CN111853443B - Vertical lifting device for electronic screen - Google Patents
Vertical lifting device for electronic screen Download PDFInfo
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- CN111853443B CN111853443B CN202010680116.XA CN202010680116A CN111853443B CN 111853443 B CN111853443 B CN 111853443B CN 202010680116 A CN202010680116 A CN 202010680116A CN 111853443 B CN111853443 B CN 111853443B
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- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 230000005484 gravity Effects 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0011—Balancing, e.g. counterbalancing to produce static balance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M2200/00—Details of stands or supports
- F16M2200/04—Balancing means
- F16M2200/047—Balancing means for balancing translational movement of the head
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transmission Devices (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a vertical lifting device of an electronic screen, which comprises a fixed frame which is vertically arranged and is used for being installed on a wall body, wherein a movable frame which is used for installing the electronic screen is vertically and slidably arranged on the fixed frame. The electronic screen has the advantages that the driving mechanism arranged between the movable frame and the fixed frame is used for realizing that the movable frame stably moves up and down on the fixed frame, the balance mechanism is used for realizing the balance of most of the whole gravity after the electronic screen is mounted on the movable frame, and the brake compensation mechanism arranged on the driving mechanism is used for being matched with the balance mechanism to realize the stable positioning when the movable frame moves to the required position, so that the movable frame is prevented from having the trend of upward or downward movement when moving to the required position, and the electronic screen has simple structure, good universality and stable use.
Description
Technical Field
The present disclosure relates to vertical lifting devices, and particularly to a vertical lifting device for an electronic screen.
Background
At present, electronic screens established in public places such as exhibition halls, factories and schools are usually fixedly installed at set positions, so that the requirements of users for sitting, standing, converting and watching are difficult to meet, and vertical lifting devices for the electronic screens are generated. The conventional vertical lifting device for electronic screen generally comprises a fixed frame fixedly installed on a wall body and a movable frame which is vertically slidably arranged on the fixed frame and is used for installing the electronic screen, the electronic screen is installed on the movable frame, the vertical lifting of the electronic screen is realized through the vertical sliding of the movable frame, the movable frame needs to overcome the total gravity of the electronic screen and the electronic screen installed on the movable frame when the movable frame ascends or descends, and in order to ensure that the movable frame can be stably positioned at a position, the whole lifting device is required to be provided with a balance mechanism for balancing the gravity, however, the conventional vertical lifting device for electronic screen can only be used for adapting to the electronic screen with fixed specification and weight, when the weight of the electronic screen installed on the movable frame is changed, the stable use of the whole device is difficult to ensure, so that the whole universality is poor.
Disclosure of Invention
The invention aims to solve the technical problem of providing the electronic screen vertical lifting device which is simple in structure, good in universality and stable in use.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides an electronic screen vertical lifting device, is used for installing the fixed frame on the wall body including vertical setting, fixed frame on can be provided with the removal frame that is used for installing the electronic screen with vertical sliding from top to bottom, the removal frame with fixed frame between be provided with and be used for realizing the drive mechanism that the removal frame steadily slided from top to bottom and be used for realizing gravity balance's balancing mechanism, drive mechanism on be provided with braking compensation mechanism.
The fixed frame include two vertical interval setting support slide bars, two the upper end of support slide bar be connected through an upper cross bar, two support the slide bar between be provided with a horizontal pole, the horizontal pole setting be in the below of upper cross bar, the rear end face of moving frame be provided with support slide bar matched with slide rail, through slide rail and the cooperation realization of corresponding position support the slide bar the moving frame can set up with sliding from top to bottom on the fixed frame. The upper cross rod and the lower cross rod realize the support of the two support slide bars, and the sliding guide and the installation of the movable frame are realized through the cooperation of the slide rail and the support slide bars.
