CN107605158A - A kind of concrete spraying method of grouter - Google Patents
A kind of concrete spraying method of grouter Download PDFInfo
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- CN107605158A CN107605158A CN201710949731.4A CN201710949731A CN107605158A CN 107605158 A CN107605158 A CN 107605158A CN 201710949731 A CN201710949731 A CN 201710949731A CN 107605158 A CN107605158 A CN 107605158A
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Abstract
The invention discloses a kind of concrete spraying method of grouter, it is characterized in that, including the single-screw (single screw) pump being fixed in frame, rabbling mechanism and electric cabinet, the frame has roller, the slip casting motor and stirring motor are connected on electric cabinet, hopper is provided with below rabbling mechanism, the hopper bottom is connected to single-screw (single screw) pump, the delivery outlet connection whitewashing mechanism of single-screw (single screw) pump, the whitewashing mechanism includes air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer are connected with spray head respectively, pneumatics device and accelerator conveyer are connected by wire with electric cabinet.Beneficial effect：Present application addresses the strict demand in engineering to the mortar ratio of mud and grouting pressure, easily can be irrigated the mortar in ratio of mud scope of design, and reach design pressure.The pump can configure injector simultaneously, and spray shield construction can be carried out to tunnel metope.
Description
This case is divisional application, and parent application number is 2015105784946, the applying date 20150914.
Technical field
The present invention relates to the grouter and its concrete spraying method of a kind of band whitewashing mechanism.
Background technology
The existing mixer with single-screw (single screw) pump conveying mechanism mainly uses the stirring master of vertical mixing mechanism, i.e. mixer
Axle has the advantages of floor space is small perpendicular to ground level, this vertical mixer, still, due to its feed level and equipment weight
The heart is higher, thus adds the working strength of feeding, reduces the job stability of equipment.
The ratio of mud is to determine concrete quality and an important parameter of durability, therefore Accurate Determining fresh concrete
The ratio of mud is actual to engineering extremely important meaning.Summarize herein and discuss fresh concrete water ash reported in the literature
Compare assay method.Wherein microwave method is one of method most simple and practical so far, but it can only determine and newly mix in thing
Water content, the method that need to combine other measure cement contents just can determine that the ratio of mud.Resistivity method precision is high, but need to pre-establish
Relation curve between the ratio of mud and resistivity.Other method or precision deficiencies, or lack field operation, from without obtaining
Extensive accreditation.Herein the assay method of cement content in fresh concrete is also carried out looking back and discussing.Combined bolting and shotcrete energy
The intensity and self-stable ability of Rock And Soil itself are effectively called, is to improve geotechnical stability and the complicated Geotechnical Engineering stable problem of solution
One of most economical effective method, combined bolting and shotcrete be unable to do without grouting technique, and design and the requirement constructed to anchoring perfusion slurry are more next
It is higher, various constructions《Specification》Strict regulation, in general perfusion are have also been made to the ratio of mud for filling grouting pressure and cement mortar
Slurry equipment is difficult to meet.Some present grouter functions are single, operation inconvenience, take substantial amounts of human and material resources.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided a kind of grouter of band whitewashing mechanism, structure letter
Single, all parts are separate and cooperate again, and conveying function, agitating function, whitewashing function are, between each function
Close fit, it is independent of each other, effectively improves operating efficiency；Its control system and control method can be operated conveniently, and structure letter
The ratio of mud that is single, improving the utilization rate of concrete thick slurry and be optimal, sprayed during sprinkling uniformly, power consumption is low, sprays
Metope qualification rate it is high, its stage working method can reduce the impact to equipment, improve service life of equipment.
The technical solution adopted by the present invention is as follows：
The invention discloses a kind of band whitewashing mechanism grouter, including be fixed in frame single-screw (single screw) pump, rabbling mechanism and
Electric cabinet, the frame have roller, and the slip casting motor and stirring motor are connected on electric cabinet, are set below rabbling mechanism
Hopper is equipped with, the hopper bottom is connected to single-screw (single screw) pump, the delivery outlet connection whitewashing mechanism of single-screw (single screw) pump, and the whitewashing mechanism includes
Air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer are connected with spray head respectively, pneumatics device and rapid hardening
Agent conveyer is connected by wire with electric cabinet.
