CN115373207A - Meeting place lifting opening and closing device - Google Patents
Meeting place lifting opening and closing device Download PDFInfo
- Publication number
- CN115373207A CN115373207A CN202211175902.XA CN202211175902A CN115373207A CN 115373207 A CN115373207 A CN 115373207A CN 202211175902 A CN202211175902 A CN 202211175902A CN 115373207 A CN115373207 A CN 115373207A
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- China
- Prior art keywords
- projection curtain
- meeting place
- box body
- lifting
- closing device
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- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 6
- 238000000429 assembly Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses a meeting place lifting opening and closing device, which relates to the technical field of lifting opening and closing devices and comprises a base and a projection curtain, wherein the inner part of the base is hollow, sleeves are fixedly arranged on two sides of the top end of the base, lifting assemblies are arranged in the sleeves, the top ends of the two lifting assemblies penetrate through the sleeves to be connected with a same mounting plate, an opening and closing assembly for opening and closing the projection curtain is arranged on one side of the mounting plate, the opening and closing assembly is fixedly connected with the mounting plate in an inserting mode through an inserting assembly, and a cleaning assembly for cleaning the projection curtain is arranged on the inner side of the opening and closing assembly and is positioned on the front face of the projection curtain. The projection screen is reasonable in design structure, the rotating shaft can drive the two bevel gears to rotate simultaneously, the bevel gear one rotation drives the bevel gear two meshed with the bevel gear to rotate, the bevel gear two rotation drives the screw rod to rotate, the screw rod autorotation can drive the lifting cylinder in threaded connection with the screw rod to move upwards or downwards along the screw rod, and the position of the projection screen can be adjusted through the movement of the lifting cylinder.
Description
Technical Field
The invention relates to the field of lifting devices, in particular to a meeting place lifting opening and closing device.
Background
The meeting place refers to a meeting or a meeting place, the existing professional meeting places usually need to use a projection curtain to project contents required to be explained or shown in some meetings to audiences, and the existing projection curtain is usually directly placed at a proper position in the meeting place through a support.
But current projection curtain support is simple structure comparatively usually, can only play the effect that the expansion was put to the projection curtain, can not realize going up and down and the function that opens and shuts to the projection curtain, and the projection curtain can pile up some dusts at the use rear surface, and current general need be artificial cleans through the rag, and the operation is comparatively inconvenient. Therefore, the meeting place lifting opening and closing device is provided to solve the problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a meeting place lifting opening and closing device which can clean dust on projection cloth.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a meeting place lifting opening and closing device which comprises a base and a projection curtain, wherein the interior of the base is hollow, sleeves are fixedly arranged on two sides of the top end of the base, lifting assemblies are arranged in the sleeves, the top ends of the two lifting assemblies penetrate through the sleeves to be connected with a same mounting plate, an opening and closing assembly for opening and closing the projection curtain is arranged on one side of the mounting plate, the opening and closing assembly is fixedly connected with the mounting plate in an inserting mode through an inserting assembly, a cleaning assembly for cleaning the projection curtain is arranged on the inner side of the opening and closing assembly, which is positioned on the front face of the projection curtain, and a limiting assembly for compressing and limiting the projection curtain is arranged on the inner side of the opening and closing assembly, which is positioned on the top of the projection curtain.
In a preferred technical scheme of the invention, the lifting assembly comprises a rotating shaft, the rotating shaft is rotatably arranged in a base, the outer parts of two ends of the rotating shaft are fixedly provided with a first bevel gear, one side of the first bevel gear is meshed with a second bevel gear, the bottom ends of two pairs of the bevel gears are fixedly provided with screw rods, the top ends of the screw rods penetrate through the base and are rotatably connected with the base, the tops of the screw rods are in threaded connection with a lifting cylinder in a matching manner, the lifting cylinder is in sliding arrangement in a sleeve in a matching manner, and the top ends of the lifting cylinder are fixedly connected with an installation plate.
