CN208249790U - High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device - Google Patents
High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device Download PDFInfo
- Publication number
- CN208249790U CN208249790U CN201820854866.2U CN201820854866U CN208249790U CN 208249790 U CN208249790 U CN 208249790U CN 201820854866 U CN201820854866 U CN 201820854866U CN 208249790 U CN208249790 U CN 208249790U
- Authority
- CN
- China
- Prior art keywords
- surface damage
- slide surface
- detection device
- pantograph
- carbon slide
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses High Speed Railway Trains pantograph carbon slide surface damages to detect with rack device is gone up and down, and including truss mechanism on the base is arranged, truss mechanism includes two fixed frame bodies and hoistable platform and electrical-controlled lifting drive train on the base；Two telescopic arms that can synchronize stretching motion in the horizontal direction are installed on hoistable platform, it is associated with guide rail platform altogether on two telescopic arms, detection device motion guide device, the pantograph carbon slide surface damage detection device fixed bottom surface for being lifted on detection device motion guide device are installed on guide rail platform；Carbon slipper locator is lifted on telescopic arm.The utility model can send pantograph carbon slide surface damage detection device to from pantograph from initial position, pantograph carbon slide surface damage detection device is sent back to initial position again after to be detected, the intelligence degree that carbon slipper detection can be greatly improved, improves the reliability and efficiency of detection.
Description
Technical field
The utility model relates to a kind of detection auxiliary devices, especially for by High Speed Railway Trains pantograph carbon slide table
Surface damage detection device send a kind of crane to from pantograph, specifically High Speed Railway Trains pantograph from initial position
Carbon slipper surface damage detection lifting rack device.
Background technique
Pantograph is the electrical equipment that electrically-driven car obtains electric energy from contact net, is mounted on locomotive or motor-car roof
On.In use, the electric current of power grid is in close contact by the feed circuit copper conductor of pantograph carbon slide and power grid on locomotive
High-speed slide and be transmitted to electrically-driven car, the carbon slipper ten due to long-term close contact and high-speed slide, in pantograph
Partial volume is easy to wear.And after carbon slipper is more than to a certain degree in abrasion, it will result in poor contact, therefore must just replace, not so
There can be biggish security risk.
The detection of the carbon slipper degree of wear needs dedicated pantograph carbon slide surface damage detection device, but due to by electricity
The setting for bending carbon slipper has certain height, therefore such as to detect to pantograph carbon slide surface damage, it is necessary to will
Pantograph carbon slide surface damage detection device is sent to corresponding height.
Summary of the invention
Technical problem to be solved in the utility model be for above-mentioned state of the art, and provide can accurately by by
Pantograph carbon slipper surface damage detection device is sent to check bit, and detection device is driven to slide a kind of high-speed railway detected
Train pantograph carbon slide surface damage detection lifting rack device.
Technical solution adopted by the utility model to solve the above technical problems is as follows:
High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device, including purlin on the base is arranged
Frame mechanism, truss mechanism include two it is fixed can be realized on the base by the change in shape of itself frame body of lift in height variation with
And it is connected to the electricity that the hoistable platform variation synchronous with for driving two frame bodies on two frame body tops drives hoistable platform to be vertically moved up or down
Control elevator drive machine group；Left and right is parallel on hoistable platform is equipped with two and can synchronize stretching for stretching motion in the horizontal direction
It draws back one's hand arm, is associated with the guide rail platform parallel with hoistable platform on two telescopic arms altogether, is equipped with and is used on guide rail platform
Pantograph carbon slide surface damage detection device is driven to slidably reciprocate realization to carbon slipper surface damage along guide rail platform guiding left and right
Hurt the detection device motion guide device of degree detecting, the fixation of pantograph carbon slide surface damage detection device is lifted on detection device
The bottom surface of motion guide device；It is lifted on every telescopic arm through the conflict with carbon slipper side and determines retractable hand
The carbon slipper locator of arm extension elongation position.
