CN107879228A - A kind of synchronous motor direct-drive type twin-screw elevator of villa - Google Patents
A kind of synchronous motor direct-drive type twin-screw elevator of villa Download PDFInfo
- Publication number
- CN107879228A CN107879228A CN201711102403.7A CN201711102403A CN107879228A CN 107879228 A CN107879228 A CN 107879228A CN 201711102403 A CN201711102403 A CN 201711102403A CN 107879228 A CN107879228 A CN 107879228A
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- Prior art keywords
- screw
- casing
- drive
- elevator
- synchronous motor
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 21
- 239000000178 monomer Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 206010007247 Carbuncle Diseases 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
- B66B11/0446—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with screw-nut or worm-screw gear
-
- 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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
- B66B9/025—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable by screw-nut drives
Abstract
The invention provides a kind of synchronous motor direct-drive type twin-screw elevator of villa, belong to home lift technical field.It solves the technical problems such as existing home lift noise is larger.A kind of synchronous motor direct-drive type twin-screw elevator of villa, including the car coordinated with wall, casing is kidney-shaped, the both ends of casing with linking arm and car respectively by being fixedly linked, two groups of stator winding are symmetrically arranged on the inwall of casing, two rotors are placed in casing, it is and corresponding with two groups of stator winding respectively, on rotor perforation is offered along longitudinal direction, two drive screws are plugged in two perforation respectively, permanent magnet be arranged on corresponding between rotor and stator winding, external screw thread is offered on drive screw, the internal thread coordinated with external screw thread is offered on perforation inwall, the hand of spiral of internal thread in two perforation is opposite, the rotation direction of two rotors after powered up is opposite.The present invention has the advantages that noise is small, operates steadily.
Description
Technical field
The invention belongs to home lift technical field, it is related to a kind of synchronous motor direct-drive type twin-screw elevator of villa.
Background technology
The driving of screw elevator is all that asynchronous machine adds link chain structure.Specifically：The rotating shaft of asynchronous machine drives chain
Bar rotates, and chain-driving nut rotation drives car to move up and down.Asynchronous machine efficiency, power factor are low, and efficiency, work(
Rate factor is greatly lowered as load is reduced, and chain drive makes whole driving structure complicated, and pilot process can consume one
Fixed energy causes energy transfer efficiency to reduce.Elevator processing, actual installation difficulty greatly increase；And user used subsequently
Troublesome maintenance in journey.Asynchronous machine, which adds this structure of chain drive chain wear or engagement to be also present, bad can influence elevator just
Often operation；Chain operationally produces the normal life of noise effect people.
For screw elevator, the country carries out a series of researchs and achieves certain achievement and declared a series of patents.
Such as patent of invention " a kind of screw column elevator " (201420819948.4) and patent of invention " a kind of spiral vertical lift "
(201610842583.1) the different driving structure of screw elevator is proposed, but is all that chain frame is added using asynchronous machine
Structure, it is mentioned above still without solving the problems, such as.
The content of the invention
The purpose of the present invention is to be directed to above mentioned problem existing for existing technology, there is provided a kind of synchronous motor of villa is straight
Drive formula twin-screw elevator, the technical problems to be solved by the invention are how by way of synchronous motor directly drives, and reduce elevator
Run noise, improve stationarity.
The purpose of the present invention can be realized by following technical proposal：A kind of synchronous motor direct-drive type twin-screw of villa
Elevator, including the car coordinated with wall, it is characterised in that this elevator also include casing, two rotors, two groups of stator winding,
Two drive screws and two groups of permanent magnets, the casing are kidney-shaped, and the both ends of the casing are respectively by with linking arm and car
It is fixedly linked, two groups of stator winding are symmetrically arranged on the inwall of the casing, and two rotors are placed in casing, and respectively
It is corresponding with two groups of stator winding, perforation is offered along longitudinal direction on the rotor, two drive screws are plugged in two respectively
In perforation, the permanent magnet be arranged on corresponding between rotor and stator winding, external screw thread, institute are offered on the drive screw
State and the internal thread coordinated with external screw thread is offered on perforation inwall, the hand of spiral of the internal thread in two perforation is on the contrary, two
Rotor rotation direction after powered up on the contrary, the car with being connected between the walls by a guide frame.
