CN104532752B - Intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system - Google Patents
Intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system Download PDFInfo
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- CN104532752B CN104532752B CN201410825888.2A CN201410825888A CN104532752B CN 104532752 B CN104532752 B CN 104532752B CN 201410825888 A CN201410825888 A CN 201410825888A CN 104532752 B CN104532752 B CN 104532752B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
An intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system is provided with a circulating pump, and the inlet end and the outlet end of the circulating pump are communicated with a high-speed stirring mortar preparing barrel to form a circulating loop of the circulating pump and a circulating loop of the circulating pump and the high-speed stirring mortar preparing barrel. In a discharging pipeline of a mortar pressing machine, a low-speed stirring circulating pipeline communicated with a low-speed stirring mortar storing barrel is arranged, and a circulating loop of the mortar pressing machine and the low-speed stirring mortar stirring barrel is formed. A conveying pipeline at the mortar outlet of a prestress hole channel communicated with the low-speed stirring mortar storing barrel is provided with an automatic mortar water-binder ratio judging device. The intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system has the advantages that the functions of automatic weighting, automatic feeding, automatic mortar preparing, automatic mortar pressing, automatic mortar pressing data storing and automatic pressure and time curve generating of an existing intelligent mortar preparing and pressing system can be achieved, the mortar preparing efficiency is higher, and the mortar preparing effect is better; damage caused by idling of the mortar pressing machine can be prevented; pipeline fractures and the mortar leaking phenomenon caused by too large pressure can be effectively avoided; whether the mortar water-binder ratio is qualified or not can be automatically judged; unqualified mortar can be automatically discharged; pipeline mortar accumulation is avoided, and washing is facilitated.
Description
Technical field
The present invention relates to prestress engineering technical field of construction, more particularly to a kind of bi-motor high-speed circulating stirring intelligence system
Slurry mud jacking system.
Background technology
Hole path pressure grouting is one of most important operation of post-tensioned concrete structure, and it is closely knit whether mud jacking fills, to pre-
The burn into loss of prestress of stress rib, the rigidity of prestressed component have conclusive influence, directly influence prestressed concrete
The security and durability of soil structure.Traditional pumping of prostressed duct method is artificial operational control, there is many drawbacks：
（1）Artificial weighing and burden, water-cement ratio control is inaccurate, causes bleeding serious；（2）Pressure is uncontrollable, and to cause mud jacking not fill close
It is real；（3）Manual record data, human factor is uncontrollable, easily fakes；（4）Labor workload is big.
To solve the above problems, occurs some intelligent slurrying and mud jacking equipment in the market.The present inventor possesses China
Patent 201320831177.2 discloses a kind of intelligent slurrying mud jacking system, be capable of achieving weigh automatically automatically, automatic charging, automatically
Slurrying, automatic mud jacking, automatic record mud jacking data and automatically generate the function of pressure time curve；But it has following deficiency：1、
High-speed stirred is driven using single motor, and power of motor requirement is larger, and operation vibration is larger, and the slurries for stirring sometimes are not thin enough
It is greasy；2nd, at the end of mud jacking by reason of heavy pressure, easily there is spillage when closing valve；3rd, pneumatic mortar machine is easily damaged because of idle running；4、
Cannot judge whether the slurries water-cement ratio of grout outlet meets the requirements.
Chinese patent 201210194412.4 discloses a kind of inherent stress mud-jacking chassis and circulation mud jacking method, using water
Glue determines water-cement ratio than tester, but it has following defect：Due to having water in prestress pipe during circulation mud jacking, slurry is diluted
So as to destroy its water-cement ratio, these underproof slurries cannot be excluded liquid, and slurry storing tank is returned by closed cycle, cause whole bucket to be starched
The water-cement ratio of liquid is destroyed.
The content of the invention
Bi-motor circulation stirring is used to ensure slurries uniform and smooth it is an object of the invention to provide one kind, can prevent pressure
Pulp grinder dallies and pipeline breaking, spillage, can automatically judge whether slurries water-cement ratio is qualified and exclude the double of unqualified slurries automatically
The intelligent slurrying mud jacking system of motor high-speed circulating stirring.
