CN113053212B - Show shelf that teaching was used - Google Patents
Show shelf that teaching was used Download PDFInfo
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- CN113053212B CN113053212B CN202110013963.5A CN202110013963A CN113053212B CN 113053212 B CN113053212 B CN 113053212B CN 202110013963 A CN202110013963 A CN 202110013963A CN 113053212 B CN113053212 B CN 113053212B
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- rod
- fixedly connected
- plates
- side plates
- placing plate
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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
- G09B19/18—Book-keeping or economics
Abstract
The invention provides a display rack for teaching, which belongs to the technical field of teaching tools and comprises a bottom rod, wherein the upper end of the bottom rod is fixedly connected with a U-shaped connecting rack, the left inner wall and the right inner wall of the U-shaped connecting rack are movably hinged with an outer tube through hinge shafts, a lifting rod is slidably connected between the inner walls of the outer tubes, a height adjusting mechanism is arranged between the lifting rod and the outer tube, the upper end of the lifting rod is movably hinged with a placing plate through hinge shafts, the left side and the right side of the placing plate are provided with expanding mechanisms, the rear end of the U-shaped connecting rack is provided with a limiting mechanism, and an angle adjusting mechanism is arranged between the placing plate and the lifting rod.
Description
Technical Field
The invention belongs to the technical field of teaching aids, and particularly relates to a display rack for teaching.
Background
In the prior art, industrial and commercial management is a subject for researching the basic theory and the general method of the economic management of industrial and commercial enterprises, and mainly comprises two aspects of business strategy formulation and internal behavior management of the enterprises. The industrial and commercial management profession has strong applicability, and the aim of the method is to carry out effective enterprise management and operation decision by using modern management methods and means according to basic theories such as management, economics, accounting and the like so as to ensure the survival and development of enterprises.
The in-process that the business administration specialty was imparting knowledge to students often can use the show shelf, present show shelf most is bulky, can not fold, can occupy great space, inconvenient placing, be difficult to carry out suitable altitude mixture control according to actual conditions simultaneously, can not carry out angle modulation according to actual conditions, often adopt sleeve structure in the extending structure of the show shelf that has horizontal flexible design in addition, when the slope pivoted is realized in the cooperation, this telescopic mobile end excessively slips or unexpected excessively nestedly easily, lead to the difficult stability control of show shelf target width, this defect is especially when show shelf slope location.
Disclosure of Invention
The invention aims to provide a display rack for teaching, and aims to solve the problems that most of the existing display racks in the prior art are large in size, cannot be folded, occupy large space, are inconvenient to place, are difficult to adjust the height according to actual conditions, and cannot adjust the angle according to the actual conditions.
In order to achieve the purpose, the invention provides the following technical scheme:
a display rack for teaching comprises a bottom rod, wherein the upper end of the bottom rod is fixedly connected with a U-shaped connecting frame, the left inner wall and the right inner wall of the U-shaped connecting frame are movably hinged with an outer tube through hinge shafts, a lifting rod is slidably connected between the inner walls of the outer tubes, a height adjusting mechanism is arranged between the lifting rod and the outer tube, the upper end of the lifting rod is movably hinged with a placing plate through hinge shafts, the left side and the right side of the placing plate are provided with expansion mechanisms, the rear end of the U-shaped connecting frame is provided with a limiting mechanism, an angle adjusting mechanism is arranged between the placing plate and the lifting rod, and the left side and the right side of the bottom rod are provided with a stabilizing mechanism;
