CN112160599A - A maintenance of equipment for concrete placement - Google Patents
A maintenance of equipment for concrete placement Download PDFInfo
- Publication number
- CN112160599A CN112160599A CN202011107615.6A CN202011107615A CN112160599A CN 112160599 A CN112160599 A CN 112160599A CN 202011107615 A CN202011107615 A CN 202011107615A CN 112160599 A CN112160599 A CN 112160599A
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- fixedly connected
- bottom plate
- bearing sleeve
- rods
- belt wheel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of building equipment, in particular to maintenance equipment for concrete pouring, which comprises a cart mechanism and a film covering mechanism, wherein the top end of a vertical rod in two L-shaped rods is rotatably connected with a roller II, one end of a horizontal rod in the two L-shaped rods is rotatably connected with a roller I, the top ends of two bearing seat rods are respectively rotatably connected with a bearing sleeve I and a bearing sleeve II, the outer side wall of each bearing sleeve is rotatably connected with a belt wheel I, the belt wheel I is connected with a belt wheel II through belt transmission, a water tank is fixedly connected with the surface of a bottom plate, a water suction pump is fixedly connected in the water tank, a plurality of spray heads are fixed on the adjacent side wall of the water tank and the film covering mechanism, the cart mechanism walks to unwind a transparent film through the belt wheel and the belt wheel II through belt transmission, film covering is synchronously performed on the ground surface in the walking process, and when the transparent film is contacted with the concrete floor, the curing water is synchronously sprinkled to cure the floor.
Description
Technical Field
The invention relates to the technical field of building equipment, in particular to maintenance equipment for concrete pouring.
Background
Concrete curing is to artificially create certain humidity and temperature conditions to enable the concrete just poured to be normal or accelerate the hardening and strength increase of the concrete, the concrete can be gradually hardened and strength increased, the concrete is the result of cement hydration, the cement hydration needs certain temperature and humidity conditions, and if the ambient environment does not have the conditions, the concrete needs to be manually cured.
The traditional concrete curing method is to spray water and coat the concrete with a film for curing, is suitable for large-area concrete structures, sprays water on the surface of the concrete with a spray gun, covers a layer of film to isolate the concrete from air, prevents water in the concrete from evaporating to ensure that the hydration action of the cement is normally carried out, has troublesome operation, occupies too much labor, wastes time and labor, and has dry concrete when the film is covered after water is sprinkled, so that the maintenance equipment for concrete pouring is necessary to be invented, integrates watering and coating, and saves manpower and material resources.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide maintenance equipment for concrete pouring, which is characterized in that two L-shaped rods with the same specification and two bearing seat rods with the same specification are fixedly connected to one ends, close to power wheels, of two long side walls of a bottom plate, the L-shaped rods are composed of a vertical rod and a horizontal rod, the top ends of the vertical rods in the two L-shaped rods are rotatably connected with a second roller, one end of the horizontal rod in the two L-shaped rods is rotatably connected with a first roller, the two bearing seat rods are fixedly connected to the middle parts of the two long side walls of the bottom plate, the top ends of the two bearing seat rods are respectively rotatably connected with a first bearing sleeve and a second bearing sleeve, a transparent film is rotatably sleeved between the inner walls of the first bearing sleeve and the second bearing sleeve, the outer side walls of the bearing sleeves are rotatably connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through belt transmission, shallow mechanism walking is untied the winding with the transparent film through band pulley drive connection band pulley two, the realization is walked the in-process and is realized carrying out the tectorial membrane to the concrete ground in step, be connected with the water tank through bottom plate fixed surface, and fixedly connected with suction pump in the water tank, and the adjacent lateral wall of water tank and tectorial membrane mechanism is fixed with a plurality of shower nozzles, and the output of suction pump leads to pipe and a plurality of shower nozzle intercommunication, at the tectorial membrane in-process to spilling water between concrete and the transparent film, increase the adhesive force between transparent film and the concrete, just synchronous the maintenance water of spilling when transparent film and concrete ground contact advances the maintenance.