In a preferred technical scheme of the invention, a driven belt wheel is fixedly arranged in the middle of the rotating shaft, a driving belt wheel is arranged at the top of the driven belt wheel, the driving belt wheel is positioned in a case arranged at the top end of the base, the driving belt wheel and the driven belt wheel are in transmission connection through a belt, and a driving motor for driving the driving belt wheel is arranged in the case.
In a preferred technical scheme of the invention, the opening and closing assembly comprises a box body with an open bottom end, a winding roller is arranged in the box body, the projection screen is wound outside the winding roller, and a speed reduction motor for driving the winding roller is arranged on one side of the box body.
In a preferred technical scheme of the invention, lantern rings are fixedly arranged at two ends of the back side of the projection curtain, the two lantern rings are respectively arranged outside the two sleeves in a sliding manner, a group of balancing weights are equidistantly arranged on the projection curtain at the two lantern ring assemblies, the bottom ends of the balancing weights are in threaded connection with fixing columns, and balancing balls are fixedly arranged at the bottom ends of the fixing columns.
In a preferred technical scheme of the invention, the inserting component comprises two inserting columns which are respectively fixedly arranged at two ends of the back side of the box body, the other ends of the two inserting columns are respectively matched and inserted in a slot arranged on the mounting plate, the top ends of the inserting columns are matched and inserted with inserting rods, and the inserting rods are arranged in circular slots arranged in the mounting plate.
In a preferred technical scheme of the invention, the top ends of the two insertion rods penetrate through the circular groove and are fixedly provided with the same limiting plate, the limiting plates are arranged in the limiting grooves formed in the top ends of the mounting plates in a matching manner, the top ends of the limiting plates are fixedly provided with the pull blocks, the outsides of the insertion rods are sleeved with the pushing springs in a matching manner, and two ends of each pushing spring are fixedly connected with the inner wall of the circular groove and the cushion blocks arranged outside the insertion rods respectively.
In a preferred technical scheme of the invention, the cleaning assembly comprises a fixing plate, the fixing plate is fixedly arranged on the inner side of the box body, a working groove is formed in one side of the fixing plate, a brush holder is arranged in the working groove in a matched sliding manner, a cleaning brush is arranged on the front side of the brush holder, extension springs are arranged at two ends of the back side of the brush holder, one end of each extension spring is fixedly connected with the fixing plate, a threaded sleeve is fixedly arranged in the middle of the back side of the brush holder, an adjusting screw rod is connected in the threaded sleeve in a threaded manner, and one end of the adjusting screw rod penetrates through the box body and is arranged outside the box body.
In a preferred technical scheme of the invention, the limiting assembly comprises a pressing block in an arc convex shape, the pressing block is arranged in the winding roller in a matching manner, a movable block is fixedly arranged at the top end of the pressing block, return springs are fixedly arranged on two sides of the top end of the movable block, one end of each return spring is fixedly connected with the box body, an eccentric wheel is arranged in the middle of the top end of the movable block, a servo motor for driving the eccentric wheel is arranged at the top of the inner cavity of the box body, a rubber pad is arranged on the contact surface of the top end of the movable block and the eccentric wheel, an inverted T-shaped clamping block is arranged in the middle of the bottom end of the rubber pad, and the clamping block is arranged in a clamping groove formed in the movable block in a matching manner.
The beneficial effects of the invention are as follows:
according to the meeting place lifting opening and closing device provided by the invention, the rotating shaft can drive the two bevel gears to rotate together, the bevel gear one drives the bevel gear two meshed with the bevel gear to rotate, the bevel gear two rotates to drive the screw rod to rotate, the screw rod can drive the lifting cylinder in threaded connection with the screw rod to move upwards or downwards along the screw rod by self rotation of the screw rod, and the position of the projection screen can be adjusted by the movement of the lifting cylinder.
According to the invention, the adjusting screw is screwed, the adjusting screw rotates to drive the threaded sleeve in threaded connection with the adjusting screw to move along the adjusting screw, the threaded sleeve moves to drive the brush holder to move in the fixed plate, the brush holder moves to drive the cleaning brush to move until the cleaning brush is adjusted to be in contact with the projection curtain, and when the projection curtain is rolled after being used, dust on the surface of the projection curtain can be cleaned through the cleaning brush.
