CN116172343B - Movable multifunctional bookcase easy to look up - Google Patents

Abstract

The invention relates to the technical field of furniture, in particular to a movable multifunctional bookcase easy to review. The invention provides a movable multifunctional bookcase which is convenient for taking upper-layer articles and is easy to look up. The utility model provides a portable multi-functional book case of easily consulting, includes the main framework and places the board, and the board has been placed to the even interval of main framework inboard, still including moving mechanism and decline mechanism, main framework upper portion is equipped with the moving mechanism that is used for depositing books, and decline mechanism sets up on main framework upper portion, and decline mechanism is connected with moving mechanism, and decline mechanism drives moving mechanism downwardly moving and reduces the height. The frame is placed in the forward movement, and rethread motor drives first pivot and spur gear rotation, and the spur gear drives the rack and places the frame and move down to reduce the height of placing the frame, be convenient for get books in placing the frame memory.

Description

Movable multifunctional bookcase easy to look up

Technical Field

The invention relates to the technical field of furniture, in particular to a movable multifunctional bookcase easy to review.

Background

The bookcase is a cabinet specially used for storing books, newspapers, magazines and other books, the variety of the bookcase is more and more increased along with the improvement of the living standard of people, a plurality of large-scale bookcases are applied to study decoration, but the bookcase is inconvenient to use due to the increase of the height of the bookcase, when the bookcase is used for storing articles, the books on the upper layer are inconvenient to take and place, especially for people with lower height, people can only access the books by stepping on the stool, and potential safety hazards are brought while the bookcase is inconvenient.

How to design a portable multifunctional bookcase that easily consults of upper strata article of being convenient for take is the technical problem that this patent needs to solve.

Disclosure of Invention

In order to overcome the defects that the existing large bookcase is inconvenient for taking and placing upper-layer articles, especially for people with lower heights, the large bookcase can be taken and stored only by stepping on a stool, and potential safety hazards are brought when the large bookcase is inconvenient, the technical problem is that: provides a movable and easy-to-look-up multifunctional bookcase which is convenient for taking upper-layer articles.

The technical proposal is as follows: the utility model provides a portable multi-functional book case of easily consulting, includes the main framework and places the board, and the board has been placed to the even interval of main framework inboard, still including moving mechanism and decline mechanism, main framework upper portion is equipped with the moving mechanism that is used for depositing books, and decline mechanism sets up on main framework upper portion, and decline mechanism is connected with moving mechanism, and decline mechanism drives moving mechanism downwardly moving and reduces the height.

As the preference, moving mechanism is including first fixed column, the lead screw, first slide bar, the sliding sleeve, the second slide bar, the thread bush is with placing the frame, main frame body front portion upside is connected with first fixed column, the rotation is connected with the lead screw on the first fixed column of left side, be connected with the second slide bar on the first fixed column on right side, the thread bush is connected with on the lead screw, sliding connection has the sliding sleeve on the second slide bar, all sliding connection has two first slide bars on thread bush and the sliding sleeve, first slide bar all is connected with main frame body upper portion slidingtype, be connected with between the first slide bar bottom and place the frame, positive and negative rotation lead screw, the lead screw passes through the thread bush and drives to place the frame and reciprocate.

Preferably, the descending mechanism comprises a driving assembly, a spur gear and a rack, the driving assembly is arranged on the upper portion of the main frame body, the spur gear is connected to the driving assembly, the rack is connected to the middle of the top of the placement frame, the placement frame drives the rack to move forwards and mesh with the spur gear, the driving assembly drives the spur gear to rotate forwards and backwards, and the spur gear drives the rack to move up and down.

Preferably, the driving assembly comprises a motor, a first rotating shaft and a second fixed column, the motor is installed at the rear side of the upper part of the main frame body, the second fixed column is connected in the middle of the upper part of the main frame body, the first rotating shaft is rotatably connected to the second fixed column, the rear end of the first rotating shaft is connected with an output shaft of the motor through a coupling, the first rotating shaft is connected with a spur gear, and the motor drives the first rotating shaft to drive the spur gear to rotate positively and negatively.

