CN112024492A

CN112024492A - Display screen cleaning device

Info

Publication number: CN112024492A
Application number: CN202010932196.3A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2020-12-04

Abstract

The invention relates to the technical field of screen cleaning, in particular to a display screen cleaning device, which comprises a cleaning mechanism, wherein the cleaning mechanism is arranged on a frame, the frame can drive the cleaning mechanism to rotate, the cleaning mechanism comprises an installation pipe, a sponge pad is fixedly connected to the bottom of the installation pipe, a lower rotating disk is slidably arranged in the installation pipe, a long shaft is rotatably arranged at the middle part of the lower rotating disk, a driving gear is fixedly connected to the long shaft, a first bevel gear is fixedly connected to the top end of the long shaft, a plurality of short shafts are rotatably arranged on the lower rotating disk, the device rotates when the sponge pad moves linearly, the cleaning efficiency and the cleaning quality of a display screen are improved, a scraper is driven to be far away from the installation pipe by moving a connecting rod, the rotating radius of the scraper far away from the installation pipe is increased, so that the scraper can be contacted with an inner angle of, the ring gear rotates to drive the scraper to rotate, so that the inner angle of the frame is cleaned.

Description

Display screen cleaning device

Technical Field

The invention relates to the technical field of screen cleaning, in particular to a display screen cleaning device.

Background

In recent years, various electronic products are widely used in daily life, and along with the increasing demand for large screen visual enjoyment, large screen CRT, LCD, and plasma displays are in use, and the number of these large screen displays used in outdoor environments is increasing. As is well known, a large screen display used in outdoor environment is attached with a lot of dust after a long time use, which not only easily causes display blurring, but also damages electrical components in the display, and the screen needs to be cleaned. The existing mode for cleaning dust on a large-screen display is generally manually cleaned, the manual cleaning mode is poor in cleaning effect and low in efficiency, and most of large screens used outdoors are often erected at higher positions due to the fact that the large screens occupy quite large space, so that the large screens are inconvenient to clean and have certain dangerousness during climbing operation.

Disclosure of Invention

The invention aims to solve the problem that the efficiency of manually cleaning a large screen is low in the prior art, and provides a display screen cleaning device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a display screen cleaning device, includes clean mechanism, clean mechanism installs in the frame, the frame can drive clean structure rotates, clean mechanism includes the installation pipe, the rigid coupling has the foam-rubber cushion on the installation socle portion, slidable installation lower driving disk in the installation pipe, rotatable long axis of installing on the lower driving disk middle part, the rigid coupling has the driving gear on the long axis, long axis top rigid coupling has first bevel gear, rotatable a plurality of minor axes of installing on the lower driving disk, the minor axis is in on same circumference, the rigid coupling has driven gear on the minor axis, the rigid coupling has the cam on the minor axis above the driven gear, installation pipe up end rigid coupling has ring gear, ring gear meshes on the driven gear, ring gear up end rigid coupling has a plurality of sliding sleeves, a sliding rod is slidably mounted in the sliding sleeve, an arc-shaped convex block is fixedly connected to one end of the sliding rod, an L-shaped connecting rod is fixedly connected to the other end of the sliding rod, a return spring is sleeved on the sliding rod between the convex block and the sliding sleeve, a through hole is formed in the bottom of the connecting rod, a stud is slidably connected in the through hole, a scraper is fixedly connected to one end, away from the mounting pipe, of the stud, an adjusting nut is screwed on the other end of the stud, a compression spring is sleeved on the stud between the scraper and the through hole, an upper rotating disc is rotatably mounted on the long shaft between the first bevel gear and the driving gear, a vertical plate is fixedly connected to the upper rotating disc, a rotating shaft is rotatably mounted on the vertical plate, a second bevel gear is fixedly connected to one end of the rotating shaft, and a first belt wheel is fixedly, the second bevel gear is meshed with the first bevel gear, the rotating shaft is rotatably arranged on the rack, and the rack can drive the first belt wheel to rotate.

