CN112450600A

CN112450600A - Caster retractable removes desk

Info

Publication number: CN112450600A
Application number: CN202011213916.7A
Authority: CN
Inventors: 郭守艳
Original assignee: Individual
Current assignee: Guangdong Junshi Intelligent Furniture Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-03-09
Anticipated expiration: 2040-11-04
Also published as: CN112450600B

Abstract

The invention provides a caster telescopic mobile office table, which comprises a table body and a rolling device, wherein the central positions of the left side and the right side of the bottom of the table body are respectively provided with a hollow groove at the front end and the rear end, the left side and the right side of the central position between the hollow grooves at the same side are respectively and longitudinally and horizontally connected with a screw rod, the front side of the table body is respectively provided with a groove corresponding to the hollow groove, the front end of the screw rod extends into the groove and is fixedly connected with a gear, the left end and the right end of the rear side of the table body are respectively provided with a vertical groove, the upper end of the rear side of the table body is positioned between the vertical grooves and is vertically and horizontally connected with a rotating shaft II, the central position in the horizontal groove is respectively and fixedly connected with a fixed plate, the first rotating shaft is rotatably connected between the fixed plates, the first rotating shaft is in transmission connection with the second rotating shaft through a conical gear, the, the problem of not firm enough is caused to support the table body through the universal wheel among the prior art.

Description

Caster retractable removes desk

Technical Field

The invention relates to the technical field of office equipment, in particular to a movable office table with retractable casters.

Background

The office table is a table which is convenient to work in daily life and work and social activities.

Present traditional desk does not generally have the removal structure, when needing the transport, generally need a plurality of personnel to operate the transport, and very take very much physical power, the desk of universal wheel is installed to a small number in addition, reach the fixed action through the locking universal wheel, though be convenient for remove, but the stress point is on the wheel, easily lead to the wheel to damage, the wheel leads to the desk firm inadequately with ground area of contact little simultaneously, consequently, it is necessary to further study at the desk of installing the universal wheel, provide a truckle retractable and remove the desk.

Disclosure of Invention

In order to solve the technical problems, the invention provides a movable office table with retractable casters, which aims to solve the problems of inconvenient movement and unstable support of the office table.

The invention relates to a purpose of a movable office table with retractable casters, which is achieved by the following specific technical means: a caster telescopic mobile office table comprises a table body and rolling devices, wherein hollow grooves are formed in the front end and the rear end of the central positions of the left side and the right side of the bottom of the table body, screw rods are longitudinally and horizontally rotatably connected to the left side and the right side of the central position between the hollow grooves on the same side, grooves are formed in the front side of the table body corresponding to the hollow grooves, the front ends of the screw rods extend into the grooves and are fixedly connected with gears, driving gears are longitudinally and horizontally rotatably connected between the screw rods in the grooves and are meshed and clamped with the gears on the upper ends of the screw rods, hidden grooves are formed in the left side and the right side of the hollow grooves of the table body and are communicated with the hidden grooves, accommodating grooves are formed in the upper ends of the hollow grooves of the table body, supporting devices capable of moving up and down are installed in the hollow grooves, the rolling devices fixedly connected with the supporting devices are arranged in the hidden grooves, vertical grooves, the vertical horizontal rotation of the inner part of the vertical groove is connected with a second rotating shaft, the central position of the inner part of the transverse groove is connected with a fixed plate fixedly connected with the left end and the right end, the fixed plate is connected with a first rotating shaft in a rotating mode, the first rotating shaft is connected with the second rotating shaft through a bevel gear in a transmission mode, the top of the table body is provided with a 'return' type clamping groove, and the clamping groove is internally connected with an.

Preferably, the groove on one side of the table body is hinged with a door plate, the front end of the driving gear inside the groove is fixedly connected with a handle, and the rear end of a screw rod on one side of the center of the table body is far away and extends into the vertical groove to be connected with the rotating shaft two through a bevel gear in a transmission manner.

