CN107187984A - A kind of safety cargo elevating mechanism - Google Patents
A kind of safety cargo elevating mechanism Download PDFInfo
- Publication number
- CN107187984A CN107187984A CN201710556088.9A CN201710556088A CN107187984A CN 107187984 A CN107187984 A CN 107187984A CN 201710556088 A CN201710556088 A CN 201710556088A CN 107187984 A CN107187984 A CN 107187984A
- Authority
- CN
- China
- Prior art keywords
- guide rail
- rail bracket
- elevating mechanism
- safety
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
-
- 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
- B66B5/044—Mechanical overspeed governors
-
- 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
-
- 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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention discloses a kind of safety cargo elevating mechanism, including bed frame, the first guide rail bracket and the second guide rail bracket parallel to each other being arranged on bed frame, transport cases are provided between first guide rail bracket and the second guide rail bracket, the upper end of first guide rail bracket and the second guide rail bracket is fixed with upper frame, the upper end of upper frame is provided with conveying mechanism, guide rail bracket is connected with electric control gear, the bottom of guide rail bracket and the junction of bed frame are provided with generating laser, and the lower end of upper frame is provided with the laser pickoff being adapted with generating laser.The elevating mechanism of the present invention can ensure that the course of conveying of goods remains steady, will not run-off the straight, and in power failure or motor failure in emergency circumstances, it is automatic to carry out brake hard, add the operating efficiency of motor, the extra consumption of electric energy is reduced, the safety coefficient of elevating mechanism is added, the service life of release mechanism is extended.
Description
Technical field
The present invention relates to lift field, more particularly to a kind of safety cargo elevating mechanism.
Background technology
At present, elevating mechanism is widely used in the fields such as lifting, loading, transport, and common elevating mechanism has driving, elevator
Deng.Elevating mechanism is mainly made up of lifting motor, reductor, cable wire, reel etc..Its basic functional principle is by controlling lifting
The direction of rotation of motor, drives the positive and negative rotation of reel, realizes folding and unfolding of the reel to cable wire, completes the lifting to lifting thing.But
For certain some important occasion, the lifting of such as visual plant is, it is necessary to more consideration safety and reliabilities, once lifting
Mechanism malfunction, on the one hand must there is more safety precautions, prevent the quick of goods from falling, damage goods；It is another
Aspect allows for fixing a breakdown rapidly, or can start second set of elevating mechanism, it is ensured that elevating mechanism can be normally continuous
Work.
When existing elevator guide bracket is unstable, not used for the instrument that detection elevator guide bracket is unstable on lift
Device, not meeting cage and having in the dual-purpose building hoist of people's goods of vertically-guided " should have effective measures, that can examine in cage general provisions
Unstable guide rail bracket section is measured, and can prevent cage from entering the guide rail bracket section or can guarantee that cage without departing from firm guide rail
The standard requirement of frame section ".
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of safety cargo elevating mechanism, the elevating mechanism can be protected
The course of conveying of card goods remains steady, will not run-off the straight, and in power failure or motor failure in emergency circumstances,
It is automatic to carry out brake hard, the operating efficiency of motor is added, the extra consumption of electric energy is reduced, adds elevating mechanism
Safety coefficient, extend the service life of release mechanism.
The present invention solves technical problem and adopted the following technical scheme that：
The invention provides a kind of safety cargo elevating mechanism, including bed frame, be arranged on it is parallel to each other on bed frame
The first guide rail bracket and the second guide rail bracket, between the first guide rail bracket and the second guide rail bracket be provided with transport cases, the first guide rail bracket with
The upper end of second guide rail bracket is fixed with upper frame, and the upper end of upper frame is provided with conveying mechanism, and the guide rail bracket is connected with electric control gear, institute
State the bottom of guide rail bracket and the junction of bed frame and be provided with generating laser, the lower end of the upper frame is provided with and generating laser
The laser pickoff being adapted, the vertical center line of generating laser is overlapped with the vertical center line of laser pickoff；It is described defeated
Mechanism is sent to include being arranged on first motor of upper frame one end and the second motor of the upper frame other end.
Further, the upper center of the upper frame is provided with balance weight, the weight of the balance weight and the motor
Weight it is identical.
Further, the electric control gear is provided with controller, and the controller is electrically connected with laser pickoff, motor
Connect.
Further, the conveying mechanism includes being arranged on first roller and the second roller at two ends, the first roller and the
Second wheel is connected with the first motor and the second motor respectively, drives transport cases to move up and down.
Further, the emitting area of the generating laser is circular arc, the corresponding central angle of the circular arc for 0~
45°。
Further, the laser pickoff is provided with the LED stroboscopic lamps for being used for sensing generating laser.
