CN111302271A

CN111302271A - Library's bookshelf mechanism

Info

Publication number: CN111302271A
Application number: CN202010063738.8A
Authority: CN
Inventors: 于慧
Original assignee: Chongqing University of Arts and Sciences
Current assignee: Chongqing University of Arts and Sciences
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-06-19

Abstract

The invention provides a library bookshelf mechanism, which comprises a movable trolley (1), a lifting mechanism (2), an access mechanism (3), a control system (4), an identification system (5) and a driving system, wherein the movable trolley is arranged on the rack; the moving trolley (1) consists of universal rollers (11), a bottom plate (12) and a book storage box (13); the lifting mechanism (2) consists of a lifting rod (21) and a rotating platform (22); the storing and taking mechanism (3) consists of a connecting block (31), a bookshelf (32) and a mechanical arm (33); the control system (4) is mounted on the front side above the bottom plate (12); the identification system (5) is mounted at the front end of the bottom plate (12); the drive system comprises a motor and a hydraulic device. The mechanism is fast, efficient and convenient to store and take books, access of a plurality of books is achieved, meanwhile, the mechanism is stable in clamping the books and capable of clamping the books which are densely placed, and the books cannot be damaged easily.

Description

Library's bookshelf mechanism

Technical Field

The invention relates to the technical field of book devices, in particular to a library bookshelf mechanism.

Background

The access of books is an important ring in book management, and basically, the library still relies on traditional manual operation mode in the process of access, and this has not only wasted a large amount of manpowers, financial resources and time, still can inevitable error, the phenomenon that books position is wrong appears. The access of books at high altitude is one of the current difficulties, usually, a librarian accesses the books at high altitude through stairs, and the method has the advantages that firstly, the safety of the librarian cannot be effectively guaranteed, and secondly, if the books are accessed too many, the librarian needs to carry the books in batches, and the time and the labor are wasted; meanwhile, the technology of storing and taking high-altitude books by using a mechanical device exists in the prior art, but most of the existing mechanical devices take down one book, place the book in place and then store and take the next book, so that the loss time is long, the efficiency is low, the mechanical arm is used for grabbing, and if the distance between adjacent books is small, the mechanical arm cannot accurately probe in and grab the books insecure, so that the book taking and storing processes are blocked.

Disclosure of Invention

The invention aims to provide a device for storing and taking books in a library, which can realize book access, has high efficiency and can simultaneously access a plurality of books.

The purpose of the invention is realized by the following technical scheme:

a library bookshelf mechanism which is characterized in that: comprises a movable trolley, a lifting mechanism, a storing and taking mechanism, a control system, an identification system and a driving system;

the moving trolley consists of universal rollers, a bottom plate and a book storage box; the four universal rollers are respectively arranged at the four corners of the bottom plate; the book storage box is fixedly arranged on the rear side above the bottom plate;

the lifting mechanism consists of a lifting rod and a rotating platform; the lifting rod is of a cylindrical structure and is arranged on the front side above the bottom plate, the rotating table is of a cylindrical structure and is sleeved at the lower end of the lifting rod, the lower end face of the rotating table is coplanar with the lower end face of the lifting rod, and the axial line of the rotating table is collinear with the axial line of the lifting rod; a sliding groove is formed in the outer wall of the lifting rod, a sliding block is arranged in the sliding groove, and the side, close to the axis of the lifting rod, of the sliding block is connected with a lifting device in the lifting rod; the side of the sliding block, which is far away from the axis of the lifting rod, is an inclined surface structure a with a small upper side and a large lower side; a plurality of regular quadrilateral bosses are uniformly distributed on the inclined surface structure a, the axial line of each regular quadrilateral boss is parallel to the axial line of the lifting rod, the height of each regular quadrilateral boss is consistent, and the number of the regular quadrilateral bosses is not less than 3;