Preferably, the supporting device comprises a 20866a type driving rod, a supporting seat, a third rotating shaft, a folding rod assembly and a top plate, wherein the front side and the rear side of the hollow groove, which are positioned at the center position of the lower end of the screw rod, are transversely and vertically connected with the third rotating shaft in a rotating way, the left side and the right side of the center position of the upper end of the third rotating shaft are fixedly connected with gears, the center of the top part in the hollow groove is vertically and fixedly connected with an auxiliary rod, the auxiliary rod is in an inverted T shape, the upper end of the auxiliary rod is sleeved with the 20866a type driving rod, the 20866both sides of the left side and the right side of the type driving rod are fixedly connected with gear teeth from top to bottom in sequence, the 20866666666driving rod is engaged and clamped with the gear teeth at the upper ends of the front side and the rear side of the rotating shaft corresponding to the gear teeth of the front side and the rear, and the front and rear side gear teeth inside the supporting seat are engaged and clamped with the upper end gears of the front and rear side rotating shafts correspondingly.

Preferably, the folding rod assembly comprises a moving block and a third connecting rod, the upper end and the lower end of the moving block are hinged with the third connecting rod, the 20866is hinged with the third connecting rod, the front end and the rear end of the left side and the right side of the top of the driving rod are hinged with the third connecting rod, the other ends of the three connecting rods are hinged with the moving block, the moving block is in threaded connection with the upper end of the lead screw, the moving block at the upper end of.

Preferably, the supporting seat is U-shaped, a push rod is fixedly connected between one side of the top of the supporting seat, which is far away from the center of the table body, and the bottom of the intercepting part, and the push rod is connected with the inside of the table body in a sliding manner.

Preferably, the rolling device comprises a first connecting rod, a second connecting rod, a shaft seat plate and a rolling assembly, the second connecting rod is longitudinally arranged in the hidden groove, the first connecting rod is fixedly connected to the front end and the rear end of the second connecting rod, which are close to one side of the hollow groove, the shaft seat plate is fixedly connected to the front side and the rear side of the bottom of the second connecting rod, and the rolling assembly is movably arranged between the lower ends of the shaft seat plates.

Preferably, the rolling component comprises a third rotating shaft, a dust suction cylinder, a rotating cylinder, a dust suction pipe, a fan wheel, a fixed rod, a fixed frame and a collecting box, the dust suction cylinder is sleeved at the center of the third rotating shaft, the upper end of the third rotating shaft is positioned at the front side and the rear side of the dust suction cylinder and is fixedly connected with the rotating cylinder, one end of the rotating cylinder close to the dust suction cylinder is sleeved at the upper end of the dust suction cylinder, the upper end of the third rotating shaft is positioned in the rotating cylinder and is fixedly connected with the dust suction pipe, the dust suction pipe is a three-way pipe, one pipe orifice of the dust suction pipe is rotatably connected with the upper end of the dust suction cylinder and is communicated with the interior of the dust suction cylinder, the other two pipe orifices of the dust suction pipe are fixedly connected with the inner wall of the rotating cylinder and are communicated with the outside of the rotating cylinder, the fan wheel is fixedly connected at the center of the third rotating shaft in the dust suction cylinder, the fixed frame is internally provided with a collection box which is clamped in a push-pull way, the rotating shaft three is rotatably connected between the shaft seat plates, and the outer surface of the rotating drum is provided with cleaning bristles.

Preferably, one end of the connecting rod is fixedly connected with the 20866and the type driving rod.

Preferably, the interception piece is in a mouth shape, is made of a wood plate and is wrapped by a soft material.

Has the advantages that:

1. the folding assembly is driven to be unfolded through the lead screw, so that 20866can be driven to move downwards from the hollow groove, the supporting seat is driven to ascend, 20866can be driven to drive the rolling device to be in contact with the ground from the hidden groove, the table body is convenient to move, the supporting seat is not required to be moved to be in contact with the ground, the contact area is larger, the table body is more stable, and meanwhile the rolling assembly is hidden and hidden in the hidden groove, so that the attractiveness of the table body is not influenced.

2. In the moving process, the rotating shaft III drives the rotating drum to clean dust accumulated at the bottom of the table body, the fan wheel sucks the dust into the dust suction drum, then the dust enters the collection box through the fixed rod, the dust is convenient to remove, the collection box can be pushed and pulled out, and the dust is convenient to treat.

3. The supporting seat moves towards the upper end of the hollow groove in the moving process, so that the pushing rod is pushed upwards, the blocking piece is pushed out by the pushing rod, and articles at the upper end of the office table can be prevented from falling off in the moving process.

Drawings

FIG. 1 is a schematic view of the overall front view of a partial cross-section of the present invention.

FIG. 2 is a side view of a partial cross-sectional structure of the present invention.

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

Fig. 4 is a schematic top view of the table body of the present invention.

Fig. 5 is a schematic view of a 20866type driving rod in a front view.

