CN105298131A - Grouter with spray mechanism and concrete spraying method thereof - Google Patents
Grouter with spray mechanism and concrete spraying method thereof Download PDFInfo
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- CN105298131A CN105298131A CN201510578494.6A CN201510578494A CN105298131A CN 105298131 A CN105298131 A CN 105298131A CN 201510578494 A CN201510578494 A CN 201510578494A CN 105298131 A CN105298131 A CN 105298131A
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Abstract
The invention discloses a grouter with a spray mechanism and a concrete spraying method thereof. The grouter is characterized by comprising a single screw pump fixed on a frame, a stirring mechanism and an electrical box. Rollers are disposed below the frame. A grouting motor and the stirring motor are connected to the electrical box. A hopper is disposed below the stirring mechanism. The lower portion of the hopper is connected to the single screw pump. A discharge outlet of the single screw pump is connected with the spray mechanism. The spray mechanism comprises an air compressor, a spray nozzle, and an accelerator conveyer. The air compressor and the accelerator conveyer are separately connected with the spray nozzle. The air compressor and the accelerator conveyer are connected with the electrical box through wires. The invention has the advantages that the strict requirements of engineering for mortar water-cement ratio and grouting pressure are satisfied, mortar with a water-cement ratio in a design range can be easily grouted, and the design pressure is reached; meanwhile, the pump can be fitted with a sprayer, and a roadway wall can be sprayed under protection.
Description
Technical field
The present invention relates to a kind of with the whitewashing grouting machine of mechanism and concrete spraying method thereof
Background technology
The existing mixer with single-screw (single screw) pump conveying mechanism mainly adopts vertical mixing mechanism, namely the stirring main shaft of mixer is perpendicular to ground line, this vertical mixer has the little advantage of floor space, but, due to its feed level and equipment center of gravity higher, thus add the working strength of feeding, reduce the job stability of equipment.
Water/binder ratio is the important parameter determining concrete quality and durability, and therefore the water/binder ratio of Accurate Determining green concrete has earth shaking meaning to engineering is actual.Sum up herein and discuss the water cement ratio of fresh concrete assay method reported in document.Wherein microwave method is one of method the most simple and practical so far, but it can only measure the water content of newly mixing in thing, and the method that need measure cement factor in conjunction with other could determine water/binder ratio.Resistivity method precision is high, but need set up the relation curve between water/binder ratio and resistivity in advance.Other method or precision deficiency, or lack execute-in-place, thus do not approved widely.Also carried out looking back and discussing to the assay method of cement factor in green concrete herein.Combined bolting and shotcrete effectively can call intensity and the self-stable ability of Rock And Soil self, improve geotechnical stability and solve one of most economical effective method of complicated geotechnical engineering stable problem, combined bolting and shotcrete be unable to do without grouting technique, the requirement that design and construction are starched anchoring perfusion is more and more higher, various construction " specification " have also been made strict regulation to the water/binder ratio of filling with grouting pressure and cement mortar, and general filling grouting equipment is difficult to meet.Some present grouting machine function singlenesses, operation inconvenience, takies a large amount of human and material resources.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of grouting machine with whitewashing mechanism is provided, structure is simple, all parts is separate and cooperatively interact again, and conveying function, agitating function, whitewashing function, close fit between each function, is independent of each other, and effectively increases work efficiency; Its control system and control method can handled easilies, and structure is simple, improve the utilization rate of the thick slurry of concrete and reach optimum water/binder ratio, spray evenly in sprinkling process, consume energy low, the metope qualification rate of spraying is high, and its stage working method can reduce the impact to equipment, improves service life of equipment.
The technical solution used in the present invention is as follows:
The invention discloses a kind of grouting machine with whitewashing mechanism, comprise the single-screw (single screw) pump be fixed in frame, rabbling mechanism and electric control box, described frame has roller, described slip casting motor and stirring motor are connected on electric control box, hopper is provided with below rabbling mechanism, this hopper bottom is connected to single-screw (single screw) pump, the delivery outlet of single-screw (single screw) pump connects whitewashing mechanism, this whitewashing mechanism comprises air compressor machine, spray head, accelerating admixture conveyer, pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with electric control box by wire with accelerating admixture conveyer.