The automatic frame-placing device comprises a main frame body, a first rotating shaft, a second rotating shaft, a flat belt, a first linear spring, a clamping block and a third fixed column, wherein the first rotating shaft is connected with the opposite gear at the rear part, the third fixed column is connected with the rear side of the upper part of the main frame body, the opposite gear is rotatably connected with the front side of the third fixed column, the opposite gears are meshed with each other, the second rotating shaft is rotatably connected with the rear side of the upper part of the main frame body, the rear part of the second rotating shaft and the rear part of a screw rod are wound with the flat belt through a driving wheel, the front part of the second rotating shaft is slidably connected with the clamping block, the first linear spring is connected between the bottom of the clamping block and the second rotating shaft, the clamping block is clamped on the opposite gear at the left side, the first rotating shaft drives the second rotating shaft to rotate positively and negatively through the flat belt, and the screw rod is driven to rotate positively and negatively through the flat belt, and the screw rod drives the placing frame to move automatically.

Preferably, the multifunctional bookcase is characterized by further comprising a balance mechanism for keeping the balance of the movable and easy-to-review multifunctional bookcase, wherein the balance mechanism comprises a third rotating shaft, third sliding rods and a weighting block, the left side and the right side of the lower part of the main frame body are respectively and rotatably connected with the third rotating shaft, the third rotating shafts are respectively and rotatably connected with third sliding rods, weighting blocks are respectively and slidably connected with the third sliding rods, the third rotating shafts rotate positively and negatively, and the weighting block moves back and forth along the third sliding rods, so that the position of the weighting blocks is adjusted to keep the balance of the movable and easy-to-review multifunctional bookcase.

Preferably, the device also comprises an adjusting mechanism for automatically and positively rotating the third rotating shaft to adjust the position of the weighting block, the adjusting mechanism comprises a push plate, a push rod, a fourth slide rod, a second linear spring, a swing rod and a torsion spring, the push plate is connected with the left side and the right side of the placement frame, the fourth slide rod is connected with the left side and the right side of the upper part of the main frame body, the push rod is connected with the fourth slide rod in a sliding manner, the push plate moves forwards to be contacted with the push rod, the second linear spring is connected between the push rod on the left side and the fourth slide rod on the left side, the second linear spring is connected between the push rod on the right side and the fourth slide rod on the right side, the second linear spring is sleeved on the fourth slide bar, the third rotating shaft is connected with swing rods, torsion springs are connected between the upper parts of the swing rods and the main frame body, the torsion springs are sleeved on the third rotating shaft, the left swing rods are connected with the left push rods in a sliding mode, the right swing rods are connected with the right push rods in a sliding mode, the placing frame drives the push rods to move forwards through the push plates, the push rods drive the third rotating shaft to automatically rotate through the swing rods, the placing frame drives the push plates to move backwards, the push rods are driven to move backwards under the action of the second linear springs, the push rods drive the third rotating shaft to automatically rotate reversely through the swing rods, and the third rotating shaft automatically rotates forwards and backwards to adjust the positions of the weighting blocks.

Preferably, the book sorting device further comprises a sorting mechanism, wherein the sorting mechanism comprises a sorting rod and a sliding rail, the front side of the placing plate is provided with sliding grooves, the rear portion of the main frame body is uniformly connected with the sliding rail, the sliding rail is connected with the sorting rod which is used for conveniently searching books in a sliding mode, and the upper end of the sorting rod slides in the sliding grooves.

The invention has the advantages that: the placing frame is moved forwards, the motor drives the first rotating shaft and the spur gear to rotate, and the spur gear drives the rack and the placing frame to move downwards, so that the height of the placing frame is reduced, and books can be conveniently stored in the placing frame; the first rotating shaft drives the second rotating shaft to rotate positively and negatively through the opposite gear, the second rotating shaft drives the screw rod to rotate positively and negatively through the flat belt, and the screw rod drives the placing frame to automatically move forwards and backwards through the threaded sleeve; the third rotating shaft is rotated positively and negatively, the weighting block moves forwards and backwards along the third sliding rod, the position of the weighting block is adjusted to keep balance of the movable and easy-to-review multifunctional bookcase, and the bookcase is prevented from toppling; the placing frame drives the push rod to move forwards through the push plate, the push rod drives the third rotating shaft to automatically rotate through the swing rod, the placing frame drives the push plate to move backwards, the push rod is driven to move backwards under the action of the second linear spring, the push rod drives the third rotating shaft to automatically rotate reversely through the swing rod, and the third rotating shaft automatically rotates forwards and reversely to adjust the position of the weighting block; the books are classified by the classifying rod, so that people can find the books conveniently.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the internal structure of the present invention.

