CN207972115U - Prefabricated reinforced concrete section of jurisdiction automatic production line - Google Patents
Prefabricated reinforced concrete section of jurisdiction automatic production line Download PDFInfo
- Publication number
- CN207972115U CN207972115U CN201721689150.3U CN201721689150U CN207972115U CN 207972115 U CN207972115 U CN 207972115U CN 201721689150 U CN201721689150 U CN 201721689150U CN 207972115 U CN207972115 U CN 207972115U
- Authority
- CN
- China
- Prior art keywords
- jurisdiction
- curing kilns
- production line
- roller
- automatic production
- 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
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
The utility model discloses a kind of prefabricated reinforced concrete section of jurisdiction automatic production line, which includes mold running gear, concrete casting system, curing kilns door system, fog room temperature control system, tunnel segment demoulding system and recording monitor system.Mold running gear includes straight trip roller-way, traversing ferry-boat mechanism and translation main-auxiliary vehicle, wherein straight trip roller-way can realize walking of the segment die on the outside of curing kilns, traversing ferry-boat mechanism can realize that movement of the segment die between two roller-ways, translation main-auxiliary vehicle can realize that segment die is entered by straight trip roller-way in curing kilns or by being moved in curing kilns on straight trip roller-way.The automatic production line has automation, the level of informatization high, and the steam-cured control in section of jurisdiction is accurate reliable, at the same the production of linear can be stablized, good reliability, it is energy-saving the features such as.
Description
Technical field
The utility model is related to prefabricated reinforced concrete section of jurisdiction production fields, and in particular to refer to prefabricated reinforced concrete section of jurisdiction
Production line.
Background technology
Shield duct piece is the minimum unit of tunnel-liner installation and stress, is the innermost layer barrier in tunnel, carries resistance
The effect of earth pressure, groundwater pressure.The shield duct piece quality of production directly affects the knot in tunnel after assembled quality and molding
Structure performance, water resistance and durability.
Currently, it includes at least that segment prefabricated technology, which mainly uses tunnel furnace production line, the tunnel furnace production line, both at home and abroad
One pouring product line, at least three maintaining production lines, segment die propulsion system, concrete running gate system and steam-cured control system
System.According to technological process, each flow chart position is fixed, and segment die is moved according to the beat of setting in the production line.
Above-mentioned tunnel furnace production line exists following insufficient：
（1）Segment die needs to pass sequentially through the areas Jing Ting, heating zone, flat-temperature zone, cooling area four after pouring into a mould concrete
Region is needed across entire curing kilns, and segment die movement is generally adopted as each segment die and a propulsion point is arranged
Or a propulsion point is arranged in sliver, by the collision pushing tow between segment die, so, the meeting in segment die moving process
The molding concrete in receipts face is to the accumulation of segment die end and the destruction of early stage internal structure caused by vibrating and colliding, seriously
Influence the quality of section of jurisdiction.
（2）Section of jurisdiction maintenance is carried out on maintaining production line, and section of jurisdiction passes sequentially through the areas Jing Ting, heating according to the beat of setting
Area, flat-temperature zone, the region of cooling area four, each region is generally separated with cotton curtain or thermal insulating door thermally insulated door, but passes through phase in segment die
The diffusion of heat between neighbouring region can not ensure requirement of each region to temperature level and warm variable Rate.
（3）Tunnel oven segment die promotes generally using the propulsion of segment die fission or integrated propulsion system, due to maintenance
The working environment of high temperature and humidity in kiln, segment die propulsion system failure rate is high, stability is poor.
（4）Tunnel oven is because of the limitation of its technological design, and when in section of jurisdiction, output is smaller, all segment dies are also required to
Shuttling movement one week on production line, causes unnecessary energy expenditure and equipment loss.
Utility model content
For deficiency existing for existing shield duct piece production line, the purpose of this utility model is to provide a kind of performance is steady
Fixed, reliability height, energy-saving safe, high degree of automation, while the automatic production line of section of jurisdiction steaming quality can be improved.
