CN109143760B - Large-sized electric curtain without size limitation - Google Patents
Large-sized electric curtain without size limitation Download PDFInfo
- Publication number
- CN109143760B CN109143760B CN201710504078.0A CN201710504078A CN109143760B CN 109143760 B CN109143760 B CN 109143760B CN 201710504078 A CN201710504078 A CN 201710504078A CN 109143760 B CN109143760 B CN 109143760B
- Authority
- CN
- China
- Prior art keywords
- screw
- shaft
- turnbuckle
- bearing
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 42
- 239000010959 steel Substances 0.000 claims description 42
- 230000006698 induction Effects 0.000 claims description 11
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000001174 ascending effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 21
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000007665 sagging Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
Abstract
The invention discloses a large-sized electric curtain without size limitation, which comprises a frame, a curtain surface, a transmission mechanism, a guide mechanism and a counterweight mechanism, wherein the whole structure adopts a sectional assembly structure, the transportation and the field installation are convenient, and the auxiliary structure is used for preventing the sagging deformation of a main shaft and a guide shaft due to overlong and self weight, so that the curtain surface is uneven, and the electric curtain with any length and size can be realized.
Description
Technical Field
The present invention relates to a projection screen, and more particularly, to a large-sized electric screen without size limitation.
Background
When the existing electric curtain reaches a certain length, the scroll is easy to sag and deform due to the weight of the scroll, so that the curtain surface is uneven, larger size cannot be achieved, and the electric curtain is limited by the size.
Disclosure of Invention
The purpose of the invention is that: the large-sized electric curtain without size limitation is provided, and the defects in the prior art are overcome by adopting a mode of combining a frame, a curtain surface, a transmission mechanism, a guide mechanism, a counterweight mechanism and a sectional structure. In order to achieve the above object, the technical scheme of the present invention is as follows: a large-scale electric curtain without size limitation comprises a frame, a curtain surface, a transmission mechanism, a guide mechanism and a counterweight mechanism; the frame comprises: the first frame, the first screw, the second frame, the second screw and the third frame; the curtain surface is provided with a protruding part for detecting by the descending induction switch, and the lower end of the curtain surface is provided with a closed cavity; the transmission mechanism comprises: the main shaft left support seat, the third screw, the first bearing, the chain inductive switch, the chain, the driven gear, the driving gear, the motor, the fourth screw, the fifth screw, the main shaft left fixed shaft, the first steel wire rope left fixed seat, the first main shaft, the sixth screw, the seventh screw, the first main shaft connecting shaft, the second main shaft, the eighth screw, the ninth screw, the second main shaft connecting shaft, the third main shaft, the universal joint, the main shaft right fixed shaft, the tenth screw, the second bearing, the steel wire locking rod, the eleventh screw, the main shaft right support seat, the third bearing, the twelfth screw, the electric push rod, the stop bolt, the first steel wire rope, the ascending travel switch, the third main shaft, A descent induction switch and a ninth bearing; the guide mechanism comprises: thirteenth screw, fourth bearing, left supporting seat of guide shaft, left fixed shaft of guide shaft, fourteenth screw, first guide shaft, fifteenth screw, first guide seat, fifth bearing, sixteenth screw, first guide shaft connecting shaft, seventeenth screw, second guide shaft, eighteenth screw, second guide seat, sixth bearing, nineteenth screw, second guide shaft connecting shaft, twentieth screw, third guide shaft, twenty first screw, third guide seat, seventh bearing, right fixed shaft of guide shaft, right supporting seat of guide shaft, twenty second screw, eighth bearing, twenty third screw; the counterweight mechanism comprises: twenty-fourth screw, first front weight bar, first retaining ring, second wire rope, first turnbuckle holder, twenty-fifth screw, second turnbuckle holder, second turnbuckle, left holder, twenty-sixth screw, third turnbuckle holder, third turnbuckle, fourth wire rope, third retaining ring, third wire rope, first rear weight bar, first middle weight bar, second retaining ring, second rear weight bar, second front weight bar, second middle weight bar, third rear weight bar, third middle weight bar, third front weight bar, fourth turnbuckle, fifth turnbuckle, sixth turnbuckle, Twenty-seventh screw, fourth turnbuckle fixing seat, twenty-eighth screw, right fixing seat, sixth turnbuckle fixing seat and fifth turnbuckle fixing seat; the large electric curtain without size limitation has the beneficial effects that: (1) The frame, the main shaft, the guide shaft and the counterweight bars all adopt sectional structures, so that the electric curtain is convenient to transport and rapidly install on site, and can be increased or decreased in sections according to different sizes of the electric curtain; (2) Besides the fixing of the main shafts by connecting shafts and screws, the middle part of each main shaft is