CN114568831A

CN114568831A - Movable desk convenient for collective activities of classes

Info

Publication number: CN114568831A
Application number: CN202210140403.0A
Authority: CN
Inventors: 黄超云
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-06-03

Abstract

The invention relates to a movable desk, in particular to a movable desk convenient for collective activities of classes. The invention provides a movable desk which can be movably fixed and can reduce the height of the desk simultaneously when the moving function is switched, so that the desk is convenient for the collective movement of classes. The utility model provides a movable type desk convenient to collective activity of class, is including stabilizer blade, connecting rod, first slide bar, framework, screw etc. and stabilizer blade quantity is two, is connected with the connecting rod between two stabilizer blades, and stabilizer blade upper portion all slidingtype is equipped with first slide bar, is connected with the framework between the first slide bar top, and the equal screw thread formula in stabilizer blade upper portion is equipped with the screw that has the fastening, the screw inner all with the first slide bar contact of homonymy. The wheels move downwards to be in contact with the ground by controlling the extension of the telescopic ends of the electric push rods, the supporting legs are separated from the ground, and the desk can easily move on the ground under the rolling matching of the wheels.

Description

Movable desk convenient for collective activities of classes

Technical Field

The invention relates to a movable desk, in particular to a movable desk convenient for collective activities of classes.

Background

Schools often organize various class collective activities for richen the study life of schools and improve the cohesion of classes, a lot of class collective activities all need use the desk, some activities still need carry the desk to the open air, because be equipped with books in the desk, it is heavier, and for convenient study moreover, traditional desk does not have the gyro wheel, therefore more labouring at the removal in-process, especially when going up and down stairs, the desktop of desk is higher, not good transport.

Patent application CN203207507U discloses a telescopic and splicable movable desk, which comprises a desktop, telescopic desk legs, a splicing port, fixed desk legs and rollers, wherein the desktop is arranged on the telescopic desk legs which are connected with the fixed desk legs, and the rollers are arranged below the fixed desk legs; the top end of the fixed table leg is provided with an assembling port. The height of the desktop of the movable desk can be adjusted through the telescopic desk legs, and the height of the desk can be adjusted according to the difference between the height of an individual and the sitting height; the bottom is provided with the roller, so that the desk is convenient to move, and meanwhile, splicing among a plurality of desks can be realized by utilizing the splicing port. However, the moving function and the lifting function of the movable desk are independent, and the rollers cannot be folded, so that the desk cannot be fixed, and the desk is easy to move during learning.

Based on the defects of the existing movable desk, the movable desk which can be moved and fixed and can reduce the height of the desk simultaneously when the moving function is switched and is convenient for collective activities of classes is designed.

Disclosure of Invention

In order to overcome the defects that the existing movable desk cannot be fixed and the movable function and the lifting function are mutually independent, the invention has the technical problems that: the movable desk is movable and fixable, and can reduce the height of the desk simultaneously when the moving function is switched, so that the desk is convenient for collective activities of classes.

The technical implementation scheme of the invention is as follows: the utility model provides a movable type desk convenient to collective activity of class, including the stabilizer blade, the connecting rod, first slide bar, the framework, the screw, moving mechanism and clamping mechanism, stabilizer blade quantity is two, be connected with the connecting rod between two stabilizer blades, stabilizer blade upper portion all slidingtype is equipped with first slide bar, be connected with the framework between the first slide bar top, the equal screw thread formula in stabilizer blade upper portion is equipped with the screw that has the fastening effect, screw inner all with the first slide bar contact of homonymy, be connected with the moving mechanism who conveniently drives the desk and remove on the plane between connecting rod and the stabilizer blade, the last clamping mechanism that can reduce the desk height so that move the desk that is equipped with of moving mechanism.

More preferably, electric putter, the movable block, first slide bar, connecting block and wheel constitute moving mechanism, and the connecting rod mid-mounting has electric putter, and electric putter's flexible end is equipped with the movable block with stabilizer blade sliding connection, and both sides all are equipped with first slide bar around the stabilizer blade lower part, and the equal longitudinal symmetry in the movable block left and right sides is equipped with the connecting block, and adjacent first slide bar links to each other with the connecting block sliding type, and the equal rotary type in connecting block lower part left and right sides is equipped with the wheel, and the stabilizer blade is located between the wheel of homonymy.

