CN111942988B - Anti-falling device of elevator - Google Patents
Anti-falling device of elevator Download PDFInfo
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- CN111942988B CN111942988B CN202010939286.5A CN202010939286A CN111942988B CN 111942988 B CN111942988 B CN 111942988B CN 202010939286 A CN202010939286 A CN 202010939286A CN 111942988 B CN111942988 B CN 111942988B
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- chain roller
- tensioning
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- 230000006698 induction Effects 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000001133 acceleration Effects 0.000 claims description 14
- 230000010354 integration Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention provides a falling prevention device of an elevator, which comprises a platform, a bracket arranged on the platform, a motor arranged on the bracket, a first double-chain roller, a second double-chain roller, a first tensioning wheel shaft, a second tensioning wheel shaft, a third tensioning wheel shaft and a fourth tensioning wheel shaft, wherein chain wheels on the first double-chain roller and the second double-chain roller are respectively connected with the first tensioning wheel shaft, the second tensioning wheel shaft, the third tensioning wheel shaft and the fourth tensioning wheel shaft which are arranged at the corresponding positions up and down through a transmission belt; one is that the braking is reliable, the double sensors are powered on for signal braking, once the sensors sense that the signals exceed the range, the tensioning motor loosens the tensioning rope, the induction female socket is jointed with the induction plug under the action of the spring, the braking device brakes, and the motor operation is more reliable; its response is quick.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a safety auxiliary device of an elevator, and specifically relates to a falling prevention device of the elevator.
Background
A lifting operation platform of the lifter is a multifunctional lifting mechanical device which can be divided into a plurality of structural forms such as a fixed type, a movable type, a guide rail type, a crank arm type, a scissor fork type, a chain type, a loading and unloading platform and the like, and is used for realizing the functions of cargo transportation and the like.
When the lifter is used for vertically transporting goods, the goods and the lifting platform can vertically fall from the high altitude due to equipment failure, sudden power failure and other reasons of mechanical equipment, the falling lifting platform and the goods can easily injure workers, even serious production accidents are caused, and production safety is endangered. However, the factors such as equipment failure and sudden power failure are inevitable, and in order to reduce the occurrence of the situations that the lifting platform and the goods fall from a high place to injure workers and damage the equipment and the goods, research and development of a falling prevention device for the elevator are urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem that when the existing elevator has equipment failure, heavy objects fall down along with a lifting platform at a high speed to cause great potential safety hazard.
The technical scheme of the invention is realized as follows: a falling prevention device of an elevator comprises a platform, a support arranged on the platform, a motor, a first double-chain roller, a second double-chain roller, a first tensioning wheel shaft, a second tensioning wheel shaft, a third tensioning wheel shaft and a fourth tensioning wheel shaft, wherein the motor, the first double-chain roller, the second double-chain roller, the first tensioning wheel shaft, the second tensioning wheel shaft, the third tensioning wheel shaft and the fourth tensioning wheel shaft are arranged on the support; the lifting platform is provided with an acceleration sensor, a tension sensor and an integration box, the support is provided with a brake motor, one end of a brake belt is connected with the support, and the other end of the brake belt bypasses a first double-chain roller and is connected with a belt pulley on the brake motor; the integrated box is internally provided with a guide rail, a tension rope and a tension motor, the tension rope is provided with a slide fastener, the guide rail is provided with a sensing female seat and a sensing plug, the slide fastener is integrally connected with the sensing plug, and the slide fastener is connected with the inner wall of the integrated box through a spring; the induction female seat is connected with the brake motor through a cable.
Preferably, the same brake device as that on the first double-chain roller is arranged at the corresponding position of the second double-chain roller, the brake device comprises a brake motor and a brake belt, and the double-brake device is safer and more reliable in braking.
Preferably, the stand column is arranged on the support, the wheel disc is arranged on the lifting platform, and the wheels on the wheel disc are in rolling contact with the stand column, so that the lifting platform is more stable when running up and down.
Preferably, the lifting platform is provided with a roller way, so that goods can be conveniently moved.
Preferably, an upper limit switch and a lower limit switch are arranged on the upright post, so that the stroke of the lifting platform is limited, and the operation is safer and more reliable.
