CN106639447B - Lifting anti-falling device - Google Patents
Lifting anti-falling device Download PDFInfo
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- CN106639447B CN106639447B CN201611269086.3A CN201611269086A CN106639447B CN 106639447 B CN106639447 B CN 106639447B CN 201611269086 A CN201611269086 A CN 201611269086A CN 106639447 B CN106639447 B CN 106639447B
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- lifting
- main shaft
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- blocking
- lifting body
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- 230000000903 blocking effect Effects 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract 2
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/42—Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention provides a lifting anti-falling device, and belongs to the technical field of lifting equipment. The anti-falling function of the existing lifting equipment is relatively lacking. The lifting anti-falling device is used for preventing a lifting body from falling in the lifting process and comprises a rack, a lifting gear, a blocking mechanism, a main shaft and a blocking trigger device, wherein the rack is vertically and fixedly arranged, the lifting gear is connected with the lifting body through the main shaft, the main shaft is rotationally connected with the lifting body, the lifting gear is coaxially and fixedly connected with the main shaft, the lifting gear is meshed with the rack, the blocking mechanism is arranged on the lifting body and can lock the main shaft under the condition that the lifting body falls, and the blocking trigger device controls the working state of the blocking mechanism. In case the chain is disconnected, the blocking trigger device can immediately control the blocking mechanism to block the main shaft and the lifting gear, so that the lifting body is prevented from falling, the reaction is rapid, and the safety coefficient is high.
Description
Technical Field
The invention belongs to the technical field of lifting equipment, and relates to a lifting anti-falling device of the lifting equipment.
Background
In recent years, with the high-speed increase of automobile maintenance in China, the construction of urban supporting parking spaces is seriously lagged, particularly, the public parking places and the lack thereof in large urban centers in China are difficult to park, and the problems of parking are continuously aggravated in recent years, so that a series of social problems are caused, even the trip, working efficiency and life quality of people are seriously influenced, and meanwhile, the development of the automobile industry is restrained. Therefore, how to efficiently and environmentally solve the problem of parking is a big problem faced by various large cities, and the stereo garage has the characteristics of floor area saving, convenient in-and-out of the garage, time and labor saving in vehicle storage and taking, flexible configuration and the like, and is an important way and development direction for solving the problem of difficult parking in cities.
Most of the three-dimensional garages are provided with an upper multi-layer parking space and a lower multi-layer parking space, when vehicles are carried to a high-layer parking space, the vertical traction mode is generally adopted to realize lifting, and as the overall weight of the vehicles is heavy, once a traction mechanism breaks down and the vehicles fall, the consequence is not envisaged, the vehicles are damaged, casualties can be caused sometimes, the situation is the main concern that the current masses reject the three-dimensional garages, and other lifting equipment also has the potential safety hazard.
Disclosure of Invention
The invention aims to solve the problems of the prior lifting equipment and provides a lifting anti-falling device with good protection effect.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a fall device is prevented in lift, a serial communication port, it includes rack, lifting gear, stop the mechanism, main shaft and stop trigger device, the vertical fixed setting of rack, lifting gear passes through the main shaft and is connected with the lifting body, the main shaft rotates with the lifting body to be connected, lifting gear links firmly with the main shaft is coaxial, lifting gear and rack meshing, stop the mechanism setting on the lifting body to can lock the main shaft under the lifting body emergence condition of falling, stop trigger device control stop mechanism's operating condition.
In the lifting anti-falling device, the blocking mechanism comprises a brake drum, the brake drum is positioned at the side part of the main shaft, and a braking mechanism capable of braking the main shaft is arranged between the brake drum and the lifting body.
In the lifting anti-falling device, the braking mechanism comprises a blocking part arranged on the brake drum and an opening and closing mechanism for driving the blocking part to be close to or far away from the main shaft, wherein the braking part is arranged on the outer side surface of the main shaft, and the blocking part can be blocked on a movement path of the braking part rotating along with the main shaft when the opening and closing mechanism is driven to be close to the main shaft.