Fig. 3 is a schematic perspective view of a first embodiment of a moving mechanism according to the present invention.

Fig. 4 is a schematic view of a second perspective structure of the moving mechanism of the present invention.

Fig. 5 is a schematic perspective view of the lowering mechanism of the present invention.

Fig. 6 is a schematic perspective view of a disengaging mechanism according to the present invention.

Fig. 7 is an enlarged perspective view of the present invention at a.

Fig. 8 is a schematic perspective view of a part of the disengaging mechanism according to the present invention.

Fig. 9 is a schematic perspective view of a balancing mechanism according to the present invention.

Fig. 10 is a schematic perspective view of an adjusting mechanism according to the present invention.

Fig. 11 is a schematic perspective view of a part of an adjusting mechanism of the present invention.

Fig. 12 is a schematic perspective view of a sorting mechanism according to the present invention.

Fig. 13 is an enlarged perspective view of the present invention at B.

Reference numerals illustrate: the device comprises a 1-main frame body, a 2-placing plate, a 3-moving mechanism, a 31-first fixed column, a 32-screw, a 33-first sliding rod, a 34-sliding sleeve, a 35-second sliding rod, a 36-threaded sleeve, a 37-placing frame, a 4-descending mechanism, a 41-motor, a 42-first rotating shaft, a 43-spur gear, a 44-rack, a 45-second fixed column, a 5-disengaging mechanism, a 51-counter gear, a 52-second rotating shaft, a 53-flat belt, a 54-first linear spring, a 55-clamping block, a 56-third fixed column, a 6-balancing mechanism, a 61-third rotating shaft, a 62-third sliding rod, a 63-weighting block, a 7-adjusting mechanism, a 71-push plate, a 72-push rod, a 73-fourth sliding rod, a 74-second linear spring, a 75-swing rod, a 76-torsion spring, an 8-sorting mechanism, a 81-sliding groove, a 82-sorting rod and a 83-sliding rail.

Detailed Description

The following description is of the preferred embodiments of the invention, and is not intended to limit the scope of the invention.