the height adjusting mechanism comprises a fixing box, the fixing box is fixedly connected to the right end of the outer tube, a driving gear is rotatably connected to the lower inner wall of the fixing box through a rotating shaft, a rotating rod is fixedly connected to the upper end of the driving gear, the upper end of the rotating rod penetrates through the upper side of the fixing box, a driven gear is rotatably connected to the lower inner wall of the outer tube through a rotating shaft, a screw rod is fixedly connected to the upper end of the driven gear, the circumferential surface of the screw rod is in threaded connection with the inner wall of the lifting rod, the expanding mechanism comprises two rectangular tubes, the two rectangular tubes are respectively and fixedly connected to the upper end and the lower end of the placing plate, a set of telescopic rods are respectively and fixedly connected to the left end and the right end of the two rectangular tubes, each set of the two telescopic rods is fixedly connected to each other, a side plate is fixedly connected to one end of each of the two telescopic rods far away from each other, a set of the two ends of the two side plates close to each other are respectively and inserted into the placing plate, and the two sets of the inserting plates are distributed in a staggered manner; the sides of the two side plate bodies far away from each other are respectively adhered with a magnetic strip,
the limiting mechanism comprises a limiting rotating piece, the limiting rotating piece is movably hinged to the right part of the rear end of the U-shaped connecting frame through a hinge shaft, the left part of the rear end of the U-shaped connecting frame is fixedly connected with a fixed block, the fixed block is located on the lower side of the limiting rotating piece, the angle adjusting mechanism comprises a T-shaped sliding groove, the T-shaped sliding groove is formed in the front end of the lifting rod, a T-shaped sliding block is connected between the inner walls of the T-shaped sliding groove in a sliding mode, a connecting rod is movably hinged between the front end of the upper portion of the T-shaped sliding block and the lower end of a rectangular tube located on the lower side through the hinge shaft, a fixing bolt is connected to the front end of the lower portion of the T-shaped sliding block in a threaded mode, the stabilizing mechanism comprises two extending plates, the two extending plates are parallel to each other, the two extending plates are respectively inserted into the left end and the right end of the bottom rod, a stabilizing rod is fixedly connected to one end, a telescopic auxiliary rod is hinged to each stabilizing rod, and a magnetic block with a rotatable magnetic pole facing is embedded in the auxiliary rod;
and the lower end of the right part of the extension plate is fixedly connected with a limiting block, the upper end of the left part of the extension plate is fixedly connected with the same limiting block, the two limiting blocks are parallel, and the upper end of the rectangular tube is fixedly connected with a handle.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the magnetic strips are arranged on the side edges of the telescopic sleeves and the telescopic magnetic rods which are hinged and rotated are arranged below the telescopic sleeves, so that the target length and the target inclination can be stably displayed on the telescopic sleeves without an external auxiliary mechanism.
2. In this scheme, the hinge through U type link and outer tube connection department makes the outer tube rotate, make the show shelf fold and expand, show shelf after folding conveniently places, show shelf after the expansion makes the outer tube fix through stop gear, stop gear limits the outer tube, make the show shelf keep firm, height adjustment mechanism can adjust the height of show shelf according to the actual conditions at scene, angle adjustment mechanism can make the angle of placing the board carry out suitable regulation, the article of placing on the board is convenient for people to observe, extension mechanism can increase the area of placing the board and placing article, can also shrink when not using, reduce the occupation to the space.
3. In this scheme, through pulling two firm poles, make two firm poles carry out the extension about through two extension plates respectively, through adjusting the distance between two firm poles, make the further firm of whole show shelf, when the show shelf does not use, make two firm poles remove both ends about the sill bar respectively through two extension plates, realize firm mechanism's shrink, thereby reduce the volume of show shelf, two stoppers restrict the slip of two extension plates, prevent that two tensile distances of extension plate from extracting in the sill bar excessively, the handle can make whole show shelf shrink rear just carry.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a first elevational view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 taken at A in the present invention;
FIG. 3 is a second elevational view of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at B in the present invention;
FIG. 5 is a cross-sectional view of the present invention;
FIG. 6 is a sectional top view of the present invention;
FIG. 7 is an enlarged view of FIG. 6 at C in the present invention.