In the lifting anti-falling device, the plurality of brake drums are arranged in a surrounding manner, a hoop hole is formed in the center of the plurality of brake drums, the main shaft penetrates through the hoop hole, the opening and closing mechanism controls the size of the hoop hole, and the blocking part is arranged on the inner wall of the hoop hole.
In the lifting anti-falling device, only one brake drum is arranged. When the brake drum is only one, the opening and closing mechanism can drive the brake drum and the blocking part on the brake drum to be close to or far away from the main shaft in a cylinder or oil cylinder mode, so that the braking of the main shaft is realized.
In the lifting anti-falling device, two brake drums are in C shape, and arc-shaped notches of the brake drums are opposite to each other.
In the lifting anti-falling device, the braking part is a braking rod which is arranged on the main shaft and at least one end of the braking rod is exposed, the blocking part is a blocking rod which is fixedly arranged on the inner side of the brake drum and parallel to the main shaft, and when the hoop hole is reduced, the blocking rod can be closed towards the main shaft and blocked on a movement path of the exposed end of the braking rod along with the rotation of the main shaft.
In the lifting anti-falling device, the opening and closing mechanism comprises a bidirectional push-pull electromagnet, and two push rods of the bidirectional push-pull electromagnet are respectively connected with the same side ends of the two brake drums in a one-to-one correspondence manner.
In the lifting anti-falling device, the opening and closing mechanism further comprises a braking compression spring, wherein the braking compression spring is arranged at the other same side end of the two braking drums opposite to the bidirectional push-pull electromagnet, and the two braking drums are elastically driven to be close at the same side end.
In the lifting anti-falling device, the stop lever is located in a first quadrant and/or a third quadrant of a clockwise rotation direction of the main shaft in a set coordinate system, the set coordinate system takes the axis of the main shaft as an origin, and a direction vertical to the movement direction of the brake drum is an X-axis direction.
In the lifting anti-falling device, the stop lever is located in a second quadrant and/or a fourth quadrant of the anticlockwise rotation direction of the main shaft in a set coordinate system, the set coordinate system takes the axis of the main shaft as an origin, and the direction perpendicular to the movement direction of the brake drum is the X-axis direction.
In the lifting anti-falling device, the blocking triggering device comprises a plurality of power supply wires, the power supply wires are fixed along the traction rope chain of the lifting body in sequence, two adjacent power supply wires are connected end to end and connected in series in sequence to form a power line, and the end of the power line are respectively electrically connected with a power supply and the opening and closing mechanism. The opening and closing mechanism requiring electricity is suitable for the blocking trigger device, when the power is supplied, the spindle is not blocked from rotating, and when the power is off, the opening and closing mechanism blocks the spindle from rotating (namely, the spindle cannot rotate).
In the lifting anti-falling device, the two power supply wiring lines are connected in a separable manner.
In the lifting anti-falling device, the blocking trigger device comprises a controller and a detector for detecting the rotating speed of the main shaft or the lifting speed of the lifting body, and the controller receives the detection signal of the detector and controls the working state of the opening and closing mechanism.
In the lifting anti-falling device, the detector is a photoelectric encoder or a Hall rotation speed sensor, and is arranged between the main shaft and the lifting body and used for detecting the rotation speed of the main shaft.
In the lifting anti-falling device, the detector is a speed sensor and is used for detecting the lifting speed of the lifting body.
Compared with the prior art, once the chain is disconnected, the blocking trigger device can immediately control the blocking mechanism to block the main shaft and the lifting gear, so that the lifting body is prevented from falling, the reaction is rapid, and the safety coefficient is high.
Drawings
Fig. 1 is a schematic structural diagram of a stereo garage to which the present invention is applied.
Fig. 2 is a schematic structural diagram of the cooperation of the lifting body and the lifting guide rail of the stereo garage.
Fig. 3 is a schematic structural view of the present invention.