the storing and taking mechanism consists of a connecting block, a bookshelf and a mechanical arm; the connecting block is connected with the inclined surface structure a, and the connecting surface of the connecting block corresponds to an inclined surface structure b with a large upper side and a small lower side; a plurality of regular quadrilateral grooves are distributed on the inclined surface structure b corresponding to the regular quadrilateral bosses; the bookshelf is in an L-shaped cuboid structure and consists of a bookshelf vertical line segment and a bookshelf transverse line segment respectively; the side, close to the axis of the lifting rod, of the bookshelf vertical line segment is connected with the opposite side of the inclined plane structure b of the connecting block, and a scanner is installed at the end of the bookshelf transverse line segment and used for recognizing book codes and sensing the position of a bookshelf; the mechanical arms are divided into two groups corresponding to the single bookshelf and are respectively arranged on two opposite sides of the bookshelf, and the two sides are not the connecting sides of the bookshelf and the connecting block; the mechanical arm consists of a rotating block, a telescopic rod and an electromagnet thin plate, and the rotating block is connected with the bookshelf and can rotate around the axis of the rotating block on the bookshelf; the side, far away from the axis of the lifting rod, of the rotating block is connected with the telescopic rod, one side, far away from the rotating block, of the telescopic rod is connected with the electromagnetic drop sheet, and the telescopic rod is parallel to the transverse line segment of the bookshelf; the electromagnet sheets at the two sides of the bookshelf are mutually attracted after being electrified; the connecting block and the sliding block are electromagnets and are mutually attracted after being electrified;

the upper end face of the rotating table is provided with a connecting groove relative to the connecting block, the lower end face b of the connecting groove is higher than the lower end face a of the sliding groove, and the height difference between the lower end face a and the lower end face b is equal to the height of the regular quadrilateral boss; the outer wall of the rotating platform is provided with a supporting plate, and the supporting plate is fixedly connected with the rotating platform, is positioned right below the bookshelf and is used for fixing and supporting the bookshelf; the width of the connecting groove is consistent with that of the sliding groove;

the control system is arranged on the front side above the bottom plate and is used for controlling the operation of each mechanism;

the recognition system is arranged at the front end of the bottom plate and is used for feeding back the control system according to ground or bookshelf signals or marks so as to control the moving trolley to move, and the device is moved to a specified position mainly through the recognition mechanism;

the drive system comprises a motor and a hydraulic device.

Furthermore, in order to guarantee the maximum efficiency when storing and taking books and avoid mutual interference of mechanisms when storing and taking books, the number of the sliding grooves is 4-6, and the sliding grooves wind the axis of the lifting rod to be uniformly distributed.

Further, the inclination angle of the inclined surface structure a is 30-40 degrees.

Further, the radius of the rotating platform is 1 mm-3 mm smaller than the shortest distance between the bookshelf and the axis of the lifting rod.

Further, for guaranteeing that the rotating platform and the lifting rod rotate independently, the inner wall of the rotating platform is in clearance fit with the outer wall of the lifting rod.

Further, when the sliding block falls into the bottom of the sliding groove, the bottom surface of the sliding block is coplanar with the lower end face a, the connecting block is clamped into the connecting groove, the bottom surface of the connecting block is coplanar with the lower end face b, and the bottom surface of the bookshelf is coplanar with the top surface of the supporting plate.

Furthermore, the distance between the bottom surface of the supporting plate and the top surface of the bottom plate is 4-5 mm.

Further, for guaranteeing that the sliding block and the connecting block are attracted stably and quickly separated during disconnection, the number of the positive quadrilateral bosses is 3-4.

Furthermore, a self-locking mechanism and a rebound mechanism are arranged on the rotating block.

Further, the motor comprises a rotating motor and a driving motor; the rotating motor is arranged below the bottom plate and respectively controls the rotation of the lifting rod and the rotating platform; the driving motor is installed below the bottom plate and used for controlling the universal idler wheels to rotate.

Further, the hydraulic device is installed on the bottom plate and respectively controls the lifting device to move up and down and the telescopic rod to stretch left and right.

Furthermore, the book storage box is internally provided with a circulating track for arranging the taken books or providing the books needing to be stored.

Further, the book storage box consists of a storage box and a book taking box, the storage box is used for storing books taken down from the bookshelf, and the book taking box is used for storing books to be put back to the bookshelf.

Furthermore, the driving system, the identification system, the moving trolley, the lifting mechanism and the access mechanism are electrically connected with the control system.

