CN211237379U - Ideological education is with thinking political affairs propaganda equipment - Google Patents

Abstract

The utility model relates to an ideological education propaganda equipment technical field just discloses an ideological education is with thinking political affairs propaganda equipment, including the left side support column, the right side movable mounting of left side support column has the right side support column, the equal fixedly connected with backup pad in bottom of left side support column and right side support column, the top movable mounting of left side support column and right side support column has the weather shield, the equal fixedly connected with one end in the left and right sides of weather shield bottom runs through respectively and extends to the inside inserted bar of left side support column and right side support column. This ideological education is with thinking political affairs propaganda equipment, through aim at the rectangle through-hole respectively with two gag lever posts, then insert the left side inserted bar in the fixed storehouse in the left side, the stripper plate receives the extrusion, makes the telescopic link compressed, and the left side spring is compressed, and two gag lever posts are located two rectangle through-holes respectively simultaneously, move the left side that the right side inserted bar is located the fixed storehouse in right side up to fixed frame.

Description

Ideological education is with thinking political affairs propaganda equipment

Technical Field

The utility model relates to an ideological education propaganda equipment technical field specifically is an ideological education is with thinking political affairs propaganda equipment.

Background

The concept education is the education which affects the thought and the viewpoint of people in all aspects, the narrow meaning is the education which forms a certain world view and a certain life view, the component of school education, the social Chinese concept education takes dialectical materiality and historical materiality as guiding ideas, and the understanding of the whole natural world and the human social development law is taken as the basis, and students are guided to establish scientific life view and world view step by step.

At present in the campus, cause of affairs can be equipped with the ideological education publicity column in unit and the district, simultaneously often hold all kinds of campaign such as square in the open air according to the propaganda needs, a large amount of publicity columns need to be erect this moment, its main objective is the creation activity atmosphere, reach the propaganda and the show purpose of ideological education, the outdoor propaganda removal frame that uses at present frame usually adopts integrative structure, it has the flashing frame to weld the top of support frame, the welding has the show frame between two support frames, then install the flashing on the flashing frame, the content of show is placed in the show frame, this kind of outdoor publicity frame is very hard in removing the transportation, it is big to have area when not using simultaneously, deposit drawback such as inconvenient, the event provides an ideological education with thinking political affairs propaganda equipment in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an ideological and educational propaganda equipment is used to think political affairs, possess convenient to use's advantage, the frame that the outdoor propaganda removal frame that has used at present usually adopted a body structure, it hides the rain board frame to weld the top of support frame, the welding has display frame between two support frames, then install the dash board at the dash board frame, the content of show has been placed in display frame, this kind of outdoor propaganda frame is very hard in removing the transportation, it is big to have area when not using simultaneously, deposit the problem of drawbacks such as inconvenient.

(II) technical scheme

In order to realize the purpose of the convenient use, the utility model provides a following technical scheme: a think political affairs propaganda equipment for ideological education comprises a left side support column, a right side support column is movably installed on the right side of the left side support column, a support plate is fixedly connected with the bottoms of the left side support column and the right side support column, a rain baffle is movably installed on the tops of the left side support column and the right side support column, insertion rods are fixedly connected with the left side and the right side of the bottom of the rain baffle, one end of each insertion rod penetrates through and extends into the left side support column and the right side support column respectively, a limiting ring is fixedly connected with the outer sides of the two insertion rods, two top U-shaped limiting frames are fixedly connected with the bottom of the rain baffle, a left side fixed bin is movably connected with the right side of the left side support column, a right side fixed bin is movably connected with the left side of the right side support column, a fixed frame is movably, the portable garbage bin comprises a fixed frame, a publicity board is movably mounted in the fixed frame, a left side inserting rod is fixedly connected to the left side of the fixed frame, one end of the left side inserting rod penetrates through and extends into a left side fixed bin, a first telescopic rod is fixedly connected to the left inner wall of the left side fixed bin, a squeezing board is fixedly connected to the right side of the first telescopic rod, a left side spring is sleeved on the outer side of the first telescopic rod, limiting rods are fixedly connected to the top and the bottom of the left side inserting rod, one end of the right side inserting rod penetrates through and extends into the right side fixed bin, a buffer block is fixedly connected to the inner wall of the right side fixed bin, an adjusting bin is movably mounted on the outer side of the right side fixed bin, a thread groove is formed in the inner peripheral wall of the right side fixed bin, and a thread ring is fixedly connected to, the internal perisporium fixedly connected with in regulation storehouse is located the left extrusion ring of screw ring, the internal perisporium fixedly connected with quantity in the fixed storehouse in right side is three metal storehouse, quantity is seted up for three draw-in groove to the periphery wall of right side inserted bar, the periphery wall movable mounting in the fixed storehouse in right side has quantity to run through respectively for three and one end and extends to the inside kelly of three draw-in groove, the periphery wall fixedly connected with of kelly is located the inside fender ring in metal storehouse, the outside cover of kelly is equipped with the right side spring that is located metal storehouse inside.