Example 1

The utility model provides a portable multifunctional bookcase that easily consults, refer to fig. 1-7, including main framework 1, place board 2, mobile mechanism 3 and descent mechanism 4, the inboard even interval connection of main framework 1 has to place board 2, and main framework 1 upper portion is equipped with mobile mechanism 3, and mobile mechanism 3 is used for depositing books, and descent mechanism 4 sets up in main framework 1 upper portion, and descent mechanism 4 is connected with mobile mechanism 3, and descent mechanism 4 is used for reducing the height of mobile mechanism 3 and deposits books. Referring to fig. 3 to 4, the moving mechanism 3 comprises a first fixing column 31, a screw rod 32, a first slide rod 33, a sliding sleeve 34, a second slide rod 35, a threaded sleeve 36 and a placing frame 37, wherein two first fixing columns 31 are fixedly connected to the upper side of the front part of the main frame 1 through bolts, the first fixing columns 31 are symmetrically arranged left and right, the screw rod 32 is rotationally connected to the first fixing columns 31 on the left, the second slide rod 35 is connected to the first fixing columns 31 on the right, the threaded sleeve 36 is connected to the screw rod 32 in a threaded manner, the sliding sleeve 34 is connected to the second slide rod 35 in a sliding manner, the two first slide rods 33 are connected to the threaded sleeve 36 and the sliding sleeve 34 in a sliding manner, the first slide bars 33 are all connected with the upper part of the main frame body 1 in a sliding way, and a placing frame 37 is welded between the bottoms of the four first slide bars 33. Referring to fig. 5, the descent mechanism 4 includes a driving assembly, a spur gear 43 and a rack 44, wherein the driving assembly for realizing the forward and backward movement of the placement frame 37 is arranged at the upper part of the main frame 1, the spur gear 43 is connected to the driving assembly through a key, the rack 44 is fixedly connected to the middle of the top of the placement frame 37 through a bolt, and the rack 44 is meshed with the spur gear 43 when moving forward. The driving assembly comprises a motor 41, a first rotating shaft 42 and a second fixed column 45, the motor 41 is mounted on the rear side of the upper portion of the main frame body 1, the second fixed column 45 is welded in the middle of the upper portion of the main frame body 1, the first rotating shaft 42 is rotatably connected to the second fixed column 45, the rear end of the first rotating shaft 42 is connected with an output shaft of the motor 41 through a coupling, and the first rotating shaft 42 is connected with a spur gear 43. When in use, people store books on the placing plate 2, meanwhile, people manually rotate the screw rod 32, the screw rod 32 drives the threaded sleeve 36 to move forwards, so as to drive the left two first slide bars 33 to move forwards, the left two first slide bars 33 drive the placing frame 37 to move forwards, so as to drive the sliding sleeve 34 and the rack 44 to move forwards, the sliding sleeve 34 drives the right two first slide bars 33 to move forwards, the rack 44 is meshed with the spur gear 43, the motor 41 is started, the output shaft of the motor 41 rotates to drive the first rotating shaft 42 to rotate, the first rotating shaft 42 drives the spur gear 43 to rotate, so as to drive the rack 44 to move downwards, the rack 44 drives the placing frame 37 and the first slide bars 33 to move downwards, Thereby reduce the height of placing frame 37, turn off motor 41 again, thereby make things convenient for people to deposit books in placing frame 37, after books access, start motor 41, control motor 41's output shaft reversal drives first pivot 42 reversal, first pivot 42 drives straight-line gear 43 reversal, and then drive rack 44 and upwards move, rack 44 drives placing frame 37 and first slide bar 33 upwards move, turn off motor 41 again, then manual reversal lead screw 32, lead screw 32 drives thread bush 36 and upwards moves, and then drive first slide bar 33, placing frame 37, sliding sleeve 34 and rack 44 and upwards move the packing up.

Example 2

On the basis of embodiment 1, referring to fig. 1,2, 6, 7 and 8, the device further comprises a disengaging mechanism 5, wherein the disengaging mechanism 5 comprises a counter gear 51, a second rotating shaft 52, a flat belt 53, a first linear spring 54, a clamping block 55 and a third fixed column 56, the rear part of the first rotating shaft 42 is connected with the counter gear 51 through a key, the third fixed column 56 is welded on the rear side of the upper part of the main frame body 1, the front side of the third fixed column 56 is rotatably connected with the counter gear 51, the two counter gears 51 are meshed with each other, the rear side of the upper part of the main frame body 1 is rotatably connected with a second rotating shaft 52, the rear part of the second rotating shaft 52 and the rear part of the screw rod 32 are wound with the flat belt 53 through a driving wheel, the front part of the second rotating shaft 52 is slidably connected with the clamping block 55, the first linear spring 54 is connected between the bottom of the clamping block 55 and the second rotating shaft 52, and the clamping block 55 is clamped on the counter gear 51 on the left side. When the first rotating shaft 42 rotates, the spur gear 43 and the right opposite gear 51 are driven to rotate, the right opposite gear 51 drives the left opposite gear 51 to rotate, the second rotating shaft 52 and the first linear spring 54 are driven to rotate by the clamping block 55, the second rotating shaft 52 drives the screw rod 32 to rotate by the driving wheel and the flat belt 53, the screw rod 32 automatically rotates to drive the threaded sleeve 36 to move forwards, the threaded sleeve 36 drives the rack 44 and the placing frame 37 to move forwards, after the threaded sleeve 36 moves forwards to the limit, the threaded sleeve 36 clamps the screw rod 32, the driving wheel, the flat belt 53 and the second rotating shaft 52 stop rotating, the right opposite gear 51 drives the left opposite gear 51 to rotate, the left opposite gear 51 continuously extrudes the clamping block 55, the first linear spring 54 repeatedly compresses and resets, the left opposite gear 51 idles and does not drive the second rotating shaft 52 to rotate, simultaneously, the rack 44 moves forwards to be meshed with the straight gear 43, the straight gear 43 rotates to drive the rack 44 to move downwards, so that the placing frame 37 moves downwards to reduce the height, the rear side of the placing frame 37 is blocked by the main frame body 1, when the first rotating shaft 42 rotates reversely, the straight gear 43 and the right opposite gear 51 are further driven to rotate reversely, the right opposite gear 51 drives the left opposite gear 51 to rotate reversely, the left opposite gear 51 rotates reversely and continuously extrudes the clamping block 55 due to the fact that the rear side of the placing frame 37 is blocked by the main frame body 1 and cannot move backwards, the first linear spring 54 repeatedly compresses and resets, when the straight gear 43 rotates reversely to drive the rack 44 to move upwards and reset, the right opposite gear 51 rotates reversely to drive the left opposite gear 51 to rotate reversely, the clamping block 55 is clamped on the left opposite gear 51 under the reset action of the first linear spring 54, the left opposite gear 51 drives the second rotating shaft 52 and the first linear spring 54 to rotate reversely through the clamping block 55, the second rotating shaft 52 drives the screw rod 32 to rotate reversely through the driving wheel and the flat belt 53, and the screw rod 32 automatically rotates reversely to drive the threaded sleeve 36 to move backwards to reset.