Fig. 4 is a schematic view of the structure of fig. 3 with the racks and one brake drum removed.
Fig. 5 is a schematic view of the structure of the brake drum in cooperation with the main shaft.
Fig. 6 is a schematic structural view of the cooperation of the protection chain and the lifting body.
Fig. 7 is a schematic view of the structure of the working chain and the lifter.
In the figure, 1, an upright post; 2. a lifting body; 3. a parking frame; 4. a vehicle carrying table; 5. lifting the guide rail; 6. a rack; 7. a lifting gear; 8. a main shaft; 9. a brake drum; 10. a bidirectional push-pull electromagnet; 11. braking the compression spring; 12. a brake lever; 13. a stop lever; 14. a photoelectric encoder; 15. a push rod; 16. a work chain; 17. a guard chain; 18. a reserved rod; 19. a drive sprocket; 20. a driven sprocket; 21. an elastic action block; 22. reserving a spring; 23. a tensioning wheel; 24. a guide rod; 25. tensioning a spring; 26. a weighing sensor; 27. a rotating shaft.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the stereo garage applied by the invention comprises a stand column 1, a lifting body 2 and a parking frame 3, wherein the parking frame 3 is provided with an upper parking space and a lower parking space, each parking space is correspondingly provided with a vehicle carrying table 4, the stand column 1 is provided with a lifting guide rail 5, the lifting body 2 is arranged on the lifting guide rail 5 and can move up and down along the lifting guide rail 5 under the driving of a lifting power mechanism, the lifting body 2 and each vehicle carrying table 4 can be combined or separated through a clutch carrying mechanism, and when combined, the lifting body 2 carries the corresponding vehicle carrying table 4 to move up and down.
As shown in fig. 3 and 4, a rack 6, a lifting gear 7, a blocking mechanism and a blocking trigger device are vertically and fixedly arranged in the upright 1, the lifting gear 7 is meshed with the rack 6 and is connected with the lifting body 2 through a main shaft 8, the main shaft 8 is rotationally connected with the lifting body 2, the lifting gear 7 is fixedly connected with the main shaft 8 coaxially, the blocking mechanism is positioned between the lifting body 2 and the main shaft 8 and can lock the main shaft 8 under the condition that the lifting body 2 falls, and the blocking trigger device controls the working state of the blocking mechanism.
In this embodiment, the blocking mechanism includes two C-shaped brake drums 9, the arcuate recesses of the brake drums 9 are opposite to each other and form a hoop hole in the center, the spindle 8 passes through the hoop hole, two openings of the hoop hole are respectively provided with a bidirectional push-pull electromagnet 10 and a brake compression spring 11, two push rods 15 of the bidirectional push-pull electromagnet 10 are respectively connected with the same side ends of the two brake drums 9 in a one-to-one correspondence manner, the other same side ends are compressed and closed by the two brake compression springs 11, and the two brake drums 9 can freely rotate around the rotating shaft 27. A braking mechanism for braking the spindle 8 when the hoop hole is contracted is provided between the brake drum 9 and the spindle 8. The braking mechanism comprises a braking rod 12 vertically penetrating through the main shaft 8 and at least one end of which is exposed, a clamping groove is formed in the inner side of the braking drum 9, and a stop lever 13 parallel to the main shaft 8 is fixed in the clamping groove. When the hoop hole is contracted, the stop lever 13 can be closed towards the main shaft 8 and blocked on a movement path of the exposed end of the brake lever 12 along with the rotation of the main shaft 8.
