CN215126692U

CN215126692U - Slope exhibition block

Info

Publication number: CN215126692U
Application number: CN202121780067.3U
Authority: CN
Inventors: 刘彦琪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-12-14
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a slope exhibition block, which relates to the exhibition device technical field, one side of a support plate is provided with at least two first slots, a main plate comprises a middle plate and two side plates, the two side plates are symmetrically fixed on the two sides of the middle plate, a first fold line is arranged between each side plate and the middle plate, the side plates are provided with an inserting edge, a second slot is inwards arranged on the side plates from the inserting edge, each side plate can be folded around the first fold line in the mutually approaching direction and form a lateral oblique support, the support plate can be vertically fixed in the middle of the middle plate through the inserting of the first slot and the second slot, the inserting edge is contacted with the middle plate, the inclination angles of the two lateral oblique supports are equal, an outer wall surface of the middle plate deviating from the lateral oblique support is used for contacting and supporting a file, a limit element is also arranged on the main plate, the limit element is used for fixing the file on the outer wall surface of the middle plate deviating from the lateral oblique support, and the file can be removed. This slope exhibition piece bandwagon effect is good, and can disassemble and accomodate.

Description

Slope exhibition block

Technical Field

The utility model relates to an exhibition technical field specifically is a slope exhibition piece is related to.

Background

At exhibitions and exhibitions, some items need to be placed at an angle for the audience to visit. Such as paper, documents, etc., which are flatly arranged on the plane of the exhibition stand, thus being inconvenient for the audience to read.

The slope exhibition blocks used in the current exhibition halls and museums are made of multi-purpose wood, such as solid wood, laminated boards, density boards and the like; then self-tapping nails, nail guns or adhesives are used for connecting all the parts, and the surface of the display block is painted or decorated by cloth.

However, the slope exhibition block made of wood consumes a lot of wood, and a lot of dust and wood chips are generated in the processing process, so that the requirement of a museum on clean environment is not met. The slope exhibition block made of the laminated board, the density board and the like can release harmful gases such as formaldehyde and the like, endanger the safety of cultural relics or exhibits in the showcase and does not meet the requirement of preventive protection of the cultural relics.

Moreover, the wooden slope exhibition block is difficult to disassemble after being manufactured due to the connection process. When not in use, a large amount of space is still needed to be occupied for storage, and the transportation cost is also higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a slope exhibition piece to solve the problem that above-mentioned prior art exists, the bandwagon effect is good, and can disassemble and accomodate.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a slope exhibition block, which comprises a main board and a support board, wherein one side of the support board is provided with at least two first slots, the main board comprises a middle board and two side boards, the two side boards are symmetrically fixed on the two sides of the middle board, a first fold line is arranged between each side board and the middle board, the side board is provided with an inserting edge, the side board is provided with a second slot inwards from the inserting edge, each side board can be folded around the first fold line in the mutually approaching direction and forms a lateral diagonal support, the support board can be vertically fixed in the middle of the middle board by inserting the first slot and the second slot, the inserting edge is contacted with the middle board, the inclination angles of the two lateral diagonal supports are equal, and an outer wall surface of the middle board deviating from the lateral diagonal support is used for contacting and supporting files, the main board is further provided with a limiting element, the limiting element is used for fixing a file on an outer wall surface of the middle board, which deviates from the lateral inclined support, and the file can be taken down.

Preferably, the intermediate lamella is the rectangular plate, and two the curb plate is fixed respectively on two long limits of intermediate lamella, the curb plate is isosceles trapezoid, just a waist of curb plate with intermediate lamella fixed connection, another waist of curb plate does the grafting border, still have on the curb plate two with the base vertically second broken line of curb plate, two the second broken line is respectively certainly two tip at the curb plate upper base extend to on the lower bottom of curb plate, the curb plate can be followed two the second broken line is close to another the direction of curb plate is turned over and is supported in one side of intermediate lamella forms the side bearing diagonal, lie in two on the curb plate area between the second broken line is used for contacting the stand surface.

