High-viscosity concrete vibrating system

Abstract

The invention provides a high-viscosity concrete vibrating system, and belongs to the technical field of concrete vibrating, and the high-viscosity concrete vibrating system comprises a vibrating cylinder, a vibrating rod, a driving mechanism, a transmission mechanism, a fixing frame, a damping assembly, an adjusting assembly, a control panel and a sealing cover; the vibrating barrel is of a cylindrical structure, an opening is formed in the top of the vibrating barrel, and the bottom of the vibrating barrel is in a closed state; the vibrating rod is cylindrical, the diameter of the vibrating rod is smaller than the inner diameter of the vibrating barrel, and the vibrating rod is vertically arranged in the vibrating barrel; the driving mechanism comprises a motor, a motor base and a power line, the motor base is fixedly installed above the vibrating cylinder, the motor is fixed to the motor base through bolts, the power line is electrically connected with the motor, and the problem that the high-viscosity concrete vibrating requirement cannot be met in the prior art can be effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete vibration, and in particular relates to a high-viscosity concrete vibration system. Background Art

[0002] As one of the most widely used basic materials in construction projects, the performance of concrete has an important impact on the quality of the entire project. A key link in the concrete construction process is concrete vibration. Vibration can effectively eliminate bubbles in concrete, promote the full combination of aggregate and paste, and improve the strength and density of concrete.

[0003] Traditional concrete vibration mainly relies on manual operation, using handheld electric or gasoline-driven vibrators. This method is labor-intensive, easily causes local damage to concrete, and is difficult to meet the vibration needs of large-volume concrete. With the continuous development of construction projects, some automated vibration equipment has emerged, such as vibration trolleys and vibration beams. These devices drive the vibrating head to move back and forth on the concrete surface through a motor, which can effectively improve the vibration efficiency. However, for some concrete with high viscosity, the vibration effect of these devices is not ideal, and bubbles are often unable to be completely eliminated, and the concrete density cannot reach the ideal state.

[0004] For concrete with high viscosity, a more effective vibration method is usually required. A common practice is to use high-frequency vibration equipment to enhance the fluidity of concrete and promote the full discharge of bubbles. However, this equipment has a complex structure, high cost, and is not conducive to the flatness of the concrete surface. Another method is to use stirring vibration, using stirring blades to stir the concrete in the vibration barrel, and cooperate with the up and down movement of the vibration rod to improve the vibration effect. However, this equipment usually cannot accurately control the vibration parameters and is difficult to automatically optimize according to different concrete characteristics.

[0005] In summary, the existing concrete vibration technology still has some problems and cannot fully meet the vibration requirements of high-viscosity concrete. Developing a high-viscosity concrete vibration system with a simple structure, good vibration effect, and automatic optimization of vibration parameters has become the technical development direction in this field. Summary of the invention

[0006] The present invention proposes a high-viscosity concrete vibrating system, which has a simple structure and stable performance, and can effectively solve the problem that the prior art cannot meet the demand for high-viscosity concrete vibration.

[0007] The present invention is achieved in that:

[0008] The present invention provides a high-viscosity concrete vibrating system, which includes: a vibrating cylinder, a vibrating rod, a driving mechanism, a transmission mechanism, a fixing frame, a shock-absorbing assembly, an adjusting assembly, a control panel and a sealing cover; the vibrating cylinder is a cylindrical structure, the top of the vibrating cylinder is provided with an opening, and the bottom of the vibrating cylinder is in a closed state; the vibrating rod is cylindrical, the diameter of the vibrating rod is smaller than the inner diameter of the vibrating cylinder, and the vibrating rod is vertically arranged in the vibrating cylinder; the driving mechanism includes a motor, a motor seat and a power line, the motor seat is fixedly mounted above the vibrating cylinder, the motor is fixed to the motor seat by bolts, and the power line is electrically connected to the motor; the transmission mechanism includes a driving gear, a rack and a transmission shaft, the driving gear is fixedly mounted on the output shaft of the motor, the rack is fixedly mounted on the upper end of the transmission shaft, the driving gear is meshed with the rack, the lower end of the transmission shaft is fixedly connected to the upper end of the vibrating rod, and the transmission shaft is slidably connected to the vibrating cylinder; the fixing frame includes a The cam is an angular channel that is fixedly connected to the bottom of the four support columns, and the cam is connected to the bottom of the four support columns by a spring, a screw bolt and a control key.

[0009] The technical effects of a high-viscosity concrete vibration system provided by the present invention are as follows: The present invention proposes a high-viscosity concrete vibration system, which has a simple structure and stable performance, and can effectively solve the problem that the existing technology cannot meet the vibration needs of high-viscosity concrete.

[0010] First of all, the vibration system adopts a unique vibration mechanism design. A vibration rod is provided in the vibration cylinder, and the driving mechanism drives the vibration rod to reciprocate up and down to achieve effective vibration of the concrete. The inner wall of the vibration cylinder is provided with an annular protrusion, which cooperates with the annular groove on the outer wall of the vibration rod to effectively enhance the vibration effect. At the same time, the bottom of the vibration rod is provided with a conical head, and the outer wall has a spiral convex ridge, which can further promote the flow of concrete and the discharge of bubbles.

[0011] Secondly, the system adopts an optimized shock-absorbing mechanism design. The base is connected to the vibrating cylinder through springs and shock-absorbing pads, which can effectively absorb vibration shock and protect the equipment structure from damage. At the same time, a limit ring is provided to limit the horizontal displacement of the vibrating cylinder, further improving the stability of the system.

[0012] Thirdly, the system is equipped with an intelligent control system. The vibration frequency and time can be adjusted through the control panel to meet the vibration requirements of concrete with different viscosities. At the same time, the system has a built-in vibration optimization module that can automatically adjust the vibration parameters according to the viscosity and liquid level of the concrete to obtain the best vibration effect. This automatic optimization function is the first of its kind in existing vibration equipment.