More preferably, the second slide bar, the wedge, the contact block, the third slide bar, the fixture block and the first spring constitute a clamping mechanism, the second slide bar connected with the connecting rod in a sliding manner is arranged on the left side and the right side of the moving block, the wedge is arranged at the top end of the second slide bar, the third slide bar is arranged on the inner side of the upper portion of the support leg, the fixture block clamped with the first slide bar on the same side is arranged between the support leg on the same side and the third slide bar in a sliding manner, the contact block matched with the wedge on the same side in a contact manner is arranged on the lower portion of the fixture block, the first spring is wound on the third slide bar, the inner end of the first spring is connected with the third slide bar, and the outer end of the first spring is connected with the fixture block.

More preferably, still including the pulling mechanism who conveniently promotes the desk and remove, a piece, first reel, first stay cord, a slide rail, first rack, first gear, hand (hold) and second spring constitute pulling mechanism, connecting rod rear side right part is equipped with a piece, frame body rear side right side lower part rotary type is equipped with first reel, be equipped with the slide rail in the middle of the lower part behind the connecting rod, it is equipped with first rack to slide on the slide rail, be equipped with first stay cord on the piece, first stay cord is connected with first rack right-hand member, frame body rear side middle part rotary type is equipped with the hand (hold), be equipped with the first gear with first rack toothing on the hand (hold), be connected with the second spring between first rack left end and the slide rail.

More preferably, the book shelf comprises a stop mechanism for preventing books from being poured out in the moving process, a second reel, a second pull rope, a first support, a third reel, a second support, a baffle, a second gear, a sliding sleeve, a second rack and a third spring form the stop mechanism, the handle is provided with the second reel, the second reel is connected with two second pull ropes, the rear parts of the left side and the right side of the frame body are respectively provided with the first support, the rear side of the first support is respectively and rotatably provided with the third reel, the front parts of the left side and the right side of the frame body are respectively provided with the second support and the sliding sleeve positioned at the rear side of the second support, the middle part of the second support is respectively and rotatably provided with the baffle for blocking books, the front lower part of the baffle is respectively provided with the second gear, the outer side of the sliding sleeve is respectively provided with the second rack in a sliding manner, the second pull ropes respectively bypass the third reels at the same side and are connected with the rear ends of the second racks at the same side, the second gears at the same side are mutually meshed with the second racks, and a third spring is connected between the sliding sleeve at the same side and the rear side of the second rack.

More preferably, the desk further comprises a pushing mechanism which is convenient to lift the desk, the pushing mechanism comprises a hollow sleeve, a second sliding rod and a fourth spring, the hollow sleeve is arranged on the left side and the right side of the top of the moving block, the second sliding rod which upwards pushes the frame body is arranged on the upper portion of the hollow sleeve in a sliding mode, and the fourth spring is connected between the bottom of the second sliding rod on the same side and the inside of the hollow sleeve.

More preferably, still including the tilting mechanism that conveniently moves the desk, tilting mechanism is including third support, handle, torque spring and dog, all is equipped with the third support in the middle of the first slide bar upper portion, and equal rotary type is equipped with the handle on the third support, and both sides all around have torque spring around the handle, and torque spring inner all is connected with the third support, and the torque spring outer end all is connected with the handle, and both sides all are equipped with around the first slide bar upper portion and carry out spacing dog to the handle.

More preferably, the inner side of the first sliding rod is provided with an upper clamping groove and a lower clamping groove.

The invention has the beneficial effects that: 1. the wheels move downwards to be in contact with the ground by controlling the extension of the telescopic ends of the electric push rods, the support legs are separated from the ground, and the desk can easily move on the ground under the rolling matching of the wheels;

2. the moving block slides downwards to drive the second sliding rod to slide downwards, so that the clamping block does not clamp the clamping groove on the lower side of the first sliding rod any longer, the first sliding rod drives the frame body to move downwards under the action of gravity, the height of the desk is shortened, students can conveniently carry the desk when going upstairs and downstairs, and the students can also easily carry the desk under the condition of non-flat ground;

3. when the frame body descends, the first rack drives the handle to swing upwards to a vertical state through the first gear, and students can move the desk on the flat ground by pushing the handle without bending down to push the desk;

4. when the handle swings upwards, the second rack drives the baffle plates to swing forwards through the second gear, and the two baffle plates block the front side of the frame body, so that the book in the frame body is prevented from being inclined forwards in the process of moving the desk;

5. the second sliding rod pushes the frame body upwards to rise a little distance, so that students can lift the frame body more conveniently, and the clamping block is prevented from being clamped into the clamping groove in the upper part of the first sliding rod again;

6. the two handles are respectively held by two hands to rotate upwards, the torsion spring is twisted and deformed, the upper part of the handle is limited when the upper part is turned inwards and the lower part is contacted with the stop block, and therefore, students can conveniently move the desk.