In the figure: 1. a bottom bar; 2. a U-shaped connecting frame; 3. an outer tube; 4. a lifting rod; 5. a fixing box; 501. a driving gear; 502. a rotating rod; 503. a driven gear; 504. a screw; 6. placing the plate; 7. a rectangular tube; 701. a telescopic rod; 702. a side plate; 703. inserting plates; 8. limiting and rotating the sheet; 801. a fixed block; 9. a T-shaped chute; 901. a T-shaped slider; 902. a connecting rod; 903. fixing the bolt; 10. an extension plate; 101. a stabilizing rod; 11. a limiting block; 12. a handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-7, the present invention provides the following technical solutions:
a display rack for teaching comprises a bottom rod 1, wherein the upper end of the bottom rod 1 is fixedly connected with a U-shaped connecting frame 2, the left inner wall and the right inner wall of the U-shaped connecting frame 2 are movably hinged with an outer tube 3 through hinge shafts, a lifting rod 4 is slidably connected between the inner walls of the outer tube 3, a height adjusting mechanism is arranged between the lifting rod 4 and the outer tube 3, the upper end of the lifting rod 4 is movably hinged with a placing plate 6 through hinge shafts, the left side and the right side of the placing plate 6 are provided with expanding mechanisms, the rear end of the U-shaped connecting frame 2 is provided with a limiting mechanism, an angle adjusting mechanism is arranged between the placing plate 6 and the lifting rod 4, and the left side and the right side of the bottom rod 1 are provided with stabilizing mechanisms;
the height adjusting mechanism comprises a fixed box 5, the fixed box 5 is fixedly connected to the right end of the outer tube 3, a driving gear 501 is rotatably connected to the lower inner wall of the fixed box 5 through a rotating shaft, a rotating rod 502 is fixedly connected to the upper end of the driving gear 501, the upper end of the rotating rod 502 penetrates through the upper side of the fixed box 5, a driven gear 503 is rotatably connected to the lower inner wall of the outer tube 3 through a rotating shaft, a screw 504 is fixedly connected to the upper end of the driven gear 503, the circumferential surface of the screw 504 is in threaded connection with the inner wall of the lifting rod 4, the expanding mechanism comprises two rectangular tubes 7, the two rectangular tubes 7 are respectively and fixedly connected to the upper end and the lower end of the placing plate 6, a set of telescopic rods 701 is fixedly connected to the left end and the right end of each rectangular tube 7, two sets of telescopic rods 701 are respectively and fixedly connected to the space between the two sets of telescopic rods 701, a side plate 702 is fixedly connected to the two sets of telescopic rods 701, one end of each side plate 702 close to the two sets of telescopic rods 703 are respectively and are fixedly connected to a set of inserting plates 703, and are distributed in a staggered manner; the sides of the two side plates 702 far away from each other are attached with a magnetic strip,
the limiting mechanism comprises a limiting rotating sheet 8, the limiting rotating sheet 8 is movably hinged to the right part of the rear end of the U-shaped connecting frame 2 through a hinge shaft, the left part of the rear end of the U-shaped connecting frame 2 is fixedly connected with a fixing block 801, the fixing block 801 is positioned on the lower side of the limiting rotating sheet 8, the angle adjusting mechanism comprises a T-shaped sliding groove 9, the T-shaped sliding groove 9 is cut in the front end of the lifting rod 4, a T-shaped sliding block 901 is connected between the inner walls of the T-shaped sliding groove 9 in a sliding mode, a connecting rod 902 is movably hinged between the front end of the upper portion of the T-shaped sliding block 901 and the lower end of the rectangular tube 7 positioned on the lower side through the hinge shaft, a fixing bolt 903 is connected to the front end of the lower portion of the T-shaped sliding block 901 in a threaded mode, the stabilizing mechanism comprises two extension plates 10, the two extension plates 10 are parallel, the two extension plates 10 are respectively inserted into the left end and the right end of the bottom rod 1, one end, far away from the two extension plates 10 is fixedly connected with a stabilizing rod 101, a telescopic auxiliary rod is hinged to each stabilizing rod 101, and a magnetic block facing the magnetic pole is embedded in each auxiliary rod;
the lower end of the right part of the extension plate 10, which is positioned on the left side, is fixedly connected with a limiting block 11, the upper end of the left part of the extension plate 10, which is positioned on the right side, is fixedly connected with a same limiting block 11, the two limiting blocks 11 are parallel, and the upper end of the rectangular tube 7, which is positioned on the upper side, is fixedly connected with a handle 12.
In the embodiment of the invention, when the display shelf is not in use, the extension mechanism is contracted into the placing plate 6, then the angle adjusting mechanism is released to enable the placing plate 6 to be in a vertical state, then the lifting rod 4 is contracted into the outer tube 3 through the height adjusting mechanism, then the limiting mechanism is opened to enable the outer tube 3 to be folded on the bottom rod 1 through the hinge shaft at the joint of the U-shaped connecting frame 2, finally the stabilizing mechanism is contracted to enable the whole display shelf to be folded, the size of the display shelf is reduced, when the display shelf is used, the outer tube 3 is erected on the upper side of the bottom rod 1 through the hinge shaft at the joint of the U-shaped connecting frame 2 and the outer tube 3, the outer tube 3 is fixed through the limiting mechanism, then the lifting rod 4 is enabled to move upwards in the outer tube 3 through the height adjusting mechanism to enable the placing plate 6 to move to a proper height, after the height adjustment is completed, the display area of the placing plate 6 is increased through pulling the extension mechanism, then the inclination angle adjusting mechanism is enabled to enable displayed articles on the placing plate 6 to be convenient for people to watch, then the contact area of the display shelf with the ground is enlarged through the height adjusting mechanism, and the whole display shelf, and the stability of the display shelf is increased.