[0013] In addition, the system also has a stirring function. A spiral stirring blade is installed under the sealing cover, which can stir the concrete during the vibration process and further promote the discharge of bubbles. At the same time, a guide groove is provided in the vibrating cylinder, which cooperates with the stirring blade to improve the fluidity of the concrete.

[0014] In general, this high-viscosity concrete vibration system integrates a number of innovative technologies and can effectively solve the problem that existing vibration equipment cannot meet the vibration needs of high-viscosity concrete. It not only has good vibration effect and simple operation, but also can automatically adjust the vibration parameters according to actual conditions, greatly improving work efficiency. The application of this system will bring significant economic and social benefits to construction engineering.

[0015] On the basis of the above technical solution, a high viscosity concrete vibrating system of the present invention can also be improved as follows:

[0016] Among them, a plurality of annular protrusions are provided on the inner wall of the vibrating cylinder, and the plurality of annular protrusions are evenly distributed along the axial direction of the vibrating cylinder; a plurality of annular grooves are provided on the outer wall of the vibrating rod, and the plurality of annular grooves correspond one-to-one to the plurality of annular protrusions; when the vibrating rod reciprocates up and down in the vibrating cylinder, the annular protrusions and the annular grooves cooperate with each other to enhance the vibration effect.

[0017] Furthermore, a conical head is provided at the bottom of the vibrating rod, and the bottom diameter of the conical head is larger than the diameter of the vibrating rod; the outer surface of the conical head is provided with a plurality of spiral ridges, and the plurality of spiral ridges are evenly distributed along the axial direction of the conical head; the conical head is detachably connected to the bottom end of the vibrating rod by a threaded connection.

[0018] Furthermore, the transmission mechanism also includes a gear box, which is fixedly mounted on the top of the vibrating cylinder; the upper ends of the driving gear, rack and transmission shaft are all placed in the gear box; an oil filling port is provided on the top of the gear box, and a sealing bolt is provided at the oil filling port; an observation window is provided on the side wall of the gear box, and the observation window is made of transparent material.

[0019] Furthermore, the shock absorbing assembly also includes a limit ring, which is fixedly mounted on the outer wall of the vibrating cylinder; the inner diameter of the limit ring is larger than the outer diameter of the connecting plate, and the limit ring is sleeved on the outer side of the connecting plate; a gap is left between the limit ring and the connecting plate to limit the horizontal displacement of the vibrating cylinder.

[0020] Furthermore, the adjustment assembly also includes a locking nut, which is sleeved on the adjusting screw; the locking nut is located above the crossbeam and is used to fix the adjusting screw in an adjusted position; the outer periphery of the adjusting handwheel is provided with scale lines, and a reference line is provided at a corresponding position on the crossbeam to indicate the height position of the vibrating cylinder.

[0021] Furthermore, a feed port is provided at the center position of the upper surface of the sealing cover, and a sealing plug is provided at the feed port; a stirring blade is fixedly connected to the lower surface of the sealing cover, and the stirring blade is arranged in a spiral shape; a guide groove matching the stirring blade is provided on the inner wall of the vibrating cylinder, and the guide groove is arranged along the axial direction of the vibrating cylinder.

[0022] Furthermore, the control panel is provided with a power switch, a start button, a stop button, a vibration frequency adjustment knob and a vibration time setting knob; the control panel is provided with a control circuit, which is electrically connected to the motor and is used to control the start and stop, speed and running time of the motor.

[0023] Furthermore, a discharge port is provided at the bottom of the vibrating cylinder, and an electric valve is provided at the discharge port; the electric valve is electrically connected to the control panel for controlling the opening and closing of the discharge port; a liquid level sensor is also provided on the outer wall of the vibrating cylinder, and the liquid level sensor is electrically connected to the control panel for detecting the liquid level height of the concrete in the vibrating cylinder.

[0024] The control chip is also included, and the control chip is electrically connected to the motor, the liquid level sensor and the electric valve. The control chip is provided with a vibration optimization module, and the vibration optimization module is used to automatically adjust the vibration parameters according to the viscosity and liquid level of the concrete; the vibration optimization module performs the following steps:

[0025] S10, receiving concrete liquid level height data sent by the liquid level sensor;

[0026] S20, determining the current concrete filling degree according to the liquid level height data;

[0027] S30, obtaining preset concrete viscosity parameters;

[0028] S40, selecting an initial vibration frequency and a vibration time from a pre-established vibration parameter database according to the concrete filling degree and viscosity parameters;

[0029] S50, starting the motor and performing a vibration operation according to the initial vibration frequency and vibration time;

[0030] S60, after the vibration operation is completed, the liquid level sensor data is obtained again to calculate the concrete settlement degree;

[0031] S70, adjusting the vibration frequency and vibration time according to the degree of settlement, and generating optimized vibration parameters;

[0032] S80. Repeat the vibration operation using the optimized vibration parameters until a preset settlement target or a maximum number of vibrations is reached.

[0033] In step S20, the calculation formula of concrete filling degree is as follows:

[0034] Where F is the concrete filling degree, and its value range is [ 0,1 ] ; h is the current liquid level height (m); H is the total height of the vibrating cylinder (m); α is the filling coefficient, the default value is 0.2; β is the time decay coefficient, the default value is 0.1min -1 ; t is the vibration time (min); ε1 is the error term, which follows the normal distribution N(0,0.01 2 ).

[0035] Parameter acquisition method: h is directly measured by the liquid level sensor; H is the design parameter of the vibrating cylinder; α and β are obtained through the following experimental steps: Step 1: Conduct multiple groups of vibration experiments at different filling heights; Step 2: Record the vibration time and final filling degree of each group of experiments; Step 3: Use the nonlinear least squares method to fit the values ​​of α and β.

[0036] In step S30, the calculation formula of the concrete viscosity parameter is as follows: μ = μ0·(1+k T ·(T-T0))·(1+k w ·(w-w0))+ε2;

[0037] Where, μ is the concrete viscosity (Pa·s); μ0 is the reference viscosity, the default value is 500Pa·s; k T is the temperature influence coefficient, the default value is 0.02℃ -1 ; T is the current temperature (℃); T0 is the reference temperature, which is 20℃; k w is the water content influence coefficient, the default value is 0.05; w is the current water content (%); w0 is the reference water content, which is 10%; ε2 is the error term, which follows the normal distribution N(0,10 2 ).

