CN112762300A - Large-scale many fans electronic display screen rotary mechanism - Google Patents

Abstract

The invention provides a large-scale multi-fan electronic display screen rotating mechanism which comprises a power assembly, a rotating assembly, a fixing assembly and a band-type brake device. The power assembly consists of a servo motor, a speed reducer, a driving belt wheel, four driven belt wheels and four groups of toothed belts. Speed ratio 1: the reducer 20 increases torque and transmits the power of the servo motor to the driving pulley through the flat key on the rotating shaft, the driving pulley is transmitted to the driven pulley through the toothed belt, and the driven pulley transmits the torque to the rotating shaft through the flat key. The rotary mechanism has certain universality, if more or less electronic screens need to be driven to rotate in actual projects, the reasonable increase and decrease of the driving torques of the servo motor and the speed reducer in the power assembly are only needed to be considered, and the basic frame structure does not need to be changed.

Description

Large-scale many fans electronic display screen rotary mechanism

Technical Field

The invention relates to the technical field of electronic display screen installation, in particular to a large-scale multi-fan electronic display screen rotating mechanism.

Background

In the information age, electronic display screens, which are the best tools for displaying information dynamically in real time and in large scale with low power consumption and the best media for publishing comprehensive information, have been widely used in various aspects of social life, such as advertisement placement, enterprise introduction, exhibition halls, ocean halls and other large-scale propaganda and decoration. In the field of mechanical equipment of large-scale electronic screens, especially in a rotating and moving mechanism of a multi-fan electronic screen, a single oil cylinder is generally adopted to drive a single-fan electronic screen or a single motor is generally adopted to control the rotation of the single-fan electronic screen in a conventional rotating mechanism of the large-scale multi-fan electronic screen, and the conventional designs have the defects of poor rotation synchronism, complex structure, higher cost, large occupied space and the like of the multi-fan electronic screen. Therefore, it is necessary to design a large-scale multi-fan electronic screen rotating mechanism with simple and reasonable structure, reliable operation, economy and practicality.

Disclosure of Invention

Aiming at the technical problems, the invention provides the large-scale multi-fan electronic display screen rotating mechanism which is simple and reasonable in structure, reliable in operation, economical and practical.

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

a large-scale multi-fan electronic display screen rotating mechanism comprises a power assembly and a plurality of rotating assemblies, wherein the power assembly comprises a servo motor, a speed reducer, a driving belt wheel, a plurality of driven belt wheels and a plurality of groups of toothed belts, an output shaft of the servo motor is connected with the speed reducer, a rotating shaft of the speed reducer is connected with the driving belt wheel through flat keys arranged on the rotating shaft, the driving belt wheel and the driven belt wheels are arranged at intervals from left to right in a straight line manner, the plurality of groups of toothed belts are sequentially arranged between the driving belt wheel and the driven belt wheels and between two adjacent driven belt wheels and are used for connecting the driving belt wheel with the driven belt wheels and two adjacent driven belt wheels, each driven belt wheel is respectively connected with each group of rotating assemblies through respective flat keys, each group of rotating assemblies comprises a rotating shaft and an electronic display screen mounting bracket, and one end of the rotating shaft is connected with the driven belt wheel through a flat key of the driven belt wheel, and the other end of the rotating shaft is detachably connected with the upper end of the electronic display screen mounting bracket.

Furthermore, the rotating mechanism also comprises a fixing assembly, the fixing assembly comprises an upper cross beam and a lower supporting frame, and a shell of the speed reducer is connected with the upper cross beam through a connecting piece; one end of the rotating shaft penetrates through the upper cross beam and is connected with the upper end of the electronic display screen; and the lower support frame is connected with the lower end of the electronic display screen mounting bracket.

Furthermore, the connecting piece is a C-shaped support, the C-shaped support comprises an upper transverse face, a lower transverse face and a vertical face, the vertical face is connected with the upper transverse face and the lower transverse face, the vertical face is perpendicular to the upper cross beam, the upper transverse face is connected with a shell of the speed reducer, a rotating shaft of the speed reducer penetrates through the upper transverse face and is connected with the driving belt wheel through a flat key, and the lower transverse face is connected with the upper cross beam.