When the projection screen is required to be placed down, the driving motor works to continuously drive the eccentric wheel to rotate for a half circle, the eccentric wheel drives the movable block to move downwards, the movable block moves to drive the pressing block to move, the projection screen can be pressed through the pressing block, the position of the projection screen can be pressed and limited, the eccentric wheel is driven to rotate for a half circle by the driving motor, and the pressing block can be restored to the original position under the elastic action of the return spring, so that the pressure on the projection screen can be removed.
Drawings
FIG. 1 is a schematic view of a connection structure of a base and a sleeve of a meeting place lifting opening and closing device according to the present invention;
FIG. 2 is a schematic view of a lifting assembly of a meeting place lifting opening and closing device according to the present invention;
FIG. 3 is a schematic structural diagram of the positions of a cleaning assembly, a limiting assembly and a projection screen of the meeting place lifting opening and closing device of the invention;
FIG. 4 is a schematic view of an opening/closing assembly of the meeting place lifting/closing device according to the present invention;
FIG. 5 is a schematic view of a backside structure of a projection screen of a meeting place lifting and closing device according to the present invention;
FIG. 6 is a schematic structural diagram of a plug-in assembly of a meeting place lifting device according to the present invention;
FIG. 7 is a schematic structural view of a cleaning assembly of the meeting place lifting opening and closing device of the present invention;
fig. 8 is a schematic structural view of a limiting assembly of the meeting place lifting opening and closing device of the present invention.
In the figure:
1-a base; 2-a sleeve; 3-a lifting assembly; 301-a rotating shaft; 302-bevel gear one; 303-bevel gear two; 304-a screw rod; 305-lifting the cylinder; 306-a driven pulley; 307-a driving pulley; 308-a chassis; 309-belt; 3010-drive motor; 4-mounting a plate; 5-projection screen; 6-an opening and closing assembly; 601-a cartridge; 602-a wind-up roll; 603-a reduction motor; 604-a collar; 605-a weight block; 606-fixing columns; 607-counterweight ball; 7-a plug-in assembly; 701-inserting a column; 702-a slot; 703-an insert rod; 704-limiting plate; 705-pulling the block; 706-a push spring; 707-cushion block; 8-a sweeping component; 801-a fixing plate; 802-a brush holder; 803-cleaning brush; 804-a tension spring; 805-thread bush; 806-adjusting screw; 9-a limiting component; 901-briquetting; 902-active block; 903-a return spring; 904-eccentric wheel; 905-a servo motor; 906-rubber pad; 907-fixture block.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-8, the embodiment provides a meeting place lifting opening and closing device, including inside hollow base 1 and projection curtain 5, the both sides on base 1 top all are fixed and are provided with sleeve 2, be provided with lifting unit 3 in the sleeve 2, the top of two lifting unit 3 is passed sleeve 2 and is connected with same mounting panel 4, one side of mounting panel 4 is provided with the subassembly 6 that opens and shuts projection curtain 5, subassembly 6 that opens and shuts is pegged graft fixedly with mounting panel 4 through grafting subassembly 7, and the front that the inboard of subassembly 6 that opens and shuts is located projection curtain 5 is provided with the subassembly 8 that cleans projection curtain 5, the inboard top that is located projection curtain 5 that opens and shuts subassembly 6 is provided with compresses tightly spacing subassembly 9 that compresses tightly projection curtain 5.
Lifting unit 3 includes pivot 301, pivot 301 rotates and sets up in base 1, and the outside at pivot 301 both ends is all fixed and is provided with bevel gear 302, one side of bevel gear 302 meshes mutually and is provided with bevel gear two 303, bevel gear two 303 are to the bottom mounting be provided with lead screw 304, base 1 is passed and is rotated with base 1 to the top of lead screw 304 and be connected, and the top of lead screw 304 matches threaded connection and has a lifting section of thick bamboo 305, a lifting section of thick bamboo 305 matches and slides the setting in sleeve 2, and the top and the mounting panel 4 fixed connection of a lifting section of thick bamboo 305.
