A roller compacted concrete delivery system and method

Abstract

This invention discloses a roller-compacted concrete conveying system, including an upper unloading platform, a lower receiving platform, and a pipeline. The pipeline is located between the upper unloading platform and the lower receiving platform. A storage hopper is provided on the upper unloading platform. The upper end of the pipeline is connected to the storage hopper via an upper valve, and the lower end of the pipeline is provided with a lower valve. A material level detection mechanism is provided on the storage hopper. The roller-compacted concrete conveying system also includes a concrete transport vehicle, a silo transfer vehicle, a control center, and a material detection mechanism for detecting the material quantity in the concrete transport vehicle. The material level detection mechanism, the upper valve, the lower valve, the concrete transport vehicle, the silo transfer vehicle, and the material detection mechanism are all connected to the control center. A roller-compacted concrete conveying method is also disclosed, using the roller-compacted concrete conveying system. This roller-compacted concrete conveying system and method can ensure good concrete quality, good coordination, high automation, and high overall efficiency.

Description

Technical Field

[0001] This invention relates to the field of roller-compacted concrete conveying technology, and more particularly to a roller-compacted concrete conveying system and method. Background Technology

[0002] Roller-compacted concrete (RCC) is a dry-hard concrete type, typically constructed using continuous, thin-layer construction. The construction process is simple and fast, allowing the use of large-scale general-purpose machinery. It is widely used for large-volume concrete pouring in water conservancy and hydropower projects. RCC is generally transported via a pipeline system. Specifically, a pipeline is installed between an upper and lower platform. Concrete trucks on the upper platform pour concrete into the pipeline from the top, while transfer trucks on the lower platform receive the concrete at the bottom and then transport it to the construction site. However, this method has the following drawbacks:

[0003] 1) Concrete transport vehicles and silo transfer vehicles need to arrive at the top and bottom of the pipeline at the same time. Unloading and receiving materials need to be done simultaneously, which is troublesome to coordinate and inefficient.

[0004] 2) The conveying rate of concrete in the pipeline is difficult to control, making it difficult to unload concrete under stable fluid conditions. This results in significant aggregate segregation and large loss of VC value, which cannot ensure the quality of concrete. At the same time, pipe bursts and blockages are prone to occur during unloading.

[0005] 3) Lack of automated management results in low overall efficiency. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a roller-compacted concrete conveying system and method that can ensure concrete quality, good coordination, high degree of automation and high overall efficiency.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A roller-compacted concrete conveying system includes an upper unloading platform, a lower receiving platform, and a pipeline. The pipeline is located between the upper unloading platform and the lower receiving platform. A storage hopper is provided on the upper unloading platform. The upper end of the pipeline is connected to the storage hopper via an upper valve, and the lower end of the pipeline is provided with a lower valve. A material level detection mechanism is provided on the storage hopper. The roller-compacted concrete conveying system also includes a concrete transport vehicle, a silo transfer vehicle, a control center, and a material detection mechanism for detecting the amount of material in the concrete transport vehicle. The material level detection mechanism, the upper valve, the lower valve, the concrete transport vehicle, the silo transfer vehicle, and the material detection mechanism are all connected to the control center.

[0009] As a further improvement to the above technical solution:

[0010] The pipe is equipped with air holes.

[0011] An inlet / outlet valve is provided at the air vent, and the inlet / outlet valve is connected to the control center information.

[0012] The pipes and storage hoppers are equipped with vibrators, which are connected to the control center via signals.

[0013] The unloading platform is equipped with a limiting mechanism near the storage hopper to block concrete transport vehicles.

[0014] The upper valve is a butterfly-shaped arc gate.

[0015] The material detection mechanism is located on the feed side of the storage hopper or on the concrete transport vehicle.

[0016] The pipeline is fixed to the slope wall between the upper unloading platform and the lower receiving platform by a support structure.

