CN109750970B - Four-connecting-rod type anti-falling device for roller shutter door - Google Patents
Four-connecting-rod type anti-falling device for roller shutter door Download PDFInfo
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- CN109750970B CN109750970B CN201910187288.0A CN201910187288A CN109750970B CN 109750970 B CN109750970 B CN 109750970B CN 201910187288 A CN201910187288 A CN 201910187288A CN 109750970 B CN109750970 B CN 109750970B
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- bar linkage
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Abstract
The invention discloses a four-link 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; it comprises four connecting rods, electro-magnet, permanent magnet, spring, the switch that sticks up the arm, and its theory of operation is: when the door curtain of the rolling door rises, the bottom plate at the lower end of the door curtain touches the rocker switch to cut off the power of the electromagnet, the electromagnet and the permanent magnet lose attraction force, the shaft C and the shaft D of the four-bar linkage are pushed out outwards, the shaft B of the four-bar linkage slides upwards in the chute, the stop block is positioned right below the bottom plate at the lower end of the door curtain, no matter whether a chain wheel of a driving device of the door curtain is unhooked, broken or in other abnormal conditions, the stop block can prevent the door curtain from falling down to hurt people, when the door curtain of the rolling door descends and approaches the position of the stop block, the rocker switch is connected with a power supply of the electromagnet, the electromagnet and the permanent magnet attract each other, the shaft C and the shaft D of the four-bar linkage retract inwards, and the door curtain smoothly slides.
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 device consists of a four-bar linkage (1), an electromagnet (3), a permanent magnet (4), a spring (5) and a rocker switch (8); a sliding groove (2) is formed in a side wall (13) of a door curtain sliding sleeve (12), a shaft A (6) of a four-bar linkage (1) is fixed with the side wall (13) of the door curtain sliding sleeve (12) of the roller shutter door, a shaft B (7) of the four-bar linkage (1) can slide in the sliding groove (2), an electromagnet (3) is fixed with a shaft C (14) of the four-bar linkage (1), a permanent magnet (4) is fixed with a shaft D (16) of the four-bar linkage (1), one end of a spring (5) is fixed with the electromagnet (3), the other end of the spring (5) is fixed with the permanent magnet (4), a stop block (17) is fixed on an upper left connecting rod of the four-bar linkage (1), and the four-bar linkage (1) is installed at a certain height of the door curtain; the rocker switch (8) is fixed on the inner side surface of the side wall (13) of the door curtain sliding sleeve (12), a rocker (9) of the rocker switch (8) can touch the bottom plate (10) at the lower end of the door curtain (15), the rocker switch (8) is positioned above the four-bar (1), and the rocker switch (8) controls the power supply of the electromagnet (3); the working principle is as follows: when a door curtain (15) of the roller shutter door is in a closed state, an electromagnet (3) is in a powered-on state, the electromagnet (3) and a permanent magnet (4) are mutually attracted, a spring (5) is in an elastic compression state, a shaft C (14) and a shaft D (16) of a four-bar linkage (1) are in a retraction state, when the door curtain (15) of the roller shutter door is driven by a driving device to ascend, a bottom plate (10) at the lower end of the door curtain (15) touches a rocker arm (9) of a rocker arm switch (8), the rocker arm switch (8) cuts off the power supply of the electromagnet (3), the electromagnet (3) and the permanent magnet (4) lose attraction force, the spring (5) elastically extends to push the shaft C (14) and the shaft D (16) of the four-bar linkage (1) outwards, a shaft B (7) of the four-bar linkage (1) slides upwards in a sliding chute (2), and a stop block (17) is positioned right below the bottom plate (10) at the lower end of the door, at the moment, no matter the chain wheel of the driving device of the door curtain (15) is unhooked, broken or under other abnormal conditions, the stop block (17) can prevent the door curtain (15) from falling down to hurt people, when the door curtain (15) of the rolling door is driven by the driving device to descend and approaches to the position of the stop block (17), the arm raising switch (8) is connected with the power supply of the electromagnet (3), the electromagnet (3) and the permanent magnet (4) attract each other, the shaft C (14) and the shaft D (16) of the four-bar linkage (1) retract inwards, meanwhile, the spring (5) retracts elastically, the shaft B (7) of the four-bar linkage (1) slides downwards in the sliding chute (2), and the door curtain (15) slides downwards to the ground smoothly through the position of the stop block (17); 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-four connecting rods, 2-chutes, 3-electromagnets, 4-permanent magnets, 5-springs, 6-shafts A, 7-shafts B, 8-rocker switches, 9-rockers, 10-bottom plates, 11-hinges, 12-curtain sliding sleeves, 13-side walls, 14-shafts C, 15-curtains, 16-shafts D and 17-stop blocks.