Preferably, the machine frame comprises a transmission structure and a driving structure, the telescopic frame comprises a first movable long rod, a belt, a first movable short rod, a connecting plate, a second belt wheel, a second movable short rod, a second movable long rod, a third belt wheel, a rotating shaft, two nut seats and a screw rod, one end of the first movable long rod is rotatably installed on the rotating shaft, the other end of the first movable long rod is hinged on one end of the first movable short rod, the other end of the first movable short rod is hinged on one side of the connecting plate, the other side of the connecting plate is hinged on one end of the second movable short rod, the other end of the second movable short rod is hinged on one end of the second movable long rod, the other end of the second movable long rod is rotatably installed on the rotating shaft, the third belt wheel is fixedly connected on one end of the rotating shaft, and the other end of the rotating shaft is connected with the driving structure, the driving structure can drive the rotating shaft to rotate, the second belt wheel is rotatably arranged on the connecting plate, the belt is arranged on the first belt wheel, the second belt wheel and the third belt wheel in a matched mode, one nut seat is fixedly connected onto the first movable long rod, the other nut seat is fixedly connected onto the second movable long rod, and two ends of the screw rod are in threaded connection with the two nut seats.

Preferably, the drive structure includes two mounting panels, drive gear, reciprocal screw rod, drive gear and motor, the screw has been seted up at the mounting panel middle part, what the axis of rotation was rotatable installs on the mounting panel both sides, reciprocal threaded rod spiro union is in the screw, the keyway has been seted up on the reciprocal screw rod, the rigid coupling has the keybar on the drive gear inner wall, drive gear cover is established between two mounting panels on the reciprocal screw rod, keybar slidable connects in the keyway, the drive gear rigid coupling is in the axis of rotation, drive gear meshes on the drive gear, the output shaft of motor with the one end coaxial line rigid coupling of reciprocal screw rod.

Preferably, install the edulcoration structure on clearance display screen surface in the frame, the edulcoration structure includes first spring, dead lever, wedge platform, scraper blade, even pipe, inserted bar, second spring and slip ring, the slip ring cover is established the reciprocal screw rod is kept away from one of motor is served, first spring cover is established on the slip ring with between the mounting panel reciprocal screw rod, dead lever top rigid coupling is in the slip ring bottom, dead lever bottom rigid coupling is in the wedge platform top, inserted bar one end articulates on the wedge platform lateral wall, the other end cartridge of inserted bar is in the connecting pipe, the one end that the inserted bar was kept away from to even pipe articulates on the scraper blade lateral wall, the second spring cover is established on the inserted bar, set up on the scraper blade with the groove that the wedge platform corresponds, the wedge groove slidable connects in the wedge platform inclined plane, and the wedge-shaped table is provided with a collecting groove.

Preferably, the cam is provided with a wear-resistant layer.

The invention provides a display screen cleaning device, which has the beneficial effects that: this display screen cleaning device rotates when rectilinear movement through the foam-rubber cushion, improves the cleaning efficiency and the clearance quality of display screen, moves through the connecting rod and drives the scraper and keep away from the installation pipe for the scraper is kept away from installation pipe turning radius grow, thereby can with the contact of frame interior angle, during scraper and the contact of frame interior angle, ring gear rotates and can drive the scraper and rotate, thereby clears up the frame interior angle.

Drawings

Fig. 1 is a schematic structural diagram of a display screen cleaning device according to the present invention.

Fig. 2 is a partially enlarged view of a display screen cleaning device according to the present invention.

Fig. 3 is an enlarged view of a display screen cleaning apparatus according to the present invention at a position B.

Fig. 4 is a first structural schematic diagram of a driving structure of a display screen cleaning device according to the present invention.

Fig. 5 is a second schematic structural diagram of a driving structure of a display screen cleaning device according to the present invention.

Fig. 6 is a third schematic structural diagram of a driving structure of a display screen cleaning device according to the present invention.

Fig. 7 is a fourth schematic structural diagram of a driving structure of a display screen cleaning apparatus according to the present invention.

Fig. 8 is a schematic structural diagram of a cleaning mechanism of a display screen cleaning device according to the present invention.

Fig. 9 is a top view of a cleaning mechanism of a display screen cleaning device according to the present invention.

Fig. 10 is a cross-sectional view of a display screen cleaning apparatus according to the present invention in the direction B.

Fig. 11 is a cross-sectional view of a display screen cleaning apparatus according to the present invention.