[0017] A method for conveying roller-compacted concrete, using the aforementioned roller-compacted concrete conveying system, includes the following steps:

[0018] S1. The control center sends a close signal to both the upper and lower valves, thus closing the upper and lower valves;

[0019] S2. The control center sends an opening signal to the first concrete truck and the first silo transfer truck. After receiving the opening signal, the first concrete truck arrives at the upper unloading platform and unloads the concrete into the storage hopper. After receiving the opening signal, the first silo transfer truck arrives at the lower receiving platform and is located below the lower valve.

[0020] S3. After the material detection mechanism detects that the concrete in the first concrete truck has been unloaded, it sends a signal to the control center that the unloading is complete. After receiving the signal, the control center sends an opening signal to the upper valve to open the upper valve, so that the pipeline is filled with concrete. It then sends a signal to the first concrete truck that the unloading is complete and a signal to the second concrete truck that it is ready to unload.

[0021] S4. After the material level detection mechanism detects that the material level in the storage hopper remains unchanged, it sends a full material signal to the control center. After receiving the full material signal, the control center sends a keep-open signal to the upper valve to keep the upper valve open. In addition, after receiving the arrival signal of the first silo transfer car, the control center sends an open signal to the lower valve to open the lower valve and discharge the material to the first silo transfer car below.

[0022] S5. When the material level detection mechanism detects that the material level in the storage hopper has dropped by a predetermined amount, the control center sends a closing signal to the lower valve to close the lower valve, and sends a receiving completion signal to the first hopper transfer car and a receiving preparation signal to the second hopper transfer car.

[0023] S6. Following the signal instructions from the control center, the subsequent material transfer vehicles will arrive at the lower valve to receive the material. Following the signal instructions from the control center, several concrete transport vehicles will unload the material into the storage hopper in succession, so that the pipeline remains full during the material discharge process.

[0024] As a further improvement to the above technical solution:

[0025] During the material feeding process, when the material level detection mechanism detects that the material level in the storage hopper has dropped to zero, it sends a no-feed signal to the control center. After receiving the no-feed signal, the control center sends a closing signal to the upper valve to close the upper valve.

[0026] Compared with the prior art, the advantages of the present invention are as follows:

[0027] The roller-compacted concrete conveying system of this invention, based on the material level signal in the storage hopper fed back by the material level detection mechanism, instructs the concrete transport truck to replenish the hopper, keeping the pipeline full. This makes the concrete conveying rate in the pipeline easy to control, allowing concrete to be unloaded under stable fluid conditions, minimizing aggregate segregation and VC value loss, ensuring concrete quality, and preventing pipe bursts and blockages during unloading. Furthermore, the commands for the concrete transport truck and the slab transfer truck are coordinated and controlled by the control center based on signals from the material level detection mechanism and the material detection mechanism, resulting in good coordination, high automation, and high overall efficiency.

[0028] The roller-compacted concrete conveying method of this invention involves the control center instructing the concrete transport truck to replenish the storage hopper with material based on the material level signal fed back by the material level detection mechanism. This keeps the pipeline full, making it easier to control the concrete conveying rate in the pipeline. This ensures stable fluid flow during concrete unloading, minimizing aggregate segregation and VC value loss, thus guaranteeing concrete quality and preventing pipe bursts and blockages during unloading. Furthermore, the commands for the concrete transport truck and the slab transfer truck are coordinated and controlled by the control center based on signals from the material level detection mechanism and the material detection mechanism, resulting in good coordination, a high degree of automation, and high overall efficiency. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the roller-compacted concrete conveying system of the present invention.

[0030] Figure 2 This is a schematic diagram of the pipeline structure of the roller-compacted concrete conveying system of the present invention.

[0031] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of AA.

[0032] The labels in the diagram represent:

[0033] 1. Upper unloading platform; 10. Support structure; 11. Limiting mechanism; 2. Lower receiving platform; 3. Pipeline; 31. Air vent; 4. Storage hopper; 5. Upper valve; 6. Lower valve; 7. Concrete transport truck; 8. Container transfer truck; 9. Vibrator. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Example 1:

[0039] Figures 1 to 3This invention illustrates an embodiment of the roller-compacted concrete conveying system. The system includes an upper unloading platform 1, a lower receiving platform 2, and a pipeline 3. The pipeline 3 is located between the upper unloading platform 1 and the lower receiving platform 2. A storage hopper 4 is provided on the upper unloading platform 1. The upper end of the pipeline 3 is connected to the storage hopper 4 via an upper valve 5, and the lower end of the pipeline 3 is provided with a lower valve 6. A material level detection mechanism is provided on the storage hopper 4. The roller-compacted concrete conveying system also includes a concrete transport vehicle 7, a silo transfer vehicle 8, a control center, and a material detection mechanism for detecting the amount of material in the concrete transport vehicle 7. The material level detection mechanism, upper valve 5, lower valve 6, concrete transport vehicle 7, silo transfer vehicle 8, and material detection mechanism are all connected to the control center.

[0040] The conveying process of this roller-compacted concrete conveying system is as follows: The control center sends a closing signal to the upper valve 5 and the lower valve 6, closing them; the control center sends an opening signal to the first concrete truck 7 and the first silo transfer truck 8. Upon receiving the opening signal, the first concrete truck 7 arrives at the upper unloading platform 1 and unloads concrete into the storage hopper 4. The first silo transfer truck 8, upon receiving the opening signal, arrives at the lower receiving platform 2 and is positioned below the lower valve 6; the material detection mechanism detects that the concrete in the first concrete truck 7 has been unloaded and sends an unloading completion signal to the control center. Upon receiving the unloading completion signal, the control center sends an opening signal to the upper valve 5, opening it to fill the pipeline 3 with concrete, and sends an unloading completion signal to the first concrete truck 7 and a ready-to-unload signal to the second concrete truck 7; the material level detection mechanism... After detecting that the material level in the storage hopper 4 remains unchanged, a full material signal is sent to the control center for pipeline 3. Upon receiving the full material signal, the control center sends a keep-open signal to the upper valve 5, keeping the upper valve 5 open. Simultaneously, upon receiving the arrival signal of the first silo transfer vehicle 8, the control center sends an open signal to the lower valve 6, opening it and allowing material to be discharged onto the first silo transfer vehicle 8. When the material level detection mechanism detects a predetermined drop in the material level in the storage hopper 4, the control center sends a close signal to the lower valve 6, closing it, and sends a receiving completion signal to the first silo transfer vehicle 8 and a ready-to-receive signal to the second silo transfer vehicle 8. Subsequent silo transfer vehicles 8, under the signal instructions from the control center, successively arrive below the lower valve 6 to receive material. Subsequently, several concrete transport vehicles 7, under the signal instructions from the control center, successively unload material into the storage hopper 4, keeping pipeline 3 full during the discharge process.

[0041] In this roller-compacted concrete conveying system, the control center sends material level signals from the material level detection mechanism to the concrete transport truck 7 to replenish the material in the storage hopper 4, keeping the pipeline 3 full. This allows for easy control of the concrete conveying rate in the pipeline 3, ensuring stable fluid flow during concrete unloading, minimizing aggregate segregation and VC value loss, thus guaranteeing concrete quality and preventing pipe bursts and blockages during unloading. Furthermore, the commands for the concrete transport truck 7 and the silo transfer truck 8 are coordinated and controlled by the control center based on signals from the material level detection mechanism and the material detection mechanism, resulting in good coordination, a high degree of automation, and high overall efficiency.

[0042] Furthermore, in this embodiment, the pipe 3 is provided with an air vent 31. When the pipe 3 is initially fed, the lower valve 6 is closed. The control center detects the completion of unloading by the concrete truck 7 via a material detection mechanism, then opens the upper valve 5 to fill the pipe 3. As the concrete falls, air can be discharged through the air vent 31 until the pipe 3 is full of concrete. Thereafter, during normal operation, the upper valve 5 remains open, and the pipe 3 remains fully filled. The air vent 31 is located at the top of the pipe 3.

[0043] Furthermore, pipe 3 is composed of multiple detachable and splicable sections.

[0044] Furthermore, in this embodiment, an inlet / outlet valve is provided at the vent 31, and the inlet / outlet valve is connected to the control center. The control center controls the opening and closing of the vent 31 by controlling the inlet / outlet valve.