Referring to fig. 1, 2 and 9, the multifunctional bookcase further comprises a balancing mechanism 6, the balancing mechanism 6 comprises a third rotating shaft 61, third sliding rods 62 and weighting blocks 63, the left side and the right side of the lower portion of the main frame body 1 are respectively connected with the third rotating shaft 61 in a rotating mode, the third sliding rods 62 are respectively welded on the third rotating shaft 61, the weighting blocks 63 are respectively connected with the third sliding rods 62 in a sliding mode, and the weighting blocks 63 are used for keeping balance of the multifunctional bookcase which is movable and easy to look up. When the placing frame 37 moves forwards to extend, people manually rotate the third rotating shaft 61, the third rotating shaft 61 drives the third sliding rod 62 to rotate, then the weighting block 63 is driven to move backwards along the third sliding rod 62 to weight the rear part of the book cabinet, balance of the book cabinet is kept, the book cabinet is prevented from tilting forwards, when the placing frame 37 moves backwards to be folded, people manually reverse the third rotating shaft 61, the third rotating shaft 61 drives the third sliding rod 62 to reverse, then the weighting block 63 is driven to move forwards along the third sliding rod 62 to weight the front part of the book cabinet, balance of the book cabinet is kept, and the book cabinet is prevented from tilting backwards.

Referring to fig. 1,2, 10 and 11, the device further comprises an adjusting mechanism 7, the adjusting mechanism 7 comprises a push plate 71, a push rod 72, a fourth slide rod 73, a second linear spring 74, a swing rod 75 and a torsion spring 76, the push plate 71 is connected to the left side and the right side of the placement frame 37, the fourth slide rod 73 is welded to the left side and the right side of the upper portion of the main frame 1, the push plate 71 moves forwards to be in contact with the push rod 72, the second linear spring 74 is connected between the push rod 72 on the left side and the fourth slide rod 73 on the left side, the second linear spring 74 is connected between the push rod 72 on the right side and the fourth slide rod 73 on the right side, the second linear spring 74 is sleeved on the fourth slide rod 73, the swing rod 75 is connected to the two third rotating shafts 61, the torsion spring 76 is connected between the upper portion of the swing rod 75 and the main frame 1, the torsion spring 76 is sleeved on the third rotating shafts 61, the swing rod 75 on the left side is connected to the push rod 72 on the left side, and the swing rod 72 on the right side is connected to the right side. When the placing frame 37 moves forwards, the pushing plate 71 is driven to move forwards, when the pushing plate 71 contacts with the pushing rod 72, the pushing rod 72 is driven to move forwards, the second linear spring 74 is stretched, the pushing rod 72 drives the third rotating shaft 61 to rotate through the swinging rod 75, the torsion spring 76 deforms, the third rotating shaft 61 automatically rotates to drive the third sliding rod 62 to rotate, the weighting block 63 is driven to move backwards along the third sliding rod 62 to weight the rear part of the book cabinet, when the placing frame 37 moves backwards, the pushing plate 71 is driven to move backwards, the pushing plate 71 is separated from the pushing rod 72, the pushing rod 72 is driven to move backwards to reset under the reset action of the second linear spring 74, the pushing rod 72 drives the third rotating shaft 61 to rotate reversely through the swinging rod 75, the torsion spring 76 is reset along with the pushing rod, the third rotating shaft 61 automatically rotates reversely to drive the third sliding rod 62 to rotate, and the weighting block 63 is driven to move forwards along the third sliding rod 62 to weight the front part of the book cabinet.