FIG. 1 is an elevational view of a four-bar and rocker switch disposed on a door curtain.
FIG. 2 is a diagrammatic horizontal cross-section of the four-bar linkage of the fall arrest device in an extended condition.
FIG. 3 is a diagrammatic horizontal cross-section of the four-bar linkage of the fall arrest device in a retracted condition.
FIG. 4 is an elevational schematic view of the four-bar linkage of the fall arrest device in a retracted state.
FIG. 5 is an elevational schematic view of the four-bar linkage of the fall arrest device in an extended condition.
Detailed Description
Referring to fig. 1 to 5, when the curtain 15 of the roller shutter door is in a closed state, 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 shaft C14 and the shaft D16 of the four-bar linkage 1 are in a retracted state, when the curtain 15 of the roller shutter door is driven by the driving device to ascend, the bottom plate 10 at the lower end of the curtain 15 touches the rocker arm 9 of the rocker arm switch 8, the rocker arm switch 8 cuts off the power supply of the electromagnet 3, the electromagnet 3 and the permanent magnet 4 lose attraction, the spring 5 elastically extends to push the shaft C14 and the shaft D16 of the four-bar linkage 1 outwards, the shaft B7 of the four-bar linkage 1 slides upwards in the chute 2, the stop block 17 is located right below the bottom plate 10 at the lower end of the curtain 15, and at this time, the stop block 17 can block the curtain 15 from falling down and hurt people regardless of the unhooking, or other abnormal conditions of the, when the door curtain 15 of the rolling door is driven by a driving device to descend and approach the position of the stop block 17, the rocker switch 8 is switched on the power supply of the electromagnet 3, the electromagnet 3 and the permanent magnet 4 attract each other, the shaft C14 and the shaft D16 of the four-bar linkage 1 retract inwards, meanwhile, the spring 5 elastically retracts, the shaft B7 of the four-bar linkage 1 slides downwards in the sliding chute 2, and the door curtain 15 smoothly slides to the ground through the position of the stop block 17; need to explain: the four-bar linkage 1 is arranged at the height of more than 2 m of the door curtain sliding sleeve 12, so that the falling door curtain 15 is prevented from hurting the head of a person.
Claims (1)
1. The utility model provides a four connecting rod formula rolling slats door anti-falling device, characterized by: the device consists of a four-bar linkage (1), an electromagnet (3), a permanent magnet (4), a spring (5) and a rocker switch (8); a sliding groove (2) is formed in a side wall (13) of a door curtain sliding sleeve (12), a shaft A (6) of a four-bar linkage (1) is fixed with the side wall (13) of the door curtain sliding sleeve (12) of the roller shutter door, a shaft B (7) of the four-bar linkage (1) can slide in the sliding groove (2), an electromagnet (3) is fixed with a shaft C (14) of the four-bar linkage (1), a permanent magnet (4) is fixed with a shaft D (16) of the four-bar linkage (1), one end of a spring (5) is fixed with the electromagnet (3), the other end of the spring (5) is fixed with the permanent magnet (4), a stop block (17) is fixed on an upper left connecting rod of the four-bar linkage (1), and the four-bar linkage (1) is installed at a certain height of the door curtain; the rocker switch (8) is fixed on the inner side surface of the side wall (13) of the door curtain sliding sleeve (12), a rocker (9) of the rocker switch (8) can touch the bottom plate (10) at the lower end of the door curtain (15), the rocker switch (8) is positioned above the four-bar (1), and the rocker switch (8) controls the power supply of the electromagnet (3); the working principle is as follows: when a door curtain (15) of the roller shutter door is in a closed state, an electromagnet (3) is in a powered-on state, the electromagnet (3) and a permanent magnet (4) are mutually attracted, a spring (5) is in an elastic compression state, a shaft C (14) and a shaft D (16) of a four-bar linkage (1) are in a retraction state, when the door curtain (15) of the roller shutter door is driven by a driving device to ascend, a