The rotating shaft 301 rotates to drive the two first bevel gears 302 to rotate simultaneously, the first bevel gears 302 rotate to drive the second bevel gears 303 meshed with the first bevel gears to rotate, the second bevel gears 303 rotate to drive the screw rods 304 to rotate, the screw rods 304 rotate to drive the lifting cylinders 305 in threaded connection with the screw rods 304 to move upwards or downwards along the screw rods 304, and the position of the projection curtain 5 can be adjusted through the movement of the lifting cylinders 305.
The middle part of the rotating shaft 301 is fixedly provided with a driven pulley 306, the top of the driven pulley 306 is provided with a driving pulley 307, the driving pulley 307 is positioned in a case 308 arranged at the top end of the base 1, the driving pulley 307 and the driven pulley 306 are in transmission connection through a belt 309, and a driving motor 3010 for driving the driving pulley 307 is arranged in the case 308.
The driving motor 3010 can drive the driving pulley 307 to rotate, and the driven pulley 306 can be driven to rotate at the same time through the transmission action of the belt 309, and the rotation of the driven pulley 306 can realize the rotation of the rotating shaft 301.
The opening and closing assembly 6 comprises a box body 601 with an open bottom end, a winding roller 602 is arranged in the box body 601, the projection curtain 5 is wound outside the winding roller 602, and a speed reduction motor 603 for driving the winding roller 602 is arranged on one side of the box body 601.
The reduction motor 603 can drive the wind-up roll 602 to rotate, and the projection curtain 5 can be collected or placed through the forward and reverse rotation of the reduction motor 603.
The dorsal both ends of projection curtain 5 are all fixed and are provided with the lantern ring 604, and two lantern rings 604 slide respectively and set up in the outside of two sleeves 2, and lie in two lantern ring 604 subassemblies equidistance on the projection curtain 5 and be provided with a set of balancing weight 605, and the bottom threaded connection of balancing weight 605 has fixed column 606, and the bottom mounting of fixed column 606 is provided with counterweight ball 607.
Establish respectively through establishing two lantern rings 604 in the outside of two sleeves 2, can play limiting displacement to the bottom of projection curtain 5, avoid projection curtain 5 the swing by a wide margin to appear under the blowing of external force or high wind, balancing weight 605 through being equipped with, can play the effect of pulling to projection curtain 5, when transferring projection curtain 5, the action of gravity through balancing weight 605 can drive projection curtain 5 and fall down fast, balancing weight ball 607 through being equipped with, if balancing weight 605's weight is less, can connect the bottom at balancing weight 605 through fixed column 606 and balancing weight 605 and increase balancing weight ball 607, can increase balancing weight 605's weight.
The inserting component 7 comprises two inserting columns 701, the two inserting columns 701 are respectively fixedly arranged at two ends of the back side of the box body 601, the other ends of the two inserting columns 701 are respectively matched and inserted into a slot 702 formed in the mounting plate 4, the top ends of the inserting columns 701 are matched and inserted with inserting rods 703, and the inserting rods 703 are arranged in circular slots formed in the mounting plate 4.
The inserting rod 703 is matched with the inserting column 701 for inserting, the inserting column 701 can be limited in the inserting groove 702, and then the box body 601 and the mounting plate 4 can be fixedly inserted.
The top ends of the two insertion rods 703 penetrate through the circular groove and are fixedly provided with the same limiting plate 704, the limiting plate 704 is arranged in a limiting groove formed in the top end of the mounting plate 4 in a matched mode, the top end of the limiting plate 704 is fixedly provided with a pull block 705, the outer portion of the insertion rods 703 is sleeved with a pushing spring 706 in a matched mode, and the two ends of the pushing spring 706 are fixedly connected with the inner wall of the circular groove and a cushion block 707 arranged outside the insertion rods 703 respectively.