Further, the bottom of the rabbling mechanism is provided with discharging opening, and the discharge outlet is provided with discharge valve, the discharging
The charging aperture of mouth alignment hopper；The top of rabbling mechanism is provided with water inlet, and water inlet is provided with inlet valve.
Further, the agitator tank of the rabbling mechanism including upper opening, accumbency are arranged at the stirring in the middle part of agitator tank
Axle, the stirring vane being connected on agitating shaft and the stirring motor for being connected to agitating shaft end, the stirring motor is positioned at stirring
Outside case.
Further, the single-screw (single screw) pump is fixed on frame front, casting head that the single-screw (single screw) pump includes being sequentially connected with,
Plenum, feeding portion and slip casting motor, the feeding portion are located at below rabbling mechanism and connect hopper.
Said structure can isolate agitating function and conveying function, can while conveying configured good concrete thick slurry
To carry out the preparation of the concrete thick slurry of a new round.Two parts functional independence is set to work and cooperate, two functions are realized in mitigation
Device between dependence, while mitigate work pressure and change equipment technological process, realize the raising of grouting efficiency.
During whitewashing, whitewashing is uniform, and spraying area is constant, and the metope qualification rate after whitewashing is high.
Further, control system is additionally provided with, the control system includes：
Sampled measurements unit, inside rabbling mechanism, including sampler and measuring instrument, sampler are the container with opening,
Measuring instrument is placed in sampler, for being sampled to the concrete thick slurry in rabbling mechanism；
Agitating unit, including rabbling mechanism, rabbling mechanism includes the agitator tank of upper opening, accumbency is arranged in the middle part of agitator tank
Agitating shaft, the stirring vane being connected on agitating shaft, the stirring motor for being connected to agitating shaft end；For in rabbling mechanism
The mixture in mixed territory and water is stirred to suitable denseness, reaches the ratio of mud W/C of setting；
Supply unit, including single-screw (single screw) pump, single-screw (single screw) pump include casting head, plenum, feeding portion, slip casting motor, feeding portion with
Hopper is connected, and plenum includes stator and the rotor in stator, and feeding portion includes feeding chamber and is placed in the spiral shell of feeding intracavitary
Bar, screw rod are connected with rotor；The concrete thick slurry that supply unit is used to be up to setting ratio of mud W/C is by single-screw (single screw) pump with one
Fixed pressure grouting conveying；
Water injection unit, including water injection pipe, Water filling valve, water injection pipe are connected on rabbling mechanism, Water filling valve control water injection；
Grouting measuring unit, located at the exit of casting head, including pressure sensor, the grouting pressure in measurement casting head exit
And transmit the signal to control unit；
Whitewash unit, including air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer respectively with spray head
It is connected, pneumatics device and accelerator conveyer are connected by wire with control unit；
Control unit, for controlling the mutual cooperation of above-mentioned modules, complete stirring, sampling, conveying, water filling, moving of whitewashing
Make；
Power supply unit, including generator, voltage-stablizer, voltage input, voltage output, for being powered for above-mentioned unit.
Above-mentioned control system is automatic control system, can be efficient between unit independently of each other and cooperating
The institutional operation that thick slurry is prepared, conveys, sprayed is realized, is gathered multi -function in integral whole, reduces the number of devices for completing above-mentioned work
With manpower and materials occupancy volume, production prepares cost 20% is saved, is effectively realized energy-saving.
Further, the concrete spraying method of the control system：
（1）, concrete thick slurry after single-screw (single screw) pump exports, control unit controls air compressor machine and gradually to be boosted from spray head air-out,
Its wind pressure of work is（0.3-0.6）Mpa, blast consumption are more than or equal to 3.0 cubic meters per minutes；
（2）, concrete thick slurry from Grouting Pipe with（50-85）L/min speed pulp, and mixed with the wind that air compressor machine extracts
After spray out；
（3）, control unit control accelerator conveying device accelerator is conveyed at spray head, accelerator is mixed with concrete thick slurry
Close.
（4）, at spray head, control unit control slurry-outlet quantity：Accelerator conveying capacity：Blast consumption=（50-85）：（1-
1.2）：（3000-4000）.