Drawings

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

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic perspective view of a second embodiment of the present invention.

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

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

Fig. 6 is a schematic partial perspective view of the locking mechanism of the present invention.

Fig. 7 is a schematic perspective view of the pulling mechanism of the present invention.

Fig. 8 is a schematic perspective view of a portion of the pulling mechanism of the present invention.

Fig. 9 is a schematic perspective view of the striker mechanism of the present invention.

Fig. 10 is a schematic perspective view of a first part of the striker mechanism of the present invention.

Fig. 11 is a schematic perspective view of a second part of the striker mechanism of the present invention.

Fig. 12 is a schematic perspective view of the pushing mechanism of the present invention.

Fig. 13 is a schematic perspective view of a part of the pushing mechanism of the present invention.

Fig. 14 is a schematic perspective view of the turnover mechanism of the present invention.

Fig. 15 is a schematic perspective view of a portion of the turnover mechanism of the present invention.

The parts are labeled as follows: 1_ foot, 2_ link, 3_ first slide bar, 4_ frame, 5_ screw, 6_ moving mechanism, 61_ electric push rod, 62_ moving block, 63_ first slide bar, 64_ connecting block, 65_ wheel, 7_ detent mechanism, 71_ second slide bar, 72_ wedge block, 73_ touch block, 74_ third slide bar, 75_ dog, 76_ first spring, 8_ pull mechanism, 81_ fulcrum block, 82_ first reel, 83_ first pull rope, 84_ slide rail, 85_ first rack, 86_ first gear, 87_ handle, 88_ second spring, 9_ stop mechanism, 91_ second reel, 92_ second pull rope, 93_ first bracket, 94_ third reel, 95_ second bracket, 96_ stop, 97_ second gear, 98_ slide sleeve, 99_ second rack, 910_ third spring, 10_ pushing mechanism, 101_ hollow sleeve, 102_ second sliding bar, 103_ fourth spring, 11_ turnover mechanism, 111_ third bracket, 112_ grip, 113_ torsion spring, 114_ stopper.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

Example 1

The utility model provides a movable type desk convenient to team group's activity, as shown in fig. 1, fig. 2 and fig. 3, including stabilizer blade 1, connecting rod 2, first slide bar 3, the framework 4, the screw 5, moving mechanism 6 and clamping mechanism 7, stabilizer blade 1 quantity is two, be equipped with connecting rod 2 through the riveted mode between two stabilizer blades 1, stabilizer blade 1 upper portion all slidingtype is equipped with first slide bar 3, first slide bar 3 inboard all opens two upper and lower draw-in grooves, be connected with framework 4 between first slide bar 3 top, stabilizer blade 1 upper portion all is equipped with screw 5 threadedly, screw 5 the inner all contacts with the first slide bar 3 of homonymy, be connected with moving mechanism 6 between connecting rod 2 and the stabilizer blade 1, moving mechanism 6 makes things convenient for the drive desk to move on the plane, be equipped with clamping mechanism 7 on moving mechanism 6, clamping mechanism 7 can reduce the desk height so that the desk is convenient for move.

As shown in fig. 4, the moving mechanism 6 includes an electric push rod 61, a moving block 62, a first slide bar 63, a connecting block 64 and wheels 65, the electric push rod 61 is installed in the middle of the connecting rod 2 in a bolt manner, the moving block 62 is welded at the telescopic end of the electric push rod 61, the support leg 1 is connected with the moving block 62 in a sliding manner, the first slide bar 63 is fixedly arranged on the front side and the rear side of the lower portion of the support leg 1, the connecting blocks 64 are symmetrically arranged on the front side and the rear side of the left side and the right side of the moving block 62, the adjacent first slide bars 63 are connected with the connecting block 64 in a sliding manner, the wheels 65 are arranged on the left side and the right side of the lower portion of the connecting block 64 in a bearing manner, and the support leg 1 is located between the wheels 65 on the same side.