Through the elastic action of pushing spring 706, can promote inserted bar 703 and closely peg graft with inserted column 701, can improve the fastness of being connected between inserted bar 703 and the inserted column 701, and then can improve the fastness of being connected between box body 601 and the mounting panel 4, and when needs are dismantled box body 601, only need the pulling piece 705 to drive limiting plate 704 and remove, limiting plate 704 removes and can drive two inserted bars 703 emergence motions simultaneously, with inserted bar 703 with insert column 701 separate, and then can realize dismantling box body 601.
The adjusting screw 806 is screwed, the adjusting screw 806 rotates to drive the thread sleeve 805 in threaded connection with the adjusting screw 806 to move along the adjusting screw 806, the thread sleeve 805 moves to drive the brush holder 802 to move in the fixing plate 801, the brush holder 802 moves to drive the cleaning brush 803 to move until the cleaning brush 803 is adjusted to be in contact with the projection curtain 5, and when the projection curtain 5 is rolled after being used, dust on the surface of the projection curtain 5 can be cleaned through the cleaning brush 803.
When accomplishing the rolling or transferring completion back to projection curtain 5, servo motor 905 work drives eccentric wheel 904 and rotates the half-cycle, eccentric wheel 904 rotates the process of half-cycle and can promote movable block 902 downstream, movable block 902 removes the motion of promotion briquetting 901, can compress tightly projection curtain 5 through briquetting 901, and then can realize compressing tightly spacingly to the position of projection curtain 5, the process of transferring is carried out to projection curtain 5 when needs, servo motor 905 work continues to drive eccentric wheel 904 and rotates the half-cycle, at this moment can make briquetting 901 resume to the normal position under reset spring 903's elastic action, and then can remove the pressure to projection curtain 5.
When the projection curtain 5 needs to be used, the base 1 can be placed at a proper position in a meeting place, then the reduction motor 603 works to drive the wind-up roll 602 to rotate, the projection curtain 5 is placed, at this time, the projection curtain 5 can rapidly fall along the two sleeves 2 through the gravity of the counterweight 605, the driving motor 3010 works to drive the rotating shaft 301 to rotate, the rotating shaft 301 rotates to drive the two bevel gears 302 to rotate simultaneously, the bevel gears 302 rotate to drive the bevel gears 303 meshed with the bevel gears to rotate, the bevel gears 303 rotate to drive the screw rod 304 to rotate, the screw rod 304 rotates to drive the lifting cylinder 305 in threaded connection with the screw rod 304 to move upwards or downwards, the position height of the projection curtain 5 can be adjusted through the movement of the lifting cylinder 305, when the projection curtain 5 is used and rolled, the reduction motor 603 performs rolling, at this time, the dust on the surface of the projection curtain 5 can be cleaned through the cleaning brush 803 provided, the servo motor 905 works to drive the eccentric wheel 904 to rotate for half-circle after the rolling, the movable block 904 is pushed to move downwards, the movable block 902 can press the position of the projection curtain 5 to press the eccentric wheel to compress the projection curtain 5, and the position of the eccentric wheel 901 can be pressed and the eccentric wheel 901 to realize the projection curtain 5.
Other techniques of the present embodiment employ existing techniques.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not intended to be limited to the specific embodiments disclosed herein, but other embodiments falling within the scope of the appended claims are intended to be within the scope of the present invention.
Claims (9)
1. The utility model provides a meeting place goes up and down to open and shut device, includes that inside is hollow base (1) and projection curtain (5), its characterized in that: the both sides on base (1) top are all fixed and are provided with sleeve (2), be provided with lifting unit (3), two in sleeve (2) the top of lifting unit (3) is passed sleeve (2) and is connected with same mounting panel (4), one side of mounting panel (4) is provided with subassembly (6) that opens and shuts of going on projection curtain (5), subassembly (6) that opens and shuts are pegged graft fixedly through grafting subassembly (7) and mounting panel (4), just the front that the inboard that opens and shuts subassembly (6) is located projection curtain (5) is provided with cleans subassembly (8) that cleans projection curtain (5), the top that the inboard that opens and shuts subassembly (6) is located projection curtain (5) is provided with and compresses tightly spacing subassembly (9) spacing to projection curtain (5).