Solution of the invention is such：
A kind of intelligent slurrying mud jacking system of bi-motor high-speed circulating stirring, including the storage of high-speed stirred cement slurry preparing barrel, stirring at low speed
Slurry bucket, automatical feeding system, pneumatic mortar machine, it is characterised in that：Circulating pump is provided with, the import and export end of the circulating pump connects
High-speed stirred cement slurry preparing barrel, constitutes circulating pump and its circulation loop with high-speed stirred cement slurry preparing barrel, in pneumatic mortar machine discharging pipeline, if
The stirring at low speed circulation line of connection stirring at low speed slurry storing tank is put, the circulation loop of pneumatic mortar machine and stirring at low speed slurry storing tank is constituted,
Slurries water-cement ratio is provided with the conveyance conduit of the prestressed pore passage grout outlet connected with the stirring at low speed slurry storing tank to judge automatically
Device, for judging whether slurries water-cement ratio is qualified；And electric three-way valve is provided with, three interfaces of the valve connect slurries respectively
Water-cement ratio automatic judging device, useless slurry bucket, stirring at low speed slurry storing tank.
More specifically technical scheme also includes：The slurries water-cement ratio automatic judging device is included into and out of slurries mouthful
In detection container and measurement detection container mud jacking slurry water glue than control centre, the detection container is supported on weighing and sensing
Device, by the weight of weighing sensor real-time detection detection container；The grout outlet of the detection container is provided with connection useless slurry bucket
Useless slurry feed pipe for mortar and stirring at low speed slurry storing tank storage slurry feed pipe for mortar, by the electric three-way valve control grout outlet slurries it is defeated
Outgoing direction.
Further：The slurries mouthful that enter of the detection container are located at bottom, and it goes out slurries mouthful and is located at top.
Further：Described control centre is independent computer or is integrated on device Host.
Further：Described weighing sensor at least uses three, and detection is evenly distributed on positioned at same level position
The periphery of container.
Further：The detection container can be installed on one with the high-speed stirred cement slurry preparing barrel, stirring at low speed slurry storing tank
Body, constitutes overall structure, it would however also be possible to employ Split type structure, is fabricated to an independent assembly, is connected with corresponding pipeline by pipeline
Connect.
Further：In pneumatic mortar machine discharging pipeline, relief valve is provided with, for after mud jacking terminates to close ball valve
Pressure release when pressure is excessive, prevents pipeline breaking and spillage.
It is an advantage of the invention that except can realize existing intelligent slurrying mud jacking system weigh automatically, automatic charging, from
Move slurrying, automatic mud jacking, automatic mud jacking data and automatically generate outside the functions such as pressure time curve, also with following excellent
Point：
1st, faster, effects on slurry making is more preferable for pulping efficiency；
2nd, the damage caused by pneumatic mortar machine dallies can be prevented；
3rd, the pipeline breaking that can be prevented effectively from caused by pressure is excessive and spillage phenomenon；
4th, can automatically judge whether slurries water-cement ratio is qualified, automatically exclude unqualified slurries；
5th, avoid pipeline from accumulating slurry, be easy to cleaning.
Brief description of the drawings
Fig. 1 is use scheme of installation of the invention.
Fig. 2 is multi cycle intelligence slurrying mud jacking system structure diagram of the invention.
Fig. 3 is slurries water-cement ratio automatic judging device structural representation of the invention.
Fig. 4 is slurrying mud jacking workflow diagram of the invention.
