CN112093615A - Multistage speed limit anti-falling device of construction elevator - Google Patents
Multistage speed limit anti-falling device of construction elevator Download PDFInfo
- Publication number
- CN112093615A CN112093615A CN202010979307.6A CN202010979307A CN112093615A CN 112093615 A CN112093615 A CN 112093615A CN 202010979307 A CN202010979307 A CN 202010979307A CN 112093615 A CN112093615 A CN 112093615A
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- Prior art keywords
- limiting
- speed
- main shaft
- magnet
- ring
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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
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of building equipment and discloses a multistage speed-limiting and anti-falling device of a construction elevator, which comprises an outer shell, wherein the inner part of the outer shell is movably connected with a main shaft, the outer part of the main shaft is movably connected with a clamp braking device, the outer part of the main shaft is fixedly connected with a copper sheet ring, the outer part of the copper sheet ring is movably connected with an electromagnetic ring, the outer part of the electromagnetic ring is fixedly connected with a positioning sleeve, the inner part of the positioning sleeve is provided with an inductor, and the inner part of the positioning sleeve is fixedly connected with a speed-limiting electromagnet. The copper sheet ring, the electromagnetic ring, the positioning sleeve, the inductor, the speed-limiting electromagnet, the speed-limiting magnet, the speed-limiting lantern ring and the push rod are used in a matched mode, so that the effect of automatically limiting the rotating speed of the main shaft is achieved, the phenomenon that the rotating speed of the main shaft is too high is effectively avoided, the stability of the rotating speed of the main shaft is guaranteed, the stability of the lifting process of the lifter is guaranteed, the safety of workers and goods is guaranteed, and the using effect of the device is improved.
Description
Technical Field
The invention relates to the technical field of construction equipment, in particular to a multistage speed-limiting anti-falling device of a construction elevator.
Background
The construction elevator plays an important role in the field of buildings and is an important building auxiliary device, and generally adopts a gear, rack or wire rope lifting mode to ensure that a suspension cage vertically or obliquely moves so as to be used as a building machine for conveying constructors, tools, equipment and logistics. The construction elevator can be operated safely, mainly because of being equipped with the anti-falling safety device, the safety factor of the equipment operation is improved, but the existing anti-falling safety device has the defects of complex structure, difficult maintenance, short service life, and often only plays a role in anti-falling, and the lifting speed of the elevator can not be effectively limited, so that the existing anti-falling safety device has poor use effect, slow anti-falling reaction and longer anti-falling braking stroke, and the use safety is reduced.
In order to solve the problems, the inventor provides a multistage speed-limiting anti-falling device for a construction elevator, which has the advantages of simple structure, easiness in maintenance, long service life, good anti-falling effect, quick response, short braking distance and effectiveness in the safety of the device, thereby ensuring the safety of workers and goods, improving the use effect, and effectively controlling the lifting speed of the elevator, thereby further improving the use effect and the use safety of the elevator.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a multistage speed-limiting anti-falling device of a construction elevator comprises an outer shell, a main shaft, a clamp braking device, a copper sheet ring, an electromagnetic ring, a positioning sleeve, an inductor, a speed-limiting electromagnet, a speed-limiting magnet, a speed-limiting lantern ring, a push rod, a reset spring, a limiting block, an anti-falling electromagnet, an anti-falling magnet, a fluid electric contact block, a limiting rod and an electrorheological body.
The positions and the connection relations of the structures are as follows:
the inner part of the outer shell is movably connected with a main shaft, the outer part of the main shaft is movably connected with a clamp braking device, the outer part of the main shaft is fixedly connected with a copper sheet ring, the outer part of the copper sheet ring is movably connected with an electromagnetic ring, the outer part of the electromagnetic ring is fixedly connected with a positioning sleeve, the inner part of the positioning sleeve is provided with an inductor, the inner part of the positioning sleeve is fixedly connected with a speed-limiting electromagnet, the outer part of the speed-limiting electromagnet is movably connected with a speed-limiting magnet, the outer part of the speed-limiting magnet is fixedly connected with a speed-limiting lantern ring, the outer part of the speed-limiting lantern ring is hinged with a push rod, the outer part of the speed-limiting lantern ring is fixedly connected with a reset spring, the outer part of the main shaft is fixedly connected with a limiting block, the outside of the anti-falling magnet is fixedly connected with a limiting rod, and the outside of the limiting rod is movably connected with an electrorheological body.
Preferably, the outer part of the main shaft is fixedly connected with an outer positioning gear, and the positioning gear is meshed with a rack of the lifting track.
Preferably, the clamp brake device is designed as a universal brake device.