Above-mentioned gunnite method, accelerator, blast consumption, slurry-outlet quantity can well be arranged in pairs or groups, realize that three coordinates, make to be sprayed onto
Rapid hardening speed after metope improves, it is possible to increase the qualification rate in concrete spraying face, effectively improves the utilization rate 10%- of concrete
15%.Avoid wind-force excessive, or accelerator ratio is inadequate, makes concrete diverging excessive, influences operating efficiency and sprinkling qualification rate.
Improve operating efficiency and reduce manpower and materials occupancy, saved cost of labor and time cost, solved in engineering to mortar water
The strict demand of gray scale and grouting pressure, easily the mortar in ratio of mud scope of design can be irrigated, and reach and set
Count pressure.The pump can configure injector simultaneously, and spray shield construction can be carried out to tunnel metope.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the application employs American-European advanced worm screw supercharging technology, similar through research and probe for many years, collection with reference to domestic construction status
Product advantage and release the novel high-pressure with independent intellectual property right, thick slurry, the anchor grouting pump of big flow, solve in engineering
Strict demand to the mortar ratio of mud and grouting pressure, easily the mortar in ratio of mud scope of design can be irrigated,
And reach design pressure.The pump can configure injector simultaneously, and spray shield construction can be carried out to tunnel metope.
2nd, this structure is novel, design is unique；Avoid and irrigate the more difficult deficiency of thick slurry, safe and convenient to use, efficiency high,
The machine is mainly made up of agitating device, operating mechanism, defeated slurry, supercharging worm screw, supercharging stator, pressure tester, electric-control system etc.,
When being protected for spraying, in addition to injector.
3rd, in partial pressure to the connecting rod for shifting plenum, the fatigue strength of plenum is reduced, extends making for single-screw (single screw) pump
Use the life-span.Rationally fasten the positional structure of overlap in itself using plenum, strengthen and stablize its structural strength, compact-sized letter
Single, performance brilliance, price economy, Operation and Maintenance are easy.In light weight, wheel type design, conveniently moving.
4th, can big, the particularly suitable high concentration design requirement of grouting liquid ratio of mud scope thick slurry.Can reperfusion serosity dust and sand ratio
Greatly, sand grains particle size range is wide.Mortar continuous uniform during spraying, avoid the excessive instantaneous fluctuation pressure of piston pump.According to mortar
Denseness and slurry-outlet quantity regulation air quantity, reach preferable thin stream spraying effect, easy to operation and control.
5th, the machine is single liquid machine, it is impossible to adds accelerator class additive；Supporting air compressor machine user is needed to provide for oneself during spraying, this
Machine can use as perfusion equipment.The machine can be widely used for the spray shield construction of urban architecture engineering inner-outer wall bottom and finishing coat
Such as the spraying such as the dry-mixed mortar of the various uses of Site, coating and pumping；Available for highway, railway tunnel, city
The anchor groutings such as iron, Hydropower Station Underground cavern, consolidation grouting and backfill fill Grouting engineering；It can also be used to dam, side slope, soft rock add
Gu when the Grouting engineering such as soil layer.
Brief description of the drawings
Fig. 1 is a kind of grouter front view of band whitewashing mechanism in the present invention；
Marked in figure：1- single-screw (single screw) pumps, 2- frames, 3- rabbling mechanisms, 4- electric cabinets.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific embodiment 1：
As shown in Figure 1：
The invention discloses a kind of grouter of band whitewashing mechanism, including the single-screw (single screw) pump 1 and rabbling mechanism being fixed in frame 2
3, the lower section of rabbling mechanism 3 is provided with hopper, and the hopper bottom is connected with single-screw (single screw) pump 1, and single-screw (single screw) pump 1 is located at stirring structure
Lower section, rabbling mechanism 3 vacantly sets relative to hopper.Electric cabinet 4 is additionally provided with frame 2, frame 2 has roller, frame 2
Middle part is provided with generator, and motor of the electric cabinet 4 respectively with rabbling mechanism 3 and single-screw (single screw) pump 1 electrically connects.Electric cabinet 4 is used to include
Control circuit, pass through the overall work of control circuit controlled grouting machine and stirring, conveying, whitewashing flow.The output of single-screw (single screw) pump
Mouth connection whitewashing mechanism, the whitewashing mechanism include air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer
It is connected respectively with spray head, pneumatics device and accelerator conveyer are connected by wire with electric cabinet.
