A mass concrete pouring device

Abstract

The utility model relates to the technical field of building engineering, a mass concrete pouring device for solving the problems of the prior art that the equipment cannot pass on the un-solidified concrete surface, the operation efficiency is low and the maintenance is complicated and the like. The device comprises a box type floating frame, a wide tread low-pressure pneumatic tire mounted at the bottom of the floating frame, a mixing bin arranged at the top of the floating frame, an input port and an output port in communication with the mixing bin, an electric drive system and a cleaning system. The mixing bin is provided with a stirring mechanism driven by a stirring motor. The pneumatic tire has a ground contact pressure of less than or equal to 50 kPa, can freely travel on the un-solidified concrete surface without sinking, and the output port is provided with a pump-out device. The electric drive system comprises a drive motor, a battery pack and a remote controller, and supports remote wireless operation. The cleaning system comprises a water tank, a water pump and a water pipe, can realize rapid automatic cleaning, and the box type floating frame is provided with lifting hooks for convenient lifting. The device has the advantages of flexible passing, high operation efficiency, convenient maintenance, energy saving and safety, and is suitable for mass concrete projects such as dams and deep foundation pits.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a special device for large-volume concrete pouring operations, which is particularly suitable for pouring operations in areas where traditional transportation equipment is difficult to reach in large-volume concrete projects such as dams, large building foundations, bridge abutments, and deep foundation pits. Background Technology

[0002] Large-volume concrete projects are a crucial part of construction engineering, characterized by large total volumes (often reaching thousands to tens of thousands of cubic meters per project), complex work areas (such as internal corridors of dams, the bottom of deep foundation pits, and the foundations of ultra-high-rise buildings), and high requirements for pouring quality (controlling cracks and ensuring density). However, existing large-volume concrete pouring processes suffer from significant technical deficiencies in transportation and pouring equipment, specifically as follows: Traditional engineering vehicle transportation is limited: engineering vehicles rely on hardened roads or temporary access roads to travel, and cannot drive on uncured concrete surfaces (they are prone to getting stuck in the concrete, causing equipment damage and disrupting the flatness of the poured surface). This results in narrow corridors inside the dam, the bottom of deep foundation pits, and other areas without hardened roads becoming "blind spots for operation," requiring the construction of additional temporary access roads, which increases construction costs and time.

[0003] Concrete quality is easily affected: When engineering vehicles transport concrete over long distances (usually more than 1km), the concrete remains in the tank for a long time, which can easily lead to slump loss (the loss rate can reach 20%-30%), or even enter the initial setting stage. Not only is it necessary to add admixtures to adjust the performance, but the reduced workability of the concrete may also lead to defects such as honeycomb and pitting after pouring, affecting the structural strength.

[0004] Cable hoisting is inefficient: using tower cranes or crawler cranes in conjunction with concrete hoppers, the hoisting capacity is only 1-3 cubic meters per trip, and the crane position and hopper angle need to be adjusted frequently. The manual operation is intensive, and the pouring efficiency is less than 10 cubic meters per hour. At the same time, high-altitude hoisting poses safety risks such as hopper falling and concrete spillage, and it is impossible to operate in severe weather such as strong winds, rain, and snow.

[0005] Subsequent cleaning is difficult: Existing equipment's concrete conveying pipelines, hoppers, and other components require manual cleaning using high-pressure water guns, which is inefficient (each cleaning takes 1-2 hours). Furthermore, residual concrete easily solidifies on the inner walls of the components, causing pipeline blockage during the next use and further reducing operational efficiency.

[0006] In view of the shortcomings of the existing technologies, there is an urgent need for a large-volume concrete pouring device that combines mobility, concrete anti-curing ability, efficient pouring and convenient maintenance, so as to solve the pain points of transportation and pouring in large-volume concrete projects. Utility Model Content

[0007] This utility model aims to solve the technical problems of "limited transportation, easily damaged quality, low efficiency, and cumbersome maintenance" in the existing large-volume concrete pouring process. Specifically, these problems include: equipment cannot pass on uncured concrete surfaces, limiting the operating range; concrete is prone to initial setting during long-distance transportation or when left to stand, affecting pouring quality; high reliance on manual operation, resulting in low pouring efficiency and safety risks; and difficulty in cleaning equipment components, with residual concrete easily causing blockages. This utility model provides a large-volume concrete pouring device that integrates core components such as a box-type floating frame, inflatable tires, a mixing chamber, and an electric drive system to achieve efficient, continuous, and high-quality concrete pouring under complex working conditions. The device includes a box-type floating frame, inflatable tires installed at the bottom of the box-type floating frame, a mixing chamber located at the top of the box-type floating frame, an input port and an output port connected to the mixing chamber, and an electric drive system for driving the inflatable tires; the mixing chamber is equipped with a mixing mechanism driven by a mixing motor. The box-type floating frame provides overall buoyancy and structural support, while pneumatic tires enable the device to move across uncured concrete surfaces. The mixing chamber prevents initial setting of the concrete through continuous mixing, and the electric drive system ensures a clean and controllable power source. This solution enables autonomous movement and continuous operation of the equipment in areas without paved surfaces, significantly expanding the pouring range and avoiding performance loss caused by static concrete placement.