Preferably, the top of the left side support column and the top of the right side support column are both provided with fixing grooves matched with the two insertion rods, and the two limiting rings are located on the same horizontal plane.

Preferably, the distance between the front inner wall of the top U-shaped limiting frame and the inner wall of the back is the same as the width of the fixing frame, and the left side fixing bin is a cylinder with a hollowed-out part and a missing right side.

Preferably, the inner diameter of the left side fixing bin is the same as the diameter of the left side inserting rod, rectangular through holes are formed in the top and the bottom of the left side fixing bin, the width of each rectangular through hole is the same as the diameter of the limiting rod, and the right side of each rectangular through hole and the right side of the left side fixing bin are located on the same plane.

Preferably, the internal perisporium of screw ring is the screw thread, the screw thread and thread groove threaded connection of screw ring through the internal perisporium, the internal perisporium of extrusion ring is the inclined plane, and is three the draw-in groove is located same perpendicular and is circular evenly distributed.

Preferably, it is three the draw-in groove respectively with three kelly looks adaptation, one side that the right side inserted bar was kept away from to the kelly is circular-arc, the metal storehouse is close to one side of right side inserted bar and keeps away from one side of right side inserted bar and all sets up the first through-hole with kelly looks adaptation, the second through-hole that quantity is three and respectively with three kelly looks adaptation is seted up to the periphery wall in the fixed storehouse in right side.

Preferably, the fixed knot constructs including threaded rod, the spacing frame of bottom U type and second telescopic link, the top of fixed frame and the equal movable mounting in bottom have one end to run through and extend to the inside threaded rod of fixed frame, two the equal movable mounting in one side that the threaded rod is relative has the spacing frame of bottom U type, two the equal fixedly connected with quantity in one side that the spacing frame of bottom U type carried on the back mutually is two and respectively with the interior roof of fixed frame and interior roof fixed connection's second telescopic link, two the inside movable mounting of the spacing frame of bottom U type has publicity board, distance between the positive inner wall of the spacing frame of bottom U type and the inner wall at the back is the same with publicity board's width, the screw through-hole with two threaded rod threaded connection respectively has all been seted up to the top and the bottom.

(III) advantageous effects

Compared with the prior art, the utility model provides an ideological and educational propaganda equipment with thinking political affairs possesses following beneficial effect:

1. the ideological education ideological and political propaganda equipment is characterized in that two limiting rods are respectively aligned to rectangular through holes, then a left inserting rod is inserted into a left fixing bin, an extrusion plate is extruded to enable a telescopic rod to be compressed, a left spring is compressed, the two limiting rods are respectively positioned in the two rectangular through holes at the same time until a fixing frame moves to the left side that a right inserting rod is positioned in a right fixing bin, then the right inserting rod is inserted into the right fixing bin and extrudes a buffer block until the three clamping rods respectively correspond to three clamping grooves, at the moment, the left inserting rod is still positioned in the left fixing bin, then an adjusting bin is rotated to enable a threaded ring to rotate, the adjusting bin is enabled to move to the left side through threaded connection of threads on the inner peripheral wall of the threaded ring and threaded grooves, an extrusion ring is driven to move to the left side, the extrusion ring can extrude the clamping rods, and further enable the three clamping rods to be, and then fixed with the right side inserted bar, then can rotate fixed frame, when rotating the face that needs the propaganda, can insert two inserted bars respectively in left side support column and the right side support column, make two spacing framves of top U type can be fixed with fixed frame, the fast assembly of whole propaganda frame has been realized, the propaganda frame is in moving the transportation, can dismantle each part then carrying, and then make whole device carry more convenient, area is also less when not using simultaneously.