In accompanying drawing：
1st, automatical feeding system 2, circulating pump 3, the pneumatic mortar machine 5 of control centre 4, control valve 6, control valve 7,
Pressure gauge 8, relief valve 9, pressure sensor 10, prestressed pore passage 11, U-shaped connecting tube 12, component 13, ball
Valve 14, control valve 15, slurries water-cement ratio automatic judging device 16, electric three-way valve 17, useless slurry bucket 18, low speed are stirred
Mix slurry storing tank 19, control valve 20, control valve 21, high-speed stirred cement slurry preparing barrel 22, protector for sensor 23, weigh
Sensor 24, circulating pump motor 25, Butterworth Hatch 26, water pump 27, main reservoir 28, auxiliary material case 29, major ingredient feeding
Pipe 30, auxiliary material feed pipe 31, major ingredient feeding motor 32, auxiliary material feeding motor 33, high speed stirrer motor 34, filter screen
35th, stirring at low speed motor 36, stock inlet 37, support 38, weighing sensor 39, detection container supporting plate 40, inspection
Xylometer 41, grout outlet, 42, control valve.
Specific embodiment
As shown in Figure 1, 2, the import and export end of circulating pump of the present invention 2 connects high-speed stirred cement slurry preparing barrel 21, constitutes circulating pump
And its circulation loop with high-speed stirred cement slurry preparing barrel；For being circulated high-speed stirred to slurries, make slurries finer and smoother, uniform.
In the discharging pipeline of pneumatic mortar machine 4, the stirring at low speed circulation line of connection stirring at low speed slurry storing tank 18 is set, pressure is constituted
Pulp grinder and the circulation loop of stirring at low speed slurry storing tank, are capable of achieving function：1st, prevent from pneumatic mortar machine from dallying to cause to damage；2nd, storage is avoided to starch
There is product slurry phenomenon with screw pump connecting pipe in bucket；Pipeline breaking shows caused by pressure is excessive when the 3rd, avoiding mud jacking valve closing
As；4th, it is used for cleaning equipment after completing mud jacking.
Slurries glue is provided with the conveyance conduit of the prestressed pore passage grout outlet connected with the stirring at low speed slurry storing tank 18
Than automatic judging device 15, for judging whether slurries water-cement ratio is qualified；And electric three-way valve 16 is provided with, three of the valve connect
Mouth connects slurries water-cement ratio automatic judging device 15, useless slurry bucket 17, stirring at low speed slurry storing tank 18 respectively, for judging slurries glue
Whether than qualified, and unqualified slurries are excluded automatically.
Be provided with relief valve 8 in prestressed pore passage stock inlet, for mud jacking terminate close ball downstream pressure it is excessive when let out
Pressure, prevents pipeline breaking and spillage.
As shown in figure 3, the slurries water-cement ratio automatic judging device includes detection container 40 and the survey into and out of slurries mouthful
Amount detection container 40 in mud jacking slurry water glue than control centre 3, the detection container 40 is supported on weighing sensor 38, by claiming
Retransmit the weight of the real-time detection detection container 40 of sensor 38；The grout outlet 41 of the detection container 40 is provided with connection useless slurry bucket
17 useless slurry feed pipe for mortar and the storage slurry feed pipe for mortar of stirring at low speed slurry storing tank 18, grout outlet slurries are controlled by the electric three-way valve
Outbound course.
The detection container 40 is used to measure the volume of slurries, and its stock inlet 36 is arranged on bottom, and grout outlet 41 is arranged on
Top；The weighing sensor 38 uses three, and the periphery of detection container 40 is evenly distributed on positioned at same level position, sets
Between detection container 40 and support 37, and it is connected with control centre 3, supports detection container 40 and the amount of measuring detection container 40
Weight data, carries out real-time monitoring, and Monitoring Data is delivered into control centre 3 for the weight to detection container 40；Threeway
Motor-driven valve 16 is arranged on the pipeline being connected with the grout outlet 41 of detection container 40, and is connected with control centre 3, for that will not conform to
Lattice slurries are discharged to useless slurry bucket 17, and qualified slurries are discharged into stirring at low speed slurry storing tank 18.
The detection container 40 is installed on one with the high-speed stirred cement slurry preparing barrel 21, stirring at low speed slurry storing tank 18, constitutes
Overall structure；Can also use Split type structure, detection container 40 is fabricated to and is individually for an assembly, by pipeline with it is corresponding
Pipeline is connected.
