CN114916174A

CN114916174A - LED screen demountable installation frame convenient to maintain

Info

Publication number: CN114916174A
Application number: CN202210580303.XA
Authority: CN
Inventors: 马翠玲
Original assignee: Zongyun Technology Guangzhou Co Ltd
Current assignee: Zongyun Technology Guangzhou Co Ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-08-16
Anticipated expiration: 2042-05-26
Also published as: CN114916174B

Abstract

The invention relates to a frame, in particular to a LED screen detachable installation frame convenient to maintain. The LED screen demountable installation frame convenient to maintain and convenient to operate, which can be quickly installed and maintained by people, needs to be designed. The utility model provides a LED screen demountable installation frame convenient to maintain, is including fixed underframe, installation limit frame, spacing frame and LED screen, and the fixed underframe left and right sides all is connected with the installation limit frame through bolted connection's mode, has placed spacing frame in the fixed underframe, has still placed the LED screen in the fixed underframe, and the LED screen is located spacing frame rear side. According to the invention, the LED screen is placed on the buffer rubber plate, the limiting frame is placed among the four positioning studs, the limiting frame is placed between the upper and lower positioning studs, the fixing knob is twisted to rotate forwards, the limiting frame moves backwards to limit the LED screen, and then people can install the installation side frame on the wall surface through the bolts, so that the LED screen can be quickly installed and maintained, and the operation is convenient.

Description

LED screen demountable installation frame convenient to maintain

Technical Field

The invention relates to a frame, in particular to a LED screen detachable installation frame convenient to maintain.

Background

An LED is a display mode by controlling a semiconductor light emitting diode, and is used as an electronic lamp or constitutes an alphanumeric display.

Patent application CN204084242U discloses a LED frame, including last frame, lower frame, left side frame and right frame, go up frame and right frame integrated into one piece, lower frame and left frame integrated into one piece, the right side frame is connected with the lower frame, left side frame is connected with last frame. The problem of because the upper and lower frame with the left and right sides frame shape difference need two sets of moulds to produce and make its with high costs, and four frames are assembled respectively and make its production efficiency low is solved. Although the device solves the problem of high cost, the existing LED screen is inconvenient to mount and maintain and is complex to operate.

Based on the defects in the prior art, the LED screen detachable installation frame which can be quickly installed and maintained by people and is convenient to operate and maintain is provided.

Disclosure of Invention

In order to overcome the defects of inconvenience in installation and maintenance and complex operation of the existing LED screen, the invention provides the detachable LED screen installation frame which can be used for rapidly installing and maintaining the LED screen by people and is convenient to operate and maintain.

The invention is realized by the following technical approaches:

the utility model provides a LED screen demountable installation frame convenient to maintain, including fixed underframe, installation limit frame, spacing frame, the LED screen, fixed establishment and buffer gear, the fixed underframe left and right sides all is connected with the installation limit frame through bolted connection's mode, spacing frame has been placed in the fixed underframe, the LED screen has still been placed in the fixed underframe, the LED screen is located spacing frame rear side, be equipped with the fixed establishment who is used for fixing the LED screen on the fixed underframe, fixed establishment and spacing frame sliding connection, be equipped with on the fixed underframe and be used for the buffer gear to the buffering of LED screen.

As a further preferred scheme, the fixing mechanism comprises positioning studs, fixing knobs and a limiting transverse plate, the four positioning studs are fixedly connected to the front side face of the fixing bottom frame at intervals, the positioning studs are slidably connected with the limiting frame, the limiting transverse plate is arranged between the positioning studs on the upper side and the lower side, the limiting transverse plate is located in front of the limiting frame, and the fixing knobs are connected to the positioning studs in a threaded mode.

As a further preferred scheme, the buffer mechanism comprises a buffer rubber plate, first reset guide pillars and first reset springs, the first reset guide pillars are arranged in the fixed bottom frame in a sliding mode at intervals, every two first reset guide pillars form a group, the buffer rubber plate is fixedly connected between the front ends of the first reset guide pillars of each group, the LED screen is in contact with the buffer rubber plate, and the first reset springs are arranged between the rear side face of the buffer rubber plate and the inside of the fixed bottom frame.