The invention has the following technical effects:

(1) the book taking is realized by mutual attraction of the electromagnet sheets, the clamping is more convenient and stable, and the situation that when the distance between adjacent books is small, a traditional mechanical arm cannot be inserted to realize the grabbing is effectively avoided; through the design of the electromagnet sheet, the clamping force is uniformly distributed on the sheet, so that the damage of books or the formation of pits on the surfaces of the books caused by the over-concentrated clamping force during the book storage and taking is avoided; meanwhile, the self-locking mechanism of the rotating block is matched to prevent the book from being compressed and damaged due to overlarge clamping force.

(2) Through the arrangement of the book placing shelves, the lifting rods and the rotating platform, in the book taking process, after one book placing shelf finishes book taking, the taken books are stored in the book storage box through the lifting of the lifting rods and the rotation of the rotating platform; meanwhile, the other book placing shelf finishes the grabbing of the other book under the rotation and lifting of the lifting rod and the driving of the movable trolley, the work of the previous book placing shelf does not need to be finished, the book placing shelves are sequentially and circularly used for storing and taking the books, and the connection is tighter and the efficiency is higher.

(3) Through the matching of the inclined surface structure a, the inclined surface structure b, the regular quadrilateral boss, the regular quadrilateral groove and the electromagnet, the sliding block is ensured to be more compact and firm when being attracted with the connecting block, and the connecting block cannot fall off from the sliding block in the lifting and rotating processes; simultaneously, the difference in height of cooperation spread groove and spout, the separation of more high-efficient, thorough realization sliding block and connecting block ensures that the rotation between revolving stage and the lifter is independent each other, mutual noninterference, guarantees the high efficiency of access books and the job stabilization nature of system, ensures that the book is deposited and gets the continuity of book process.

(4) The mechanism is simple to operate, can quickly identify books and complete the grabbing or storing of the books, and meanwhile, the mechanism can circularly complete the access of a plurality of books, the access is more compact in connection, high in continuity and high in efficiency, and the access of the books can be continuously and uninterruptedly realized.

Drawings

Fig. 1 is a schematic structural diagram of a book storing and fetching device in an embodiment of the invention.

Fig. 2 is a top view of a book storing and taking device according to an embodiment of the present invention.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a partially enlarged view of fig. 2 in the direction B.

Fig. 5 is a partial enlarged view of fig. 3 taken along line C.

Fig. 6 is a partially enlarged view of fig. 3 taken along line D.

Fig. 7 is a partial sectional view of the lifter bar taken along line E-E of fig. 3.

Fig. 8 is a schematic structural view of a slider according to an embodiment of the present invention, in which fig. 8 (a) is a sectional view and fig. 8 (b) is a top view.

Fig. 9 is a schematic structural view of a connecting block according to an embodiment of the present invention, in which fig. 9 (a) is a sectional view and fig. 9 (b) is a plan view.

Wherein, 1, moving the trolley; 11. a universal roller; 12. a base plate; 13. a book storage box; 131. a storage box; 132. taking a book box; 2. a lifting mechanism; 21. a lifting rod; 211. a lifting device; 212. a chute; 213. a slider; 2131. an inclined plane structure a; 2132. a positive quadrilateral boss; 22. a rotating table; 221. connecting grooves; 2211. a lower end surface a; 2212. a lower end face b; 222. a support plate; 3. an access mechanism; 31. connecting blocks; 311. an inclined plane structure b; 312. a regular quadrilateral groove; 32. placing a bookshelf; 321. placing the vertical line segment of the bookshelf; 322. placing a transverse line segment of the bookshelf; 3221. a code scanner; 33. a mechanical arm; 331. rotating the block; 332. a telescopic rod; 333. an electromagnet sheet; 4. a control system; 5. a system is identified.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-9, a library bookshelf mechanism, characterized in that: comprises a movable trolley 1, a lifting mechanism 2, a storing and taking mechanism 3, a control system 4, an identification system 5 and a driving system;

the movable trolley 1 consists of universal rollers 11, a bottom plate 12 and a book storage box 13; four universal rollers 11 are respectively arranged at four corners of the bottom plate 12; the book storage box 13 is fixedly arranged on the rear side above the bottom plate 12; the book storage box 13 is provided with a circulating track inside for arranging the removed books or providing the books to be stored. The book storage box 13 is composed of a storage box 131 and a book taking box 132, the storage box 131 is used for storing books taken down from the bookshelf, and the book taking box 132 is used for storing books to be put back to the bookshelf.