2. A meeting place lifting opening and closing device according to claim 1, characterized in that: lifting unit (3) are including pivot (301), pivot (301) are rotated and are set up in base (1), just the outside at pivot (301) both ends is all fixed and is provided with bevel gear (302), the meshing of one side looks of bevel gear (302) is provided with bevel gear two (303), the bottom mounting that bevel gear two (303) are right is provided with lead screw (304), base (1) is passed and is rotated with base (1) on the top of lead screw (304) and be connected, just the top of lead screw (304) cooperatees threaded connection and has a lifting section of thick bamboo (305), a lifting section of thick bamboo (305) cooperate and slide the setting in sleeve (2), just the top and mounting panel (4) fixed connection of a lifting section of thick bamboo (305).
3. A meeting place lifting opening and closing device according to claim 2, characterized in that: the middle of the rotating shaft (301) is fixedly provided with a driven belt wheel (306), the top of the driven belt wheel (306) is provided with a driving belt wheel (307), the driving belt wheel (307) is located in a machine box (308) arranged at the top end of the base (1), the driving belt wheel (307) is in transmission connection with the driven belt wheel (306) through a belt (309), and a driving motor (3010) for driving the driving belt wheel (307) is arranged in the machine box (308).
4. A meeting place lifting opening and closing device according to claim 1, characterized in that: subassembly (6) open and shut includes that the bottom is open box body (601), be provided with wind-up roll (602) in box body (601), projection curtain (5) are convoluteed in the outside of wind-up roll (602), one side of box body (601) is provided with carries out driven gear motor (603) to wind-up roll (602).
5. A meeting place lifting opening and closing device according to claim 4, characterized in that: both ends of the back side of the projection curtain (5) are fixedly provided with lantern rings (604), the lantern rings (604) are arranged outside the two sleeves (2) in a sliding mode respectively, a group of balancing weights (605) are arranged on the projection curtain (5) in the two lantern ring (604) assemblies at equal intervals, the bottom ends of the balancing weights (605) are in threaded connection with fixing columns (606), and balancing weights (607) are fixedly arranged at the bottom ends of the fixing columns (606).
6. A meeting place lifting opening and closing device according to claim 4, characterized in that: the inserting assembly (7) comprises two inserting columns (701), the two inserting columns (701) are fixedly arranged at two ends of the back side of the box body (601) respectively, the other ends of the inserting columns (701) are matched and inserted into inserting grooves (702) formed in the mounting plate (4) respectively, inserting rods (703) are matched and inserted into the top ends of the inserting columns (701), and the inserting rods (703) are arranged in circular grooves formed in the mounting plate (4).
7. A meeting place lifting opening and closing device according to claim 6, characterized in that: two the top of inserted bar (703) passes the fixed same limiting plate (704) that is provided with of circular slot, limiting plate (704) cooperate to set up the limiting groove of seting up on mounting panel (4) top, just the fixed piece (705) that draws that is provided with in top of limiting plate (704), the outside cooperation cover of inserted bar (703) is equipped with and promotes spring (706), promote spring (706) both ends respectively with the inner wall of circular slot and the outside cushion (707) fixed connection that is equipped with of inserted bar (703).
8. A meeting place lifting opening and closing device according to claim 4, characterized in that: cleaning subassembly (8) including fixed plate (801), fixed plate (801) are fixed to be set up in the inboard of box body (601), just work groove has been seted up to one side of fixed plate (801), it is provided with brush seat (802) to cooperate the slip in the work groove, the front of brush seat (802) is provided with cleaning brush (803), brush seat (802) dorsal both ends all are provided with extension spring (804), the one end and fixed plate (801) fixed connection of extension spring (804), brush seat (802) dorsal middle part is fixed and is provided with thread bush (805), thread bush (805) female connection has adjusting screw (806), the outside of box body (601) is arranged in to the one end of adjusting screw (806) is passed box body (601).