[0008] Furthermore, the pneumatic tire is a wide-tread, low-pressure tire, which can travel on uncured concrete surfaces without sinking. The wide tread design increases the ground contact area, and the low-pressure tire reduces the ground pressure (≤50kPa), thereby preventing the device from sinking into soft concrete, improving the stability of the device on the poured surface, avoiding damage to the poured surface caused by traditional equipment, and expanding the effective working area.

[0009] Furthermore, the mixing chamber includes a chamber body, mixing blades disposed within the chamber body, and a mixing motor for driving the mixing blades; a base is provided at the bottom of the mixing chamber. The mixing blades rotate continuously under the drive of the motor, maintaining the uniformity and fluidity of the concrete, effectively preventing concrete segregation and initial setting, controlling the slump loss rate to within 5%, and ensuring the compactness of the pouring and the structural strength.

[0010] Furthermore, the output port is equipped with a pumping device, the end of which has an adjustable pumping nozzle. The pumping device pumps concrete from the mixing chamber mechanically or hydraulically. The adjustable nozzle allows for precise control of the pouring point and direction, improving pouring accuracy and flexibility, adapting to the pouring needs of complex structures such as corridors and corners, and reducing material waste.

[0011] Furthermore, the electric drive system includes a drive motor for driving the pneumatic tires, a battery pack, and an inner and outer electrical control box. The inner electrical control box houses a motor controller and a remote control receiver. The inner electrical control box and battery pack are sealed inside the box-type floating frame. Electric drive produces no exhaust emissions, the remote control enables wireless operation, and the sealed installation is dustproof and waterproof, improving system reliability. This achieves low-carbon, low-noise operation, remote control reduces human risk, and the sealed design extends equipment lifespan.

[0012] Furthermore, the remote control receiver supports remote control operation, transmitting commands via wireless signals to control the device's movement, stirring, pumping, and other actions, further reducing the labor intensity of operators and improving operational safety in dangerous or confined environments.

[0013] Furthermore, the device also includes a cleaning system, which comprises a water tank, a water pump, and water pipes connected to the mixing chamber and the pump outlet. The water pump delivers water from the tank to each component through the pipes for high-pressure rinsing, achieving rapid and thorough equipment cleaning. A single cleaning session does not exceed 15 minutes, effectively preventing blockages caused by the hardening of concrete residue.

[0014] Furthermore, the box-type floating frame is equipped with hooks. The hooks provide lifting points for the lifting equipment, facilitating the overall lifting and positioning of the device, enhancing the mobility and deployment flexibility of the equipment, and making it suitable for lifting scenarios such as deep foundation pits and high drops.

[0015] Furthermore, the device is also equipped with a GPS locator and a construction path planning system, enabling automated or semi-automated pouring operations. The GPS module locates the equipment position in real time, and the path planning system controls the movement of the equipment and the operation process according to the preset pouring path, improving the intelligence level of the pouring operation, reducing human error, and increasing construction efficiency and consistency.

[0016] Compared with the prior art, the present invention has the following significant advantages: Significantly improved traffic flexibility: Wide-tread low-pressure pneumatic tires combined with box-type floating frames, with a ground pressure of ≤50kPa, can travel freely on uncured concrete surfaces without relying on hardened roads, covering "operational blind spots" such as corridors and deep foundation pits inside the dam, reducing the cost of building temporary passages.

[0017] Stable and controllable concrete quality: Real-time mixing in the mixing chamber avoids initial setting of concrete; Short input-mixing-output path, concrete slump loss rate ≤5%, no need to add admixtures, structural density increased by 10%-15% after pouring, and crack incidence reduced by more than 20%.

[0018] Significantly improved work efficiency: 2-3 times higher than traditional cable hoisting (≤10m³ / h); no risks associated with high-altitude hoisting; can operate normally in windy and rainy weather (wind speed ≤6, moderate rain or below); shortens the construction period by 15%-20%.

[0019] Optimized maintenance convenience: The cleaning system automatically cleans the mixing chamber, pumping device and nozzles, with a single cleaning time of ≤15 minutes; the mixing chamber, drive motor and other components can be detached and connected, so there is no need to disassemble the whole thing during maintenance, which effectively improves maintenance efficiency.

[0020] Outstanding energy efficiency and safety: Electric drive produces no exhaust emissions and consumes less energy than traditional diesel engineering vehicles. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model; Figure 2 An exploded view diagram provided for an embodiment of this utility model; Figure 3 A schematic diagram of the pumping device and water pipe structure provided for an embodiment of this utility model.