The lifting mechanism 2 consists of a lifting rod 21 and a rotating platform 22; the lifting rod 21 is of a cylindrical structure and is arranged on the front side above the bottom plate 12, the rotating table 22 is of a cylindrical structure and is sleeved at the lower end of the lifting rod 21, the lower end face of the rotating table 22 is coplanar with the lower end face of the lifting rod 21, and the axial lead of the rotating table 22 is collinear with the axial lead of the lifting rod 21; the outer wall of the lifting rod 21 is provided with sliding grooves 212, in order to ensure the maximum efficiency in book storage and book taking and avoid mutual interference of mechanisms in book storage and book taking, the number of the sliding grooves 212 is 4-6, preferably 4, and the sliding grooves 212 are uniformly distributed around the axis of the lifting rod 21. A sliding block 213 is arranged in the sliding groove 212, and the sliding block 213 is connected with the lifting device 211 in the lifting rod 21 close to the axial side of the lifting rod 21; the slide block 213 is an inclined surface structure a 2131 with a small upper side and a large lower side away from the axial line side of the lifting rod 21; the inclination angle of the inclined surface structure a 2131 is 30-40 degrees, preferably 35 degrees. A plurality of positive quadrilateral bosses 2132 are uniformly distributed on the inclined surface structure a 2131, the axial line of each positive quadrilateral boss 2132 is parallel to the axial line of the lifting rod 21, the height of each positive quadrilateral boss 2132 is consistent, and the number of the positive quadrilateral bosses 2132 is 3-4, preferably 4.

The storing and taking mechanism 3 consists of a connecting block 31, a bookshelf 32 and a mechanical arm 33; the connecting block 31 is connected with the inclined surface structure a 2131, and the connecting surface of the connecting block corresponds to the inclined surface structure b 311 with a large upper side and a small lower side; a plurality of regular quadrilateral grooves 312 are distributed on the inclined surface structure b 311 corresponding to the regular quadrilateral bosses 2132; the bookshelf 32 is an L-shaped cuboid structure and is composed of a bookshelf vertical line segment 321 and a bookshelf transverse line segment 322 respectively; the vertical line segment 321 of the bookshelf is connected with the opposite side of the inclined plane structure b 311 of the connecting block 31 near the axial side of the lifting rod 21, and a scanner 3221 is installed at the end of the horizontal line segment 322 of the bookshelf for recognizing book codes and sensing the position of the bookshelf. The mechanical arms 33 are two groups corresponding to the single bookshelf 32 and are respectively arranged on two opposite sides of the bookshelf 32, and the two sides are not the connecting sides of the bookshelf 32 and the connecting block 31; the mechanical arm 33 is composed of a rotating block 331, a telescopic rod 332 and an electromagnet thin plate 333, wherein the rotating block 331 is connected with the bookshelf 32 and can rotate around the axis of the rotating block 331 on the bookshelf 32; the side of the rotating block 331, which is far away from the axis of the lifting rod 31, is connected with a telescopic rod 332, one side of the telescopic rod 332, which is far away from the rotating block 331, is connected with an electromagnetic falling thin plate 333, and the telescopic rod 332 is parallel to the bookshelf transverse line section 322; the electromagnet sheets 333 at the two sides of the bookshelf 32 are mutually attracted after being electrified; the connecting block 31 and the sliding block 213 are electromagnets and attract each other after being electrified; the rotating block 331 is provided with a self-locking mechanism and a rebound mechanism.