Fig. 12 is an enlarged view of a portion a of a display screen cleaning apparatus according to the present invention.

Fig. 13 is a working state diagram of a cleaning mechanism of the display screen cleaning device according to the present invention.

Fig. 14 is an enlarged view of a display screen cleaning apparatus according to the present invention at position C.

Fig. 15 is a side view of an impurity removing structure of a display screen cleaning apparatus according to the present invention.

Fig. 16 is a schematic structural diagram of a scraper of a display screen cleaning device according to the present invention.

In the figure: the device comprises a mounting pipe 1, a sponge cushion 2, a lower rotary disk 3, a short shaft 4, a driven gear 5, a cam 6, a long shaft 7, a first bevel gear 8, a driving gear 9, a sliding sleeve 10, a sliding rod 11, a bump 12, a return spring 13, a connecting rod 14, a scraper 15, a through hole 16, a stud 17, an adjusting nut 18, a compression spring 19, a ring gear 20, an upper rotary disk 21, a vertical plate 22, a rotating shaft 23, a second bevel gear 24, a first long movable rod 25, a first belt pulley 26, a belt 27, a first short movable rod 28, a connecting plate 29, a second belt pulley 30, a second short movable rod 31, a second long movable rod 32, a mounting plate 33, a rotating shaft 34, a transmission gear 35, a third belt pulley 36, a screw hole 37, a reciprocating screw rod 38, a key groove 39, a driving gear 40, a key bar 41, a first spring 42, a fixed rod 43, a wedge platform 44, a collecting groove 45, a scraper 46, a wedge, Nut seat 50, screw 51, motor 52, sliding ring 53, display screen 54.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

Referring to fig. 1-13, a display screen cleaning device, comprising a cleaning mechanism, the cleaning mechanism is mounted on a frame, the frame can drive the cleaning mechanism to rotate, the frame comprises a transmission structure and a driving structure, the driving structure comprises two mounting plates 33, a transmission gear 35, a reciprocating screw 38, a driving gear 40 and a motor 52, the middle part of the mounting plate 33 is provided with a screw hole 37, the rotating shaft 34 is rotatably mounted on two sides of the mounting plate 33, the reciprocating screw 38 is screwed in the screw hole 37, the reciprocating screw 38 is provided with a key groove 39, the inner wall of the driving gear 40 is fixedly connected with a key bar 41, the driving gear 40 is sleeved on the reciprocating screw 38 between the two mounting plates 33, the key bar 41 is slidably connected in the key groove 39, the transmission gear 35 is fixedly connected on the rotating shaft 34, the transmission gear 35 is meshed on the, when the motor 52 is started, the motor 52 drives the reciprocating threaded rod 38 to rotate, the reciprocating threaded rod 38 rotates to drive the mounting plate 33 to move along the axial direction of the motor 52, the mounting plate 33 moves to force the key strips 41 on the driving gear 40 to slide in the key slots 39, the reciprocating threaded rod 38 rotates to drive the driving gear 40 to rotate through the matching of the key strips 41 through the key slots 39, and the driving gear 40 rotates to drive the transmission gear 35 to rotate.

The expansion bracket comprises a first movable long rod 25, a belt 27, a first movable short rod 28, a connecting plate 29, a second belt wheel 30, a second movable short rod 31, a second movable long rod 32, a third belt wheel 36, a rotating shaft 34, two nut seats 50 and a screw 51, wherein one end of the first movable long rod 25 is rotatably arranged on the rotating shaft 23, the other end of the first movable long rod 25 is hinged on one end of the first movable short rod 29, the other end of the first movable short rod 29 is hinged on one side of the connecting plate 29, the other side of the connecting plate 29 is hinged on one end of the second movable short rod 31, the other end of the second movable short rod 31 is hinged on one end of the second movable long rod 32, the other end of the second movable long rod 32 is rotatably arranged on the rotating shaft 34, the third belt wheel 36 is fixedly connected on one end of the rotating shaft 34, the other end of the rotating shaft 34 is connected with a driving structure, the driving structure can drive the rotating shaft 34 to rotate, the belt 27 is installed on the first belt wheel 26, the second belt wheel 30 and the third belt wheel 36 in a matching way, one nut seat 50 is fixedly connected on the first movable long rod 25, the other nut seat 50 is fixedly connected on the second movable long rod 32, two ends of a screw 51 are screwed in the two nut seats 50, a transmission gear 35 rotates to drive the rotating shaft 34 and the third belt wheel 36 to rotate, the third belt wheel 36 drives the first belt wheel 26 and the second belt wheel 30 to rotate through the linkage of the belt 27 when rotating, the screw 51 is a bidirectional screw, when the screw 51 is screwed in a unidirectional way, the two nut seats 50 are close to or far away from each other on the screw, therefore, the distance between the first movable long rod 25 and the second movable long rod 32 can be changed by screwing the screw 51, in the process of adjusting the distance between the first movable long rod 25 and the second movable long rod 32, the circumference of a triangle formed by the connection lines of the circle centers of the first belt wheel 26, the second belt wheel 30 and, the belt 27 is always in a tight state, and the shortest distance between the second belt wheel 30 and the screw 51 is changed when the distance between the first movable long rod 25 and the second movable long rod 32 is changed, so that the maximum length of the telescopic frame is changed.

