Small component prefabrication construction method of movable double hoppers and vibrating table

Abstract

The invention discloses a small component prefabrication construction method of a movable double hopper and a vibration table, and belongs to the technical field of small component prefabrication construction, which comprises the following steps: construction preparation: leveling and hardening a prefabrication site, and dividing into a preparation area, a prefabrication area and a finished product maintenance area, conveying a movable vibration table and a movable double-hopper to the prefabricating area, and checking the state of the movable vibration table and the movable double-hopper; and mold placement and parameter setting: after a plastic mold is checked and coated with a release agent, the plastic mold is placed on a working table top of the movable vibration table, and the concrete type and strength requirements of a to-be-prefabricated part are met. By means of the integrated construction mode of the movable vibration table and the movable double hoppers, flexible connection of discharging, vibration and carrying procedures in the small component prefabricating process is achieved, the carrying distance between a mold and an undemolded component in a preparation area, a prefabricating area and a curing area is remarkably reduced, the construction efficiency is improved, and the construction cost is reduced. And the manual carrying cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of prefabrication construction technology for small components, and more specifically, to a method for prefabrication construction of small components using a mobile double hopper and a vibration table. Background Technology

[0002] With the rapid development of infrastructure construction and the continuous deepening of urbanization in my country, various small precast concrete components, such as sidewalk paving stones, curb stones, cable trench covers, ecological slope protection blocks, and highway warning posts, are increasingly widely used in municipal engineering, transportation construction, and landscaping. These components are characterized by diverse specifications, large demand, and high quality requirements. The efficiency and quality of their precast production directly affect the construction cost, schedule, and final quality of the project. Currently, the traditional precast construction method commonly used in the industry typically involves setting up a fixed vibrating table at a fixed site. Concrete mixture is transported to the vibrating table using wheelbarrows or hoppers, and then manually shoveled or poured into molds placed on the vibrating table. The vibrating table is then turned on for compaction. After compaction, the components with molds are manually moved to a designated curing area for static curing until the strength meets the standards before demolding and stacking. This method was sufficient to meet basic needs in the past for small-batch, single-unit production.

[0003] However, with the expansion of engineering construction scale, the increase in environmental protection requirements, and the increase in the types of components, the existing traditional prefabrication methods still have the following defects: First, the production process is rigid. Fixed equipment results in long and frequent handling paths for molds and concrete, which not only leads to high labor intensity and manpower requirements but also low production efficiency, making it difficult to adapt to the needs of large-scale, streamlined production. Second, vibration parameters are often fixed or have a limited adjustment range, making it impossible to optimize them according to the concrete mix ratio (such as high-strength concrete and ordinary concrete) and aggregate characteristics of different components. This can easily lead to insufficient or excessive vibration, causing voids inside the components. The traditional precast methods suffer from several problems: surface bubbles, aggregate segregation, and other quality issues. Furthermore, quality control relies heavily on the experience of operators, lacking precise and systematic control over key parameters such as mold dimensions, concrete slump, and vibration time, resulting in significant fluctuations in product quality. Additionally, these methods are poorly adaptable to different construction environments, especially in low-temperature winter conditions, where the lack of effective process connections and insulation measures can easily lead to concrete freezing or slow strength development. Finally, most on-site precast construction neglects environmental protection; concrete spills and oil leaks can pollute the soil, and wastewater from washing processes is discharged indiscriminately, failing to meet current requirements for green construction and sustainable development.

[0004] Based on this, the present invention designs a method for prefabricating small components using a mobile double hopper and a vibration table to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a method for prefabricating small components using a mobile double hopper and a vibration table, in order to solve the problems mentioned in the background art.