FIG. 6 is a schematic side sectional view of the rolling assembly of the present invention.

In fig. 1 to 6, the correspondence between the component names and the reference numbers is:

the table comprises a table body 1, a hidden groove 101, a groove 102, a containing groove 103, a vertical groove 104, a transverse groove 105, a clamping groove 106, a hollow groove 107, a screw rod 2, a supporting device 3, a 20866;, a type driving rod 31, a supporting seat 32, a rotating shaft three 33, a folding rod assembly 34, a top plate 35, a driving gear 4, a rolling device 5, a connecting rod one 51, a connecting rod two 52, a shaft seat plate 53, a rolling assembly 54, a fixing plate 6, a rotating shaft one 7, a rotating shaft two 8, an intercepting piece 9, a push rod 10, a rotating shaft three 11, a dust suction barrel 12, a rotating barrel 13, a dust suction pipe 14, a fan wheel 15, a fixing rod 16, a fixing frame 17, a collecting box 18, a moving block 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Example (b):

as shown in figures 1 to 6: a caster wheel retractable mobile office table comprises a table body 1 and rolling devices 5, wherein the front end and the rear end of the central position of the left side and the right side of the bottom of the table body 1 are respectively provided with a hollow groove 107, the left side and the right side of the central position between the hollow grooves 107 on the same side are respectively and longitudinally and horizontally connected with a screw rod 2, the front side of the table body 1 is provided with a groove 102 corresponding to the hollow grooves 107, the front end of the screw rod 2 extends into the groove 102 and is fixedly connected with a gear, the groove 102 is internally provided with a driving gear 4 between the screw rods 2 and is longitudinally and horizontally connected with the driving gear 4, the driving gear 4 is engaged and clamped with the gear at the upper end of the screw rod 2, the left side and the right side of the hollow groove 107 of the table body 1 are respectively provided with a hidden groove 101, the hollow groove 107 is communicated with the hidden grooves 101, the upper end of the table body 1 on the hollow groove 107, both ends all are equipped with about the 1 rear side of the table body and erect groove 104, table body 1 rear side upper end is located and is equipped with transverse groove 105 between erecting groove 104, erect equal vertical horizontal rotation in groove 104 and be connected with pivot two 8, the equal fixedly connected with fixed plate 6 in both ends about central point puts in transverse groove 105, it is connected with pivot one 7 to rotate between the fixed plate 6, pivot one 7 is connected through conical gear transmission with pivot two 8, table body 1 top is equipped with "return" type draw-in groove 106, sliding connection has interception piece 9 in draw-in groove 106.

Wherein: recess 102 of the 1 one side of the table body articulates there is the door plant, and 4 front end fixedly connected with handles of recess 102 internal drive gear, keep away from 2 rear ends of 1 central one side lead screw of the table body and extend to and erect in groove 104 and be connected through the bevel gear transmission with two 8 of pivot, through handle rotation drive gear 4, can drive lead screw 2 and rotate, make lead screw 2 of the 1 both sides of the table body all rotate through two 8 of pivot and pivot 7, thereby be convenient for control folding pole subassembly 34 is flexible folding simultaneously, when not needing to remove, it is closed with recess 102 front side door board, can not expose gear spare part, and is more pleasing to the eye.

Wherein: the supporting device 3 comprises a 20866a type driving rod 31, a supporting seat 32, a rotating shaft III 33, a folding rod assembly 34 and a top plate 35, wherein the front side and the rear side of the central position of the lower end of the screw rod 2 in the hollow groove 107 are transversely and vertically and rotatably connected with the rotating shaft III 33, the left side and the right side of the central position of the upper end of the rotating shaft III 33 are fixedly connected with gears, the center of the top in the hollow groove 107 is vertically and fixedly connected with an auxiliary rod 21, the auxiliary rod 21 is in an inverted T shape, the upper end of the auxiliary rod 21 is sleeved with a 2086666the type driving rod 31 and 20866the front end and the rear end of the left side and the right side of the type driving rod 31 are sequentially and fixedly connected with gear teeth from top to bottom, the 20866666666666666can be engaged and clamped with the gear teeth at the upper end of the front rotating shaft III 33 at the front side and the rear side, the folding, the front end, the rear end and the left end and the right end of the inner front side and the rear side of the supporting seat 32 are sequentially provided with gear teeth from top to bottom, the gear teeth of the inner front side and the rear side of the supporting seat 32 correspond to the gear at the upper end of the front rotating shaft III 33 and are in meshing clamping connection, the screw rod 2 is rotated to enable the moving block 19 to move towards the center of the hollow groove 107 before the office table is moved, so that the connecting rod III 20 pushes the 20866, the type driving rod 31 moves downwards, the 20866, the rotating shaft III 33 is driven to rotate in the downward process of the type driving rod 31, the supporting seat 32 and the 20866, the type driving rod 31 moves in the opposite direction and contracts into the hollow groove 107, meanwhile, the rolling device 5 follows the 20866.

