CN208626629U - A kind of electricity screen-rollong cloth lifting device - Google Patents

Abstract

The utility model discloses a kind of electric screen-rollong cloth lifting devices, it include: including driving device B, shaft A and shaft B are connected on the driving device B, upper winding shaft B is provided with below the shaft A and shaft B, reel A is installed on the shaft A, reel B is installed on the shaft B, wire A is wound on the reel A, wire B is wound on the reel B, fixed device is separately installed at left and right sides of the upper winding shaft B, wire C and wire D are connected separately on the fixed device, curtain B is fixed on the upper winding shaft B, lower winding shaft B is provided with below the upper winding shaft B, the wire A, wire B, wire C, wire D, the other end of curtain B is each attached on lower winding shaft B.The purpose of this utility model is that, lower winding shaft short to the curtain service life in traditional electric screen-rollong cloth is easily pounded and fallen and the problems such as curtain side is easily rolled improves.

Description

A kind of electricity screen-rollong cloth lifting device

Technical field

The utility model belongs to electric screen-rollong cloth field, and in particular to a kind of electricity screen-rollong cloth lifting device.

Background technique

Curtain is a kind of device being widely used in arenas and cinema, for motion picture projection quality and stage effect It plays an important role, simultaneously because frequent use of the curtain in arenas and cinema, its own service life and safety It is also an important factor for measuring curtain quality.

Existing electricity screen-rollong cloth is commonly overwind curtain, as shown in Figure 1, its structure are as follows: pacify between two bracket A Spool A is loaded onto, one end of upper winding shaft A is connected with driving device A, and driving device A can drive upper winding shaft A around its own center Axis is rotated, and curtain A is wound on upper winding shaft A, and one end of curtain A is hung down naturally from upper winding shaft A, and its end connects There is lower winding shaft A.When needing that curtain is opened or rolled, only upper winding shaft A need to be driven forward or reverse using driving device A, from And it realizes the opening of curtain A or rolls.The device is easy to operate, easy to use, but since the weight of lower winding shaft A is hung on always Below curtain A, curtain A can be made to be easy to be torn after prolonged use, influence the curtain service life；In addition, be torn when curtain or When brake failure occurs in driving device A, lower winding shaft A curtain can be pounded from top and be fallen in tow, seriously threaten the people that works on stage The personal safety of member；In addition, since lower winding shaft A is naturally drooped, no restraining force is applied to it, therefore a left side of curtain A Right two sides are easy to appear the case where rolling, and influence the flatness of curtain, and then influence the project effect of film.

Summary of the invention

The present invention provides a kind of electric screen-rollong cloth lifting device, it is therefore an objective to it is short to the curtain service life in traditional electric screen-rollong cloth, under Spool, which is easily pounded, to fall and the problems such as curtain side is easily rolled improves.

Specific technical solution is as follows:

A kind of electricity screen-rollong cloth lifting device, including it is connected with shaft A and shaft B on driving device B, the driving device B, The end of the shaft A and shaft B is connected separately withBracket B, described twoBracket BBetween be also equipped with upper winding shaft B, described turn Reel A is installed on axis A, reel B is installed on the shaft B, wire A, the volume are wound on the reel A One end that wire B, the wire A and wire B are wound on line wheel B is separately fixed on reel A and reel B, The other end is wound after several circles on reel A and reel B to extending below reel A and reel B, the upper winding shaft B The left and right sides be separately installed with fixed device, be connected separately with wire C and wire D on the fixed device, it is described on It is fixed with curtain B on spool B, lower winding shaft B, the wire A, wire B, wire are provided with below the upper winding shaft B C, wire D, curtain B other end end be each attached on lower winding shaft B, and several circles are wound on lower winding shaft B.

Preferably, the wire A and wire B is identical with the winding direction on reel B in reel A, it is described The winding direction of wire C, wire D, curtain B on lower winding shaft B is identical, and the wire A and wire B are in lower winding shaft B On winding direction it is opposite with the winding direction of wire C, wire D, curtain B on lower winding shaft B.

Preferably, the lower winding shaft B includes optical axis portion, spiral part A, spiral part B, spiral part C, spiral portion Divide D, the optical axis portion, spiral part A, spiral part B, spiral part C, spiral part D are cylindric, the optical axis Spiral part C and spiral part D are respectively arranged at left and right sides of partial, the other end of the spiral part C is provided with spiral Part A, the other end of the spiral part D are provided with spiral part B, the one ends wound of the wire A on reel A, The other end is wrapped on the A of spiral part, and for the one ends wound of the wire B on reel B, the other end is wrapped in spiral part On B, one end of the wire C is fixed, and the other end is wrapped on the C of spiral part on the securing means, and the one of the wire D End is fixed on the securing means, and the other end is wrapped on the D of spiral part, the spiral part A, spiral part B, spiral part C, Spiral part D, reel A, reel B cylindrical surface on be machined with helical form wire casing respectively, each helical form wire casing is set Set that direction is identical as the wire winding direction of each part mentioned above, the helical form wire casing is used to place the wire wound.

Preferably, the shaft A8, shaft B9 are parallel with upper winding shaft B and lower winding shaft B.

Preferably, the driving device B includes motor and speed reducer, the drive shaft of the motor is connected with speed reducer It connects.

Preferably, the speed reducer is that there are two the speed reducers of output end for tool.

Preferably, the fixed device is hook.

Preferably,Two bracket BOn side inwardly be separately installed with travel switch, when wire drags last volume When axis B rises, lower winding shaft B can touch travel switch when rising to highest point, and travel switch is for controlling lower winding shaft B rising Position.

Preferably, gear A is installed on the shaft A, the central axis of the gear A and the central axis weight of shaft A It closes, the side of the gear A is provided with limit protection device.

Preferably, the limit protection device includes being equipped with threaded rod between two brackets C, described two bracket C WithGuiding axis, the threaded rod is parallel with guiding axis, and the threaded rod can be rotated around central axis, the guiding axis and bracket It not can be carried out relative motion between C, gear B be installed on the threaded rod, the gear B is meshed with gear A, the gear B is able to drive threaded rod rotation, is equipped with sliding block on the threaded rod, pilot hole and threaded hole, institute are machined on the sliding block State that guiding axis is passed through from pilot hole and the outer diameter of guiding axis is equal with the internal diameter of pilot hole, the threaded hole and threaded rod match It closes, is separately installed with limit switch A and limit switch B on described two bracket C.

The beneficial effects of the utility model are:

1. curtain B is wound in lower winding shaft B by setting shaft A, shaft B, upper winding shaft B, lower winding shaft B by the utility model On, and one end of wire A, B are wound in respectively on reel A, the B being mounted in shaft, other end winding and lower winding shaft B On, one end of wire C, D are fixed on upper winding shaft B, other end winding makes driving mechanism with turn on lower winding shaft B When axis A and shaft B is rotated, wire A, B can drive lower winding shaft B to scroll up and down, so that curtain B is rolled or decontroled, the technology Scheme may be implemented that curtain is opened or packed up by way of scrolling lower winding shaft, and lower winding shaft is sling by four wires, Its weight is acted on without acting on curtain on wire, to effectively reduce the load-bearing of curtain, extends curtain Service life.

2. the utility model is by the way that the winding direction of wire on lower winding shaft B to be arranged are as follows: wire C, wire D, curtain Winding direction of the cloth B on lower winding shaft B is identical, the winding direction of wire A and wire B on lower winding shaft B and above-mentioned winding It is contrary, make lower winding shaft B as viewed from one end end when, there is at left and right sides of section wire to draw lower winding shaft B, such as scheme Shown in 6, to enable lower winding shaft B stress balance, when driving device B brake failure or curtain B fracture, lower winding shaft B is remained to Balance is kept under the traction of the wire of its cross section two sides, is effectively avoided traditional electric screen-rollong cloth lower winding shaft and is held to pound and falls Problem.

3. the utility model is made by using lower winding shaft B as driving shaft, and using the operation of steel wire line traffic control lower winding shaft B Lower winding shaft B effectively avoids traditional electricity so that the curtain B surface of expansion be made to keep smooth with upper winding shaft B keeping parallelism always The left and right sides of curtain are easy to appear the case where rolling in screen-rollong cloth.

4. the utility model is provided with limit protection device, by fixing gear A on shaft B, make shaft B in rotation Gear A rotation is driven, to drive the gear B being meshed with gear A and the threaded rod being connected with gear B to rotate, to make It is threadingly moved left and right in rod axis direction with the sliding block of shaft, is mounted on the limits of left and right ends when sliding block touches and opens When closing A and limit switch B, driving device B is out of service, and lower winding shaft B stop motion, curtain rests on the position opened or closed It sets, which is used cooperatively with the travel switch being mounted on bracket B, duplicate protection can be carried out to device, from And prevent lower winding shaft B from continuing to rise after rising to extreme higher position, it avoids that device is caused to damage.

5. the utility model clever structure, novel, above-mentioned function can be realized with simple mechanism, saving is produced into This.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of overwind curtain in the prior art；

Fig. 2 is the structural schematic diagram of embodiment one；

Fig. 3 is to remove the structural schematic diagram after curtain B in embodiment one；

Fig. 4 is the cross-sectional view of the line A-A along Fig. 2；

Fig. 5 is the cross-sectional view of the line B-B along Fig. 3；

Fig. 6 is the connection schematic diagram of wire A and wire B；

Fig. 7 is the structural schematic diagram of embodiment two；

Fig. 8 is the structural schematic diagram for limiting protective device；

In figure: 1. bracket A, 2. upper winding shaft A, 3. curtain A, 4. lower winding shaft A, 5. driving device A, 6. motors, 7. slow down Machine, 8. shaft A, 9. shaft B, 10. reel A, 11. reel B, 12. bracket B, 13. upper winding shaft B, 14. fixed devices, 15. Lower winding shaft B, 16. optical axis portions, 17. spiral part A, 18. spiral part B, 19. spiral part C, 20. spiral part D, 21. Wire A, 22. wire B, 23. wire C, 24. wire D, 25. curtain B, 26. limit protection devices, 27. gear As, 28. gear B, 29. bracket C, 30. limit switch A, 31. limit switch B, 32. guiding axis, 33. sliding blocks, 34. pilot holes, 35. spiral shells Pit, 36. threaded rods, 37. driving device B, 38. travel switches.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawings and embodiments.It should be appreciated that described herein Specific embodiment is only used to explain the utility model, is not used to limit the utility model.

Embodiment one

A kind of electric screen-rollong cloth lifting device is present embodiments provided, as shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, comprising: drive Dynamic device B37, the driving device B37 include motor 6 and speed reducer 7, and the motor 6 is fixed on the base, the motor 6 Drive shaft is connected with speed reducer 7, and there are two output ends for the tool of speed reducer 7, and two output ends are located at speed reducer 7 The left and right sides, two output end center overlapping of axles.Shaft A8 and shaft are connected separately on two output ends of the speed reducer 7 B9, the shaft A8 and shaft B9 center overlapping of axles and to the left and right two opposite directions extensions.6 left and right sides of motor is It is provided withBracket B12, describedBracket B12It is fixed on the base, the end of the shaft A8 and shaft B9 respectively withBracket B12 It is connected by bearing, the shaft A8 and shaft B9 can be rotated under the drive of driving device B around central axis.It is described Upper winding shaft B13 is provided with below shaft A8 and shaft B9, the upper winding shaft B13 is parallel with shaft A8 and shaft B9, it is described on The both ends of spool B13 respectively withBracket B12Be connected, the upper winding shaft B13 withBracket B12Between without relative motion.

Reel A10 is installed on the shaft A8, reel B11, the reel A10 are installed on the shaft B9 With reel B11 be cylindrical body and diameter is equal.Wire A21, the reel B11 are wound on the reel A10 On be wound with wire B22.The one end the wire A21 is fixed on reel A10 (welding may be selected in the fixed form), The other end is wound after several circles on reel A10 to extending below reel A10.The one end the wire B22 is fixed on volume On line wheel B11 (fixed form may be selected welding), the other end is wound after several circles on reel B11 under reel B11 Fang Yanshen.Winding direction of the wire A21 and wire B22 on reel is identical, i.e., in terms of the same side of reel It goes, when wire A21 is wound clockwise on reel A10, wire B22 is also wound clockwise in reel B11 On.When wire A21 is wrapped anti-clockwise on reel A10, wire B22 is also wrapped anti-clockwise in reel On B11.

Fixed device 14 is separately installed at left and right sides of the upper winding shaft B13, the fixed device 14 is hook, institute It states fixed device 14 and is hooked on the two sides upper winding shaft B13.The bottom of the fixed device 14 is connected separately with wire C23 and steel wire The other end of line D24, the wire C23 and wire D24 extend downwardly.Curtain B25 is installed on the upper winding shaft B13, One end of the curtain B25 is fixed on upper winding shaft B13, and the other end of the curtain B25 extends downwardly.

Lower winding shaft B15 is provided with below the upper winding shaft B13, the lower winding shaft B15 and upper winding shaft B13 is arranged in parallel. The lower winding shaft B15 includes optical axis portion 16, spiral part A17, spiral part B18, spiral part C19, spiral part D20. The optical axis portion 16, spiral part A17, spiral part B18, spiral part C19, spiral part D20 be it is cylindric and in Mandrel is overlapped.The left and right sides of the optical axis portion 16 is respectively arranged with spiral part C19 and spiral part D20, the spiral The other end of part C19 is provided with spiral part A17, and the other end of the spiral part D20 is provided with spiral part B18.

The other end end of the wire A21 is fixed on the A17 of spiral part, and if winding on the A17 of spiral part Dry circle.The other end end of the wire B22 is fixed on the B18 of spiral part, and is wound on the B18 of spiral part several Circle.The other end end of the wire C23 is fixed on the C19 of spiral part, and winds several circles on the C19 of spiral part. The other end end of the wire D24 is fixed on the D20 of spiral part, and winds several circles on the D20 of spiral part.It is described The other end end of curtain B25 is fixed on optical axis portion 16, and several circles are wound on optical axis portion 16.

When needing to open or winding curtain, start driving device B37, rotate shaft A, shaft B, drives wire A21, wire B22 are released or are wound from rolling wheel A10 and rolling wheel B11, to drive lower winding shaft B15 down or up, make curtain Cloth B25 is opened or is withdrawn.The technical solution may be implemented that curtain is opened or packed up by way of controlling lower winding shaft, and under Spool is sling by four wires, acts on the weight of lower winding shaft without acting on curtain on wire, thus effectively The load-bearing for reducing curtain extends the service life of curtain.

The utility model, which is different from, is driven the design that electric screen-rollong cloth lower winding shaft naturally droops, and acts in lower winding shaft B15 application Power, make lower winding shaft B15 always with upper winding shaft B13 keeping parallelism, thus make expansion the surface curtain B25 keep it is smooth, effectively The left and right sides for avoiding curtain in traditional electric screen-rollong cloth are easy to appear the case where rolling.

The identical wire of the wire C23, the winding direction of wire D24, curtain B25 on lower winding shaft B15 The winding direction of A21 and wire B22 on lower winding shaft B15 and wire C23, wire D24, curtain B25 are in lower winding shaft B15 On winding direction it is opposite.I.e. as viewed from the side of lower winding shaft B15, when wire A21 is wound clockwise in lower winding shaft B15 On, wire B22 is also wound clockwise on lower winding shaft B15, and wire C23, wire D24, curtain B25 are inverse Hour hands are wrapped on lower winding shaft B15.When wire A21 is wrapped anti-clockwise on lower winding shaft B15, wire B22 is also For wrapped anti-clockwise on lower winding shaft B15, wire C23, wire D24, curtain B25 are wound clockwises in lower winding shaft B15 On.

By by winding direction on lower winding shaft B15 of wire C23, wire D24, curtain B25 and wire A21, Wire B22 in the winding direction on lower winding shaft B15 on the contrary, make lower winding shaft B15 as viewed from one end end when, section is left Right two sides have wire to draw lower winding shaft B15, as shown in Fig. 6, to enable lower winding shaft B15 stress balance, when driving fills When setting B37 brake failure or curtain B25 fracture, lower winding shaft B15 remains to keep under the traction of the wire of its cross section two sides Balance, effectively avoids tradition electricity screen-rollong cloth lower winding shaft B15 and easily pounds the problem of falling.

The spiral part A17, spiral part B18, spiral part C19, spiral part D20, reel A10, reel Helical form wire casing, the setting direction of each helical form wire casing and the steel of each part mentioned above are machined on the cylindrical surface of B11 respectively Silk thread winding direction is identical, and each wire is installed on inside wire casing and is wound along wire casing.

Embodiment two

A kind of electric screen-rollong cloth lifting device is present embodiments provided, as shown in Figure 7, Figure 8, in addition to comprising in embodiment one Except technical characteristic, further includes:

Side on described two bracket B12 inwardly is separately installed with travel switch 38, when wire drags lower winding shaft B15 When rising, lower winding shaft B15 can touch travel switch 38 when rising to highest point, and travel switch 38 will be to driving device B37 Signal is issued, keeps driving device B37 out of service, to control the extreme higher position of lower winding shaft B15 rising.

In addition, gear A 27 is installed on the shaft A8, the central axis of the gear A 27 and the central axis weight of shaft A8 It closes, the side of the gear A 27 is provided with limit protection device 26.The limit protection device 26 includes two bracket C29, institute It states and 36 He of threaded rod is installed between two bracket C29Guiding axis 32, the threaded rod 36 is parallel with guiding axis 32, the screw thread It is connected between bar 36 and bracket C29 by bearing, the threaded rod 36 can be rotated around central axis, the guiding axis 32 and branch It not can be carried out relative motion between frame C29.Gear B 28, the gear B 28 and 27 phase of gear A are installed on the threaded rod 36 Engagement, the gear B 28 are able to drive the rotation of threaded rod 36.Sliding block 33 is installed, on the sliding block 33 on the threaded rod 36 It is machined with pilot hole 34 and threaded hole 35, the guiding axis 32 is passed through from pilot hole 34 and the outer diameter and pilot hole of guiding axis 32 34 internal diameter is equal, and the threaded hole 35 is matched with threaded rod 36.Limit switch is separately installed on described two bracket C29 A30 and limit switch B31.

The limit protection device 36 is used to limit the extreme higher position of lower winding shaft B15 rising and the extreme lower position of decline.When When driving device B37 drives shaft B9 rotation, gear A 27 drives gear B 28 to rotate, thus what drive was connected with gear B 28 Threaded rod 36 rotates.Threadingly 36 axis direction of bar or so moves sliding block 33 under the action of threaded hole 35 is matched with threaded rod 36 It is dynamic.When sliding block 33 touches the limit switch A30 and limit switch B31 for being mounted on left and right ends, driving device B37 stops fortune Row, lower winding shaft B15 stop motion, curtain rest on the position opened or closed.The limit protection device 36 and it is mounted on branch Travel switch 38 on frame B12 is used cooperatively, and duplicate protection can be carried out to device, to prevent lower winding shaft B15 from rising to most A high position, which postpones, to be continued to rise, and avoids causing to damage to device.

The orientation such as front, back, left, right, up, down involved in the utility model word is to clearly show that technical solution It needs and sets, the protection scope of invention is not formed and limited.

It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model And range.

Claims (10)

1. a kind of electricity screen-rollong cloth lifting device, it is characterised in that: including driving device B (37), connect on the driving device B (37) It is connected to shaft A (8) and shaft B (9), the end of the shaft A (8) and shaft B (9) are connected separately withBracket B (12), described two It is aBracket B (12)Between be also equipped with upper winding shaft B (13), be equipped with reel A (10) on the shaft A (8), the shaft B (9) it is equipped on reel B (11), is wound with wire A (21) on the reel A (10), twined on the reel B (11) It is wound with wire B (22), one end of the wire A (21) and wire B (22) is separately fixed at reel A (10) and spiral It takes turns on B (11), the other end is wound after several circles on reel A (10) and reel B (11) to reel A (10) and reel Extend below B (11), is separately installed with fixed device (14) at left and right sides of the upper winding shaft B (13), the fixed device (14) it is connected separately with wire C (23) and wire D (24) on, is fixed with curtain B (25), institute on the upper winding shaft B (13) State and be provided with below upper winding shaft B (13) lower winding shaft B (15), the wire A (21), wire B (22), wire C (23), Wire D (24), curtain B (25) other end end be each attached on lower winding shaft B (15), and wound on lower winding shaft B (15) Several circles.

2. electricity screen-rollong cloth lifting device as described in claim 1, it is characterised in that: the wire A (21) and wire B (22) identical with the winding direction on reel B (11) in reel A (10), the wire C (23), wire D (24), curtain Winding direction of the cloth B (25) on lower winding shaft B (15) is identical, and the wire A (21) and wire B (22) are in lower winding shaft B (15) winding direction and the winding direction of wire C (23), wire D (24), curtain B (25) on lower winding shaft B (15) on On the contrary.

3. electricity screen-rollong cloth lifting device as claimed in claim 2, it is characterised in that: the lower winding shaft B (15) includes optical axis portion Divide (16), spiral part A (17), spiral part B (18), spiral part C (19), spiral part D (20), the optical axis portion (16), spiral part A (17), spiral part B (18), spiral part C (19), spiral part D (20) are cylindric, the light Spiral part C (19) and spiral part D (20), the spiral part C (19) are respectively arranged at left and right sides of shaft portion (16) The other end be provided with spiral part A (17), the other end of the spiral part D (20) is provided with spiral part B (18), described On reel A (10), the other end is wrapped on spiral part A (17) one ends wound of wire A (21), the wire B (22) on reel B (11), the other end is wrapped on spiral part B (18) one ends wound, and the one of the wire C (23) End is fixed on fixed device (14), and the other end is wrapped on spiral part C (19), and one end of the wire D (24) is fixed On fixed device (14), the other end is wrapped on spiral part D (20), the spiral part A (17), spiral part B (18), Spiral part C (19), spiral part D (20), reel A (10), reel B (11) cylindrical surface on be machined with helical form respectively The setting direction of wire casing, each helical form wire casing is identical as the wire winding direction of each part mentioned above, the spiral wire Slot is used to place the wire of winding.

4. electricity screen-rollong cloth lifting device as described in claim 1, it is characterised in that: the shaft A8, shaft B9 and upper winding shaft B (13) and lower winding shaft B (15) is parallel.

5. electricity screen-rollong cloth lifting device as described in claim 1, it is characterised in that: the driving device B (37) includes motor (6) it is connected with speed reducer (7), the drive shaft of the motor (6) with speed reducer (7).

6. electricity screen-rollong cloth lifting device as claimed in claim 5, it is characterised in that: the speed reducer (7) is that there are two defeated for tool The speed reducer of outlet.

7. electricity screen-rollong cloth lifting device as described in claim 1, it is characterised in that: the fixed device (14) is hook.

8. electricity screen-rollong cloth lifting device as described in claim 1, it is characterised in that:Two bracket B (12)On inwardly Side is separately installed with travel switch (38), and when wire dragging lower winding shaft B (15) rises, lower winding shaft B (15) is being risen to It can be touched when highest point travel switch (38), travel switch (38) is used to control the position of lower winding shaft B (15) rising.

9. such as electric screen-rollong cloth lifting device described in any item of the claim 1 to 8, it is characterised in that: on the shaft A (8) It is equipped with gear A (27), the central axis of the gear A (27) and the center overlapping of axles of shaft A (8), the one of the gear A (27) Side is provided with limit protection device (26).

10. electricity screen-rollong cloth lifting device as claimed in claim 9, it is characterised in that: the limit protection device (26) includes Two bracket C (29), be equipped between described two bracket C (29) threaded rod (36) andGuiding axis (32), the threaded rod (36) parallel with guiding axis (32), the threaded rod (36) can rotate around central axis, the guiding axis (32) and bracket C (29) it not can be carried out relative motion between, be equipped with gear B (28) on the threaded rod (36), the gear B (28) and gear A (27) it is meshed, the gear B (28) is able to drive threaded rod (36) rotation, is equipped with sliding block on the threaded rod (36) (33), pilot hole (34) and threaded hole (35) are machined on the sliding block (33), the guiding axis (32) is from pilot hole (34) It passes through and the outer diameter of guiding axis (32) is equal with the internal diameter of pilot hole (34), the threaded hole (35) and threaded rod (36) match It closes, is separately installed with limit switch A (30) and limit switch B (31) on described two bracket C (29).