[0006] A method for prefabricating small components using a mobile double hopper and a vibrating table, comprising the following steps: S1. Construction preparation: The prefabrication site is leveled and hardened, and a preparation area, a prefabrication area and a finished product curing area are divided. The mobile vibrating table and the mobile double hopper are transported to the prefabrication area and their condition is checked. S2. Mold Placement and Parameter Setting: After inspecting the plastic mold and applying a release agent, place it on the worktable of the mobile vibration table. According to the type of concrete and strength requirements of the precast component, set the vibration frequency and amplitude on the mobile vibration table. The vibration frequency range is 30-50Hz, and the amplitude range is 0.5-1.0mm. S3. Concrete feeding and vibration compaction: Load the qualified concrete mixture into the mobile double hopper, operate the opening and closing gate of the mobile double hopper for manual feeding, and inject the concrete into the plastic mold placed in step S2 in multiple times. Start the mobile vibration table to vibrate the concrete in the mold. The vibration time is controlled at 10-30 seconds until the concrete surface no longer sinks and no obvious air bubbles overflow. S4. Component handling and curing: After vibration, the component with mold is removed from the mobile vibration table and transported to the finished product curing area. When the strength of the concrete test block cured under the same conditions reaches more than 21MPa, it is demolded. The demolded component is stacked according to the preset plan and covered for moisture curing.

[0007] Preferably, in step S1, the mobile vibrating table and the mobile double hopper are moved by welding and installing foot pulleys at their bottoms. In step S3, when concrete is being poured, the opening and closing gates of the mobile double hopper are controlled to ensure that the concrete is evenly distributed throughout the entire plastic mold and that the thickness of the component meets the requirements.

[0008] Preferably, during the vibration compaction process in step S3, the vibration parameters are adjusted according to the mix proportion characteristics of the concrete. High-frequency vibration is used to promote the distribution of fine aggregates, low-frequency vibration is used to promote the compaction of coarse aggregates, small amplitude is used to match high-strength concrete, and large amplitude is used to match ordinary concrete.

[0009] Preferably, when operating in the prefabrication area, the mobility of the mobile double hopper and the mobile vibrating table is utilized to place the plastic molds sequentially at the mobile vibrating table station in a row-by-row order from far to near, so as to reduce the transportation distance of the plastic molds and undemolded components between the preparation area, the prefabrication area and the finished product curing area.

[0010] Preferably, in step S2, before placing the plastic mold, the geometric dimensions of the plastic mold are checked, and plastic molds with a length deviation exceeding +5 to -10 mm or a width or thickness deviation exceeding ±5 mm are rejected. In step S3, before pouring concrete, the slump of the concrete mixture is tested to ensure that it meets the design requirement of 30-50 mm.

[0011] Preferably, the mobile vibration table is calibrated by a third-party organization every six months. The calibration parameters include vibration frequency and amplitude accuracy. Before each day's operation, the power line and grounding device of the mobile vibration table are checked to ensure that the grounding resistance is ≤4Ω.

[0012] Preferably, in step S3, after starting the mobile vibration table, the operator needs to continuously observe the state of the concrete surface. When the concrete surface no longer sinks and no obvious bubbles overflow, the vibration is stopped. The vibration time is strictly controlled between 10 and 30 seconds to prevent the concrete from being over-vibrated.

[0013] Preferably, in step S4, after the component is demolded, it is immediately transferred to the finished product curing area for heat preservation and moisture retention curing. Under the winter construction conditions where the average daily temperature outside is consistently below 5°C for 5 consecutive days, after the component is vibrated and compacted, the surface of the component is immediately covered with a double-layer insulation blanket, and the outside of the plastic mold is wrapped with insulation cotton, and then transferred to the finished product curing area for heat preservation and curing.

[0014] Preferably, the method also includes safety and environmental protection preparation steps before construction: setting up protective warning signs around the operating area of ​​the mobile vibration table to prohibit approaching during equipment operation; laying geotextile or steel plates on the ground of the prefabrication area to prevent oil and chemical pollution of the soil; and thoroughly cleaning and restoring the work site to its original state after construction is completed.