2. The ideological education ideological and political affairs propaganda equipment comprises a propaganda board placed in a fixed frame, a threaded rod is rotated to enable the two threaded rods to move relatively through being in threaded connection with a threaded through hole, two bottom U-shaped limiting frames are driven to move relatively, so that the propaganda board is fixed and stable, when the propaganda board needs to be disassembled, only the threaded rod needs to be rotated reversely, the bottom U-shaped limiting frames do not limit the position of the propaganda board any more, then the propaganda board can be disassembled, rapid installation and disassembly of the propaganda board are realized, later replacement is convenient, a rain shield is jacked upwards to drive two insertion rods to move upwards, two top U-shaped limiting frames are both moved upwards, the fixed frame can be rotated for one hundred eighty degrees until the two fixed frame top U-shaped limiting frames do not limit and fix any more, then the rain shield is not jacked any more, so that the top U-shaped limiting frames continue to limit and fix the fixed frame, the realization demonstrates the back of publicity board, and the staff can all design publicity board two sides, and the accessible rotates the mode of fixed frame and switches when propaganda, and then makes whole device use more convenient and practical.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the right side fixing bin of the present invention;

fig. 3 is a cross-sectional view of the left side fixing bin of the present invention.

In the figure: 1 left side support column, 2 left side fixed warehouses, 3 publicity board, 4 backup pads, 5 fixed frames, 6 right side support columns, 7 right side fixed warehouses, 8 top U type spacing, 9 fixed knot construct, 10 inserted bar, 11 spacing rings, 12 extrusion ring, 13 regulation storehouse, 14 screw ring, 15 thread groove, 16 buffer block, 17 metal storehouse, 18 draw-in grooves, 19 right side inserted bars, 20 fender ring, 21 right side spring, 22 kelly, 23 extrusion plate, 24 gag lever post, 25 left side inserted bars, 26 left side spring, 27 first telescopic link, 28 weather shield.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a thinking and political publicity device for ideological education comprises a left side supporting column 1, a right side supporting column 6 movably mounted on the right side of the left side supporting column 1, a supporting plate 4 fixedly connected to the bottoms of the left side supporting column 1 and the right side supporting column 6, a rain baffle 28 movably mounted on the tops of the left side supporting column 1 and the right side supporting column 6, inserting rods 10 with one ends respectively penetrating and extending to the insides of the left side supporting column 1 and the right side supporting column 6 fixedly connected to the left side and the right side of the bottom of the rain baffle 28, fixing grooves respectively matched with the two inserting rods 10 formed on the tops of the left side supporting column 1 and the right side supporting column 6, limiting rings 11 fixedly connected to the outsides of the two inserting rods 10, the two limiting rings 11 are located on the same horizontal plane, two top U-shaped limiting frames 8 are fixedly connected to the bottoms of the rain baffle 28, the left side fixed bin 2 is a cylinder with a hollowed inside and a missing right side, the left side of the right side supporting column 6 is movably connected with a right side fixed bin 7, the right side fixed bin 7 is a cylinder with a hollowed inside and a missing left side, a fixed frame 5 is movably installed between the left side fixed bin 2 and the right side fixed bin 7, the distance between the front inner wall and the back inner wall of a top U-shaped limiting frame 8 is the same as the width of the fixed frame 5, fixed structures 9 are fixedly installed at the top and the bottom of the fixed frame 5, a publicity board 3 is movably installed inside the fixed frame 5, each fixed structure 9 comprises a threaded rod, a bottom U-shaped limiting frame and a second telescopic rod, each second telescopic rod comprises a second loop rod and a second moving rod, one end of each second moving rod penetrates through and extends to the inside of the second loop rod, and a second limiting block positioned inside the second loop rod is fixedly connected to the bottom of the, the top of the second loop bar is provided with a second through hole matched with the second moving bar, the second moving bar is prevented from being separated from the second loop