Single-screw (single screw) pump 1 is fixed on the front portion of frame 2, including casting head, plenum, feeding portion, the slip casting motor being sequentially connected with,
The feeding portion is located at the lower section of rabbling mechanism 3 and connects hopper.Casting head, plenum, feeding portion, slip casting motor head and the tail phase successively
Even.Casting head includes the slip casting chamber of bucket type, the exit of casting head is provided with pressure gauge, for measuring grouting pressure.Supercharging
Portion includes stator and the rotor in stator, and feeding portion includes feeding chamber and screw rod, and screw rod is connected with rotor, stator and feeding
Chamber is connected, the rotating shaft of one end connection slip casting motor of the screw rod away from rotor, connection hopper on the upside of feeding chamber.
The agitator tank of rabbling mechanism 3 including upper opening, accumbency are arranged at agitating shaft in the middle part of agitator tank, are connected to stirring
Stirring vane on axle, the stirring motor for being connected to agitating shaft end.The power of stirring motor is 2.2-5.5kw.Stirring motor
The bottom of rabbling mechanism 3 is provided with discharging opening outside agitator tank, and the discharging opening is relative with hopper, and discharging opening is directed at the charging of hopper
Mouthful, discharging opening is provided with discharge valve；The top of agitating device is provided with water inlet, and water inlet is provided with inlet valve.Mixer
In the concrete thick slurry that makes enter by discharging opening in hopper below, water inlet is used for the water filling into agitator tank.
Said structure can isolate agitating function and conveying function, can while conveying configured good concrete thick slurry
To carry out the preparation of the concrete thick slurry of a new round.Two parts functional independence is set to work and cooperate, two functions are realized in mitigation
Device between dependence, while mitigate work pressure and change equipment technological process, realize the raising of grouting efficiency.
Specific embodiment 2：
The control system of grouter based on above-mentioned band whitewashing mechanism, including：
Sampled measurements unit, inside rabbling mechanism 3, including sampler and measuring instrument, sampler are the container with opening,
Measuring instrument is placed in sampler, for being sampled to the concrete thick slurry in rabbling mechanism 3；
Agitating unit, including rabbling mechanism 3, rabbling mechanism 3 includes the agitator tank of upper opening, accumbency is arranged in the middle part of agitator tank
Agitating shaft, be connected on agitating shaft stirring vane, be connected to the stirring motor of agitating shaft end；For to rabbling mechanism 3
The interior mixture by mixed territory and water is stirred to suitable denseness, reaches the ratio of mud W/C of setting；
Supply unit, including single-screw (single screw) pump 1, single-screw (single screw) pump 1 include casting head, plenum, feeding portion, slip casting motor, feeding portion
It is connected with hopper, plenum includes stator and the rotor in stator, and feeding portion includes feeding chamber and is placed in feeding intracavitary
Screw rod, screw rod are connected with rotor；The concrete thick slurry that supply unit is used to be up to setting ratio of mud W/C passes through single-screw (single screw) pump 1
Conveyed with certain pressure grouting；
Water injection unit, including water injection pipe, Water filling valve, water injection pipe are connected on rabbling mechanism 3, Water filling valve control water note
Enter；
Grouting measuring unit, located at the exit of casting head, including pressure sensor, the grouting pressure in measurement casting head exit
And transmit the signal to control unit；
Whitewash unit, including air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer respectively with spray head
It is connected, pneumatics device and accelerator conveyer are connected by wire with control unit；
Control unit, for controlling the mutual cooperation of above-mentioned modules, complete stirring, sampling, conveying, water filling, moving of whitewashing
Make；
Power supply unit, including generator, voltage-stablizer, voltage input, voltage output, for being powered for above-mentioned unit.
Above-mentioned control system is automatic control system, can be efficient between unit independently of each other and cooperating
The institutional operation that thick slurry is prepared, conveys, sprayed is realized, is gathered multi -function in integral whole, reduces the number of devices for completing above-mentioned work
With manpower and materials occupancy volume, production prepares cost 20% is saved, is effectively realized energy-saving.