Further, the elevating mechanism also includes emergency braking apparatus, and the emergency braking apparatus includes being arranged on top
Decelerator, limiter of speed and the safety steel cable being connected with transport cases upper end of frame bottom, the decelerator and limiter of speed with
Electric control gear is connected.
Further, the emergency braking apparatus also includes an alarm lamp, is electrically connected with decelerator and limiter of speed.
Further, the bottom of the transport cases is provided with several spring buffers.
Compared with prior art, the present invention has the advantages that：
（1）The safety cargo elevating mechanism of the present invention, it is ensured that the course of conveying of goods remains steady, will not incline
Tiltedly, and in power failure or motor failure in emergency circumstances, brake hard is carried out automatically, add the work effect of motor
Rate, reduces the extra consumption of electric energy, adds the safety coefficient of elevating mechanism, extend the service life of release mechanism.
（2）The generating laser of the present invention is adapted setting with laser pickoff, when laser pickoff offset by laser hair
During emitter effective launching zone, LED stroboscopic lamps can enter line flicker alarm, signal be fed back into electric control gear, electric control gear is timely
Cut off the electricity supply, effectively ensure the stabilization of guide rail bracket and the safety of goods.
（3）The balance weight set on the upper frame of the present invention, it is identical with the weight of motor, keep the torque at upper frame two ends
It is identical, it is ensured that the balance monitoring of upper frame.
（4）The first roller and the second roller of the present invention, it can be ensured that in the first motor and the second motor
Drive simultaneously under, synergy pulls the transport cases for carrying goods steadily to move up and down by rope.
（5）The circular arc emitting area of the generating laser of the present invention, effectively can control guide rail bracket inclined in safety
In the range of shifting, it is quick on the draw, using effect is good.
（6）The emergency braking apparatus of the present invention, including decelerator, limiter of speed, safety steel cable, alarm lamp, decelerator energy
It is enough to reduce acceleration automatically when transport cases rise to topmost or drop to bottom, contribute to even running；Limiter of speed
Monitor the translational speed of casing in real time, when there is supervelocity situation, i.e., rated speed of lift 115% when, can send in time
Signal, then produces mechanical action cut-out power supply circuit, is braked by safety steel cable, it is to avoid mechanism is damaged and goods damage.
（7）The present invention spring buffer be a kind of spring buffer, when casing forced landing, spring buffer by
To impact, the kinetic energy and potential energy of casing can be converted into elastic potential energy of the spring, it is ensured that casing steadily lands as early as possible, it is to avoid repeatedly
The injury that resilience is caused.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, it is for the present invention in describing below
Accompanying drawing is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creative work
Under the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the safety cargo elevating mechanism of embodiment 1；
Fig. 2 is the structural representation of the safety cargo elevating mechanism of embodiment 1；
Fig. 3 is the structural representation of conveying mechanism；
Reference：1st, bed frame, the 2, first guide rail bracket, the 3, second guide rail bracket, 4, transport cases, 5, upper frame, 6, conveyer
Structure, 7, electric control gear, 8, generating laser, 9, laser pickoff, the 10, first motor, the 11, second motor, 12, flat
Weigh block, 13, emergency braking apparatus, 41, spring buffer, the 61, first roller, the 62, second roller, 71, controller, 91, stroboscopic
Lamp, 131, decelerator, 132, limiter of speed, 133, safety steel cable, 134, alarm lamp.
Embodiment
In order that the purpose, technical scheme and advantage of the embodiment of the present invention are more clearly understood that, with reference to embodiment and accompanying drawing,
Embodiments of the invention are further described in detail.Here, the present invention illustrative examples and illustrate be used for explain
The present invention, but it is not as a limitation of the invention.
Embodiment 1
As shown in figure 1, the safety cargo elevating mechanism of the present embodiment, including bed frame 1, be arranged on it is mutual on bed frame 1
Parallel the first guide rail bracket 2 and the second guide rail bracket 3, the first guide rail bracket 2 and the second guide rail bracket 3 are fixed on bed frame vertically
On 1.Transport cases 4 are provided between first guide rail bracket 2 and the second guide rail bracket 3, transport cases 4 can be the case of plank frame composition
Body, is formed by screw fastening, facilitates ventilated during cargo transport.The bottom of transport cases 4 is provided with several springs
Buffer 41.Spring buffer is a kind of spring buffer, and when casing forced landing, spring buffer is impacted, case
The kinetic energy and potential energy of body can be converted into elastic potential energy of the spring, it is ensured that casing steadily lands as early as possible, it is to avoid resilience repeatedly is caused
Injury.