[0015] Compared with the prior art, the advantages of this invention are: 1. This invention achieves flexible connection between material feeding, vibration and handling processes in the prefabrication of small components by adopting an integrated construction method of mobile vibration table and mobile double hopper. It significantly reduces the handling distance between mold and undemolded components in the preparation area, prefabrication area and curing area, improves construction efficiency and reduces manual handling costs.

[0016] 2. This invention effectively improves the compaction quality of concrete by setting an adjustable vibration frequency (30-50Hz) and amplitude (0.5-1.0mm), and supports dynamic adjustment of vibration parameters according to different concrete types (such as high-frequency small amplitude for high-strength concrete and low-frequency large amplitude for ordinary concrete), avoiding aggregate segregation or over-vibration, and ensuring that the internal structure of the component is dense and the surface is flat.

[0017] 3. This invention sets strict mold size inspection standards and concrete slump control requirements (slump 30-50mm), and observes the concrete surface condition in real time during vibration, accurately controlling the vibration time within 10-30 seconds, thereby systematically ensuring the dimensional accuracy of components and the quality of concrete molding, and improving the product qualification rate.

[0018] 4. This invention enhances the safety and environmental adaptability of the construction process by introducing a periodic calibration mechanism for mobile equipment (calibrated by a third-party organization every six months) and daily safety inspections (grounding resistance ≤ 4Ω), combined with insulation covering measures during winter construction (double-layer insulation blanket + insulation cotton), ensuring stable production even under adverse conditions such as low temperatures.

[0019] 5. By planning clearly defined construction areas (preparation area, prefabrication area, finished product curing area) and implementing environmentally friendly construction measures (laying geotextile / steel plates, setting up sedimentation tanks, and recycling wastewater), this invention achieves streamlined and green prefabrication processes, reduces site pollution, and meets the environmental protection and sustainable development requirements of modern construction. Attached Figure Description

[0020] Figure 1 This is a construction flowchart of a method for prefabricating small components using a mobile double hopper and a vibration table, as proposed in this invention. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 A method for prefabricating small components using a mobile double hopper and a vibrating table, comprising the following steps: S1. Construction preparation: The prefabrication site is leveled and hardened, and a preparation area, a prefabrication area and a finished product curing area are divided. The mobile vibrating table and the mobile double hopper are transported to the prefabrication area and their condition is checked. The leveling and hardening of the precast site is achieved by using bulldozers or graders to initially level the site, then using road rollers or vibratory tampers to compact the surface, and finally laying a layer of C15 or higher strength concrete with a thickness of not less than 10cm and finishing the surface. The tools used mainly include bulldozers, graders, road rollers, vibratory tampers and concrete paving and leveling equipment. S2. Mold Placement and Parameter Setting: After inspecting the plastic mold and applying release agent, place it on the worktable of the mobile vibrating table. According to the type of concrete and strength requirements of the precast component, set the vibration frequency and amplitude on the mobile vibrating table. The vibration frequency range is 30-50Hz, and the amplitude range is 0.5-1.0mm. S3. Concrete feeding and vibration compaction: Load the qualified concrete mixture into the mobile double hopper, operate the opening and closing gate of the mobile double hopper for manual feeding, and inject the concrete into the plastic mold placed in step S2 in multiple times. Start the mobile vibration table to vibrate the concrete in the mold. The vibration time is controlled at 10-30 seconds until the concrete surface no longer sinks and no obvious air bubbles overflow. S4. Component handling and curing: After vibration, the components with molds are removed from the mobile vibration table and transported to the finished product curing area. When the concrete test blocks cured under the same conditions reach a strength of 21MPa or above, they are demolded. The demolded components are stacked according to the preset plan and covered for moisture curing.

[0023] In step S1, the mobile vibrating table and the mobile double hopper are moved by welding and installing foot pulleys on their bottoms. In step S3, when the concrete is poured, the opening and closing gate of the mobile double hopper is controlled to make the concrete evenly cover the entire plastic mold and make the thickness of the component meet the requirements.