The radius of the rotating platform 22 is 1mm to 3mm, preferably 2mm smaller than the shortest distance between the bookshelf 32 and the axial lead of the lifting rod 21; in order to ensure that the rotating platform and the lifting rod rotate independently, the inner wall of the rotating platform 22 is in clearance fit with the outer wall of the lifting rod 21, and the clearance is consistent with the length of the inclined surface structure a 2131 exceeding the outer wall of the lifting rod 21. The upper end face of the rotating platform 22 is provided with a connecting groove 221 relative to the connecting block 31, the lower end face b 2212 of the connecting groove 221 is higher than the lower end face a 2211 of the sliding groove 212, and the height difference between the lower end face a 2211 and the lower end face b 2212 is equal to the height of the square boss 2132; the outer wall of the rotating platform 22 is provided with a support plate 222, and the support plate 221 is fixedly connected with the rotating platform 22, is positioned right below the bookshelf 32 and is used for fixing and supporting the bookshelf 32; the width of the connecting groove 221 is consistent with that of the sliding groove 212; the bottom surface of the support plate 222 is spaced from the top surface of the base plate 12 by 4mm to 5mm, preferably 4.5 mm.

When the sliding block 213 drops into the bottom of the sliding slot 212, the bottom surface of the sliding block 213 is coplanar with the lower end surface a 2211, the connecting block 31 is inserted into the connecting slot 221, the bottom surface of the connecting block 31 is coplanar with the lower end surface b 2212, and the bottom surface of the bookshelf 32 is coplanar with the top surface of the supporting plate 222.

The control system 4 is arranged on the front side above the bottom plate 12 and is used for controlling the operation of each mechanism;

the recognition system 5 is arranged at the front end of the bottom plate 12 and is used for feeding back the control system 4 according to ground or bookshelf signals or marks so as to control the moving trolley 1 to move, and the device is moved to a specified position mainly through a recognition mechanism;

the drive system includes an electric motor and hydraulics (not shown); the motor comprises a rotating motor and a driving motor; the rotating motor is arranged below the bottom plate 12 and respectively controls the rotation of the lifting rod 21 and the rotating platform 22; the driving motor is arranged below the bottom plate 12 and used for controlling the universal idler wheel 11 to rotate. The hydraulic device is installed on the bottom plate 12 and respectively controls the lifting device 211 to move up and down and the telescopic rod 332 to extend and retract left and right; the elevating device 211 individually controls each of the sliding blocks 213 to be elevated.

The driving system, the recognition system 5, the movable trolley 1, the lifting mechanism 2, the access mechanism 3 and the control system 4 are electrically connected.

The working principle is as follows:

when this mechanism borrows and fetches a book:

firstly, after books needing to be borrowed are determined, the mechanism moves to the front of a corresponding bookshelf through moving the lower vehicle 1 and the recognition system 5, and the control system 4 energizes one sliding block 211 and the corresponding connecting block 31 to enable the sliding block to be in a suction state; the lifting device 211 controls a sliding block 213 to ascend, and then controls the bookshelf 32 to ascend through the connecting block 31, the barcode scanner 3221 scans the barcode under the book for recognition, and the control system 4 determines whether the book is to be fetched.

Secondly, when the book is determined to be taken, the lifting device 211 stops running; the telescopic link 332 is extended, the electromagnet thin plate 333 is controlled to be inserted into two sides of a book to be taken, when the book reaches a specified position (a limit sensor can be arranged according to the length of the book or an induction sensor is arranged on the electromagnet thin plate 333 to determine the position of the book to be taken), the electromagnet thin plate 333 is controlled to be electrified by the control system 4, the electromagnet thin plate 333 is controlled to be attracted, the rotary block 331 is correspondingly rotated along with the attraction of the electromagnet thin plate 333, when the rotary block 331 reaches the limit position (the limit sensor can be arranged on the rotary block according to the general thickness of the book), the self-locking mechanism of the rotary block 331 is self-locked, the telescopic link 332 is controlled by the control system 4 to be shortened to the initial position, the.

Then, the control system 4 turns off the power supply to the electromagnet sheet 333, and the lifting device 211 controls the slide block 213 to descend; when the connecting block 31 is inserted into the corresponding connecting groove 221, the control system 4 disconnects the power to the connecting block 31 and the sliding block 213, and at this time, the sliding block falls into the bottom of the sliding groove 212, the connecting block 31 is separated from the sliding block 213, and the bookshelf 32 is fixed on the supporting plate 222.