Preferably, the number of the electromagnetic rings is six, the rack cores are arranged in the electromagnetic rings, the electromagnetic rings are electrically connected with the inductor, the six electromagnetic rings are movably connected to the outer portion of the copper sheet ring, and the six electromagnetic rings are fixedly connected with the positioning sleeve.
Preferably, the positioning sleeve is connected to the outside of the main shaft in a sleeved mode, and the positioning sleeve and the electromagnetic ring are connected through a telescopic rod.
Preferably, the inductor is provided with an annular magnet and a coil, the coil is arranged inside the positioning sleeve, the coil is electrically connected with the speed-limiting electromagnet, the annular magnet is arranged outside the main shaft and matched with the coil, and meanwhile, the speed-limiting electromagnet is in homopolar connection with the speed-limiting magnet.
Preferably, the speed-limiting lantern ring is sleeved outside the main shaft, one end, far away from the speed-limiting lantern ring, of the push rod is hinged to the speed-limiting electromagnet, and one end, far away from the speed-limiting lantern ring, of the reset spring is fixedly connected inside the outer shell.
Preferably, the anti-falling electromagnet is electrically connected with the sensor, and the anti-falling electromagnet and the anti-falling magnet are connected in the same pole.
Preferably, the limiting rod is movably connected with the limiting block, a limiting groove is formed in the outer portion of the limiting block, a clamping block is arranged on the outer side of the limiting block, and the clamping block is matched with the limiting groove.
Preferably, the electrorheological fluid is arranged in the outer shell, the main components of the electrorheological fluid are paste, lime, carbon powder and olive oil, the limiting rod is arranged on the part, located on the electrorheological fluid, of the limiting rod and is provided with a fork rod, an electrifying block is arranged in the electrorheological fluid, and the electrifying block is electrically connected with the fluid electric contact block.
Advantageous effects
Compared with the prior art, the invention provides a multistage speed-limiting anti-falling device of a construction elevator, which has the following beneficial effects:
1. the multistage speed-limiting anti-falling device of the construction elevator is used in cooperation with the copper sheet ring, the electromagnetic ring, the positioning sleeve, the sensor, the speed-limiting electromagnet, the speed-limiting magnet, the speed-limiting lantern ring and the push rod, so that the effect of automatically limiting the rotating speed of the main shaft is achieved, the phenomenon that the rotating speed of the main shaft is too high is effectively avoided, the stability of the rotating speed of the main shaft is guaranteed, the stability of the lifting process of the elevator is guaranteed, the safety of workers and goods is guaranteed, and the using effect of the device is improved.
2. This multistage speed limit anti-falling device of construction elevator, through the stopper, prevent weighing down the electro-magnet, prevent weighing down the magnet, the fluid electric touch piece, the cooperation of gag lever post and current variant is used, thereby reached and made the main shaft can in time scram under the effect of gag lever post and stopper, reaction rate is fast, prevent weighing down effectually, braking distance is short, the security performance is high, effectively guarantee workman's life safety, guarantee the device's result of use, while inner structure is simple, easy maintenance, the fault rate is low, long service life is high, thereby further increase the device's safety coefficient.
Drawings
FIG. 1 is a schematic view of the overall connection of the structure of the present invention;
FIG. 2 is a schematic view of the connection of part A-A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged schematic connection diagram of part B of the structure of FIG. 1;
FIG. 4 is a schematic view of the connection of part C-C of FIG. 1 according to the present invention;
fig. 5 is an enlarged connection diagram of part D of the structure diagram 4 of the present invention.
In the figure: 1. an outer housing; 2. a main shaft; 3. a clamp brake device; 4. a copper sheet ring; 5. an electromagnetic ring; 6. a positioning sleeve; 7. an inductor; 8. a speed-limiting electromagnet; 9. a speed limiting magnet; 10. a speed-limiting collar; 11. a push rod; 12. a return spring; 13. a limiting block; 14. the anti-falling electromagnet; 15. an anti-falling magnet; 16. a fluid electrical contact block; 17. a limiting rod; 18. an electrorheological fluid.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a multistage speed-limiting and anti-falling device for a construction elevator comprises an outer shell 1, a main shaft 2, a clamp braking device 3, a copper sheet ring 4, an electromagnetic ring 5, a positioning sleeve 6, an inductor 7, a speed-limiting electromagnet 8, a speed-limiting magnet 9, a speed-limiting lantern ring 10, a push rod 11, a reset spring 12, a limiting block 13, an anti-falling electromagnet 14, an anti-falling magnet 15, a fluid electric contact block 16, a limiting rod 17 and an electrorheological body 18.