Car is connected by linking arm with casing, and rotor rotates after the energization of electronics winding, drive screw and rotor it
Between screw thread coordinate under, the car being indirectly connected with rotor can realize up and down motion, and two drive screws can produce car
Stationarity, the hand of spirals of two drive screws reduces noise on the contrary, further improve transmission stability.
Using stator winding disjunctor birotor, the effect that permagnetic synchronous motor directly drives is realized, it is steady to improve screw elevator operation
Qualitative, efficiency, simplify the driving structure of screw elevator, reduce manufacture, the installation difficulty of screw elevator.
In a kind of synchronous motor direct-drive type twin-screw elevator of above-mentioned villa, the guide frame includes some
The guide rail that is fixed on wall and with being fixed on consolidating with the one-to-one support arm of guide rail, the outer end of the support arm on car
Surely a spherical slippery fellow is provided with, there is the chute being adapted to foxy profile on the guide rail, the slippery fellow is slidably connected at institute
State in chute.
Car stationarity is improved, simplifies structure, practical cost and manufacturing cost can be controlled preferably.
In a kind of synchronous motor direct-drive type twin-screw elevator of above-mentioned villa, the upper end of the drive screw and wall
It is fixedly linked at the top of wall, there is gap between the lower end and ground of the drive screw.
There is a certain distance with ground on the downside of drive screw, drive screw is in nature vertical hanging state, hold all the time
Tension stress state, the straightened condition of screw rod is ensured, avoids external carbuncle from acting on, and cause drive screw torsional deformation.
In a kind of synchronous motor direct-drive type twin-screw elevator of above-mentioned villa, the upper and lower ends of the casing are all provided with
It is equipped with a location structure, the location structure includes the thread bush being set on two drive screws, outside the thread bush
A bearing is arranged with, is fixedly linked by a connecting rod between two bearings, is connected between the connecting rod and casing by a column.
In order to which the high accuracy ensured between rotor and drive screw coordinates, one is provided with the two side portions up and down of casing
Location structure, the location structure can ensure that the section that drive screw is urgently driven keeps straight.
In a kind of synchronous motor direct-drive type twin-screw elevator of above-mentioned villa, the drive screw includes some lists
Body rod, weld between each monomer bar, the both ends of the monomer bar have smooth department, and the length of the smooth department is less than rotor height
Half.
Rotor can accept the external screw thread on drive screw, design the length of rotor internal thread in the design much larger than transmission
The length in the non-threaded area of screw rod, when rotor motion can steadily tide over non-threaded to herein by screw thread official post elevator safety
Area.
One whole screw rod length is generally 9m, an a length of 3m of monomer bar；Distance on the downside of drive screw with ground is generally
5-10mm。
In a kind of synchronous motor direct-drive type twin-screw elevator of above-mentioned villa, this elevator also includes frequency converter, right
Answer position sensor, emergency power supply, hydraulic cylinder and the unilateral bearing of each floor position, the unilateral bearing be used to connecting casing with
Rotor, is provided with a magnetic valve on the main efferent duct of the hydraulic cylinder, and the frequency converter, position sensor and magnetic valve are and institute
State emergency power supply to be connected, the unilateral bearing includes inner ring and the outer ring being set on inner ring, and warp-wise is uniformly opened on the outer ring
Provided with some grooves, offered in the outer ring and the one-to-one avoid holes of groove, the avoid holes and corresponding groove phase
It is logical, a sliding block is slidably connected in the groove, there is a limiting section on the sliding block, the both ends of the limiting section have respectively
One movable part on sliding block, the gap between the limiting section and interior ring outer wall are less than between movable part and interior ring outer wall
Gap, and seamlessly transitted between limiting section and the movable part of both sides, also there is a valve opening on the outer ring, slided in the valve opening
Pushing block is connected with, each valve opening is connected with the main efferent duct of hydraulic cylinder, one of movable part in the single sliding block
There is a roller between interior ring outer wall.