In order to achieve the above objectives, the utility model is realized by following technical proposals：A kind of prefabricated reinforced concrete pipe
Piece automatic production line, including independent curing kilns, segment die running gear, concrete casting system, curing kilns door system, support
Kiln temperature control system, tunnel segment demoulding system, recording monitor system and PLC automatic control system are protected, it is characterized in that：The pipe
Sheet mold running gear includes straight trip roller-way, transverse-moving mechanism and translation main-auxiliary vehicle；The straight trip roller-way is set to the two of curing kilns
Female vehicle at end, the translation main-auxiliary vehicle is set on straight trip roller-way, and sub- vehicle can be combined and be taken off with female vehicle using female vehicle as carrier
From female vehicle is by motor drive roller wheel, to drive the segment die on top to walk；The sub- vehicle is driven by accumulator, sub- vehicle
The table top that can be risen or fallen is arranged in upper end, drives table top to rise or fall by jacking apparatus；The traversing ferry-boat mechanism is set
It is placed in the end of straight trip roller-way, realizes the conversion that segment die is kept straight at two between roller-way.
The concrete casting system completes section of jurisdiction by concrete conveying frame, high hopper, low hopper and vibrating device
Concreting, molding of vibrating；It is respectively arranged with top vertical shift track in the upper side and lower side of concrete conveying frame and lower part is vertical
Track is moved, high hopper is mounted on by the roller of its bottom on top vertical shift track；Low hopper is mounted on one by rail wheel
In the track of the upper end of crossbeam, the lower end of the crossbeam is mounted on by roller on lower part vertical shift track；The vibrating device is whole
Body formula shake table, shake table are fixed the segment die on the upside of it with jacking apparatus by clamping,
The curing kilns door system is set to the both ends of each curing kilns, wicket controlled by PLC curing kilns are opened and
It closes.
The curing kilns temperature control system is by the temperature inductor that is arranged in kiln, by steam electric control valve according to kiln
Interior steam-cured situation controls steam intake.
The tunnel segment demoulding system setting is kept straight at section of jurisdiction kiln discharge end on roller-way, the section of jurisdiction of steam-cured end is demoulded,
Flaps operation.
The PLC automatically controls control connection segment die running gear, concrete casting system, maintenance wicket system respectively
System and curing kilns temperature control system and tunnel segment demoulding system.
The recording monitor system is set to straight trip roller-way, transverse-moving mechanism, demoulding frame, pours station and maintenance wicket.
The curing kilns door system is set to the both ends of each curing kilns, amounts to 30 wickets, and wicket passes through PLC controls pair
Curing kilns open and close.
The curing kilns temperature control system is made of temperature inductor, thermal conductive pipe and electric control valve, the temperature
Inductor is respectively arranged in each curing kilns, setting 2 in each kiln, for monitoring kiln temperature in real time；The heat conducting pipe
Road is set to each curing kilns bottom, and 8 accessory pinna pipes are arranged in each kiln；The electric control valve is set to each curing kilns and steams
The input end in steam pipe road controls the size of electric control valve unlatching to control steam intake in kiln by PLC.
The tunnel segment demoulding system includes vacuum cup, turning machine and demoulding frame.
The automatic production line has automation, the level of informatization high, and the steam-cured control in section of jurisdiction is accurate reliable, while the production
Can linearly stablize, good reliability, it is energy-saving the features such as.
Description of the drawings
Fig. 1 is the structural schematic diagram of automatic production line provided by the utility model.
Fig. 2 is the schematic diagram of concrete casting system in automatic production line provided by the utility model.
Fig. 3 is the schematic side view of Fig. 2.
Fig. 4 is the schematic diagram of dismoulding system in automatic production line provided by the utility model.
Figure label：100 be segment die running gear, and 100-1 is straight trip roller-way, and 100-2 is transverse-moving mechanism, and 200 are
Concrete casting system, 300 be tunnel segment demoulding system, and 400 be facilities of mix storied building, and 500 be segment die, and 600 be vacuum cup, 700
For turning machine.