As a further preferable scheme, the device also comprises a limiting mechanism for limiting the limiting frame, the limiting mechanism comprises a first positioning transverse shaft, a rotary circular seat, a transmission gear, a second positioning transverse shaft, a limiting clamping block, a second reset guide pillar, a second reset spring, a positioning gear and a fixed rack, the left side and the right side of the fixed underframe are respectively provided with the first positioning transverse shaft in a rotating mode, the upper side and the lower side of the first positioning transverse shaft are respectively fixedly connected with the rotary circular seat, the left side and the right side of the fixed underframe are respectively provided with the second positioning transverse shaft in a rotating mode, the second positioning transverse shaft is positioned at the inner side of the first positioning transverse shaft, the upper side and the lower side of the first positioning transverse shaft and the upper side and the lower side of the second positioning transverse shaft are respectively fixedly connected with the transmission gear, two adjacent transmission gears are meshed, the second reset guide pillar is arranged in the rotary circular seat in a sliding mode, the upper part of the second reset guide pillar is fixedly connected with the limiting clamping block for limiting the limiting frame, the second reset spring is connected between the inner part of the rotary circular seat and the second reset guide pillar, the middle part of the second positioning cross shaft is fixedly connected with a positioning gear, the middle parts of the left side and the right side of the limiting frame are fixedly connected with fixed racks, and the adjacent fixed racks are meshed with the positioning gear.

As a further preferable scheme, the LED screen buffer device further comprises an adsorption mechanism for further buffering the LED screen, the adsorption mechanism comprises a protective cover, a first hydraulic cylinder, a first hydraulic rod, a rotary seat with a column, a hinged connecting rod, a liquid guide pipe, a fixed underframe, a second hydraulic cylinder, a rubber sucker, a second hydraulic rod and a positioning spring, the protective cover is fixedly connected to the upper side surface and the lower side surface of the fixed underframe, the first hydraulic cylinder is fixedly connected to the upper side and the lower side surface of the fixed underframe in a bilateral symmetry manner, the first hydraulic rod is arranged in the first hydraulic cylinder in a sliding manner, the hinged connecting rod is rotatably arranged outside the first hydraulic rod, the rotary seat with the column is fixedly connected to the front side and the rear side surface of the second positioning cross shaft, the fixed underframe is fixedly connected to the rear portion of the fixed underframe in a vertical symmetry manner, the second hydraulic cylinder is fixedly connected to the left side and the right side surface of the fixed underframe, the liquid guide pipe is connected between the adjacent first hydraulic cylinder and the second hydraulic cylinder, the second hydraulic cylinder is fixedly connected in a sliding manner, the front end of the second hydraulic rod is fixedly connected with a rubber sucker, the rubber sucker is in contact with the LED screen, and a positioning spring is connected between the inside of the second hydraulic cylinder and the second hydraulic rod.

As a further preferred scheme, the LED screen heat dissipation device further comprises a heat dissipation mechanism for dissipating heat of the LED screen, wherein the heat dissipation mechanism comprises a heat dissipation bottom frame, heat dissipation fans and dustproof cover plates, the heat dissipation bottom frame is embedded in the middle of the lower portion of the fixed bottom frame, the three heat dissipation fans for dissipating heat of the LED screen are arranged in the heat dissipation bottom frame in an interval rotating mode, the six dustproof cover plates are arranged on the heat dissipation fans at intervals, every two dustproof cover plates form a group, and each heat dissipation fan is located between every two dustproof cover plates.

As a further preferable scheme, the rain shelter device further comprises a rain shelter mechanism, the rain shelter mechanism comprises a shelter plate and a positioning frame, the positioning frame is fixedly connected to the top of the limiting frame, and the shelter plate for sheltering from rain is fixedly connected to the positioning frame.

As a further preferable scheme, the outer part of the rotating base with the column is rotatably provided with a column sliding shaft, and the column sliding shaft of the adjacent rotating base with the column is rotatably connected with the hinged connecting rod.

The invention has the beneficial effects that:

1. according to the invention, the LED screen is placed on the buffer rubber plate, the limiting frame is placed among the four positioning studs, the limiting frame is placed between the upper and lower positioning studs, the fixing knob is twisted to rotate forwards, the limiting frame moves backwards to limit the LED screen, and then people can install the installation side frame on the wall surface through the bolts, so that the LED screen can be quickly installed and maintained, and the operation is convenient.