As shown in figure 1, the upper end of the first guide rail bracket 2 and the second guide rail bracket 3 is fixed with upper frame 5, the upper end of upper frame 5 is provided with defeated
Mechanism 6 is sent, guide rail bracket is connected with electric control gear 7.Electric control gear 7 is provided with controller 71, the controller 71 and laser pick-off
Device 9, motor electrical connection.The upper center of upper frame 5 is provided with balance weight 12, the weight of balance weight 12 and the weight of motor
It is identical.Balance weight is identical with the weight of motor to keep the torque at upper frame two ends identical, it is ensured that the balance of upper frame
Monitoring.Wherein, bed frame, guide rail bracket, upper frame are concrete-bar component, and with excellent weight capacity, and compression strength is high.
As shown in figure 1, the bottom of guide rail bracket and the junction of bed frame 1 are provided with generating laser 8, the lower end of upper frame 5
Provided with the laser pickoff 9 being adapted with generating laser 8, the vertical center line of generating laser 8 and erecting for laser pickoff 9
Straight center line is overlapped.The emitting area of generating laser is circular arc, and the corresponding central angle of the circular arc is 0~45 °.Laser
The circular arc emitting area of transmitter, can be quick on the draw effectively by guide rail bracket control in the range of safe deflection, use effect
It is really good.Laser pickoff is provided with the LED stroboscopic lamps for being used for sensing generating laser.Generating laser is mutually fitted with laser pickoff
With setting, when laser pickoff offset by generating laser effective launching zone, LED stroboscopic lamps can enter line flicker alarm, will
Signal feeds back to electric control gear, and electric control gear is cut off the electricity supply in time, effectively ensures the stabilization of guide rail bracket and the safety of goods.
As shown in figures 1 and 3, conveying mechanism 6 is another including the first motor 10 and upper frame for being arranged on upper frame one end
Second motor 11 at end, in addition to it is arranged on first roller 61 and the second roller 62 at two ends, the first roller 61 and second
Roller 62 is connected with the first motor 10 and the second motor 11 respectively, drives transport cases 4 to move up and down.
The safety cargo elevating mechanism of the present embodiment can ensure that the course of conveying of goods remains steady, will not occur
Tilt, and in power failure or motor failure in emergency circumstances, brake hard is carried out automatically, add the work of motor
Efficiency, reduces the extra consumption of electric energy, adds the safety coefficient of elevating mechanism, extend the service life of release mechanism.
Embodiment 2
As shown in Fig. 2 the safety cargo elevating mechanism of the present embodiment, except the structure with embodiment 1, in addition to brake hard
Device 13, the emergency braking apparatus 13 includes the decelerator 131, limiter of speed 132 and and transport case for being arranged on upper frame bottom
The safety steel cable 133 of the upper end of body 4 connection, decelerator 131 and limiter of speed 132 are connected with electric control gear 7, in addition to an alarm lamp
134, electrically connected with decelerator 131 and limiter of speed 132.
Decelerator 131 can rise to topmost in transport cases or reduce acceleration automatically when dropping to bottom, have
Help even running；Limiter of speed 132 monitors the translational speed of casing in real time, and when there is supervelocity situation, i.e., elevator is specified
Speed 115% when, signal can be sent in time, then produce mechanical action cut-out power supply circuit, made by safety steel cable 133
It is dynamic, it is to avoid mechanism is damaged and goods damage.
The safety cargo elevating mechanism of the present embodiment, it is ensured that the course of conveying of goods remains steady, Bu Huifa
It is raw to tilt, and in power failure or motor failure in emergency circumstances, brake hard is carried out automatically, add the work of motor
Make efficiency, reduce the extra consumption of electric energy, add the safety coefficient of elevating mechanism, extend the use longevity of release mechanism
Life.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of safety cargo elevating mechanism, including bed frame, the first guide rail parallel to each other for being arranged on bed frame
Frame and the second guide rail bracket, are provided with transport cases, the first guide rail bracket and the second guide rail bracket between the first guide rail bracket and the second guide rail bracket
Upper end be fixed with upper frame, the upper end of upper frame is provided with conveying mechanism, it is characterised in that the guide rail bracket is connected with electric control gear,
The bottom of the guide rail bracket and the junction of bed frame are provided with generating laser, and the lower end of the upper frame is provided with and Laser emission
The laser pickoff that device is adapted, the vertical center line of generating laser is overlapped with the vertical center line of laser pickoff；It is described
Conveying mechanism includes being arranged on first motor of upper frame one end and the second motor of the upper frame other end.
2. safety cargo elevating mechanism according to claim 1, it is characterised in that the upper center of the upper frame is provided with flat
Weigh block, and the weight of the balance weight is identical with the weight of the motor.
3. safety cargo elevating mechanism according to claim 1 or 2, it is characterised in that the electric control gear is provided with control
Device processed, the controller is electrically connected with laser pickoff, motor.
4. safety cargo elevating mechanism according to claim 1, it is characterised in that the conveying mechanism includes being arranged on two
First roller and the second roller at end, the first roller and the second roller connect with the first motor and the second motor respectively
Connect, drive transport cases to move up and down.