In this embodiment, there are two brake drums 9, two blocking rods 13 are also provided, as shown in fig. 5, when the lifting body 2 descends, and the spindle 8 rotates clockwise, a coordinate system is set, the axis of the spindle 8 is taken as the origin, the direction perpendicular to the movement direction of the brake drums 9 is the X-axis direction (in this embodiment, the two brake drums 9 are symmetrically arranged on two sides), the diagonal angles of the two blocking rods 13 are respectively arranged in a first quadrant and a third quadrant of the spindle 8 which illustrate steering, and when the spindle 8 brakes, the acting force direction of the blocking rods 13 by the braking rod 12 does not drive the two brake drums 9 to separate. When the rack 6 is arranged on the other side, the front surface of the main shaft 8 is shown to rotate anticlockwise when the lifting body 2 descends, and the stop lever 13 is arranged in the second quadrant and the fourth quadrant (the coordinate system is built in the same way). When there is only one brake drum 9, there is correspondingly only one stop lever 13, arranged in a single quadrant.
According to the difference of the lifting power mechanism, the blocking trigger device which can be adopted is also different, and the lifting body 2 is driven to lift up and down in a chain traction mode, so that the lifting power mechanism comprises a driving sprocket 19, a driven sprocket 20, a chain and a lifting motor, the driving sprocket 19 and the driven sprocket 20 are respectively arranged at the upper end and the lower end of the upright post 1, the chain is meshed on the driving sprocket 19 and the driven sprocket 20, the lifting motor drives the driving sprocket 19 to rotate, and the lifting body 2 is fixed on one side of the chain. The blocking can be triggered by breaking the chain and then cutting off the power for the lifting power mechanism. The blocking triggering device of this mode includes many power supply wiring, and power supply wiring is fixed along the chain in proper order, and adjacent two power supply wiring head and tail separable grafting and establish ties into the power cord in proper order, and the head and tail both ends of power cord respectively with power supply and above-mentioned two-way push-and-pull electromagnet 10 electric connection. In addition, a photoelectric encoder 14 may be disposed between the spindle 8 and the lifting body 2, where the photoelectric encoder 14 is configured to detect a rotation speed of the spindle 8, send a detection signal to the controller, and control an operation state of the bidirectional push-pull electromagnet 10 by the controller.
When the lifting device works, the lifting motor drives the chain to run, the lifting body 2 is pulled by the chain to move up and down, the carrying platform 4 is carried, the lifting gear 7 and the main shaft 8 lift up and down along with the lifting body 2, and the lifting gear 7 can rotate relative to the lifting body 2, so that the lifting gear 7 moves along the rack 6 in an up-and-down meshing way. Once the chain breaks, two power supply wires near the broken chain are disconnected, the power supply wire is disconnected, the bidirectional push-pull electromagnet 10 is powered off, push rods 15 at two ends are extended to drive two brake drums 9 to be close, so that the hoop holes are reduced, and further the stop lever 13 is abutted to the main shaft 8 and is blocked on a movement path of the exposed end of the brake lever 12 rotating along with the main shaft 8. After the brake rod 12 is blocked by the stop lever 13, the main shaft 8 and the lifting gear 7 stop rotating, and the lifting gear 7 is clamped at the current position of the rack 6, so that the lifting body 2 is also clamped and cannot descend, and the falling accident is prevented.
The photoelectric encoder 14 can assist the power-off mode to perform anti-falling protection or be independently used as a blocking trigger device to control the blocking mechanism to act, and once the falling speed of the lifting body 2 is detected to be too high, the controller can control the bidirectional push-pull electromagnet 10 to be powered off to complete blocking. In addition to this, other detectors can be used, for example, in order to detect the rotational speed of the spindle 8 or the lowering speed of the lifting body 2.
As shown in fig. 6 and 7, besides the anti-falling protection, two chains may be provided, namely a working chain 16 and a protection chain 17 which are of a broken type, wherein the working chain 16 and the protection chain 17 respectively correspond to a group of working chain wheels and protection chain wheels, the working chain wheels and the protection chain wheels respectively comprise a driving chain wheel 19 and a driven chain wheel 20, two ends of the working chain 16 are connected with the lifting body 2 to form a lifting ring chain, a chain body of the working chain 16 is wound on the corresponding working chain wheels, two ends of the protection chain 17 are also connected with the lifting body 2 to form a protection ring chain, a chain body of the protection chain 17 is wound on the corresponding protection chain wheels, and the power device drives the working chain wheels and the protection chain wheels to synchronously rotate.