bar in the moving process by arranging a second limiting block, the top and the bottom of the fixed frame 5 are both movably provided with threaded rods, one ends of the threaded rods penetrate through and extend into the fixed frame 5, one sides of the two threaded rods opposite to each other are both movably provided with a bottom U-shaped limiting frame, one sides of the two bottom U-shaped limiting frames opposite to each other are both fixedly connected with two second telescopic rods, the number of the second telescopic rods is two, the second telescopic rods are respectively and fixedly connected with the inner top wall and the inner top wall of the fixed frame 5, the propaganda board 3 is movably arranged in the two bottom U-shaped limiting frames, the distance between the front inner wall and the back inner wall of the bottom U-shaped limiting frame is the same as the width of the propaganda board 3, the left side fixedly connected with one end of the fixed frame 5 runs through and extends to the left side inserted bar 25 inside the left side fixed bin 2, the inner diameter of the left side fixed bin 2 is the same as the diameter of the left side inserted bar 25, the first telescopic link 27 fixedly connected with the left inner wall of the left side fixed bin 2 is formed by the first loop bar and the first moving bar, one end of the first moving bar runs through and extends to the inside of the first loop bar, the bottom fixedly connected with outside the first moving bar is located at the first limit block inside the first loop bar, the first through hole matched with the first moving bar is formed in the top of the first loop bar, through the arrangement of the first limit block, the first moving bar is prevented from being separated from the first loop bar in the moving process, the right side fixedly connected with extrusion plate 23 of the first telescopic link 27, the left side spring 26 is sleeved outside the first telescopic link 27, the top and bottom of the left side inserted bar 25 are respectively run through and extend to the limit blocks at the top and the bottom of the left side fixed bin 2 24, rectangular through holes are formed in the top and the bottom of the left fixing bin 2, the width of each rectangular through hole is the same as the diameter of the limiting rod 24, the right side of each rectangular through hole and the right side of the left fixing bin 2 are located on the same plane, one end of the right side of the fixing frame 5 is fixedly connected with a right inserting rod 19 which penetrates through and extends into the right fixing bin 7, a buffer block 16 is fixedly connected with the inner wall of the right side of the right fixing bin 7, an adjusting bin 13 is movably mounted on the outer side of the right fixing bin 7, the adjusting bin 13 is in a cylindrical shape with hollow interior, circular through holes matched with the right fixing bin 7 are formed in the left side and the right side of the adjusting bin 13, a thread groove 15 is formed in the outer peripheral wall of the right fixing bin 7, a thread ring 14 is fixedly connected with the inner peripheral wall of the adjusting bin 13, the inner peripheral wall of the, the inner peripheral wall of the adjusting bin 13 is fixedly connected with an extrusion ring 12 positioned on the left side of the threaded ring 14, the inner peripheral wall of the extrusion ring 12 is an inclined plane, the inner peripheral wall of the right side fixing bin 7 is fixedly connected with three metal bins 17, the outer peripheral wall of the right side insert rod 19 is provided with three clamping grooves 18, the three clamping grooves 18 are positioned on the same vertical plane and are circularly and uniformly distributed, the outer peripheral wall of the right side fixing bin 7 is movably provided with three clamping rods 22, one ends of the three clamping rods respectively penetrate through and extend into the three clamping grooves 18, the three clamping grooves 18 are respectively matched with the three clamping rods 22, one side of each clamping rod 22, which is far away from the right side insert rod 19, is arc-shaped, first through holes matched with the clamping rods 22 are respectively formed in one side of each metal bin 17, which is close to the right side insert rod 19, and one side of each clamping rod, the outer peripheral wall of the right side, the outer peripheral wall of kelly 22 is fixedly connected with and is located the inside fender ring 20 of metal storehouse 17, and the outside cover of kelly 22 is equipped with and is located the inside right side spring 21 of metal storehouse 17.