[0023] The following are the labeling elements in the figure: 1. Box-type floating frame; 11. Hook; 2. Pneumatic tire; 3. Mixing chamber; 31. Inlet; 32. Pumping device; 321. Pumping nozzle; 33. Base; 34. Mixing motor; 4. Drive motor; 5. Battery pack; 6. Internal electrical box; 61. External electrical box; 7. Water tank; 71. Water pipe; 72. Water pump.

[0024] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Please see Figures 1 to 3 This utility model provides a large-volume concrete pouring device that integrates core components such as a box-type floating frame 1, an inflatable tire 2, a mixing chamber 3, and an electric drive system to achieve efficient, continuous, and high-quality concrete pouring under complex working conditions.

[0028] The box-type floating frame 1, serving as the load-bearing foundation and buoyancy source of the device, is made of high-strength 5083 aluminum alloy, adaptable to the humid and alkaline environment of concrete engineering, while reducing the self-weight of the floating frame to increase buoyancy. The box-type floating frame 1 has an overall rectangular structure with a hollow, sealed internal design, providing buoyancy of no less than 40kN, sufficient to support the total weight of the mixing chamber 3, the power system, and other accessories, ensuring no risk of sinking. The box-type floating frame 1 employs a grid-like reinforcing rib structure, with the reinforcing ribs made of the same aluminum alloy profiles, forming a uniform stress grid to evenly distribute local loads to the entire floating frame, preventing deformation caused by mixing vibration or localized pressure. The reinforcing ribs are connected to the panel of the box-type floating frame 1 using TIG welding. The panel in this area is thickened to 8mm and pre-embedded with Q355B steel plates, and the connection is enhanced by plug welding to improve the installation stability of the mixing chamber 3. 304 stainless steel hooks 11 are welded to the four corners of the box-type floating frame 1 for lifting equipment. The outer surface of the box-type floating frame 1 is sandblasted to remove rust and then coated with two layers of epoxy resin anti-corrosion paint to extend its service life.

[0029] The pneumatic tires 2, installed at the bottom of the box-type floating frame 1, are crucial for enabling the device to traverse uncured concrete surfaces. The pneumatic tires 2 employ a wide tread and low-pressure design. The outer layer of the pneumatic tires 2 is made of highly abrasion-resistant carbon black rubber to resist friction against the concrete surface. The working tire pressure is set at 0.2-0.3 MPa, finely adjusted according to the concrete slump: 0.2 MPa for a slump of 200-220 mm, and 0.3 MPa for a slump of 180-200 mm. At this point, the ground contact area of ​​a single tire is approximately 0.81 m², and the total ground contact area of ​​the four tires is 3.24 m². Combined with the total weight of the device (140 kN), the ground pressure is approximately 43.2 kPa, far below the compressive strength of uncured concrete (≥100 kPa), with a subsidence of ≤5 mm, thus neither damaging the poured surface nor increasing driving resistance. The pneumatic tires 2 are rigidly connected to the drive motor 4 via flanges. A double-lip skeleton oil seal and an ABS dust cover are installed inside the wheel hub to prevent concrete impurities from entering the motor bearings.

[0030] The mixing chamber 3 is located on top of the box-type floating frame 1 and is used for temporary storage and mixing of concrete to prevent it from solidifying. The mixing chamber 3 has a horizontal structure, including a chamber body, mixing blades installed within the chamber body, and a mixing motor 34 that drives the mixing blades. The mixing blades are installed at a 35° angle and are stress-relieved after welding to the mixing shaft. The mixing shaft is supported by self-aligning roller bearings, with bearing housings made of ZG270-500 cast steel and filled with lithium-based grease. A base 33 is located at the bottom of the mixing chamber 3 for stable support. The mixing chamber 3 has an inlet 31 and an outlet. The inlet 31 is used to connect to a pump truck to load concrete, and the outlet is equipped with a pumping device 32. The pumping device 32 has an adjustable-direction pumping nozzle 321 at its end for precise control of the concrete pouring point and direction. The pumping device 32 uses a G20 screw concrete pump, and the discharge port is connected to the pumping nozzle 321 via a high-pressure rubber hose.