Further, the bottom of described rabbling mechanism is provided with discharging opening, and described discharge outlet is provided with discharge valve, and this discharging opening aims at the charging aperture of hopper; The top of rabbling mechanism is provided with water inlet, and water inlet is provided with inlet valve.
Further, described rabbling mechanism comprises the agitator tank of upper opening, accumbency is arranged at shaft in the middle part of agitator tank, be connected to the stirring vane on shaft and be connected to the stirring motor of shaft end, and described stirring motor is positioned at outside agitator tank.
Further, described single-screw (single screw) pump is fixed on frame front, described single-screw (single screw) pump comprise connect in turn casting head, plenum, feeding portion and slip casting motor, described feeding portion to be positioned at below rabbling mechanism and to connect hopper.
Said structure can isolate agitating function and conveying function, while carrying the thick slurry of concrete configured, can carry out the preparation of the thick slurry of concrete of a new round.Make the work of two parts functional independence and cooperatively interact, alleviating the dependence between the device realizing two functions, alleviate the pressure of work simultaneously and change the technological process of equipment, realizing the raising of grouting efficiency.During whitewashing, evenly, spraying area is constant, and the metope qualification rate after whitewashing is high in whitewashing.
Further, be also provided with control system, this control system comprises:
Sampled measurements unit, is located at rabbling mechanism inside, comprises sampler and measuring instrument, and sampler is the container with opening, and measuring instrument is placed in sampler, for sampling the thick slurry of the concrete in rabbling mechanism;
Agitating unit, comprises rabbling mechanism, and rabbling mechanism comprises the agitator tank of upper opening, accumbency is arranged at the shaft in the middle part of agitator tank, the stirring vane be connected on shaft, be connected to the stirring motor of shaft end; For to the mixture of mixed territory and water being stirred to suitable denseness in rabbling mechanism, reach the water/binder ratio W/C of setting;
Supply unit, comprises single-screw (single screw) pump, and single-screw (single screw) pump comprises casting head, plenum, feeding portion, slip casting motor, feeding portion is connected with hopper, plenum comprises stator and is located at the rotor in stator, and feeding portion comprises feeding chamber and is placed in the screw rod in feeding chamber, and screw rod is connected with rotor; Supply unit is used for the thick slurry of concrete reaching setting water/binder ratio W/C to be carried with certain pressure grouting by single-screw (single screw) pump;
Water injection unit, comprises water injection pipe, Water filling valve, and water injection pipe is connected on rabbling mechanism, and Water filling valve controls the water yield and injects;
Grouting measuring unit, be located at the exit of casting head, comprise pressure sensor, measure casting head exit grouting pressure and by this Signal transmissions to control unit;
Whitewashing unit, comprise air compressor machine, spray head, accelerating admixture conveyer, pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with control unit by wire with accelerating admixture conveyer;
Control unit, for controlling cooperatively interacting of above-mentioned modules, completes the action of stirring, sampling, conveying, water filling, whitewashing;
Power supply unit, comprises generator, stabilizator, voltage input, voltage output, for powering for above-mentioned unit.
Above-mentioned control system is automatic control system, separate and cooperating between unit, the institutional operation of thick slurry preparation, conveying, sprinkling can be realized efficiently, gather multi-function in integral whole, number of devices and the manpower and materials occupancy volume of above-mentioned work are reduced, save 20% of manufacture cost, effectively realize energy-saving and cost-reducing.
Further, the concrete spraying method of this control system:
(1), the thick slurry of concrete after single-screw (single screw) pump exports, control unit controls air compressor machine from spray head air-out, and boost gradually, its wind pressure of work is (0.3-0.6) Mpa, blast consumption is more than or equal to 3.0 cubic meters per minute;
(2), the thick slurry of concrete, and to spray out after mixing with the wind that air compressor machine extracts from Grouting Pipe with the speed pulp of (50-85) L/min;
(3), control unit controls accelerating admixture conveying device from spray head conveying accelerating admixture, and thick slurry of accelerating admixture and concrete is mixed.