The purpose of the invention can be realized by the following technical scheme:
a maintenance device for concrete pouring comprises a cart mechanism, wherein the cart mechanism comprises a bottom plate, a handrail is fixedly connected to the side wall of one short side of the bottom plate, universal wheels are fixedly connected to two corners of the bottom plate on the same side with the handrail, a motor and a reduction gearbox are fixedly connected to one end, away from the bottom surface of the handrail, of the bottom plate, an output shaft of the motor is in transmission connection with an output shaft of the reduction gearbox, power wheels are in transmission connection with two ends of the output shaft of the reduction gearbox, a film covering mechanism is fixedly connected to the bottom plate, and the device is electrically controlled to walk through the cart mechanism, so that labor is saved;
the film covering mechanism comprises two L-shaped rods with the same specification and two bearing seat rods with the same specification, the two L-shaped rods are fixedly connected with one ends of the two long side walls of the bottom plate, which are close to the power wheel, the L-shaped rods are composed of a vertical rod and a transverse rod, the top ends of the vertical rods in the two L-shaped rods are rotatably connected with a roller II, one end of the transverse rod in the two L-shaped rods is rotatably connected with a roller I, the two bearing seat rods are fixedly connected to the middle parts of the two long side walls of the bottom plate, the top ends of the two bearing seat rods are respectively rotatably connected with a bearing sleeve I and a bearing sleeve II, a transparent film is rotatably sleeved between the inner walls of the first bearing sleeve and the second bearing sleeve, the outer side wall of the bearing sleeve is rotatably connected with a first belt wheel, the first belt wheel is connected with a second belt wheel through a belt in a transmission mode, the second belt wheel is fixedly sleeved on an output shaft in a corresponding position in the reduction gearbox, and the pushing mechanism walks to be connected with the second belt wheel through the belt in the transmission mode to unwind and wind the transparent film.
Further, the method comprises the following steps: the bottom plate surface fixedly connected with water tank between tectorial membrane mechanism and handrail, fixedly connected with suction pump in the water tank, and the adjacent lateral wall of water tank and tectorial membrane mechanism is fixed with a plurality of shower nozzles, and the output of suction pump leads to pipe and a plurality of shower nozzles intercommunication, spills water between tectorial membrane in-process to concrete and transparent film, increases the adhesive force between transparent film and the concrete.
Further, the method comprises the following steps: the power wheel includes the connecting rod with reducing gear box outer wall fixed connection, the connecting rod deviates from the output shaft that one side internal rotation of universal wheel was connected with the reducing gear box, and the output shaft and the first fixed connection of gear of reducing gear box, the fixed surface that the connecting rod kept away from gear one has the round bar, and the round bar outside rotates and has cup jointed gear two, gear one and gear two pass through rubber track transmission and connect, and the concrete bottom surface is more than in smooth road surface, conveniently to the concrete road surface increase frictional force that has the upslope, and the rubber track reduces the contact pressure with the concrete road surface, reduces the bottom surface unnecessary destruction.
Further, the method comprises the following steps: the connecting rod lateral wall center has seted up the notch to round bar position department, the inside of notch is fixed with the slider, and round bar and slider fixed connection, be provided with the spring of connecting notch inner wall and slider in the notch, the spring can adjust the distance between gear one and the gear two to also adjusted the elasticity degree of rubber track, conveniently adjusted or changed rubber track.
Further, the method comprises the following steps: the length of the first roller and the second roller is larger than that of the transparent film, so that the transparent film can be completely unfolded when rolling on the first roller and the second roller.
Further, the method comprises the following steps: the diameter of the profile of one side wall of the gear is the same as the diameter of a reel of the transparent film, the walking distance of the equipment is the same as the film discharging distance of the transparent film, and the film discharging is not enough or too much, so that the process is not influenced.
Further, the method comprises the following steps: the height from the bottom surface of the rubber track to the bottom surface of the bottom plate is the same as the height from the bottom surface of the universal wheel to the bottom surface of the bottom plate, so that the cart mechanism can be kept parallel to the bottom surface all the time and cannot be inclined.