Specific embodiment 3：
The concrete spraying method of control system based on embodiment 2
（1）, concrete thick slurry after the output of single-screw (single screw) pump 1, control unit controls air compressor machine and gradually to be risen from spray head air-out
Pressure, its wind pressure of work are（0.3-0.6）Mpa, blast consumption are more than or equal to 3.0 cubic meters per minutes；
（2）, concrete thick slurry from Grouting Pipe with（50-85）L/min speed pulp, and mixed with the wind that air compressor machine extracts
After spray out；
（3）, control unit control accelerator conveying device accelerator is conveyed at spray head, accelerator is mixed with concrete thick slurry
Close.
（4）, at spray head, control unit control slurry-outlet quantity：Accelerator conveying capacity：Blast consumption=（50-85）：（1-
1.2）：（3000-4000）.
Above-mentioned gunnite method, accelerator, blast consumption, slurry-outlet quantity can well be arranged in pairs or groups, realize that three coordinates, make to be sprayed onto
Rapid hardening speed after metope improves, it is possible to increase the qualification rate in concrete spraying face, effectively improves the utilization rate 10%- of concrete
15%.Avoid wind-force excessive, or accelerator ratio is inadequate, makes concrete diverging excessive, influences operating efficiency and sprinkling qualification rate.
Improve operating efficiency and reduce manpower and materials occupancy, saved cost of labor and time cost, solved in engineering to mortar water
The strict demand of gray scale and grouting pressure, easily the mortar in ratio of mud scope of design can be irrigated, and reach and set
Count pressure.The pump can configure injector simultaneously, and spray shield construction can be carried out to tunnel metope.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. a kind of concrete spraying method of grouter, it is characterised in that including：
Sampled measurements unit, inside rabbling mechanism, including sampler and measuring instrument, sampler are the container with opening,
Measuring instrument is placed in sampler, for being sampled to the concrete thick slurry in rabbling mechanism；
Agitating unit, including rabbling mechanism, rabbling mechanism includes the agitator tank of upper opening, accumbency is arranged in the middle part of agitator tank
Agitating shaft, the stirring vane being connected on agitating shaft, the stirring motor for being connected to agitating shaft end；For in rabbling mechanism
The mixture of concrete and water is stirred to suitable denseness, reaches the ratio of mud W/C of setting；
Supply unit, including single-screw (single screw) pump, single-screw (single screw) pump include casting head, plenum, feeding portion, slip casting motor, feeding portion with
Hopper is connected, and plenum includes stator and the rotor in stator, and feeding portion includes feeding chamber and is placed in the spiral shell of feeding intracavitary
Bar, screw rod are connected with rotor；The concrete thick slurry that supply unit is used to be up to setting ratio of mud W/C is by single-screw (single screw) pump with one
Fixed pressure grouting conveying；
Water injection unit, water injection unit are connected with rabbling mechanism；
Grouting measuring unit, located at the exit of casting head, including pressure sensor, the grouting pressure in measurement casting head exit
And transmit a signal to control unit；
Whitewash unit, including air compressor machine, spray head, accelerator conveyer, pneumatics device and accelerator conveyer respectively with spray head
It is connected, pneumatics device and accelerator conveyer are connected by wire with control unit；
Control unit, for controlling the mutual cooperation of above-mentioned modules, complete stirring, sampling, conveying, water filling, moving of whitewashing
Make；Above-mentioned each unit is connected with power supply unit；
The concrete spraying method comprises the following steps：
Step 1: concrete thick slurry, after single-screw (single screw) pump exports, control unit controls air compressor machine from spray head air-out, and gradually rises
Pressure, its wind pressure of work are（0.3-0.6）Mpa, blast consumption are more than or equal to 3.0 cubic meters per minutes；
Step 2: concrete thick slurry from Grouting Pipe with（50-85）L/min speed pulp, and the wind extracted with air compressor machine is carried out
Sprayed out after mixing；
Step 3: control unit control accelerator conveying device conveys accelerator at spray head, make accelerator thick with concrete
Slurry mixing.