If the elevator is not provided with the anti-falling device, when the motor fails, the first double-chain roller and the second double-chain roller can be in a free rotating state, the lifting platform can fall freely under the action of the gravity of the lifting platform and the gravity of goods borne by the lifting platform, the lifting platform falling at a high speed can reach the bottom end quickly, the mechanical energy is high, the transmission belt strip can be broken or the goods borne by the lifting platform can be directly broken, and secondly, the anti-falling device has great life health threat to workers operating or carrying below. For the elevator provided with the anti-falling device, the tension sensor detects the tension on the transmission belt strip, the acceleration sensor detects the acceleration of the lifting platform, once the tension detected by the tension sensor is smaller than a set threshold or the acceleration detected by the acceleration sensor is larger than the set threshold, an electric signal is transmitted to the control system of the integrated box, at the moment, the tensioning motor is started, the tensioning rope is loosened, under the action of the tension of the spring, the slide fastener is separated from the constraint of the tensioning rope which is tensioned before, the slide fastener moves towards the direction far away from the tensioning motor together with the induction plug, the induction plug moves towards the direction of the induction female seat on the guide rail until the induction female seat is jointed with the induction plug, at the moment, the induction female seat transmits the signal to the brake motor, the brake motor rotates to tighten the brake belt, and under the action of friction between the brake belt and the first double-chain roller and/or the second double-chain roller, the descending platform of whereabouts slows down immediately until stopping, avoids the potential safety hazard to take place. Correspondingly, in a normal working state, the motor on the support controls the movement of the transmission belt strip, the tension sensor and the acceleration sensor cannot detect signals at the moment, the tensioning motor is in a natural tensioning state, the sensing female seat cannot be jointed with the sensing plug, and the elevator works normally.
The beneficial effects of the invention are simply and incompletely summarized as follows: one is that the braking is reliable, the double sensors are powered on for signal braking, once the sensors sense that the signals exceed the range, the tensioning motor loosens the tensioning rope, the induction female socket is jointed with the induction plug under the action of the spring, the braking device brakes, and the motor operation is more reliable; the motor and the sensor are matched to transmit signals, so that the brake is immediately performed once a braking condition occurs, and the safety coefficient is improved; and the braking effect is good, the first double-chain roller and the second double-chain roller are both provided with braking devices, and the braking is stable and reliable, good in effect and safer. Has good popularization and practical value, and can generate good economic and social benefits by wide popularization and application.
Drawings
FIG. 1 is a schematic diagram of a structure of a hoist of a fall-preventing device of the present invention;
FIG. 2 is a schematic diagram of a simplified structure of a portion of a lift of the fall arrest device of the lift of the present invention;
FIG. 3 is an elevator main view of a fall arrest device for an elevator in accordance with the present invention;
fig. 4 is a top view of an elevator of a fall arrest device for elevators according to the present invention.
Fig. 5 is a side view of a fall arrest device for an elevator in accordance with the present invention.
Fig. 6 is a schematic diagram of the internal structure of an integrated box of the anti-falling device of the elevator.
The device comprises a motor 0, a platform 1, a bracket 2, a first double-chain roller 3, a second double-chain roller 4, a first tensioning wheel shaft 5, a second tensioning wheel shaft 6, a third tensioning wheel shaft 7, a fourth tensioning wheel shaft 8, a transmission belt 9, a lifting platform 10, a brake motor 11, a brake belt 12, a wheel disc 13, a stand column 14, an upper limit switch 15, a lower limit switch 16, an acceleration sensor A, a tension sensor B, an integrated box C, a guide rail C1, a tension rope C2., a tensioning motor C3., a slide fastener C4, an induction female seat C5., an induction plug C6. and a spring C7.