[0024] During the vibration compaction process in step S3, the vibration parameters are adjusted according to the mix proportion characteristics of the concrete. High-frequency vibration is used to promote the distribution of fine aggregates, low-frequency vibration is used to promote the compaction of coarse aggregates, small amplitude is used to match high-strength concrete, and large amplitude is used to match ordinary concrete.

[0025] When working in the prefabrication area, the mobility of the mobile double hopper and the mobile vibrating table is utilized. The plastic molds are placed in the mobile vibrating table station in a row-by-row order from far to near, and the concrete is poured and vibrated to compact it. This reduces the transportation distance of the plastic molds and undemolded components between the preparation area, the prefabrication area and the finished product curing area.

[0026] In step S2, before placing the plastic mold, the geometric dimensions of the plastic mold are checked, and plastic molds with a length deviation exceeding +5 to -10 mm or a width or thickness deviation exceeding ±5 mm are rejected. In step S3, before pouring the concrete, the slump of the concrete mixture is tested to ensure that it meets the design requirement of 30-50 mm.

[0027] The mobile vibration table should be calibrated by a third-party organization every six months. The calibration parameters include vibration frequency and amplitude accuracy. Before each day's operation, the power line and grounding device of the mobile vibration table should be checked to ensure that the grounding resistance is ≤4Ω.

[0028] In step S3, after starting the mobile vibration table, the operator needs to continuously observe the state of the concrete surface. When the concrete surface no longer sinks and no obvious bubbles overflow, the vibration is stopped. The vibration time is strictly controlled between 10 and 30 seconds to prevent the concrete from being over-vibrated.

[0029] In step S4, after the component is demolded, it is immediately transferred to the finished product curing area for heat preservation and moisture retention curing. Under the winter construction conditions where the average daily temperature outside is consistently below 5℃ for 5 consecutive days, after the component is vibrated and compacted, the surface of the component is immediately covered with a double layer of insulation blanket, and the outside of the plastic mold is wrapped with insulation cotton. Then it is transferred to the finished product curing area for heat preservation and curing.

[0030] It also includes safety and environmental protection preparation steps before construction: setting up protective warning signs around the mobile vibration table operating area to prohibit approaching during equipment operation, laying geotextile or steel plates on the ground of the prefabrication area to prevent oil and chemical pollution of the soil, and thoroughly cleaning and restoring the work site to its original state after construction is completed.

[0031] Example: The following is a detailed example of a method for prefabricating small components using a mobile double hopper and vibration table proposed in this invention, demonstrating the specific application and implementation of the method in different scenarios.

[0032] Example 1: Prefabrication of Sidewalk Tiles This embodiment takes a prefabricated sidewalk tile with a specification of 300mm×300mm×60mm as an example to illustrate the implementation process of the method of the present invention in the prefabrication of conventional small components.

[0033] Construction preparation: First, the prefabrication site was leveled and hardened. After compaction using bulldozers and road rollers, a 12cm thick layer of C20 concrete was laid as the prefabrication area floor. The site was divided into a preparation area, a prefabrication area, and a finished product curing area. After inspection, the mobile vibrating table and double hopper were pushed into the prefabrication area. The measured grounding resistance was 3.8Ω, which meets the safety requirements.

[0034] Mold placement and parameter settings: Select a plastic mold that meets the dimensional requirements (allowable deviation: length ±5mm, width / thickness ±3mm), and place it on the vibration table after evenly coating the inner wall with water-based release agent. Based on the characteristics of C30 ordinary concrete, set the vibration frequency to 40Hz and the amplitude to 0.8mm.

[0035] Concrete placement and vibration compaction: The concrete slump should be controlled at around 40mm. After filling the double hopper, the concrete should be poured in two stages: first, pour to 2 / 3 of the height, vibrate for 10 seconds, then fill the remaining portion, and vibrate for another 15 seconds. Stop vibrating when the concrete surface no longer sinks and no air bubbles overflow.