Preferably, two third folding lines are arranged on the middle plate, are parallel to the short edge of the middle plate and are arranged close to the bottom of the side plate;

two third slots are formed in the short edge, close to the third folding line, of the middle plate;

and a fourth slot is formed in the lower bottom of the side plate, the fourth slot is far away from the middle plate, and the middle plate can be folded along the two third folding lines and is connected with the third slot of the side inclined support in an inserting mode.

Preferably, the connecting plate is isosceles trapezoid, two fourth folding lines are arranged on the connecting plate, the fourth folding lines are perpendicular to the lower bottom of the connecting plate, and the two fourth folding lines extend from two ends of the upper bottom of the connecting plate to the lower bottom of the connecting plate respectively;

the two waists of the connecting plate are respectively provided with a fifth slot which is vertical to the waist of the connecting plate and is symmetrically arranged, the lower bottom of the connecting plate is also provided with two sixth slots which are respectively arranged close to the two waists of the connecting plate, the sixth slots are vertical to the lower bottom of the connecting plate, the two waists of the connecting plate can be respectively turned over along the two fourth folding lines in the mutually close direction to form a middle inclined support, the middle inclined support is used for being inserted between the two side inclined supports, the two sides of the middle inclined support are contacted with one side of each side inclined support, the area between the two fourth folding lines and the area between the two adjacent second folding lines are positioned on the same plane, and the fifth slots are inserted with the first slots, and the sixth slot is inserted into the third slot, and the area between the two fourth folding lines on the connecting plate is used for contacting the surface of the exhibition stand.

Preferably, be close to on the intermediate lamella still be equipped with the extension board on the short edge of curb plate upper base, the extension board with two fifth broken lines have between the intermediate lamella, the fifth broken line is on a parallel with the minor face of intermediate lamella, just the extension board can be followed two the fifth broken line turns over and turns over, and makes the extension board with the intermediate lamella is parallel, just the extension board is located the side bearing diagonal with between the intermediate lamella.

Preferably, the limiting element comprises a flat belt and a belt penetrating hole group, at least two groups of belt penetrating hole groups are arranged on the middle plate and are respectively arranged along the length direction of the short side of the middle plate, each group of belt penetrating hole groups comprise two belt penetrating parts and are the same, two belt penetrating parts in each belt penetrating hole group are close to two short sides of the middle plate respectively and are arranged one by one, two ends of each flat belt penetrate through the two belt penetrating parts in the same group respectively and are located on the middle plate and deviate from one side of the lateral diagonal support, and the flat belt is used for pressing a file on the middle plate.

Preferably, a connecting line between the two threading parts in the same group of threading holes is parallel to the long side of the middle plate, and each threading part comprises two threading holes.

Preferably, the limiting element further comprises a locking module, one flat belt corresponds to one locking module, two friction holes are formed in the locking module, one end of the flat belt can penetrate through the two friction holes from different directions, and the flat belt is prevented from falling out of the through hole.

Preferably, the main board and the support plate are both made of acid-free corrugated paper boards.

The utility model discloses for prior art gain following technological effect:

the utility model provides a slope exhibition block, one side of the support plate is provided with at least two first slots, the main plate comprises a middle plate and two side plates, the two side plates are symmetrically fixed on two sides of the middle plate, a first fold line is arranged between each side plate and the middle plate, the inserting edge of the side plates is provided with a second slot inwards, each side plate can be folded around the first fold line in the direction close to each other and forms a lateral oblique support, the lateral oblique supports are obliquely arranged, and the two lateral oblique supports are positioned on the same side of the middle plate so as to support the middle plate, the support plate can be vertically fixed in the middle of the middle plate through the inserting connection of the first slot and the second slot, and further, the support plate and the main plate are fixed, the middle plate is supported through the support plate and the two lateral oblique supports, so that an outer wall of the middle plate deviating from the lateral oblique supports faces to support and display files, the inclination angles of the two lateral oblique supports are equal, so that two side bearing diagonal support when supporting the intermediate lamella, in not setting up the both sides of curb plate on the intermediate lamella, one side is high, the opposite side is low, the slope show file of being convenient for, be convenient for the visitor watches, and the both sides that are provided with the curb plate are parallel to each other, improve the stability of show, still be equipped with spacing component on the mainboard, spacing component is used for fixing the file and deviates from the outer wall face of side bearing diagonal on the mainboard, and the file can take off, and then prevent the show in-process, the file drops and influences the show, and cause the damage of file, and simultaneously, wholly can disassemble and expand the formation slabby, convenient storage, and the occupation space is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a slope display block provided by the present invention in use;