The cleaning mechanism comprises a mounting pipe 1, a sponge cushion 2 is fixedly connected to the bottom of the mounting pipe 1, a lower rotating disk 3 is slidably mounted in the mounting pipe 1, a long shaft 7 is rotatably mounted in the middle of the lower rotating disk 3, a driving gear 9 is fixedly connected to the long shaft 7, a first bevel gear 8 is fixedly connected to the top end of the long shaft 7, a plurality of short shafts 4 are rotatably mounted on the lower rotating disk 3, the central axes of the short shafts 4 are positioned on the same circumference, a driven gear 5 is fixedly connected to the short shafts 4 above the driven gear 5, a cam 6 is fixedly connected to the short shafts 4 above the driven gear 5, a wear-resistant layer is arranged on the cam 6, a ring gear 20 is fixedly connected to the upper end face of the mounting pipe 1, the ring gear 20 is meshed to the driven gear 5, a plurality of sliding sleeves 10 are fixedly connected to the upper end face of the ring gear 20, a sliding rod 11 is slidably mounted in, a reset spring 13 is sleeved on a sliding rod 11 between a convex block 12 and a sliding sleeve 10, a through hole 16 is formed in the bottom of a connecting rod 14, a stud 17 is slidably connected in the through hole 16, a scraper 15 is fixedly connected to one end, away from a mounting pipe 1, of the stud 17, an adjusting nut 18 is screwed at the other end of the stud 17, a compression spring 19 is sleeved on the stud 17 between the scraper 15 and the through hole 16, an upper rotating disc 21 is rotatably mounted on a long shaft 7 between a first bevel gear 8 and a driving gear 9, a vertical plate 22 is fixedly connected to the upper rotating disc 21, a rotating shaft 23 is rotatably mounted on the vertical plate 22, a second bevel gear 24 is fixedly connected to one end of the rotating shaft 23, a first belt wheel 26 is fixedly connected to the other end of the rotating shaft 23, the second bevel gear 24 is meshed with the first bevel gear 8, the. The rotation of the first belt pulley 26 can drive the rotation shaft 23 to rotate, the rotation shaft 23 drives the rotation of the second bevel gear 24, the rotation of the second bevel gear 24 drives the rotation of the first bevel gear 8, the rotation of the first bevel gear 8 drives the rotation of the long shaft 7, the rotation of the long shaft 7 drives the rotation of the driving gear 9, the rotation of the driving gear 9 drives the rotation of the driven gear 5, the rotation of the driven gear 5 drives the rotation of the ring gear 20, the ring gear 20 drives the installation pipe 1 to rotate, the rotation of the installation pipe 1 drives the rotation of the sponge cushion 2, and the surface of the display screen 54 can be cleaned when the sponge; when the driven gear 5 rotates, the short shaft 4 is driven to rotate, the short shaft 4 rotates to drive the cam 6 to rotate, when the cam 6 rotates, pressure can be periodically applied to the lug 12, the lug 12 is forced to move radially along the ring gear 20, the lug 12 moves to drive the sliding rod 11 to slide in the sliding sleeve 10, the sliding rod 11 slides to drive the connecting rod 14 and the ring gear 20 to move radially, during the stress interval of the lug 12, the reset spring 13 can reset the sliding rod 11, the connecting rod 14 moves to drive the scraper 15 to mount the pipe 1 to move radially, and therefore the coverage range of the scraper 15 during rotation is changed.