The principle of unilateral bearing is：The hydraulic pressure of the main efferent duct of solenoid valve control, under normality, pushing block compresses cunning all the time
Block, roller is set to be rotated in the movable part of sliding block side, if the inner ring reversion of unilateral bearing, is made by limiting section
With and it is stuck, when unilateral bearing need change allow rotate direction when, a relief valve is provided with main efferent duct, electromagnetism
Valve ends main efferent duct, and the pressure in relief valve venting valve opening, under the thrust of roller, sliding block moves laterally, so that rolling
Post can be moved in another movable part, and then, magnetic valve continues on, and enable pushing block pressed slider, and unilateral bearing is complete
Into the switching of rotation direction.
When having a power failure suddenly in manager, reverse drive between unilateral bearing limitation drive screw and rotor, there is auto-lock function
Prevent car from falling, now frequency converter detects that external power source occurs surprisingly automatically switching to emergency flat layer working condition；It is emergent
Power supply rotor driven rotates, wherein, the system also needs to set a single-chip microcomputer, for planning as a whole position sensor and stator winding,
Car is moved to the position of contiguous floors, and keep stoppage in transit state.
Brief description of the drawings
Fig. 1 is the overall structure diagram of this elevator.
Fig. 2 is the structural representation of drive screw in this elevator.
Fig. 3 is car and attachment structure schematic diagram between the walls in elevator elevator.
Fig. 4 is the sectional drawing of car and wall attachment structure.
Fig. 5 is the sectional view of casing in this elevator.
Fig. 6 is the schematic diagram of location structure in this elevator.
Fig. 7 is the sectional view of unilateral bearing in this elevator.
In figure, 1, car；21st, casing；22nd, rotor；23rd, stator winding；24th, permanent magnet；25th, perforate；26th, linking arm；
3rd, drive screw；31st, monomer bar；32nd, smooth department；41st, guide rail；42nd, support arm；43rd, it is foxy；44th, chute；51st, thread bush；
52nd, connecting rod；53rd, column；61st, inner ring；62nd, outer ring；63rd, groove；64th, avoid holes；65th, sliding block；651st, limiting section；652nd, it is movable
Portion；66th, valve opening；67th, pushing block；68th, roller.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2, the car 1 of wall cooperation is provided with shown in Fig. 3, Fig. 4 and Fig. 5, in wall, this elevator also includes
22, two groups of rotor stator winding, 23, two drive screws 3 of casing 21, two and two groups of permanent magnets 24, casing 21 are kidney-shaped, machine
Respectively by being fixedly linked with linking arm 26 and car 1, two groups of stator winding 23 are symmetrically arranged at casing at the both ends of shell 21
On 21 inwall, two rotors 22 are placed in casing 21, and corresponding with two groups of stator winding 23 respectively, are opened on rotor 22 along longitudinal direction
Provided with perforation 25, two drive screws 3 are plugged in two perforation 25 respectively, and permanent magnet 24 is arranged on corresponding rotor 22 and determined
Between sub- winding 23, external screw thread is offered on drive screw 3, the internal thread coordinated with external screw thread is offered on 25 inwalls of perforating,
Two perforation 25 in internal thread hand of spiral on the contrary, the rotation direction of two rotors 22 after powered up on the contrary, car 1 and wall
It is connected between wall by a guide frame.
Car 1 is connected by linking arm 26 with casing 21, and rotor 22 rotates after the energization of electronics winding, in drive screw 3
Under screw thread between rotor 22 coordinates, the car 1 being indirectly connected with rotor 22 can realize up and down motion, two drive screws
3 can produce the stationarity of car 1, and the hand of spirals of two drive screws 3 is reduced on the contrary, further improve transmission stability
Noise；Using the disjunctor birotor 22 of stator winding 23, the effect that permagnetic synchronous motor directly drives is realized, it is steady to improve screw elevator operation
Qualitative, efficiency, simplify the driving structure of screw elevator, reduce manufacture, the installation difficulty of screw elevator.