In summary, in the ideological education propaganda equipment, two limit rods 24 are respectively aligned with rectangular through holes, then a left insert rod 25 is inserted into the left fixed bin 2, a squeezing plate 23 is squeezed, a telescopic rod 27 is compressed, a left spring 26 is compressed, and simultaneously two limit rods 24 are respectively positioned in the two rectangular through holes until the fixed frame 5 moves until a right insert rod 19 is positioned at the left side of the right fixed bin 7, then the right insert rod 19 is inserted into the right fixed bin 7 and squeezes a buffer block 16 until three clamp rods 22 respectively correspond to three clamp grooves 18, at which time the left insert rod 25 is still positioned in the left fixed bin 2, then the adjusting bin 13 is rotated to rotate the threaded ring 14, so that the adjusting bin 13 is screwed with the threaded groove 15 through threads on the inner peripheral wall of the threaded ring 14 to move to the left, the squeezing ring 12 is driven to move leftwards, and the squeezing ring 12 can squeeze the clamp rods 22, further three kelly 22 of messenger can insert respectively in three draw-in groove 18, and then it is fixed with right side inserted bar 19, then can rotate fixed frame 5, when the face that needs the propaganda is rotated, can insert two inserted bars 10 respectively in left side support column 1 and right side support column 6, make two spacing framves of top U type 8 can be fixed frame 5, the fast assembly of whole propaganda frame has been realized, the propaganda frame is in the removal transportation, can dismantle each part then carrying, and then make whole device carry more convenient, area is also less when not using simultaneously.

Moreover, the publicity board 3 is placed in the fixed frame 5, then the threaded rod is rotated to enable the two threaded rods to move relatively through being in threaded connection with the threaded through hole, so as to drive the two bottom U-shaped limiting frames to move relatively, thereby fixing and stabilizing the publicity board 3, when the publicity board 3 needs to be disassembled, only the threaded rod needs to be rotated reversely, so that the bottom U-shaped limiting frames do not limit the publicity board 3 any more, then the publicity board 3 can be disassembled, thereby realizing the rapid installation and disassembly of the publicity board 3, facilitating the later replacement, through jacking up the rain shield 28, the two inserting rods 10 are driven to move upwards, so that the two top U-shaped limiting frames 8 both move upwards, until the two top U-shaped limiting frames 8 do not limit and fix the fixed frame 5 any more, the fixed frame 5 can be rotated by one hundred eighty degrees, then the rain shield 28 is not jacked up any more, so that the top U-shaped limiting frames 8 continue to limit and fix the fixed frame, the realization is demonstrateed the back of publicity board 3, the staff can all design publicity board 3 two sides, the accessible rotates the mode of fixed frame 5 and switches when propaganda, and then make whole device use more convenient and practical, the frame that outdoor propaganda removal frame that has solved at present used generally adopts a body structure, it has the dash board frame to weld the top of support frame, the welding has display frame between two support frames, then install dash board at dash board frame shelf location, the content of show has been placed in display frame, this kind of outdoor propaganda frame is very hard in removing the transportation, it is big to have area when not using simultaneously, the problem of drawbacks such as inconvenient deposits.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an ideological and educational propaganda equipment with thinking political affairs, includes left side support column (1), its characterized in that: the right side movable mounting of left side support column (1) has right side support column (6), the bottom of left side support column (1) and right side support column (6) all fixedly connected with backup pad (4), the top movable mounting of left side support column (1) and right side support column (6) has weather shield (28), the left and right sides of weather shield (28) bottom all fixedly connected with one end respectively run through and extend to the inside inserted bar (10) of left side support column (1) and right side support column (6), the outside of two inserted bars (10) all fixedly connected with spacing ring (11), the bottom of weather shield (28) is fixedly connected with the top U type spacing frame (8) that the quantity is two, the right side movable connection of left side support column (1) has left side fixed bin (2), the left side movable connection of right side support column (6) has right side fixed bin (7), the movable mounting has fixed frame (5) between left side fixed bin (2) and right side fixed bin (7), the equal fixed mounting in top and the bottom of fixed frame (5) has fixed knot to construct (9), the inside movable mounting of fixed frame (5) has publicity board (3), the left side fixedly connected with one end of fixed frame (5) runs through and extends to the left side inserted bar (25) inside left side fixed bin (2), the left inner wall fixedly connected with first telescopic link (27) of left side fixed bin (2), the right side fixedly connected with stripper plate (23) of first telescopic link (27), the outside cover of first telescopic link (27) is equipped with left side spring (26), the equal fixedly connected with one end in top and the bottom of left side inserted bar (25) runs through respectively and extends to gag lever post (24) of left side fixed bin (2) top and bottom, the right side of the fixed frame (5) is fixedly connected with a right side inserted bar (19) one end of which penetrates through and extends to the inside of the right side fixed bin (7), the inner wall on the right side of the right side fixed bin (7) is fixedly connected with a buffer block (16), the outer side of the right side fixed bin (7) is movably provided with an adjusting bin (13), the peripheral wall of the right side fixed bin (7) is provided with a thread groove (15), the inner peripheral wall of the adjusting bin (13) is fixedly connected with a thread ring (14), the inner peripheral wall of the adjusting bin (13) is fixedly connected with an extrusion ring (12) positioned on the left side of the thread ring (14), the inner peripheral wall of the right side fixed bin (7) is fixedly connected with three metal bins (17), the peripheral wall of the right side inserted bar (19) is provided with three clamping grooves (18), the peripheral wall of the right side fixed bin (7) is movably provided with clamping bars (22) one ends of which penetrate through and, the outer peripheral wall fixedly connected with of kelly (22) is located inside fender ring (20) of metal storehouse (17), the outside cover of kelly (22) is equipped with right side spring (21) that are located metal storehouse (17) inside.