The invention has the beneficial effects that:
1. two L-shaped rods with the same specification and two bearing seat rods with the same specification are fixedly connected to one end, close to a power wheel, of the two long side walls of a bottom plate, the L-shaped rods are composed of a vertical rod and a horizontal rod, the top ends of the vertical rods in the two L-shaped rods are rotatably connected with a roller II, one end of the horizontal rod in the two L-shaped rods is rotatably connected with a roller I, the two bearing seat rods are fixedly connected to the middle parts of the two long side walls of the bottom plate, the top ends of the two bearing seat rods are respectively rotatably connected with a bearing sleeve I and a bearing sleeve II, a transparent film is rotatably sleeved between the inner walls of the bearing sleeve I and the bearing sleeve II, the outer side walls of the bearing sleeve are rotatably connected with a belt wheel I, the belt wheel I is connected with a belt wheel II through belt transmission, the belt wheel II is fixedly sleeved on an output shaft at a corresponding position in a speed, the coating of the concrete floor is synchronously realized in the walking process;
2. through bottom plate fixed surface's water tank, and fixedly connected with suction pump in the water tank, and the adjacent lateral wall of water tank and tectorial membrane mechanism is fixed with a plurality of shower nozzles, and the output of suction pump leads to pipe and a plurality of shower nozzles intercommunication, spills the water between at the tectorial membrane in-process to concrete and transparent membrane, increases the adhesive force between transparent membrane and the concrete, just spills maintenance water in step when transparent membrane and concrete ground contact and advances the maintenance to ground.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a car pusher mechanism according to the present invention;
FIG. 3 is a schematic view of a power wheel according to the present invention;
FIG. 4 is a schematic view of the power wheel structure of the present invention;
FIG. 5 is a schematic view of the structure of the film-coating mechanism of the present invention;
fig. 6 is a side view of the overall structure of the present invention.
In the figure: 100. a cart mechanism; 110. a base plate; 120. a handrail; 130. a universal wheel; 140. a motor; 150. a reduction gearbox; 160. a power wheel; 1601. a first gear; 1602. a rubber track; 1603. a connecting rod; 1604. a notch; 1605. a spring; 1606. a second gear; 200. a film covering mechanism; 210. an L-shaped rod; 220. a first roller; 230. a second roller; 240. a bearing seat post; 250. a first bearing sleeve; 260. a second bearing sleeve; 270. a first belt wheel; 280. a second belt wheel; 300. a water tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a maintenance device for concrete pouring comprises a cart mechanism 100, the cart mechanism 100 comprises a bottom plate 110, a handrail 120 is fixedly connected to a short side wall of the bottom plate 110, universal wheels 130 are fixedly connected to two corners of the bottom plate 110 on the same side as the handrail 120, a motor 140 and a reduction gearbox 150 are fixedly connected to one end of the bottom surface of the bottom plate 110, which is far away from the handrail 120, an output shaft of the motor 140 is in transmission connection with an output shaft of the reduction gearbox 150, power wheels 160 are in transmission connection with two ends of the output shaft of the reduction gearbox 150, a film covering mechanism 200 is fixedly connected to the bottom plate 110, and the cart mechanism 100 is used for electrically controlling the device;
the film laminating mechanism 200 comprises two L-shaped rods 210 with the same specification and two bearing seat rods 240 with the same specification, the two L-shaped rods 210 are fixedly connected to one ends, close to the power wheel 160, of two long side walls of the bottom plate 110, the L-shaped rods 210 are composed of a vertical rod and a horizontal rod, the top ends of the vertical rods in the two L-shaped rods 210 are rotatably connected with a roller II 230, one end of the horizontal rod in the two L-shaped rods 210 is rotatably connected with a roller I220, the two bearing seat rods 240 are fixedly connected to the middle portions of the two long side walls of the bottom plate 110, the top ends of the two bearing seat rods 240 are respectively rotatably connected with a bearing sleeve I250 and a bearing sleeve II 260, a transparent film is rotatably sleeved between the bearing sleeve I250 and the inner wall of the bearing sleeve II 260, the outer side wall of the bearing sleeve II 260 is rotatably connected with a belt wheel I270, the belt I270 is connected with a belt wheel II 280 through belt transmission, the belt II 280 is fixedly sleeved.
The water tank 300 is fixedly connected to the surface of the base plate 110 between the film covering mechanism 200 and the handrail 120, the water pump is fixedly connected to the interior of the water tank 300, a plurality of spray heads are fixed to the adjacent side walls of the water tank 300 and the film covering mechanism 200, the output end of the water pump is communicated with the spray heads through water pipes, water is sprayed between concrete and the transparent film in the film covering process, and the adhesive force between the transparent film and the concrete is increased.
The power wheel 160 includes the connecting rod 1603 with reducing gear box 150 outer wall fixed connection, one side internal rotation that connecting rod 1603 deviates from universal wheel 130 is connected with the output shaft of reducing gear box 150, and reducing gear box 150's output shaft and gear 1601 fixed connection, the fixed surface that gear 1601 was kept away from to connecting rod 1603 has the round bar, and the round bar outside is rotated and is cup jointed gear two 1606, gear one 1601 and gear two 1606 are connected through rubber track 1602 transmission, the concrete bottom surface is more than in smooth road surface, conveniently to the concrete road surface increase frictional force that has the upslope, rubber track 1602 reduces the contact pressure with the concrete road surface, reduce the unnecessary destruction to the bottom surface.