The using method comprises the following steps:

when the device is used, firstly, manual operation or mechanical operation is selected according to the height of a large screen, the manual operation is suitable for the large screen with lower height, and particularly, the large screen is cleaned by manually holding the handle at the tail part of the motor 52; the mechanical operation is suitable for high-rise operation with high risk, and specifically, the motor 52 is fixed on equipment with telescopic functions, such as an electric telescopic rod, a lifter or a hydraulic rod, and the like through a clamp, so that the coverage of the cleaning device is increased;

after the operation mode is selected, the two cleaning mechanisms of the cleaning device are attached to the screen, the cleaning mechanisms are guaranteed to always have a trend of being close to the display screen 54, then the screw rod 51 is rotated to adjust the length of the telescopic frames, and meanwhile, the included angle between the two telescopic frames is changed, so that the cleaning mechanisms are guaranteed to abut against the inner wall of the frame of the display screen 54 (the specific state is that the sponge cushion 2 on the cleaning mechanisms is always in contact with the frame of the display screen 54).

Secondly, the motor 52 is started, the motor 52 drives the reciprocating screw rod 38 to rotate, the reciprocating screw rod 38 rotates to drive the mounting plate 33 to move back and forth in the axial direction of the reciprocating screw rod 38, the mounting plate 33 moves to drive the telescopic frame and the cleaning mechanism to move repeatedly on the display screen 54, and during the movement of the cleaning mechanism, the sponge cushion 2 on the cleaning mechanism can clean the surface of the display screen 54 and the inner wall of the frame;

the rotation of the reciprocating screw 38 drives the driving gear 40 to rotate, the rotation of the driving gear 40 drives the transmission gear 35 to rotate, the rotation of the transmission gear 35 drives the rotation shaft 34 and the third belt wheel 36 to rotate, the third belt wheel 36 drives the first belt wheel 26 to rotate through the belt 27, the first belt wheel 26 rotates and drives the rotation shaft 23 to rotate, the rotation shaft 23 rotates and drives the second bevel gear 24 to rotate, the second bevel gear 24 rotates and drives the first bevel gear 8 to rotate, the first bevel gear 8 rotates and drives the long shaft 7 to rotate, the long shaft 7 rotates and drives the driving gear 9 to rotate, the driving gear 9 rotates and drives the driven gear 5 to rotate, the driven gear 5 rotates and drives the ring gear 20 to rotate, the ring gear 20 drives the mounting pipe 1 to rotate, the mounting pipe 1 rotates and drives the sponge pad 2 to rotate, and when the sponge pad 2 rotates, the;

the reciprocating screw 38 can also drive the sponge cushion 2 to move linearly, and the sponge cushion 2 rotates during the linear movement, so that the cleaning efficiency and the cleaning quality of the display screen 54 can be improved.

Finally, when cleaning mechanism rectilinear movement to the frame interior angle, 2 both sides of foam-rubber cushion are tangent with frame inner wall both sides, during this period, minor axis 4 rotates and can drive cam 6 and rotate, can be periodic when cam 6 rotates and exert pressure to lug 12, force lug 12 along ring gear 20 radial movement, lug 12 removes and can drive slide bar 11 and slide in sliding sleeve 10, slide bar 11 slides and can drive connecting rod 14 ring gear 20 radial movement, connecting rod 14 removes and drives scraper 15 and keep away from installation pipe 1, make scraper 15 keep away from installation pipe 1 turning radius grow, thereby can with frame interior angle contact, during scraper 15 and the interior angle contact of frame, ring gear 20 rotates and can drive scraper 15 and rotate, thereby clear up the frame interior angle.