Furthermore, each rotating assembly further comprises a bearing seat and two bearings, the two bearings are symmetrically arranged in the bearing seats, and the rotating shaft is connected with the upper cross beam through the bearings and the bearing seats; an outer spacer bush is respectively arranged between the two bearings and the bearing seat, an upper oil seal and a lower oil seal are respectively arranged on the two bearings, and inner spacer bushes are respectively arranged between the upper oil seal and the rotating shaft and between the lower oil seal and the rotating shaft; the upper end of the bearing seat is connected with an end cover, a boss is arranged on a rotating shaft extending out of the driven belt wheel, and a locking nut is arranged on the boss.

Furthermore, rotary mechanism still includes a plurality of band-type brake devices, and is a plurality of the band-type brake device is connected with the lower extreme of electronic display screen mount respectively, is fixed in on the under bracing frame simultaneously.

Furthermore, each toothed belt is connected with a belt tensioning mechanism, and the belt tensioning mechanisms are fixed on the upper cross beam.

Furthermore, a gland used for connecting the rotating shaft and the driving belt wheel is arranged at the lower end of the rotating shaft of the speed reducer and is connected with the rotating shaft and the driving belt wheel through bolts.

Further, the bearing is a tapered roller bearing, and the driven belt wheel is of a duplicate gear structure.

Furthermore, the bolt is a hexagon head bolt.

In the large-scale multi-fan electronic display screen rotating mechanism, in a power assembly, a servo motor and a speed reducer are connected into a whole through a matching boss and a flat key, and the speed reducer is reliably connected with a driving belt wheel through the flat key, a gland and an end hexagon bolt; the power assembly is arranged on the C-shaped bracket through a matched boss of the speed reducer, and the C-shaped bracket is arranged on an upper cross beam of the fixing assembly; in the rotating component, the rotating shaft and the electronic display screen mounting bracket are connected into a whole through a screw, the rotating shaft is provided with steps and threads, two inner spacer bushes, two tapered roller bearings, an outer spacer bush, two oil seals and end covers are arranged on the steps of the rotating shaft and the inner hole of the bearing seat, the tapered roller bearing has the obvious advantages that the bearing can bear radial and axial combined load which is mainly radial, the bearing capacity depends on the raceway angle of the outer ring, the bearing capacity is larger when the angle is larger, the bearing belongs to a separated bearing, the bearing clearance needs to be adjusted by an inner spacer bush and an outer spacer bush when being installed, the tapered roller bearing needs to be filled with bearing lithium grease for lubrication, the upper oil seal and the lower oil seal can prevent the bearing lithium grease from losing, the axial fixation of the inner ring and the outer ring of the bearing of the rotating mechanism is realized through the end cover and the locking nut respectively, and the connection of the rotating assembly and the fixing assembly is realized through the unthreaded hole arranged on the bearing seat.

The arrangement of the plurality of groups of toothed belt tensioning mechanisms is used for ensuring the stable and reliable rotation of the electronic screen, and further, the servo motor is selected to control the rotation angle and the error of the electronic screen because the position precision of the servo motor is very accurate.

In the rotating assembly, a locking nut, a rotating shaft, an inner spacer and a bearing inner ring do rotating motion, a bearing seat, a bearing outer ring, an oil seal and an end cover are fixed, and a certain gap is required to be reserved between the end cover and the bearing seat for the axial reliable fixation of the bearing outer ring in the rotating assembly.

The working principle of the large-scale multi-fan electronic display screen rotating mechanism provided by the invention is that the speed ratio is 1: the reducer of 20 increases the moment of torsion and transmits servo motor's power for driving pulley through its flat key that rotates epaxial, and driving pulley transmits for driven pulley through the profile of tooth belt, and driven pulley transmits the moment of torsion for the pivot through the flat key again, and the pivot drives electronic display screen installing support and rotates, and the band-type brake device realizes the band-type brake location after electronic display screen is rotatory targets in place, and fixed subassembly is used for fixed power component, runner assembly and band-type brake device's effect.

Compared with the prior art, the invention has the following beneficial effects:

the driven belt wheel in the power assembly is of a dual gear structure, so that the space can be effectively saved, the torque can be reliably transmitted, and the economical practicability of the mechanism can be improved; the band-type brake device can ensure that the large electronic screen can be quickly and still after rotating in place; the mechanism has certain universality, if more or less electronic screens (three, five, six and the like) need to be driven to rotate in practical items, the reasonable increase and decrease of the driving torque of the servo motor and the speed reducer in the power assembly only need to be considered, and the basic frame structure does not need to be changed.