2. the concrete spraying method of grouter according to claim 1, it is characterised in that in step 3, in spray head
Place, control unit control slurry-outlet quantity：Accelerator conveying capacity：Blast consumption=（50-85）：（1-1.2）：（3000-4000）.
3. the concrete spraying method of grouter according to claim 1, it is characterised in that said supply unit includes hair
Motor, voltage-stablizer, voltage input, voltage output.
4. the concrete spraying method of the grouter according to claim 1 or 2 or 3, it is characterised in that the water injection unit
Including water injection pipe, Water filling valve, water injection pipe is connected on rabbling mechanism, Water filling valve control water injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949731.4A CN107605158B (en) | 2015-09-14 | 2015-09-14 | A kind of concrete spraying method of grouter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710949731.4A CN107605158B (en) | 2015-09-14 | 2015-09-14 | A kind of concrete spraying method of grouter |
| CN201510578494.6A CN105298131B (en) | 2015-09-14 | 2015-09-14 | A kind of grouter and concrete spraying method of band whitewashing mechanism |
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| CN201510578494.6A Division CN105298131B (en) | 2015-09-14 | 2015-09-14 | A kind of grouter and concrete spraying method of band whitewashing mechanism |
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| CN107605158A true CN107605158A (en) | 2018-01-19 |
| CN107605158B CN107605158B (en) | 2019-07-16 |
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| CN201710949731.4A Active CN107605158B (en) | 2015-09-14 | 2015-09-14 | A kind of concrete spraying method of grouter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113356894A (en) * | 2021-07-23 | 2021-09-07 | 山东东山新驿煤矿有限公司 | Remote electric control guniting pressurization system |
| CN114318969A (en) * | 2021-12-28 | 2022-04-12 | 株洲中车特种装备科技有限公司 | Self-compaction concrete construction equipment |
| CN114737780A (en) * | 2022-04-12 | 2022-07-12 | 湖南教建集团有限公司 | Premixed mortar thin plastering construction method |
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| CN107876238B (en) * | 2017-11-17 | 2019-06-14 | 中建二局第二建筑工程有限公司 | Auxiliary transmission device is sprayed in a kind of construction at a distance |
| CN110258343A (en) * | 2019-07-01 | 2019-09-20 | 长沙秋点兵信息科技有限公司 | A kind of automatic spouting plant for tunnel bridge construction |
| CN112282790A (en) * | 2020-09-16 | 2021-01-29 | 贵州大学 | Slurry stirring self-injection equipment |
| CN112875190B (en) * | 2021-01-26 | 2023-05-09 | 广东粤皖混凝土有限公司 | Transportation device and transportation method for concrete mortar |
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| CN202645010U (en) * | 2012-06-20 | 2013-01-02 | 徐小魄 | Concrete spraying unit |
| CN204253363U (en) * | 2014-07-15 | 2015-04-08 | 瑞派尔（宜昌）科技集团有限责任公司 | Self-controlled type gear pump grouter |
| CN203961304U (en) * | 2014-07-18 | 2014-11-26 | 福建省岚睿工程机械有限公司 | The dual hopper device of fully automatic feeding pulp shooting machine |
| CN104727555A (en) * | 2015-01-30 | 2015-06-24 | 胡维毅 | Full-automatic mortar conveying machine capable of automatically controlling conveying amount |
| CN104863159A (en) * | 2015-06-12 | 2015-08-26 | 中国长江三峡集团公司 | Integrated intelligent grouting system |
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| CN113356894A (en) * | 2021-07-23 | 2021-09-07 | 山东东山新驿煤矿有限公司 | Remote electric control guniting pressurization system |
| CN114318969A (en) * | 2021-12-28 | 2022-04-12 | 株洲中车特种装备科技有限公司 | Self-compaction concrete construction equipment |
| CN114318969B (en) * | 2021-12-28 | 2023-11-10 | 株洲中车特种装备科技有限公司 | Self-compacting concrete construction equipment |
| CN114737780A (en) * | 2022-04-12 | 2022-07-12 | 湖南教建集团有限公司 | Premixed mortar thin plastering construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105298131B (en) | 2017-12-19 |
| CN105298131A (en) | 2016-02-03 |
| CN107605158B (en) | 2019-07-16 |
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