Specific implementation mode
Below in conjunction with the attached drawing in the example of the utility model, the technical solution in the example of the utility model is carried out clear
Chu is fully described by.
Referring to Fig. 1, a kind of prefabricated reinforced concrete section of jurisdiction automatic production line used by this example is using 3 vibration works
Position, 15 steam curing kilns, specifically include segment die running gear 100（Containing straight trip roller-way 100-1, transverse-moving mechanism 100-2 with
And translation main-auxiliary vehicle）, concrete casting system 200, curing kilns door system（This figure is not shown）, tunnel segment demoulding system 300, maintenance
Kiln temperature control system, recording monitor system and PLC automatic control system.
As shown in Figure 1, the utility model segment production technology flow is as described below：Reinforcing bar former material is into storage after factory to reinforcing bar
Former material area, it is to be tested it is qualified after can start reinforcing bar semi-finished product machine-shaping, sent to maintenance after semi-finished product reinforcing bar is qualified after testing
The welding job for starting finished product steel reinforcement cage at the top of kiln detects qualified finished product reinforcing bar general one and deposits in curing kilns top east, etc.
In segment die to be hung in.The automatic production line department technological process of production is：Tunnel segment demoulding, segment die are clear after steam-cured
Reason, brushing releasing agent, molding, finished product steel reinforcement cage enter mould, installation built-in fitting, concreting molding, section of jurisdiction receipts face, section of jurisdiction steaming
Support, the steam-cured end in section of jurisdiction reaches demoulding strength and can demould, recycled subsequently into next time.This scheme plant layout is reasonable, each work(
Energy region division is clear, and steel reinforcement cage molding, concreting, section of jurisdiction maintenance are fully considered in plant layout and Design of Production Line
And section of jurisdiction goes out the time of critical processes and linking spatially and the layouts such as fortune.
Wherein, segment die running gear 100 includes straight trip roller-way 100-1, traversing ferry-boat mechanism 100-2 and translation
Female vehicle, the straight trip roller-way 100-1 are set to the both ends of curing kilns, 1 pair of idler wheel of the every 2 meters of settings in the both ends of curing kilns in this example
（It is respectively placed in roller-way both sides）, each idler wheel drives by individual motor, waits for main-auxiliary vehicle by segment die by being sent in kiln to straight
After on row roller-way, the infrared inductor at roller-way is connected to signal sign on motor and drives roller operation, to drive top
Segment die is walked, and after segment die sails out of idler wheel, infrared inductor, which is connected to, to sail out of signal sign on motor and be stopped,
The design ensure that the idler wheel below only segment die works, and to wait for working condition at idler wheel elsewhere, it reduces
Energy expenditure and equipment attrition.In order to ensure that the accuracy of segment die motion positions, this system use infrared inductor simultaneously
Positioning and machinery positioning two ways, it is ensured that segment die walking is accurate, safe and reliable.
The traversing ferry-boat mechanism 100-2 is as shown in Figure 1, be set to the end of straight trip roller-way, and realization section of jurisdiction is in two straight trips
Conversion between roller-way, transverse-moving mechanism are made of work top, driving motor and chain, hoisting gasbag etc., are receiving section of jurisdiction
Before mold, transverse-moving mechanism work top height is lower 5cm than straight trip idler wheel, and gas is jacked after segment die is run to transverse-moving mechanism
Capsule works, and work top and segment die are jacked 10cm, and motor drive chain drives entire work top movement later, to be shipped
At row to other end straight trip roller-way, air bag puts down work top and segment die, and segment die is fallen on straight trip roller-way, then
Continued to drive segment die operation by straight trip roller-way.