(4), at spray head place, control unit controls slurry-outlet quantity: accelerating admixture conveying capacity: blast consumption=(50-85): (1-1.2): (3000-4000).
Above-mentioned gunnite method, well can arrange in pairs or groups accelerating admixture, blast consumption, slurry-outlet quantity, realizes three and coordinates, make after being sprayed onto metope rapid hardening speed improve, the qualification rate in concrete spraying face can be improved, effectively improve concrete utilization rate 10%-15%.Avoid wind-force excessive, or accelerating admixture ratio is inadequate, and concrete is dispersed too much, affects operating efficiency and spray qualification rate.Increase work efficiency and reduce manpower and materials occupancy, cost of labor and time cost are saved, solve the strict demand to mortar water/binder ratio and grouting pressure in engineering, like a cork the mortar in water/binder ratio scope of design can be poured into, and reach design pressure.The configurable ejector of this pump simultaneously, and spray can be carried out to tunnel metope and protect construction.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
1, the application have employed American-European advanced worm screw supercharging technology, in conjunction with domestic construction status, through research and probe for many years, collection like product advantage and release the anchor grouting pump of the novel high-pressure with independent intellectual property right, thick slurry, large discharge, solve the strict demand to mortar water/binder ratio and grouting pressure in engineering, like a cork the mortar in water/binder ratio scope of design can be poured into, and reach design pressure.The configurable ejector of this pump simultaneously, and spray can be carried out to tunnel metope and protect construction.
2, this novel structure, design uniqueness; Avoid the more difficult deficiency of the thick slurry of perfusion, safe and convenient to use, efficiency is high, the machine, primarily of compositions such as mixing plant, operating mechanism, defeated slurry, supercharging worm screw, supercharging stator, pressure tester, electric-control systems, when protecting for spray, also comprises ejector.
3, shift the partial pressure of plenum on connecting rod, reduce the fatigue strength of plenum, extend the application life of single-screw (single screw) pump.The positional structure of the fastening overlap of Appropriate application plenum itself, strengthens and stablizes its structural strength, compact conformation is simple, performance is remarkable, price economy, and Operation and Maintenance is easy.Lightweight, wheel type design, conveniently moving.
4, can grouting liquid water/binder ratio scope greatly, the thick slurry of suitable especially high concentration designing requirement.Can compare large by reperfusion serosity dust and sand, sand grains particle size range be wide.Mortar continuous uniform during spraying, avoids the instantaneous pressure fluctuation meter that piston pump is excessive.Regulate air quantity according to consistency of mortar and slurry-outlet quantity, reach desirable thin stream spraying effect, convenient operation and control.
5, the machine is single liquid machine, can not add accelerating admixture class Admixture; Need supporting air compressor machine user to provide for oneself during spraying, the machine can use as perfusion equipment.Spraying and the pumping such as dry-mixed mortar, coating of the various uses of such as Site of constructing are protected in the spray that the machine can be widely used in urban architecture engineering inner-outer wall bottom and skin coat; Can be used for the anchor groutings such as highway, railway tunnel, city underground, Hydropower Station Underground cavern, consolidation grouting and backfill and fill with Grouting engineering; Also can be used for dam, side slope, the Grouting engineering such as soil layer when soft rock is reinforced.
Accompanying drawing explanation
Fig. 1 is a kind of grouting machine front view with whitewashing mechanism in the present invention;
Mark in figure: 1-single-screw (single screw) pump, 2-frame, 3-rabbling mechanism, 4-electric control box.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Specific embodiment 1:
As shown in Figure 1:
The invention discloses a kind of grouting machine with band spraying mechanism, comprise and be fixed on single-screw (single screw) pump in frame 21 and rabbling mechanism 3, hopper is provided with below rabbling mechanism 3, this hopper bottom is connected with single-screw (single screw) pump 1, and single-screw (single screw) pump 1 is positioned at the below of stirring structure, rabbling mechanism 3 is relative to the unsettled setting of hopper.Frame 2 is also provided with electric control box 4, frame 2 has roller, be provided with generator in the middle part of frame 2, electric control box 4 is electrically connected with the motor of rabbling mechanism 3 and single-screw (single screw) pump 1 respectively.Electric control box 4 for comprising control circuit, by the overall work of control circuit controlled grouting machine and stirring, conveying, whitewashing flow process.The delivery outlet of single-screw (single screw) pump connects whitewashing mechanism, and this whitewashing mechanism comprises air compressor machine, spray head, accelerating admixture conveyer, and pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with electric control box by wire with accelerating admixture conveyer.