To optimize above-mentioned technical proposal, the concrete measure taken further include:
Above-mentioned detection device motion guide device is collectively constituted by lead screw, screw slider and detection device suspension frame body；Silk
Thick stick is mounted on guide rail platform through bearing seated rotational support, and screw slider spiral is mounted on lead screw, is processed on guide rail platform
There is guide chute, screw slider is matched with the guide chute slide-and-guide of guide rail platform, and it is solid that detection device hangs frame body lifting
It is scheduled on the bottom surface of screw slider, the lifting of pantograph carbon slide surface damage detection device is fixed on the bottom of detection device suspension frame body
Face；One end on guide rail platform positioned at lead screw is equipped with the guiding by driving lead screw rotation driving screw slider along guide rail platform
The guiding driving motor that sliding slot guiding left and right slidably reciprocates.
Telescoping drive mechanism for driving two telescopic arm synchronization telescopes to move is installed on above-mentioned hoistable platform.
Above-mentioned carbon slipper locator from the support arm of L-shaped structure and for contradicting with the one side of carbon slipper with
Touch panel composition；The stringer board upper end of support arm is rigidly fixed with telescopic arm lower arm face to be connected, and touch panel is installed longitudinally disposedly
Contact control switch is installed on the horizontal front edge of board of support arm, the touch panel.
The right end of the guide chute of above-mentioned guide rail platform, which is equipped with, slides to the right range for limiting screw slider
Right limit switch, the left end of the guide chute, which is equipped with, to be slided the left limit of range to the left for limiting screw slider and opens
It closes.
It is equipped with closely to slide with carbon slipper surface on above-mentioned pantograph carbon slide surface damage detection device and be in contact
Detection probe and for the pressure detector that is contacted with carbon slipper surface of electric signal feedback detection probe.
Compared with prior art, the utility model is provided with the truss mechanism that can make elevating movement on the base, and in purlin
The telescopic arm of energy horizontal stretching motion is installed on the hoistable platform of frame mechanism, is provided on telescopic arm for determining
The carbon slipper locator of stop position, the front end of telescopic arm are equipped with guide rail platform, energy when telescopic arm stretches to carbon slipper
Pantograph carbon slide surface damage detection device edge is driven to lead using the detection device motion guide device being mounted on guide rail platform
Rail platform guiding left and right slidably reciprocates realization to carbon slipper surface damage degree detecting.
The utility model can send pantograph carbon slide surface damage detection device to from pantograph from initial position, to be checked
Pantograph carbon slide surface damage detection device is sent back to initial position again after survey, can greatly improve the intelligence of carbon slipper detection
Degree can be changed, improve the reliability and efficiency of detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is that bowing for the utility model sees structural schematic diagram.
Specific embodiment
The embodiments of the present invention are described in further detail below in conjunction with attached drawing.
Appended drawing reference therein are as follows: pedestal 1, frame body 21, hoistable platform 22, electrical-controlled lifting drive train 23, retractable hand
Arm 3, guide rail platform 4, detection device motion guide device 5, lead screw 51, screw slider 52, detection device suspension frame body 53, guiding are driven
Dynamic motor 54, carbon slipper locator 6, support arm 61, touch panel 62, telescoping drive mechanism 7, the detection of pantograph carbon slide surface damage
Equipment 8, carbon slipper 9.
Fig. 1 to Fig. 2 is the structural schematic diagram of the utility model.As shown, the utility model discloses a kind of high-speed irons
Road train pantograph carbon slide surface damage detection lifting rack device, the detection lifting rack device belong to high-speed rail train by electricity
Bend a sub-device in the accurate automatic detection device of carbon slipper abrasion, its effect is that pantograph carbon slide surface damage is examined
Measurement equipment 8 is sent from initial position to from pantograph, again send pantograph carbon slide surface damage detection device 8 after to be detected
Go back to initial position.This detection is used for high-speed rail pantograph carbon slide surface abrasion degree detecting with lifting rack device, can be with larger amplitude
Improve the intelligence degree of carbon slipper detection.