Wherein: folding rod subassembly 34 is including the movable block 19, connecting rod three 20, the upper and lower extreme of movable block 19 all articulates there is connecting rod three 20, 20866-.

Wherein: the supporting seat 32 is in a U shape, the top of the supporting seat 32 is far away from one side of the center of the table body 1 and is fixedly connected with the push rod 10 between the bottom of the intercepting part 9, the push rod 10 is connected with the inside of the table body 1 in a sliding mode, the push rod 10 is pushed in the upward moving process of the supporting seat 32, and the push rod 10 pushes the intercepting part 9 to move upward.

Wherein: the rolling device 5 comprises a first connecting rod 51, a second connecting rod 52, a shaft seat plate 53 and a rolling assembly 54, wherein the second connecting rod 52 is longitudinally arranged in the hidden groove 101, the first connecting rod 51 is fixedly connected to the front end and the rear end of the second connecting rod 52 close to one side of the hollow groove 107, the shaft seat plate 53 is fixedly connected to the front side and the rear side of the bottom of the second connecting rod 52, and the rolling assembly 54 is movably arranged between the lower ends of the shaft seat plate 53.

Wherein: the rolling component 54 comprises a third rotating shaft 11, a dust suction cylinder 12, a rotating cylinder 13, a dust suction pipe 14, a fan wheel 15, a fixed rod 16, a fixed frame 17 and a collecting box 18, wherein the dust suction cylinder 12 is sleeved at the center of the third rotating shaft 11, the upper end of the third rotating shaft 11 is positioned at the front side and the rear side of the dust suction cylinder 12 and is fixedly connected with the rotating cylinder 13, one end of the rotating cylinder 13 close to the dust suction cylinder 12 is sleeved at the upper end of the dust suction cylinder 12, the upper end of the third rotating shaft 11 is positioned in the rotating cylinder 13 and is fixedly connected with the dust suction pipe 14, the dust suction pipe 14 is a three-way pipe, one pipe orifice of the dust suction pipe 14 is rotatably connected with the upper end of the dust suction cylinder 12 and is communicated with the interior of the dust suction cylinder 12, the other two pipe orifices of the dust suction pipe 14 are fixedly connected with the inner wall of the rotating cylinder 13 and are communicated with the exterior of the rotating cylinder 13, the dust collection device is communicated with the inside of the dust collection cylinder 12, the fan wheel 15 is arranged corresponding to the bottom of the fixed rod 16, the fixed frame 17 is fixedly connected to the front side and the rear side of the fixed rod 16, the collection box 18 clamped in a push-pull mode is arranged in the fixed frame 17, the rotating shaft III 11 is rotatably connected between the shaft seat plates 53, cleaning bristles are arranged on the outer surface of the rotating cylinder 13, the rotating cylinder 13 is in friction rolling with the ground, the fan wheel 15 is driven to rotate, the cleaning bristles on the surface of the rotating cylinder 13 sweep dust at the bottom of the table body 1, the fan wheel 15 rotates to guide the dust to enter the dust collection pipe 14, the dust enters the dust collection cylinder 12 through the dust collection pipe 14, the dust is guided through the fan wheel 15.

Wherein: the other end of the first connecting rod 51 is fixedly connected with a 20866; 'shaped driving rod 31, and the rolling device 5 moves in the same direction with the 20866;' shaped driving rod 31.

Wherein: the interception piece 9 is "mouth" form, the interception piece 9 is wooden board, the outward appearance parcel has soft material, table body 1 removes the articles for use that the in-process interception piece 9 can prevent the desktop and rolls down, the soft material in surface can prevent articles for use to collide with the damage simultaneously, remove the destination, through handle antiport drive gear 4 once more, make 20866type actuating lever 31 get into hollow groove 107, roll the device 5 simultaneously and follow \ 20866;, type actuating lever 31 moves up and gets into hidden groove 101, supporting seat 32 supports ground, make table body 1 firm, when continuing to rotate the handle, make supporting seat 32 can stretch out and draw back, thereby adjust table body 1 height, be applicable to the staff of not co-altitude.