[0045] Furthermore, in this embodiment, vibrators 9 are installed on the pipe 3 and the storage hopper 4, and the vibrators 9 are connected to the control center via signals. Activating the vibrators 9 on the full pipe section prevents concrete from adhering to the inner wall of the pipe 3. During unloading, the control center activates the vibrators 9, causing the storage hopper 4 and the pipe 3 to vibrate, preventing concrete from adhering to the inner walls of the storage hopper 4 and the pipe 3, which could lead to subsequent concrete blockage. Preferably, two vibrators 9 are installed below the storage hopper 4 and below the pipe 3.

[0046] Furthermore, in this embodiment, a limiting mechanism 11 for blocking the concrete transport vehicle 7 is provided on the upper unloading platform 1 near the storage hopper 4. The upper unloading platform 1 has sufficient space to ensure that the concrete transport vehicle 7 can rotate smoothly, and the limiting mechanism 11 (a poured concrete barrier) ensures that the concrete transport vehicle 7 is in a safe position when unloading.

[0047] Furthermore, in this embodiment, the upper valve 5 is a butterfly-shaped arc gate.

[0048] Furthermore, in this embodiment, the material detection mechanism is located on the feeding side of the storage hopper 4 or on the concrete transport vehicle 7. Preferably, the material detection mechanism is installed on the upper part of the storage hopper 4 (such as a camera).

[0049] Furthermore, in this embodiment, the pipe 3 is fixed to the slope wall between the upper unloading platform 1 and the lower receiving platform 2 by the support structure 10. Preferably, the pipe 3 is composed of multiple sections spliced ​​together. As the silo surface continuously rises during concrete pouring, to ensure the height between the lower valve 6 and the silo surface, some sections of the pipe 3 and its support structure 10 can be removed and the lower valve 6 reinstalled. A camera can be installed at the lower valve 6, and the camera is connected to the control center via signal transmission.

[0050] Example 2:

[0051] A method for conveying roller-compacted concrete, using the roller-compacted concrete conveying system of Example 1, includes the following steps:

[0052] S1. The control center sends a closing signal to the upper valve 5 and the lower valve 6, closing the upper valve 5 and the lower valve 6;

[0053] S2. The control center sends an opening signal to the first concrete transport truck 7 and the first silo transfer truck 8. After receiving the opening signal, the first concrete transport truck 7 arrives at the upper unloading platform 1 and unloads the concrete into the storage hopper 4. After receiving the opening signal, the first silo transfer truck 8 arrives at the lower receiving platform 2 and is located below the lower valve 6.

[0054] S3. After the material detection mechanism detects that the concrete in the first concrete truck 7 has been unloaded, it sends a signal to the control center that the unloading is complete. After receiving the signal, the control center sends an opening signal to the upper valve 5 to open the upper valve 5, so that the pipeline 3 is filled with concrete. It then sends a signal to the first concrete truck 7 that the unloading is complete and a signal to the second concrete truck 7 that it is ready to unload.

[0055] S4. After the material level detection mechanism detects that the material level in the storage hopper 4 remains unchanged, it sends a full material signal to the control center. After receiving the full material signal, the control center sends a keep-open signal to the upper valve 5 to keep the upper valve 5 open. In addition, after receiving the arrival signal of the first silo transfer car 8, the control center sends an opening signal to the lower valve 6 to open the lower valve 6 and discharge the material to the first silo transfer car 8 below.

[0056] S5. When the material level detection mechanism detects that the material level in the storage hopper 4 has dropped by a predetermined amount, the control center sends a closing signal to the lower valve 6 to close the lower valve 6, and sends a receiving completion signal to the first silo transfer car 8 and a preparing to receive signal to the second silo transfer car 8.

[0057] S6. Following the signal instructions from the control center, the subsequent material transfer vehicle 8 goes to the lower valve 6 to receive material. Following the signal instructions from the control center, several concrete transport vehicles 7 unload material into the storage hopper 4, keeping the pipeline 3 full during the material discharge process.