The translation main-auxiliary vehicle, is set on the straight trip roller-way at curing kilns both ends, is mainly used for segment die by straight trip roller
It send in curing kilns or by being sent in curing kilns to straight trip roller-way in road.Wherein, female vehicle and straight trip roller-way same direction movement, in mother
Vehicle lower part is that female vehicle is powered by trolley, and sub- vehicle is driven by accumulator, and charging unit is set on female vehicle.Entering kiln end, is waiting for
When segment die is sent to maintenance wicket, the sub- vehicle on female vehicle top is lifted away from roller-way by jacking apparatus, by segment die, and by its
It is sent into designated position in kiln, after reaching designated position, sub- vehicle working bench face declines, and segment die is placed kiln inner concrete platform
On face, sub- vehicle exits in kiln on extremely female vehicle.At kiln discharge end, sub- vehicle runs to segment die lower part in kiln, will by jacking apparatus
Segment die lifts, and drives segment die to run to female vehicle, segment die is put down, and is keeping straight at this point, segment die is fallen
On roller-way.
Concrete casting system 200 includes concrete feeding unit and 3 vibrating device compositions, such as Fig. 2 in this example
Shown, concrete conveyance mechanism is made of high-order hopper, low level hopper and conveying frame, and high-order hopper will be after stirring host mix
Concrete sent to low level hopper by conveying frame, low level hopper can be moved all around by mobile mechanism, to mix
Solidifying soil is precisely delivered at the segment die of shake table top.The vibrating device is monoblock type shake table, waits for that segment die passes through
When roller-way is run to shake table top, start button is pressed, jacking starts, and after jacking air pressure in place, clamping device starts, and clamps
After air pressure reaches setting value, shake table starts to shake by force, and time and the frequency of shaking by force then change until concrete is full of segment die
It shakes to be weak, weak time and the frequency of shaking is not sent out significantly with concrete surface stopping sink or sink unobvious, interior formwork
Raw, concrete, which enriches segment die corner part when surface has mortar to glow, to be advisable.It is weak shake after, motor, which rotates freely, to stop
It clamps and loosens after only, jacking declines.Clamping loosens, jack and fall into place after, a ring end cycle provides segment die and fills perhaps
Movable signal prepares the beginning in next period.
Tunnel segment demoulding system includes vacuum cup, turning machine, demoulding frame in this example, as shown in figure 3, vacuum cup will
The section of jurisdiction for reaching demoulding strength is taken out from segment die, and vacuum cup includes mainly sucker, vacuum pump, pressure gauge, vacuum
The compositions such as solenoid valve, alarm, wherein sucker structural shape match with section of jurisdiction extrados, and there is fluid sealant on sucker surface
Item ensures sealing effect.When sucker invests section of jurisdiction top, start button, vacuum pump is started to work, and extracts sucker and pipe
Air between piece, after pressure gauge reaches setting value, the green indicating lamp on sucker top flickers, at this point it is possible to pass through demoulding
Machine slings section of jurisdiction from segment die, is then moved to turning machine top.When section of jurisdiction is positioned on turning machine, vacuum electromagnetic
Valve starts pressure release, and sucker is detached from section of jurisdiction.At this point, starting turning machine overturns section of jurisdiction, section of jurisdiction is facilitated from overturning is kept flat to stand up
Heavy-duty machine is hanged by vertical hanger.
In this example, production line includes altogether 15 curing kilns, have inside each curing kilns individual steam supply pipe road and
Temperature control system, as shown in Figure 4.The size of curing kilns is determined according to the size of produced section of jurisdiction, in this example, curing kilns
Size is length 18m, width 5.7m, clear height 1.9m, and section of jurisdiction steam curing related specifications are：Section of jurisdiction steam curing process is divided into quiet
To stop, heat up, constant temperature, cooling four-stage, it is desirable that section of jurisdiction is quiet to stop stage many 2h, heating rate≤15 DEG C/h, rate of temperature fall≤
20 DEG C/h, highest steam curing temperature≤60 DEG C.According to this specification, 4t/h steam boilers are selected to be supplied as heat source in this example, often
8 accessory pinna pipes are set in a curing kilns, to ensure that section of jurisdiction steam curing temperature and rate meet code requirement.Accessory pinna pipe predominantly expands
Heat dissipation area, puies forward high temperature rise efficiency, and specific requirement is that accessory pinna pipe main pipe size is DN50, outsourcing ring-type accessory pinna, accessory pinna spacing
8mm, height 25mm, accessory pinna thickness 0.8mm.