fig. 2 is a schematic structural diagram of a slope display block provided by the present invention;

fig. 3 is an exploded view of the slope module provided by the present invention, when the inclination angle is 30 °;

fig. 4 is an exploded view of the slope display block provided by the present invention, when the inclination angle is 15 °;

fig. 5 is a schematic structural diagram of a main board in a slope display block provided by the present invention;

fig. 6 is a schematic structural view of a support plate in a slope display block provided by the present invention;

fig. 7 is a schematic structural diagram of a connecting plate in a slope display block provided by the present invention;

fig. 8 is a schematic structural diagram of a locking module in a slope display block provided by the present invention;

fig. 9 is a schematic structural diagram of a limiting element in a slope display block provided by the present invention;

fig. 10 is a schematic view of a first step of installing a slope display block provided by the present invention;

fig. 11 is a schematic view of a second step of installing the slope display block provided by the present invention;

fig. 12 is a schematic view of a third step of installing the slope display block provided by the present invention;

fig. 13 is a schematic view of a fourth step of installing the slope display block provided by the present invention;

fig. 14 is a schematic view of a fifth step of installing the slope display block provided by the present invention;

in the figure: 100-slope exhibition block, 10-main board, 11-middle board, 111-extension board, 12-side board, 13-first folding line, 14-second folding line, 15-third folding line, 16-second slot, 17-third slot, 18-fourth slot, 19-fifth folding line, 20-support board, 21-first slot, 30-connecting board, 31-fourth folding line, 32-fifth slot, 33-sixth slot, 40-limiting element, 41-perforating hole, 42-locking module, 43-bandlet and 200-file.

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.

The utility model aims at providing a slope display block to solve the technical problem that current file display device bandwagon effect is poor, be not convenient for accomodate.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-9, the present invention provides a slope exhibition block 100, which comprises a main board 10 and a support board 20, wherein one side of the support board 20 is provided with at least two first slots 21 (as shown in fig. 6), the main board 10 comprises a middle board 11 and two side boards 12, the two side boards 12 are symmetrically fixed on two sides of the middle board 11, a first folding line 13 is arranged between each side board 12 and the middle board 11, the side boards 12 have an inserting edge, the side boards are provided with a second slot 16 inwards from the inserting edge, each side board 12 can be folded around the first folding line 13 and form a lateral oblique support, the lateral oblique supports are obliquely arranged, and are both positioned on the same side of the middle board 11, so as to support the middle board 11, and further, the upper surface of the middle board 11 is obliquely arranged when displaying a file 200, and the support board 20 can be vertically fixed in the middle of the middle board 11 through the insertion of the first slot 21 and the second slot 16, the inserting edges are contacted with the middle plate, the inclination angles of the two lateral inclined supports are equal, and the technical personnel in the field can adaptively change the sizes of the side plates 12 according to the angle required to be displayed (as shown in fig. 3 and 4), so that the inclination angle of the side plates 12 meets the display requirement when the side plates 12 are folded into the lateral inclined supports, further, the position of the support plate 20 and the main plate 10 is ensured to be fixed, meanwhile, the middle plate 11 is supported through the support plate 20 and the two lateral inclined supports, so that an outer wall of the middle plate 11, which is deviated from the lateral inclined supports, is supported and displayed on the file 200, the main plate 10 is also provided with a limiting element 40, the limiting element 40 is used for fixing the file 200 on an outer wall of the main plate 10, which is deviated from the lateral inclined supports, and the file 200 can be taken down, further, the file 200 is prevented from falling to influence the display in the display process and from being damaged, and meanwhile, the whole can be disassembled and unfolded to form a plate shape, convenient storage and space occupation saving.