A left mounting upright post and a right mounting upright post are vertically arranged between the upper cross rod and the lower cross rod, and the left mounting upright post and the right mounting upright post are arranged at left and right intervals;
the movable frame comprises two mounting rods which are vertically arranged at intervals, the rear end face of each mounting rod is provided with a vertical sliding rail which is vertically penetrated up and down, the upper ends and the lower ends of the two mounting rods are respectively connected through a connecting cross rod, and a supporting cross rod is arranged between the two connecting cross rods;
The balance mechanism comprises a heavy rod transversely arranged between the two support slide rods, and the heavy rod is arranged below the lower cross rod;
The transmission mechanism comprises a transmission sprocket arranged on the movable frame, a first sprocket, a second sprocket, a third sprocket and a fourth sprocket arranged on the fixed frame, wherein the first sprocket and the second sprocket are vertically opposite to each other and are rotatably arranged on the front end face of the left mounting upright, the third sprocket and the fourth sprocket are vertically opposite to each other and are rotatably arranged on the front end face of the right mounting upright, the rear end face of the support cross rod is rotatably provided with the transmission sprocket, the transmission sprocket is arranged between the left mounting upright and the right mounting upright, the transmission sprocket, the first sprocket, the second sprocket, the third sprocket and the fourth sprocket are connected through a chain, the heavy rod is provided with a left mounting point and a right mounting point for mounting two ends of the chain, the left mounting point is positioned on the left side of the center of the second sprocket, the right mounting point is positioned on the right side of the center of the fourth sprocket, the transmission sprocket is meshed with the third sprocket around the right sprocket, and then meshed with the fourth sprocket around the first sprocket, and then meshed with the second sprocket around the third sprocket around the upper end of the fourth sprocket.
The left mounting upright post and the right mounting upright post play a further role in supporting the strength of the whole fixed frame, and meanwhile, stable mounting and positioning are provided for the mounting of the transmission mechanism; the heavy rod is used for playing a role in gravity balance; the transmission mechanism is simple in structure and low in cost, plays a transmission role on one hand, and plays a connection and installation role between the movable frame and the fixed frame on the other hand.
The first sprocket on coaxial fixed be provided with first connecting axle, first connecting axle rotationally install from the front to the back on the left side installation stand, the second sprocket on coaxial fixed be provided with the second connecting axle, the second connecting axle rotationally install from the front to the back on the left side installation stand, the third sprocket on coaxial fixed be provided with the third connecting axle, the third connecting axle rotationally install from the front to the back on the right side installation stand, the fourth sprocket on coaxial fixed be provided with the fourth connecting axle, the fourth connecting axle rotationally install from the front to the back on the right side installation stand. The rotary installation of each chain wheel is realized by rotatably installing the connecting shaft at the corresponding position.
The brake compensation mechanism comprises an upper brake disc coaxially and fixedly arranged on the first connecting shaft and a lower brake disc coaxially and fixedly arranged on the second connecting shaft, wherein the upper brake disc is arranged in front of the first sprocket at intervals, the lower brake disc is arranged in front of the second sprocket at intervals, front end faces and rear end faces of the upper brake disc and the lower brake disc are respectively provided with a front brake disc and a rear brake disc, the upper cross rod and the lower cross rod are respectively provided with a mounting bracket for mounting the front brake disc and the rear brake disc, the rear brake disc is fixedly mounted on the mounting bracket, the two rear brake discs are respectively attached to the rear end faces of the upper brake disc and the lower brake disc, and the two front brake discs can be mounted on the mounting brackets at corresponding positions in a front-rear adjusting manner. The braking compensation mechanism is simple in structure, whether the braking of the braking disc is controlled by adjusting the front and rear positions of the front braking disc, and force balance of the moving frame provided with the electronic screen in the vertical direction is realized by matching friction force generated between the braking disc and the braking disc with gravity of the heavy rod, so that stable installation and positioning of the moving frame when the moving frame is adjusted to a required position are realized, wherein the upper braking disc is used for realizing the braking of the moving frame in the downward movement process, and the lower braking disc is used for realizing the braking of the moving frame in the upward movement process.
The mounting bracket comprises a supporting rod which is transversely arranged in the front-back direction, a front supporting arm and a rear supporting arm which are vertical are respectively arranged at the front end and the rear end of the lower part of the supporting rod, a front mounting column which is parallel to the supporting rod is arranged at the lower end of the front supporting arm, a rear mounting column which is parallel to the supporting rod is arranged at the lower end of the rear supporting arm, a rear brake block is fixedly arranged at the front end of the rear mounting column, an adjusting screw is coaxially and rotatably arranged on the front mounting column in a penetrating manner from front to back, the front brake block is fixedly arranged at the rear end of the adjusting screw, a vertical connecting column is arranged at the upper end of the supporting rod, the two mounting brackets are arranged in a mirror symmetry manner up and down, and the two connecting columns are respectively and fixedly arranged on the upper cross rod and the lower cross rod so as to realize the mounting of the two mounting brackets. The mounting bracket is simple in structure and low in cost, and the front brake block is driven to move back and forth through forward and reverse rotation of the adjusting screw so as to be separated from or attached to the brake disc, so that the adjustment is convenient.