2. Under the action of the limiting mechanism, the rotary round seat swings inwards to drive the limiting clamping block to swing inwards, the limiting clamping block moves inwards to limit the limiting frame, and the second return spring plays a buffering role, so that the limiting frame can be further limited.

3. Under the action of the heat dissipation mechanism, the heat dissipation fan operates to dissipate heat of the LED screen, so that the heat dissipation and ventilation of the LED screen can be facilitated.

Drawings

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

FIG. 2 is a first partial cross-sectional structural schematic of the present invention.

Fig. 3 is a partial sectional structural schematic view of the fixing mechanism of the present invention.

Fig. 4 is a partial sectional structural schematic view of the damper mechanism of the present invention.

FIG. 5 is a second partial sectional structural view of the present invention.

Fig. 6 is a schematic sectional view of a first part of the limiting mechanism of the present invention.

Fig. 7 is a second partial sectional structural schematic diagram of the limiting mechanism of the invention.

Fig. 8 is a third partial sectional structural schematic view of the spacing mechanism of the present invention.

Fig. 9 is a first partial sectional structural view of the adsorption mechanism of the present invention.

FIG. 10 is a second partial sectional structural view of the adsorption mechanism of the present invention.

Fig. 11 is an enlarged schematic view of part a of the present invention.

FIG. 12 is a third partial sectional structural view of the adsorption mechanism of the present invention.

FIG. 13 is a third partial cross-sectional structural schematic of the present invention.

Fig. 14 is a partial sectional structural schematic view of the heat dissipation mechanism of the present invention.

Fig. 15 is a partial sectional structural view of the shielding mechanism of the present invention.

Description of reference numerals: 1_ fixed bottom frame, 2_ mounting side frame, 3_ limit frame, 4_ LED screen, 5_ fixing mechanism, 51_ positioning stud, 52_ fixing knob, 53_ limit transverse plate, 6_ buffer mechanism, 61_ buffer rubber plate, 62_ first return guide post, 63_ first return spring, 7_ limit mechanism, 71_ first positioning transverse shaft, 72_ rotary circular base, 73_ transmission gear, 74_ second positioning transverse shaft, 75_ limit clamp block, 76_ second return guide post, 77_ second return spring, 78_ positioning gear, 79_ fixed rack frame, 8_ adsorption mechanism, 81_ protective housing, 82_ first hydraulic cylinder, 83_ first hydraulic rod, 84_ column rotary base, 85_ hinge connecting rod, 86_ liquid guide tube, 87_ fixed bottom frame, 88_ second hydraulic cylinder, 89_ rubber suction cup 810, second hydraulic rod, 811_ positioning spring, 9_ heat dissipation mechanism, 91_ radiating bottom frame, 92_ radiating fan, 93_ dustproof cover plate, 10_ shielding mechanism, 101_ shielding plate and 102_ positioning frame.

Detailed Description

The invention is further explained by combining the drawings in the specification and the embodiments of the invention are given by combining the drawings in the specification.

Example 1

The utility model provides a LED screen demountable installation frame convenient to maintain, as shown in fig. 1-4, including fixed underframe 1, installation limit frame 2, spacing frame 3, LED screen 4, fixed establishment 5 and buffer gear 6, the fixed underframe 1 left and right sides all is connected with installation limit frame 2 through bolted connection's mode, spacing frame 3 has been placed in fixed underframe 1, LED screen 4 has still been placed in fixed underframe 1, LED screen 4 is located 3 rear sides of spacing frame, be equipped with fixed establishment 5 on the fixed underframe 1, fixed establishment 5 can realize fixing LED screen 4, fixed

establishment

5 and 3 sliding connection of spacing frame, be equipped with buffer gear 6 on the fixed underframe 1, buffer gear 6 can realize buffering LED screen 4.

As shown in fig. 2 and 3, the fixing mechanism 5 includes positioning studs 51, fixing knobs 52 and a limiting transverse plate 53, four positioning studs 51 are fixedly connected to the front side of the fixing bottom frame 1 at intervals, the positioning studs 51 are slidably connected with the limiting frame 3, the limiting transverse plate 53 is placed between the positioning studs 51 on the upper side and the lower side, the limiting transverse plate 53 is located in front of the limiting frame 3, and the fixing knobs 52 are threadedly connected to the positioning studs 51.