Specifically, please refer to fig. 5, the height adjusting mechanism includes a fixing box 5, the fixing box 5 is fixedly connected to the right end of the outer tube 3, the lower inner wall of the fixing box 5 is rotatably connected to a driving gear 501 through a rotating shaft, the upper end of the driving gear 501 is fixedly connected to a rotating rod 502, the upper end of the rotating rod 502 penetrates through the upper side of the fixing box 5, the lower inner wall of the outer tube 3 is rotatably connected to a driven gear 503 through a rotating shaft, the upper end of the driven gear 503 is fixedly connected to a screw rod 504, and the circumferential surface of the screw rod 504 is in threaded connection with the inner wall of the lifting rod 4.
In the embodiment of the invention, the driving gear 501 rotates by rotating the rotating rod 502, the area of the driving gear 501 is larger than that of the driven gear 503, so that the rotating rod 502 only needs to rotate a few turns to enable the driven gear 503 to rotate more turns, the driven gear 503 enables the screw 504 to also rotate more turns, and only a small section of the lower part of the inner wall of the lifting rod 4 is provided with threads, so that the screw 504 enables the lifting rod 4 not to have larger friction force to block the movement of the lifting rod 4 in the moving process, the height of the whole display shelf is adjusted by rotating the rotating rod 502, the display shelf can be suitable for different environments, the height of the display shelf is shortened by a height adjusting mechanism when the device is not used, the volume of the display shelf is reduced, and the display shelf is convenient to place.
Specifically, please refer to fig. 1, the expanding mechanism includes two rectangular pipes 7, the two rectangular pipes 7 are respectively and fixedly connected to the upper and lower ends of the placing plate 6, a set of telescopic rods 701 is fixedly connected to the left and right ends of the two rectangular pipes 7, each set of telescopic rods 701 is two, and the two sets of telescopic rods 701 are fixedly connected to each other, a side plate 702 is fixedly connected to each end of the two sets of telescopic rods 701 away from each other, a set of inserting plates 703 is fixedly connected to each end of the two side plates 702 close to each other, one ends of the two sets of inserting plates 703 close to each other are respectively inserted into the placing plate 6, and the two sets of inserting plates 703 are distributed in a staggered manner.
In the embodiment of the invention, the two telescopic rods 701 of each group are respectively fixedly connected to the inside of the rectangular pipe 7, the inside of the placing plate 6 is hollow, the left end and the right end of the placing plate 6 are open, the two groups of telescopic rods 701 can be extended by pulling the two side plates 702, so that the two groups of inserting plates 703 are pulled out of the placing plate 6, each group of inserting plates 703 is respectively provided with a plurality of inserting plates 703, and the two groups of inserting plates 703 are distributed in a staggered manner, so that the two groups of inserting plates 703 can be retracted into the placing plate 6 simultaneously, when the device is not used, the two groups of inserting plates 703 are retracted towards the placing plate 6 by pushing the two side plates 702, the two groups of telescopic rods 701 are retracted, so that the two side plates 702 are respectively contacted with the left end and the right end of the placing plate 6, thereby reducing the display area of the placing plate 6 and facilitating the storage of the whole display shelf.
Specifically, referring to fig. 4, the limiting mechanism includes a limiting rotating plate 8, the limiting rotating plate 8 is movably hinged to the right portion of the rear end of the U-shaped connecting frame 2 through a hinge shaft, the left portion of the rear end of the U-shaped connecting frame 2 is fixedly connected with a fixing block 801, and the fixing block 801 is located on the lower side of the limiting rotating plate 8.