The first connecting shaft is coaxially and fixedly provided with a forward inner meshing ratchet mechanism, the forward inner meshing ratchet mechanism comprises a pawl supporting disc arranged on the first connecting shaft, a pawl arranged on the pawl supporting disc and a forward ratchet wheel arranged on the outer side of the pawl, forward ratchet wheel teeth matched with the pawl are arranged in the forward ratchet wheel, the first sprocket wheel is coaxially and fixedly arranged on the outer part of the forward ratchet wheel, and when the first connecting shaft rotates positively, the forward ratchet wheel teeth are meshed with the matched pawl to realize synchronous forward rotation of the forward ratchet wheel;
The second connecting shaft is coaxially and fixedly provided with a reverse inner engagement ratchet mechanism, the reverse inner engagement ratchet mechanism comprises a pawl supporting disc arranged on the second connecting shaft, a pawl arranged on the pawl supporting disc and a reverse ratchet wheel arranged on the outer side of the pawl, reverse ratchet wheels matched with the pawl are arranged in the reverse ratchet wheel, the second sprocket is coaxially and fixedly arranged on the outer side of the reverse ratchet wheel, and when the second connecting shaft rotates reversely, the reverse ratchet wheels are engaged with the matched pawl to realize synchronous reverse rotation of the reverse ratchet wheel. The two ratchet mechanisms arranged on the left mounting upright post are stressed oppositely, so that the movable frame can be pushed upwards in a labor-saving manner and pulled downwards stably; when the moving frame moves downwards, the positive internal meshing ratchet mechanism rotates positively, so that the upper brake disc plays a role in braking, and labor-saving movement under weight balance is realized; when the moving frame moves upwards, the reverse internal meshing ratchet mechanism works reversely, so that the lower brake disc plays a role in braking, and labor-saving movement under weight balance is realized.
The left mounting point and the right mounting point are respectively provided with a mounting ring, and two ends of the chain are respectively and fixedly arranged on the two mounting rings. The stable fixed installation at the two ends of the chain is realized through the mounting ring.
The heavy rod is detachably erected and installed between the two supporting slide rods. The heavy rod is detachably mounted, when the electronic screen with different weights is mounted on the movable frame, the heavy rod with different weights can be replaced according to specific conditions, so that balance of gravity is better realized, stable use of the whole device is ensured, and universality is good.
The two opposite end surfaces of the support slide bars are respectively provided with a shelving seat for shelving and installing the heavy bar, the shelving seat comprises a shelving bottom plate which is horizontally arranged, the front side and the rear side of the shelving bottom plate are respectively provided with a positioning wall, a positioning groove for embedding and installing the heavy bar is formed between the two positioning walls, the two positioning walls are respectively provided with a coaxial locking hole which penetrates through the two positioning walls in front and back, the heavy bar is provided with a locking through hole which is coaxial with the locking hole, and the heavy bar is detachably erected and installed between the two support slide bars by sequentially penetrating through the locking holes and the locking through holes through matched detachable locking pieces. The detachable structure for realizing the heavy rod is simple and convenient to install and detach.
The detachable locking piece is a bolt and a locking nut which are matched. Simple structure, convenient installation and disassembly, and low cost.
The front end face of the movable frame is provided with a mounting frame for mounting the electronic screen. And stable installation of the electronic screen is realized.
Compared with the prior art, the invention has the advantages that: the electronic screen is characterized in that the electronic screen is provided with a fixed frame, a driving mechanism arranged between the fixed frame and the movable frame is used for realizing that the movable frame stably moves up and down on the fixed frame, a balance mechanism is used for realizing balance of most of the overall gravity after the electronic screen is mounted on the movable frame, and a brake compensation mechanism arranged on the driving mechanism is used for being matched with the balance mechanism to realize stable positioning when the movable frame moves to a required position, so that the movable frame is prevented from having upward or downward movement trend when the movable frame moves to the required position, and the electronic screen is simple in structure, good in universality and stable in use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a schematic view of the structure of the heavy rod according to the present invention;
FIG. 5 is a schematic view of a structure of a fixing frame according to the present invention;
FIG. 6 is an enlarged schematic view of the structure shown at B in FIG. 5;
FIG. 7 is an enlarged schematic view of FIG. 5C;
fig. 8 is a schematic structural view of a moving frame in the present invention.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 8, an electronic screen vertical lifting device comprises a fixed frame 1 which is vertically arranged and is used for being installed on a wall body, a movable frame 2 which is used for installing an electronic screen is vertically and slidably arranged on the fixed frame 1, a transmission mechanism which is used for realizing stable up-and-down sliding of the movable frame 2 and a balance mechanism which is used for realizing gravity balance are arranged between the movable frame 2 and the fixed frame 1, and a brake compensation mechanism is arranged on the transmission mechanism.