[0036] Component handling and maintenance: The molded specimens were moved to the finished product curing area, covered with geotextile, and sprayed with water to retain moisture. After the strength of the test blocks under the same conditions reached 22 MPa, they were demolded, stacked neatly, and continued to be moisturized for 7 days.

[0037] Implementation results: This embodiment can pre-produce 600 floor tiles per day, improving efficiency by about 30%. The surface of the components is flat and free of air holes, with a strength qualification rate of 100%. In addition, the mobile equipment significantly reduces the mold handling distance.

[0038] Example 2: Prefabrication of high-strength concrete cable trench covers This embodiment uses a C50 high-strength concrete cable trench cover (1000mm×500mm×80mm) as an example to illustrate the implementation method of the present invention in the prefabrication of high-strength components in winter.

[0039] Construction preparation: The prefabrication area is paved with steel plates for frost protection and a windproof shed is erected. The mobile vibration table undergoes third-party calibration every six months to ensure accurate vibration parameters.

[0040] Mold placement and parameter settings: Strictly inspect the mold dimensions, remove any deformed molds, and apply an oil-based release agent. Based on the characteristics of high-strength concrete, set the vibration frequency to 45Hz and the amplitude to 0.5mm.

[0041] Concrete placement and vibration compaction: The concrete slump should be controlled at 30mm, and an appropriate amount of antifreeze should be added. The concrete should be poured in three stages, with each stage vibrating for 8-10 seconds, for a total vibration time not exceeding 25 seconds. Immediately after vibration, the surface of the component should be covered with a double layer of insulation blanket, and the mold should be wrapped with insulation cotton.

[0042] Component handling and maintenance: The components were moved to an insulated curing area equipped with a warm air blower (temperature ≥10℃). After the strength of the test blocks under the same conditions reached 25MPa, they were demolded and continued to be insulated and moisturized for 14 days.

[0043] Implementation Results: This embodiment effectively prevents concrete from freezing under winter construction conditions. The high-frequency, low-amplitude vibration method avoids aggregate segregation, resulting in dense internal components and normal strength development.

[0044] Example 3: Precast Ecological Slope Protection Blocks (Environmentally Friendly Construction) This embodiment uses recycled aggregate concrete ecological slope protection blocks as an example to illustrate the implementation of the present invention in scenarios with high environmental protection requirements.

[0045] Construction preparation: The ground in the prefabrication area is fully covered with geotextile, and a sedimentation tank is set up to collect and treat the washing wastewater. Warning signs reading "Equipment in operation, do not approach" are placed around the vibration table.

[0046] Mold placement and parameter settings: Use a perforated plastic mold and check the permeability of the holes. Based on the workability of recycled concrete, set the vibration frequency to 35Hz and the amplitude to 1.0mm.

[0047] Concrete placement and vibration compaction: The slump of the recycled concrete should be controlled at 50mm, and the voids should be fully filled during pouring. Vibrate for about 20 seconds, and stop after observing that there are no air bubbles remaining in the voids.

[0048] Component handling and maintenance: After curing in the formwork for 3 days, the blocks are removed from the formwork and stacked in a permeable curing area, covered with burlap, and kept moist using an automatic sprinkler system. Construction wastewater is recycled after sedimentation.

[0049] Implementation Results: This embodiment achieves zero soil pollution and wastewater recycling during the construction process, meets the requirements of green construction, and the blocks have complete holes and clear surface textures, thus meeting the needs of ecological functions.

[0050] Example 4: Batch Prefabrication of Small Precast Components for Highways This embodiment takes the batch prefabrication of multi-specification components such as highway curbs and warning posts as an example to illustrate the implementation of the present invention in diversified and streamlined production.

[0051] Construction preparation: The precast area is divided into zones according to component type and equipped with multiple vibrating table production lines. The mobile double hopper is equipped with two independent compartments, which can simultaneously load concrete with different mix proportions.