In the embodiment of the invention, the rear end of the U-shaped connecting frame 2 is open, the rear end of the U-shaped connecting frame 2 can be opened by rotating the limiting rotary piece 8 rightwards, so that the outer tube 3 can rotate, the outer tube 3 and the bottom rod 1 can be folded, the whole display frame is more portable, when the limiting rotary piece 8 rotates leftwards and is lapped on the fixing block 801, the limiting rotary piece 8 limits the outer tube 3, the outer tube 3 is kept stable in a vertical state, and the stability of the display frame is improved.
Specifically, referring to fig. 2, the angle adjusting mechanism includes a T-shaped chute 9,T and a chute 9 drilled at the front end of the lifting rod 4, a T-shaped slider 901 is slidably connected between the inner walls of the T-shaped chute 9, a connecting rod 902 is movably hinged between the upper front end of the T-shaped slider 901 and the lower end of the rectangular tube 7 at the lower side through a hinge shaft, and a fixing bolt 903 is threadedly connected to the lower front end of the T-shaped slider 901.
In the embodiment of the present invention, the T-shaped slider 901 is made to slide upwards in the T-shaped chute 9 through the connecting rod 902, after the T-shaped slider 901 slides upwards, the angle of the placing plate 6 is changed, and the lower end of the placing plate 6 is inclined by a certain angle, so that the articles placed on the placing plate 6 can be more conveniently viewed by people, the inclined angle of the placing plate 6 is adjusted according to the sliding distance of the T-shaped slider 901 in the T-shaped chute 9, the lower part of the T-shaped slider 901 is provided with a threaded hole, a fixing bolt 903 is screwed in the threaded hole, when the angle of the placing plate 6 is adjusted to a proper position, the fixing bolt 903 is made to contact with the rear inner wall of the T-shaped chute 9 by rotating the fixing bolt 903 clockwise, so as to increase friction force, so that the T-shaped slider 901 is kept fixed in the T-shaped chute 9, the angle of the placing plate 6 is kept, when the display shelf is not in use, the fixed, the fixing bolt 903 is rotated counterclockwise, so that the T-shaped slider 901 is loosened, the T-shaped slider 901 slides downwards under the action of gravity, the placing plate 6 is parallel to the outer tube 3 through the connecting rod 902, so that the display shelf is conveniently placed on the display shelf.
Specifically, referring to fig. 3, the stabilizing mechanism includes two extension plates 10, the two extension plates 10 are parallel to each other, the two extension plates 10 are respectively inserted into the left and right ends of the bottom rod 1, and the ends of the two extension plates 10 far away from each other are fixedly connected to a stabilizing rod 101.
In the embodiment of the present invention, in order to further ensure the stability of the display rack, the two stabilizing rods 101 are extended left and right by the two extending plates 10 by pulling the two stabilizing rods 101, the whole display rack is further stabilized by adjusting the distance between the two stabilizing rods 101, and when the display rack is not in use, the two stabilizing rods 101 are moved to the left and right ends of the bottom rod 1 by the two extending plates 10, so as to achieve the contraction of the stabilizing mechanism, thereby reducing the volume of the display rack.
Specifically, referring to fig. 5, the lower end of the right portion of the left extension board 10 is fixedly connected with a limiting block 11, the upper end of the left portion of the right extension board 10 is fixedly connected with the same limiting block 11, and the two limiting blocks 11 are parallel.
In the embodiment of the present invention, the two stoppers 11 limit the sliding of the two extension boards 10, so as to prevent the two extension boards 10 from being pulled out from the bottom rod 1 by an excessively long distance.
Specifically, referring to fig. 1, a handle 12 is fixedly connected to the upper end of the upper rectangular tube 7.
In the embodiment of the invention, the handle 12 enables the entire display rack to be retracted for carrying.