[0038] Parameter acquisition method: T is obtained by measuring with a temperature sensor; w is calculated by pre-determined concrete mix ratio; k T and k w The experimental steps are as follows: Step 1: Prepare concrete samples with different temperatures and water contents; Step 2: Use a rotational viscometer to measure the viscosity of each sample; Step 3: Use multiple linear regression analysis to obtain kT and k w The value of .

[0039] In step S40, the calculation formulas for the initial vibration frequency and vibration time are as follows: f = f0·(1+a1·F+a2·μ)+ε3; t = t0·(1+b1·F+b2·μ)·+ε4;

[0040] Where, f is the initial vibration frequency (Hz); f0 is the reference vibration frequency, the default value is 50Hz; t is the initial vibration time (s); t0 is the reference vibration time, the default value is 30s; a1, a2, b1, b2 are unknown coefficients; F is the concrete filling degree; μ is the concrete viscosity (Pa·s); ε3 and ε4 are error terms, both of which obey the normal distribution n(0,1 2 ).

[0041] Parameter acquisition method: a1, a2, b1, b2 are obtained through the following steps: Step 1: Conduct multiple groups of vibration experiments with different filling degrees and viscosities; Step 2: Record the optimal vibration frequency and time for each group of experiments; Step 3: Use multiple linear regression analysis to obtain the coefficient value.

[0042] In step S60, the calculation formula for the degree of concrete settlement is as follows:

[0043] Where S is the degree of settlement, and its value range is [ 0,1 ] ; h0 is the height of concrete before vibration (m); h1 is the height of concrete after vibration (m); λ is the settlement time constant, the default value is 0.05s -1 ; t is the vibration time (s); ε5 is the error term, which follows the normal distribution N(0,0.01 2 ).

[0044] Parameter acquisition method: h0 and h1 are directly measured by the liquid level sensor; λ is obtained through the following experimental steps: Step 1: Conduct multiple groups of experiments with different vibration times; Step 2: Record the initial height, final height and vibration time of each group of experiments; Step 3: Use nonlinear least squares method to fit and get the value of λ.

[0045] In step S70, the optimized vibration parameter calculation formula is as follows: new =f·(1+c1·(S target -S))+ε6;t new =t·(1+c2·(S target -S))+ε7;

[0046] In the formula, f new is the optimized vibration frequency (Hz); tnew is the optimized vibration time (s); f and t are the initial vibration frequency and time; c1, c2 are adjustment coefficients; S target is the target settlement degree, the default value is 0.95; S is the actual settlement degree; ε6 and ε7 are error terms, both of which obey the normal distribution N(0,0.5 2 ).

[0047] Parameter acquisition method: c1 and c2 are obtained through the following steps: Step 1: Conduct multiple groups of vibration experiments with different initial parameters; Step 2: Record the initial parameters, actual settlement degree and final optimal parameters of each group of experiments; Step 3: Use linear regression analysis to obtain the values ​​of c1 and c2.

[0048] Compared with the prior art, the beneficial effects of a high-viscosity concrete vibration system provided by the present invention are as follows: first, the vibration system adopts a unique vibration mechanism design. A vibration rod is provided in the vibration cylinder, and the driving mechanism drives the vibration rod to reciprocate up and down to achieve effective vibration of the concrete. An annular protrusion is provided on the inner wall of the vibration cylinder, which cooperates with the annular groove on the outer wall of the vibration rod, which can effectively enhance the vibration effect. At the same time, a conical head is provided at the bottom of the vibration rod, and a spiral convex ridge is provided on the outer wall, which can further promote the flow of concrete and the discharge of bubbles.

[0049] Secondly, the system adopts an optimized shock-absorbing mechanism design. The base is connected to the vibrating cylinder through springs and shock-absorbing pads, which can effectively absorb vibration shock and protect the equipment structure from damage. At the same time, a limit ring is provided to limit the horizontal displacement of the vibrating cylinder, further improving the stability of the system.

[0050] Thirdly, the system is equipped with an intelligent control system. The vibration frequency and time can be adjusted through the control panel to meet the vibration requirements of concrete with different viscosities. At the same time, the system has a built-in vibration optimization module that can automatically adjust the vibration parameters according to the viscosity and liquid level of the concrete to obtain the best vibration effect. This automatic optimization function is the first of its kind in existing vibration equipment.

[0051] In addition, the system also has a stirring function. A spiral stirring blade is installed under the sealing cover, which can stir the concrete during the vibration process and further promote the discharge of bubbles. At the same time, a guide groove is provided in the vibrating cylinder, which cooperates with the stirring blade to improve the fluidity of the concrete.

[0052] In general, this high-viscosity concrete vibration system integrates a number of innovative technologies and can effectively solve the problem that existing vibration equipment cannot meet the vibration needs of high-viscosity concrete. It not only has good vibration effect and simple operation, but also can automatically adjust the vibration parameters according to actual conditions, greatly improving work efficiency. The application of this system will bring significant economic and social benefits to construction engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0054] Figure 1 It is a front view of a high viscosity concrete vibration system;

[0055] Figure 2 It is a schematic diagram of the internal structure of a high viscosity concrete vibration system;