penetrated by a steel wire rope for integral tensioning connection, and the integral strength of the main shafts is increased by adjusting the tensioning steel wire rope to correct the natural sagging caused by the too long main shafts and the gravity of the main shafts, so that the flatness of the curtain surface is ensured; (3) The guide shaft can rotate along with the friction force of the curtain surface, the curtain surface passes through the guide shaft and then carries out secondary correction on flatness under the action of traction force of the counterweight bar, a guide seat is arranged below the guide shaft, a bearing on the guide seat supports the guide shaft in a V shape, so that the guide shaft rotates together while rotating, friction is reduced, and natural sagging caused by too long guide shaft and self gravity is corrected by adjusting the position of the guide seat, thereby ensuring the flatness of the curtain surface; (4) The front, rear and lower directions of the counterweight bar below the curtain surface are respectively tensioned and straightened by using a steel wire rope, a fixed ring and turnbuckle screws, and the integral straightness of the counterweight bar is corrected, so that the curtain surface is prevented from being uneven due to natural sagging and bending caused by the fact that the counterweight bar is too long and self gravity; (5) A protruding part is arranged above the curtain surface, when the descending induction switch senses the protruding part, the motor controls the main shaft to stop rotating, and the curtain surface stops descending at the moment, so that the use safety is ensured; (6) The main shaft left side supporting seat is provided with a chain inductive switch for detecting a chain, when the chain breaks, the inductive switch sends a signal to a control system, the control system controls a motor to stop rotating, and meanwhile, an electric push rod pushes a stop bolt forwards, and the stop bolt is inserted into a space formed by four second bearings to prevent the main shaft from continuing to rotate, so that the use safety is ensured. The front end of the stop bolt is provided with a bearing, so that the condition that the stop bolt is dead against the second bearing in a straight line state just when moving forwards is avoided, and the stop bolt can be inserted; (7) The first frame is provided with a lifting travel switch, when the left fixing seat is lifted to contact with the lifting travel switch, the switch sends a signal to the control system, the control system controls the motor to stop rotating, and the curtain surface stops lifting, so that the use safety is ensured.
Drawings
Fig. 1 is a perspective view of a large motorized screen without size limitation according to the present invention.
Fig. 2 is an enlarged view of a portion a of a large electric screen without size limitation according to the present invention.
Fig. 3 is a frame construction diagram of a large-sized electric screen without size limitation according to the present invention.
Fig. 4 is a screen surface structure view of a large electric screen without size limitation according to the present invention.
Fig. 5 is an enlarged view of the B portion of a large electric screen without size limitation according to the present invention.
Fig. 6 is an enlarged view of the C portion of a large electric screen without size limitation according to the present invention.
Fig. 7 is a block diagram of a driving mechanism of a large-sized electric screen without size limitation according to the present invention.
Fig. 8 is a block diagram of a guide mechanism of a large-sized electric screen without size limitation according to the present invention.
Fig. 9 is a block diagram of a counterweight mechanism for a large-sized motorized screen without size limitation according to the invention.
Fig. 10 is a front view of a large motorized screen without size limitation according to the present invention.
Fig. 11 is an enlarged view of the D portion of a large electric screen without size limitation according to the present invention.
Fig. 12 is a left side view of a large motorized screen of the present invention without size limitations.
Fig. 13 is a right side view of a large motorized screen without size limitation according to the present invention.
Fig. 14 is a left side internal structural view of a large electric screen without size limitation according to the present invention.
Fig. 15 is a right side internal structural view of a large electric screen without size limitation according to the present invention.
Fig. 16 is a block diagram of a guide seat of a large-sized motorized screen without size limitation according to the present invention.
FIG. 17 is a block diagram of a stop pin of a large motorized screen without size limitations according to the present invention.
Fig. 18 is a main shaft internal structure view of a large-sized electric curtain without size limitation according to the present invention.
In the figure:
1. a first frame; 2. A first screw; 3. a second frame; 4. a second screw; 5. a third frame; 6. a curtain surface; 7. a left supporting seat of the main shaft; 8. a third screw; 9. a first bearing; 10. a chain inductive switch; 11. a chain; 12. a driven gear; 13. a drive gear; 14. a motor; 15. a fourth screw; 16. a fifth screw; 17. a left fixed shaft of the main shaft; 18. a left fixing seat of the first steel wire rope; 19. a first spindle; 20. a sixth screw; 21. a seventh screw; 22. a first spindle connection shaft; 23. a second spindle; 24. an eighth screw; 25. a ninth screw; 26. a second spindle connecting shaft; 27. a third spindle; 28. a universal joint; 29. a main shaft right fixed shaft; 30. a tenth screw; 31. a second bearing; 32. a steel wire locking rod; 33. an eleventh screw; 34. a right supporting seat of the main shaft; 35. a third bearing; 36. a twelfth screw; 37. an electric push rod; 38. a stop bolt; 39. a first wire rope; 40. a thirteenth screw; 41. a fourth bearing; 42. a left support seat of the guide shaft; 43. a left fixed shaft of the guide shaft; 44. a fourteenth screw; 45. a first guide shaft; 46. a fifteenth screw; 47. a first guide seat; 48. a fifth bearing; 49. sixteenth screw; 50. the first guide shaft is connected with the shaft; 51. seventeenth screw; 52. a second guide shaft; 53. an eighteenth screw; 54. a second guide seat; 55. a sixth bearing; 56. nineteenth screw; 57. the second guide shaft is connected with the shaft; 58. a twentieth screw; 59. a third guide shaft; 60. a twenty-first screw; 61. a third guide seat; 62. a seventh bearing; 63. a guide shaft right fixed shaft; 64. a guide shaft right support seat; 65. a twenty-second screw; 66. an eighth bearing; 67. a twenty-third screw; 68. a twenty-fourth screw; 69. A first front weight bar; 70. a first fixing ring; 71. a second wire rope; 72. a first turnbuckle; 73. the first turnbuckle fixing seat; 74. a twenty-fifth screw; 75. a second turnbuckle fixing seat; 76. a second turnbuckle; 77. a left fixing seat; 78. a twenty-sixth screw; 79. a third turnbuckle fixing seat; 80. a third turnbuckle; 81. a fourth wire rope; 82. a third fixing ring; 83. a third wire rope; 84. a first rear weight bar; 85. a first intermediate weight bar; 86. a second fixing ring; 87. a second rear weight bar; 88. a second front weight bar; 89. a second middle weight bar; 90. a third rear weight bar; 91. a third middle weight bar; 92. a third front weight bar; 93. a fourth turnbuckle; 94. fifth turnbuckle; 95. a sixth turnbuckle; 96. a twenty-seventh screw; 97. a fourth turnbuckle fixing seat; 98. a twenty eighth screw; 99. a right fixing seat; 100. a sixth turnbuckle fixing seat; 101. fifth turnbuckle fixing seat; 102. a rising travel switch; 103. a descent sensing switch; 104. and a ninth bearing.
Detailed Description
As shown in fig. 1, the large electric curtain without size limitation according to the embodiment of the invention comprises a frame, a curtain surface 6, a transmission mechanism, a guide mechanism and a counterweight mechanism;
The frame comprises: a first frame 1, a first screw 2, a second frame 3, a second screw 4, a third frame 5; the right end of the first frame 1 is connected with the left end of the second frame 3 by a first screw 2, and the right end of the second frame is connected with the left end of the third frame by a second screw;
The curtain surface 6 is provided with a protruding part for detection by a descending induction switch, a closed cavity is arranged at the lower end of the curtain surface, one end of the curtain surface 6 is fixed on an integral spindle consisting of a first spindle 19, a second spindle 23 and a third spindle 27, the other end of the curtain surface 6 is fixed on an integral middle counterweight rod consisting of a first middle counterweight rod 85, a second middle counterweight rod 89 and a third middle counterweight rod 91, the curtain surface 6 is provided with a protruding part corresponding to the descending induction switch 103, and when the descending induction switch 103 senses the protruding part of the curtain surface 6, the motor 14 controls the spindle to stop rotating, and the curtain surface 6 stops descending at the moment;
The transmission mechanism comprises: the main shaft left support seat 7, the third screw 8, the first bearing 9, the chain induction switch 10, the chain 11, the driven gear 12, the driving gear 13, the motor 14, the fourth screw 15, the fifth screw 16, the main shaft left fixing shaft 17, the first steel wire rope left fixing seat 18, the first main shaft 19, the sixth screw 20, the seventh screw 21, the first main shaft connecting shaft 22, the second main shaft 23, the eighth screw 24, the ninth screw 25, the second main shaft connecting shaft 26, the third main shaft 27, the universal joint 28, the main shaft right fixing shaft 29, the tenth screw 30, the second bearing 31, the steel wire locking rod 32, the eleventh screw 33, the main shaft right support seat 34, the third bearing 35, the twelfth screw 36, the electric push rod 37, the stop pin 38, the first steel wire rope 39, the ascending travel switch 102, the descending induction switch 103 and the ninth bearing 104; wherein the right end of the first main shaft 19 is fixedly connected with the left end of the second main shaft 23 by a first main shaft connecting shaft 22, a sixth screw 20 and a seventh screw 21, the right end of the second main shaft 23 is fixedly connected with the left end of the third main shaft 27 by a second main shaft connecting shaft 26, an eighth screw 24 and a ninth screw 25, the first steel wire rope left fixing seat 18 is connected with the main shaft left fixing shaft 17, a first steel wire rope 39 penetrates into the main shaft, the left end is fixed on the first steel wire rope left fixing seat 18, the right end is fixed on the universal joint 28, the universal joint 28 is connected with a steel wire locking rod 32, the steel wire locking rod 32 penetrates into a threaded hole in the center of the main shaft right fixing shaft 29, the tightness of the first steel wire rope 39 is adjusted by rotating the steel wire