The detection lifting rack device of the utility model includes the truss mechanism being arranged on pedestal 1, and truss mechanism includes
Two are fixed on pedestal 1 frame body 21 and be connected to two frame bodies 21 that can realize that lift in height changes by the change in shape of itself
The electrical-controlled lifting that the variation synchronous with for driving two frame bodies 21 of the hoistable platform 22 on top drives hoistable platform 22 to be vertically moved up or down drives
Motivation group 23；On the position at the relatively close both ends of hoistable platform 22, left and right is equipped with two telescopic arms 3 parallelly,
Two telescopic arms 3 are same suspended structures, they can be synchronized makees stretching motion in the horizontal direction.Due to retractable hand
Arm 3 is mounted on hoistable platform 22, therefore can be vertically moved up or down with truss mechanism.It is flat that guide rail is associated on two telescopic arms 3 altogether
Platform 4 is lifted with detection device motion guide device 5 on guide rail platform 4, and the bottom surface of detection device motion guide device 5, which is lifted with, to be passed through
It is damaged with the pantograph carbon slide surface detected come the surface damage degree to carbon slipper 9 that slidably contacts the surfaces of carbon slipper 9
Triage measurement equipment 8.Detection device motion guide device 5, which can rotate, drives pantograph carbon slide surface damage detection device 8 along guide rail
The guiding of platform 4 left and right slidably reciprocates, to realize the Precision measurement to 9 surface damage of carbon slipper.Guide rail platform 4 most preferably with liter
Drop platform 22 is arranged in a manner of parallel.
In order to guarantee accurately to be sent to pantograph carbon slide surface damage detection device 8 at pantograph carbon slide, this
Utility model is lifted with carbon slipper locator 6 on every telescopic arm 3.Carbon slipper locator 6 can be in telescopic arm 3
When horizontal stretching, whether detection institute has been reached come the length for determining that telescopic arm 3 stretches out by the conflict with 9 side of carbon slipper
The position needed.
The pantograph carbon slide surface damage detection device 8 of the utility model is pantograph carbon slide surface inspection displacement electricity
Lotus converter.
The utility model have the advantages that stabilized structure, it is reliable, practical, be easily achieved, for High Speed Railway Trains by electricity
The detection of bow carbon slipper can largely improve its intelligence degree.When detection is in the low of inoperative with lifting rack device
When location status, the pantograph carbon slide surface damage detection device 8 for being mounted on 5 bottom surface of detection device motion guide device can be with
It is drawn into dedicated protective shelter, is conducive to the influence and destruction of resisting environmental factor in this way, such as water proof and dust proof further increases
Add the reliability and service life of pantograph carbon slide surface damage detection device 8.The utility model cooperation dual probe wraping plate type,
The pantograph carbon slide surface inspection displacement charge converter of the various structures such as single probe type, Compound Distribution type uses, and has more
Good adaptability, satiable difference detection performance requirement.
In embodiment, the detection device motion guide device 5 of the utility model is by lead screw 51, screw slider 52 and detection device
Suspension frame body 53 collectively constitutes；Lead screw 51 is mounted on guide rail platform 4 through bearing seated rotational support, 52 spiral of screw slider peace
On lead screw 51, guide chute is machined on guide rail platform 4, screw slider 52 and the guide chute sliding of guide rail platform 4 are led
To matching, detection device suspension frame body 53 lifts the bottom surface for being fixed on screw slider 52, the inspection of pantograph carbon slide surface damage
Measurement equipment 8 is fixed on the bottom surface that detection device hangs frame body 53 by bolt lifting.It is located at one end of lead screw 51 on guide rail platform 4
Guiding driving motor 54 is installed.Being oriented to driving motor 54 drives the rotation driving screw slider 52 of lead screw 51 along guide rail platform 4
Guide chute guiding left and right slidably reciprocates, and screw slider 52 is again mobile with motion detection device hanger bracket body 53, to drive by electricity
It is mobile to bend carbon slipper surface damage detection device 8.