The working principle and the using process of the invention are as follows: the outer tube 3 is rotated by rotating the limiting rotary piece 8 to the right side of the fixed block 801, the outer tube 3 is rotated by a hinge shaft at the joint of the U-shaped connecting frame 2 and the outer tube 3, the outer tube 3 and the U-shaped connecting frame 2 are in the same straight line, then the limiting rotary piece 8 is rotated again, the limiting rotary piece 8 is lapped on the upper end of the fixed block 801, the outer tube 3 is limited by the limiting rotary piece 8, the outer tube 3 is stabilized, the driving gear 501 on the lower inner wall of the fixed box 5 is rotated by rotating the rotary rod 502, the driving gear 501 drives the driven gear 503 in the outer tube 3 to rotate, the driven gear 503 rotates the screw rod 504, the lifting rod 4 is upwards slid in the outer tube 3 by the screw rod 504, so that the height of the placing plate 6 is adjusted, after the height of the placing plate 6 is adjusted, the two side plates 702 are respectively pulled, so that the two side plates 702 are respectively extended by the two groups of telescopic rods 701, meanwhile, the two groups of inserting plates 703 move to the left and right sides of the placing plate 6 respectively along with the two side plates 702, so that the display area of the placing plate 6 for placing articles is increased, then the fixing bolt 903 is rotated anticlockwise to enable the T-shaped slider 901 to slide in the T-shaped chute 9, the connecting rod 902 enables the T-shaped slider 901 to slide upwards, so that the angle of the placing plate 6 is adjusted, after the angle adjustment is completed, the fixing bolt 903 is rotated clockwise to enable the rear end of the fixing bolt 903 to be in contact with the rear inner wall of the T-shaped chute 9, so that the friction force between the fixing bolt 903 and the T-shaped chute 9 is increased, the T-shaped slider 901 is kept fixed in the T-shaped chute 9, the adjusted angle of the placing plate 6 is kept, in order to further ensure the stability of the display frame, the two stabilizing rods 101 are pulled to enable the two stabilizing rods 101 to respectively extend left and right through the two extension plates 10, through adjusting the distance between two firm poles 101, make whole show shelf further firm, when the show shelf does not use, through with extension mechanism to placing the inboard 6 adduction of board, then relax angle adjustment mechanism and make and place board 6 and become vertical state, rethread height adjustment mechanism makes lifter 4 to the outer tube 3 internal contraction, then open stop gear and make outer tube 3 fold on sill bar 1 through the hinge with 2 junctions of U type link, the last firm mechanism that contracts, thereby make whole show shelf fold, reduce the volume of show shelf.
In addition, after the two side plates 702 are pulled to extend to the right position, if the two side plates 702 are perpendicular to the ground, the fixing rod 101 is hinged to a telescopic auxiliary rod, the magnetic blocks with rotatable magnetic pole orientations are embedded in the auxiliary rod body, specifically, the telescopic auxiliary rod of the fixing rod 101 on each side is vertically extended, the angle between the auxiliary rod and the hinged part on the fixing rod 101 is adjusted to be perpendicular to the fixing rod 101, the magnetic pole orientations of the magnetic blocks on the telescopic auxiliary rod are adjusted, so that the two telescopic auxiliary rods touch and are simultaneously adsorbed to the magnetic strips of the nearby side plates 702, and the two side plates 702 are kept in place.
After the two side plates 702 are pulled to extend to the proper position, if the two side plates 702 are inclined to the ground, the magnetic pole orientation on the auxiliary rod near the lower side plate 702 is adjusted to repel the side plate 702, and the magnetic pole orientation on the auxiliary rod near the upper side plate 702 is adjusted to be adsorbed on the side plate 702, so that the attraction force or the repulsion force of the magnetic strip and the magnetic block on the nearby telescopic auxiliary rod overcomes the component force of the gravity of the side plate 702 in the direction of the inclined angle.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (1)
1. The utility model provides a show shelf of teaching use, includes sill bar (1), its characterized in that: the upper end of the bottom rod (1) is fixedly connected with a U-shaped connecting frame (2), the left inner wall and the right inner wall of the U-shaped connecting frame (2) are movably hinged with an outer tube (3) through hinge shafts, a lifting rod (4) is connected between the inner walls of the outer tubes (3) in a sliding manner, a height adjusting mechanism is arranged between the lifting rod (4) and the outer tube (3), the upper end of the lifting rod (4) is movably hinged with a placing plate (6) through hinge shafts, the left side and the right side of the placing plate (6) are provided with expanding mechanisms, the rear end of the U-shaped connecting frame (2) is provided with a limiting mechanism, an angle adjusting mechanism is arranged between the placing plate (6) and the lifting rod (4), and the left side and the right side of the bottom rod (1) are provided with stabilizing mechanisms;