locking rod 32, the main shaft left fixing shaft 17 is fixed on the first main shaft 19 by a fourth screw 15, the main shaft right fixing shaft 29 is fixed on the third main shaft 27 by a tenth screw 30, the driven gear 12 is fixed on the left main shaft fixing shaft 17 by a fourth screw 15, the driving gear 13 is connected with the motor 14, the motor 14 is fixed on the first frame 1 by a fifth screw 16, the chain 11 is connected with the driving gear 13 and the driven gear 12, the first bearing 9 is arranged in the left main shaft supporting seat 7, the left main shaft fixing shaft 17 is inserted into the first bearing 9, the left main shaft supporting seat 7 is fixed on the first frame 1 by a third screw 8, the chain inductive switch 10 is connected with the left main shaft supporting seat 7, the inductive part is aligned with the chain 11, the second bearing 31 is fixed on the right main shaft fixing shaft 29 by an eleventh screw 33, four equal parts are uniformly distributed, the third bearing 35 is arranged in the right main shaft supporting seat 34, the right main shaft fixing shaft 29 is inserted into the third bearing 35, the twelfth screw 36 fixes the right main shaft supporting seat 34 on the third frame 5, the tail part of the electric push rod 37 is fixed on the third frame 5, the head is connected with a stop bolt 38, a ninth bearing 104 is arranged at the head of the stop bolt 38, and the electric push rod 37 controls the stop bolt 38 to stretch out and draw back;
the guide mechanism includes: thirteenth screw 40, fourth bearing 41, guide shaft left support base 42, guide shaft left fixing shaft 43, fourteenth screw 44, first guide shaft 45, fifteenth screw 46, first guide shaft base 47, fifth bearing 48, sixteenth screw 49, first guide shaft connecting shaft 50, seventeenth screw 51, second guide shaft 52, eighteenth screw 53, second guide shaft base 54, sixth bearing 55, nineteenth screw 56, second guide shaft connecting shaft 57, twentieth screw 58, third guide shaft 59, twenty-first screw 60, third guide shaft base 61, seventh bearing 62, guide shaft right fixing shaft 63, guide shaft right support base 64, twenty-second screw 65, eighth bearing 66, twenty-third screw 67; the right end of the first guide shaft 45 is fixedly connected with the left end of the second guide shaft 52 by using a first guide shaft connecting shaft 50, a sixteenth screw 49 and a seventeenth screw 51, the right end of the second guide shaft 52 is fixedly connected with the left end of the third guide shaft 59 by using a second guide shaft connecting shaft 57, a nineteenth screw 56 and a twenty-third screw 58, the left guide shaft fixing shaft 43 is fixedly arranged at the left end of the first guide shaft 45 by using a thirteenth screw 40, the fourth bearing 41 is arranged in a guide shaft left supporting seat 42, the left guide shaft fixing shaft 43 is inserted into a fourth bearing 41, the guide shaft left supporting seat 42 is fixedly arranged on the first frame 1 by using a fourteenth screw 44, the guide shaft right fixing shaft 63 is fixedly arranged at the right end of the third guide shaft 59 by using a twenty-second screw 65, the eighth bearing 66 is arranged in a guide shaft right supporting seat 64, the guide shaft right fixing shaft 63 is inserted into an eighth bearing 66, the guide shaft right supporting seat 64 is fixedly arranged on a third frame 5 by using a twenty-third screw 67, the first guide shaft right fixing shaft seat 47 is provided with a fifth bearing 48, the fifth bearing 46 is fixedly arranged on the first frame 1 by using the fifteenth screw 46, the fifth bearing 55 is fixedly arranged on the third frame 5 by using the twenty-third bearing seat 55, the seventh bearing 55 is fixedly arranged on the seventh frame 55 and the seventh bearing 5 by using the twenty-third bearing 55;
The counterweight mechanism includes: twenty-fourth screw 68, first front weight bar 69, first securing ring 70, second wire rope 71, first turnbuckle 72, first turnbuckle holder 73, twenty-fifth screw 74, second turnbuckle holder 75, second turnbuckle 76, left holder 77, twenty-sixth screw 78, third turnbuckle holder 79, third turnbuckle 80, fourth wire rope 81, third securing ring 82, third wire rope 83, first rear weight bar 84, first middle weight bar 85, second securing ring 86, second rear weight bar 87, second front weight bar 88, second middle weight bar 89, A third rear weight bar 90, a third middle weight bar 91, a third front weight bar 92, a fourth turnbuckle 93, a fifth turnbuckle 94, a sixth turnbuckle 95, a twenty-seventh buckle 96, a fourth turnbuckle holder 97, a twenty-eighth buckle 98, a right holder 99, a sixth turnbuckle holder 100, and a fifth turnbuckle holder 101; the first middle counterweight bar 85, the second middle counterweight bar 89 and the third middle counterweight bar 91 are sequentially inserted into the closed cavity below the screen surface 6, the twenty-fourth screw 68 respectively fixes the first front counterweight bar 69, the first middle counterweight bar 85, the first rear counterweight bar 84, the second front counterweight bar 88, the second middle counterweight bar 89, the second rear counterweight bar 87, the third front counterweight bar 92, the third middle counterweight bar 91 and the third rear counterweight bar 90, the first fixing ring 70 is uniformly distributed outside the first front counterweight bar 69, the second front counterweight bar 88 and the third front counterweight bar 92, and the second fixing ring 86 is uniformly distributed outside the first middle