As shown in fig. 5 and 6, the clamping mechanism 7 includes a second slide bar 71, a wedge block 72, a touch block 73, a third slide bar 74, a latch 75 and a first spring 76, the second slide bar 71 is fixedly connected to both left and right sides of the moving block 62, the second slide bar 71 is slidably connected to the connecting rod 2, the wedge block 72 is welded to the top end of the second slide bar 71, the third slide bar 74 is disposed on the inner side of the upper portion of the supporting leg 1, the latch 75 is slidably disposed between the supporting leg 1 and the third slide bar 74 on the same side, the latch 75 is engaged with the first slide bar 3 on the same side, the touch block 73 is disposed on the lower portion of the latch 75, the touch block 73 is in contact fit with the wedge block 72 on the same side, the wedge block 72 moves downward to press the touch block 73 to slide inward, the first spring 76 is wound around the third slide bar 74, the inner end of the first spring 76 is connected to the third slide bar 74, and the outer end of the first spring 76 is connected to the latch 75.

In order to facilitate the desk to be moved and used when a class moves collectively, the movable desk can be equipped in a classroom, when the desk needs to be moved, a student unscrews the screw 5 and controls the telescopic end of the electric push rod 61 to extend, so as to drive the movable block 62 to slide downwards, the movable block 62 drives the wheel 65 to move downwards through the connecting block 64 to be contacted with the ground, thus, the support leg 1 is separated from the ground, the desk can easily move on the ground under the rolling fit of the wheel 65, the movable block 62 slides downwards to drive the second slide rod 71 to slide downwards, so as to drive the wedge block 72 to move downwards, the wedge block 72 extrudes the contact block 73 to slide inwards, the contact block 73 drives the clamping block 75 to slide inwards, the first spring 76 is compressed, so that the clamping block 75 does not clamp the clamping groove of the first slide rod 3, and under the action of gravity, the first slide rod 3 drives the frame 4 to move downwards, when the wedge block 72 moves downwards to be no longer in contact with the touch block 73, and the fixture block 75 corresponds to the clamping groove on the upper part of the first sliding rod 3, the first spring 76 resets to drive the fixture block 75 to slide outwards and be clamped into the clamping groove on the upper part of the first sliding rod 3, the fixture block 75 slides outwards to drive the touch block 73 to move outwards and reset, so that the height of the desk is shortened, the desk is convenient to carry when students go up and down stairs, students can easily carry the desk under the condition of non-flat ground, when the desk needs to be fixed on the ground, the students control the telescopic end of the electric push rod 61 to be shortened so as to drive the moving block 62 to slide upwards, the moving block 62 drives the wheels 65 to move upwards through the connecting blocks 64 so as to be separated from the ground, the support legs 1 are in contact with the ground, the moving block 62 slides upwards to drive the second sliding rod 71 to slide upwards so as to drive the wedge block 72 to move upwards, and the wedge block 72 extrudes the touch block 73 to slide inwards, the contact block 73 drives the clamping block 75 to slide inwards, the first spring 76 is compressed, the clamping block 75 is enabled not to clamp the clamping groove in the upper portion of the first sliding rod 3 any more, at the moment, a student lifts the frame body 4 upwards, the frame body 4 drives the first sliding rod 3 to move upwards, when the wedge block 72 moves upwards to be not in contact with the contact block 73, and the clamping block 75 corresponds to the clamping groove in the lower portion of the first sliding rod 3, at the moment, the first spring 76 resets to drive the clamping block 75 to slide outwards to be clamped into the clamping groove in the lower portion of the first sliding rod 3, the clamping block 75 slides outwards to drive the contact block 73 to move outwards to reset, therefore, the height of the desk is extended, the student tightens the screw 5 at the moment, and the desk is convenient to use when the class moves collectively.