Detailed Description
For the purpose of enhancing the understanding of the present invention, a fall arrest device for an elevator according to the present invention will be described in further detail with reference to the following examples and accompanying drawings, which are provided for illustration only and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 6, an elevator fall protection device comprises a platform 1, a support 2 arranged on the platform 1, a motor 0, a first double-chain roller 3, a second double-chain roller 4, a first tensioning wheel shaft 5, a second tensioning wheel shaft 6, a third tensioning wheel shaft 7 and a fourth tensioning wheel shaft 8 which are arranged on the support 2, chain wheels on the first double-chain roller 3 and the second double-chain roller 4 are respectively connected with the first tensioning wheel shaft 5, the second tensioning wheel shaft 6, the third tensioning wheel shaft 7 and the fourth tensioning wheel shaft 8 which are arranged at corresponding positions up and down through a transmission belt 9, a lifting platform 10 is arranged on the transmission belt 9, and the motor 0 is in transmission connection with the first double-chain roller 3 and the second double-chain roller 4; an acceleration sensor A, a tension sensor B and an integration box C are arranged on the lifting platform 10, a brake motor 11 is arranged on the support 2, one end of a brake belt 12 is connected with the support 2, and the other end of the brake belt bypasses the first double-chain roller 3 to be connected with a belt pulley on the brake motor 11; a guide rail C1, a tensioning rope C2 and a tensioning motor C3 are arranged in the integration box C, a slide fastener C4 is arranged on the tensioning rope C2, an induction female seat C5 and an induction plug C6 are arranged on the guide rail C1, the slide fastener C4 is integrally connected with the induction plug C6, and the slide fastener C4 is connected with the inner wall of the integration box C through a spring C7; the induction female seat C5 is connected with the brake motor 11 through a cable; the brake device which is the same as that on the first double-chain roller 3 is arranged at the corresponding position of the second double-chain roller 4 and comprises a brake motor and a brake belt; the support 2 is provided with an upright post 14, the lifting platform 10 is provided with a wheel disc 13, and wheels on the wheel disc 13 are in rolling contact with the upright post 14; a roller way is arranged on the lifting platform 10; an upper limit switch 15 and a lower limit switch 16 are arranged on the upright post 14.
If the elevator is not provided with the anti-falling device, when the motor 0 breaks down, the first double-chain roller 3 and the second double-chain roller 4 can be in a free rotating state, under the action of the self gravity of the lifting platform 10 and the gravity of goods carried on the lifting platform, the lifting platform 10 can fall freely, the speed of the lifting platform 10 falling at a high speed can be high when the lifting platform reaches the bottom end, the mechanical energy is high, the transmission belt 9 can be broken or the goods carried by the lifting platform can be directly broken, and secondly, the life health threat can be very great for workers operating or carrying under the lifting platform. For the elevator provided with the anti-falling device, the tension sensor B detects the tension on the transmission belt 9, the acceleration sensor A detects the acceleration of the lifting platform 10, once the tension detected by the tension sensor B is smaller than a set threshold or the acceleration detected by the acceleration sensor A is larger than the set threshold, an electric signal is transmitted to the control system of the integrated box C, at the moment, the tensioning motor C3 is started, the tensioning rope C2 is loosened, under the action of the tension of the spring C7, the slide fastener C4 is separated from the restraint of the tensioning rope C2 which is tensioned before and moves towards the direction far away from the tensioning motor C3 together with the induction plug C6, the induction plug C6 moves towards the direction of the induction female seat C5 on the guide rail C1 until the induction female seat C5 is engaged with the induction plug C6, at the moment, the induction female seat C5 transmits a signal to the brake motor 11, the brake motor 11 rotates to tighten the brake belt 12, under the friction force between the braking belt 12 and the first double-chain roller 3 and/or the second double-chain roller 4, the falling lifting platform 10 is immediately decelerated until stopped, so that potential safety hazards are avoided.
Correspondingly, in a normal working state, the motor 0 on the bracket 2 controls the motion of the transmission belt strip 9, at the moment, the tension sensor B and the acceleration sensor A cannot detect signals, the tensioning motor C3 is in a natural tensioning state, the sensing female socket C5 and the sensing plug C6 cannot be jointed, and the elevator works normally.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The anti-falling device of the elevator is characterized by comprising a platform (1), a support (2) arranged on the platform (1), a motor (0), a first double-chain roller (3), a second double-chain roller (4), a first tensioning wheel shaft (5), a second tensioning wheel shaft (6), a third tensioning wheel shaft (7) and a fourth tensioning wheel shaft (8) which are arranged on the support (2), chain wheels on the first double-chain roller (3) and the second double-chain roller (4) are respectively connected with the first tensioning wheel shaft (5), the second tensioning wheel shaft (6), the third tensioning wheel shaft (7) and the fourth tensioning wheel shaft (8) which are arranged at corresponding positions up and down through a transmission belt strip (9), a lifting platform (10) is arranged on the transmission belt strip (9), and the motor (0) is in transmission connection with the first double-chain roller (3) and the second double-chain roller (4);
an acceleration sensor (A), a tension sensor (B) and an integration box (C) are arranged on the lifting platform (10), a brake motor (11) is arranged on the support (2), one end of a brake belt (12) is connected with the support (2), and the other end of the brake belt bypasses the first double-chain roller (3) and is connected with a belt pulley on the brake motor (11);
a guide rail (C1), a tensioning rope (C2) and a tensioning motor (C3) are arranged in the integration box (C), a slide fastener (C4) is arranged on the tensioning rope (C2), an induction female seat (C5) and an induction plug (C6) are arranged on the guide rail (C1), the slide fastener (C4) is integrally connected with the induction plug (C6), and the slide fastener (C4) is connected with the inner wall of the integration box (C) through a spring (C7);
the induction female seat (C5) is connected with the brake motor (11) through a cable;
and a brake device which is the same as that on the first double-chain roller (3) is arranged at the corresponding position of the second double-chain roller (4), and the brake device comprises a brake motor and a brake belt.