counterweight bar 85, the second middle counterweight bar 89, the third fixing ring 86, The third fixing ring 82 is uniformly distributed outside the first rear weight bar 84, the second rear weight bar 87 and the third rear weight bar 90 below the third middle weight bar 91, the second steel wire rope 71 sequentially penetrates into the first fixing ring 70, the left end of the second steel wire rope 71 is connected with the first turnbuckle 72, the left end of the first turnbuckle 72 is connected with the first turnbuckle fixing seat 73, the first turnbuckle fixing seat 73 is fixed on the left fixing seat 77 by using the twenty-fifth screw 74, the right end of the second steel wire rope 71 is connected with the sixth turnbuckle 95, the right end of the sixth turnbuckle 95 is connected with the sixth turnbuckle fixing seat 100, the sixth turnbuckle fixing seat 100 is fixed on the right fixing seat 99 by using a twenty-seventh screw 96, the third steel wire 83 sequentially penetrates into the second fixing ring 86, the left end is connected with the second turnbuckle 76, the left end of the second turnbuckle 76 is connected with the second turnbuckle fixing seat 75, the second turnbuckle fixing seat 75 is fixed on the left fixing seat 77 by using the twenty-fifth screw 74, the right end of the third steel wire 83 is connected with the fifth turnbuckle 94, the right end of the fifth turnbuckle 94 is connected with the fifth turnbuckle fixing seat 101, the fifth turnbuckle fixing seat 101 is fixed on the right fixing seat 99 by using the twenty-seventh screw 96, the fourth steel wire 81 sequentially penetrates into the third fixing ring 82, the left end is connected with the third turnbuckle 80, the left end of the third turnbuckle 80 is connected with the third turnbuckle fixing seat 79, the third turnbuckle fixing seat 79 is fixed on the left fixing seat 77 by using the twenty-fifth screw 74, the right end of the fourth wire rope 81 is connected with the fourth turnbuckle 93, the right end of the fourth turnbuckle 93 is connected with the fourth turnbuckle fixing seat 97, the fourth turnbuckle fixing seat 97 is fixed on the right fixing seat 99 by a twenty-seventh screw 96, the twenty-sixth screw 78 fixes the left fixing seat 77 on the left side of the first front counterweight strip 69 and the first rear counterweight strip 84, the twenty-eighth screw 98 fixes the right fixing seat 99 on the right side of the third front counterweight strip 92 and the third rear counterweight strip 90, the ascending travel switch 102 is fixed on the first frame 1, when the left fixing seat 77 ascends to contact the ascending travel switch 102, the motor 14 stops rotating, the curtain surface 6 stops rising;
The motor 14 drives the driving gear 13 to rotate, the driving gear 13 drives the driven gear 12 through the chain 11, at this time, the first main shaft 19, the second main shaft 23 and the third main shaft 27 are supported by the main shaft left supporting seat 7 and the main shaft right supporting seat 34, and are driven by the first bearing 9 and the third bearing 35, one end of the curtain surface 6 is fixed on the integral main shaft formed by the first main shaft 19, the second main shaft 23 and the third main shaft 27, and the other end is fixed on the integral middle counterweight bar formed by the first middle counterweight bar 85, the second middle counterweight bar 89 and the third middle counterweight bar 91. The upper part of the screen 6 is moved downward and upward by the first guide shaft 45, the second guide shaft 52, and the third guide shaft 59. The lower parts of the first guide shaft 45, the second guide shaft 52 and the third guide shaft 59 are supported and corrected by the first guide seat 47, the fifth bearing 48, the second guide seat 54, the sixth bearing 55, the third guide seat 61 and the seventh bearing 62, the fifth bearing 48, the sixth bearing 55 and the seventh bearing 62 synchronously move with the first guide shaft 45, the second guide shaft 52 and the third guide shaft 59, when the left fixing seat 77 ascends to contact with the ascending travel switch 102 in the ascending process of the screen surface 6, the motor 14 stops rotating, the screen surface 6 stops ascending, the main shaft left supporting seat 7 is provided with the chain inductive switch 10 for detecting a chain, when the chain breaks, the inductive switch sends a signal to the control system, the control system controls the motor 14 to stop rotating, and meanwhile, the electric push rod 37 pushes the stop bolt 38 forwards, the stop bolt 38 is inserted into a space formed by the four second bearings 31, so that the main shaft is prevented from continuing rotating, the use safety is ensured, the front end of the stop bolt 38 is provided with the ninth bearing 104, the condition that the stop bolt 31 is in a straight state just when moving forwards is avoided, and the stop bolt 38 can be inserted into the stop position 38.
The embodiments have been described so as to facilitate a person of ordinary skill in the art in order to understand and apply the present technology, it will be apparent to those skilled in the art that various modifications may be made to these examples and that the general principles described herein may be applied to other embodiments without undue burden. Accordingly, the present application is not limited to the above embodiments, and those skilled in the art, based on the disclosure of the present application, should make improvements and modifications within the scope of the present application.