The traction end of the protection chain 17 is connected with the lifting body 2 through a reserved tensioning mechanism, the reserved tensioning mechanism comprises a reserved rod 18 arranged inside the lifting body 2, the reserved rod 18 is vertically arranged, an elastic action block 21 is arranged at the lower end of the reserved rod, an inverted T shape is formed, a reserved spring 22 is sleeved on the reserved rod 18, the reserved spring 22 is in a compressed state, the upper end of the reserved spring 22 is abutted against the lifting body 2, the lower end of the reserved spring 22 acts on the elastic action block 21, and the upper end of the reserved rod 18 extends out of the lifting body 2 and is connected with the traction end of the protection chain 17.
The lifting body 2 is provided with two tensioning wheels 23 which are in one-to-one correspondence with the protection chain 17 and the working chain 16, the protection chain 17 and the working chain 16 are fixedly connected with the lifting body 2 after bypassing the corresponding tensioning wheels 23 relative to the other end of the traction end, and an elastic tensioning mechanism for driving the corresponding tensioning wheels 23 to move in the shrinking direction of the corresponding protection ring chain and the working ring chain is arranged between each tensioning wheel 23 and the lifting body 2. The elastic tensioning mechanism comprises a guide rod 24, a tensioning spring 25 in a compressed state is sleeved on the guide rod 24, and two ends of the tensioning spring 25 respectively act on the corresponding tensioning wheel 23 and the lifting body 2. A load cell 26 is connected in series between the traction end of the working chain 16 and the lifting body 2.
In the normal state, the working chain 16 is in the working state, the traction lifting body 2 performs lifting movement, and since the tension of the protection chain 17 is smaller than that of the working chain 16, the protection chain 17 is in the operation state with smaller load in the normal state. When the working chain 16 breaks, the protection chain 17 enters a working state, so that the lifting body 2 can be prevented from falling, and the working chain 16 can be replaced to work to continuously finish lifting operation. When the protective chain 17 works, the tension becomes larger, the reserve spring 22 on the reserve rod 18 is further compressed, and the upper end portion of the reserve rod 18 is further extended.
In addition to the hoop-type braking mode, the main shaft 8 can be braked in a mode that the blocking portion stretches horizontally.
It should be understood that in the claims, the specification of the present invention, all "including … …" should be interpreted as open-ended meaning that it is equivalent to "at least … …", and not as closed-ended meaning that it should not be interpreted to "include … …" only.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. A lifting anti-falling device is used for preventing a lifting body (2) from falling in the lifting process and is characterized by comprising a rack (6), a lifting gear (7), a main shaft (8), a blocking mechanism and a blocking triggering device, wherein the rack (6) is vertically and fixedly arranged, the lifting gear (7) is connected with the lifting body (2) through the main shaft (8), the main shaft (8) is rotationally connected with the lifting body (2), the lifting gear (7) is fixedly connected with the main shaft (8) coaxially, the lifting gear (7) is meshed with the rack (6), the blocking mechanism is arranged on the lifting body (2) and can lock the main shaft (8) under the condition that the lifting body (2) falls, the blocking triggering device controls the working state of the blocking mechanism, the blocking mechanism comprises a brake drum (9), the brake drum (9) is positioned at the side part of the main shaft (8), the brake mechanism capable of braking the main shaft (8) is arranged between the brake drum (9) and the lifting body (2), the brake mechanism comprises a blocking part arranged on the brake drum (9) and a brake part which is close to or far away from the main shaft (8), the brake part is arranged on the side of the brake drum (8) and is close to the brake part (8) which is arranged on the side of the brake drum (8) when the brake part is close to the main shaft (8) and is far from the brake part (8), the brake drums (9) are arranged in a surrounding mode and form a hoop hole in the center, the main shaft (8) penetrates through the hoop hole, the opening and closing mechanism controls the size of the hoop hole, the blocking portion is arranged on the inner wall of the hoop hole, the braking portion is a braking rod (12) which is arranged on the main shaft (8) and at least one end of the braking rod is exposed, the blocking portion is a stop rod (13) which is fixedly arranged on the inner side of the brake drum (9) and parallel to the main shaft (8), when the hoop hole is reduced, the stop rod (13) can be closed towards the main shaft (8) and blocked on a movement path of the exposed end of the braking rod (12) along with the main shaft (8), the blocking triggering device comprises a plurality of power supply wires, the power supply wires are sequentially fixed along a traction rope chain of the lifting body (2), the adjacent two power supply wires are connected in series to form a power line in a head-tail mode, and the head-tail two ends of the power line are respectively electrically connected with a power supply and the opening and closing mechanism.