[0056] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0057] 10. Vibrating cylinder; 11. Protrusion; 20. Vibrating rod; 21. Groove; 22. Conical head; 30. Driving mechanism; 31. Motor; 32. Motor seat; 40. Transmission mechanism; 41. Driving gear; 42. Rack; 43. Transmission shaft; 45. Gear box; 50. Fixed frame; 51. Base; 52. Support column; 53. Crossbeam; 60. Shock-absorbing assembly; 61. Spring; 62. Shock-absorbing pad; 63. Connecting plate; 64. Limiting ring; 70. Adjusting assembly; 71. Adjusting screw; 72. Adjusting hand wheel; 73. Fixed sleeve; 80. Control panel; 90. Sealing cover; 91. Mixing blade; 92. Discharge port. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0059] like Figure 1-2As shown, it is an embodiment of a high viscosity concrete vibrating system provided by the present invention. In this embodiment, it includes: a vibrating cylinder 10, a vibrating rod 20, a driving mechanism 30, a transmission mechanism 40, a fixing frame 50, a shock absorbing assembly 60, an adjusting assembly 70, a control panel 80 and a sealing cover 90; the vibrating cylinder is a cylindrical structure, the top of the vibrating cylinder is provided with an opening, and the bottom of the vibrating cylinder is in a closed state; the vibrating rod is cylindrical, the diameter of the vibrating rod is smaller than the inner diameter of the vibrating cylinder, and the vibrating rod is vertically arranged in the vibrating cylinder; the driving mechanism includes a motor 31, a motor seat 32 and a power cord, the motor seat is fixedly mounted above the vibrating cylinder, the motor is fixed to the motor seat by bolts, and the power cord is electrically connected to the motor; the transmission mechanism includes a driving gear 41, a rack 42, and a transmission shaft 43, the driving gear is fixedly mounted on the output shaft of the motor, the rack is fixedly mounted on the upper end of the transmission shaft, the driving gear is meshed with the rack, the lower end of the transmission shaft is fixedly connected to the upper end of the vibrating rod, and the transmission shaft is connected to the vibrating The cylinder is slidably connected; the fixed frame includes a base 51, a support column 52 and a crossbeam 53. The base is in the shape of a square flat plate. The support columns are vertically fixed at the four corners of the base, and the crossbeam is fixedly connected to the top of the four support columns; the shock-absorbing assembly includes a spring 61, a shock-absorbing pad 62 and a connecting plate 63. One end of the spring is fixedly connected to the base, and the other end of the spring is fixedly connected to the connecting plate. The shock-absorbing pad is arranged between the connecting plate and the bottom of the vibrating cylinder; the adjustment assembly includes an adjusting screw 71, an adjusting handwheel 72 and a fixing sleeve 73. The adjusting screw is vertically arranged, and the lower end of the adjusting screw is fixedly connected to the outer side wall of the vibrating cylinder. The upper end of the adjusting screw passes through the threaded hole on the crossbeam and is fixedly connected to the adjusting handwheel. The fixing sleeve is arranged on the adjusting screw and is fixedly connected to the crossbeam; the control panel 80 is fixedly installed on one of the support columns, and the control panel is electrically connected to the motor; the sealing cover is disc-shaped, and the diameter of the sealing cover is larger than the diameter of the opening of the vibrating cylinder. The sealing cover is rotatably connected to the top edge of the vibrating cylinder through a hinge.

[0060] Among them, in the above technical scheme, a plurality of annular protrusions 11 are provided on the inner wall of the vibrating cylinder, and the plurality of annular protrusions are evenly distributed along the axial direction of the vibrating cylinder; a plurality of annular grooves 21 are provided on the outer wall of the vibrating rod, and the plurality of annular grooves correspond one by one to the plurality of annular protrusions; when the vibrating rod reciprocates up and down in the vibrating cylinder, the annular protrusions and the annular grooves cooperate with each other to enhance the vibration effect.

[0061] Furthermore, in the above technical solution, a conical head 22 is provided at the bottom of the vibrating rod, and the bottom diameter of the conical head is larger than the diameter of the vibrating rod; a plurality of spiral ridges are provided on the outer surface of the conical head, and the plurality of spiral ridges are evenly distributed along the axial direction of the conical head; the conical head is detachably connected to the bottom end of the vibrating rod by a threaded connection.

[0062] Furthermore, in the above technical solution, the transmission mechanism also includes a gear box 45, which is fixedly mounted on the top of the vibrating cylinder; the upper ends of the driving gear, the rack and the transmission shaft are all placed in the gear box; an oil filling port is provided on the top of the gear box, and a sealing bolt is provided at the oil filling port; an observation window is provided on the side wall of the gear box, and the observation window is made of a transparent material.

[0063] Furthermore, in the above technical solution, the shock absorbing assembly also includes a limit ring 64, which is fixedly mounted on the outer wall of the vibrating cylinder; the inner diameter of the limit ring is larger than the outer diameter of the connecting plate, and the limit ring is sleeved on the outer side of the connecting plate; a gap is left between the limit ring and the connecting plate to limit the horizontal displacement of the vibrating cylinder.

[0064] Furthermore, in the above technical solution, the adjustment component also includes a locking nut, which is sleeved on the adjusting screw; the locking nut is located above the crossbeam and is used to fix the adjusting screw in the adjusted position; the outer periphery of the adjusting handwheel is provided with scale lines, and a reference line is provided at the corresponding position on the crossbeam to indicate the height position of the vibrating cylinder.

[0065] Furthermore, in the above technical solution, a feed port is provided at the center position of the upper surface of the sealing cover, and a sealing plug is provided at the feed port; a stirring blade 91 is fixedly connected to the lower surface of the sealing cover, and the stirring blade is arranged in a spiral shape; a guide groove matching the stirring blade is provided on the inner wall of the vibrating cylinder, and the guide groove is arranged along the axial direction of the vibrating cylinder.

[0066] Furthermore, in the above technical solution, a power switch, a start button, a stop button, a vibration frequency adjustment knob and a vibration time setting knob are provided on the control panel; a control circuit is provided in the control panel, and the control circuit is electrically connected to the motor for controlling the start and stop, speed and running time of the motor.

[0067] Furthermore, in the above technical solution, a discharge port 92 is provided at the bottom of the vibrating cylinder, and an electric valve is provided at the discharge port; the electric valve is electrically connected to the control panel for controlling the opening and closing of the discharge port; a liquid level sensor is also provided on the outer wall of the vibrating cylinder, and the liquid level sensor is electrically connected to the control panel for detecting the liquid level height of the concrete in the vibrating cylinder.