The working principle is as follows: when the table body 1 needs to be moved, a door panel at the front side of the groove 102 is opened, a handle at the upper end of the driving gear 4 is rotated to drive the screw rod 2 to rotate, the folding rod assembly 34 is pushed to move 20866when the screw rod 2 rotates, the section driving rod 31 moves downwards, 20866, the section driving rod 31 drives the rotating shaft three 33 to rotate when the section driving rod 31 moves downwards, so that the supporting seat 32 and the 20866 |, the section driving rod 31 moves in the opposite direction and contracts into the hollow groove 107, meanwhile, the rolling device 5 follows the 20866 |, the section driving rod 31 moves out of the hidden groove 101 to support the ground, the table body 1 is pushed to move, the rotary drum 13 rubs and rolls with the ground, so that the fan wheel 15 is driven to rotate, the surface cleaning hair of the rotary drum 13 sweeps up dust at the bottom of the table body 1, the fan wheel 15 rotates to guide the dust into the dust suction pipe 14, the dust suction pipe 12 is guided by the fan wheel 15, the dust enters the collection box 18, when the desk is moved to a destination, the driving gear 4 is rotated reversely through the handle again, so that the 20866;, the profile driving rod 31 enters the hollow groove 107, the device 5 is rolled to follow the 20866;, the profile driving rod 31 moves upwards to enter the hidden groove 101, the supporting seat 32 supports the ground, the desk body 1 is stable, and when the handle is rotated continuously, the supporting seat 32 can stretch and retract, so that the height of the desk body 1 can be adjusted, and the desk is suitable for workers with different heights.

Claims

1. The utility model provides a truckle retractable removes desk, includes the table body (1), rolling device (5), its characterized in that: the table is characterized in that the front end and the rear end of the center positions of the left side and the right side of the bottom of the table body (1) are respectively provided with a hollow groove (107), the center positions of the left side and the right side between the hollow grooves (107) are respectively connected with a lead screw (2) in a vertical horizontal rotating manner, the front side of the table body (1) is provided with a groove (102) corresponding to the hollow grooves (107), the front end of the lead screw (2) is respectively extended into the groove (102) to be fixedly connected with a gear, the groove (102) is internally provided with a driving gear (4) in a vertical horizontal rotating manner between the lead screws (2), the driving gear (4) is clamped with the upper end of the lead screw (2) in a gear meshing manner, the left side and the right side of the table body (1) are respectively provided with a hidden groove (101), the hollow grooves (107) and the hidden grooves (101) are communicated, the upper end of the table body (1) is respectively provided with a, hide in groove (101) all be equipped with strutting arrangement (3) fixed connection's rolling device (5), both ends all are equipped with about the table body (1) rear side and erect groove (104), table body (1) rear side upper end is located and is equipped with cross slot (105) between erecting groove (104), erect equal vertical level in groove (104) and rotate and be connected with pivot two (8), cross slot (105) inner centre puts about the equal fixedly connected with fixed plate (6) in both ends, it is connected with pivot (7) to rotate between fixed plate (6), pivot one (7) are connected through the bevel gear transmission with pivot two (8), table body (1) top is equipped with "return" type draw-in groove (106), sliding connection has interception piece (9) in draw-in groove (106).

2. The caster wheel retractable mobile desk of claim 1 wherein: the groove (102) on one side of the table body (1) is hinged with a door plate, the front end of the groove (102) is fixedly connected with a handle, and the rear end of the screw rod (2) on one side of the center of the table body (1) is far away from the front end of the groove (4) and extends into the vertical groove (104) to be connected with the second rotating shaft (8) through a bevel gear in a transmission mode.