The positions and the connection relations of the structures are as follows:
the inner part of the outer shell 1 is movably connected with a main shaft 2, the outer part of the main shaft 2 is movably connected with a clamp braking device 3, the outer part of the main shaft 2 is fixedly connected with a copper sheet ring 4, the outer part of the copper sheet ring 4 is movably connected with an electromagnetic ring 5, the outer part of the electromagnetic ring 5 is fixedly connected with a positioning sleeve 6, the inner part of the positioning sleeve 6 is provided with an inductor 7, the inner part of the positioning sleeve 6 is fixedly connected with a speed-limiting electromagnet 8, the outer part of the speed-limiting electromagnet 8 is movably connected with a magnetic speed-limiting iron 9, the outer part of the speed-limiting magnet 9 is fixedly connected with a speed-limiting lantern ring 10, the outer part of the speed-limiting lantern ring 10 is articulated with a push rod 11, the outer part of the speed-limiting lantern ring 10 is fixedly connected with a reset spring 12, the outer part of the main shaft, the outside of the anti-falling magnet 15 is fixedly connected with a limiting rod 17, and the outside of the limiting rod 17 is movably connected with a current variant 18.
Wherein:
and a, fixedly connecting the outer part of the main shaft 2 with an outer positioning gear, and engaging and connecting the positioning gear with a rack of the lifting track.
b, the gripper braking device 3 is designed as a universal braking device.
c, six electromagnetic rings 5 are arranged, a rack core is arranged inside each electromagnetic ring 5, the electromagnetic rings 5 are electrically connected with the inductor 7, the six electromagnetic rings 5 are movably connected to the outer portion of the copper sheet ring 4, and the six electromagnetic rings 5 are fixedly connected with the positioning sleeve 6.
d, the positioning sleeve 6 is connected to the outer portion of the main shaft 2 in a sleeved mode, and the positioning sleeve 6 and the electromagnetic ring 5 are connected through a telescopic rod.
And e, the inductor 7 is provided with an annular magnet and a coil, the coil is arranged inside the positioning sleeve 6, the coil is electrically connected with the speed-limiting electromagnet 8, the annular magnet is arranged outside the main shaft 2 and matched with the coil, and meanwhile, the speed-limiting electromagnet 8 and the speed-limiting magnet 9 are connected in the same pole.
f, the speed-limiting lantern ring 10 is sleeved outside the main shaft 2, one end of the push rod 11, far away from the speed-limiting lantern ring 10, is hinged with the speed-limiting electromagnet 8, and one end of the return spring 12, far away from the speed-limiting lantern ring 10, is fixedly connected inside the outer shell 1.
And g, the anti-falling electromagnet 14 is electrically connected with the inductor 7, and the anti-falling electromagnet 14 is in homopolar connection with the anti-falling magnet 15.
h, the limiting rod 17 is movably connected with the limiting block 13, a limiting groove is formed in the outer portion of the limiting block 13, a clamping block is arranged on the outer side of the limiting block 13, and the clamping block is matched with the limiting groove.
i, an electrorheological body 18 is arranged inside the outer shell 1, the main components of the electrorheological body 18 are paste, lime, carbon powder and olive oil, meanwhile, a fork rod is arranged on the part, located on the electrorheological body 18, of the limiting rod 17, an electrifying block is arranged inside the electrorheological body 18, and the electrifying block is electrically connected with the fluid electric contact block 16.
During the use process, the outer part of the main shaft 2 is fixedly connected with the outer positioning gear, and the positioning gear is meshed with racks of the lifting track, so that the main shaft 2 synchronously rotates in the lifting process of the lifter, the copper sheet ring 4 is driven to rotate in the rotating process of the main shaft 2, six electromagnetic rings 5 are arranged, a rack core is arranged inside the electromagnetic ring 5, the electromagnetic rings 5 are electrically connected with an inductor 7, the six electromagnetic rings 5 are movably connected to the outer part of the copper sheet ring 4, and the six electromagnetic rings 5 are fixedly connected with the positioning sleeve 6, so that the copper sheet ring 4 generates current in the rotating process, Lorentz force is generated in the rotating process of the copper sheet ring 4 according to Lenz's law, and the effect of limiting the rotating speed of the copper sheet ring 4 is achieved, namely the lifting speed of the lifter is limited through the main shaft 2.