As shown in fig. 2 and 4, the buffering mechanism 6 includes a buffering rubber plate 61, first returning guide posts 62 and first returning springs 63, the first returning guide posts 62 are arranged in the fixed bottom frame 1 in a sliding manner at intervals, every two first returning guide posts 62 form a group, the buffering rubber plate 61 is fixedly connected between the front ends of each group of first returning guide posts 62, the LED screen 4 contacts with the buffering rubber plate 61, and the first returning springs 63 are arranged between the rear side of the buffering rubber plate 61 and the inside of the fixed bottom frame 1.

Firstly, an operator places an LED screen 4 on a buffer rubber plate 61, then places a limiting frame 3 between four positioning studs 51, places the limiting frame 3 between the upper and lower positioning studs 51, twists a fixing knob 52 to rotate forwards, rotates the fixing knob 52 forwards to enable a limiting transverse plate 53 to move backwards, moves the limiting transverse plate 53 backwards to drive the limiting frame 3 to move backwards, moves the limiting frame 3 backwards to limit the LED screen 4, the buffer rubber plate 61 plays a role of buffering through a first return spring 63, and then people can install an installation side frame 2 on a wall surface through bolts, thus, the LED screen 4 can be conveniently disassembled and assembled by people, when people do not need to use the LED screen 4, the assembling side frame 2 is firstly disassembled from the wall surface, then the fixing knob 52 is twisted to rotate reversely to disassemble, and then the limiting transverse plate 53 and the limiting frame 3 are sequentially taken down, and finally the LED screen 4 is taken out.

Example 2

In addition to embodiment 1, as shown in fig. 5 to 8, the present invention further includes a position-limiting mechanism 7, the position-limiting mechanism 7 includes a first positioning horizontal shaft 71, a rotary circular base 72, a transmission gear 73, a second positioning horizontal shaft 74, a position-limiting clamp block 75, a second return guide post 76, a second return spring 77, a positioning gear 78 and a fixed rack 79, the left and right sides of the fixed bottom frame 1 are rotatably provided with the first positioning horizontal shaft 71, the upper and lower sides of the first positioning horizontal shaft 71 are fixedly connected with the rotary circular base 72, the left and right sides of the fixed bottom frame 1 are rotatably provided with the second positioning horizontal shaft 74, the second positioning horizontal shaft 74 is located inside the first positioning horizontal shaft 71, the upper and lower sides of the first positioning horizontal shaft 71 and the upper and lower sides of the second positioning horizontal shaft 74 are fixedly connected with the transmission gear 73, two adjacent transmission gears 73 are engaged, the second return guide post 76 is slidably provided in the rotary circular base 72, the upper portion of the second return guide post 76 is fixedly connected with the position-limiting clamp block 75, the limiting clamping block 75 can limit the limiting frame 3, a second reset spring 77 is connected between the inside of the rotary round seat 72 and the second reset guide post 76, a positioning gear 78 is fixedly connected to the middle of the second positioning transverse shaft 74, fixed racks 79 are fixedly connected to the middle of the left side and the right side of the limiting frame 3, and the adjacent fixed racks 79 are meshed with the positioning gear 78.