3. The caster wheel retractable mobile desk of claim 1 wherein: the support device (3) comprises a 20866a type drive rod (31), a support seat (32), a rotating shaft III (33), a folding rod assembly (34) and a top plate (35), wherein the hollow groove (107) is internally provided with the rotating shaft III (33) which is horizontally and vertically connected with the front side and the rear side of the central position of the lower end of the screw rod (2), the left side and the right side of the central position of the upper end of the rotating shaft III (33) are fixedly connected with gears, the center of the inner top of the hollow groove (107) is vertically and fixedly connected with an auxiliary rod (21), the auxiliary rod (21) is in an inverted T shape, the upper end of the auxiliary rod (21) is sleeved with a 20866a type drive rod (31), the front end and the rear end of the left side and the right side of the 208662086620866of the type drive rod (31) are fixedly connected with gear teeth from top to bottom in sequence, the type drive rod assembly (31) and the gear teeth of the front side and rear side are correspondingly, roof (35) are installed to folding pole subassembly (34) upper end, outside lower extreme transmission is connected with supporting seat (32) between three (33) of pivot, both ends are all from last to being equipped with the gear tooth down in proper order around supporting seat (32) is inside around, and supporting seat (32) inside around the gear tooth correspond around the pivot three (33) upper end gear engagement joint of side.

4. The caster wheel retractable mobile desk of claim 3 wherein: folding pole subassembly (34) are including movable block (19), connecting rod three (20), the lower extreme all articulates in movable block (19) has connecting rod three (20), 20866; "type actuating lever (31) top left and right sides front and back end all articulates there is connecting rod three (20), the connecting rod three (20) other end all articulates there is movable block (19), movable block (19) threaded connection is in lead screw (2) upper end, and lead screw (2) upper end movable block (19) sets up relatively, movable block (19) upper end also articulates there is connecting rod three (20), articulates with roof (35) between movable block (19) upper end connecting rod three (20).

5. The caster wheel retractable mobile desk of claim 3 wherein: the supporting seat (32) is U-shaped, the top of the supporting seat (32) is far away from one side of the center of the table body (1) and the bottom of the intercepting part (9), a push rod (10) is fixedly connected with the top of the supporting seat, and the push rod (10) is connected with the inside of the table body (1) in a sliding mode.

6. The caster wheel retractable mobile desk of claim 1 wherein: rolling device (5) are including connecting rod one (51), connecting rod two (52), axle bedplate (53), rolling subassembly (54), connecting rod two (52) vertically set up in hiding groove (101), connecting rod two (52) are close to the equal fixedly connected with connecting rod one (51) of hollow groove (107) one side front and back end, the equal vertical fixedly connected with axle bedplate (53) of side around connecting rod two (52) bottom, movable mounting has rolling subassembly (54) between axle bedplate (53) lower extreme.

7. The caster wheel retractable mobile desk of claim 6 wherein: the rolling component (54) comprises a rotating shaft III (11), a dust suction cylinder (12), a rotating cylinder (13), a dust suction pipe (14), a fan wheel (15), a fixing rod (16), a fixing frame (17) and a collecting box (18), wherein the dust suction cylinder (12) is sleeved at the center of the rotating shaft III (11), the rotating cylinders (13) are fixedly connected with the upper end of the rotating shaft III (11) at the front side and the rear side of the dust suction cylinder (12), one end of the rotating cylinder (13) close to the dust suction cylinder (12) is sleeved at the upper end of the dust suction cylinder (12), the dust suction pipe (14) is fixedly connected with the upper end of the rotating shaft III (11) inside the rotating cylinder (13), the dust suction pipe (14) is a three-way pipe, one pipe orifice of the dust suction pipe (14) is rotatably connected with the upper end of the dust suction cylinder (12) and is communicated with the inside of the dust suction cylinder (12), the other two pipe orifices of the dust suction pipe, the dust collection device is characterized in that the upper end of a third rotating shaft (11) is located in a dust collection cylinder (12) and is fixedly connected with a fan wheel (15) at the inner center, a fixing rod (16) is fixedly connected between the top center of the dust collection cylinder (12) and a second connecting rod (52), the fixing rod (16) is hollow and is communicated with the inside of the dust collection cylinder (12), the fan wheel (15) is arranged corresponding to the bottom of the fixing rod (16), fixing frames (17) are fixedly connected to the front side and the rear side of the fixing rod (16), a collection box (18) of a push-pull block is arranged in the fixing frames (17), the third rotating shaft (11) is rotatably connected between shaft seat plates (53), and cleaning bristles are arranged on the outer surface.

8. The caster wheel retractable mobile desk of claim 6 wherein: the other end of the first connecting rod (51) is fixedly connected with a 20866and a type driving rod (31).

9. The caster wheel retractable mobile desk of claim 1 wherein: the intercepting piece (9) is in a mouth shape, the intercepting piece (9) is made of a wood plate, and the outer surface of the intercepting piece is wrapped by a soft material.