When the rotating speed is increased, because the inductor 7 is provided with the annular magnet and the coil, the coil is arranged inside the positioning sleeve 6, the coil is electrically connected with the speed-limiting electromagnet 8, the annular magnet is arranged outside the main shaft 2, the annular electromagnet is matched with the coil, and simultaneously the speed-limiting electromagnet 8 is in homopolar connection with the speed-limiting magnet 9, the inductor 7 generates current increase, so that the magnetism of the electromagnetic ring 5 is increased, the repulsive force between the speed-limiting electromagnet 8 and the speed-limiting magnet 9 is increased, the speed-limiting magnet 9 pushes the speed-limiting sleeve ring 10, the electromagnetic ring 5 moves towards the main shaft 2 when the speed-limiting sleeve ring 10 passes through the push rod 11, the magnetic field intensity of the copper sheet ring 4 is increased according to the calculation formula of the Lorentz force, wherein F is the Lorentz force, Q is the electric charge quantity of the charged particles, V is the speed of the charged particles, B is the magnetic induction intensity, when the electromagnetic ring 5 moves towards the main, simultaneously because 2 rotational speeds of main shaft increase, then the inside electric charge volume of copper sheet ring 4 increases, and charged particle speed increases to make lorentz force F increase, thereby reach the effect of the 2 rotational speeds of automatic restriction main shaft, effectively avoid 2 rotational speeds of main shaft too fast, guarantee 2 slew velocity's of main shaft stability, guarantee lift in-process's stability, thereby guarantee the safety of workman and goods, improve the device's result of use.
When the lifting device is in failure, the lifter falls, the synchronous rotating speed of the main shaft 2 is increased, the current generated by the sensor 7 is continuously increased, because the anti-falling electromagnet 14 is electrically connected with the inductor 7, the anti-falling electromagnet 14 is in homopolar connection with the anti-falling magnet 15, therefore, the anti-falling electromagnet 14 pushes the anti-falling magnet 15, the anti-falling magnet 15 pushes the limiting rod 17, the limiting rod 17 is contacted with the limiting block 13, meanwhile, the fluid electric contact block 16 generates an electric field to harden the current variant 18, so that the effect of limiting the limiting rod 17 is achieved, the main shaft 2 can be stopped suddenly in time under the action of the limiting rod 17 and the limiting block 13, the reaction speed is high, the anti-falling effect is good, the braking distance is short, the safety performance is high, the life safety of workers is effectively guaranteed, the using effect of the device is guaranteed, meanwhile, the internal structure is simple, the maintenance is easy, the failure rate is low, the service life is long, and the safety factor of the device is further increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a multistage speed limit anti-falling device of construction elevator, includes shell body (1), its characterized in that: the inner movable connection main shaft (2) of the outer shell (1), the outer movable connection of the main shaft (2) is provided with a clamp braking device (3), the outer fixed connection of the main shaft (2) is provided with a copper sheet ring (4), the outer movable connection of the copper sheet ring (4) is provided with an electromagnetic ring (5), the outer fixed connection of the electromagnetic ring (5) is provided with a positioning sleeve (6), the inner part of the positioning sleeve (6) is provided with an inductor (7), the inner part of the positioning sleeve (6) is fixedly connected with a speed-limiting electromagnet (8), the outer movable connection of the speed-limiting electromagnet (8) is provided with a speed-limiting magnet (9), the outer fixed connection of the speed-limiting magnet (9) is provided with a speed-limiting lantern ring (10), the outer part of the speed-limiting lantern ring (10) is hinged with a push rod (11), and the outer, the utility model discloses a safety protection device for the elevator, including main shaft (2), the outside fixedly connected with stopper (13) of main shaft (2), the inside fixedly connected with of shell body (1) prevents weighing down electro-magnet (14), the outside swing joint who prevents weighing down electro-magnet (14) prevents weighing down magnet (15), the outside of preventing weighing down magnet (15) is provided with fluid electricity touch multitouch (16), prevent weighing down outside fixedly connected with gag lever post (17) of magnet (15), the outside swing joint of gag lever post (17) has current variant (18).
2. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the outer part of the main shaft (2) is fixedly connected with an outer positioning gear, and the positioning gear is meshed with a rack of the lifting track.
3. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the clamp brake device (3) is designed as a universal brake device.
4. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: six electromagnetic rings (5) are arranged, a rack core is arranged inside the electromagnetic ring (5), the electromagnetic ring (5) is electrically connected with an inductor (7), the six electromagnetic rings (5) are movably connected to the outer portion of the copper sheet ring (4), and the six electromagnetic rings (5) are fixedly connected with a positioning sleeve (6).
5. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the positioning sleeve (6) is connected to the outer portion of the main shaft (2) in a sleeved mode, and the positioning sleeve (6) and the electromagnetic ring (5) are connected through a telescopic rod.
6. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the speed-limiting electric spindle is characterized in that the inductor (7) is provided with an annular magnet and a coil, the coil is arranged inside the positioning sleeve (6), the coil is electrically connected with the speed-limiting electromagnet (8), the annular magnet is arranged outside the spindle (2), the annular electromagnet is matched with the coil, and meanwhile the speed-limiting electromagnet (8) is connected with the speed-limiting magnet (9) in the same pole.
7. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the speed-limiting lantern ring (10) is sleeved outside the main shaft (2), one end, far away from the speed-limiting lantern ring (10), of the push rod (11) is hinged to the speed-limiting electromagnet (8), and one end, far away from the speed-limiting lantern ring (10), of the reset spring (12) is fixedly connected to the inside of the outer shell (1).
8. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the anti-falling electromagnet (14) is electrically connected with the inductor (7), and the anti-falling electromagnet (14) is connected with the anti-falling magnet (15) in the same pole.
9. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the limiting rod (17) is movably connected with the limiting block (13), a limiting groove is formed in the outer portion of the limiting block (13), a clamping block is arranged on the outer side of the limiting block (13), and the clamping block is matched with the limiting groove.
10. The multistage speed-limiting anti-falling device of the construction elevator as claimed in claim 1, which is characterized in that: the electrorheological fluid (18) is arranged in the outer shell (1), the main components of the electrorheological fluid (18) are cream, lime, carbon powder and olive oil, meanwhile, a fork rod is arranged on the part, located on the electrorheological fluid (18), of the limiting rod (17), an electrifying block is arranged in the electrorheological fluid (18), and the electrifying block is electrically connected with the fluid electric contact block (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010979307.6A CN112093615A (en) | 2020-09-17 | 2020-09-17 | Multistage speed limit anti-falling device of construction elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010979307.6A CN112093615A (en) | 2020-09-17 | 2020-09-17 | Multistage speed limit anti-falling device of construction elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112093615A true CN112093615A (en) | 2020-12-18 |
Family
ID=73759729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010979307.6A Withdrawn CN112093615A (en) | 2020-09-17 | 2020-09-17 | Multistage speed limit anti-falling device of construction elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112093615A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827091A (en) * | 2021-01-25 | 2021-05-25 | 列耀乐 | Automatic control emergency stop rope pulley for forest rescue |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09328268A (en) * | 1996-06-11 | 1997-12-22 | Mitsubishi Electric Corp | Safety device for elevator |
| CN203411197U (en) * | 2013-07-22 | 2014-01-29 | 昆山市京浦机械制造厂 | Anti-falling safety device of construction lift |
| CN204434020U (en) * | 2015-01-04 | 2015-07-01 | 文建机电科技(上海)有限公司 | Ultra-Low Speed Anti-falling safety device for construction lift |
| CN206345563U (en) * | 2017-01-05 | 2017-07-21 | 常熟理工学院 | A kind of intelligent elevator speed-limiting device |
| CN108516358A (en) * | 2018-03-19 | 2018-09-11 | 中国神华能源股份有限公司 | Spiral arm anti-fall device and screw unloader |
| CN111532932A (en) * | 2020-03-30 | 2020-08-14 | 日立电梯（中国）有限公司 | Lifting equipment, speed limiting device and trigger mechanism |
-
2020
- 2020-09-17 CN CN202010979307.6A patent/CN112093615A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09328268A (en) * | 1996-06-11 | 1997-12-22 | Mitsubishi Electric Corp | Safety device for elevator |
| CN203411197U (en) * | 2013-07-22 | 2014-01-29 | 昆山市京浦机械制造厂 | Anti-falling safety device of construction lift |
| CN204434020U (en) * | 2015-01-04 | 2015-07-01 | 文建机电科技(上海)有限公司 | Ultra-Low Speed Anti-falling safety device for construction lift |
| CN206345563U (en) * | 2017-01-05 | 2017-07-21 | 常熟理工学院 | A kind of intelligent elevator speed-limiting device |
| CN108516358A (en) * | 2018-03-19 | 2018-09-11 | 中国神华能源股份有限公司 | Spiral arm anti-fall device and screw unloader |
| CN111532932A (en) * | 2020-03-30 | 2020-08-14 | 日立电梯（中国）有限公司 | Lifting equipment, speed limiting device and trigger mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112827091A (en) * | 2021-01-25 | 2021-05-25 | 列耀乐 | Automatic control emergency stop rope pulley for forest rescue |
| CN112827091B (en) * | 2021-01-25 | 2022-07-22 | 列耀乐 | Automatic control emergency stop rope pulley for forest rescue |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201218 |
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| WW01 | Invention patent application withdrawn after publication |