Notch 1604 has been seted up to connecting rod 1603 lateral wall center to round bar position department, and the inside of notch 1604 is fixed with the slider, and round bar and slider fixed connection are provided with the spring 1605 of connecting notch 1604 inner wall and slider in the notch 1604, and the spring 1605 can adjust the distance between gear 1601 and two 1606 of gear to the elasticity degree of rubber track 1602 has also been adjusted, convenient regulation or change rubber track 1602.
The length of the first roller 220 and the second roller 230 is greater than that of the transparent film, so that the transparent film can be completely unfolded when rolling on the first roller 220 and the second roller 230.
The diameter of the side wall profile of the first gear 1601 is the same as the diameter of a reel of the transparent film, and the walking distance of the equipment is the same as the film discharging distance of the transparent film, so that the film discharging is not enough or the film discharging is not too much, and the process is not influenced.
The height of the bottom surface of the rubber track 1602 from the bottom surface of the bottom plate 110 is the same as the height of the bottom surface of the universal wheel 130 from the bottom surface of the bottom plate 110, so that the cart mechanism 100 can be always kept parallel to the bottom surface and cannot be inclined.
The working principle is as follows: when the water tank 300 is used, water is filled in the water tank 300, the transparent film is placed on the inner wall between the first bearing sleeve 250 and the second bearing sleeve 260 and is tightly held and fixed through screws, the transparent film is manually rolled out from the lower side and enters the lower side of the first roller 220 to be wound and spread, one end of the rolled film is placed on the bottom surface and is manually held and fixed or pressed by a heavy object, the cart mechanism 100 and a water pump power supply are started, the power wheel 160 rotates and is connected with the second roller 280 through the belt transmission through the first belt wheel 270, the first bearing sleeve 250 and the second bearing sleeve 260 are driven to rotate when the cart mechanism 100 walks, the transparent film is automatically rolled out from the reel due to the tensile force generated by fixing one end of the transparent film, the manual hand-held handrail 120 controls the direction of the cart mechanism 100, the transparent film is cut off after the manual hand-held handrail 120 finishes, and all power.
Reference throughout this specification to the description of "one embodiment," "an example," "a specific example," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention, and no requirement exists that the term be interpreted as illustrative of the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (7)
1. The maintenance equipment for concrete pouring comprises a trolley mechanism (100) and is characterized in that the trolley mechanism (100) comprises a bottom plate (110), a handrail (120) is fixedly connected to one short side wall of the bottom plate (110), two corners of the bottom plate (110) on the same side as the handrail (120) are fixedly connected with universal wheels (130), one end, away from the handrail (120), of the bottom surface of the bottom plate (110) is fixedly connected with a motor (140) and a reduction gearbox (150), an output shaft of the motor (140) is in transmission connection with an output shaft of the reduction gearbox (150), two ends of the output shaft of the reduction gearbox (150) are in transmission connection with power wheels (160), and a film covering mechanism (200) is fixedly connected to the bottom plate (110);
the laminating mechanism (200) comprises two L-shaped rods (210) with the same specification and two bearing seat rods (240) with the same specification, the two L-shaped rods (210) are fixedly connected to one ends, close to the power wheels (160), of two long side walls of the bottom plate (110), the L-shaped rods (210) are composed of a vertical rod and a horizontal rod, the top ends of the vertical rods in the two L-shaped rods (210) are rotatably connected with a second roller (230), one end of the horizontal rod in the two L-shaped rods (210) is rotatably connected with a first roller (220), the two bearing seat rods (240) are fixedly connected to the middle parts of the two long side walls of the bottom plate (110), the top ends of the two bearing seat rods (240) are respectively rotatably connected with a first bearing sleeve (250) and a second bearing sleeve (260), a transparent film is rotatably sleeved between the inner walls of the first bearing sleeve (250) and the second bearing sleeve (260), the outer side wall of the second bearing sleeve (260) is, the first belt wheel (270) is connected with a second belt wheel (280) through a belt in a transmission mode, and the second belt wheel (280) is fixedly sleeved on an output shaft in the reduction gearbox (150) at a corresponding position.
2. The curing apparatus for concrete pouring according to claim 1, wherein a water tank (300) is fixedly connected to the surface of the bottom plate (110) between the film coating mechanism (200) and the handrail (120), a water suction pump is fixedly connected to the inside of the water tank (300), a plurality of nozzles are fixed to the side wall of the water tank (300) adjacent to the film coating mechanism (200), and the output end of the water suction pump is communicated with the plurality of nozzles through a water pipe.