Drawings

FIG. 1 is a schematic structural view of a rotating mechanism of a multi-fan electronic display according to the present invention;

fig. 2 is a schematic view of a large structure of a portion a in fig. 1.

The device comprises a servo motor 1, a speed reducer 2, a driving belt wheel 3, a toothed belt 4, a belt tensioning mechanism 5, a driven belt wheel 6, a rotating shaft 7, a boss 71, a first flat key 8, a locking nut 9, an end cover 10, a bearing seat 11, an inner spacer 12, a tapered roller bearing 13, an outer spacer 14, an upper oil seal 151, a lower oil seal 152, a lower support frame 16, a band-type brake device 17, an electronic display screen 18, an electronic display screen mounting support 19, an upper beam 20, a gland 21, a hexagonal bolt 22, a second flat key 23, a 24-C-shaped support, an upper transverse plane 241, a lower transverse plane 242 and a vertical plane 243.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

As shown in fig. 1, the large-scale multi-fan electronic screen rotating mechanism comprises a power assembly, a rotating assembly, four groups of fixed assemblies and four band-type brake devices 17, wherein the power assembly comprises a servo motor 1, a speed reducer 2, a driving belt wheel 3, four driven belt wheels 6 and four groups of toothed belts 4; the fixed assembly includes an upper cross member 20 and a lower support frame 16; the output shaft of the servo motor 1 is connected with a speed reducer 2, the shell of the speed reducer 2 is connected with an upper cross beam 20 through a C-shaped support 24, the C-shaped support 24 comprises an upper cross surface 241, a lower cross surface 242 and a vertical surface 243 connecting the upper cross surface 241 and the lower cross surface 242, the vertical surface 243 is perpendicular to the upper cross beam 20, the upper cross surface 241 is connected with the shell of the speed reducer 2, the rotating shaft of the speed reducer 2 penetrates through the upper cross surface 241 and is connected with a driving pulley 3 through a second flat key 23, and the lower cross surface 242 is connected with the upper cross beam 20; a gland 21 for connecting the rotating shaft and the driving pulley 3 is arranged at the lower end of the rotating shaft of the speed reducer 2, and the gland 21 is respectively connected with the rotating shaft and the driving pulley 3 through a hexagon head bolt 22; driving pulley 3 and a plurality of driven pulleys 6 are the straight line from left to right and set up, four groups each other interval between the interval, four groups toothed belt 4 locate in proper order between driving pulley 3 and the driven pulleys 6 and between two adjacent driven pulleys 6 for connect driving pulley 3 and driven pulleys 6 and two adjacent driven pulleys 6, and the transmission of power, every driven pulleys 6 are connected with every group rotating assembly respectively through respective first flat key 8, and every group rotating assembly all is connected with an electronic display screen, every all be connected with belt straining device 5 on toothed belt 4, belt straining device 5 is fixed in on entablature 20.

The rotating assemblies II are four groups, each group of rotating assemblies comprises a rotating shaft 7, an electronic display screen mounting bracket 19, a bearing seat 11 and two tapered roller bearings 13, one end of the rotating shaft 7 is connected with the driven belt wheel 6 through a first flat key 8 of the driven belt wheel 6, the other end of the rotating shaft passes through the upper cross beam 16 and is detachably connected with the upper end of the electronic display screen mounting bracket 19, and the lower end of the electronic display screen mounting bracket 19 is connected with the lower supporting frame 16; the two tapered roller bearings 13 are symmetrically arranged in the bearing seat 11, and the rotating shaft 7 is connected with the upper cross beam 16 through the two tapered roller bearings 13 and the bearing seat 11; an outer spacer bush 14 is respectively arranged between the two tapered roller bearings 13 and the bearing seat 11, an upper oil seal 151 and a lower oil seal 152 are respectively arranged on the two tapered roller bearings 13, and inner spacer bushes 12 are respectively arranged between the upper oil seal 151 and the rotating shaft 7 and between the lower oil seal 152 and the rotating shaft 7; the upper end of the bearing seat 11 is connected with an end cover 10 to axially fix the inner ring of the tapered roller bearing 13, a gap is reserved between the end cover 10 and the bearing seat 11, a boss 71 is arranged on the rotating shaft 7 extending out of the driven belt wheel 6, and the boss 71 is provided with a locking nut 9 for axially fixing the outer ring of the tapered roller bearing 13.