It is anterior that single-screw (single screw) pump 1 is fixed on frame 2, comprise connect in turn casting head, plenum, feeding portion, slip casting motor, described feeding portion to be positioned at below rabbling mechanism 3 and to connect hopper.Casting head, plenum, feeding portion, slip casting motor join end to end successively.Casting head comprises the slip casting chamber of bucket type, and the exit of casting head is provided with pressure meter, for measuring grouting pressure.Plenum comprises stator and is located at the rotor in stator, and feeding portion comprises feeding chamber and screw rod, and screw rod is connected with rotor, and stator is connected with feeding chamber, and screw rod is away from the rotating shaft of one end connection slip casting motor of rotor, and feeding connects hopper on the upside of chamber.
Rabbling mechanism 3 comprises the agitator tank of upper opening, accumbency is arranged at the shaft in the middle part of agitator tank, the stirring vane be connected on shaft, be connected to the stirring motor of shaft end.The power of stirring motor is 2.2-5.5kw.Stirring motor is positioned at outside agitator tank
The bottom of rabbling mechanism 3 is provided with discharging opening, and this discharging opening is relative with hopper, and discharging opening aims at the charging aperture of hopper, and discharging opening is provided with discharge valve; The top of mixing plant is provided with water inlet, and water inlet is provided with inlet valve.In the hopper that the thick slurry of the concrete made in mixer enters below it through discharging opening, water inlet is used for water filling in agitator tank.
Said structure can isolate agitating function and conveying function, while carrying the thick slurry of concrete configured, can carry out the preparation of the thick slurry of concrete of a new round.Make the work of two parts functional independence and cooperatively interact, alleviating the dependence between the device realizing two functions, alleviate the pressure of work simultaneously and change the technological process of equipment, realizing the raising of grouting efficiency.
Specific embodiment 2:
Based on the control system of the grouting machine of above-mentioned band band spraying mechanism, comprising:
Sampled measurements unit, be located at rabbling mechanism 3 inner, comprise sampler and measuring instrument, sampler is the container with opening, and measuring instrument is placed in sampler, for sampling the thick slurry of the concrete in rabbling mechanism 3;
Agitating unit, comprises rabbling mechanism 3, and rabbling mechanism 3 comprises the agitator tank of upper opening, accumbency is arranged at the shaft in the middle part of agitator tank, the stirring vane be connected on shaft, be connected to the stirring motor of shaft end; For to the mixture of mixed territory and water being stirred to suitable denseness in rabbling mechanism 3, reach the water/binder ratio W/C of setting;
Supply unit, comprises single-screw (single screw) pump 1, and single-screw (single screw) pump 1 comprises casting head, plenum, feeding portion, slip casting motor, feeding portion is connected with hopper, plenum comprises stator and is located at the rotor in stator, and feeding portion comprises feeding chamber and is placed in the screw rod in feeding chamber, and screw rod is connected with rotor; Supply unit is used for the thick slurry of concrete reaching setting water/binder ratio W/C to be carried with certain pressure grouting by single-screw (single screw) pump 1;
Water injection unit, comprises water injection pipe, Water filling valve, and water injection pipe is connected on rabbling mechanism 3, and Water filling valve controls the water yield and injects;
Grouting measuring unit, be located at the exit of casting head, comprise pressure sensor, measure casting head exit grouting pressure and by this Signal transmissions to control unit;
Whitewashing unit, comprise air compressor machine, spray head, accelerating admixture conveyer, pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with control unit by wire with accelerating admixture conveyer;
Control unit, for controlling cooperatively interacting of above-mentioned modules, completes the action of stirring, sampling, conveying, water filling, whitewashing;
Power supply unit, comprises generator, stabilizator, voltage input, voltage output, for powering for above-mentioned unit.