Example 2

On the basis of the embodiment 1, as shown in fig. 3, fig. 7 and fig. 8, the desk further comprises a pulling mechanism 8, the pulling mechanism 8 is convenient for pushing the desk to move, the pulling mechanism 8 comprises a support block 81, a first reel 82, a first pull rope 83, a slide rail 84, a first rack 85, a first gear 86, a handle 87 and a second spring 88, the support block 81 is arranged at the right part of the rear side of the connecting rod 2, the first reel 82 is rotatably installed at the right lower part of the rear side of the frame 4, the slide rail 84 is fixedly connected to the middle of the rear lower part of the connecting rod 2 through a bolt, the first rack 85 is slidably arranged on the slide rail 84, the first pull rope 83 is arranged on the support block 81, the first pull rope 83 sequentially bypasses the first reel 82 and passes through the slide rail 84 to be connected to the right end of the first rack 85, the handle 87 is rotatably arranged at the middle part of the rear side of the frame 4 through a rotating shaft, the rotating shaft on the handle 87 is provided with the first gear 86 through a key connection, the first gear 86 is engaged with the first rack 85, and a second spring 88 is connected between the left end of the first rack 85 and the slide rail 84.

When the frame body 4 is lowered, the first pulling rope 83 is loosened, so that the second spring 88 is reset to drive the first rack 85 to slide leftwards, the first rack 85 drives the handle 87 to swing upwards to a vertical state through the first gear 86, a student can drive the desk to move on the flat ground by pushing the handle 87 without bending, when the frame body 4 is raised, the first pulling rope 83 pulls the first rack 85 to slide rightwards, the second spring 88 is stretched, the first rack 85 drives the handle 87 to swing downwards through the first gear 86 to retract, and the first reel 82 plays a role in guiding the first pulling rope 83.

As shown in fig. 1, 9, 10 and 11, the book-blocking device 9 is further included, the book-blocking device 9 prevents the book from being poured out during the moving process, the book-blocking device 9 includes a second reel 91, a second pull rope 92, a first bracket 93, a third reel 94, a second bracket 95, a baffle 96, a second gear 97, a sliding sleeve 98, a second rack 99 and a third spring 910, the second reel 91 is connected to a rotating shaft of the handle 87 by a key, the two second pull ropes 92 are connected to the second reel 91, the first bracket 93 is respectively arranged at the rear parts of the left and right sides of the frame 4, the third reel 94 is respectively rotatably arranged at the rear sides of the first bracket 93, the second bracket 95 and the sliding sleeve 98 are respectively arranged at the front parts of the left and right sides of the frame 4, the sliding sleeve 98 is arranged at the rear side of the second bracket 95, the baffle 96 is respectively arranged at the middle part of the second bracket 95 by way of a bearing, the baffle 96 is used for blocking the book, the second gear 97 is respectively arranged at the front lower part of the baffle 96, the outer sides of the sliding sleeves 98 are both provided with second racks 99 in a sliding manner, the second pull ropes 92 are connected with the rear ends of the second racks 99 on the same side by bypassing the third reels 94 on the same side, the second gears 97 on the same side are meshed with the second racks 99, and third springs 910 are connected between the sliding sleeves 98 on the same side and the rear sides of the second racks 99.

When the handle 87 swings upwards, the handle 87 unwinds the second pull rope 92 through the second reel 91, the second pull rope 92 is loose, the third spring 910 in a stretching state resets to drive the second rack 99 to slide forwards, the second rack 99 drives the baffle 96 to swing forwards through the second gear 97, the two baffles 96 block the front side of the frame 4, the situation that a book in the frame 4 tilts forwards in the desk moving process is avoided, when the handle 87 swings downwards, the handle 87 tightens the second pull rope 92 through the second reel 91, the second pull rope 92 pulls the second rack 99 to slide backwards, the third spring 910 is stretched, the second rack 99 drives the baffle 96 to swing backwards through the second gear 97 to retract, and the third reel 94 plays a guiding role on the second pull rope 92.

As shown in fig. 1, 12 and 13, the desk further comprises a pushing mechanism 10, the pushing mechanism 10 facilitates lifting the desk, the pushing mechanism 10 comprises a hollow sleeve 101, a second sliding rod 102 and a fourth spring 103, the hollow sleeve 101 is arranged on the left side and the right side of the top of the moving block 62, the hollow sleeve 101 slides to penetrate through the connecting rod 2, the second sliding rod 102 is arranged on the upper portion of the hollow sleeve 101 in a sliding mode, after the frame body 4 descends, the second sliding rod 102 can move upwards to contact with the bottom of the frame body 4, the hollow sleeve 101 can sleeve the second sliding rod 102, and the fourth spring 103 is connected between the bottom of the second sliding rod 102 on the same side and the inside of the hollow sleeve 101.