When the present invention is used, connection is installed by Fig. 1 structures and is finished, specific slurrying mud jacking step is as follows：
1st, the determination of water-cement ratio parameter：The maximum water-cement ratio and minimum water-cement ratio allowed according to standard, difference human configuration
Good slurries are appropriate, and fill detection container 40 by several times, are utilized respectively steady sensor 38 and measure slurries in maximum water-cement ratio
Weight W1Weight W during with minimum water-cement ratio2, by W1And W2It is set as standard value.
2nd, Automatic pulp making step：
（1）By the touch-screen |input paramete of control centre 3, including：Major ingredient, auxiliary material and water formulations, during high-speed stirred
Between, stirring at low speed time, mud jacking pressure criteria value, constant voltage time, dwell time, water-cement ratio parameter.
（2）Control valve 19 between closing high-speed stirring pulping bucket 21 and stirring at low speed slurry storing tank 18, and open circulating pump 2
With the control valve 20 of the circulation loop of high-speed stirred cement slurry preparing barrel 21.
（3）Start button, water pump 26 is powered and draws water and inject high-speed stirred cement slurry preparing barrel 21, and weighing sensor 23 claims water in real time
Weight and weight is transmitted back to control centre 3, when water reaches setting value, control centre 3 send instruction cut-out water pump 26
Power supply, water inlet stop.Then control centre 3 sends instruction, starts auxiliary material feeding motor 32, high speed stirrer motor 33 and circulation
Pump 2, stirs when auxiliary material is added.While now slurries are stirred continuously in high-speed stirred cement slurry preparing barrel 21, constantly from a high speed
21 bottoms of stirring pulping bucket are inhaled into circulating pump 2, and high-speed stirred cement slurry preparing barrel is flowed back to by loop again after the high-speed stirred of circulating pump 2
21, so constantly circulation.Weighing sensor 23 claims auxiliary material weight and is transmitted back to control centre 3 in real time, is set when auxiliary material weight reaches
During definite value, control centre 3 sends the power supply of instruction cut-out auxiliary material feeding motor 32, stops into auxiliary material.Start major ingredient feeding simultaneously
Motor 31 send major ingredient, and weighing sensor 23 claims major ingredient weight and is transmitted back to control centre 3 in real time, when major ingredient weight reaches setting value
When, control centre 3 sends the power supply of instruction cut-out major ingredient feeding motor 31, stops into major ingredient.Continue to stir, when high-speed stirred reaches
To the default time, control centre 3 sends the power supply of instruction cut-out high speed stirrer motor 33, stops high-speed stirred, but circulating pump 2
Work on.
（4）The control valve 19 between high-speed stirred cement slurry preparing barrel 21 and stirring at low speed slurry storing tank 18 is opened, and closes circulating pump 2
With the control valve 20 of the circulation loop of high-speed stirred cement slurry preparing barrel 21, slurries inflow stirring at low speed slurry storing tank 18.After slurry has been shifted,
The control valve 19 between high-speed stirred cement slurry preparing barrel 21 and stirring at low speed slurry storing tank 18 is re-closing off, and opens circulating pump 2 with high speed
The control valve 20 of the circulation loop of stirring pulping bucket 21.Start stirring at low speed motor 35, prevent slurry from condensing, prepare mud jacking, together
Shi Zaici carries out slurrying.