Referring to fig. 1,2, 12 and 13, the book placement machine further comprises a sorting mechanism 8, the sorting mechanism 8 comprises sorting rods 82 and sliding rails 83, sliding grooves 81 are formed in the front side of the placement plate 2, the sliding rails 83 are uniformly connected to the rear portion of the main frame body 1, three sorting rods 82 are connected to the sliding rails 83 in a sliding mode, the sorting rods 82 are used for facilitating people to find books, and the upper ends of the sorting rods 82 slide in the sliding grooves 81 located above the placement plate 2. People manually move left and right to adjust the classification rod 82, and the books are classified by the classification rod 82, so that people can find the books conveniently.

While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the following claims. Accordingly, the detailed description of the disclosed embodiments is to be taken only by way of illustration and not by way of limitation, and the scope of protection is defined by the content of the claims.

Claims (4)

1. The utility model provides a portable multi-functional book case of easily consulting, is including main framework (1) and place board (2), and board (2) are placed to the inboard even interval of main framework (1), characterized by: the book storage device also comprises a moving mechanism (3) and a descending mechanism (4), wherein the moving mechanism (3) for storing books is arranged on the upper portion of the main frame body (1), the descending mechanism (4) is connected with the moving mechanism (3), and the descending mechanism (4) drives the moving mechanism (3) to move downwards to reduce the height;

The moving mechanism (3) comprises a first fixed column (31), a screw rod (32), a first sliding rod (33), a sliding sleeve (34), a second sliding rod (35), a threaded sleeve (36) and a placing frame (37), wherein the upper side of the front part of the main frame body (1) is connected with the first fixed column (31), the screw rod (32) is rotationally connected to the first fixed column (31) on the left side, the second sliding rod (35) is connected to the first fixed column (31) on the right side, the threaded sleeve (36) is connected to the screw rod (32), the sliding sleeve (34) is connected to the second sliding rod (35) in a sliding manner, the threaded sleeve (36) and the sliding sleeve (34) are connected with two first sliding rods (33) in a sliding manner, the placing frame (37) is connected between the bottoms of the four first sliding rods (33), and the screw rod (32) is positively and negatively rotated to drive the placing frame (37) to move forwards and backwards through the threaded sleeve (36);

The descending mechanism (4) comprises a driving assembly, a spur gear (43) and a rack (44), wherein the driving assembly for realizing the forward and backward movement of the placement frame (37) is arranged at the upper part of the main frame body (1), the spur gear (43) is connected to the driving assembly, the rack (44) is connected to the middle of the top of the placement frame (37), the placement frame (37) drives the rack (44) to move forwards and mesh with the spur gear (43), the driving assembly drives the spur gear (43) to rotate forwards and backwards, and the spur gear (43) drives the rack (44) and the placement frame (37) to move up and down;

The driving assembly comprises a motor (41), a first rotating shaft (42) and a second fixed column (45), the motor (41) is arranged at the rear side of the upper part of the main frame body (1), the second fixed column (45) is connected in the middle of the upper part of the main frame body (1), the first rotating shaft (42) is rotationally connected to the second fixed column (45), the rear end of the first rotating shaft (42) is connected with an output shaft of the motor (41) through a coupling, the first rotating shaft (42) is connected with a spur gear (43), and the motor (41) drives the first rotating shaft (42) to drive the spur gear (43) to rotate positively and negatively;