[0058] In this roller-compacted concrete conveying method, the control center, based on the material level signal in the storage hopper 4 fed back by the material level detection mechanism, instructs the concrete transport vehicle 7 to replenish the storage hopper 4, keeping the pipeline 3 full. This makes the concrete conveying rate in the pipeline 3 easy to control, allowing concrete to be unloaded in a stable fluid state, minimizing aggregate segregation and VC value loss, ensuring concrete quality, and preventing pipe bursts and blockages during unloading. Furthermore, the commands for the concrete transport vehicle 7 and the silo transfer vehicle 8 are coordinated and controlled by the control center based on signals from the material level detection mechanism and the material detection mechanism, resulting in good coordination, a high degree of automation, and high overall efficiency.

[0059] Furthermore, in this embodiment, during the material feeding process of opening the lower valve 6, when the material level detection mechanism detects that the material level in the storage hopper 4 has dropped to zero, it sends a no-feed signal to the control center. Upon receiving the no-feed signal, the control center sends a closing signal to the upper valve 5, thus closing the upper valve 5. The top of the pipe 3 is provided with an air hole 31. During the material discharge process after closing the upper valve 5, external gas enters the pipe 3 through the air hole 31, preventing a vacuum from forming inside the pipe 3 and ensuring smooth discharge of concrete from the pipe 3.

[0060] Occasionally, during construction, there are issues with the timely delivery of materials. As the material transfer vehicle 8 is waiting to receive materials under the lower valve 6, there are no subsequent concrete transport vehicles 7 unloading into the storage hopper 4 on the upper unloading platform 1. At this time, after opening the lower valve 6, all vibrators 9 are turned on. When the material level detection mechanism detects that the material level in the storage hopper 4 has dropped to zero, the upper valve 5 is closed, so that the pipeline 3 continues to maintain a semi-vacuum state, and the concrete continues to slide down in a stable fluid state.

[0061] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A roller-compacted concrete conveying system, comprising an upper unloading platform (1), a lower receiving platform (2), and a pipeline (3), wherein the pipeline (3) is disposed between the upper unloading platform (1) and the lower receiving platform (2), characterized in that: The upper unloading platform (1) is equipped with a storage hopper (4). The upper end of the pipe (3) is connected to the storage hopper (4) through an upper valve (5). The lower end of the pipe (3) is equipped with a lower valve (6). The storage hopper (4) is equipped with a material level detection mechanism. The roller-compacted concrete conveying system also includes a concrete transport vehicle (7), a silo transfer vehicle (8), a control center, and a material detection mechanism for detecting the amount of material in the concrete transport vehicle (7). The material level detection mechanism, the upper valve (5), the lower valve (6), the concrete transport vehicle (7), the silo transfer vehicle (8), and the material detection mechanism are all connected to the control center. The control center sends information to the control center. The upper valve (5) and lower valve (6) send a closing signal to close the upper valve (5) and lower valve (6); the control center sends an opening signal to the first concrete transport truck (7) and the first silo transfer truck (8). After receiving the opening signal, the first concrete transport truck (7) arrives at the upper unloading platform (1) and unloads the concrete into the storage hopper (4). After receiving the opening signal, the first silo transfer truck (8) arrives at the lower receiving platform (2) and is located below the lower valve (6); the material detection mechanism detects that the concrete in the first concrete transport truck (7) has been unloaded and sends an unloading completion signal to the control center. The control center receives the signal. Upon receiving the unloading completion signal, the upper valve (5) is opened, filling the pipeline (3) with concrete. The unloading completion signal is then sent to the first concrete truck (7), and the second concrete truck (7) is prepared to unload. After the material level detection mechanism detects that the material level in the storage hopper (4) remains unchanged, it sends a full material signal to the control center. Upon receiving the full material signal, the control center sends a keep-open signal to the upper valve (5), keeping it open. Furthermore, upon receiving the arrival signal of the first silo transfer truck (8), the control center sends an opening signal to the lower valve (6), opening the pipeline. Open the valve (6) and discharge the material to the first hopper transfer vehicle (8) below; when the material level detection mechanism detects that the material level in the storage hopper (4) has dropped by a predetermined amount, the control center sends a closing signal to the lower valve (6), closes the lower valve (6), and sends a receiving completion signal to the first hopper transfer vehicle (8) and a ready receiving signal to the second hopper transfer vehicle (8); the subsequent hopper transfer vehicles (8) receive the material under the signal instruction of the control center one after another, and the subsequent concrete transport vehicles (7) unload the material into the storage hopper (4) one after another under the signal instruction of the control center, so that the pipeline (3) remains full during the material discharge process.

2. The roller-compacted concrete conveying system according to claim 1, characterized in that: The pipe (3) is provided with an air hole (31).

3. The roller-compacted concrete conveying system according to claim 2, characterized in that: An inlet / outlet valve is provided at the air vent (31), and the inlet / outlet valve is connected to the control center information.

4. The roller-compacted concrete conveying system according to claim 1, characterized in that: Vibrators (9) are provided on the pipe (3) and the storage hopper (4), and the vibrators (9) are connected to the control center signal.

5. The roller-compacted concrete conveying system according to any one of claims 1 to 4, characterized in that: The unloading platform (1) is equipped with a limiting mechanism (11) near the storage hopper (4) to block the concrete transport vehicle (7).

6. The roller-compacted concrete conveying system according to any one of claims 1 to 4, characterized in that: The upper valve (5) is a butterfly-shaped arc gate.

7. The roller-compacted concrete conveying system according to any one of claims 1 to 4, characterized in that: The material detection mechanism is located on the feeding side of the storage hopper (4) or on the concrete transport vehicle (7).

8. The roller-compacted concrete conveying system according to any one of claims 1 to 4, characterized in that: The pipe (3) is fixed to the slope wall between the upper unloading platform (1) and the lower receiving platform (2) by a support structure (10).

9. A method for conveying roller-compacted concrete, characterized in that, The process, using the roller-compacted concrete conveying system according to any one of claims 1 to 8, includes the following steps: S1. The control center sends a closing signal to the upper valve (5) and the lower valve (6) to close the upper valve (5) and the lower valve (6); S2. The control center sends an opening signal to the first concrete transport truck (7) and the first silo transfer truck (8). After receiving the opening signal, the first concrete transport truck (7) arrives at the upper unloading platform (1) and unloads the concrete into the storage hopper (4). After receiving the opening signal, the first silo transfer truck (8) arrives at the lower receiving platform (2) and is located below the lower valve (6). S3. After the material detection mechanism detects that the concrete in the first concrete truck (7) has been unloaded, it sends a signal to the control center that the unloading is complete. After receiving the signal that the unloading is complete, the control center sends an opening signal to the upper valve (5) to open the upper valve (5), so that the pipeline (3) is filled with concrete, and sends a signal to the first concrete truck (7) that the unloading is complete and to the second concrete truck (7) that the unloading is ready. S4. After the material level detection mechanism detects that the material level in the storage hopper (4) remains unchanged, it sends a full material signal to the control center. After receiving the full material signal, the control center sends a keep-open signal to the upper valve (5) to keep the upper valve (5) open. After receiving the arrival signal of the first warehouse transfer car (8), the control center sends an opening signal to the lower valve (6) to open the lower valve (6) and discharge the material to the first warehouse transfer car (8) below. S5. When the material level detection mechanism detects that the material level in the storage hopper (4) has dropped by a predetermined amount, the control center sends a closing signal to the lower valve (6), closes the lower valve (6), and sends a receiving completion signal to the first warehouse transfer car (8) and a ready receiving signal to the second warehouse transfer car (8). S6. The subsequent material transfer vehicle (8) goes to the lower valve (6) to receive material under the signal instruction of the control center. Then, several concrete transport vehicles (7) unload material into the storage hopper (4) under the signal instruction of the control center, so that the pipeline (3) remains full during the material discharge process.

10. The method for conveying roller-compacted concrete according to claim 9, characterized in that: During the material feeding process of opening the lower valve (6), when the material level detection mechanism detects that the material level in the storage hopper (4) drops to zero, it sends a no-feed signal to the control center. After receiving the no-feed signal, the control center sends a closing signal to the upper valve (5) to close the upper valve (5).

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