2. The lifting anti-falling device according to claim 1, wherein the opening and closing mechanism comprises a bidirectional push-pull electromagnet (10), and two push rods (15) of the bidirectional push-pull electromagnet (10) are respectively connected with the same side ends of the two brake drums (9) in a one-to-one correspondence manner.
3. The lifting anti-falling device according to claim 2, wherein the opening and closing mechanism further comprises a brake compression spring (11), the brake compression spring (11) is arranged at the other same side end of the two brake drums (9) relative to the bidirectional push-pull electromagnet (10), and the two brake drums (9) are elastically driven to be close at the same side end.
4. Lifting and falling-preventing device according to claim 1, characterized in that the stop lever (13) is located in a first quadrant and/or a third quadrant of the clockwise rotation direction of the main shaft (8) in a set coordinate system or in a second quadrant and/or a fourth quadrant of the anticlockwise rotation direction of the main shaft (8) in a set coordinate system, wherein the set coordinate system takes the axle center of the main shaft (8) as an origin, and the direction perpendicular to the movement direction of the brake drum (9) is the X-axis direction.
5. A lifting fall protection device according to any one of claims 1 to 4, wherein the blocking trigger device comprises a controller and a detector for detecting the rotational speed of the spindle (8) or the lifting speed of the lifting body (2), the controller receiving the detection signal from the detector and controlling the operating state of the opening and closing mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269086.3A CN106639447B (en) | 2016-12-31 | 2016-12-31 | Lifting anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269086.3A CN106639447B (en) | 2016-12-31 | 2016-12-31 | Lifting anti-falling device |
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| Publication Number | Publication Date |
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| CN106639447A CN106639447A (en) | 2017-05-10 |
| CN106639447B true CN106639447B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611269086.3A Active CN106639447B (en) | 2016-12-31 | 2016-12-31 | Lifting anti-falling device |
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| CN109235972A (en) * | 2018-10-15 | 2019-01-18 | 深圳市中科智诚科技有限公司 | A kind of three-dimensional parking apparatus of fall arrest |
| CN109403687B (en) * | 2018-12-27 | 2023-08-22 | 广西科技大学 | Multifunctional intelligent three-dimensional parking device |
| CN113895283A (en) * | 2020-06-22 | 2022-01-07 | 奥动新能源汽车科技有限公司 | Battery replacement equipment anti-falling device, battery replacement equipment and battery replacement equipment anti-falling method |
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| CN103979379A (en) * | 2014-06-06 | 2014-08-13 | 浙江工业大学之江学院 | Elevator brake performance whole process real-time monitoring control system and using method |
| CN104803250A (en) * | 2015-04-23 | 2015-07-29 | 重庆工业自动化仪表研究所 | Anti-falling monitoring device, monitoring system and method for elevator |
| CN105774766A (en) * | 2016-03-07 | 2016-07-20 | 吉林大学 | Heavy-duty bicycle anti-slide device and control method thereof |
| CN206616915U (en) * | 2016-12-31 | 2017-11-07 | 郑俭余 | Lift falling proof device |
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