As shown in Figure 3 and Figure 4, guide frame includes some guide rails 41 being fixed on wall and with being fixed on car 1
On support arm one-to-one with guide rail 41 42, the outer end of support arm 42 is fixedly installed a spherical slippery fellow 43, guide rail 41
It is upper to be slidably connected at the chute 44 being adapted to foxy 43 profiles, slippery fellow 43 in chute 44；The stationarity of car 1 is improved, is simplified
Structure, practical cost and manufacturing cost can be controlled preferably.
As depicted in figs. 1 and 2, be fixedly linked at the top of the upper end of drive screw 3 and wall, the lower end of drive screw 3 with
There is gap between ground；There is a certain distance the downside of drive screw 3 with ground, drive screw 3 is in nature vertical hanging
State, tensile stress state is born all the time, ensure the straightened condition of screw rod, avoid external carbuncle from acting on, and cause the moment of torsion of drive screw 3
Deformation.
As shown in figures 1 to 6, the upper and lower ends of casing 21 are provided with a location structure, and location structure includes being set in
Thread bush 51 on two drive screws 3, thread bush 51 are arranged with a bearing outside, fixed between two bearings by a connecting rod 52
It is connected, is connected between connecting rod 52 and casing 21 by a column 53；In order to ensure the high accuracy between rotor 22 and drive screw 3
Coordinate, be provided with a location structure in the two side portions up and down of casing 21, the location structure can ensure drive screw 3 urgently
The section of transmission keeps straight.
As shown in Fig. 2 drive screw 3 includes some monomer bars 31, welded between each monomer bar 31, the both ends of monomer bar 31
With smooth department 32, the length of smooth department 32 is less than the half of the height of rotor 22；Rotor 22 can be accepted outer on drive screw 3
Screw thread, length of the length much larger than the non-threaded area of drive screw 3 of the internal thread of rotor 22 is designed in the design, when rotor 22 is transported
Non-threaded area can steadily be tided over by screw thread official post elevator safety herein by moving.
One whole screw rod length is generally 9m, a 31 a length of 3m of monomer bar；The downside of drive screw 3 is general with the distance on ground
For 5-10mm.
As shown in Figure 1 and Figure 7, this elevator also includes frequency converter, corresponds to the position sensor of each floor position, answers urgent telegram
Source, hydraulic cylinder and unilateral bearing, unilateral bearing are used to connect casing 21 and rotor 22, and one is provided with the main efferent duct of hydraulic cylinder
Magnetic valve, frequency converter, position sensor and magnetic valve are connected with emergency power supply, and unilateral bearing includes inner ring 61 and is set in interior
Outer ring 62 on circle 61, warp-wise uniformly offers some grooves 63 on outer ring 62, is offered in outer ring 62 and a pair of groove 63 1
The avoid holes 64 answered, avoid holes 64 are communicated with corresponding groove 63, and a sliding block 65 is slidably connected in groove 63, is had on sliding block 65
Have a limiting section 651, the both ends of limiting section 651 have a movable part 652 on sliding block 65 respectively, limiting section 651 with it is interior
Enclose the gap that the gap between 61 outer walls is less than between movable part 652 and the outer wall of inner ring 61, and the activity of limiting section 651 and both sides
Seamlessly transitted between portion 652, also there is a valve opening 66 on outer ring 62, slidably connect pushing block 67 in valve opening 66, each valve opening 66 is equal
It is connected with the main efferent duct of hydraulic cylinder, has one between the one of movable part 652 and the outer wall of inner ring 61 in single sliding block 65
Roller 68.