As shown in fig. 5, 9, 10, 11 and 12, the present invention further comprises an adsorption mechanism 8, the adsorption mechanism 8 comprises a protective cover 81, a first hydraulic cylinder 82, a first hydraulic rod 83, a rotary base 84 with a column, a hinged connecting rod 85, a liquid guide tube 86, a fixed bottom frame 87, a second hydraulic cylinder 88, a rubber suction cup 89, a second hydraulic rod 810 and a positioning spring 811, the protective cover 81 is fixedly connected to both upper and lower sides of the fixed bottom frame 1, the first hydraulic cylinder 82 is fixedly connected to both upper and lower sides of the fixed bottom frame 1 in a bilateral symmetry manner, the first hydraulic rod 83 is slidably arranged in the first hydraulic cylinder 82, the hinged connecting rod 85 is rotatably arranged outside the first hydraulic rod 83, the rotary base 84 with a column is rotatably arranged on both front and rear sides of the second positioning transverse shaft 74, the cylindrical sliding shaft of the rotary base 84 with a column is rotatably arranged outside the rotary base 84, the cylindrical sliding shaft of the adjacent rotary base 84 with a column is rotatably connected to the hinged connecting rod 85, the fixed bottom frame 87 is rotatably arranged on the rear portion of the fixed bottom frame 1 in a vertical symmetry manner, the left side and the right side of the fixed underframe 87 are fixedly connected with a second hydraulic cylinder 88, a liquid guide pipe 86 is connected between the adjacent first hydraulic cylinder 82 and the second hydraulic cylinder 88, a second hydraulic rod 810 is arranged in the second hydraulic cylinder 88 in a sliding manner, the front end of the second hydraulic rod 810 is fixedly connected with a rubber suction cup 89, the rubber suction cup 89 is in contact with the LED screen 4, and a positioning spring 811 is connected between the inside of the second hydraulic cylinder 88 and the second hydraulic rod 810.

When the limiting frame 3 is placed between the four positioning studs 51, the fixed rack frame 79 is engaged with the positioning gear 78, the fixed knob 52 is twisted to rotate forward, the limiting frame 3 moves backward to drive the fixed rack frame 79 to move backward, the fixed rack frame 79 moves backward to drive the positioning gear 78 to rotate, the positioning gear 78 rotates to drive the second positioning cross shaft 74 to rotate, the second positioning cross shaft 74 rotates to drive the first positioning cross shaft 71 to rotate through the transmission gear 73, the first positioning cross shaft 71 rotates to drive the rotary circular seat 72 to swing inward, the rotary circular seat 72 swings inward to drive the limiting clamping block 75 to swing inward, the limiting clamping block 75 moves inward to limit the limiting frame 3, the second reset spring 77 plays a buffering role, when people do not need to use the LED screen 4, the limiting frame 3 is taken out, the fixed rack frame 79 drives the positioning gear 78 to rotate to reset, the rotary circular seat 72 also drives the limiting clamping block 75 to move outward to reset, thus, the position of the position limiting frame 3 can be further limited.

When people do not need to use the LED screen 4, the limiting frame 3 is taken out, the second positioning transverse shaft 74 drives the first positioning transverse shaft 71 to rotate and reset through the transmission gear 73, the second positioning transverse shaft 74 drives the belt post rotating seat 84 to swing inwards and reset, the belt post rotating seat 84 swings inwards and resets and drives the hinged connecting rod 85 to move inwards, the hinged connecting rod 85 moves inwards and drives the first hydraulic rod 83 to move inwards, the first hydraulic rod 83 moves inwards and discharges hydraulic oil in the first hydraulic cylinder 82 into the second hydraulic cylinder 88 through the liquid guide pipe 86, further, the second hydraulic rod 810 drives the rubber suction cup 89 to move forwards and reset, the LED screen 4 is taken down for subsequent processing, similarly, when the LED screen 4 is placed on the buffer rubber plate 61, the LED screen 4 is in contact with the rubber suction cup 89, the rubber suction cup 89 adsorbs the LED screen 4, when the second positioning transverse shaft 74 rotates, the second positioning transverse shaft 74 drives the belt post rotating seat 84 to swing outwards, take the outside swing of post roating seat 84 to drive articulated connecting rod 85 and outwards remove, articulated connecting rod 85 outwards removes and drives first hydraulic stem 83 and outwards removes, first hydraulic stem 83 outwards removes and passes through in hydraulic oil discharge first hydraulic cylinder 82 in catheter 86 with second hydraulic cylinder 88, and then second hydraulic stem 810 also drives rubber suction cup 89 and moves backward, produce the collision if fixed underframe 1, second hydraulic stem 810 can play certain cushioning effect to LED screen 4 through rubber suction cup 89, so, can further cushion LED screen 4.