bottom plate (10) at the lower end of the door curtain (15) touches a rocker arm (9) of a rocker arm switch (8), the rocker arm switch (8) cuts off the power supply of the electromagnet (3), the electromagnet (3) and the permanent magnet (4) lose attraction force, the spring (5) elastically extends to push the shaft C (14) and the shaft D (16) of the four-bar linkage (1) outwards, a shaft B (7) of the four-bar linkage (1) slides upwards in a sliding chute (2), and a stop block (17) is positioned right below the bottom plate (10) at the lower end of the door, at the moment, no matter the chain wheel of the driving device of the door curtain (15) is unhooked, broken or under other abnormal conditions, the stop block (17) can prevent the door curtain (15) from falling down to hurt people, when the door curtain (15) of the rolling door is driven by the driving device to descend and approaches to the position of the stop block (17), the arm raising switch (8) is connected with the power supply of the electromagnet (3), the electromagnet (3) and the permanent magnet (4) attract each other, the shaft C (14) and the shaft D (16) of the four-bar linkage (1) retract inwards, meanwhile, the spring (5) retracts elastically, the shaft B (7) of the four-bar linkage (1) slides downwards in the sliding chute (2), and the door curtain (15) slides downwards to the ground smoothly through the position of the stop block (17); 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 |
|---|---|---|---|
| CN201910187288.0A CN109750970B (en) | 2019-03-13 | 2019-03-13 | Four-connecting-rod type anti-falling device for roller shutter door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910187288.0A CN109750970B (en) | 2019-03-13 | 2019-03-13 | Four-connecting-rod type anti-falling device for roller shutter door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109750970A CN109750970A (en) | 2019-05-14 |
| CN109750970B true CN109750970B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910187288.0A Active CN109750970B (en) | 2019-03-13 | 2019-03-13 | Four-connecting-rod type anti-falling device for roller shutter door |
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| CN (1) | CN109750970B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155917A (en) * | 2020-02-11 | 2020-05-15 | 安徽理工大学 | High-altitude anti-falling intelligent windproof lock window |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440688A (en) * | 2008-12-12 | 2009-05-27 | 沈凯锋 | Falling-proof safety device of upper folding door |
| CN204531719U (en) * | 2015-01-07 | 2015-08-05 | 南京化工职业技术学院 | A kind of escape lock |
| CN206722727U (en) * | 2017-03-09 | 2017-12-08 | 漳州闳星门业有限公司 | A kind of security rolling screen door with falling proof device |
| CN107901890A (en) * | 2017-10-27 | 2018-04-13 | 深圳市奈士迪技术研发有限公司 | A kind of new-energy automobile with anti-pitfall and compartment Space adjustment |
| CN207377474U (en) * | 2017-09-30 | 2018-05-18 | 漳州市龙文区睿谋机电技术服务部 | A kind of rolling screen door that can prevent door roller brake failure |
| CN207582296U (en) * | 2017-12-15 | 2018-07-06 | 中国铁道科学研究院铁道建筑研究所 | A kind of connecting rod construction of railway steel bridge beam-ends telescopic device |
-
2019
- 2019-03-13 CN CN201910187288.0A patent/CN109750970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101440688A (en) * | 2008-12-12 | 2009-05-27 | 沈凯锋 | Falling-proof safety device of upper folding door |
| CN204531719U (en) * | 2015-01-07 | 2015-08-05 | 南京化工职业技术学院 | A kind of escape lock |
| CN206722727U (en) * | 2017-03-09 | 2017-12-08 | 漳州闳星门业有限公司 | A kind of security rolling screen door with falling proof device |
| CN207377474U (en) * | 2017-09-30 | 2018-05-18 | 漳州市龙文区睿谋机电技术服务部 | A kind of rolling screen door that can prevent door roller brake failure |
| CN107901890A (en) * | 2017-10-27 | 2018-04-13 | 深圳市奈士迪技术研发有限公司 | A kind of new-energy automobile with anti-pitfall and compartment Space adjustment |
| CN207582296U (en) * | 2017-12-15 | 2018-07-06 | 中国铁道科学研究院铁道建筑研究所 | A kind of connecting rod construction of railway steel bridge beam-ends telescopic device |
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| CN109750970A (en) | 2019-05-14 |
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