Claims (5)
1. The large-sized electric curtain without size limitation comprises a first frame (1), a first screw (2), a second frame (3), a second screw (4), a third frame (5), a curtain surface (6), a main shaft left supporting seat (7), a third screw (8), a first bearing (9), a chain inductive switch (10), a chain (11), a driven gear (12), a driving gear (13), a motor (14), a fourth screw (15), a fifth screw (16), a main shaft left fixing shaft (17), a first steel wire rope left fixing seat (18), a first main shaft (19), a sixth screw (20), a seventh screw (21), a third screw (8), A first main shaft connecting shaft (22), a second main shaft (23), an eighth screw (24), a ninth screw (25), a second main shaft connecting shaft (26), a third main shaft (27), a universal joint (28), a main shaft right fixed shaft (29), a tenth screw (30), a second bearing (31), a steel wire locking rod (32), an eleventh screw (33), a main shaft right supporting seat (34), a third bearing (35), a twelfth screw (36), an electric push rod (37), a stopping bolt (38), a first steel wire rope (39), a thirteenth screw (40), a fourth bearing (41), a guide shaft left supporting seat (42), a third bearing (35), A left fixed shaft (43), a fourteenth screw (44), a first guide shaft (45), a fifteenth screw (46), a first guide seat (47), a fifth bearing (48), a sixteenth screw (49), a first guide shaft connecting shaft (50), a seventeenth screw (51), a second guide shaft (52), an eighteenth screw (53), a second guide seat (54), a sixth bearing (55), a nineteenth screw (56), a second guide shaft connecting shaft (57), a twentieth screw (58), a third guide shaft (59), a twenty first screw (60), a third guide seat (61), a seventh bearing (62), a third bearing (62), A guide shaft right fixing shaft (63), a guide shaft right supporting seat (64), a twenty-second screw (65), an eighth bearing (66), a twenty-third screw (67), a twenty-fourth screw (68), a first front counterweight bar (69), a first fixing ring (70), a second steel wire rope (71), a first turnbuckle (72), a first turnbuckle fixing seat (73), a twenty-fifth screw (74), a second turnbuckle fixing seat (75), a second turnbuckle (76), a left fixing seat (77), a twenty-sixth screw (78), a third turnbuckle fixing seat (79), a third turnbuckle (80), A fourth steel wire rope (81), a third fixed ring (82), a third steel wire rope (83), a first rear counterweight strip (84), a first middle counterweight strip (85), a second fixed ring (86), a second rear counterweight strip (87), a second front counterweight strip (88), a second middle counterweight strip (89), a third rear counterweight strip (90), a third middle counterweight strip (91), a third front counterweight strip (92), a fourth turnbuckle (93), a fifth turnbuckle (94), a sixth turnbuckle (95), a twenty-seventh buckle (96), a fourth turnbuckle fixing seat (97), a twenty-eighth buckle (98), a right fixing seat (99), A sixth turnbuckle fixing seat (100), a fifth turnbuckle fixing seat (101), an ascending travel switch (102), a descending induction switch (103) and a ninth bearing (104),
The method is characterized in that: the first frame (1), the second frame (3), the third frame (5), the first main shaft (19), the second main shaft (23), the third main shaft (27), the first guide shaft (45), the second guide shaft (52), the third guide shaft (59), the first front counterweight strip (69), the first rear counterweight strip (84), the first middle counterweight strip (85), the second rear counterweight strip (87), the second front counterweight strip (88), the second middle counterweight strip (89), the third rear counterweight strip (90), the third middle counterweight strip (91) and the third front counterweight strip (92) are of a segmented splicing structure,
The right end of the first main shaft (19) is fixedly connected with the left end of the second main shaft (23) through a first main shaft connecting shaft (22), a sixth screw (20) and a seventh screw (21), the right end of the second main shaft (23) is fixedly connected with the left end of the third main shaft (27) through a second main shaft connecting shaft (26), an eighth screw (24) and a ninth screw (25), the left fixed seat (18) of the first steel wire rope is connected with the left fixed seat (17) of the main shaft, the first steel wire rope (39) sequentially penetrates into the main shaft, the left end of the first steel wire rope is fixed on the left fixed seat (18) of the first steel wire rope, the right end of the first steel wire rope is fixed on a universal joint (28), the universal joint (28) is connected with a steel wire locking rod (32), the steel wire locking rod (32) penetrates into a threaded hole in the center of the right fixed shaft (29) of the main shaft, the left fixed shaft (17) of the main shaft is rotatably fixed on the first main shaft (19) through a fourth screw (15), the right fixed shaft (29) is fixed on the third main shaft (27) through a tenth screw (30),