3. The maintenance equipment for concrete pouring of claim 1, characterized in that the power wheel (160) comprises a connecting rod (1603) fixedly connected with the outer wall of the reduction gearbox (150), the output shaft of the reduction gearbox (150) is connected to the inner portion of one side, facing away from the universal wheel (130), of the connecting rod (1603) in a rotating mode, the output shaft of the reduction gearbox (150) is fixedly connected with the first gear (1601), a round rod is fixed to the surface, away from the first gear (1601), of the connecting rod (1603), a second gear (1606) is sleeved to the outer portion of the round rod in a rotating mode, and the first gear (1601) and the second gear (1606) are in transmission connection through a rubber crawler (1602).
4. The curing equipment for concrete pouring according to claim 3, characterized in that a notch (1604) is formed from the center of the side wall of the connecting rod (1603) to the position of the round rod, a sliding block is fixed inside the notch (1604), the round rod is fixedly connected with the sliding block, and a spring (1605) for connecting the inner wall of the notch (1604) and the sliding block is arranged in the notch (1604).
5. A maintenance equipment for concrete pouring according to claim 1, wherein the length of said first roller (220) and said second roller (230) is greater than the length of the transparent film.
6. A maintenance equipment for concrete pouring according to claim 3, wherein said gear-one (1601) side wall profile diameter is the same as the reel diameter of the transparent film.
7. A maintenance equipment for concrete pouring according to claim 6, wherein the height of the bottom surface of the rubber crawler (1602) from the bottom surface of the base plate (110) is the same as the height of the bottom surface of the universal wheel (140) from the bottom surface of the base plate (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107615.6A CN112160599A (en) | 2020-10-16 | 2020-10-16 | A maintenance of equipment for concrete placement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011107615.6A CN112160599A (en) | 2020-10-16 | 2020-10-16 | A maintenance of equipment for concrete placement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112160599A true CN112160599A (en) | 2021-01-01 |
Family
ID=73867271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011107615.6A Pending CN112160599A (en) | 2020-10-16 | 2020-10-16 | A maintenance of equipment for concrete placement |
Country Status (1)
| Country | Link |
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| CN (1) | CN112160599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941275A (en) * | 2022-06-29 | 2022-08-26 | 浙江广川工程咨询有限公司 | Hydraulic engineering is curing means for construction concrete |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9819270D0 (en) * | 1997-10-24 | 1998-10-28 | Caterpillar Inc | Track belt tension management system |
| CN110171497A (en) * | 2019-06-22 | 2019-08-27 | 北京博清科技有限公司 | Track assembly and caterpillar type robot |
| CN110670890A (en) * | 2019-09-16 | 2020-01-10 | 王泽滨 | Concrete floor laminating machine for building |
| CN111734153A (en) * | 2020-07-02 | 2020-10-02 | 温州品力智能幕墙门窗有限公司 | Film laminating machine for concrete pouring and using method thereof |
| CN110080544B (en) * | 2019-05-07 | 2021-05-25 | 河北建设集团股份有限公司 | Concrete maintenance tectorial membrane device for construction |
-
2020
- 2020-10-16 CN CN202011107615.6A patent/CN112160599A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9819270D0 (en) * | 1997-10-24 | 1998-10-28 | Caterpillar Inc | Track belt tension management system |
| CN110080544B (en) * | 2019-05-07 | 2021-05-25 | 河北建设集团股份有限公司 | Concrete maintenance tectorial membrane device for construction |
| CN110171497A (en) * | 2019-06-22 | 2019-08-27 | 北京博清科技有限公司 | Track assembly and caterpillar type robot |
| CN110670890A (en) * | 2019-09-16 | 2020-01-10 | 王泽滨 | Concrete floor laminating machine for building |
| CN111734153A (en) * | 2020-07-02 | 2020-10-02 | 温州品力智能幕墙门窗有限公司 | Film laminating machine for concrete pouring and using method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941275A (en) * | 2022-06-29 | 2022-08-26 | 浙江广川工程咨询有限公司 | Hydraulic engineering is curing means for construction concrete |
| CN114941275B (en) * | 2022-06-29 | 2022-11-18 | 浙江广川工程咨询有限公司 | Hydraulic engineering is curing means for construction concrete |
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Application publication date: 20210101 |