3rd, automatic mud jacking step：
（1）Mud jacking：The control valve 42 between stirring at low speed slurry storing tank 18 and pneumatic mortar machine 4 is opened, and pneumatic mortar machine 4 is answered with pre-
Control valve 6 between power duct 10, closes the control valve 5 of pneumatic mortar machine 4 and the circulation loop of stirring at low speed slurry storing tank 18, starts pressure
Slurry.Slurry flows since minimum prestressed pore passage to prestressed pore passage high, and unnecessary slurry is from highest prestress hole
The grout outlet outflow in road, and enter detection container 40, detection container 4 from the stock inlet 36 of slurries water-cement ratio automatic judging device 15
0 flows out and by electric three-way valve 16 full of rear slurry from grout outlet 41.The real-time detection detection container 40 of weighing sensor 38
Weight simultaneously transfers data to control centre 3 in real time, and control centre 3 is compared real-time weight data and standard value in real time,
Work as W1≤ real-time weight≤W2When, slurries water-cement ratio is qualified, and control centre 3 sends instruction, the shutoff valve of electric three-way valve 16 position B,
Valve position A is opened, slurries flow back to stirring at low speed slurry storing tank 18；When real-time weight<W1Or real-time weight>W2When, slurries water-cement ratio is not
Qualified, control centre 3 sends instruction, and the shutoff valve of electric three-way valve 16 position A opens valve position B, and slurries flow into useless slurry bucket 17.Pressure
The real-time detection pressure of sensor 9 is simultaneously transferred to control centre, and pressure gauge 7 is easy to workmen intuitively to observe.
（2）Pressurize and ftercompction are starched：When the pressure of prestress pipe stock inlet reaches the pressure criteria value of setting, stabilization is kept
Time reach constant voltage time standard value, and grout outlet outflow slurries water-cement ratio it is qualified when, control centre 3 sends instruction and stops
Mud jacking.The ball valve 13 of grout outlet is closed, starts pressurize.During pressurize, such as pressure value is dropped to below pressure criteria value, in control
The heart 3 sends instruction, and pneumatic mortar machine 4 carries out ftercompction slurry, until pressure reaches pressure criteria value.As pressure is excessive, relief valve 8 is beaten automatically
Open pressure release.
（3）Dwell time arrives, the control valve 6 closed between pneumatic mortar machine 4 and prestressed pore passage 10, and open pneumatic mortar machine 4 with
Control valve 5 on the circulation loop of stirring at low speed slurry storing tank 18, slurries are recycled directly back to stirring at low speed slurry storing tank 18 from pneumatic mortar machine 4.
The benefit one of this mode is that pneumatic mortar machine 4 can be avoided to dally and damage, and two is to avoid that pressure is excessive to cause pipeline breaking.
（4）Mud jacking data are automatically saved, mud jacking trend curve, form is automatically generated.Shut down, sealing off and covering anchorage, mud jacking work is completed.
Claims (6)
1. a kind of intelligent slurrying mud jacking system of bi-motor high-speed circulating stirring, including high-speed stirred cement slurry preparing barrel（21）, stirring at low speed
Slurry storing tank（18）, automatical feeding system（1）, pneumatic mortar machine（4）, it is provided with circulating pump（2）, the circulating pump（2）Import and export end
Connect high-speed stirred cement slurry preparing barrel（21）, constitute circulating pump and its circulation loop with high-speed stirred cement slurry preparing barrel；In pneumatic mortar machine（4）
In discharging pipeline, connection stirring at low speed slurry storing tank is set（18）Stirring at low speed circulation line, constitute pneumatic mortar machine and stirring at low speed
The circulation loop of slurry storing tank, it is characterised in that：With the stirring at low speed slurry storing tank（18）The prestressed pore passage grout outlet of connection
Conveyance conduit be provided with slurries water-cement ratio automatic judging device（15）, for judging whether slurries water-cement ratio is qualified；And be provided with
Electric three-way valve（16）, three interfaces of the valve connect slurries water-cement ratio automatic judging device respectively（15）, useless slurry bucket（17）, it is low
Speed stirring slurry storing tank（18）.
2. bi-motor high-speed circulating according to claim 1 stirs intelligent slurrying mud jacking system, it is characterised in that：The slurry
Liquid water-cement ratio automatic judging device includes the detection container into and out of slurries mouthful（40）And measurement detection container（40）Interior mud jacking slurry
The control centre of liquid water-cement ratio（3）, the detection container（40）It is supported on weighing sensor（38）, by weighing sensor（38）It is real
When detect detection container（40）Weight；In the detection container（40）Grout outlet（41）It is provided with connection useless slurry bucket（17）'s
Useless slurry feed pipe for mortar and stirring at low speed slurry storing tank（18）Storage slurry feed pipe for mortar, grout outlet slurries are controlled by the electric three-way valve
Outbound course.