the height adjusting mechanism comprises a fixed box (5), the fixed box (5) is fixedly connected with the right end of the outer tube (3), the lower inner wall of the fixed box (5) is rotationally connected with a driving gear (501) through a rotating shaft, the upper end of the driving gear (501) is fixedly connected with a rotating rod (502), the upper end of the rotating rod (502) penetrates to the upper side of the fixed box (5), the lower inner wall of the outer tube (3) is rotationally connected with a driven gear (503) through a rotating shaft, the upper end of the driven gear (503) is fixedly connected with a screw rod (504), the circumferential surface of the screw rod (504) is connected with the inner wall of the lifting rod (4) in a threaded manner, the expansion mechanism comprises two rectangular tubes (7), the two rectangular tubes (7) are respectively and fixedly connected with the upper end and the lower end of the placing plate (6), the left end and the right end of each rectangular tube (7) are respectively and fixedly connected with a group of telescopic rods (701), each group of telescopic rods (701) is two, the two groups of telescopic rods (701) are fixedly connected, the ends, far away from each other, of the two groups of telescopic rods (701) are fixedly connected with side plates (702), the ends, close to each other, of the two side plates (702) are fixedly connected with a group of inserting plates (703), the ends, close to each other, of the two groups of inserting plates (703) are respectively inserted into the placing plate (6), and the two groups of inserting plates (703) are distributed in a staggered mode; the sides of the two side plates (702) far away from each other are respectively attached with a magnetic strip;
the limiting mechanism comprises a limiting rotating sheet (8), the limiting rotating sheet (8) is movably hinged to the right portion of the rear end of the U-shaped connecting frame (2) through a hinge shaft, a fixing block (801) is fixedly connected to the left portion of the rear end of the U-shaped connecting frame (2), the fixing block (801) is located on the lower side of the limiting rotating sheet (8), the angle adjusting mechanism comprises a T-shaped sliding groove (9), the T-shaped sliding groove (9) is drilled at the front end of the lifting rod (4), a T-shaped sliding block (901) is connected between the inner walls of the T-shaped sliding groove (9) in a sliding mode, a connecting rod (902) is movably hinged between the front end of the upper portion of the T-shaped sliding block (901) and the lower end of the rectangular tube (7) located on the lower side through the hinge shaft, a fixing bolt (903) is connected to the front end of the lower portion of the T-shaped sliding block (901) in a threaded mode, the stabilizing mechanism comprises two extending plates (10), the two extending plates (10) are connected between the two extending plates (10) in an inserting mode into the left end and the right end of the bottom rod (1) respectively, one end, far away from one end of each extending plate (10) is fixedly connected with a magnetic block (101), and each extending rod faces towards the corresponding auxiliary stabilizing rod, and each magnetic block (101) is hinged to the corresponding telescopic stabilizing rod;
the lower end of the right part of the extension plate (10) on the left side is fixedly connected with a limiting block (11), the upper end of the left part of the extension plate (10) on the right side is fixedly connected with the same limiting block (11), the two limiting blocks (11) are parallel, and the upper end of the rectangular tube (7) on the upper side is fixedly connected with a handle (12);
after the two side plates (702) are pulled to extend to the right position, if the two side plates (702) are perpendicular to the ground, the telescopic auxiliary rods are hinged on the stabilizing rod (101), the magnetic blocks with rotatable magnetic pole orientation are embedded in the auxiliary rod bodies, specifically, the telescopic auxiliary rods of the stabilizing rod (101) on each side are vertically extended, the angle between the auxiliary rods and the hinged part on the stabilizing rod (101) is adjusted to be perpendicular to the stabilizing rod (101), the magnetic pole orientation of the magnetic blocks on the telescopic auxiliary rods is adjusted, so that the two telescopic auxiliary rods touch and are simultaneously adsorbed on the magnetic strips of the nearby side plates (702), and the two side plates (702) are kept to the right position;
after the two side plates (702) are pulled to be stretched in place, if the two side plates (702) are inclined to the ground, the magnetic pole orientation on the auxiliary rod close to the lower side plate (702) is adjusted to be repelled to the side plates (702), and the magnetic pole orientation on the auxiliary rod close to the upper side plate (702) is adjusted to be adsorbed on the side plates (702), so that the attractive force or the repulsive force of the magnetic strip and the magnetic blocks on the nearby telescopic auxiliary rod overcomes the component force of the gravity of the side plates (702) in the direction of the inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110013963.5A CN113053212B (en) | 2021-01-06 | 2021-01-06 | Show shelf that teaching was used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110013963.5A CN113053212B (en) | 2021-01-06 | 2021-01-06 | Show shelf that teaching was used |
Publications (2)
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