In embodiment, the flexible drive for driving two telescopic arms, 3 synchronization telescope to move is installed on hoistable platform 22
Motivation structure 7.
In embodiment, the carbon slipper locator 6 of the utility model by L-shaped structure support arm 61 and be used for and carbon slipper
The touch panel 62 that 9 one side contradicts cooperation forms；The stringer board upper end of support arm 61 rigidly fixes phase with 3 lower arm face of telescopic arm
Connection, touch panel 62 are mounted on the horizontal front edge of board of support arm 61 longitudinally disposedly, are equipped with contact control switch on the touch panel 62.
Touching control switch is connected with detection with the control system of lifting rack device.
In embodiment, the right end of the guide chute of guide rail platform 4 is equipped with to be slided to the right most for limiting screw slider 52
The right limit switch of big stroke, the left end of the guide chute is equipped with slides range for limiting screw slider 52 to the left
Left limit switch.
In embodiment, it is equipped on pantograph carbon slide surface damage detection device 8 and closely slides phase with 9 surface of carbon slipper
The detection probe of contact and the pressure detector contacted for electric signal feedback detection probe with 9 surface of carbon slipper.
Detecting the invention also discloses a kind of High Speed Railway Trains pantograph carbon slide surface damage uses lifting rack-mounted
The lifting operation method set, this lifting operation method are after high-speed rail train pantograph to be detected falls frame, by pantograph carbon
Sled surface damage detection device 8 is sent to 9 surface of carbon slipper and carries out detection operation comprising following steps:
1), by the fixed detection for being lifted on detection device motion guide device 5 of pantograph carbon slide surface damage detection device 8
The bottom surface of device suspension frame body 53；
2), starting electrical-controlled lifting drive train 23 drives the frame body 21 of truss mechanism, and the deformation of frame body 21 is made to push lifting flat
After platform 22 and the telescopic arm 3 being mounted on hoistable platform 22 are vertically increased to the height of design, electrical-controlled lifting drive train
23 height out of service and that frame body 21 is locked in design；
3) after, frame body 21 locks, telescoping drive mechanism 7 starts, and telescoping drive mechanism 7 drives telescopic arm 3 along level
Direction stretching, extension, when the touch panel 62 of carbon slipper locator 6 arrives at carbon slipper 9 and contacts with the side of carbon slipper 9, on touch panel 62
Control switch movement is contacted, the electric signal that telescopic arm 3 reaches check bit is sent to control system, then by control system
Telescoping drive mechanism 7 is controlled, telescoping drive mechanism 7 is out of service and locks telescopic arm 3；
4) after, telescopic arm 3 locks, frame body 21 is unlocked, and electrical-controlled lifting drive train 23 starts the frame for making truss mechanism
Body 21 vertically declines, until the surface of detection probe and carbon slipper 9 on pantograph carbon slide surface damage detection device 8 connects
It touches, the pressure detector on pantograph carbon slide surface damage detection device 8, which is pressurized to start, will test probe and 9 surface of carbon slipper
Detection contact electric signal in place feeds back to electrical-controlled lifting drive train 23, electrical-controlled lifting drive train 23 again it is out of service simultaneously
Frame body 21 is locked again；
5) after, frame body 21 locks again, guiding driving motor 54 works, and guiding driving motor 54 drives the positive rotation of lead screw 51
Turn to hang the drive pantograph carbon slide surface damage detection device 8 of frame body 53 by screw slider 52 and detection device from carbon slipper
9 one end is moved to the other end of carbon slipper 9, is damaged using detection probe with surface of the contact on 9 surface of carbon slipper to carbon slipper 9
Hurt degree to be detected；
6), after pantograph carbon slide surface damage detection device 8 is moved to the other end of carbon slipper 9, guiding driving electricity
Machine 54 drives lead screw 51 to reversely rotate again and sends pantograph carbon slide surface damage detection device 8 back to initial position, completes one
Pantograph carbon slide surface damage detection cycle；
7), after detecting completion, electrical-controlled lifting drive train 23 is again started up, and the frame body 21 of truss mechanism is driven to rise
Make the disengaging of pantograph carbon slide surface damage detection device 8 and the contact on 9 surface of carbon slipper, when pantograph carbon slide surface damage
After detection device 8 is detached from the surface of carbon slipper 9, electrical-controlled lifting drive train 23 stops working again, and frame body 21 is locked；
8), after frame body 21 locks, telescoping drive mechanism 7 drives telescopic arm 3 to withdraw, and telescopic arm 3 is recovered to
Behind position, electrical-controlled lifting drive train 23 drives frame body 21 to fall back to initial position again, and pantograph carbon slide surface is damaged in completion
Triage measurement equipment 8 is sent from initial position to from pantograph, and again detects pantograph carbon slide surface damage after detection
Equipment 8 sends the conveying detection process of initial position back to.