The principle of unilateral bearing is：The hydraulic pressure of the main efferent duct of solenoid valve control, under normality, pushing block 67 compresses cunning all the time
Block 65, roller 68 is set to be rotated in the movable part 652 of the side of sliding block 65, if the inner ring 61 of unilateral bearing inverts, by
To the effect of limiting section 651 and it is stuck, when unilateral bearing need change allow rotate direction when, be provided with main efferent duct
One relief valve, magnetic valve end main efferent duct, the pressure in relief valve venting valve opening 66, under the thrust of roller 68, sliding block
65 move laterally, so that roller 68 can be moved in another movable part 652, then, magnetic valve continues on, and makes to push away
Block 67 can pressed slider 65, unilateral bearing complete rotation direction switching.
When having a power failure suddenly in manager, reverse drive between unilateral bearing limitation drive screw 3 and rotor 22, there is self-locking work(
It can prevent car 1 from falling, now frequency converter detects that external power source occurs surprisingly automatically switching to emergency flat layer working condition；Should
Urgent telegram source rotor driven 22 rotates, wherein, the system also need to set a single-chip microcomputer, for plan as a whole position sensor and stator around
Group 23, enables car 1 to move to the position of contiguous floors, and keep stoppage in transit state.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (6)
1. a kind of synchronous motor direct-drive type twin-screw elevator of villa, including the car (1) coordinated with wall, its feature exist
Also include casing (21), two rotors (22), two groups of stator winding (23), two drive screws (3) and two groups forever in, this elevator
Magnet (24), the casing (21) are kidney-shaped, and the both ends of the casing (21) are respectively by solid with linking arm (26) and car (1)
Fixed to be connected, two groups of stator winding (23) are symmetrically arranged on the inwall of the casing (21), and two rotors (22) are placed in machine
In shell (21), and corresponding with two groups of stator winding (23) respectively, along longitudinally offering perforation (25) on the rotor (22), two
The drive screw (3) is plugged in two perforation (25) respectively, the permanent magnet (24) be arranged on corresponding rotor (22) and
Between stator winding (23), external screw thread is offered on the drive screw (3), is offered and outer spiral shell on described perforation (25) inwall
The internal thread that line coordinates, the hand of spiral of two internal threads in (25) of perforating is on the contrary, turn of two rotors (22) after powered up
Dynamic in opposite direction, the car (1) by a guide frame with being connected between the walls.
2. the synchronous motor direct-drive type twin-screw elevator of a kind of villa according to claim 1, it is characterised in that described to lead
Include some guide rails (41) being fixed on wall and with being fixed on being corresponded with guide rail (41) on car (1) to structure
Support arm (42), the outer end of the support arm (42) is fixedly installed a spherical slippery fellow (43), had on the guide rail (41)
There is the chute (44) being adapted to foxy (43) profile, the slippery fellow (43) is slidably connected in the chute (44).
A kind of 3. synchronous motor direct-drive type twin-screw elevator of villa according to claim 1 or claim 2, it is characterised in that institute
State and be fixedly linked at the top of the upper end and wall of drive screw (3), between having between the lower end and ground of the drive screw (3)
Gap.
A kind of 4. synchronous motor direct-drive type twin-screw elevator of villa according to claim 1 or claim 2, it is characterised in that institute
The upper and lower ends for stating casing (21) are provided with a location structure, and the location structure includes being set in two drive screws
(3) thread bush (51) on, the thread bush (51) are arranged with a bearing, fixed between two bearings by a connecting rod (52) outside
It is connected, is connected between the connecting rod (52) and casing (21) by a column (53).
A kind of 5. synchronous motor direct-drive type twin-screw elevator of villa according to claim 1 or claim 2, it is characterised in that institute
Stating drive screw (3) includes some monomer bars (31), is welded between each monomer bar (31), the both ends of the monomer bar (31) have
Smooth department (32), the length of the smooth department (32) are less than the half of rotor (22) height.