5. safety cargo elevating mechanism according to claim 1, it is characterised in that the emitting area of the generating laser
For circular arc, the corresponding central angle of the circular arc is 0~45 °.
6. safety cargo elevating mechanism according to claim 1, it is characterised in that the laser pickoff, which is provided with, to be used for
Sense the LED stroboscopic lamps of generating laser.
7. safety cargo elevating mechanism according to claim 1, it is characterised in that the elevating mechanism also includes urgent system
Dynamic device, the emergency braking apparatus includes being arranged on the decelerator of upper frame bottom, limiter of speed and connected with transport cases upper end
The safety steel cable connect, the decelerator and limiter of speed are connected with electric control gear.
8. safety cargo elevating mechanism according to claim 7, it is characterised in that the emergency braking apparatus also includes one
Alarm lamp, is electrically connected with decelerator and limiter of speed.
9. safety cargo elevating mechanism according to claim 1, it is characterised in that if the bottom of the transport cases is provided with
Dry spring buffer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556088.9A CN107187984A (en) | 2017-07-10 | 2017-07-10 | A kind of safety cargo elevating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710556088.9A CN107187984A (en) | 2017-07-10 | 2017-07-10 | A kind of safety cargo elevating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107187984A true CN107187984A (en) | 2017-09-22 |
Family
ID=59882726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710556088.9A Withdrawn CN107187984A (en) | 2017-07-10 | 2017-07-10 | A kind of safety cargo elevating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107187984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748212A (en) * | 2017-11-06 | 2019-05-14 | 上海市山之田模型设计有限公司 | A kind of model elevator with laser detection and protective device |
| CN111792587A (en) * | 2020-06-12 | 2020-10-20 | 黄明法 | Small-size lift that civil engineering used |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1179569A (en) * | 1997-09-03 | 1999-03-23 | Techman Kogyo Kk | Cargo elevator |
| JP2001163542A (en) * | 1999-12-13 | 2001-06-19 | Iwao Miyazaki | Lift for scaffold for riding cargo and worker |
| CN2635809Y (en) * | 2003-07-02 | 2004-08-25 | 广州市京龙工程机械有限公司 | Double-track frame lift for construction |
| JP2007223776A (en) * | 2006-02-24 | 2007-09-06 | Mitsubishi Electric Building Techno Service Co Ltd | Vibration detection device for elevator car and vibration control device for elevator car |
| CN102032879A (en) * | 2010-10-18 | 2011-04-27 | 北京理工大学 | Device for testing torsional angle of mast system based on high speed camera and design method thereof |
| CN204588347U (en) * | 2015-01-13 | 2015-08-26 | 于江 | For elevator location and long-range management system of patrolling and examining |
| CN105540369A (en) * | 2015-12-29 | 2016-05-04 | 永大电梯设备（中国）有限公司 | Method for detecting absolute position of lift car and control system and method of absolute position of lift |
| CN106064774A (en) * | 2015-04-23 | 2016-11-02 | 通力股份公司 | Facility and method for alignment track in the elevator shaft |
-
2017
- 2017-07-10 CN CN201710556088.9A patent/CN107187984A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1179569A (en) * | 1997-09-03 | 1999-03-23 | Techman Kogyo Kk | Cargo elevator |
| JP2001163542A (en) * | 1999-12-13 | 2001-06-19 | Iwao Miyazaki | Lift for scaffold for riding cargo and worker |
| CN2635809Y (en) * | 2003-07-02 | 2004-08-25 | 广州市京龙工程机械有限公司 | Double-track frame lift for construction |
| JP2007223776A (en) * | 2006-02-24 | 2007-09-06 | Mitsubishi Electric Building Techno Service Co Ltd | Vibration detection device for elevator car and vibration control device for elevator car |
| CN102032879A (en) * | 2010-10-18 | 2011-04-27 | 北京理工大学 | Device for testing torsional angle of mast system based on high speed camera and design method thereof |
| CN204588347U (en) * | 2015-01-13 | 2015-08-26 | 于江 | For elevator location and long-range management system of patrolling and examining |
| CN106064774A (en) * | 2015-04-23 | 2016-11-02 | 通力股份公司 | Facility and method for alignment track in the elevator shaft |
| CN105540369A (en) * | 2015-12-29 | 2016-05-04 | 永大电梯设备（中国）有限公司 | Method for detecting absolute position of lift car and control system and method of absolute position of lift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109748212A (en) * | 2017-11-06 | 2019-05-14 | 上海市山之田模型设计有限公司 | A kind of model elevator with laser detection and protective device |
| CN111792587A (en) * | 2020-06-12 | 2020-10-20 | 黄明法 | Small-size lift that civil engineering used |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170922 |