[0068] Among them, in the above technical solution, it also includes a control chip, which is electrically connected to the motor, the liquid level sensor and the electric valve. The control chip is provided with a vibration optimization module, which is used to automatically adjust the vibration parameters according to the viscosity and liquid level of the concrete; the vibration optimization module performs the following steps:

[0069] S10, receiving concrete liquid level height data sent by the liquid level sensor;

[0070] S20, determining the current concrete filling degree according to the liquid level height data;

[0071] S30, obtaining preset concrete viscosity parameters;

[0072] S40, selecting an initial vibration frequency and a vibration time from a pre-established vibration parameter database according to the concrete filling degree and viscosity parameters;

[0073] S50, starting the motor and performing a vibration operation according to the initial vibration frequency and vibration time;

[0074] S60, after the vibration operation is completed, the liquid level sensor data is obtained again to calculate the concrete settlement degree;

[0075] S70, adjusting the vibration frequency and vibration time according to the degree of settlement, and generating optimized vibration parameters;

[0076] S80. Repeat the vibration operation using the optimized vibration parameters until a preset settlement target or a maximum number of vibrations is reached.

[0077] The high-viscosity concrete vibration system in this embodiment includes a vibration cylinder, a vibration rod, a driving mechanism, a transmission mechanism, a fixing frame, a shock absorbing component, an adjusting component, a control panel, a sealing cover and a control chip.

[0078] The vibrating cylinder is made of 304 stainless steel, with a cylindrical structure, a height of 1500 mm, an inner diameter of 400 mm, and a wall thickness of 10 mm. There is an opening at the top of the vibrating cylinder and a closed bottom. Ten annular protrusions are evenly arranged along the axial direction on the inner wall of the vibrating cylinder, each of which is 5 mm high and 10 mm wide. There is a discharge port with a diameter of 50 mm at the bottom of the vibrating cylinder, and an electric ball valve of model ZKV-25 is installed at the discharge port to control the discharge of concrete. An ultrasonic liquid level sensor of model LUC-M12 is installed on the outer wall of the vibrating cylinder to monitor the liquid level of concrete in the cylinder in real time.

[0079] The vibrating rod is made of 45# steel, cylindrical, 80mm in diameter and 1400mm in length. There are 10 annular grooves on the outer wall of the vibrating rod corresponding to the protrusions on the inner wall of the vibrating tube, each groove is 6mm deep and 12mm wide. There is a detachable conical head at the bottom of the vibrating rod, which is made of high-strength alloy steel, with a bottom diameter of 100mm and a height of 150mm. Six spiral ridges are evenly arranged on the outer surface of the conical head, with a height of 8mm and a width of 10mm. The conical head is connected to the bottom of the vibrating rod through a M20*1.5 fine thread.

[0080] The drive mechanism includes a three-phase asynchronous motor of model Y2-132M-4, with a rated power of 7.5 kW and a rated speed of 1450 rpm. The motor is fixed to a 15 mm thick steel motor seat by four M12 bolts. The motor seat is fixed to the outer wall of the vibrating cylinder by welding. The power cord adopts a four-core cable of YJV-0.6 / 1kV-36+14 square millimeters, one end of which is connected to the motor junction box and the other end is connected to the control panel.

[0081] The transmission mechanism includes a planetary reducer model JZQ350 with a reduction ratio of 1:10. The input shaft of the reducer is connected to the output shaft of the motor through a coupling, and the output shaft is fixedly connected to the upper end of the vibrating rod. The reducer is fixed to the top of the vibrating cylinder by 4 M16 bolts. A cast aluminum gearbox is provided outside the reducer, and an M12 oil filling port is provided on the top of the gearbox, and a tempered glass observation window with a diameter of 50 mm is provided on the side wall.

[0082] The fixed frame is welded from Q235B steel and includes a 2000×2000×20mm square base, 4 round tube support columns with a diameter of 100mm and a height of 2000mm, and a 2000×2000×20mm square beam. The support column is connected to the base and beam through fillet welds. The surface of the fixed frame is sprayed with epoxy resin anti-corrosion paint after sandblasting, and the coating thickness is not less than 120 microns.

[0083] The shock absorber assembly includes 4 sets of spring shock absorbers, each of which consists of 2 sets of compression springs and 1 rubber shock absorber pad. The spring is made of 65Mn spring steel, with a free height of 200 mm and a stiffness coefficient of 98 N / mm. The shock absorber pad is made of natural rubber material, with a diameter of 150 mm, a thickness of 30 mm, and a Shore hardness of 60 degrees. The 4 sets of shock absorbers are evenly distributed on the base and fixed by M16 bolts. The bottom of the vibrating cylinder is connected to the shock absorber assembly through a circular connecting plate with a diameter of 500 mm and a thickness of 20 mm.

[0084] The adjustment assembly includes 4 M36*3 adjustment screws, the length of the screw is 500 mm, and the material is 45 steel. The lower end of each adjustment screw is fixedly connected to the outer wall of the vibrating cylinder by welding, and the upper end passes through the threaded hole on the beam. A handwheel with a diameter of 200 mm is installed on the top of each screw, and the outer circumference of the handwheel is engraved with 0-100 scale lines. A reference line is set at the corresponding position on the beam. Each screw is also covered with an M36 locking nut to fix the adjusted position.

[0085] The control panel is made of 304 stainless steel plate, with a size of 600×400×200 mm and a protection level of IP65. The panel is equipped with a power switch, a start button, a stop button, a vibration frequency adjustment knob, a vibration time setting knob and a 7-inch touch screen. A Siemens PLC controller model S7-1200 is installed inside the panel to control the operation of the entire system.

[0086] The sealing cover is made of 304 stainless steel, in the shape of a disc, with a diameter of 450 mm and a thickness of 10 mm. The sealing cover is connected to the top edge of the vibrating cylinder through three equally spaced hinges. A feed port with a diameter of 100 mm is provided at the center of the upper surface of the sealing cover, and a rubber sealing plug is provided at the feed port. Four spiral stirring blades are welded on the lower surface of the sealing cover, with a length of 150 mm, a width of 50 mm and a thickness of 5 mm. Four guide grooves with a width of 60 mm and a depth of 10 mm are provided on the inner wall of the vibrating cylinder.