The temperature control system, at the top of each curing kilns, steam upstream end is both provided with electric control valve, in kiln
2 temperature inductors, electric control valve and temperature inductor are set by PLC centralized controls, by detecting temperature inductor induction
To temperature control the size of electric control valve unlatching, to ensure that temperature in curing kilns and warm variable Rate are transported according to setting value
Row.
In this example, PLC automatic control system is the control centre of production line, and the everything instruction on production line has
PLC automatic control system is sent out, and each process controlled on production line can be carried out according to the productive temp of setting.
Claims (10)
1. a kind of prefabricated reinforced concrete section of jurisdiction automatic production line, including independent curing kilns, segment die running gear, coagulation
Native casting system, curing kilns door system, curing kilns temperature control system, tunnel segment demoulding system, recording monitor system and PLC are automatic
Control system, it is characterized in that：The segment die running gear includes straight trip roller-way, transverse-moving mechanism and translation main-auxiliary vehicle；Institute
The both ends that straight trip roller-way is set to curing kilns are stated, female vehicle of the translation main-auxiliary vehicle is set on straight trip roller-way, and sub- vehicle is with female vehicle
For carrier, can be combined with female vehicle with disengaging, female vehicle is by motor drive roller wheel, to drive the segment die on top to walk；
The sub- vehicle is driven by accumulator, and the table top that can be risen or fallen is arranged in sub- vehicle upper end, drives table top to rise by jacking apparatus
Or decline；The traversing ferry-boat mechanism is set to the end of straight trip roller-way, and realization segment die is kept straight at two between roller-way
Conversion.
2. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The concrete pours
It builds system and the concreting of section of jurisdiction, molding of vibrating is completed by concrete conveying frame, high hopper, low hopper and vibrating device；
It is respectively arranged with top vertical shift track and lower part vertical shift track in the upper side and lower side of concrete conveying frame, high hopper passes through its bottom
The roller in portion is mounted on top vertical shift track；Low hopper is mounted on by rail wheel in the track of the upper end of a crossbeam, should
The lower end of crossbeam is mounted on by roller on lower part vertical shift track；The vibrating device is monoblock type shake table, and shake table passes through
It clamps and jacking apparatus fixes the segment die on the upside of it.
3. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The maintenance wicket
System is set to the both ends of each curing kilns, and wicket is controlled by PLC and opened and closed to curing kilns.
4. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The maintenance kiln temperature
Degree control system is led to by steam electric control valve according to steam-cured situation control steam in kiln by the temperature inductor being arranged in kiln
Enter amount.
5. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The tunnel segment demoulding
System setting demoulds the section of jurisdiction of steam-cured end, flaps operation on section of jurisdiction kiln discharge end straight trip roller-way.
6. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The PLC is automatic
Control system controls connection segment die running gear, concrete casting system, curing kilns door system and curing kilns temperature respectively
Control system and tunnel segment demoulding system.
7. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The recording monitor
System is set to straight trip roller-way, transverse-moving mechanism, demoulding frame, pours station and maintenance wicket.
8. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The maintenance wicket
System is set to the both ends of each curing kilns, amounts to 30 wickets, and wicket is controlled by PLC and opened and closed to curing kilns.
9. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The maintenance kiln temperature
Degree control system is made of temperature inductor, thermal conductive pipe and electric control valve, and the temperature inductor is respectively arranged at each
In curing kilns, setting 2 in each kiln, for monitoring kiln temperature in real time；The thermal conductive pipe is set to each curing kilns bottom
Portion, each kiln is interior to be arranged 8 accessory pinna pipes；The electric control valve is set to the input end of each curing kilns jet chimney, passes through
PLC controls the size of electric control valve unlatching to control steam intake in kiln.