In this specific embodiment, the fixed frame 1 includes two support slide bars 101 disposed at vertical intervals, the upper ends of the two support slide bars 101 are connected by an upper cross bar 102, a lower cross bar 103 is disposed between the two support slide bars 101, the lower cross bar 103 is disposed below the upper cross bar 102, a sliding rail 21 matched with the support slide bars 101 is disposed on the rear end surface of the movable frame 2, and the movable frame 2 is slidably disposed on the fixed frame 1 up and down through the cooperation of the sliding rail 21 and the support slide bars 101 at corresponding positions. The upper cross bar 102 and the lower cross bar 103 support the two support slide bars 101, and the sliding guide and the installation of the movable frame 2 are realized through the cooperation of the slide rail 21 and the support slide bars 101.
In this specific embodiment, a left mounting upright 104 and a right mounting upright 105 are vertically arranged between the upper cross bar 102 and the lower cross bar 103, and the left mounting upright 104 and the right mounting upright 105 are arranged at left and right intervals;
The movable frame 2 comprises two mounting rods 201 which are vertically arranged at intervals, the rear end face of each mounting rod 201 is provided with a vertical sliding rail 21 which is vertically penetrated, the upper ends and the lower ends of the two mounting rods 201 are respectively connected through a connecting cross rod 202, and a supporting cross rod 203 is arranged between the two connecting cross rods 202;
The balance mechanism comprises a heavy rod 3 transversely arranged between two support slide rods 101, and the heavy rod 3 is arranged below the lower cross rod 103; the transmission mechanism comprises a transmission sprocket 41 arranged on the movable frame 2, a first sprocket 42, a second sprocket 43, a third sprocket 44 and a fourth sprocket 45 arranged on the fixed frame 1, the first sprocket 42 and the second sprocket 43 are vertically opposite and rotatably arranged on the front end face of the left mounting upright 104, the third sprocket 44 and the fourth sprocket 45 are vertically opposite and rotatably arranged on the front end face of the right mounting upright 105, the rear end face of the support cross bar 203 is rotatably provided with the transmission sprocket 41, the transmission sprocket 41 is arranged between the left mounting upright 104 and the right mounting upright 105, the transmission sprocket 41, the first sprocket 42, the second sprocket 43, the third sprocket 44 and the fourth sprocket 45 are connected through a chain 4, the heavy rod 3 is provided with a left mounting point and a right mounting point for mounting two ends of the chain 4, the left mounting point is positioned on the left side of the center of the second sprocket 43, one end of the chain 4 is fixedly arranged on the left upper side, the other end of the chain 4 is meshed first around the right side of the second sprocket 43, then around the first sprocket 42 is meshed around the left upper side of the chain 4, and then around the right side of the third sprocket 45 is meshed around the right side of the third sprocket 45.
In this particular embodiment, the left mounting upright 104 and the right mounting upright 105 provide further strength support for the entire fixed frame 1 while providing stable mounting positioning for the mounting of the transmission mechanism; the heavy rod 3 is used for playing a role in gravity balance; the transmission mechanism is simple in structure and low in cost, plays a transmission role on one hand, and plays a connection and installation role between the movable frame 2 and the fixed frame 1 on the other hand.
In this embodiment, a first connecting shaft 402 is coaxially and fixedly disposed on the first sprocket 42, the first connecting shaft 402 is rotatably mounted on the left mounting post 104 from front to back, a second connecting shaft 403 is coaxially and fixedly disposed on the second sprocket 43, the second connecting shaft 403 is rotatably mounted on the left mounting post 104 from front to back, a third connecting shaft 404 is coaxially and fixedly disposed on the third sprocket 44, the third connecting shaft 404 is rotatably mounted on the right mounting post 105 from front to back, a fourth connecting shaft 405 is coaxially and fixedly disposed on the fourth sprocket 45, and the fourth connecting shaft 405 is rotatably mounted on the right mounting post 105 from front to back. The rotary installation of each chain wheel is realized by rotatably installing the connecting shaft at the corresponding position.