The right end of the first guide shaft (45) is fixedly connected with the left end of the second guide shaft (52) through a first guide shaft connecting shaft (50), a sixteenth screw (49) and a seventeenth screw (51), the right end of the second guide shaft (52) is fixedly connected with the left end of the third guide shaft (59) through a second guide shaft connecting shaft (57), a nineteenth screw (56) and a twenty-first screw (58), the left guide shaft fixing shaft (43) is fixedly arranged at the left end of the first guide shaft (45) through a thirteenth screw (40), a fourth bearing (41) is arranged in a left guide shaft supporting seat (42), the left guide shaft fixing shaft (43) is inserted into the fourth bearing (41), the left guide shaft supporting seat (42) is fixedly arranged on the first frame (1) through a fourteenth screw (44), the right guide shaft fixing shaft (63) is fixedly arranged at the right end of the third guide shaft (59) through a twenty-second screw (65), an eighth bearing (66) is arranged in a right guide shaft supporting seat (64), the right guide shaft fixing shaft (63) is inserted into the eighth bearing (66) through a thirteenth screw (40), the right guide shaft fixing shaft (64) is fixedly arranged on the third frame (48) through a twenty-first bearing (46), the right bearing (46) is fixedly arranged on the fifth bearing (47), the third guide seat (61) is provided with a seventh bearing (62) and is fixed on the third frame (5) by an eighteenth screw (53), the fifth bearing (48), the sixth bearing (55) and the seventh bearing (62) are respectively contacted with the first guide shaft (45), the second guide shaft (52) and the third guide shaft (59),
The first middle counterweight bar (85), the second middle counterweight bar (89) and the third middle counterweight bar (91) are sequentially inserted into a closed cavity below the curtain surface (6), the twenty-fourth screw (68) respectively fixes the first front counterweight bar (69), the first middle counterweight bar (85) and the first rear counterweight bar (84), the second front counterweight bar (88), the second middle counterweight bar (89), the second rear counterweight bar (87), the third front counterweight bar (92), the third middle counterweight bar (91) and the third rear counterweight bar (90), the first fixing ring (70) is uniformly distributed outside the first front counterweight bar (69), the second front counterweight bar (88) and the third front counterweight bar (92), the second fixing ring (86) is uniformly distributed below the first middle counterweight bar (85), the second middle counterweight bar (89) and the third middle counterweight bar (91), the third fixing ring (82) is fixedly arranged outside the first rear counterweight bar (84), the second rear counterweight bar (87) and the third rear counterweight bar (90), the second fixing ring (71) is sequentially fixedly arranged at the left turnbuckle end (72) of the first fixing seat (72) by a left turnbuckle screw, the first fixing ring (70) is uniformly distributed at the left end of the first turnbuckle screw (72), the right end of the second steel wire rope (71) is connected with a sixth turnbuckle (95), the right end of the sixth turnbuckle (95) is connected with a sixth turnbuckle fixing seat (100), the sixth turnbuckle fixing seat (100) is fixed on a right fixing seat (99) by a twenty-seventh screw (96) of a screw, a third steel wire rope (83) sequentially penetrates into a second fixing ring (86), the left end of the third steel wire rope (83) is connected with a second turnbuckle fixing seat (75), the second turnbuckle fixing seat (75) is fixed on a left fixing seat (77) by a twenty-fifth screw (74), the right end of the third steel wire rope (83) is connected with a fifth turnbuckle fixing seat (94), the right end of the fifth turnbuckle fixing seat (101) is connected with a fifth turnbuckle fixing seat (101), the fifth turnbuckle fixing seat (101) is sequentially penetrated into a third fixing ring (82) by a twenty-seventh screw (96) and is sequentially penetrated into a third fixing ring (80), the third turnbuckle fixing seat (80) is connected with a third turnbuckle fixing seat (80) by a fourth steel wire rope (80), the right end of the fourth turnbuckle (93) is connected with a fourth turnbuckle fixing seat (97), the fourth turnbuckle fixing seat (97) is fixed on a right fixing seat (99) by a twenty-seventh screw (96), a twenty-sixth screw (78) is used for fixing a left fixing seat (77) on the left side of the first front counterweight strip (69) and the left side of the first rear counterweight strip (84), and a twenty-eighth screw (98) is used for fixing a right fixing seat (99) on the right side of the third front counterweight strip (92) and the right side of the third rear counterweight strip (90).
2. A large electric screen without size limitation according to claim 1, wherein: a protruding part is arranged above the curtain surface (6) and corresponds to the descending induction switch (103).
3. A large electric screen without size limitation according to claim 1, wherein: a chain induction switch (10) is arranged on the left supporting seat (7) of the main shaft and corresponds to the chain (11).
4. A large electric screen without size limitation according to claim 1, wherein: the first frame (1) is provided with a lifting travel switch (102) corresponding to the left fixing seat (77).