Thirdly, the control system 4 controls the rotation of the rotation platform 22 (whether the bottom surface of the bookshelf 32 is coplanar with the top surface of the support plate 222 is identified by the sensor on the support plate 222, and further whether the bookshelf 32 is fixed on the support plate 222 is identified, and if the bookshelf 32 is on the support plate 222, the rotation platform 22 rotates), and whether the bookshelf 32 rotates to the side of the book storage box 13 is identified by the scanner 3221; if the book to be taken arrives, the rotating table 22 stops rotating, the control system 4 controls the telescopic rod 332 to extend, the telescopic rod 332 places the book to be taken into the area of the book storage box 13, the self-locking of the rotating block 331 is released, the rebounding mechanism rebounds to the initial position, and the book to be taken is placed into the book storage box 13; the book storage box 13 divides the books to be taken into the storage boxes 131 through the circulation rail.

The control system 4 powers off one set of the connecting blocks 31 and the sliding blocks 213, simultaneously powers on the other set of the connecting blocks 31 and the sliding blocks 213, controls the attraction thereof, controls the lifting device 211 to ascend and the lifting rod 21 to rotate, and completes borrowing of other books in the control system sequentially and circularly.

When this mechanism is returned the book and is deposited, similar when borrowing and fetching the book:

firstly, the book storage box 13 extracts the book to be returned through the circulating track, the code scanner 3221 identifies the book to be returned in the book storage box 13, the moving trolley 1 moves to a specific bookshelf position, then the telescopic rod 332 extends, the electromagnet sheet 333 clamps the book to be returned, the rotating block 331 is self-locked, the telescopic rod 332 is shortened, and the book to be returned is placed on the book placing shelf 32.

Then, the rotating platform 22 rotates (whether the sliding block 213 and the connecting block 31 are in the same group is identified by the inductive sensor of the sliding block 213 and the connecting block 31, and the position of the rotating platform 22 is controlled), so that the sliding block 213 and the connecting block 31 are in a state of being in a group again, the control system 4 controls the sliding block 213 to be attracted to the connecting block 31, and the sliding block 213 ascends to drive the bookshelf 32 to ascend.

Then, the scanner 3221 recognizes the shelf position of the book to be returned, controls the lifting device 211 to stop, extends the telescopic rod 332, puts the book to be returned into the shelf, releases the self-locking of the rotation block 331, rebounds the rebounding mechanism to the initial position, and shortens the telescopic rod 332 to the initial position, thereby completing the return of the book.

The control system 4 energizes the set of connecting blocks 31 and the sliding blocks 213 to complete the capture of another book to be returned and the return of the next book.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

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

1. A library bookshelf mechanism which is characterized in that: comprises a movable trolley (1), a lifting mechanism (2), a storing and taking mechanism (3), a control system (4), an identification system (5) and a driving system;

the moving trolley (1) consists of universal rollers (11), a bottom plate (12) and a book storage box (13); the number of the universal rollers (11) is four, and the four universal rollers are respectively arranged at four corners of the bottom plate (12); the book storage box (13) is fixedly arranged on the rear side above the bottom plate (12);

the lifting mechanism (2) consists of a lifting rod (21) and a rotating platform (22); the lifting rod (21) is of a cylindrical structure and is arranged on the front side above the bottom plate (12), the rotating table (22) is of a cylindrical structure and is sleeved at the lower end of the lifting rod (21), the lower end face of the rotating table (22) is coplanar with the lower end face of the lifting rod (21), and the axial lead of the rotating table (22) is collinear with the axial lead of the lifting rod (21); a sliding groove (212) is formed in the outer wall of the lifting rod (21), a sliding block (213) is arranged in the sliding groove (212), and the sliding block (213) is connected with a lifting device (211) in the lifting rod (21) close to the axial line side of the lifting rod (21); the side of the sliding block (213) far away from the axis of the lifting rod (21) is provided with an inclined surface structure a (2131) with a small upper side and a large lower side; a plurality of regular quadrilateral bosses (2132) are uniformly distributed on the inclined surface structure a (2131), the axial line of each regular quadrilateral boss (2132) is parallel to the axial line of the lifting rod (21), the height of each regular quadrilateral boss (2132) is consistent, and the number of the regular quadrilateral bosses (2132) is not less than 3;