Above-mentioned control system is automatic control system, separate and cooperating between unit, the institutional operation of thick slurry preparation, conveying, sprinkling can be realized efficiently, gather multi-function in integral whole, number of devices and the manpower and materials occupancy volume of above-mentioned work are reduced, save 20% of manufacture cost, effectively realize energy-saving and cost-reducing.
Specific embodiment 3:
Based on the concrete spraying method of the control system of embodiment 2
(1), the thick slurry of concrete after single-screw (single screw) pump 1 exports, control unit controls air compressor machine from spray head air-out, and boost gradually, its wind pressure of work is (0.3-0.6) Mpa, blast consumption is more than or equal to 3.0 cubic meters per minute;
(2), the thick slurry of concrete, and to spray out after mixing with the wind that air compressor machine extracts from Grouting Pipe with the speed pulp of (50-85) L/min;
(3), control unit controls accelerating admixture conveying device from spray head conveying accelerating admixture, and thick slurry of accelerating admixture and concrete is mixed.
(4), at spray head place, control unit controls slurry-outlet quantity: accelerating admixture conveying capacity: blast consumption=(50-85): (1-1.2): (3000-4000).
Above-mentioned gunnite method, well can arrange in pairs or groups accelerating admixture, blast consumption, slurry-outlet quantity, realizes three and coordinates, make after being sprayed onto metope rapid hardening speed improve, the qualification rate in concrete spraying face can be improved, effectively improve concrete utilization rate 10%-15%.Avoid wind-force excessive, or accelerating admixture ratio is inadequate, and concrete is dispersed too much, affects operating efficiency and spray qualification rate.Increase work efficiency and reduce manpower and materials occupancy, cost of labor and time cost are saved, solve the strict demand to mortar water/binder ratio and grouting pressure in engineering, like a cork the mortar in water/binder ratio scope of design can be poured into, and reach design pressure.The configurable ejector of this pump simultaneously, and spray can be carried out to tunnel metope and protect construction.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the grouting machine with whitewashing mechanism, it is characterized in that, comprise the single-screw (single screw) pump be fixed in frame, rabbling mechanism and electric control box, described frame has roller, described slip casting motor and stirring motor are connected on electric control box, hopper is provided with below rabbling mechanism, this hopper bottom is connected to single-screw (single screw) pump, the delivery outlet of single-screw (single screw) pump connects whitewashing mechanism, this whitewashing mechanism comprises air compressor machine, spray head, accelerating admixture conveyer, pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with electric control box by wire with accelerating admixture conveyer.
2. the grouting machine of band whitewashing mechanism according to claim 1, it is characterized in that, the bottom of described rabbling mechanism is provided with discharging opening, and described discharge outlet is provided with discharge valve, and this discharging opening aims at the charging aperture of hopper; The top of rabbling mechanism is provided with water inlet, and water inlet is provided with inlet valve.
3. the grouting machine of band whitewashing mechanism according to claim 2, it is characterized in that, described rabbling mechanism comprises the agitator tank of upper opening, accumbency is arranged at shaft in the middle part of agitator tank, be connected to the stirring vane on shaft and be connected to the stirring motor of shaft end, and described stirring motor is positioned at outside agitator tank.
4. the grouting machine of band whitewashing mechanism according to claim 3, it is characterized in that, described single-screw (single screw) pump is fixed on frame front, described single-screw (single screw) pump comprise connect in turn casting head, plenum, feeding portion and slip casting motor, described feeding portion to be positioned at below rabbling mechanism and to connect hopper.