2. A fall arrest device for elevators according to claim 1, characterized in that the support (2) is provided with a post (14) and the elevator platform (10) is provided with a wheel (13), the wheels of the wheel (13) being in rolling contact with the post (14).
3. A fall arrest device for elevators according to claim 2, characterized in that the elevator platform (10) is provided with a roller table.
4. A fall arrest device for elevators according to claim 3, characterized in that the mast (14) is provided with an upper limit switch (15) and a lower limit switch (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010939286.5A CN111942988B (en) | 2020-09-09 | 2020-09-09 | Anti-falling device of elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010939286.5A CN111942988B (en) | 2020-09-09 | 2020-09-09 | Anti-falling device of elevator |
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| Publication Number | Publication Date |
|---|---|
| CN111942988A CN111942988A (en) | 2020-11-17 |
| CN111942988B true CN111942988B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010939286.5A Active CN111942988B (en) | 2020-09-09 | 2020-09-09 | Anti-falling device of elevator |
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| Country | Link |
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| CN (1) | CN111942988B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355473A (en) * | 1999-06-15 | 2000-12-26 | Mitsubishi Electric Corp | Emergency stopper of elevator |
| CN105398921A (en) * | 2015-11-03 | 2016-03-16 | 深圳市步科电气有限公司 | Elevator with double-chain elevating system |
| CN105810466A (en) * | 2016-04-22 | 2016-07-27 | 成都聚智工业设计有限公司 | New type power travel switch |
| CN205442488U (en) * | 2015-12-28 | 2016-08-10 | 重庆起重机厂有限责任公司 | Hoist safety braking's control system |
| CN109573793A (en) * | 2018-05-17 | 2019-04-05 | 浙江威特电梯有限公司 | A kind of energy-conserving elevator |
| CN109678027A (en) * | 2018-12-30 | 2019-04-26 | 青海和众网络科技有限公司 | A kind of anti-falling safe elevator |
-
2020
- 2020-09-09 CN CN202010939286.5A patent/CN111942988B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000355473A (en) * | 1999-06-15 | 2000-12-26 | Mitsubishi Electric Corp | Emergency stopper of elevator |
| CN105398921A (en) * | 2015-11-03 | 2016-03-16 | 深圳市步科电气有限公司 | Elevator with double-chain elevating system |
| CN205442488U (en) * | 2015-12-28 | 2016-08-10 | 重庆起重机厂有限责任公司 | Hoist safety braking's control system |
| CN105810466A (en) * | 2016-04-22 | 2016-07-27 | 成都聚智工业设计有限公司 | New type power travel switch |
| CN109573793A (en) * | 2018-05-17 | 2019-04-05 | 浙江威特电梯有限公司 | A kind of energy-conserving elevator |
| CN109678027A (en) * | 2018-12-30 | 2019-04-26 | 青海和众网络科技有限公司 | A kind of anti-falling safe elevator |
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| Publication number | Publication date |
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| CN111942988A (en) | 2020-11-17 |
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Address after: 361000 702, Hengyi building, No.1-3, Zhongling Road, Huli District, Xiamen City, Fujian Province Patentee after: Xiamen Anke Technology Co.,Ltd. Country or region after: China Address before: 361000 702, Hengyi building, No.1-3, Zhongling Road, Huli District, Xiamen City, Fujian Province Patentee before: XIAMEN ANKE TECHNOLOGY Co.,Ltd. Country or region before: China |
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