In this embodiment, the brake compensation mechanism includes an upper brake disc 51 coaxially fixedly disposed on the first connecting shaft 402 and a lower brake disc 52 coaxially fixedly disposed on the second connecting shaft 403, the upper brake disc 51 is disposed in front of the first sprocket 42 with a spacing, the lower brake disc 52 is disposed in front of the second sprocket 43 with a spacing, front and rear end surfaces of the upper brake disc 51 and the lower brake disc 52 are respectively provided with a front brake pad 53 and a rear brake pad 54, mounting brackets 5 for mounting the front brake pad 53 and the rear brake pad 54 are respectively disposed on the upper cross bar 102 and the lower cross bar 103, the rear brake pad 54 is fixedly mounted on the mounting brackets 5, and the two rear brake pads 54 are respectively fitted to the rear end surfaces of the upper brake disc 51 and the lower brake disc 52, and the two front brake pads 53 are mounted on the mounting brackets 5 in corresponding positions in a front-rear adjustable manner. The brake compensation mechanism has a simple structure, whether the brake disc is braked by the brake disc is controlled by adjusting the front and rear positions of the front brake disc 53, and the force balance of the moving frame 2 provided with the electronic screen in the vertical direction is realized by the friction force generated between the brake disc and the gravity cooperation of the heavy rod 3, so that the stable installation and positioning of the moving frame 2 when the moving frame 2 is adjusted to a required position are realized, wherein the upper brake disc 51 is used for realizing the braking of the moving frame 2 in the downward movement process, and the lower brake disc 52 is used for realizing the braking of the moving frame 2 in the upward movement process.
In this embodiment, the mounting bracket 5 includes a strut 501 transversely disposed in the front-rear direction, a front end and a rear end of the lower portion of the strut 501 are respectively provided with a vertical front support arm 502 and a rear support arm 506, the lower end of the front support arm 502 is provided with a front mounting post 503 parallel to the strut 501, the lower end of the rear support arm 506 is provided with a rear mounting post 507 parallel to the strut 501, a rear brake block 54 is fixedly mounted at the front end of the rear mounting post 507, an adjusting screw 504 is coaxially and rotatably disposed on the front mounting post 503 from front to rear, the front brake block 53 is fixedly mounted at the rear end of the adjusting screw 504, the upper end of the strut 501 is provided with a vertical connecting post 505, the two mounting brackets 5 are disposed up and down in mirror symmetry, and the two mounting brackets 5 are respectively fixedly mounted on the upper cross bar 102 and the lower cross bar 103 through the two connecting posts 505. The mounting bracket 5 has a simple structure and low cost, and the front brake plate 53 is driven to move back and forth by forward and reverse rotation of the adjusting screw 504 so as to be separated from or attached to the brake disc, so that the adjustment is convenient.
In this specific embodiment, a forward inner engagement ratchet mechanism is coaxially and fixedly arranged on the first connecting shaft 402, the forward inner engagement ratchet mechanism comprises a pawl supporting plate 61 arranged on the first connecting shaft 402, a pawl 6 arranged on the pawl supporting plate 61 and a forward ratchet wheel 62 arranged outside the pawl 6, forward ratchet wheel teeth 621 matched with the pawl 6 are arranged in the forward ratchet wheel 62, the first sprocket 42 is coaxially and fixedly arranged outside the forward ratchet wheel 62, and when the first connecting shaft 402 rotates forwards, the forward ratchet wheel teeth 621 are meshed with the matched pawl 6 to realize synchronous forward rotation of the forward ratchet wheel 62;
The second connecting shaft 403 is coaxially and fixedly provided with a reverse inner engagement ratchet mechanism, the reverse inner engagement ratchet mechanism comprises a pawl supporting plate 61 arranged on the second connecting shaft 403, a pawl 6 arranged on the pawl supporting plate 61 and a reverse ratchet 63 arranged on the outer side of the pawl 6, reverse ratchet teeth 631 matched with the pawl 6 are arranged in the reverse ratchet 63, the second sprocket 43 is coaxially and fixedly arranged on the outer side of the reverse ratchet 63, and when the second connecting shaft 403 rotates reversely, the reverse ratchet teeth 631 are engaged with the matched pawl 6 to realize synchronous reverse rotation of the reverse ratchet 63. The two ratchet mechanisms arranged on the left mounting upright post 104 are stressed reversely, so that the movable frame 2 is pushed upwards in a labor-saving manner and is pulled downwards stably; when the moving frame 2 moves downwards, the positive internal meshing ratchet mechanism rotates positively, so that the upper brake disc 51 plays a role in braking, and labor-saving movement under weight balance is realized; when the movable frame 2 moves upwards, the reverse internal meshing ratchet mechanism works reversely, so that the lower brake disc 52 plays a role in braking, and labor-saving movement under weight balance is realized
In this embodiment, the left mounting point and the right mounting point are respectively provided with a mounting ring 7, and both ends of the chain 4 are respectively fixedly mounted on the two mounting rings 7. The stable fixed installation of the two ends of the chain 4 is realized by the mounting ring 7.