the storing and taking mechanism (3) consists of a connecting block (31), a bookshelf (32) and a mechanical arm (33); the connecting block (31) is connected with the inclined surface structure a (2131), and the connecting surface of the connecting block corresponds to an inclined surface structure b (311) with a large upper side and a small lower side; a plurality of regular quadrilateral grooves (312) are distributed on the inclined surface structure b (311) corresponding to the regular quadrilateral bosses (2132); the bookshelf (32) is in an L-shaped cuboid structure and respectively consists of a bookshelf vertical line segment (321) and a bookshelf transverse line segment (322); the side of the vertical line segment (321) of the bookshelf close to the axial line of the lifting rod (21) is connected with the opposite side of the inclined surface structure b (311) of the connecting block (31), and a scanner (3221) is arranged at the end of the transverse line segment (322) of the bookshelf; the mechanical arms (33) are divided into two groups corresponding to the single bookshelf (32), and are respectively arranged on two opposite sides of the bookshelf (32), and the two sides are not the connecting sides of the bookshelf (32) and the connecting block (31); the mechanical arm (33) consists of a rotating block (331), a telescopic rod (332) and an electromagnet thin plate (333), and the rotating block (331) is connected with the bookshelf (32) and can rotate around the axis of the rotating block on the bookshelf (32); the side, far away from the axis of the lifting rod (21), of the rotating block (331) is connected with the telescopic rod (332), one side, far away from the rotating block (331), of the telescopic rod (332) is connected with the electromagnetic falling sheet (333), and the telescopic rod (332) is parallel to the bookshelf transverse line segment (322); the electromagnet sheets (333) on the two sides of the bookshelf (32) are mutually attracted after being electrified; the connecting block (31) and the sliding block (213) are electromagnets;

the upper end face of the rotating platform (22) is provided with a connecting groove (221) relative to the connecting block (31), the lower end face b (2212) of the connecting groove (221) is higher than the lower end face a (2211) of the sliding groove (212), and the height difference between the lower end face a (2211) and the lower end face b (2212) is equal to the height of the square boss (2132); a support plate (222) is arranged on the outer wall of the rotating platform (22), and the support plate (222) is fixedly connected with the rotating platform (22) and is positioned right below the bookshelf (32); the width of the connecting groove (221) is consistent with that of the sliding groove (212);

the control system (4) is mounted on the front side above the bottom plate (12);

the identification system (5) is mounted at the front end of the bottom plate (12);

the driving system comprises a motor and a hydraulic device;

the inner wall of the rotating platform (22) and the outer wall of the lifting rod (21) can be in clearance fit;

the distance between the bottom surface of the supporting plate (222) and the top surface of the bottom plate (12) is 4-5 mm.

2. A library bookshelf mechanism according to claim 1 further comprising: when the sliding block (213) falls into the bottom of the sliding groove (212), the bottom surface of the sliding block (213) is coplanar with the lower end surface a (2211), the connecting block (31) is clamped into the connecting groove (221), the bottom surface of the connecting block (31) is coplanar with the lower end surface b (2212), and the bottom surface of the bookshelf (32) is coplanar with the top surface of the supporting plate (222).

3. A library bookshelf mechanism according to claim 2 further comprising: and a self-locking mechanism and a rebounding mechanism are arranged on the rotating block (331).

4. A library bookshelf mechanism according to claim 3 further comprising: the motor comprises a rotating motor and a driving motor; the rotating motor and the driving motor are both arranged below the bottom plate (12).

5. A library bookshelf mechanism according to claim 4 wherein: the hydraulic device is mounted on the base plate (12).

6. A library bookshelf mechanism according to claim 5 further comprising: and a circulating track is arranged in the book storage box (13).

7. A library bookshelf mechanism according to claim 6 further comprising: the book storage box (13) is composed of a storage box (131) and a book taking box (132).

8. A library bookshelf mechanism according to claim 7 wherein: the driving system, the recognition system (5), the moving trolley (1), the lifting mechanism (2) and the access mechanism (3) are electrically connected with the control system (4).