3. bi-motor high-speed circulating according to claim 2 stirs intelligent slurrying mud jacking system, it is characterised in that：The inspection
Xylometer（40）The slurries mouthful of entering be located at bottom, it goes out slurries mouthful and is located at top.
4. bi-motor high-speed circulating according to claim 2 stirs intelligent slurrying mud jacking system, it is characterised in that：Described
Control centre is independent computer or is integrated on device Host.
5. bi-motor high-speed circulating according to claim 2 stirs intelligent slurrying mud jacking system, it is characterised in that：Described
Weighing sensor（38）Three are at least used, detection container is evenly distributed on positioned at same level position（40）Periphery.
6. the bi-motor high-speed circulating according to Claims 2 or 3 or 5 stirs intelligent slurrying mud jacking system, it is characterised in that：
The detection container（40）Can be with the high-speed stirred cement slurry preparing barrel（21）, stirring at low speed slurry storing tank（18）It is installed on one, structure
Integral structure, it would however also be possible to employ Split type structure, is fabricated to an independent assembly, is connected with corresponding pipeline by pipeline.
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| CN201410825888.2A CN104532752B (en) | 2014-12-26 | 2014-12-26 | Intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system |
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| CN201410825888.2A CN104532752B (en) | 2014-12-26 | 2014-12-26 | Intelligent dual-motor high-speed circulating stirring mortar preparing and pressing system |
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| CN104532752B true CN104532752B (en) | 2017-05-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106436582B (en) * | 2016-10-15 | 2018-04-20 | 中国铁道科学研究院铁道建筑研究所 | A kind of railway aids in the automatic mud jacking all-in-one machine of vacuum |
| CN106638317A (en) * | 2016-11-25 | 2017-05-10 | 柳州市邱姆预应力机械有限公司 | Intelligent large grouting equipment |
| JP7034002B2 (en) * | 2018-04-26 | 2022-03-11 | 極東産機株式会社 | Glue stirring supply system of automatic wallpaper gluing machine |
| CN109137755A (en) * | 2018-10-26 | 2019-01-04 | 长沙小如信息科技有限公司 | A kind of prestressing force Intelligent mud jacking machine |
| CN110181692A (en) * | 2019-02-27 | 2019-08-30 | 镇江长城注浆设备有限公司 | The dustless slurrying filling pumping plant of unpacking of mining jumbo bag |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS56124465A (en) * | 1980-03-05 | 1981-09-30 | Gijutsu Shigen Kaihatsu Kk | Method and apparatus for spraying cement mortar, etc. |
| CN202805411U (en) * | 2012-07-30 | 2013-03-20 | 浙江省宏途交通建设有限公司 | Automatic mud-jack all-in-one machine of prestressed aperture |
| CN103711317A (en) * | 2013-12-17 | 2014-04-09 | 柳州黔桥工程材料有限公司 | Intelligent pulping and grouting system |
| CN203755168U (en) * | 2014-02-12 | 2014-08-06 | 湖南聚创建筑科技有限公司 | Double-circulation type automatic pulping and grouting system |
| CN104131705B (en) * | 2014-07-29 | 2016-04-06 | 重庆华式土木建筑技术开发有限公司 | A kind of grouting chassis |
| CN204455828U (en) * | 2014-12-26 | 2015-07-08 | 柳州黔桥工程材料有限公司 | Bi-motor high-speed circulating stirs intelligent slurrying mud jacking system |
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Address after: 545112 Sifang Industrial Zone, Xinxing Industrial Park, the Liujiang River County, Liuzhou, the Guangxi Zhuang Autonomous Region Patentee after: Liuzhou Qianqiao Technology Co.,Ltd. Address before: 545112 Sifang Industrial Zone, Xinxing Industrial Park, the Liujiang River County, Liuzhou, the Guangxi Zhuang Autonomous Region Patentee before: LIUZHOU QIAN BRIDGE ENGINEERING MATERIALS Co.,Ltd. |
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