Example 2

In order to solve the above problems, the sponge cushion 2 is provided with an impurity removing structure for cleaning the surface of the display screen 54 on the rack, referring to fig. 14-16, the trash removing structure comprises a first spring 42, a fixed rod 43, a wedge-shaped table 44, a scraper 46, a connecting pipe 47, an inserting rod 48, a second spring 49 and a sliding ring 53, wherein the sliding ring 53 is sleeved on one end of the reciprocating screw rod 38 far away from the motor 52, the first spring 42 is sleeved on the reciprocating screw rod 38 between the sliding ring 53 and the mounting plate 33, in order to prevent the sliding ring 53 from contacting with the reciprocating screw rod under the action of external force, a sleeve is fixedly connected to the top of the sliding ring 53, a guide rod is horizontally welded on the mounting plate 33, and the sleeve is sleeved on the guide rod;

one end of a first spring 42 is fixedly connected to a sliding ring 53, the other end of the first spring 42 is fixedly connected to the mounting plate 33, the top end of a fixed rod 43 is fixedly connected to the bottom of the sliding ring 53, the bottom end of the fixed rod 43 is fixedly connected to the top of a wedge-shaped table 44, one end of an insertion rod 48 is hinged to the side wall of the wedge-shaped table 44, the other end of the insertion rod 48 is inserted into a connecting pipe 47, one end, far away from the insertion rod 48, of the connecting pipe 47 is hinged to the side wall of a scraping plate 46, a second spring 49 is sleeved on the insertion rod 48, a wedge-shaped groove 4601 corresponding to the wedge-shaped table 44 is formed in the scraping plate 46, the wedge; the mounting plate 33 will move the first spring 42 when moving on the reciprocating screw 38, the first spring 42 will move the sliding ring 53 to slide on the reciprocating screw 38, the sliding ring 53 will move the wedge-shaped platform 44 through the fixed rod 43, the wedge-shaped platform 44 will move to push the slope-shaped scraper 46 to move, during the movement of the scraper 46, the moisture on the screen surface will be scraped by the scraper 46 and enter into the collection groove 45 along the slope of the scraper 46, when the scraper 46 contacts the frame of the display screen 54, the wedge-shaped table 44 continues to push the scraper 46, the scraper 46 rises along the slope of the wedge-shaped table 44, dust and dirt between the slope of the scraper 46 and the frame of the display screen 54 are lifted up by the scraper 46, when the bottom surface of the scraper 46 is higher than the height of the frame of the display screen 54, the scraper 46 slides along the upper surface of the frame under the action of the second spring 49, and the dust and the sewage are discharged to prevent the dust and the sewage from remaining at the joint of the display screen 54 and the frame.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a display screen cleaning device, a serial communication port, including clean mechanism, clean mechanism installs in the frame, the frame can drive clean structure rotates, clean mechanism is including installation pipe (1), the rigid coupling has foam-rubber cushion (2) on installation pipe (1) bottom, rotatable installation lower driving disk (3) in installation pipe (1) the middle part is gone up rotatable and is installed major axis (7) down, the rigid coupling has driving gear (9) on major axis (7), major axis (7) top rigid coupling has first bevel gear (8), rotatable a plurality of minor axis (4) of installing on lower driving disk (3), minor axis (4) axis is in on the same circumference, the rigid coupling has driven gear (5) on minor axis (4), driven gear (5) top the rigid coupling has cam (6) on minor axis (4), the mounting pipe is characterized in that an upper end face of the mounting pipe (1) is fixedly connected with a ring gear (20), the ring gear (20) is meshed with the driven gear (5), the upper end face of the ring gear (20) is fixedly connected with a plurality of sliding sleeves (10), sliding rods (11) are slidably mounted in the sliding sleeves (10), one ends of the sliding rods (11) are fixedly connected with arc-shaped lugs (12), the other ends of the sliding rods (11) are fixedly connected with L-shaped connecting rods (14), the lugs (12) and the sliding sleeves (10) are sleeved with reset springs (13), through holes (16) are formed in the bottoms of the connecting rods (14), studs (17) are slidably connected in the through holes (16), one ends of the mounting pipes (1) are far away from the studs (17) are fixedly connected with scrapers (15), and adjusting nuts (18) are screwed on the other ends of the studs (17), the double-screw bolt is characterized in that a compression spring (19) is sleeved on the double-screw bolt (17) between the scraper (15) and the through hole (16), an upper rotating disc (21) is rotatably installed on the long shaft (7) between the first bevel gear (8) and the driving gear (9), a vertical plate (22) is fixedly connected onto the upper rotating disc (21), a rotating shaft (23) is rotatably installed on the vertical plate (22), a second bevel gear (24) is fixedly connected onto one end of the rotating shaft (23), a first belt wheel (26) is fixedly connected onto the other end of the rotating shaft (23), the second bevel gear (24) is meshed onto the first bevel gear (8), the rotating shaft (23) is rotatably installed on the rack, and the rack can drive the first belt wheel (26) to rotate.