In this particular embodiment, the heavy bar 3 is detachably mounted between two support slide bars 101. The heavy rod 3 can be detachably installed, when the electronic screen with different weights is installed on the movable frame 2, the heavy rod 3 with different weights can be replaced according to specific conditions, so that the balance of the gravity is better realized, the stable use of the whole device is ensured, and the universality is good.
In this specific embodiment, opposite end surfaces of the two support slide bars 101 are respectively provided with a shelving seat 8 for shelving installation of the heavy bar 3, the shelving seat 8 comprises a horizontally arranged shelving bottom plate 81, front sides and rear sides of the shelving bottom plate 81 are respectively provided with a positioning wall 82, a positioning groove 83 for embedding installation of the heavy bar 3 is formed between the two positioning walls 82, the two positioning walls 82 are respectively provided with a coaxial locking hole 821 which penetrates through front and rear, the heavy bar 3 is provided with a locking through hole 31 coaxial with the locking hole 821, and the heavy bar 3 is detachably erected and installed between the two support slide bars 101 by sequentially penetrating through the locking hole 821 and the locking through hole 31 through matched detachable locking pieces (not shown in the drawing). The detachable structure for realizing the heavy rod 3 is simple and convenient to install and detach.
In this particular embodiment, the removable retaining member is a mating bolt and retaining nut. Simple structure, convenient installation and disassembly, and low cost.
In this particular embodiment, the front end face of the moving frame 2 is provided with a mounting bracket 22 for mounting the electronic screen. And stable installation of the electronic screen is realized.
In this embodiment, the overall gravity balance of the moving frame 2 with the electronic screen is not realized by the whole heavy rod 3, when the moving frame 2 is static, the whole weight and the heavy rod 3 have a difference value, and the moving frame 2 can have an upward or downward movement trend, and when the moving frame 2 has an upward movement trend, the moving frame mainly works by means of a reverse internal engaged ratchet mechanism, and the difference gravity is balanced by the braking friction force generated by the cooperation and compression of the lower brake disc 52 and the brake disc, so as to ensure that the moving frame 2 does not move upward; on the contrary, when the moving frame 2 has a downward movement tendency, the positive internal engagement ratchet mechanism is operated, and the differential gravity is balanced by the braking friction force generated by the cooperation and compression of the upper brake disc 51 and the brake pad, so as to ensure that the moving frame 2 does not move downward.