[0087] The control chip uses an ARM Cortex-M4 processor model STM32F407VGT6, with a main frequency of 168MHz, built-in 1MB flash memory and 192KB RAM. The control chip communicates with the PLC controller through the RS485 interface, collects liquid level sensor data through the analog input interface, and controls the start and stop of the motor and electric valve through the digital output interface.

[0088] The specific implementation method of step S10 is: the control chip sends a read command to the liquid level sensor via the RS485 interface using the ModBus RTU protocol to obtain the current concrete liquid level height data. The liquid level sensor adopts the ultrasonic ranging principle, emits ultrasonic pulses and receives echoes, and calculates the liquid level by measuring the ultrasonic round trip time. The control chip reads the liquid level data every 100 milliseconds, reads it 10 times in a row, and takes the average value as the current liquid level to eliminate measurement errors. The purpose of this step is to accurately obtain the real-time liquid level information of the concrete and provide basic data for subsequent filling degree calculation and vibration parameter optimization.

[0089] The specific implementation of step S20 is: the control chip calculates the current filling degree of concrete based on the liquid level data obtained in step S10 and the total height of the vibrating cylinder. The filling degree calculation adopts an improved exponential decay model, taking into account the influence of the vibration time on the filling degree. The specific calculation formula is: Where F is the concrete filling degree, h is the current liquid level height (meters), H is the total height of the vibrator (meters), α is the filling coefficient (default value is 0.2), β is the time decay coefficient (default value is 0.1 per minute), t is the vibration time (minutes), ε1 is the error term, and it follows the normal distribution N(0,0.01 2). The control chip uses 32-bit floating point numbers for calculation to ensure accuracy. The purpose of this step is to convert the original liquid level data into more physically meaningful filling parameters, providing a basis for the subsequent vibration strategy formulation.

[0090] The specific implementation of step S30 is: the control chip reads the preset concrete viscosity parameters from the internal EEPROM. The viscosity parameters are obtained using the improved Bingham model, which takes into account the effects of temperature and water content on viscosity. The specific calculation formula is: μ = μ0·(1+k T ·(T-T0))·(1+k w ·(-w0))+ε2. Where μ is the viscosity of concrete (Pascal·second), μ0 is the reference viscosity (the default value is 500 Pascal·second), k T is the temperature influence coefficient (default value is 0.02 per degree Celsius), T is the current temperature (degree Celsius), T0 is the reference temperature (20 degrees Celsius), k w is the moisture content influence coefficient (default value 0.05), w is the current moisture content (percentage), w0 is the reference moisture content (10%), ε2 is the error term, and it follows the normal distribution N(0,10 2 ). The temperature data is obtained through the PT100 temperature sensor installed on the outer wall of the vibrating cylinder, and the water content is calculated based on the pre-determined concrete mix ratio. The purpose of this step is to obtain the key parameters that reflect the rheological properties of concrete and provide an important basis for the subsequent optimization of vibration parameters.

[0091] The specific implementation of step S40 is: the control chip selects the initial vibration frequency and vibration time from the pre-established vibration parameter database according to the filling degree and viscosity parameters obtained in steps S20 and S30. The database adopts a multi-dimensional lookup table structure and is stored in the flash memory of the control chip. The search process uses a linear interpolation algorithm to improve the accuracy of parameter selection. The specific calculation formula is: f = f0·(1+a1·F+a2·μ)+ε3, t = t0·(1+b1·F+b2·μ)+ε4. Where f is the initial vibration frequency (Hz), f0 is the reference vibration frequency (the default value is 50 Hz), t is the initial vibration time (seconds), t0 is the reference vibration time (the default value is 30 seconds), a1, a2, b1, b2 are unknown coefficients (obtained by fitting multiple sets of experimental data using the least squares method), F is the concrete filling degree, μ is the concrete viscosity (Pascal seconds), ε3 and ε4 are error terms, all of which obey the normal distribution N(0,1 2 ). The purpose of this step is to select the most suitable initial vibration parameters according to the current state of concrete, providing basic settings for subsequent vibration operations.

[0092] The specific implementation method of step S50 is: the control chip sends a start command and a frequency setting value to the frequency converter through the PLC controller according to the initial vibration frequency and vibration time determined in step S40. The frequency converter adopts an ABB general-purpose frequency converter with model ACS580-01-038A-4 and a rated power of 18.5 kilowatts. According to the received frequency setting value, the frequency converter controls the output voltage and frequency through the space vector pulse width modulation (SVPWM) technology, and drives the motor to run at the set speed. The control chip also starts a software timer to control the vibration time. During the vibration process, the control chip monitors the working current of the motor in real time through the current transformer. If it is detected that the current exceeds 1.5 times the rated value, the vibration operation is stopped immediately and an alarm is sounded. The purpose of this step is to perform the actual vibration operation while ensuring the safe operation of the equipment.

[0093] The specific implementation of step S60 is: after the vibration operation is completed, the control chip calls the method in step S10 again to obtain the liquid level sensor data and calculate the settlement degree of the concrete. The settlement degree is calculated using an exponential decay model, taking into account the effect of the vibration time on the settlement. The specific calculation formula is: Where S is the degree of settlement, h0 is the concrete height before vibration (meters), h1 is the concrete height after vibration (meters), λ is the settlement time constant (default value is 0.05 per second), t is the vibration time (seconds), ε5 is the error term, which follows the normal distribution N(0,0.01 2 ). The control chip calculates the settlement degree five times in a row and takes the average value as the final result to reduce the influence of measurement error. The role of this step is to evaluate the effect of the current vibration operation and provide a basis for subsequent parameter optimization.

