Device and method for automatically transporting and distributing concrete of rock-fill dam panel

Abstract

The invention discloses an automatic transportation-distribution device and method for rock-fill dam panel concrete, the device adopts a spiral stirring roller to continuously stir concrete, prevent initial setting or bleeding and maintain slump stability, the bottom of a stock bin is designed to be an adjustable concrete discharge port in the rotation direction, the concrete is automatically discharged through gravity, and the concrete is automatically conveyed and distributed. Precise putting is realized; automatic panel distribution is achieved through belt conveyor conveying and rail moving, and a rail system parallel to a panel is adopted as a moving system, so that the distribution system can flexibly move in the length direction of the panel; according to the method, the discharging efficiency of a chute and horizontal material distribution is quantified, the slump of concrete, the inclination angle of the chute and the friction coefficient are considered in the conveying capacity of the chute, geometric parameters and power parameters of a belt conveyor are considered in the discharging efficiency of the horizontal material distribution, and the discharging condition of the concrete is monitored in real time; parameters of the chute and the belt conveyor are automatically adjusted through an algorithm, and smooth connection of transportation and paving is ensured.

Description

Technical Field

[0001] The present invention relates to water conservancy and hydropower engineering construction technology, and in particular to a device and method for automatic transportation and distribution of rockfill dam face concrete. Background Art

[0002] In water conservancy and hydropower projects, the construction quality of rockfill dam concrete panels directly impacts the dam's anti-seepage performance and long-term stability. Traditional chute systems, due to distance and height limitations, can easily lead to problems such as segregation, coagulation, and separation during concrete transportation, impacting the concrete's performance and construction quality. Traditional spreading methods often rely on manual operation, resulting in poor spreading accuracy and difficulty ensuring uniform distribution of concrete. This results in substandard surface flatness and density after pouring, increasing the difficulty and cost of subsequent construction. Furthermore, manual spreading and transportation require workers to operate at height or on unstable work surfaces, posing significant safety risks and limiting construction efficiency. Construction technology and equipment suffer from a low level of automation, making real-time monitoring and dynamic adjustment impossible. This makes it difficult to control concrete quality during construction and makes it difficult to meet the requirements of modern construction. Summary of the Invention

[0003] Purpose of the invention: The purpose of the present invention is to provide an automatic conveying and distributing device for rockfill dam panel concrete, which solves the problems of segregation, coagulation and separation during concrete transportation and improves the distribution accuracy and uniformity. Another purpose of the present invention is to provide a method for automatic conveying and distributing rockfill dam panel concrete.

[0004] Technical Solution: The device for automated transportation and distribution of rockfill dam panel concrete described in the present invention includes a chute-cage conveying system, a mobile distribution system, and a concrete distribution control system. The chute-cage conveying system has an adjustable discharge port at the bottom of the cage, which is located above the belt conveyor of the mobile distribution system. Concrete is automatically discharged by gravity and delivered to the belt conveyor. The belt conveyor transports the concrete forward to the distribution silo of the mobile distribution system, and the concrete is controlled by the inclined baffle of the distribution silo to enter the discharge port of the distribution silo. The concrete distribution control system monitors the concrete discharge in real time and adjusts the parameters of the chute and belt conveyor.

[0005] Furthermore, the mobile fabric system also includes rollers and tracks, and the fabric bin can move freely through the rollers and tracks to control the fabric position.

[0006] Furthermore, the angle between the inclined baffle of the material distribution bin and the moving direction of the belt conveyor is in the range of 30-60 degrees.

[0007] Furthermore, the mobile material distribution system also includes cameras installed on both sides of the belt conveyor.

[0008] Furthermore, a spiral stirring roller is provided in the cage.

[0009] The method for automated transportation and distribution of rockfill dam panel concrete of the present invention is implemented by the above-mentioned device for automated transportation and distribution of rockfill dam panel concrete. The method for automated transportation and distribution of rockfill dam panel concrete comprises the following steps:

[0010] (1) The transport truck unloads the concrete into the inlet chute of the chute-cage conveying system; the concrete slides through the chute into the cage silo, and the spiral mixing roller in the cage continuously stirs the concrete; the concrete is automatically discharged by gravity onto the belt conveyor of the mobile distribution system;

[0011] (2) After the mobile concrete distributing system's belt conveyor receives the concrete, it is transported forward to the mobile concrete distributing system's distributing bin, and the concrete is controlled to enter the distributing bin's outlet through the inclined baffle of the distributing bin;

[0012] (3) The camera monitors the concrete discharge in real time and automatically adjusts the parameters of the chute and belt conveyor to ensure smooth connection between transportation and paving.

[0013] Furthermore, the chute discharge rate is

[0014]

[0015] Among them, Q1 is the chute discharge volume, unit is m 3 / s; A is the cross-sectional area of ​​the chute, unit is m 2 ; k1 is the coefficient of concrete actually filling the chute; μ is the friction coefficient; g is the acceleration due to gravity, unit is m / s 2 ; L is the length of the chute, in m; θ is the inclination angle of the chute, in °; ks is the influence coefficient of slump.

[0016] Furthermore, the fabric bin can be freely moved through the roller track system to control the fabric position.

[0017] Furthermore, the output of the fabric machine is

[0018]

[0019] Among them, Q2 is the output of the fabric feeding machine, the unit is m 3 / s; n is the speed of the belt conveyor, in rpm; r is the radius of the driving roller of the belt conveyor, in m; k2 is the concrete shape coefficient, which represents the ratio of the cross-sectional area of ​​the concrete on the belt conveyor to the ideal cross-sectional area; b is the width of the belt conveyor, in m; h is the height of the concrete on the belt conveyor, in m.

[0020] Furthermore, the chute conveying speed v1 satisfies

[0021] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. The device of the present invention is provided with a spiral stirring roller inside the cage to continuously stir the concrete, prevent initial setting or water seepage, and maintain the stability of slump. The bottom of the hopper is designed to be an adjustable concrete discharge port along the rotation direction. The concrete is automatically discharged by gravity and accurately delivered to the belt conveyor; 2. The device of the present invention receives the concrete transported by the cage, and realizes automatic panel distribution through belt conveyor and track movement; 3. The device of the present invention tilts the baffle at 45 degrees to control the concrete from entering the discharge port. The moving system adopts a track system parallel to the panel. This design enables the distribution system to move along the panel. flexibly move in the length direction; 4. High-definition cameras are installed on both sides of the distribution device of the present invention, combined with image recognition algorithms, to analyze the unloading and paving status in real time, timely feed-control the discharge speed of the chute and the distribution efficiency of the horizontal moving distribution machine hopper, and provide instructions for the vibration work; 5. The method of the present invention quantifies the discharge efficiency of the chute and horizontal distribution. The conveying capacity of the chute takes into account the slump of concrete, the inclination of the chute and the friction coefficient, and the discharge efficiency of the horizontal distribution takes into account the geometric parameters and power parameters of the belt conveyor; by real-time monitoring of the discharge of concrete, the parameters of the chute and belt conveyor are automatically adjusted through the algorithm to ensure smooth connection between transportation and paving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation of the inclined baffle;

[0024] Figure 3 Flowchart of the method of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] The device for automated transportation and distribution of concrete for rockfill dam panels described in the present invention includes a chute-cage conveying system, a mobile distribution system, and a concrete distribution control system. The chute-cage conveying system is used to receive incoming concrete from concrete tankers, maintain the working performance of the concrete, and accurately deliver it to the mobile distribution system; the mobile distribution system is used to receive concrete conveyed by the cage and realize automated distribution of the panels through belt conveyor and track movement; the concrete distribution control system is used to quantify the discharge efficiency of the chute and horizontal distribution, monitor the discharge status of concrete in real time, and automatically adjust the parameters of the chute and belt conveyor through an algorithm to ensure a smooth connection between transportation and paving.

[0027] The chute-cage conveying system includes: a chute 1 for receiving concrete from concrete tankers and sliding the concrete into the cage silo; a cage, including a silo 2, a spiral mixing roller 3 and an adjustable discharge port 4. The spiral mixing roller is used to continuously stir the concrete to prevent initial setting or bleeding and maintain slump stability; the adjustable discharge port is used to automatically discharge the concrete by gravity and accurately deliver it to the belt conveyor of the mobile distribution system.

[0028] The mobile concrete distribution system includes: a distribution bin 5 for receiving concrete delivered by the cage; a belt conveyor 8 for horizontally transporting concrete along the length of the panel; a belt motor 9; an inclined baffle designed to be inclined at an angle of 135° perpendicular to the direction of concrete transportation, used to control the entry of concrete into the discharge port 6; a roller and track system, which includes a track 7 and a track motor 10; used to achieve flexible movement of the distribution device; high-definition cameras 11 and 12, installed on both sides of the distribution device, combined with image recognition algorithms, to analyze the unloading and paving status in real time, provide timely feedback to control the discharge speed of the chute and the distribution efficiency of the horizontal mobile distribution machine hopper, and provide instructions for subsequent vibration work.

[0029] The method for automated transportation and distribution of rockfill dam panel concrete of the present invention is implemented by the above-mentioned device for automated transportation and distribution of rockfill dam panel concrete. The method for automated transportation and distribution of rockfill dam panel concrete comprises the following steps:

[0030] (1) The transport truck unloads the concrete into the inlet chute of the chute-cage conveying system; the concrete slides through the chute into the cage silo, and the spiral mixing roller in the cage continuously stirs the concrete; the concrete is automatically discharged by gravity onto the belt conveyor of the mobile distribution system;

[0031] (2) After the belt conveyor of the mobile placing system receives the concrete, it is transported forward to the placing silo of the mobile placing system. The concrete is controlled to enter the discharging port of the placing silo through the inclined baffle of the placing silo. The speed of the belt conveyor is adjustable to achieve quantitative distribution of concrete. The silo can be freely moved through the roller track system to control the placing position.

[0032] (3) The camera monitors the concrete discharge in real time and automatically adjusts the parameters of the chute and belt conveyor to ensure smooth connection between transportation and paving.

[0033] Furthermore, the chute discharge rate is

[0034]

[0035] Among them, Q1 is the chute discharge volume, unit is m 3 / s; A is the cross-sectional area of ​​the chute, unit is m 2; k1 is the coefficient of concrete actually filling the chute; μ is the friction coefficient; g is the acceleration due to gravity, unit is m / s 2 ; L is the length of the chute, in m; θ is the inclination angle of the chute, in °; ks is the influence coefficient of slump.

[0036] Furthermore, the fabric bin can be freely moved through the roller track system to control the fabric position.

[0037] Furthermore, the output of the fabric machine is

[0038]

[0039] Among them, Q2 is the output of the fabric feeding machine, the unit is m 3 / s; n is the speed of the belt conveyor, in rpm; r is the radius of the driving roller of the belt conveyor, in m; k2 is the concrete shape coefficient, which represents the ratio of the cross-sectional area of ​​the concrete on the belt conveyor to the ideal cross-sectional area; b is the width of the belt conveyor, in m; h is the height of the concrete on the belt conveyor, in m.

[0040] Furthermore, the chute conveying speed meets

Claims

1. A device for automated transportation and distribution of concrete for rockfill dam panels, characterized in that: It includes a chute-cage conveying system, a mobile concrete placing system and a concrete placing control system. The chute-cage conveying system has an adjustable discharge port at the bottom of the cage, which is located above the belt conveyor of the mobile concrete placing system. Concrete is automatically discharged by gravity and delivered to the belt conveyor; the belt conveyor transports the concrete forward to the placing silo of the mobile concrete placing system, and the concrete is controlled to enter the discharge port of the placing silo through the inclined baffle of the placing silo; the concrete placing control system monitors the concrete discharge situation in real time and adjusts the parameters of the chute and belt conveyor.

2. The device for automated transportation and distribution of rockfill dam face concrete according to claim 1, characterized in that: The mobile fabric system also includes rollers and tracks, through which the fabric bin can move freely to control the fabric position.

3. The device for automated transportation and distribution of rockfill dam face concrete according to claim 1, characterized in that: The angle between the inclined baffle of the material silo and the moving direction of the belt conveyor is in the range of 30-60 degrees.

4. The device for automated transportation and distribution of rockfill dam face concrete according to claim 2, characterized in that: The mobile material distribution system further comprises cameras, which are installed on both sides of the belt conveyor.

5. The device for automated transportation and distribution of rockfill dam face concrete according to claim 2, characterized in that: A spiral stirring roller is provided in the twisting cage.

6. A method for automated transportation and distribution of rockfill dam face concrete, characterized in that: The method is realized by the device for automatic transportation and distribution of rockfill dam panel concrete according to any one of claims 1 to 5, and the method comprises the following steps: (1) The transport truck unloads the concrete into the inlet chute of the chute-cage conveying system; the concrete slides through the chute into the cage silo, and the spiral mixing roller in the cage continuously stirs the concrete; the concrete is automatically discharged by gravity onto the belt conveyor of the mobile distribution system; (2) After the mobile concrete distributing system's belt conveyor receives the concrete, it is transported forward to the mobile concrete distributing system's distributing bin, and the concrete is controlled to enter the distributing bin's outlet through the inclined baffle of the distributing bin; (3) The camera monitors the concrete discharge in real time and automatically adjusts the parameters of the chute and belt conveyor to ensure smooth connection between transportation and paving.

7. The method for automated transportation and distribution of rockfill dam face concrete according to claim 6, characterized in that: The chute discharge rate is Among them, Q1 is the chute discharge volume, unit is m 3 / s; A is the cross-sectional area of ​​the chute, unit is m 2 ; k1 is the coefficient of concrete actually filling the chute; μ is the friction coefficient; g is the acceleration due to gravity, unit is m / s 2 ; L is the length of the chute, in m; θ is the inclination angle of the chute, in °; ks is the influence coefficient of slump.

8. The method for automated transportation and distribution of rockfill dam face concrete according to claim 7, characterized in that: The fabric bin can be moved freely through the roller track system to control the fabric position.

9. The method for automated transportation and distribution of rockfill dam face concrete according to claim 8, characterized in that: The output of the fabric machine is Among them, Q2 is the output of the fabric feeding machine, the unit is m 3 / s; n is the speed of the belt conveyor, in rpm; r is the radius of the driving roller of the belt conveyor, in m; k2 is the concrete shape coefficient, which represents the ratio of the cross-sectional area of ​​the concrete on the belt conveyor to the ideal cross-sectional area; b is the width of the belt conveyor, in m; h is the height of the concrete on the belt conveyor, in m.

10. The method for automated transportation and distribution of rockfill dam face concrete according to claim 9, characterized in that: Chute conveying speed v1 satisfies

Images