391), semicylinder (392) are installed to jacking plate (391) lower extreme, a plurality of jacking springs (393) evenly install between semicylinder (392) upper end and the board of placing (31).
3. An instructional mobile workstation for publicizing an explanation according to claim 1 wherein: place board (31) upper end and be close to the rear side and open and be equipped with rectangle spout (31e), rectangle spout (31e) with be located the rear side establish mechanism (35) sliding fit, rectangle spout (31e) keep away from the lateral wall bilateral symmetry and the slope of jack-up mechanism (39) and seted up spacing slide opening (31b), spacing slide opening (31b) and the gag lever post (353) sliding fit that is located the rear side place board (31) upper end and have seted up square spout (31c) near the front side, square spout (31c) with be located the front side establish mechanism (35) sliding fit, square spout (31c) keep away from the lateral wall bilateral symmetry and the slope of jack-up mechanism (39) and seted up slip through-hole (31d), slip through-hole (31d) and the gag lever post (353) sliding fit that is located the front side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110806940.XA CN113520043B (en) | 2021-07-16 | 2021-07-16 | A teaching shift table for propaganda explanation |
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| CN202110806940.XA CN113520043B (en) | 2021-07-16 | 2021-07-16 | A teaching shift table for propaganda explanation |
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