The device also comprises a disengaging mechanism (5) for automatically moving the placing frame (37) back and forth, the disengaging mechanism (5) comprises a counter gear (51), a second rotating shaft (52), a flat belt (53), a first linear spring (54), a clamping block (55) and a third fixed column (56), the rear part of the first rotating shaft (42) is connected with the counter gear (51), the rear side of the upper part of the main frame body (1) is connected with the third fixed column (56), the front side of the third fixed column (56) is rotationally connected with the counter gear (51), the counter gear (51) is meshed with each other, the rear side of the upper part of the main frame body (1) is rotationally connected with a second rotating shaft (52), the rear part of the second rotating shaft (52) and the rear part of the screw rod (32) are rotationally connected with the flat belt (53) through a driving wheel, the front part of the second rotating shaft (52) is slidingly connected with the clamping block (55), the first linear spring (54) is connected between the bottom of the clamping block (55) and the second rotating shaft (52), the clamping block (55) is clamped on the counter gear (51) on the left side, the first rotating shaft (42) drives the second rotating shaft (52) to rotate through the counter belt (52) to rotate positively and negatively, the screw rod (32) drives the placement frame (37) to automatically move back and forth through the threaded sleeve (36).

2. The movable and easy-to-review multifunctional bookcase according to claim 1, characterized in that: the multifunctional bookcase is characterized by further comprising a balance mechanism (6) for keeping balance of the multifunctional bookcase which is movable and easy to look up, wherein the balance mechanism (6) comprises a third rotating shaft (61), a third sliding rod (62) and a weighting block (63), the left side and the right side of the lower portion of the main frame body (1) are rotationally connected with the third rotating shaft (61), the third rotating shaft (61) is connected with the third sliding rod (62), the third sliding rod (62) is connected with the weighting block (63) in a sliding manner, the third rotating shaft (61) rotates positively and negatively, the weighting block (63) moves back and forth along the third sliding rod (62), and the position of the weighting block (63) is adjusted to keep balance of the multifunctional bookcase which is movable and easy to look up.

3. The movable and easy-to-review multifunctional bookcase according to claim 2, characterized in that: the device also comprises an adjusting mechanism (7) for automatically positively and negatively rotating and adjusting the position of the weighting block (63) by the third rotating shaft (61), the adjusting mechanism (7) comprises a push plate (71), a push rod (72), a fourth slide rod (73), a second linear spring (74), a swinging rod (75) and a torsion spring (76), the push plate (71) is connected to the left side and the right side of the placement frame (37), the fourth slide rod (73) is connected to the left side and the right side of the upper portion of the main frame (1), the push rod (72) is connected to the fourth slide rod (73) in a sliding manner, the push plate (71) moves forwards to be in contact with the push rod (72), the second linear spring (74) is connected between the push rod (72) on the left side and the fourth slide rod (73) on the right side, the second linear spring (74) is sleeved on the fourth slide rod (73), the swinging rod (75) is connected to the third rotating shaft (61), the swinging rod (75) is connected to the torsion spring (76) on the left side and the swinging rod (72) on the right side of the sliding sleeve, the placing frame (37) drives the push rod (72) to move forwards through the push plate (71), the push rod (72) drives the third rotating shaft (61) to rotate automatically through the swing rod (75), the placing frame (37) drives the push plate (71) to move backwards, the push rod (72) is driven to move backwards under the action of the second linear spring (74), the push rod (72) drives the third rotating shaft (61) to rotate reversely automatically through the swing rod (75), and the third rotating shaft (61) rotates forwards and backwards automatically to adjust the position of the weighting block (63).

4. The movable and easy-to-review multifunctional bookcase according to claim 1, characterized in that: still including classification mechanism (8), classification mechanism (8) are including classification pole (82) and slide rail (83), and place board (2) front side and all open spout (81), and main framework (1) rear portion evenly is connected with slide rail (83), and all sliding connection has classification pole (82) that are used for being convenient for seek books on slide rail (83), and classification pole (82) upper end is located spout (81) of placing board (2) top and slides.