10. prefabricated reinforced concrete section of jurisdiction according to claim 1 automatic production line, it is characterized in that：The section of jurisdiction is de-
Modular system includes vacuum cup, turning machine and demoulding frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689150.3U CN207972115U (en) | 2017-12-07 | 2017-12-07 | Prefabricated reinforced concrete section of jurisdiction automatic production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721689150.3U CN207972115U (en) | 2017-12-07 | 2017-12-07 | Prefabricated reinforced concrete section of jurisdiction automatic production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207972115U true CN207972115U (en) | 2018-10-16 |
Family
ID=63771237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721689150.3U Expired - Fee Related CN207972115U (en) | 2017-12-07 | 2017-12-07 | Prefabricated reinforced concrete section of jurisdiction automatic production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207972115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181677A (en) * | 2019-05-22 | 2019-08-30 | 江苏丰和隧道设备有限公司 | A kind of subway segment automatic production line |
-
2017
- 2017-12-07 CN CN201721689150.3U patent/CN207972115U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181677A (en) * | 2019-05-22 | 2019-08-30 | 江苏丰和隧道设备有限公司 | A kind of subway segment automatic production line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107901208A (en) | Prefabricated reinforced concrete section of jurisdiction automatic production line | |
| CN105082346B (en) | A kind of prefabricated intelligent flow production line of shield duct piece | |
| CN109624055A (en) | A kind of automatic production line of subway segment | |
| CN106926356B (en) | The automation production flow line of pre-cast concrete piping lane | |
| CN207711039U (en) | A kind of pre-stress rail plate tinuous production | |
| WO2020232745A1 (en) | Prefabricated component production line with bench formwork temporary storage unit | |
| CN104647577A (en) | Automatic production lien for assembling type housing prefabricated panels | |
| CN207972115U (en) | Prefabricated reinforced concrete section of jurisdiction automatic production line | |
| CN109822736A (en) | A kind of production technology of assembled wallboard | |
| CN108755434A (en) | A kind of outer mould trolley of self-propelled hydraulic railway box girder | |
| CN209350532U (en) | Concrete prefabricated element production line | |
| CN112454643A (en) | Modularized disassembly-free wall formwork automatic production system | |
| CN208163960U (en) | The production system of concrete precast pile automatic production line workshop and prefabricated pile | |
| CN109676779A (en) | A kind of solid pulsating concrete prefabricated element flexible production line | |
| CN208118097U (en) | A kind of novel precast concrete lining segment stationary kiln flexible production line | |
| CN102692120A (en) | Multi-station drying room capable of feeding and discharging working piece at top part | |
| CN208375556U (en) | Separate unit kiln formula curing concrete pipe segment production line | |
| CN111531700B (en) | Section of jurisdiction assembly line convenient to remote concrete transportation | |
| CN107806760A (en) | Annular full automatic control de-waxing energy-conserving and environment-protective tunnel cave | |
| CN201566041U (en) | Inside and outside die immediate discharging concrete tube machine | |
| CN103759538B (en) | Heating furnace burner block replacing method capable of reserving furnace top | |
| CN207156312U (en) | Foaming mould mould temperature and time controlled system | |
| CN210651243U (en) | Concrete prefabricated member underground tunnel maintenance system | |
| CN210732776U (en) | Unit type maintenance system for CRTS III type ballastless track slab | |
| CN210552045U (en) | Curing kiln |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 450000 Shangxian Street, Longzihu Wisdom Island, Zhengdong New District, Zhengzhou City, Henan Province Patentee after: Zhengzhou Yijian Group Co.,Ltd. Address before: 450000, No. 91, Bauhinia Road, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU NO.1 CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
|
| 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: 20181016 Termination date: 20211207 |