Example 3

On the basis of the embodiment 1 and the embodiment 2, as shown in fig. 13 and 14, the heat dissipation device 9 further includes a heat dissipation mechanism 9, the heat dissipation mechanism 9 includes a heat dissipation bottom frame 91, heat dissipation fans 92 and dust-proof cover plates 93, the heat dissipation bottom frame 91 is embedded in the middle of the lower portion of the fixed bottom frame 1, three heat dissipation fans 92 are arranged in the heat dissipation bottom frame 91 at intervals, the heat dissipation fans 92 can dissipate heat and ventilate the LED screen 4, six dust-proof cover plates 93 are arranged on the heat dissipation fans 92 at intervals, every two dust-proof cover plates 93 are in one group, and each heat dissipation fan 92 is located between each group of dust-proof cover plates 93.

As shown in fig. 13 and 15, the rain shelter device further includes a shelter mechanism 10, the shelter mechanism 10 includes a shelter plate 101 and a positioning frame 102, the positioning frame 102 is fixedly connected to the top of the limiting frame 3, the shelter plate 101 is fixedly connected to the positioning frame 102, and the shelter plate 101 can shield rain.

When people use the device, the heat radiation fan 92 can be started to operate, the heat radiation fan 92 operates to radiate heat to the LED screen 4, the dustproof cover plate 93 can prevent external sundries or garbage from entering the heat radiation fan 92 to cause the heat radiation fan 92 to stop rotating, and similarly, when the device is not required to be used, the heat radiation fan 92 can be closed, so that heat radiation and ventilation can be conveniently carried out on the LED screen 4.

When people's accessible bolt will install side frame 2 on the wall, shielding plate 101 can avoid the rainwater to drip on LED screen 4, so, can conveniently shelter from the rainwater.

Finally, it is necessary to mention that: the above-mentioned contents are only used to help understanding the technical solution of the present invention, and should not be interpreted as limiting the scope of the present invention; insubstantial modifications and adaptations of the invention as described above will occur to those skilled in the art and are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a LED screen demountable installation frame convenient to maintain, including fixed underframe (1), installation limit frame (2), spacing frame (3) and LED screen (4), the fixed underframe (1) left and right sides all is connected with installation limit frame (2) through bolted connection's mode, spacing frame (3) have been placed in fixed underframe (1), LED screen (4) have still been placed in fixed underframe (1), LED screen (4) are located spacing frame (3) rear side, a serial communication port, still including fixed establishment (5) and buffer gear (6), be equipped with fixed establishment (5) that are used for fixing LED screen (4) on fixed underframe (1), fixed establishment (5) and spacing frame (3) sliding connection, be equipped with on fixed underframe (1) and be used for buffer gear (6) to LED screen (4) buffering.

2. The LED screen detachable installation frame convenient to maintain according to claim 1, characterized in that the fixing mechanism (5) comprises positioning studs (51), fixing knobs (52) and limiting transverse plates (53), the four positioning studs (51) are fixedly connected to the front side of the fixing bottom frame (1) at intervals, the positioning studs (51) are slidably connected with the limiting frame (3), the limiting transverse plates (53) are placed between the positioning studs (51) on the upper side and the lower side, the limiting transverse plates (53) are located in front of the limiting frame (3), and the fixing knobs (52) are threadedly connected to the positioning studs (51).

3. The LED screen detachable mounting frame convenient to maintain according to claim 2, wherein the buffering mechanism (6) comprises a buffering rubber plate (61), first resetting guide pillars (62) and first resetting springs (63), the first resetting guide pillars (62) are arranged in the fixed bottom frame (1) in a sliding manner at intervals, every two first resetting guide pillars (62) form a group, the buffering rubber plate (61) is fixedly connected between the front ends of each group of first resetting guide pillars (62), the LED screen (4) is in contact with the buffering rubber plate (61), and the first resetting springs (63) are arranged between the rear side of the buffering rubber plate (61) and the inside of the fixed bottom frame (1).