2. The ideological education political propaganda apparatus according to claim 1, wherein: the top of left side support column (1) and right side support column (6) all seted up respectively with two fixed slots that insert pole (10) looks adaptation, two spacing ring (11) are located same horizontal plane.

3. The ideological education political propaganda apparatus according to claim 1, wherein: the distance between the front inner wall of the top U-shaped limiting frame (8) and the inner wall of the back is the same as the width of the fixing frame (5), and the left side fixing bin (2) is in the shape of a cylinder with hollow inside and missing right side.

4. The ideological education political propaganda apparatus according to claim 1, wherein: the inside diameter of the left side fixed bin (2) is the same as the diameter of the left side inserted bar (25), rectangular through holes are formed in the top and the bottom of the left side fixed bin (2), the width of each rectangular through hole is the same as the diameter of the limiting rod (24), and the right side of each rectangular through hole and the right side of the left side fixed bin (2) are located on the same plane.

5. The ideological education political propaganda apparatus according to claim 1, wherein: the internal perisporium of screw ring (14) is the screw thread, screw ring (14) are through the screw thread and thread groove (15) threaded connection of internal perisporium, the internal perisporium of extrusion ring (12) is the inclined plane, and is three draw-in groove (18) are located same perpendicular and are circular evenly distributed.

6. The ideological education political propaganda apparatus according to claim 1, wherein: it is three draw-in groove (18) respectively with three kelly (22) looks adaptation, one side that right side inserted bar (19) were kept away from in kelly (22) is circular-arc, metal storehouse (17) are close to one side of right side inserted bar (19) and keep away from one side of right side inserted bar (19) and all offer the first through-hole with kelly (22) looks adaptation, the second through-hole that quantity was three and respectively with three kelly (22) looks adaptation is seted up to the periphery wall in the fixed storehouse in right side (7).

7. The ideological education political propaganda apparatus according to claim 1, wherein: fixed knot constructs (9) including threaded rod, the spacing frame of bottom U type and second telescopic link, the top of fixed frame (5) and the equal movable mounting in bottom have one end to run through and extend to the inside threaded rod of fixed frame (5), two the equal movable mounting in one side that the threaded rod is relative has the spacing frame of bottom U type, two the equal fixedly connected with quantity in one side that the spacing frame of bottom U type was carried on the back mutually is two and respectively with the interior roof of fixed frame (5) and interior roof fixed connection's second telescopic link, two the inside movable mounting of the spacing frame of bottom U type has publicity board (3), distance between the positive inner wall of the spacing frame of bottom U type and the inner wall at the back is the same with the width of publicity board (3), the top and the bottom of fixed frame (5) all set up respectively with two threaded rod threaded connection's screw through-hole.

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