2. A device for cleaning display screen according to claim 1, characterized in that the frame comprises a transmission structure and a driving structure, the telescopic frame comprises a first movable long rod (25), a belt (27), a first movable short rod (28), a connecting plate (29), a second belt wheel (30), a second movable short rod (31), a second movable long rod (32), a third belt wheel (36) and a rotating shaft (34), two nut seats (50) and a screw (51), one end of the first movable long rod (25) is rotatably mounted on the rotating shaft (23), the other end of the first movable long rod (25) is hinged on one end of the first movable short rod (29), the other end of the first movable short rod (29) is hinged on one side of the connecting plate (29), the other side of the connecting plate (29) is hinged on one end of the second movable short rod (31), the other end of the second movable short rod (31) is hinged on one end of the second movable long rod (32), the other end of the second movable long rod (32) is rotatably arranged on the rotating shaft (34), a third belt wheel (36) is fixedly connected on one end of the rotating shaft (34), the other end of the rotating shaft (34) is connected with the driving structure, the driving structure can drive the rotating shaft (34) to rotate, the second belt wheel (30) is rotatably arranged on the connecting plate (29), the belt (27) is arranged on the first belt wheel (26), the second belt wheel (30) and the third belt wheel (36) in a matching way, one nut seat (50) is fixedly connected on the first movable long rod (25), the other nut seat (50) is fixedly connected on the second movable long rod (32), two ends of the screw rod (51) are screwed in the two nut seats (50).

3. The display screen cleaning device according to claim 1, wherein the driving structure comprises two mounting plates (33), a transmission gear (35), a reciprocating screw (38), a driving gear (40) and a motor (52), a screw hole (37) is formed in the middle of each mounting plate (33), the rotating shaft (34) is rotatably mounted on two sides of each mounting plate (33), the reciprocating screw (38) is screwed in the screw hole (37), a key groove (39) is formed in each reciprocating screw (38), a key bar (41) is fixedly connected to the inner wall of each driving gear (40), the driving gear (40) is sleeved on the reciprocating screw (38) between the two mounting plates (33), the key bar (41) is slidably connected in the key groove (39), and the transmission gear (35) is fixedly connected to the rotating shaft (34), the transmission gear (35) is meshed on the driving gear (40), and an output shaft of the motor (52) is fixedly connected with one end of the reciprocating screw rod (38) in a coaxial line mode.

4. The device for cleaning the display screen according to claim 1, wherein an impurity removing structure for cleaning the surface of the display screen (54) is installed on the machine frame, the impurity removing structure comprises a first spring (42), a fixed rod (43), a wedge-shaped table (44), a scraper (46), a connecting pipe (47), an inserting rod (48), a second spring (49) and a sliding ring (53), the sliding ring (53) is sleeved on one end of the reciprocating screw rod (38) far away from the motor (52), the first spring (42) is sleeved on the reciprocating screw rod (38) between the sliding ring (53) and the mounting plate (33), the top end of the fixed rod (43) is fixedly connected to the bottom of the sliding ring (53), the bottom end of the fixed rod (43) is fixedly connected to the top of the wedge-shaped table (44), and one end of the inserting rod (48) is hinged to the side wall of the wedge-shaped table (44), the other end cartridge of inserted bar (48) is in connecting pipe (47), it articulates to connect pipe (47) to keep away from the one end of inserted bar (48) on scraper blade (46) lateral wall, second spring (49) cover is established on inserted bar (48), seted up on scraper blade (46) with wedge groove (4601) that wedge platform (44) correspond, wedge groove (4601) slidable connect in on wedge platform (44) inclined plane, collecting vat (45) have been seted up on wedge platform (44).

5. A device for cleaning a display screen according to claim 1, characterised in that the cam (6) is provided with a wear layer.