The moving block 62 slides up and down to drive the hollow sleeve 101 to move up and down, the second sliding rod 102 and the fourth spring 103 move along with the movement, when the second sliding rod 102 moves upwards to contact with the bottom of the frame body 4, and the clamping block 75 does not clamp the clamping groove in the upper portion of the first sliding rod 3, the second sliding rod 102 upwards pushes the frame body 4 to lift a little distance, so that the clamping groove in the upper portion of the first sliding rod 3 does not correspond to the clamping block 75, students can lift the frame body 4 more conveniently, the clamping block 75 is prevented from being clamped into the clamping groove in the upper portion of the first sliding rod 3 again, in the process that the second sliding rod 102 upwards pushes the frame body 4, the fourth spring 103 is compressed, and when the second sliding rod 102 does not contact with the frame body 4 again, the fourth spring 103 resets.

As shown in fig. 1, 14 and 15, the desk turning device further comprises a turning mechanism 11, the turning mechanism 11 facilitates the desk to be moved, the turning mechanism 11 comprises a third support 111, a handle 112, a torsion spring 113 and a stopper 114, the third support 111 is arranged in the middle of the upper portion of the first sliding rod 3, the handle 112 is arranged on the third support 111 through a bearing, the torsion spring 113 is wound around the front side and the rear side of the handle 112, the inner end of the torsion spring 113 is connected with the third support 111, the outer end of the torsion spring 113 is connected with the handle 112, the stoppers 114 are arranged on the front side and the rear side of the upper portion of the first sliding rod 3, and the upper portion of the handle 112 is turned inwards and contacts with the stoppers 114.

When the desk needs to be moved, two hands respectively hold the two handles 112 to rotate upwards, the torsion spring 113 is twisted and deformed, the upper part of the handle 112 is limited when being turned inwards and downwards and contacted with the stop block 114, so that students can conveniently move the desk, after the desk is put down, the handle 112 is released, and the torsion spring 113 is reset to drive the handle 112 to rotate downwards and be folded.

While the disclosure has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims

1. The utility model provides a movable type desk convenient to collective activity of class, including stabilizer blade (1), connecting rod (2), first slide bar (3), framework (4) and screw (5), stabilizer blade (1) quantity is two, be connected with connecting rod (2) between two stabilizer blades (1), stabilizer blade (1) upper portion all slidingtype is equipped with first slide bar (3), be connected with framework (4) between first slide bar (3) top, stabilizer blade (1) upper portion all threaded type is equipped with screw (5) that have the fastening effect, screw (5) inner all contact with first slide bar (3) of homonymy, characterized by: the desk is characterized by further comprising a moving mechanism (6) and a clamping mechanism (7), the moving mechanism (6) which is convenient for driving the desk to move on a plane is connected between the connecting rod (2) and the supporting legs (1), and the clamping mechanism (7) which can reduce the height of the desk and is convenient for moving the desk is arranged on the moving mechanism (6).

2. A movable desk for facilitating collective activities of classes according to claim 1, characterized in that: electric putter (61), movable block (62), first slide bar (63), connecting block (64) and wheel (65) constitute moving mechanism (6), connecting rod (2) mid-mounting has electric putter (61), electric putter's (61) flexible end is equipped with movable block (62) with stabilizer blade (1) sliding connection, both sides all are equipped with first slide bar (63) around stabilizer blade (1) lower part, the equal front and back symmetry in movable block (62) left and right sides is equipped with connecting block (64), adjacent first slide bar (63) link to each other with connecting block (64) sliding type, the equal rotary type in connecting block (64) lower part left and right sides is equipped with wheel (65), stabilizer blade (1) is located between wheel (65) of homonymy.