Claims (5)
1. The electronic screen vertical lifting device comprises a fixed frame which is vertically arranged and is used for being installed on a wall body, wherein a movable frame used for installing an electronic screen is vertically and slidably arranged on the fixed frame, and the electronic screen vertical lifting device is characterized in that a transmission mechanism used for realizing stable vertical sliding of the movable frame and a balance mechanism used for realizing gravity balance are arranged between the movable frame and the fixed frame, and a brake compensation mechanism is arranged on the transmission mechanism;
The fixed frame comprises two supporting slide bars which are vertically arranged at intervals, the upper ends of the two supporting slide bars are connected through an upper cross bar, a lower cross bar is arranged between the two supporting slide bars, the lower cross bar is arranged below the upper cross bar, the rear end face of the movable frame is provided with a sliding rail matched with the supporting slide bars, and the movable frame is arranged on the fixed frame in a vertically sliding manner through the matching of the sliding rail and the supporting slide bars at corresponding positions;
a left mounting upright post and a right mounting upright post are vertically arranged between the upper cross rod and the lower cross rod, and the left mounting upright post and the right mounting upright post are arranged at left and right intervals;
the movable frame comprises two mounting rods which are vertically arranged at intervals, the rear end face of each mounting rod is provided with a vertical sliding rail which is vertically penetrated up and down, the upper ends and the lower ends of the two mounting rods are respectively connected through a connecting cross rod, and a supporting cross rod is arranged between the two connecting cross rods;
The balance mechanism comprises a heavy rod transversely arranged between the two support slide rods, and the heavy rod is arranged below the lower cross rod;
The transmission mechanism comprises a transmission chain wheel arranged on the movable frame, a first chain wheel, a second chain wheel, a third chain wheel and a fourth chain wheel which are arranged on the fixed frame, wherein the first chain wheel and the second chain wheel are opposite to each other vertically and are rotatably arranged on the front end face of the left mounting upright, the third chain wheel and the fourth chain wheel are opposite to each other vertically and are rotatably arranged on the front end face of the right mounting upright, the rear end face of the supporting cross rod is rotatably provided with the transmission chain wheel, the transmission chain wheel is arranged between the left mounting upright and the right mounting upright, the transmission chain wheel, the first chain wheel, the second chain wheel, the third chain wheel and the fourth chain wheel are connected through a chain, the weight bar is provided with left mounting point and right mounting point for mounting two ends of the chain, the left mounting point is positioned on the left side of the center of the second chain wheel, the right mounting point is positioned on the right side of the center of the fourth chain wheel, the transmission chain wheel is meshed with the third chain wheel from the left side to the right side of the right side, and then the fourth chain wheel is meshed around the right side of the first chain wheel, and then the third chain wheel is meshed around the upper end of the third chain, which is meshed around the upper end of the fourth chain;
The first sprocket is coaxially and fixedly provided with a first connecting shaft, the first connecting shaft is rotatably arranged on the left mounting upright post from front to back, the second sprocket is coaxially and fixedly provided with a second connecting shaft, the second connecting shaft is rotatably arranged on the left mounting upright post from front to back, the third sprocket is coaxially and fixedly provided with a third connecting shaft, the third connecting shaft is rotatably arranged on the right mounting upright post from front to back, the fourth sprocket is coaxially and fixedly provided with a fourth connecting shaft, and the fourth connecting shaft is rotatably arranged on the right mounting upright post from front to back;
The brake compensation mechanism comprises an upper brake disc coaxially and fixedly arranged on the first connecting shaft and a lower brake disc coaxially and fixedly arranged on the second connecting shaft, wherein the upper brake disc is arranged in front of the first sprocket at intervals, the lower brake disc is arranged in front of the second sprocket at intervals, front end surfaces and rear end surfaces of the upper brake disc and the lower brake disc are respectively provided with a front brake disc and a rear brake disc, mounting brackets for mounting the front brake disc and the rear brake disc are respectively arranged on the upper cross rod and the lower cross rod, the rear brake disc is fixedly mounted on the mounting brackets, the two rear brake discs are respectively attached to the rear end surfaces of the upper brake disc and the lower brake disc, and the two front brake discs can be mounted on the mounting brackets at corresponding positions in a front-rear adjustable manner;
the left mounting point and the right mounting point are respectively provided with a mounting ring, and two ends of the chain are respectively and fixedly arranged on the two mounting rings.
2. The electronic screen vertical lifting device as claimed in claim 1, wherein the mounting bracket comprises a supporting rod transversely arranged in a front-rear direction, a front supporting arm and a rear supporting arm are respectively arranged at the front end and the rear end of the lower part of the supporting rod, a front mounting column parallel to the supporting rod is arranged at the lower end of the front supporting arm, a rear mounting column parallel to the supporting rod is arranged at the lower end of the rear supporting arm, a rear brake block is fixedly mounted at the front end of the rear mounting column, an adjusting screw is coaxially and rotatably arranged on the front mounting column from front to rear in a penetrating manner, the front brake block is fixedly mounted at the rear end of the adjusting screw, a vertical connecting column is arranged at the upper end of the supporting rod, and the two mounting brackets are arranged in a mirror symmetry manner up and down, and are respectively fixedly mounted on the upper cross rod and the lower cross rod through the two connecting columns.