Specifically, as shown in fig. 5, the middle plate 11 is a rectangular plate, which conforms to the shape of most of the documents 200 and is convenient for supporting the documents 200, and the two side plates 12 are respectively fixed on the two long sides of the middle plate 11, so that when the documents 200 are displayed on the middle plate 11, one side of the long side is higher than the other side, so that the middle plate 11 is inclined towards the visitors, thereby facilitating the display, the side plates 12 are isosceles trapezoids, one waist of each side plate 12 is fixedly connected with the middle plate 11, the other waist of each side plate 12 is an insertion edge, the insertion edge is provided with a second insertion slot 16, the side plates 12 are further provided with two second folding lines 14 perpendicular to the bottom edges of the side plates 12, the two second folding lines 14 respectively extend from the two ends of the upper bottom of the side plate 12 to the lower bottom of the side plate 12, the side plates 12 can be folded along the two second folding lines 14 in the direction close to the other side plate 12 and supported on one side of the middle plate 11 to form a side inclined support, and the cross-section of side diagonal bracing is right triangle, and when showing file 200, right triangle's a right angle limit contact stand surface, and then makes intermediate lamella 11 slope put to show file 200, the region that lies in between two second fold lines 14 on curb plate 12 is used for contacting the stand surface, and the region between two second fold lines 14 is the plane, and then improves the stability of supporting intermediate lamella 11.

Two third folding lines 15 are formed on the middle plate 11, the third folding lines 15 are parallel to the short edges of the middle plate 11 and are arranged close to the lower bottom of the side plate 12, and therefore the short edge on one side of the middle plate 11 can be conveniently folded towards the direction close to the other short plate;

two third slots 17 are formed in the short edge of the middle plate 11 close to the third folding line 15, so that after the middle plate 11 is folded along the third folding line 15, the openings of the third slots 17 are arranged towards the other short edge;

a fourth slot 18 is formed in the lower bottom of the side plate 12, the fourth slot 18 is far away from the middle plate 11, the middle plate 11 can be folded to the opening of the third slot 17 towards the other short side along two third folding lines 15, one fourth slot 18 corresponds to one third slot 17, the fourth slot 18 is connected with the third slot 17 supported in a side inclining mode in an inserting mode, the middle plate 11 and the side plate 12 are fixed in a folding state, the middle plate 11 is erected and used for supporting the display file 200, and preferably, two ends of the third folding line 15 far away from the third slot 17 extend to the lower bottom end portions of the two side plates 12 respectively.

As shown in fig. 7, the slope exhibition block 100 provided by the present invention further includes a connecting plate 30, the connecting plate 30 is an isosceles trapezoid, and two fourth folding lines 31 are disposed on the connecting plate 30, the fourth folding lines 31 are perpendicular to the bottom of the connecting plate 30, and the two fourth folding lines 31 respectively extend from two ends of the upper bottom of the connecting plate 30 to the bottom of the connecting plate 30, preferably, the shape of the connecting plate 30 is the same as that of the side plate 12, and the distance between the two fourth folding lines 31 and the distance between the two second folding lines 14 can be different, so as to satisfy the supporting requirement of the middle plate 11;

the two waists of the connecting plate 30 are respectively provided with a fifth slot 32, the fifth slots 32 are perpendicular to the waists of the connecting plate 30, the two fifth slots 32 are symmetrically arranged, after the connecting plate 30 is turned over along two fourth folding lines 31, the positions of the two fifth slots 32 correspond to each other, the lower bottom of the connecting plate 30 is also provided with two sixth slots 33, the two sixth slots 33 are respectively arranged close to the two waists of the connecting plate 30, the sixth slots 33 are perpendicular to the lower bottom of the connecting plate 30, the two waists of the connecting plate 30 can be respectively turned over along the two fourth folding lines 31 in the mutually close direction to form a middle inclined support, the interface of the middle inclined support is a right triangle, the middle inclined support is inserted between the two side inclined supports, so that the middle inclined support and the two side inclined supports jointly form a supporting structure of the middle plate 11, and the middle inclined support is far away from one side of the middle plate 11, flush with the side of the two side gussets remote from the central panel 11 to ensure flatness for better presentation of the document 200, the two sides of the central gusset in contact with one side of each side gusset, the area between the two fourth fold lines 31, and the area between two adjacent second fold lines is on the same plane, and the fifth slot 32 and the second slot 16 are inserted in the first slot 21, the sixth slot 33 and the fourth slot 18 are inserted in the third slot 17, and then the short edge of one side of the support plate 20 and the middle plate 11 is matched with the two side plates 12, the whole body is folded and inserted to form the slope exhibition block 100, so that the show, the connected mode of pegging graft is harmless and dismantle conveniently, can still not destroy file 200 under the prerequisite to the show of file 200, and the region between two fourth broken lines 31 is used for contacting the stand surface on the connecting plate 30 to support intermediate plate 11.