The four band-type brake devices 17 are respectively connected with the lower end of the electronic display screen fixing frame 19 and are fixed on the lower supporting frame 16.

The rotating mechanism has certain universality, and if more or less electronic screens 18 (three fans, five fans, six fans and the like) need to be driven to rotate in actual projects, only the driving torques of the servo motor 1 and the speed reducer 2 in the power assembly need to be considered to be reasonably increased or decreased, and the basic frame structure does not need to be changed.

Those of ordinary skill in the art will understand that: the invention is not to be considered as limited to the specific embodiments thereof, but is to be understood as being modified in all respects, all changes and equivalents that come within the spirit and scope of the invention.

Claims (9)

1. A large-scale multi-fan electronic display screen rotating mechanism comprises a power assembly and a plurality of rotating assemblies, and is characterized in that the power assembly comprises a servo motor, a speed reducer, a driving belt wheel, a plurality of driven belt wheels and a plurality of groups of toothed belts, an output shaft of the servo motor is connected with the speed reducer, a rotating shaft of the speed reducer is connected with the driving belt wheel through flat keys arranged on the rotating shaft, the driving belt wheel and the driven belt wheels are arranged at intervals in a straight line from left to right, the plurality of groups of toothed belts are sequentially arranged between the driving belt wheel and the driven belt wheels and between two adjacent driven belt wheels and are used for connecting the driving belt wheel with the driven belt wheels and two adjacent driven belt wheels, each driven belt wheel is respectively connected with each group of rotating assemblies through respective flat keys, each group of rotating assemblies comprises a rotating shaft and an electronic display screen mounting bracket, and one end of the rotating shaft is connected with the driven belt wheel through a flat key of the driven belt wheel, and the other end of the rotating shaft is detachably connected with the upper end of the electronic display screen mounting bracket.

2. The rotating mechanism of claim 1, further comprising a fixing assembly, wherein the fixing assembly comprises an upper cross beam and a lower supporting frame, and a housing of the reducer is connected to the upper cross beam through a connecting member; one end of the rotating shaft penetrates through the upper cross beam and is connected with the upper end of the electronic display screen; and the lower support frame is connected with the lower end of the electronic display screen mounting bracket.

3. The rotating mechanism of claim 2, wherein the connecting member is a C-shaped bracket, the C-shaped bracket comprises an upper cross surface, a lower cross surface and a vertical surface connecting the upper cross surface and the lower cross surface, the vertical surface is perpendicular to the upper cross beam, the upper cross surface is connected with a housing of the reducer, a rotating shaft of the reducer passes through the upper cross surface and is connected with the driving pulley through a flat key, and the lower cross surface is connected with the upper cross beam.

4. The rotating mechanism for the large-scale multi-fan electronic display screen according to claim 2, wherein each rotating assembly further comprises a bearing seat and two bearings, the two bearings are symmetrically arranged in the bearing seat, and the rotating shaft is connected with the upper cross beam through the bearings and the bearing seats; an outer spacer bush is respectively arranged between the two bearings and the bearing seat, an upper oil seal and a lower oil seal are respectively arranged on the two bearings, and inner spacer bushes are respectively arranged between the upper oil seal and the rotating shaft and between the lower oil seal and the rotating shaft; the upper end of the bearing seat is connected with an end cover, a boss is arranged on a rotating shaft extending out of the driven belt wheel, and a locking nut is arranged on the boss.

5. The rotating mechanism of claim 2, further comprising a plurality of brake devices, wherein the brake devices are respectively connected to the lower end of the electronic display screen holder and are fixed to the lower support frame.

6. The rotating mechanism of claim 1, wherein a belt tensioning mechanism is connected to each toothed belt, and the belt tensioning mechanism is fixed to the upper beam.

7. The rotating mechanism of claim 1, wherein a pressing cover is disposed at the lower end of the rotating shaft of the decelerator for connecting the rotating shaft and the driving pulley, and the pressing cover is connected to the rotating shaft and the driving pulley by bolts.

8. The mechanism as claimed in claim 4, wherein the bearing is a tapered roller bearing, and the driven pulley is a dual gear structure.

9. The rotating mechanism according to claim 7, wherein the bolts are hexagon end socket head bolts.

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