[0094] The specific implementation of step S70 is: the control chip uses the gradient descent algorithm to adjust the vibration frequency and vibration time according to the settlement degree calculated in step S60 and the preset target settlement degree, and generates optimized vibration parameters. The specific calculation formula is: new =f·(1+c1·(S target -S))+ε6,t new =t·(1+c2·(S target -S))+ε7. Among them, f new is the optimized vibration frequency (Hz), t new is the optimized vibration time (seconds), f and t are the initial vibration frequency and time, c1 and c2 are adjustment coefficients (obtained by fitting multiple sets of experimental data using the least squares method), S target is the target settlement degree (the default value is 0.95), S is the actual settlement degree, ε6 and ε7 are error terms, both of which obey the normal distribution N(0,0.5 2). The control chip uses 32-bit floating point numbers for calculation to ensure accuracy. During the optimization process, the control chip will check whether the calculation result is within the preset safety range (vibration frequency: 20-80 Hz, vibration time: 10-120 seconds). If it exceeds the range, the boundary value is taken. The purpose of this step is to dynamically adjust the vibration parameters according to the actual vibration effect to achieve the best vibration effect.

[0095] The specific implementation method of step S80 is: the control chip uses the vibration parameters optimized in step S70 to repeat the operations of steps S50 to S70. After each cycle, the control chip will determine whether the preset settlement target or the maximum number of vibrations has been reached. The judgment standard for the settlement target is: the difference between the current settlement degree and the target settlement degree is less than 0.02. The maximum number of vibrations is set to 5 times by default. If the settlement target or the maximum number of vibrations is reached, the control chip will stop the vibration operation and send a completion signal to the PLC controller. If the target is not reached and the maximum number of times is not reached, the next cycle will continue. During the cycle, the control chip will monitor the temperature changes in the vibration cylinder in real time. If the temperature rises by more than 5 degrees Celsius, the vibration operation will be forced to end and an alarm will be sounded to prevent excessive vibration from causing a decrease in concrete performance. The purpose of this step is to ensure that the concrete reaches the best dense state through multiple optimization and vibration, while avoiding excessive vibration from causing adverse effects on concrete quality.

[0096] During the entire vibration process, the control chip also performs the following auxiliary functions:

[0097] 1. Real-time data recording: The control chip records the parameters (frequency, time), settlement degree, temperature and other data of each vibration into the internal circular buffer. The buffer size is 1MB, which can store detailed data of the last 1000 vibrations. These data can be exported through the RS485 interface for subsequent quality analysis and process optimization.

[0098] 2. Adaptive parameter adjustment: The control chip uses the exponentially weighted moving average (EWMA) algorithm to dynamically adjust the base vibration frequency and time based on historical vibration data. The adjustment formula is: X new =α·X current +(1-α)·X old Among them, X represents the reference frequency or time, and α is the smoothing coefficient (the default value is 0.2). This adaptive adjustment can gradually adapt the system to the characteristics of different batches of concrete.

[0099] 3. Fault diagnosis: The control chip can realize real-time fault diagnosis by monitoring parameters such as motor current, vibrating rod position, and liquid level changes. For example, if the motor current suddenly decreases, it may indicate a problem with the transmission system; if the liquid level rises abnormally during the vibration process, it may indicate that the concrete is segregating. Once an abnormality is detected, the control chip will immediately stop the vibration and alarm.

[0100] 4. Energy consumption optimization: The control chip uses a dynamic programming algorithm to calculate the optimal vibration strategy based on the relationship between vibration effect and energy consumption. The energy consumption calculation formula is: Among them, E is the total energy consumption (joule), P is the instantaneous power (watt), f is the vibration frequency (Hz), and t is the vibration time (seconds). By optimizing energy consumption, production costs can be reduced while ensuring vibration quality.

[0101] 5. Human-computer interaction: The control chip provides a friendly human-computer interaction interface through a 7-inch touch screen. Operators can view real-time vibration parameters, historical data curves, equipment status and other information through the touch screen. The interface adopts a multi-level menu structure, mainly including four modules: real-time monitoring, parameter setting, data query, and system maintenance. In the parameter setting module, authorized personnel can adjust key parameters such as target settlement degree and maximum vibration times.

[0102] 6. Remote monitoring: The control chip has a built-in 4G communication module that supports remote data upload and control. The system uploads key operating parameters to the cloud server every 10 minutes, and managers can view the equipment operating status in real time through the mobile phone APP. In an emergency, managers can send a remote shutdown command through the APP.

[0103] 7. Vibration analysis: The control chip collects data from the acceleration sensor installed on the vibrating rod to perform real-time vibration spectrum analysis. The fast Fourier transform (FFT) algorithm is used to convert the time domain signal into a frequency domain signal. By monitoring the vibration intensity in a specific frequency band, the vibration effect can be evaluated and equipment abnormalities can be discovered in a timely manner.

[0104] 8. Temperature compensation: Considering the influence of ambient temperature on concrete performance, the control chip automatically adjusts the vibration parameters according to the current temperature. The temperature compensation formula is: f c =f·(1+k t ·(TT r )). Among them, f c is the compensated frequency (Hz), f is the original frequency (Hz), k t is the temperature compensation coefficient (default value is 0.005 per degree Celsius), T is the current temperature (degrees Celsius), T r is the reference temperature (20 degrees Celsius).

[0105] 9. Automatic cleaning: To prevent concrete from scaling on the surface of the vibrating cylinder and vibrating rod, the system automatically performs a cleaning procedure after each day's work. The cleaning process includes: injecting clean water into the vibrating cylinder, starting the vibrating rod to run at a low speed for 30 seconds, draining the sewage, and repeating 3 times. The amount of water used for cleaning and the number of times can be set on the touch screen.

[0106] 10. Safety protection: The system is equipped with multiple safety protection mechanisms, including overcurrent protection (power off immediately when the motor current exceeds 1.5 times the rated value), overheating protection (the motor will shut down when the motor temperature exceeds 85 degrees Celsius), vibration overlimit protection (the motor will shut down when the vibration acceleration exceeds 10g), and emergency stop (emergency stop buttons are set on the touch screen and the outside of the control box).

[0107] 11. Data encryption: Considering that vibration parameters may involve the core technology of the enterprise, the control chip encrypts the stored parameters and historical data. The AES-256 encryption algorithm is used, and the key is generated by the hardware unique identifier (UID) and random numbers. This can prevent the data from being illegally read and tampered with.