3. A movable desk for facilitating collective activities of classes according to claim 2, characterized in that: the second sliding rod (71), the wedge-shaped block (72), the touch block (73), the third sliding rod (74), the clamping block (75) and the first spring (76) form a clamping mechanism (7), the left side and the right side of the moving block (62) are respectively provided with a second sliding rod (71) which is connected with the connecting rod (2) in a sliding manner, the top end of each second sliding rod (71) is provided with a wedge-shaped block (72), the inner side of the upper part of each support leg (1) is provided with a third sliding rod (74), a clamping block (75) clamped with the first sliding rod (3) on the same side is arranged between each support leg (1) and the corresponding third sliding rod (74) in a sliding manner, the lower part of each clamping block (75) is provided with a contact block (73) in contact fit with the wedge-shaped block (72) on the same side, each third sliding rod (74) is wound with a first spring (76), the inner end of each first spring (76) is connected with the corresponding third sliding rod (74), and the outer end of each first spring (76) is connected with the corresponding clamping block (75).

4. A movable desk for facilitating collective activities of classes according to claim 3, wherein: also comprises a pulling mechanism (8) which is convenient for pushing the desk to move, a supporting block (81), a first reel (82), a first pull rope (83) and a slide rail (84), first rack (85), first gear (86), hand (87) and second spring (88) constitute pulling mechanism (8), connecting rod (2) rear side right part is equipped with a piece (81), framework (4) rear side right side lower part rotary type is equipped with first reel (82), be equipped with slide rail (84) in the middle of connecting rod (2) rear lower part, slide rail (84) go up the gliding style and are equipped with first rack (85), be equipped with first stay cord (83) on a piece (81), first stay cord (83) are connected with first rack (85) right-hand member, framework (4) rear side middle part rotary type is equipped with hand (87), be equipped with first gear (86) with first rack (85) meshing on hand (87), be connected with second spring (88) between first rack (85) left end and slide rail (84).

5. The desk of claim 4, wherein the desk is a removable desk for collective activities of classes: the book storage rack is characterized by further comprising a material blocking mechanism (9) for preventing books from being poured out in the moving process, wherein the material blocking mechanism (9) comprises a second reel (91), a second pull rope (92), a first support (93), a third reel (94), a second support (95), a baffle (96), a second gear (97), a sliding sleeve (98), a second rack (99) and a third spring (910), the material blocking mechanism (9) is formed, the second reel (91) is arranged on the handle (87), the two second pull ropes (92) are connected to the second reel (91), the first supports (93) are arranged on the rear portions of the left side and the right side of the frame body (4), the third reels (94) are arranged on the rear portions of the left side and the right side of the frame body (4) in a rotating mode, the second supports (95) and the sliding sleeve (98) located on the rear sides of the second supports (95) are arranged on the front portions of the left side and the right side of the frame body (4), the baffle (96) for blocking the books is arranged in a rotating mode in the middle of the second supports (95), the front lower part of the baffle (96) is provided with a second gear (97), the outer side of the sliding sleeve (98) is provided with a second rack (99) in a sliding manner, the second pull rope (92) bypasses a third reel (94) on the same side and is connected with the rear end of the second rack (99) on the same side, the second gear (97) and the second rack (99) on the same side are meshed with each other, and a third spring (910) is connected between the sliding sleeve (98) on the same side and the rear side of the second rack (99).

6. The desk of claim 5, wherein the desk is a removable desk for collective activities of classes: still including convenient pushing mechanism (10) of lifting the desk on, pushing mechanism (10) all are equipped with hollow cover (101) including hollow cover (101), second slide bar (102) and fourth spring (103) in the movable block (62) top left and right sides, and hollow cover (101) upper portion all is equipped with second slide bar (102) that upwards promote framework (4) in a slidingtype, all is connected with fourth spring (103) between the second slide bar (102) bottom of homonymy and hollow cover (101) inside.

7. A movable desk for facilitating collective activities of classes according to claim 6, characterized in that: still including tilting mechanism (11) of conveniently carrying the desk, tilting mechanism (11) are including third support (111), handle (112), torque spring (113) and dog (114), all be equipped with third support (111) in the middle of first slide bar (3) upper portion, equal rotary type is equipped with handle (112) on third support (111), both sides are all around having torque spring (113) around handle (112), torque spring (113) inner all is connected with third support (111), torque spring (113) outer end all is connected with handle (112), both sides all are equipped with around first slide bar (3) upper portion and carry out spacing dog (114) to handle (112).

8. The desk of claim 7, wherein the desk is a removable desk for collective activities of classes: an upper clamping groove and a lower clamping groove are formed in the inner side of the first sliding rod (3).