3. The vertical lifting device of an electronic screen as claimed in claim 1, wherein a forward inner engagement ratchet mechanism is coaxially and fixedly arranged on the first connecting shaft, the forward inner engagement ratchet mechanism comprises a pawl supporting plate arranged on the first connecting shaft, a pawl arranged on the pawl supporting plate and a forward ratchet wheel arranged outside the pawl, forward ratchet teeth matched with the pawl are arranged in the forward ratchet wheel, the first sprocket is coaxially and fixedly arranged outside the forward ratchet wheel, and when the first connecting shaft rotates forward, the forward ratchet teeth are engaged with the matched pawl to realize synchronous forward rotation of the forward ratchet wheel;
The second connecting shaft is coaxially and fixedly provided with a reverse inner engagement ratchet mechanism, the reverse inner engagement ratchet mechanism comprises a pawl supporting disc arranged on the second connecting shaft, a pawl arranged on the pawl supporting disc and a reverse ratchet wheel arranged on the outer side of the pawl, reverse ratchet wheels matched with the pawl are arranged in the reverse ratchet wheel, the second sprocket is coaxially and fixedly arranged on the outer side of the reverse ratchet wheel, and when the second connecting shaft rotates reversely, the reverse ratchet wheels are engaged with the matched pawl to realize synchronous reverse rotation of the reverse ratchet wheel.
4. The vertical lifting device of claim 1, wherein the heavy bar is detachably installed between the two supporting bars.
5. The vertical lifting device for an electronic screen according to claim 4, wherein two opposite end surfaces of the supporting slide bars are respectively provided with a shelving seat for shelving installation of the heavy bar, the shelving seat comprises a shelving bottom plate which is horizontally arranged, the front side and the rear side of the shelving bottom plate are respectively provided with a positioning wall, a positioning groove for embedding installation of the heavy bar is formed between the two positioning walls, the two positioning walls are respectively provided with a coaxial locking hole which penetrates through the two positioning walls in front and rear, the heavy bar is provided with a locking through hole coaxial with the locking hole, and the heavy bar is detachably erected between the two supporting slide bars by sequentially penetrating through the locking hole and the locking through hole through matched detachable locking pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680116.XA CN111853443B (en) | 2020-07-15 | 2020-07-15 | Vertical lifting device for electronic screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010680116.XA CN111853443B (en) | 2020-07-15 | 2020-07-15 | Vertical lifting device for electronic screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111853443A CN111853443A (en) | 2020-10-30 |
| CN111853443B true CN111853443B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010680116.XA Active CN111853443B (en) | 2020-07-15 | 2020-07-15 | Vertical lifting device for electronic screen |
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| Country | Link |
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| CN (1) | CN111853443B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001061580A (en) * | 1999-08-25 | 2001-03-13 | Kugiyasu:Kk | Vertically movable blackboard device |
| JP2009084901A (en) * | 2007-10-01 | 2009-04-23 | 瑞樹 ▲たか▼岡 | Lifting workbench apparatus |
| CN103669939A (en) * | 2013-11-28 | 2014-03-26 | 江苏启良停车设备有限公司 | Simple lifting parking equipment |
| CN106272324A (en) * | 2016-09-30 | 2017-01-04 | 东莞市联洲知识产权运营管理有限公司 | A kind of graduated tile mobile device with locking device |
| CN212408105U (en) * | 2020-07-15 | 2021-01-26 | 宁波大学 | Vertical lifting device for electronic screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6819879B2 (en) * | 2017-08-08 | 2021-01-27 | 株式会社ダイフク | Work support device that can be raised and lowered |
-
2020
- 2020-07-15 CN CN202010680116.XA patent/CN111853443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001061580A (en) * | 1999-08-25 | 2001-03-13 | Kugiyasu:Kk | Vertically movable blackboard device |
| JP2009084901A (en) * | 2007-10-01 | 2009-04-23 | 瑞樹 ▲たか▼岡 | Lifting workbench apparatus |
| CN103669939A (en) * | 2013-11-28 | 2014-03-26 | 江苏启良停车设备有限公司 | Simple lifting parking equipment |
| CN106272324A (en) * | 2016-09-30 | 2017-01-04 | 东莞市联洲知识产权运营管理有限公司 | A kind of graduated tile mobile device with locking device |
| CN212408105U (en) * | 2020-07-15 | 2021-01-26 | 宁波大学 | Vertical lifting device for electronic screen |
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| Publication number | Publication date |
|---|---|
| CN111853443A (en) | 2020-10-30 |
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