A kind of 6. synchronous motor direct-drive type twin-screw elevator of villa according to claim 1 or claim 2, it is characterised in that this
Elevator also includes frequency converter, position sensor, emergency power supply, hydraulic cylinder and the unilateral bearing of corresponding each floor position, the list
It is used to connect casing (21) and rotor (22) to bearing, a magnetic valve, the change is provided with the main efferent duct of the hydraulic cylinder
Frequency device, position sensor and magnetic valve are connected with the emergency power supply, and the unilateral bearing includes inner ring (61) and is set in
Outer ring (62) on inner ring (61), warp-wise uniformly offers some grooves (63) on the outer ring (62), in the outer ring (62)
Offer with the one-to-one avoid holes (64) of groove (63), the avoid holes (64) communicate with corresponding groove (63), described
A sliding block (65) is slidably connected in groove (63), there is a limiting section (651), the limiting section on the sliding block (65)
(651) both ends have a movable part (652) on sliding block (65) respectively, and the limiting section (651) and inner ring (61) are outside
Gap between wall is less than the gap between movable part (652) and inner ring (61) outer wall, and the activity of limiting section (651) and both sides
Portion seamlessly transits between (652), also has a valve opening (66) on the outer ring (62), slidably connects and push away in the valve opening (66)
Block (67), each valve opening (66) are connected with the main efferent duct of hydraulic cylinder, one of living in the single sliding block (65)
There is a roller (68) between dynamic portion (652) and inner ring (61) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102403.7A CN107879228A (en) | 2017-11-10 | 2017-11-10 | A kind of synchronous motor direct-drive type twin-screw elevator of villa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711102403.7A CN107879228A (en) | 2017-11-10 | 2017-11-10 | A kind of synchronous motor direct-drive type twin-screw elevator of villa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107879228A true CN107879228A (en) | 2018-04-06 |
Family
ID=61779750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711102403.7A Pending CN107879228A (en) | 2017-11-10 | 2017-11-10 | A kind of synchronous motor direct-drive type twin-screw elevator of villa |
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| CN (1) | CN107879228A (en) |
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| US20110155509A1 (en) * | 2009-12-29 | 2011-06-30 | Wu-Teng Hsieh | Double Screw Elevator |
| TW201422515A (en) * | 2012-12-04 | 2014-06-16 | Hiwin Tech Corp | Dual rolling screw type lifting mechanism |
| CN103939499A (en) * | 2013-01-22 | 2014-07-23 | 通用汽车环球科技运作有限责任公司 | Selectable one-way torque transmitting device using control rail |
| CN106794964A (en) * | 2014-10-16 | 2017-05-31 | 奥的斯电梯公司 | For the horizontal terminal of the elevator with magnetic screw rod propulsion system |
| CN104860158A (en) * | 2015-04-27 | 2015-08-26 | 胡国良 | Lead screw elevator |
| CN205204567U (en) * | 2015-09-11 | 2016-05-04 | 阿汉德玛扎 | No counter weight elevator and lift driving motor , drive unit and actuating system thereof |
| CN107143589A (en) * | 2016-03-01 | 2017-09-08 | 博格华纳公司 | The optional clutch module actuator of three or more patterns is realized using single hydraulic feed |
| CN106712419A (en) * | 2017-03-02 | 2017-05-24 | 沈阳工业大学 | Horizontal 8-shaped conjoined permanent magnet motor stator |
| CN107738974A (en) * | 2017-11-10 | 2018-02-27 | 浙江永发机电有限公司 | A kind of screw-rod structure in villa screw elevator |
| CN107857184A (en) * | 2017-11-10 | 2018-03-30 | 浙江永发机电有限公司 | A kind of power-off leveling device of villa screw elevator |
| CN207390749U (en) * | 2017-11-10 | 2018-05-22 | 浙江永发机电有限公司 | A kind of power-off leveling device of villa screw elevator |
| CN207390779U (en) * | 2017-11-10 | 2018-05-22 | 浙江永发机电有限公司 | A kind of screw-rod structure in villa screw elevator |
| CN207390778U (en) * | 2017-11-10 | 2018-05-22 | 浙江永发机电有限公司 | A kind of synchronous motor direct-drive type twin-screw elevator of villa |
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