4. The LED screen detachable installation frame convenient to maintain according to claim 3, further comprising a limiting mechanism (7) for limiting the limiting frame (3), wherein the limiting mechanism (7) comprises a first positioning transverse shaft (71), a rotating round seat (72), a transmission gear (73), a second positioning transverse shaft (74), a limiting clamp block (75), a second reset guide pillar (76), a second reset spring (77), a positioning gear (78) and a fixed rack (79), the left side and the right side of the fixed bottom frame (1) are rotatably provided with the first positioning transverse shaft (71), the upper side and the lower side of the first positioning transverse shaft (71) are fixedly connected with the rotating round seat (72), the left side and the right side of the fixed bottom frame (1) are rotatably provided with the second positioning transverse shaft (74), the second positioning transverse shaft (74) is located inside the first positioning transverse shaft (71), the upper side and the lower side of the first positioning transverse shaft (71) and the upper side and the lower side of the second positioning transverse shaft (74) are fixedly connected with the transmission gear (7) 73) Two adjacent drive gears (73) mesh, rotatory round seat (72) internal sliding type is equipped with second and resets guide pillar (76), second resets guide pillar (76) upper portion rigid coupling has and is used for spacing clamp splice (75) to spacing frame (3), be connected with second reset spring (77) between rotatory round seat (72) inside and second reset guide pillar (76), second location cross axle (74) middle part rigid coupling has location gear (78), spacing frame (3) left and right sides middle part all rigid coupling has fixed rack (79), adjacent fixed rack (79) and location gear (78) mesh.

5. The LED screen detachable installation frame convenient to maintain according to claim 4, further comprising an adsorption mechanism (8) for further buffering the LED screen (4), wherein the adsorption mechanism (8) comprises a protection outer cover (81), a first hydraulic cylinder (82), a first hydraulic rod (83), a rotating base with column (84), a hinged connecting rod (85), a liquid guide pipe (86), a fixed bottom frame (87), a second hydraulic cylinder (88), a rubber suction cup (89), a second hydraulic rod (810) and a positioning spring (811), the protection outer cover (81) is fixedly connected to the upper side surface and the lower side surface of the fixed bottom frame (1), the first hydraulic cylinder (82) is fixedly connected to the upper side surface and the lower side surface of the fixed bottom frame (1) in a left-right symmetrical manner, the first hydraulic rod (83) is arranged in the first hydraulic cylinder (82), the hinged connecting rod (85) is rotatably arranged outside the first hydraulic rod (83), both sides all the rigid coupling have area post roating seat (84) around second location cross axle (74), area post roating seat (84) outside rotary type is equipped with the column slide-axle, adjacent column slide-axle and articulated connecting rod (85) of taking post roating seat (84) rotate to be connected, fixed underframe (1) rear portion longitudinal symmetry rigid coupling has fixed chassis (87), fixed chassis (87) left and right sides all rigid coupling have second hydraulic cylinder (88), be connected with catheter (86) between adjacent first hydraulic cylinder (82) and second hydraulic cylinder (88), second hydraulic cylinder (88) internal sliding type is equipped with second hydraulic cylinder (810), second hydraulic cylinder (810) front end rigid coupling has rubber suction cup (89), rubber suction cup (89) and LED screen (4) contact, be connected with between second hydraulic cylinder (88) inside and the second hydraulic cylinder (810) positioning spring (811).

6. The LED screen demountable installation frame convenient to maintain of claim 5, further comprising a heat dissipation mechanism (9) for dissipating heat of the LED screen (4), wherein the heat dissipation mechanism (9) comprises a heat dissipation chassis (91), heat dissipation fans (92) and dust-proof cover plates (93), the heat dissipation chassis (91) is embedded in the middle of the lower portion of the fixed chassis (1), three heat dissipation fans (92) for dissipating heat of the LED screen (4) are rotatably arranged in the heat dissipation chassis (91) at intervals, six dust-proof cover plates (93) are arranged on the heat dissipation fans (92) at intervals, every two dust-proof cover plates (93) form a group, and each heat dissipation fan (92) is located between each group of dust-proof cover plates (93).

7. The LED screen detachable installation frame convenient to maintain according to claim 6, characterized by further comprising a shielding mechanism (10) for shielding rain, wherein the shielding mechanism (10) comprises a shielding plate (101) and a positioning frame (102), the positioning frame (102) is fixedly connected to the top of the limiting frame (3), and the shielding plate (101) for shielding rain is fixedly connected to the positioning frame (102).

8. The LED screen detachable installation frame convenient for maintenance of claim 7, wherein the column rotary base (84) is externally and rotatably provided with a column sliding shaft, and the adjacent column sliding shaft with the column rotary base (84) is rotatably connected with the hinge connecting rod (85).