The contact pressure of above-mentioned detection probe and 9 surface of carbon slipper is greater than 50 grams/cm2。
Above are merely preferred embodiments of the utility model, the protection scope of the utility model is not limited merely to above-mentioned
Embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.
Claims (6)
1. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device, including being arranged on pedestal (1)
Truss mechanism, it is characterized in that: the truss mechanism is fixed on pedestal (1) including two to be realized by the change in shape of itself
The frame body (21) and be connected to the hoistable platform (22) on two frame bodies (21) top and be used to drive two frame bodies that lift in height changes
(21) synchronous variation drives the electrical-controlled lifting drive train (23) of hoistable platform (22) vertical lift；The hoistable platform (22)
Upper left and right is parallel to be equipped with two telescopic arms (3) that can synchronize stretching motion in the horizontal direction, can described in two
The guide rail platform (4) parallel with hoistable platform (22) is associated on telescopic arm (3) altogether, is installed on the guide rail platform (4)
Have for driving pantograph carbon slide surface damage detection device (8) to control the realization pair that slidably reciprocates along guide rail platform (4) guiding
The detection device motion guide device (5) of carbon slipper (9) surface damage degree detecting, the pantograph carbon slide surface damage inspection
The fixed bottom surface for being lifted on detection device motion guide device (5) of measurement equipment (8)；Telescopic arm described in every is hung on (3)
Equipped with the carbon slipper locator for determining telescopic arm (3) extension elongation position by the conflict with carbon slipper (9) side
(6)。
2. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device according to claim 1,
Be characterized in: the detection device motion guide device (5) hangs frame body by lead screw (51), screw slider (52) and detection device
(53) it collectively constitutes；The lead screw (51) is mounted on guide rail platform (4) through bearing seated rotational support, and the lead screw is sliding
Block (52) spiral is mounted on lead screw (51), is machined with guide chute, the screw slider on the guide rail platform (4)
(52) it is matched with the guide chute slide-and-guide of guide rail platform (4), detection device suspension frame body (53) lifting is fixed
In the bottom surface of screw slider (52), pantograph carbon slide surface damage detection device (8) lifting is fixed on detection device
Hang the bottom surface of frame body (53)；One end on the guide rail platform (4) positioned at lead screw (51) is equipped with by driving lead screw
(51) the guiding driving motor that rotation driving screw slider (52) slidably reciprocates along the guide chute guiding left and right of guide rail platform (4)
(54)。
3. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device according to claim 2,
It is characterized in: the flexible drive for driving two telescopic arms (3) synchronization telescope to move is installed on the hoistable platform (22)
Motivation structure (7).
4. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device according to claim 3,
Be characterized in: the carbon slipper locator (6) is by the support arm (61) of L-shaped structure and for the one side with carbon slipper (9)
Contradict touch panel (62) composition of cooperation；The stringer board upper end and telescopic arm (3) lower arm face of the support arm (61) are rigidly solid
Surely it is connected, the touch panel (62) is mounted on the horizontal front edge of board of support arm (61) longitudinally disposedly, pacifies on the touch panel (62)
Equipped with contact control switch.
5. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device according to claim 4,
Be characterized in: the right end of the guide chute of the guide rail platform (4) is equipped with to be slided to the right most for limiting screw slider (52)
The right limit switch of big stroke, the left end of the guide chute is equipped with slides range for limiting screw slider (52) to the left
Left limit switch.
6. High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device according to claim 5,
It is characterized in: is equipped on the pantograph carbon slide surface damage detection device (8) and closely slides phase with carbon slipper (9) surface
The detection probe of contact and the pressure detector contacted for electric signal feedback detection probe with carbon slipper (9) surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820854866.2U CN208249790U (en) | 2018-06-04 | 2018-06-04 | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820854866.2U CN208249790U (en) | 2018-06-04 | 2018-06-04 | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208249790U true CN208249790U (en) | 2018-12-18 |
Family
ID=64653349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820854866.2U Expired - Fee Related CN208249790U (en) | 2018-06-04 | 2018-06-04 | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208249790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584773A (en) * | 2018-06-04 | 2018-09-28 | 南京铁道职业技术学院 | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device and its lifting operation method |
-
2018
- 2018-06-04 CN CN201820854866.2U patent/CN208249790U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108584773A (en) * | 2018-06-04 | 2018-09-28 | 南京铁道职业技术学院 | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device and its lifting operation method |
| CN108584773B (en) * | 2018-06-04 | 2023-09-08 | 南京铁道职业技术学院 | Lifting frame device for detecting surface damage of pantograph carbon slide plate of high-speed railway train and lifting operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108584773A (en) | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device and its lifting operation method | |
| CN209051307U (en) | A kind of charging equipment | |
| CN102295162B (en) | Transplanting device | |
| CN108981562B (en) | Accurate automatic checkout device of high-speed railway train pantograph carbon slide wearing and tearing | |
| CN103407786A (en) | Manipulator conveying device used for automatic detection of commutator | |
| CN208249790U (en) | High Speed Railway Trains pantograph carbon slide surface damage detection lifting rack device | |
| CN108387276A (en) | Lithium battery checking equipment | |
| CN111664981A (en) | Pantograph maintenance contact force measurement system and method | |
| CN209640405U (en) | A kind of a kind of electroscopic device of UAV flight | |
| CN106494886B (en) | Comprehensive parameters detection device for motor-car energy unit | |
| CN105043784A (en) | Device for automatically detecting double tracks of automobile pivoted window glass lifter | |
| CN109772719B (en) | Integrated circuit transfer mechanism and transfer method | |
| CN203419543U (en) | Mechanical hand conveying device used for commutator automatic detection | |
| CN209327269U (en) | The irregular tester of capacitance type fiber strand evenness long segment | |
| CN208383056U (en) | High-speed rail train pantograph carbon slide wears accurate automatic detection device | |
| CN205192461U (en) | Jack automated inspection mechanism | |
| CN102128676A (en) | Toy noise detection profiling mechanism | |
| CN209550005U (en) | A kind of detection device | |
| CN210635651U (en) | Auxiliary lifting device of rail type inspection robot | |
| CN110068289B (en) | High-precision detection device for rail transit pantograph | |
| CN203599278U (en) | Full-automatic distortion detecting device for T-shaped solid guide rail distortion straightening machine | |
| CN105371797B (en) | A kind of jack automatic detection mechanism | |
| CN207147448U (en) | Automobile glass lifter rope capacity detection device | |
| CN216863578U (en) | A testing arrangement for tunnel construction | |
| CN110182716A (en) | Two column lifting equipments of one kind and lift control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181218 Termination date: 20190604 |