5. A large electric screen without size limitation according to claim 1, wherein: an electric push rod (37) is arranged on the third frame (5), the front end of the electric push rod (37) is connected with a stop bolt (38), a ninth bearing (104) is arranged on the stop bolt (38), a second bearing (31) is arranged on the right main shaft fixing shaft (29), and the second bearing is fixed by an eleventh screw (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504078.0A CN109143760B (en) | 2017-06-27 | 2017-06-27 | Large-sized electric curtain without size limitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710504078.0A CN109143760B (en) | 2017-06-27 | 2017-06-27 | Large-sized electric curtain without size limitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109143760A CN109143760A (en) | 2019-01-04 |
| CN109143760B true CN109143760B (en) | 2024-06-11 |
Family
ID=64805505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710504078.0A Active CN109143760B (en) | 2017-06-27 | 2017-06-27 | Large-sized electric curtain without size limitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109143760B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW578931U (en) * | 2003-05-16 | 2004-03-01 | Peace Ship Internat Entpr Co L | Electric screen roller and balance rod assembly |
| US6873461B1 (en) * | 2003-02-25 | 2005-03-29 | Draper, Inc. | Case for roller-operated screen system |
| JP2006072291A (en) * | 2004-08-02 | 2006-03-16 | Izumi-Cosmo Co Ltd | Portable screen device |
| CN201222161Y (en) * | 2008-07-18 | 2009-04-15 | 深圳市白雪投影银幕有限公司 | Mechanism for large-sized electric screen to regulate distortion of shaft-winding tube |
| CN203385989U (en) * | 2013-08-05 | 2014-01-08 | 郑强 | Screen and downward reeling type mechanism |
| CN204009340U (en) * | 2014-07-23 | 2014-12-10 | 广州市雄云视听设备有限公司 | A kind of quiet screen of dynamoelectric projection |
| KR20150088137A (en) * | 2014-01-23 | 2015-07-31 | 울산대학교 산학협력단 | Flexible Display Device and Beam Projector having the same |
| CN206863471U (en) * | 2017-06-27 | 2018-01-09 | 孙俊华 | A kind of Large Electric curtain of no size limitation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006121847A2 (en) * | 2005-05-05 | 2006-11-16 | Infocus Corporation | Deployable projection screen |
-
2017
- 2017-06-27 CN CN201710504078.0A patent/CN109143760B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6873461B1 (en) * | 2003-02-25 | 2005-03-29 | Draper, Inc. | Case for roller-operated screen system |
| TW578931U (en) * | 2003-05-16 | 2004-03-01 | Peace Ship Internat Entpr Co L | Electric screen roller and balance rod assembly |
| JP2006072291A (en) * | 2004-08-02 | 2006-03-16 | Izumi-Cosmo Co Ltd | Portable screen device |
| CN201222161Y (en) * | 2008-07-18 | 2009-04-15 | 深圳市白雪投影银幕有限公司 | Mechanism for large-sized electric screen to regulate distortion of shaft-winding tube |
| CN203385989U (en) * | 2013-08-05 | 2014-01-08 | 郑强 | Screen and downward reeling type mechanism |
| KR20150088137A (en) * | 2014-01-23 | 2015-07-31 | 울산대학교 산학협력단 | Flexible Display Device and Beam Projector having the same |
| CN204009340U (en) * | 2014-07-23 | 2014-12-10 | 广州市雄云视听设备有限公司 | A kind of quiet screen of dynamoelectric projection |
| CN206863471U (en) * | 2017-06-27 | 2018-01-09 | 孙俊华 | A kind of Large Electric curtain of no size limitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109143760A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201240810Y (en) | Novel manual hoister | |
| CN104674655B (en) | A kind of cable climbing robot | |
| CN106064798A (en) | A kind of electric power overhaul hoistable platform | |
| CN111762681B (en) | Steel structure truss horizontal adjustment installation equipment and installation construction process | |
| WO2023019991A1 (en) | Operation device for detecting bridge bottom surface | |
| CN111155439B (en) | Prefabricated beam preassembling adjusting device and prefabricated beam preassembling adjusting process for building materials | |
| CN210239058U (en) | Adjustable base of elevator frame | |
| CN104674654A (en) | Cable climbing robot | |
| CN218893378U (en) | Steel construction section bar hoist device | |
| CN109143760B (en) | Large-sized electric curtain without size limitation | |
| CN204530472U (en) | Robot capable of crawling cable | |
| KR200163244Y1 (en) | A wiring apparatus of an electric wire | |
| CN103303847A (en) | Hoisting equipment for large welding workpiece | |
| JPH07279440A (en) | Device for inspecting structure | |
| KR102082030B1 (en) | Elevator device and method for modifying same | |
| CN207177305U (en) | Prefabricated beam stretching jack suspension door frame | |
| CN202644959U (en) | Attached elevating scaffold based on lead screw and screw transmission | |
| CN211338595U (en) | Motor hoist and mount overhauls device | |
| CN211766378U (en) | Aircraft generator dismouting car | |
| CN210341633U (en) | Telescopic truss for bridge inspection vehicle | |
| CN109576472B (en) | Heat treating stove roller quick replacement device | |
| CN108147249B (en) | Rotary elevator rope head device and elevator system | |
| CN202848912U (en) | Portal crane | |
| KR200446922Y1 (en) | Horizontal maintence device for the lift which has bending shape | |
| CN204531349U (en) | Anti-drop device and attachment guide rail anti-falling lifting scaffold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240516 Address after: Room 501, 5th Floor, Building A, No. 12 Hongda North Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing, 102600 (Yizhuang Cluster, High end Industrial Zone, Beijing Pilot Free Trade Zone) Applicant after: Beijing Licheng Century Culture Technology Co.,Ltd. Country or region after: China Address before: Room 68-1, No. 7888 Humin Road, Minhang District, Shanghai, 2011 Applicant before: Sun Junhua Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |