CN109750971B - Anti-falling device for rotary rod type rolling door - Google Patents
Anti-falling device for rotary rod type rolling door Download PDFInfo
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- CN109750971B CN109750971B CN201910215363.XA CN201910215363A CN109750971B CN 109750971 B CN109750971 B CN 109750971B CN 201910215363 A CN201910215363 A CN 201910215363A CN 109750971 B CN109750971 B CN 109750971B
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- gear
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- door curtain
- stop lever
- permanent magnet
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Abstract
The invention discloses a rotary rod type anti-falling device for a roller shutter door, which is mainly used for preventing the roller shutter door from falling down to hurt people, and has simple structure and safe and reliable protection; the anti-falling device consists of an anti-falling device and a gear strip, and the working principle is as follows: when the door curtain of the roller shutter door rises, a gear rack at the lower end of the door curtain touches a gear and drives the gear to rotate, a stop lever rotates by 90 degrees and is in a horizontal state, the electromagnet is powered off, the electromagnet and the permanent magnet lose attraction, the spring elastically extends to push the permanent magnet out, a tooth projection at the front end of the permanent magnet is meshed with a tooth groove of the shaft B to clamp the stop lever so as to keep the stop lever in the horizontal state, and the stop lever can prevent the door curtain from falling to hurt people no matter whether a chain wheel of a driving device of the door curtain is unhooked, broken or other abnormal conditions exist; when the door curtain of the rolling door descends and approaches the position of the stop lever, the electromagnet is electrified, the tooth protrusion at the front end of the permanent magnet is separated from the tooth groove of the shaft B, the stop lever droops under the action of gravity, and the door curtain smoothly slides to the ground through the position of the stop lever.
Description
Technical Field
The invention is mainly used for preventing the roller shutter door from falling down to hurt people.
Background
The anti-falling device for the rolling door which is applied or used at present has a complex structure and high maintenance cost.
Disclosure of Invention
The invention solves the problems, has simple structure, can prevent the roller shutter door from falling down in various states, and has safe and reliable protection; the anti-falling device comprises an anti-falling device (1) and a gear strip (18), wherein the gear strip (18) is fixed at the right end of a hinge (11) at the lowest part of a door curtain (15), gear teeth of the gear strip (18) are meshed with a gear (9) of the anti-falling device (1), and the up-and-down movement of the gear strip (18) drives the gear (9) to rotate forwards and backwards; the anti-falling device (1) consists of a stop lever (6), a shaft A (7), a shaft B (8), a gear (9) and an electromagnet device (16), wherein the shaft A (7) is hinged with upper and lower side walls B (20) of a door curtain sliding sleeve (12), the shaft A (7) can rotate around a hinged point, the gear (9) is fixed in the middle of the shaft A (7), the height of the gear (9) is greater than the opening width of the door curtain sliding sleeve (12), a bevel gear A (10) is fixed at the lower end of the gear (9), a bevel gear B (19) is fixed at the right end of the shaft B (8), the shaft A (7) and the shaft B (8) are mutually vertical, the bevel gear A (10) and the bevel gear B (19) are mutually meshed, the shaft B (8) penetrates through a hole of a side wall A (13) of the door curtain sliding sleeve (12) and can rotate around the hole thereof, the left end of the shaft B (8) is fixed with the stop lever (6), and the right circumference of the shaft B (8) is, the tooth grooves (14) are meshed with the tooth protrusions (17) at the upper ends of the permanent magnets (4), and the vertical rotation of the gear (9) drives the shaft B (8) to horizontally rotate; the electromagnet device (16) is composed of a shell (2), an electromagnet (3), a permanent magnet (4) and a spring (5), the lower end of the shell (2) is fixed with the inner wall of a side wall B (20) of a door curtain sliding sleeve (12), the shell (2) is open towards the door curtain (15), the electromagnet (3) is fixed at the bottom of the shell (2), the lower end of the spring (5) is fixed with the upper end of the electromagnet (3), the upper end of the spring (5) is fixed with the lower end of the permanent magnet (4), the upper end of the permanent magnet (4) is provided with a tooth projection (17), and the permanent magnet (4) can slide along the inner wall of the shell (2); the anti-falling device (1) is arranged at a certain height of the door curtain sliding sleeve (12); the working principle is as follows: before a door curtain (15) of the roller shutter door is not opened, the electromagnet (3) is in a power-on state, the electromagnet (3) and the permanent magnet (4) are mutually attracted, the spring (5) is in an elastic compression state, a tooth protrusion (17) of the permanent magnet (4) is not meshed with a tooth groove (14) of the shaft B (8), the stop lever (6) is in a downward vertical state, when the door curtain (15) of the roller shutter door is driven by a driving device to rise, a gear strip (18) at the lower end of the door curtain (15) touches the teeth of the gear (9) and drives the gear (9) to rotate, the gear (9) drives the shaft B (8) and the stop lever (6) to rotate for 90 degrees, the stop lever (6) is in a horizontal state and is arranged below the door curtain (15), the electromagnet (3) is powered off at the moment, the electromagnet (3) and the permanent magnet (4) lose attraction force, the spring (5) elastically extends to push out the permanent magnet (4, the tooth protrusion (17) at the front end of the permanent magnet (4) is meshed with the tooth groove (14) of the shaft B (8), the door curtain (15) of the rolling door continuously rises, the gear strip (18) is separated from the gear teeth of the gear (9), at the moment, the tooth protrusion (17) at the front end of the permanent magnet (4) is meshed with the tooth groove (14) of the shaft B (8), the stop lever (6) is still in a horizontal state and below the door curtain (15), and the stop lever (6) can prevent the door curtain (15) from falling to hurt people no matter whether a chain wheel of a driving device of the door curtain (15) is unhooked, broken or in other abnormal conditions; when a door curtain (15) of the roller shutter door is driven by a driving device to descend and approach to the position of the stop lever (6), the electromagnet (3) is electrified, the electromagnet (3) and the permanent magnet (4) attract each other to retract the permanent magnet (4), the tooth protrusion (17) at the front end of the permanent magnet (4) is separated from the tooth groove (14) of the shaft B (8), the spring (5) elastically retracts, the shaft B (8) and the stop lever (6) lose restraint, the stop lever (6) sags under the action of gravity, the stop lever (6) drives the shaft A (7) and the gear (9) to reset, and the door curtain (15) smoothly slides to the ground through the position of the stop lever (6); the power supply of the electromagnet (3) is an emergency power supply, and is different from the power supply of the driving device of the rolling door.
Drawings
1-anti-falling device, 2-shell, 3-electromagnet, 4-permanent magnet, 5-spring, 6-stop lever, 7-axis A, 8-axis B, 9-gear, 10-bevel gear A, 11-loose leaf, 12-curtain sliding sleeve, 13-side wall A, 14-tooth slot, 15-curtain, 16-electromagnet device, 17-tooth projection, 18-gear strip, 19-bevel gear B, 20-side wall B.
FIG. 1 is a schematic elevational view of the fall arrest device and gear rack disposed on the door curtain.
FIG. 2 is a diagrammatic horizontal section of the blocking lever of the safety device in a horizontal blocking position.
FIG. 3 is a diagrammatic horizontal cross-sectional view of the blocking lever of the fall arrest device in a downward vertical position.
Fig. 4 is a large view of the electromagnet device.
Detailed Description
Referring to fig. 1 to 4, before the door curtain 15 of the roller shutter door is not opened, the electromagnet 3 is in an energized state, the electromagnet 3 and the permanent magnet 4 attract each other, the spring 5 is in an elastically compressed state, the tooth protrusion 17 of the permanent magnet 4 is not engaged with the tooth groove 14 of the shaft B8, the stop lever 6 is in a downward vertical state, when the door curtain 15 of the roller shutter door is driven by the driving device to ascend, the gear strip 18 at the lower end of the door curtain 15 contacts the tooth of the gear 9 and drives the gear 9 to rotate, the gear 9 drives the shaft B8 and the stop lever 6 to rotate 90 degrees, the stop lever 6 is in a horizontal state and below the door curtain 15, at this time, the electromagnet 3 is powered off, the electromagnet 3 loses attraction force with the permanent magnet 4, the spring 5 elastically extends to push the permanent magnet 4 out, the tooth protrusion 17 at the front end of the permanent magnet 4 is engaged with the tooth groove 14 of the shaft B8, the door curtain 15 of the roller shutter door, at the moment, the tooth projection 17 at the front end of the permanent magnet 4 is meshed with the tooth groove 14 of the shaft B8, the stop lever 6 is still in a horizontal state and is arranged below the door curtain 15, and the stop lever 6 can prevent the door curtain 15 from falling to hurt people no matter the chain wheel of the driving device of the door curtain 15 is unhooked, broken or in other abnormal conditions; when the door curtain 15 of the roller shutter door is driven by a driving device to descend and approaches to the position of the stop lever 6, the electromagnet 3 is electrified, the electromagnet 3 and the permanent magnet 4 attract each other to retract the permanent magnet 4, the tooth protrusion 17 at the front end of the permanent magnet 4 is separated from the tooth groove 14 of the shaft B8, the spring 5 elastically retracts, the shaft B8 and the stop lever 6 lose restraint, the stop lever 6 droops under the action of gravity, meanwhile, the stop lever 6 drives the shaft A7 and the gear 9 to reset, and the door curtain 15 smoothly slides to the ground through the position of the stop lever 6; the power supply of the electromagnet 3 is an emergency power supply, which is different from the power supply of the driving device of the rolling door.
Claims (1)
1. Rotary rod formula rolling slats door anti-falling device, characterized by: the anti-falling device comprises an anti-falling device (1) and a gear strip (18), wherein the gear strip (18) is fixed at the right end of a hinge (11) at the lowest part of a door curtain (15), gear teeth of the gear strip (18) are meshed with a gear (9) of the anti-falling device (1), and the up-and-down movement of the gear strip (18) drives the gear (9) to rotate forwards and backwards; the anti-falling device (1) consists of a stop lever (6), a shaft A (7), a shaft B (8), a gear (9) and an electromagnet device (16), wherein the shaft A (7) is hinged with upper and lower side walls B (20) of a door curtain sliding sleeve (12), the shaft A (7) can rotate around a hinged point, the gear (9) is fixed in the middle of the shaft A (7), the height of the gear (9) is greater than the opening width of the door curtain sliding sleeve (12), a bevel gear A (10) is fixed at the lower end of the gear (9), a bevel gear B (19) is fixed at the right end of the shaft B (8), the shaft A (7) and the shaft B (8) are mutually vertical, the bevel gear A (10) and the bevel gear B (19) are mutually meshed, the shaft B (8) penetrates through a hole of a side wall A (13) of the door curtain sliding sleeve (12) and can rotate around the hole thereof, the left end of the shaft B (8) is fixed with the stop lever (6), and the right circumference of the shaft B (8) is, the tooth grooves (14) are meshed with the tooth protrusions (17) at the upper ends of the permanent magnets (4), and the vertical rotation of the gear (9) drives the shaft B (8) to horizontally rotate; the electromagnet device (16) is composed of a shell (2), an electromagnet (3), a permanent magnet (4) and a spring (5), the lower end of the shell (2) is fixed with the inner wall of a side wall B (20) of a door curtain sliding sleeve (12), the shell (2) is open towards the door curtain (15), the electromagnet (3) is fixed at the bottom of the shell (2), the lower end of the spring (5) is fixed with the upper end of the electromagnet (3), the upper end of the spring (5) is fixed with the lower end of the permanent magnet (4), the upper end of the permanent magnet (4) is provided with a tooth projection (17), and the permanent magnet (4) can slide along the inner wall of the shell (2); the anti-falling device (1) is arranged at a certain height of the door curtain sliding sleeve (12); the working principle is as follows: before a door curtain (15) of the roller shutter door is not opened, the electromagnet (3) is in a power-on state, the electromagnet (3) and the permanent magnet (4) are mutually attracted, the spring (5) is in an elastic compression state, a tooth protrusion (17) of the permanent magnet (4) is not meshed with a tooth groove (14) of the shaft B (8), the stop lever (6) is in a downward vertical state, when the door curtain (15) of the roller shutter door is driven by a driving device to rise, a gear strip (18) at the lower end of the door curtain (15) touches the teeth of the gear (9) and drives the gear (9) to rotate, the gear (9) drives the shaft B (8) and the stop lever (6) to rotate for 90 degrees, the stop lever (6) is in a horizontal state and is arranged below the door curtain (15), the electromagnet (3) is powered off at the moment, the electromagnet (3) and the permanent magnet (4) lose attraction force, the spring (5) elastically extends to push out the permanent magnet (4, the tooth protrusion (17) at the front end of the permanent magnet (4) is meshed with the tooth groove (14) of the shaft B (8), the door curtain (15) of the rolling door continuously rises, the gear strip (18) is separated from the gear teeth of the gear (9), at the moment, the tooth protrusion (17) at the front end of the permanent magnet (4) is meshed with the tooth groove (14) of the shaft B (8), the stop lever (6) is still in a horizontal state and below the door curtain (15), and the stop lever (6) can prevent the door curtain (15) from falling to hurt people no matter whether a chain wheel of a driving device of the door curtain (15) is unhooked, broken or in other abnormal conditions; when a door curtain (15) of the roller shutter door is driven by a driving device to descend and approach to the position of the stop lever (6), the electromagnet (3) is electrified, the electromagnet (3) and the permanent magnet (4) attract each other to retract the permanent magnet (4), the tooth protrusion (17) at the front end of the permanent magnet (4) is separated from the tooth groove (14) of the shaft B (8), the spring (5) elastically retracts, the shaft B (8) and the stop lever (6) lose restraint, the stop lever (6) sags under the action of gravity, the stop lever (6) drives the shaft A (7) and the gear (9) to reset, and the door curtain (15) smoothly slides to the ground through the position of the stop lever (6); the power supply of the electromagnet (3) is an emergency power supply, and is different from the power supply of the driving device of the rolling door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215363.XA CN109750971B (en) | 2019-03-21 | 2019-03-21 | Anti-falling device for rotary rod type rolling door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215363.XA CN109750971B (en) | 2019-03-21 | 2019-03-21 | Anti-falling device for rotary rod type rolling door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109750971A CN109750971A (en) | 2019-05-14 |
| CN109750971B true CN109750971B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910215363.XA Active CN109750971B (en) | 2019-03-21 | 2019-03-21 | Anti-falling device for rotary rod type rolling door |
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| CN (1) | CN109750971B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111437540A (en) * | 2020-04-09 | 2020-07-24 | 杨寿宝 | Fire valve of ventilating duct |
| CN113716228A (en) * | 2020-05-25 | 2021-11-30 | 侯湖滨 | Railway container convenient to load and unload |
| CN112554769A (en) * | 2020-11-25 | 2021-03-26 | 中船澄西船舶修造有限公司 | Rolling slats door protection device that falls |
| CN114199788B (en) * | 2021-12-09 | 2024-09-24 | 中科计算技术西部研究院 | Multispectral-based pest detection and identification method, multispectral-based pest detection and identification system and storage medium |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795487A (en) * | 1972-05-08 | 1973-05-29 | Gfa Antriebstechnik G M B H | LOCKING DEVICE FOR A WINDING MECHANISM |
| FR2703726B1 (en) * | 1993-04-05 | 1995-06-02 | Plumer Sa | Motorized roller shutter comprising means delivering an electrical signal representative of the movement of the deck. |
| CN202493213U (en) * | 2011-12-07 | 2012-10-17 | 漳州市长泰新麒麟机械有限公司 | Anti-falling device of novel rolling door |
| CN106193981B (en) * | 2016-08-29 | 2018-04-06 | 宜昌四八二〇机电有限公司 | Door roller anti-fall device |
| CN206707595U (en) * | 2017-04-20 | 2017-12-05 | 广州中船文冲船坞有限公司 | Shutter door falling proof device |
| CN206753468U (en) * | 2017-05-01 | 2017-12-15 | 陈志忠 | Security shutter |
| CN207647436U (en) * | 2017-10-03 | 2018-07-24 | 漳州市龙文区睿谋机电技术服务部 | Anti-falling device for rolling door |
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- 2019-03-21 CN CN201910215363.XA patent/CN109750971B/en active Active
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| CN109750971A (en) | 2019-05-14 |
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Effective date of registration: 20220512 Address after: 528000 plant 3, first floor, building 21, Yuejin Road, Shiwan Town Street, Chancheng District, Foshan City, Guangdong Province Patentee after: Foshan jianweida door industry Co.,Ltd. Address before: 448000 69 Jingmen Road, Dugao District, Jingmen high tech Zone, Jingmen, Hubei Patentee before: HUBEI SIZE NEW ENERGY TECHNOLOGY Co.,Ltd. |