Intelligent control device for concrete beam prestressed steel beam duct construction

Abstract

The utility model provides a concrete beam prestressed steel beam duct construction intelligent control device which comprises a raw material feeding mechanism, a water supply mechanism, a stirring mechanism, a transition mechanism, a mud jacking mechanism and a control mechanism, and intelligent weighing devices are arranged at feeding ports and discharging ports of a cement tank and a plurality of admixture tanks in the raw material feeding mechanism; a water flow controller is arranged at a water outlet of a water supply pump in the water supply mechanism; a discharge port of the cement tank, discharge ports of the external admixture tanks and a water outlet of the water feeding pump are all communicated with the interior of the stirrer; feed valves and discharge valves of feed ports and discharge ports of the cement tank and the admixture tanks are electrically connected with the intelligent weighing device, and the intelligent hydraulic press is electrically connected with the intelligent mud jacking controller. The raw material feeding amount is controlled through intelligent weighing, the water flow controller controls the water inlet amount so as to intelligently control the raw material ratio, and the quality of slurry pumped into the corrugated pipe is ensured; the grouting construction efficiency is optimized, and the requirements of large-scale construction projects are met.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent bridge construction, and in particular to an intelligent control device for the construction of prestressed steel bundle ducts in concrete beams. Background Art

[0002] Prestressed concrete beams are widely used in bridge engineering, benefiting from their ability to significantly increase bridge spans and serviceability. Grouting the prestressed steel strand ducts after prestressing is complete is a critical process in prestressed concrete beam construction. Its purpose is to enhance the corrosion resistance of the prestressed steel strands, tightly bond the strands to the concrete beam, and strengthen the integrity of the prestressed structure. The quality of grouting directly impacts the safety and durability of prestressed concrete beam structures, making quality control of grouting crucial.

[0003] However, the traditional grouting construction of prestressed steel tendon channels has many shortcomings, mainly as follows:

[0004] During the grouting material preparation process, it is difficult to precisely control the mixture, resulting in deviations between the quality of the prepared grouting material and the designed mix ratio;

[0005] Pre-configured grouting materials will lead to waste after an emergency stop;

[0006] Large-volume mixing operations can easily lead to uneven mixing of the slurry, affecting the density and strength of the slurry;

[0007] Traditional operations have certain difficulties in controlling the flow rate and pressure of the grouting material. Usually, the main focus is on controlling the pressure. In curved locations or very long channels, controlling the grouting fluidity solely by the pressure can easily lead to unstable flow rate and pressure, resulting in incomplete filling of the grout in the channel, forming voids or defects.

[0008] Manual operation is inefficient and cannot meet the high time and quality requirements of large-scale construction projects. Summary of the Invention

[0009] The present application provides an intelligent control device for the construction of prestressed steel bundle ducts in concrete beams, which can solve the technical problems of uneven grouting, inaccurate flow rate and pressure control in traditional prestressed steel bundle duct grouting construction.

[0010] The present application provides an intelligent control device for the construction of prestressed steel bundle ducts in concrete beams, comprising:

[0011] A raw material feeding mechanism includes a cement tank and multiple external admixture tanks, wherein the cement tank and the multiple external admixture tanks are respectively provided with a feed valve and a discharge valve at the feed inlet and the discharge outlet, and the feed valve and the discharge valve are both provided with an intelligent weighing device;

[0012] The water supply mechanism comprises a water supply pump, wherein a water flow controller is provided at the water outlet of the water supply pump;

[0013] The stirring mechanism includes a stirrer, wherein the discharge port of the cement tank, the discharge ports of the plurality of external admixture tanks, and the water outlet of the water pump are all connected to the interior of the stirrer;

[0014] A transition mechanism includes a transition bin, wherein the feed port of the transition bin is connected to the discharge port of the stirrer;

[0015] The grouting mechanism includes an intelligent hydraulic device, wherein the feed port of the intelligent hydraulic device is connected to the discharge port of the transition chamber, and the slurry discharged from the discharge port of the transition chamber is driven by the intelligent hydraulic device to be grouted into the grouting pipeline;

[0016] The control mechanism includes an intelligent weighing controller and an intelligent grouting controller. The feed valve and the discharge valve are both electrically connected to the intelligent weighing device, and the intelligent hydraulic pressure is electrically connected to the intelligent grouting controller.

[0017] In combination with the first aspect, in one embodiment, an isolation plug is installed on the communication channel between the agitator and the transition bin.

[0018] In combination with the first aspect, in one embodiment, the stirrer is equipped with stirring blades, the stirring blades are driven by a motor, and a speed controller is installed on the motor.

[0019] In combination with the first aspect, in one embodiment, a large particle impurity filtering device is installed in the transition bin near the feed inlet.

[0020] In combination with the first aspect, in one embodiment, the large particle impurity filtering device includes a high-density filter screen and a passive dispersion aluminum plate arranged in upper and lower layers, and the high-density filter screen and the passive dispersion aluminum plate are coaxially fixed on the circular inner wall of the transition bin.

[0021] In combination with the first aspect, in one embodiment, the large particle impurity filtering device includes a filter screen and a dispersion aluminum plate arranged in upper and lower layers, and the filter screen and the dispersion aluminum plate are coaxially fixed to the circular inner wall of the transition bin.

[0022] In combination with the first aspect, in one embodiment, the intelligent hydraulic device includes a hydraulic pump and a flow rate controller, the hydraulic pump is used for grouting and pumping slurry, and the flow rate controller is electrically connected to the hydraulic pump to control the speed of the hydraulic pump pumping the slurry.

[0023] In combination with the first aspect, in one embodiment, a slurry flow velocity meter is connected to the grouting pipe.

[0024] In combination with the first aspect, in one embodiment, a temperature sensor is installed in the intelligent hydraulic press.

[0025] In combination with the first aspect, in one embodiment, the intelligent hydraulic press is connected to a pressure sensor.

[0026] In combination with the first aspect, in one embodiment, the stirring blade is made of a wear-resistant material.

[0027] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0028] The intelligent grouting device for prestressed channels of concrete beams provided by the utility model controls the raw material feed amount through intelligent weighing, controls the water inlet amount through a water flow controller, and intelligently controls the raw material ratio to ensure the quality of the slurry pumped into the corrugated pipe.

[0029] Through intelligent material loading and unloading, intelligent control of water intake and intelligent grouting, the efficiency of grouting construction is optimized to meet the needs of large-scale construction projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 This is a structural schematic diagram of the intelligent control device for prestressed steel bundle duct construction in concrete beams provided by the utility model.

[0032] In the figure: 1. Cement tank; 2. First external admixture tank; 3. Second external admixture tank; 41. Intelligent weighing device; 42. Feed valve; 43. Discharge valve; 44. Intelligent weighing controller; 45. Water pump; 46. Water flow controller; 6. Agitator; 61. Speed ​​controller; 62. Mixing blade; 7. Isolation plug; 8. Transition chamber; 81. Passive dispersion aluminum plate; 82. High-density filter; 9. Intelligent hydraulic press; 91. Intelligent grouting control panel; 92. Grouting pressure gauge; 93. Slurry flow velocity meter; 10. Grouting pipeline. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Please refer to Figure 1 , the present application provides an intelligent control device for the construction of prestressed steel bundle channels in concrete beams, comprising a raw material feeding mechanism, a water supply mechanism, a stirring mechanism, a transition mechanism, a grouting mechanism and a control mechanism; wherein the raw material feeding mechanism comprises a cement tank 1 and a plurality of external admixture tanks, the cement tank 1 being used to store cement and pumping the cement into the stirrer 6 through a delivery pump, a feed valve 42 and a discharge valve 43 being respectively provided at the feed port and the discharge port of the cement tank 1 and the plurality of external admixture tanks, and an intelligent weighing device 41 being respectively provided at the feed valve 42 and the discharge valve 43, for controlling the feed amount and discharge amount of cement in the cement tank 1 and the external admixture in the external admixture tank; the water supply mechanism comprises a water supply pump 45, and a water flow controller 46 is provided at the water outlet of the water supply pump 45 for controlling the water intake; the stirring mechanism comprises a stirrer 6, The discharge port of the cement tank 1, the discharge ports of the multiple external admixture tanks and the water outlet of the water pump 45 are all connected to the interior of the mixer 6, and the cement, external admixture and water are mixed into slurry in the mixer 6; the transition mechanism includes a transition bin 8, and the feed port of the transition bin 8 is connected to the discharge port of the mixer 6; the grouting mechanism includes an intelligent hydraulic press 9, and the feed port of the intelligent hydraulic press 9 is connected to the discharge port of the transition bin 8. The slurry coming out of the discharge port of the transition bin 8 is driven by the intelligent hydraulic press 9 to enter the grouting pipe 10, and then transported to the target grouting object through the grouting pipe 10; the control mechanism includes an intelligent weighing controller 44 and an intelligent grouting controller, and the feed valve 42 and the discharge valve 43 are both electrically connected to the intelligent weighing device 41, and the intelligent hydraulic press 9 is electrically connected to the intelligent grouting controller.

[0035] The utility model provides an intelligent control device for grouting construction of prestressed steel bundle channels in concrete beams. The device ensures the density and quality of grouting by intelligently controlling the inflow and outflow of raw materials, the water supply, and the raw material ratio. The device optimizes construction efficiency and meets the needs of large-scale construction projects by intelligently feeding and discharging materials, intelligently controlling the water supply, and intelligent grouting. The device also enhances structural safety and durability and ensures the stability and reliability of the grouting process.

[0036] In one embodiment, the number of the external admixture tanks is two, the first external admixture tank 2 is used for weighing and storing fly ash, and the second external admixture tank 3 is used for weighing and storing slag powder.

[0037] In a specific embodiment, the tops of the cement tank 1 and the two external admixture tanks are all equipped with intelligent weighing devices 41, which automatically weigh the mass of cement, fly ash and slag powder entering the cement tank 1 and the two external admixture tanks, and calculate and set the mass limit value. When the limit value is reached, the feed valve 42 automatically closes to stop the injection of raw materials; further, the cement tank 1, the two external admixture tanks and the bottom are all equipped with intelligent weighing devices 41, and the mass limit value is set according to the calculation. Before the limit value is reached, the discharge valves 43 at the bottom of the cement tank 1 and the two external admixture tanks are in a closed state, and the valves are automatically opened after the set value is reached, and the raw materials enter the mixer 6 under the action of gravity. When the intelligent weighing device 41 at the bottom displays 0, the corresponding discharge valves 43 are automatically closed. After an interval of 3 minutes, the stirring rod can be manually started to start stirring cement, fly ash and slag powder.

[0038] In one embodiment, the cement tank 1 and the feed valves 42 of the feed port and the discharge valves 43 of the discharge port of the multiple external admixture tanks have automatic switching functions, and the intelligent weighing device 41 is associated with the switch control system of each tank outlet to control the automatic opening and closing of the tank port.

[0039] In one embodiment, the water pump 45 is connected to the top of the stirrer to supply water to the slurry.

[0040] In one embodiment, the stirrer 6 is provided with a stirring blade 62 , which is driven by a motor. A speed controller 61 is installed on the motor to achieve uniform mixing of the raw materials and prevent sedimentation of the slurry.

[0041] In one embodiment, an isolation plug 7 is installed on the communication channel between the agitator 6 and the transition chamber 8, which is used to manually close the communication channel during an emergency shutdown to prevent the slurry from entering the subsequent grouting channel and causing slurry waste.

[0042] In one embodiment, a large particle impurity filtering device is installed in the transition bin 8 near the feed port; specifically, the large particle impurity filtering device includes a high-density filter screen 82 and a passive dispersion aluminum plate 81 arranged in the upper and lower layers, and the high-density filter screen 82 and the passive dispersion aluminum plate 81 are coaxially fixed on the circular inner wall of the transition bin 8, and the high-density filter screen 82 is used to remove impurities in the slurry, prevent clogging, and ensure the purity of the slurry; preferably, the high-density filter screen 82 is made of high-strength stainless steel to prevent clogging and damage; the dispersion aluminum plate is used to break up the cement mud clumps, further refine the cement slurry, and ensure the uniformity of the slurry.

[0043] In one embodiment, the intelligent hydraulic device 9 includes a hydraulic pump, a flow rate controller, and a feedback system. The hydraulic pump is used to provide the pressure required for grouting. The flow rate controller can monitor the slurry flow rate in real time and adjust the operating parameters of the hydraulic device through the feedback system to maintain the flow rate of the cement slurry pumped by the grouting pump at a reasonable level, avoiding excessive or insufficient flow rates that affect the grouting effect. More specifically, the feedback system includes a slurry flow velocity meter 93 provided on the grouting pipe 10, which is used to detect the flow rate of the slurry in the grouting pipe 10 and to provide feedback to adjust the operating parameters of the hydraulic device based on the detected slurry flow rate.

[0044] In one embodiment, the intelligent grouting controller includes an intelligent grouting control panel 91 .

[0045] Example 1

[0046] An intelligent control device for the construction of prestressed steel bundle ducts in concrete beams comprises a cement tank 1, a water supply pump 45, an agitator 6, a transition chamber 8 and an intelligent hydraulic device 9. The cement tank 1 is used to store cement and pump the cement into the agitator 6 via a delivery pump. A valve is provided in the connecting pipe between the agitator 6 and the cement tank 1 to control the flow of cement. The water supply pump 45 is connected to the top of the agitator 6 to provide the necessary water for the mixing process. The agitator 6 is equipped with a high-speed mixing blade 62, which is driven by a motor. A speed controller 61 is installed on the motor, which can adjust the speed of the mixing blade 62 in real time according to the mixing situation to ensure uniform mixing of the raw materials and prevent the cement slurry from precipitating during the mixing process.

[0047] The transition chamber 8 is located between the agitator 6 and the intelligent hydraulic press 9. A high-precision filter and a passive dispersion aluminum plate 81 are installed at its entrance. The filter removes large particles of impurities from the cement slurry, ensuring its purity. The passive dispersion aluminum plate 81 breaks up cement clumps, further refines the slurry, and ensures its uniformity. The outlet of the transition chamber 8 is connected to the intelligent hydraulic press 9 via a pipe.

[0048] The intelligent hydraulic device 9 includes a hydraulic pump, a flow rate controller, and a feedback system. The hydraulic pump is used to provide the pressure required for grouting. The flow rate controller can monitor the flow rate of the slurry in real time and adjust the operating parameters of the hydraulic device through the feedback system to maintain the flow rate of the cement slurry pumped by the grouting pump at a reasonable level, avoiding excessive or slow flow rates that affect the grouting effect.

[0049] Example 2

[0050] Based on Example 1, the high-speed stirring blades 62 of the stirrer 6 are made of wear-resistant material, further improving the service life of the device and the stirring effect. To enhance the stirring effect, the stirring blades 62 are designed with an optimized blade shape and layout. Through fluid dynamics analysis, the optimal blade angle and arrangement are determined, so that the slurry can be evenly distributed during the stirring process, avoiding the generation of dead corners and eddies, and improving the uniformity of stirring.

[0051] In addition, the stirring blade 62 is also provided with a self-cleaning function. During the stirring process, the special structure of the blade surface can effectively reduce the adhesion of the slurry on the blade surface, keeping the blade clean and in an efficient working state.

[0052] In actual operation, the speed controller 61 in the stirrer 6 can automatically adjust the speed of the stirring blade 62 according to the rheological characteristics of the slurry and working conditions, ensuring that the stirring process is always in the best state.

[0053] Example 3

[0054] Based on Example 1, the intelligent hydraulic press 9 is further equipped with temperature and pressure sensors to monitor the slurry temperature and pressure in real time, ensuring the stability and reliability of the grouting process. Temperature sensors are installed at key points in the transition chamber 8 and the slurry delivery pipeline to detect changes in slurry temperature. Real-time temperature monitoring ensures that the slurry is grouted within the appropriate temperature range, preventing excessively high or low temperatures from affecting slurry performance and grouting results. The grouting pressure gauge 92 of the pressure sensor displays the current grouting pressure value.

[0055] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0057] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An intelligent control device for the construction of prestressed steel bundle ducts in concrete beams, characterized in that: include: A raw material feeding mechanism includes a cement tank and multiple external admixture tanks, wherein the cement tank and the multiple external admixture tanks are respectively provided with a feed valve and a discharge valve at the feed inlet and the discharge outlet, and the feed valve and the discharge valve are both provided with an intelligent weighing device; The water supply mechanism comprises a water supply pump, wherein a water flow controller is provided at the water outlet of the water supply pump; The stirring mechanism includes a stirrer, wherein the discharge port of the cement tank, the discharge ports of the plurality of external admixture tanks, and the water outlet of the water pump are all connected to the interior of the stirrer; A transition mechanism includes a transition bin, wherein the feed port of the transition bin is connected to the discharge port of the stirrer; The grouting mechanism includes an intelligent hydraulic device, wherein the feed port of the intelligent hydraulic device is connected to the discharge port of the transition chamber, and the slurry discharged from the discharge port of the transition chamber is driven by the intelligent hydraulic device to be grouted into the grouting pipeline; The control mechanism includes an intelligent weighing controller and an intelligent grouting controller. The feed valve and the discharge valve are both electrically connected to the intelligent weighing device, and the intelligent hydraulic pressure is electrically connected to the intelligent grouting controller.

2. The intelligent control device for prestressed steel bundle duct construction in concrete beams according to claim 1, characterized in that: An isolation plug is installed on the communication channel between the agitator and the transition bin.

3. The intelligent control device for prestressed steel bundle duct construction in concrete beams according to claim 1, characterized in that: The stirrer is provided with stirring blades, which are driven by a motor, and a speed controller is installed on the motor.

4. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 1, characterized in that: A large particle impurity filtering device is installed in the transition bin near the feed inlet.

5. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 4, characterized in that: The large particle impurity filtering device includes a filter screen and a dispersion aluminum plate arranged in the upper and lower layers, and the filter screen and the dispersion aluminum plate are coaxially fixed on the circular inner wall of the transition bin.

6. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 1, characterized in that: The intelligent hydraulic device includes a hydraulic pump and a flow rate controller. The hydraulic pump is used for grouting and pumping slurry. The flow rate controller is electrically connected to the hydraulic pump and is used to control the speed at which the hydraulic pump pumps slurry.

7. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 1, characterized in that: The grouting pipeline is connected with a slurry flow velocity meter.

8. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 1, characterized in that: A temperature sensor is installed in the intelligent hydraulic machine.

9. The intelligent control device for prestressed steel bundle duct construction in concrete beams according to claim 1, characterized in that: The intelligent hydraulic pressure device is connected to a pressure sensor.

10. The intelligent control device for construction of prestressed steel strand ducts in concrete beams according to claim 3, characterized in that: The stirring blade is made of wear-resistant material.

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