[0031] The electric drive system drives the pneumatic tires 2 and the mixing mechanism, including a drive motor 4, a battery pack 5, an internal electrical box 6, and an external electrical box 61. The drive motor 4 consists of four 7.5kW YSP-200L-4 permanent magnet synchronous motors, providing four-wheel drive. The battery pack 5 is fixed inside the battery compartment of the box-type floating frame 1. The battery compartment's steel plate has ventilation holes for heat dissipation, and is isolated by rock wool fireproof partitions. The BMS system provides overcharge (≤410V), over-discharge (≥300V), overcurrent (≤300A), short circuit, and temperature protection from -20℃ to 55℃. Data is transmitted via a CAN bus. The internal electrical box 6 is sealed inside the box-type floating frame 1 and contains a motor controller and a remote control receiver. The motor controller is an ACS510 model, and the remote control receiver is a CC2530 module, supporting 2.4GHz wireless communication with a receiving sensitivity of -97dBm and a control distance of 500-800m. Paired with a FUTABA T10J remote controller, it enables 10-channel control of driving, mixing, pumping, cleaning, and emergency stop. The internal electrical box 6 also includes an S7-1200 CPU 1214C PLC as the core of the control system. The external electrical box 61 is equipped with a 32A three-phase four-wire socket and a DZ47-63 overload protector, supporting 380V / 50Hz external power supply, enabling charging while operating.

[0032] The cleaning system includes a water tank 7, a water pump 72, and a water pipe 71 connecting to the mixing chamber 3 and the pumping device 32. The water tank 7 is mounted on an angle steel support of the box-type floating frame 1, with a water inlet at the top and a drain ball valve at the bottom. The water pump 72 is a 3kW high-pressure centrifugal water pump, connected to the main water pipe 71, and branched into three lines connecting to the annular spray pipe of the mixing chamber 3, the spray connector of the pumping device 32, and the miniature spray head of the pumping nozzle 321. A bypass free water pipe can also be added for cleaning the surface of the device.

[0033] In addition, the device is equipped with a GPS locator and a construction path planning system, using Trimble R10 differential GPS with a static accuracy of ±2mm+1ppm and a dynamic accuracy of ±5mm+1ppm. The system supports importing .ifc / .rvt models, automatically generating serpentine or circular paths with a spacing of 2.0m, and providing audible and visual alarms or automatic correction when the real-time positioning deviation exceeds 10cm.

[0034] In typical applications, this device can be used for pouring concrete in internal dam galleries or deep foundation pits. For example, during the pouring of internal dam galleries, the device is hoisted in by a tower crane, connected to the mixing plant's delivery pipe, and its parameters are imported into the BIM model (e.g., 300mm thick bottom, 0.5m / min speed, 3m³ / h discharge rate; 200mm thick sidewalls, 0.3m / min speed, 2m³ / h discharge rate), and the concrete is automatically poured along a serpentine path. During deep foundation pit pouring, it is hoisted to the crushed stone cushion layer, fed by a transfer hopper, and its circular path avoids areas with dense reinforcement, allowing for manual filling of any blind spots. After operation, the device is automatically cleaned, hoisted out for maintenance, and its continuous and stable operation is ensured.

[0035] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0036] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A large-volume concrete pouring device, characterized in that, include: The container is a box-type floating frame (1), an inflatable tire (2) installed at the bottom of the box-type floating frame (1), a mixing chamber (3) set at the top of the box-type floating frame (1), an inlet for inputting concrete and an outlet for outputting concrete connected to the mixing chamber (3), and an electric drive system for driving the inflatable tire (2); the mixing chamber (3) is equipped with a mixing mechanism driven by a mixing motor (34).

2. The large-volume concrete pouring device according to claim 1, characterized in that: The pneumatic tire (2) is a wide-tread low-pressure tire with a ground pressure ≤50kPa.

3. The large-volume concrete pouring device according to claim 1, characterized in that: The mixing chamber (3) includes a chamber body, mixing blades disposed in the chamber body, and a mixing motor (34) for driving the mixing blades; the bottom of the mixing chamber (3) is provided with a base (33).

4. The large-volume concrete pouring device according to claim 1, characterized in that: The output port is provided with a pumping device (32), and its end is provided with an adjustable pumping nozzle (321).

5. The large-volume concrete pouring device according to claim 1, characterized in that: The electric drive system includes a drive motor (4) for driving the pneumatic tire (2), a battery pack (5), an inner electrical box (6) and an outer electrical box (61). The inner electrical box (6) is equipped with a motor controller and a remote control receiver. The inner electrical box (6) and the battery pack (5) are sealed inside the box-type floating frame (1).

6. The large-volume concrete pouring device according to claim 5, characterized in that: The remote control receiver supports remote control operation.

7. The large-volume concrete pouring device according to claim 1, characterized in that: It also includes a cleaning system, which includes a water tank (7), a water pump (72) and a water pipe (71) connected to the mixing chamber (3) and the pumping device (32).

8. The large-volume concrete pouring device according to claim 1, characterized in that: The box-type floating frame (1) is equipped with a hook (11).

9. The large-volume concrete pouring device according to claim 1, characterized in that: The device is also equipped with a GPS locator and a construction path planning system. The construction path planning system is communicatively connected to the electric drive system and is used to control the device to travel and pour concrete according to a preset path.

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