[0052] Mold placement and parameter settings: Switch molds according to component type and dynamically adjust vibration parameters: Curbstone: Vibration frequency 38Hz, amplitude 0.9mm; Warning post: Vibration frequency 42Hz, amplitude 0.6mm.

[0053] Concrete placement and vibration compaction: The "one hopper, one specification" feeding method is adopted to avoid concrete mixing. The vibration time is flexibly controlled according to the thickness of the component: 10-15 seconds for thin components and 20-30 seconds for thick components.

[0054] Component handling and maintenance: Pallets and forklifts are used in conjunction for transport to improve handling efficiency. A maintenance log is established to systematically record the demolding time and strength development of each batch.

[0055] Implementation Results: This embodiment achieves simultaneous prefabrication of components of various specifications, increasing daily output by approximately 40%. The vibration parameters are adjustable, the equipment is flexible in movement, adapting to diverse production needs, and the maintenance management is refined, resulting in uniform and stable component quality.

[0056] The workflow of this invention: I. Construction Preparation Stage First, the prefabrication site was leveled and hardened using bulldozers and road rollers, and a C15 or higher strength concrete surface layer at least 10cm thick was laid. Then, the site was clearly divided into a preparation area, a prefabrication area, and a finished product curing area. Next, a mobile vibrating table and a mobile double hopper were transported to the prefabrication area, and their mechanical condition and electrical systems were inspected to ensure the equipment was ready for normal operation.

[0057] II. Mold Placement and Parameter Setting Stage Select a suitable plastic mold, check its appearance and dimensional integrity, and evenly apply a release agent to the inner wall. Place the prepared mold on the worktable of a mobile vibrating table. According to the type of concrete (such as ordinary concrete or high-strength concrete) and strength design requirements of the component to be precast, set the corresponding vibration parameters on the vibrating table: vibration frequency range of 30-50Hz, amplitude range of 0.5-1.0mm, to ensure that the subsequent vibration compaction effect meets the component quality requirements.

[0058] III. Concrete Feeding and Vibration Compaction Stage The properly mixed concrete mixture, with a slump controlled within the range of 30-50mm, is loaded into a mobile double hopper. The operator manually controls the opening and closing gates of the double hopper to pour the concrete into the placed plastic mold in multiple, even batches, ensuring the mold is completely filled and the thickness meets the design specifications. Then, the mobile vibrating table is activated to apply vibration to the concrete in the mold, with the vibration time strictly controlled between 10-30 seconds. The operator must continuously observe the surface condition of the concrete and stop vibration immediately when it stops settling and no obvious air bubbles emerge, avoiding over-vibration.

[0059] IV. Component Processing and Curing Stage After vibration compaction is completed, the components with molds are removed from the vibrating table and transported to the finished product curing area. In the curing area, the components are cured under the same conditions as the molds. Once the strength of the concrete test blocks cured concurrently reaches 21 MPa or higher, the components are demolded. After demolding, the components are neatly stacked according to a pre-set plan and covered for moisture retention curing. If necessary, thermal insulation measures are taken to ensure the normal development of concrete strength.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for prefabricating small components using a mobile double hopper and vibrating table, characterized in that, Includes the following steps: S1. Construction preparation: The prefabrication site is leveled and hardened, and a preparation area, a prefabrication area and a finished product curing area are divided. The mobile vibrating table and the mobile double hopper are transported to the prefabrication area and their condition is checked. S2. Mold Placement and Parameter Setting: After inspecting the plastic mold and applying a release agent, place it on the worktable of the mobile vibration table. According to the type of concrete and strength requirements of the precast component, set the vibration frequency and amplitude on the mobile vibration table. The vibration frequency range is 30-50Hz, and the amplitude range is 0.5-1.0mm. S3. Concrete feeding and vibration compaction: Load the qualified concrete mixture into the mobile double hopper, operate the opening and closing gate of the mobile double hopper for manual feeding, and inject the concrete into the plastic mold placed in step S2 in multiple times. Start the mobile vibration table to vibrate the concrete in the mold. The vibration time is controlled at 10-30 seconds until the concrete surface no longer sinks and no obvious air bubbles overflow. S4. Component handling and curing: After vibration, the component with mold is removed from the mobile vibration table and transported to the finished product curing area. When the strength of the concrete test block cured under the same conditions reaches more than 21MPa, it is demolded. The demolded component is stacked according to the preset plan and covered for moisture curing.