The short edge of the middle plate 11 close to the upper bottom of the side plate 12 is further provided with an extension plate 111, two fifth folding lines 19 are arranged between the extension plate 111 and the middle plate 11, the fifth folding lines 19 are parallel to the short edge of the middle plate 11, the extension plate 111 can be folded along the two fifth folding lines 19, the part between the two fifth folding lines 19 is perpendicular to the middle plate 11, the other part is parallel to the middle plate 11, the extension plate 111 is located between the lateral diagonal support and the middle plate 11, grooves are formed in the positions, corresponding to the extension plate 111, on the lateral diagonal support and on the middle diagonal support to accommodate the extension plate 111, when the file 200 is displayed, the short edge of the lower side of the middle plate 11 is supported through the extension plate 111, so that the lower side of the middle plate 11 does not directly contact with the display stand, damage to the file 200 is avoided, and the display effect is improved.

As shown in fig. 8-9, the position limiting element 40 includes a flat band 43 and band-through hole sets, at least two band-through hole sets are disposed on the middle plate 11, each band-through hole set is arranged along the length direction of the short side of the middle plate 11, a document 200 is placed between the flat band 43 and the middle plate 11, and then two sides of the document 200 are fixed by the flat band 43, so as to position the document 200, and on the premise of ensuring the fixing stability, the document 200 is not affected, each band-through hole set includes two band-through parts, two band-through parts in the same band-through hole set are respectively disposed near two short sides of the middle plate 11, and one band-through hole set corresponds to one flat band 43, two ends of the flat band 43 respectively pass through two band-through parts in the same group of the band-through hole sets, and the flat band 43 on the side of the middle plate 11 away from the lateral diagonal support is used for pressing the document 200 onto the middle plate 11, thereby enabling the file 200 to be displayed on a flat plane and ensuring the display effect.

The connecting line between the two threading parts on the same group of threading hole groups is parallel to the long edge of the middle plate 11, and each threading part comprises two threading holes 41, so that the flat belt 43 and the middle plate 11 can be conveniently connected and disassembled, and the side plate 12 after being turned over can be prevented from influencing the connection of the flat belt 43.

The limiting element 40 further comprises a locking module 42, one bandlet 43 corresponds to the locking module 42, two friction holes are formed in the locking module 42, one end of the bandlet 43 can penetrate through the two friction holes from different directions, the bandlet 43 is prevented from coming off from the band-passing hole 41, the bandlet 43 is limited, the bandlet 43 is prevented from coming off from the band-passing hole 41, and fixing and displaying of the file 200 are affected.

The main board 10 and the support board 20 are made of acid-free corrugated boards, accord with cultural relic protection standards, are low in cost, environment-friendly, free of peculiar smell, light in overall weight, simple in manufacturing materials and process, free of professional equipment, free of only needing acid-free corrugated boards, cutting pads, wallpaper knives and ruler drawing tools, and free of noise, smell and dust in the production process.

When the ramp block 100 is installed, the following steps are carried out:

step one (as shown in fig. 10): inserting a first slot 21 of the strip 20 into a second slot 16 of one of the side plates 12;

step two (as shown in fig. 11): folding the side plates 12 in the first step inwards and enabling the support plates 20 to contact the middle plate 11;

step three (as shown in fig. 12): turning the other side plate 12 inwards and splicing with the support plate 20;

step four (as shown in fig. 13): the connecting plate 30 is folded and inserted between the two side plates 12;

step five (as shown in fig. 14): and turning over a short edge on one side of the middle plate 11, and inserting the short edge into the side diagonal braces and the middle diagonal braces.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.