9. A meeting place lifting opening and closing device according to claim 4, characterized in that: the limiting assembly (9) comprises a pressing block (901) in an arc convex shape, the pressing block (901) is arranged in a winding roller (602) in a matched mode, a movable block (902) is fixedly arranged at the top end of the pressing block (901), reset springs (903) are fixedly arranged on two sides of the top end of the movable block (902), one end of each reset spring (903) is fixedly connected with the box body (601), an eccentric wheel (904) is arranged in the middle of the top end of the movable block (902), a servo motor (905) for driving the eccentric wheel (904) is arranged at the top of the inner cavity of the box body (601), a rubber pad (906) is arranged on the contact surface of the top end of the movable block (902) and the eccentric wheel (904), a clamping block (907) in an inverted T shape is arranged in the middle of the bottom end of the rubber pad (906), and the clamping block (907) is arranged in a clamping groove formed in the movable block (902) in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211175902.XA CN115373207B (en) | 2022-09-26 | 2022-09-26 | Lifting opening and closing device for meeting place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211175902.XA CN115373207B (en) | 2022-09-26 | 2022-09-26 | Lifting opening and closing device for meeting place |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115373207A true CN115373207A (en) | 2022-11-22 |
| CN115373207B CN115373207B (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211175902.XA Active CN115373207B (en) | 2022-09-26 | 2022-09-26 | Lifting opening and closing device for meeting place |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115373207B (en) |
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| CN208766454U (en) * | 2018-08-28 | 2019-04-19 | 洛阳米可文化传媒有限公司 | A kind of meeting projection arrangement |
| CN209070297U (en) * | 2018-11-29 | 2019-07-05 | 咸阳师范学院 | A kind of VR equipment projection screen |
| CN209684124U (en) * | 2019-01-11 | 2019-11-26 | 云南友日久包装实业有限公司 | A kind of tape alice apparatus for shaping |
| CN212905886U (en) * | 2020-09-14 | 2021-04-06 | 一展天下(北京)国际会展有限公司 | Convenient to use's projection curtain |
| CN213339162U (en) * | 2020-08-20 | 2021-06-01 | 上海耶里夏丽实业有限公司 | Food and beverage management teaching mode |
| CN214098095U (en) * | 2021-02-02 | 2021-08-31 | 邵阳学院 | Think political affairs teaching with projection curtain structure |
| CN214098101U (en) * | 2021-01-20 | 2021-08-31 | 南京工业职业技术大学 | A can roll up projection curtain for animation design |
| CN214846213U (en) * | 2021-03-18 | 2021-11-23 | 安徽国耀通信科技有限公司 | Anti-swing projection curtain capable of stably lifting |
| CN216768931U (en) * | 2021-10-19 | 2022-06-17 | 深圳市瀚仕达显示设备有限公司 | Multifunctional liquid crystal display with lifting structure |
| CN114859645A (en) * | 2022-05-13 | 2022-08-05 | 南京林业大学 | Multimedia projection curtain with cleaning function |
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2022
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| CN213339162U (en) * | 2020-08-20 | 2021-06-01 | 上海耶里夏丽实业有限公司 | Food and beverage management teaching mode |
| CN212905886U (en) * | 2020-09-14 | 2021-04-06 | 一展天下(北京)国际会展有限公司 | Convenient to use's projection curtain |
| CN214098101U (en) * | 2021-01-20 | 2021-08-31 | 南京工业职业技术大学 | A can roll up projection curtain for animation design |
| CN214098095U (en) * | 2021-02-02 | 2021-08-31 | 邵阳学院 | Think political affairs teaching with projection curtain structure |
| CN214846213U (en) * | 2021-03-18 | 2021-11-23 | 安徽国耀通信科技有限公司 | Anti-swing projection curtain capable of stably lifting |
| CN216768931U (en) * | 2021-10-19 | 2022-06-17 | 深圳市瀚仕达显示设备有限公司 | Multifunctional liquid crystal display with lifting structure |
| CN114859645A (en) * | 2022-05-13 | 2022-08-05 | 南京林业大学 | Multimedia projection curtain with cleaning function |
Also Published As
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| CN115373207B (en) | 2024-06-14 |
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