2. The method for prefabricating small components using a mobile double hopper and vibrating table according to claim 1, characterized in that, In step S1, the mobile vibrating table and the mobile double hopper are moved by welding and installing foot pulleys at their bottoms. In step S3, when concrete is being poured, the opening and closing gates of the mobile double hopper are controlled to ensure that the concrete is evenly distributed throughout the entire plastic mold and that the thickness of the component meets the requirements.

3. The method for prefabricating small components using a mobile double hopper and vibrating table according to claim 2, characterized in that, During the vibration compaction process in step S3, the vibration parameters are adjusted according to the mix proportion characteristics of the concrete. High-frequency vibration is used to promote the distribution of fine aggregates, low-frequency vibration is used to promote the compaction of coarse aggregates, small amplitude is used to match high-strength concrete, and large amplitude is used to match ordinary concrete.

4. The method for prefabricating small components using a mobile double hopper and vibrating table according to claim 1, characterized in that, When working in the prefabrication area, the mobility of the mobile double hopper and the mobile vibrating table is utilized to place the plastic molds in the mobile vibrating table station in a row-by-row order from far to near, and to discharge and vibrate the concrete to reduce the transportation distance of the plastic molds and undemolded components between the preparation area, the prefabrication area and the finished product curing area.

5. A method for prefabricating small components using a mobile double hopper and vibrating table according to claim 4, characterized in that, In step S2, before placing the plastic mold, the geometric dimensions of the plastic mold are checked, and plastic molds with a length deviation exceeding +5 to -10 mm or a width or thickness deviation exceeding ±5 mm are rejected. In step S3, before pouring concrete, the slump of the concrete mixture is tested to ensure that it meets the design requirement of 30-50 mm.

6. The method for prefabricating small components using a mobile double hopper and vibrating table according to claim 5, characterized in that, The mobile vibration table is calibrated by a third-party organization every six months. The calibration parameters include vibration frequency and amplitude accuracy. Before each day's operation, the power line and grounding device of the mobile vibration table are checked to ensure that the grounding resistance is ≤4Ω.

7. A method for prefabricating small components using a mobile double hopper and vibrating table according to claim 5, characterized in that, In step S3, after starting the mobile vibration table, the operator needs to continuously observe the state of the concrete surface. When the concrete surface no longer sinks and no obvious bubbles overflow, the vibration is stopped. The vibration time is strictly controlled between 10 and 30 seconds to prevent the concrete from being over-vibrated.

8. The method for prefabricating small components using a mobile double hopper and vibrating table according to claim 1, characterized in that, In step S4, after the component is demolded, it is immediately transferred to the finished product curing area for heat preservation and moisture retention curing. Under the winter construction conditions where the average daily temperature outside the building is consistently below 5°C for 5 consecutive days, after the component is vibrated and compacted, the surface of the component is immediately covered with a double-layer insulation blanket, and the outside of the plastic mold is wrapped with insulation cotton. Then it is transferred to the finished product curing area for heat preservation and curing.

9. A method for prefabricating small components using a mobile double hopper and vibrating table according to claim 8, characterized in that, It also includes safety and environmental protection preparation steps before construction: setting up protective warning signs around the operating area of ​​the mobile vibration table to prohibit approaching during equipment operation, laying geotextile or steel plates on the ground of the prefabrication area to prevent oil and chemical pollution of the soil, and thoroughly cleaning and restoring the work site to its original state after construction is completed.

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