5., according to the grouting machine of the band whitewashing mechanism of one of Claims 1-4, it is characterized in that, be also provided with control system, this control system comprises:
Sampled measurements unit, is located at rabbling mechanism inside, comprises sampler and measuring instrument, and sampler is the container with opening, and measuring instrument is placed in sampler, for sampling the thick slurry of the concrete in rabbling mechanism;
Agitating unit, comprises rabbling mechanism, and rabbling mechanism comprises the agitator tank of upper opening, accumbency is arranged at the shaft in the middle part of agitator tank, the stirring vane be connected on shaft, be connected to the stirring motor of shaft end; For to the mixture of mixed territory and water being stirred to suitable denseness in rabbling mechanism, reach the water/binder ratio W/C of setting;
Supply unit, comprises single-screw (single screw) pump, and single-screw (single screw) pump comprises casting head, plenum, feeding portion, slip casting motor, feeding portion is connected with hopper, plenum comprises stator and is located at the rotor in stator, and feeding portion comprises feeding chamber and is placed in the screw rod in feeding chamber, and screw rod is connected with rotor; Supply unit is used for the thick slurry of concrete reaching setting water/binder ratio W/C to be carried with certain pressure grouting by single-screw (single screw) pump;
Water injection unit, comprises water injection pipe, Water filling valve, and water injection pipe is connected on rabbling mechanism, and Water filling valve controls the water yield and injects;
Grouting measuring unit, be located at the exit of casting head, comprise pressure sensor, measure casting head exit grouting pressure and by this Signal transmissions to control unit;
Whitewashing unit, comprise air compressor machine, spray head, accelerating admixture conveyer, pneumatics device is connected with spray head respectively with accelerating admixture conveyer, and pneumatics device is connected with control unit by wire with accelerating admixture conveyer;
Control unit, for controlling cooperatively interacting of above-mentioned modules, completes the action of stirring, sampling, conveying, water filling, whitewashing;
Power supply unit, comprises generator, stabilizator, voltage input, voltage output, for powering for above-mentioned unit.
6. the grouting machine of band whitewashing mechanism according to claim 5, is characterized in that, the concrete spraying method of this control system:
(1), the thick slurry of concrete after single-screw (single screw) pump exports, control unit controls air compressor machine from spray head air-out, and boost gradually, its wind pressure of work is (0.3-0.6) Mpa, blast consumption is more than or equal to 3.0 cubic meters per minute;
(2), the thick slurry of concrete, and to spray out after mixing with the wind that air compressor machine extracts from Grouting Pipe with the speed pulp of (50-85) L/min;
(3), control unit controls accelerating admixture conveying device from spray head conveying accelerating admixture, and thick slurry of accelerating admixture and concrete is mixed;
At spray head place, control unit controls slurry-outlet quantity: accelerating admixture conveying capacity: blast consumption=(50-85): (1-1.2): (3000-4000).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| 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 CN105298131B (en) | 2015-09-14 | 2015-09-14 | A kind of grouter and concrete spraying method of band whitewashing mechanism |
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| CN105298131B CN105298131B (en) | 2017-12-19 |
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| CN201510578494.6A Active CN105298131B (en) | 2015-09-14 | 2015-09-14 | A kind of grouter and concrete spraying method of band whitewashing mechanism |
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| CN107876238A (en) * | 2017-11-17 | 2018-04-06 | 徐州华显凯星信息科技有限公司 | 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 |
| CN112875190A (en) * | 2021-01-26 | 2021-06-01 | 欧金玉 | Concrete mortar transportation device and transportation method thereof |
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| CN113356894B (en) * | 2021-07-23 | 2022-10-25 | 山东东山新驿煤矿有限公司 | Remote electric control guniting pressurization system |
| 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 |
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| JPH08338198A (en) * | 1995-04-10 | 1996-12-24 | Konoike Constr Ltd | Tunnel excavating and lining device and tunnel internal surface concrete lining method |
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| CN112282790A (en) * | 2020-09-16 | 2021-01-29 | 贵州大学 | Slurry stirring self-injection equipment |
| CN112875190A (en) * | 2021-01-26 | 2021-06-01 | 欧金玉 | Concrete mortar transportation device and transportation method thereof |
Also Published As
| Publication number | Publication date |
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| CN107605158A (en) | 2018-01-19 |
| CN105298131B (en) | 2017-12-19 |
| CN107605158B (en) | 2019-07-16 |
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