Claims

1. A ramp block, comprising: the supporting plate comprises a main plate and a supporting plate, wherein one side of the supporting plate is provided with at least two first slots, the main plate comprises a middle plate and two side plates, the two side plates are symmetrically fixed on two sides of the middle plate, a first folding line is arranged between each side plate and the middle plate, each side plate is provided with an inserting edge, a second slot is inwards arranged on each side plate from the inserting edge, each side plate can be folded around the first folding line in a direction close to each other to form a lateral inclined support, the supporting plate can be vertically fixed in the middle of the middle plate through the insertion of the first slot and the second slot, the inserting edge is in contact with the middle plate, the inclination angles of the two lateral inclined supports are equal, an outer wall surface of the middle plate, which is far away from the lateral inclined supports, is used for contacting and supporting a file, and a limiting element is further arranged on the main plate, the limiting element is used for fixing the file on an outer wall surface of the middle plate, which is far away from the lateral inclined support, and the file can be taken down.

2. The ramp module of claim 1, wherein: the utility model discloses a set of display stand, including the curb plate, the curb plate is connected with the curb plate, the curb plate is rectangular plate, and two the curb plate is fixed respectively on two long edges of curb plate, just a waist of curb plate with intermediate plate fixed connection, another waist of curb plate does the grafting border, still have on the curb plate two with the base vertically second broken line of curb plate, two the second broken line is respectively certainly two tip at the curb plate upper base extend to on the bottom of curb plate, the curb plate can be followed two the second broken line is close to another the direction of curb plate is turned over and is supported in one side of intermediate plate forms the side bearing diagonal, lie in two on the curb plate regional being used for contacting the stand surface between the second broken line.

3. The ramp module of claim 2, wherein: two third folding lines are arranged on the middle plate, are parallel to the short edge of the middle plate and are arranged close to the lower bottom of the side plate;

4. The ramp module of claim 3, wherein: the connecting plate is isosceles trapezoid, two fourth folding lines are arranged on the connecting plate, the fourth folding lines are perpendicular to the lower bottom of the connecting plate, and the two fourth folding lines respectively extend from two ends of the upper bottom of the connecting plate to the lower bottom of the connecting plate;

5. The ramp module of claim 2, wherein: be close to on the intermediate lamella still be equipped with the extension board on the short edge of curb plate upper base, the extension board with two fifth broken lines have between the intermediate lamella, the fifth broken line is on a parallel with the minor face of intermediate lamella, just two can be followed to the extension board the fifth broken line is turned over and is rolled over, and makes the extension board with the intermediate lamella is parallel, just the extension board is located the side bearing diagonal with between the intermediate lamella.

6. The ramp module of claim 2, wherein: the limiting element comprises a flat belt and a belt penetrating hole group, at least two groups of belt penetrating hole groups are arranged on the middle plate and are respectively arranged along the length direction of the short side of the middle plate, each group of belt penetrating hole groups comprise two belt penetrating parts and are the same, the two belt penetrating parts in each belt penetrating hole group are close to two short sides of the middle plate respectively and are arranged in a one-group mode, each belt penetrating hole group corresponds to one flat belt, two ends of each flat belt penetrate through the two belt penetrating parts which are located in the same group respectively, and the two belt penetrating parts are located on the middle plate and deviate from one side of the lateral inclined support and are used for pressing a file on the middle plate.

7. The ramp module of claim 6, wherein: the connecting line between the two threading parts on the same group of threading hole groups is parallel to the long edge of the middle plate, and each threading part comprises two threading holes.

8. The ramp module of claim 6, wherein: the limiting element further comprises a locking module, one flat belt corresponds to one locking module, two friction holes are formed in the locking module, one end of the flat belt can penetrate through the two friction holes from different directions, and the flat belt is prevented from being separated from the belt penetrating holes.

9. The ramp module of claim 1, wherein: the main board and the support plate are both made of acid-free corrugated boards.