[0108] 12. Automatic identification: The system supports automatic identification of different types of vibrating rods. An RFID tag is installed at the bottom of the vibrating rod, and the control box has a built-in RFID reader. When replacing the vibrating rod, the system automatically reads the tag information and loads the corresponding parameter configuration without manual intervention.

[0109] 13. Predictive maintenance: The control chip uses machine learning algorithms (such as support vector machines (SVM)) to predict possible equipment failures by analyzing historical operating data. The system will issue maintenance reminders before the expected failure occurs.

[0110] 14. Batch tracking: For each vibration operation, the control chip will generate a unique batch number and associate the vibration parameters, operation time, operator and other information with the batch number. This can achieve full tracking of concrete quality, which is convenient for subsequent quality control and problem tracing.

[0111] 15. Automatic leveling: The system determines whether the vibrating cylinder is in a horizontal state by monitoring the pressure sensor data at the four corners of the vibrating cylinder. If a tilt is detected, the control chip will automatically control the four electric push rods of the adjustment component to make fine adjustments to ensure that the vibrating cylinder always remains horizontal, thereby ensuring the uniformity of the vibration effect.

[0112] In summary, the high-viscosity concrete vibration system of this embodiment realizes the automation, intelligence and fine control of the concrete vibration process by accurately controlling the vibration parameters and combining a variety of intelligent algorithms and functions. The system can not only adapt to concrete with different characteristics, but also make adaptive adjustments according to the actual vibration effect, while taking into account multiple aspects such as production efficiency, product quality and energy consumption. In addition, the system's remote monitoring, data analysis and predictive maintenance functions provide strong technical support for concrete production management, which helps to improve overall production efficiency and product quality stability.

[0113] Example

[0114] A large-scale construction project is currently pouring the foundation of a high-rise building. In order to ensure the quality and density of the concrete, the project department decided to use the high-viscosity concrete vibrating system of the present invention. The following is a specific example of the system in actual application.

[0115] First, the engineers determined the required concrete mix according to the building design requirements and geological conditions. The concrete has a compressive strength grade of C50, a slump of 180 mm, and a viscosity range of 500-800 Pascal seconds. Considering the depth and complexity of the foundation, high-performance vibrating equipment is required.

[0116] The project department selected the high-viscosity concrete vibration system of the present invention, and its main parameters are as follows: the height of the vibration cylinder is 1500 mm and the inner diameter is 400 mm; the diameter of the vibration rod is 80 mm and the length is 1400 mm; the drive motor power is 7.5 kilowatts; and the control system adopts the STM32F407VGT6 chip.

[0117] During the actual construction process, the technicians first installed the vibration system to the designated location. After the installation was completed, the system was initialized. Through the touch screen interface, the following parameters were entered: the target settlement degree was 0.95, the maximum number of vibrations was 5 times, the vibration frequency range was 20-80 Hz, and the vibration time range was 10-120 seconds.

[0118] The concrete mixer truck then delivers the freshly mixed concrete to the construction site. The operator opens the feed port on the top of the vibrating drum and pours the concrete into the vibrating drum. When the level sensor detects that the concrete height reaches 1,200 mm, the feed port is automatically closed.

[0119] The system starts to execute the vibration procedure. The following is the detailed process of the first vibration:

[0120] 1. Liquid level detection: The liquid level sensor reads data 10 times, and the average value is 1198 mm.

[0121] 2. Filling degree calculation: According to the formula, the filling degree is 0.799.

[0122] 3. Obtaining viscosity parameters: The temperature sensor measures the current temperature to be 28 degrees Celsius, and according to the preset concrete mix ratio, the water content is 9.8%. The current viscosity is calculated to be 685 Pascal seconds.

[0123] 4. Initial vibration parameter selection: The system queries the database and selects the initial vibration frequency as 55 Hz and the vibration time as 40 seconds.

[0124] 5. Vibration execution: The inverter controls the motor to run at a frequency of 55 Hz for 40 seconds. During this process, the motor current is stable at around 15 amps, without abnormal fluctuations.

[0125] 6. Calculation of settlement degree: After the vibration is completed, the liquid level sensor reads the data again, and the average value is 1165 mm. The settlement degree is calculated to be 0.825.

[0126] 7. Parameter optimization: The system calculates new vibration parameters based on the difference between the settlement degree and the target value: the frequency is adjusted to 62 Hz and the time is extended to 50 seconds.

[0127] The system then started the second vibration. After the second vibration, the settlement reached 0.91. The system optimized the parameters again and started the third vibration. After the third vibration, the settlement reached 0.938, which was very close to the target value of 0.95.

[0128] Considering that it is very close to the target value, the system decides to perform another fine-tuning vibration. The fourth vibration adopts a frequency of 65 Hz and lasts for 30 seconds. After the vibration is completed, the final settlement degree reaches 0.949, which meets the set target requirements.

[0129] Table 1 shows the key data of the entire vibration process:

[0130] Vibration times Frequency (Hz) Time (seconds) Starting height (mm) End height (mm) Degree of sedimentation 1 55 40 1198 1165 0.825 2 62 50 1165 1140 0.910 3 64 45 1140 1125 0.938 4 65 30 1125 1120 0.949

[0131] During the entire vibration process, the system also performs the following auxiliary functions:

[0132] 1. Real-time data recording: The parameters, effects and environmental data of each vibration are recorded in the system's internal storage. These data can be viewed through the touch screen or exported to external devices through the RS485 interface.

[0133] 2. Energy consumption optimization: The system calculated that the total energy consumption of this vibration operation was 0.38 kWh, which saves about 20% of energy compared with traditional manual control.

[0134] 3. Remote monitoring: The project manager at the construction site monitored the entire vibration process in real time through the mobile phone APP. He saw that the vibration effect was good and there were no abnormalities.

[0135] 4. Vibration analysis: Data collected by the acceleration sensor showed that at a frequency of 65 Hz, the peak vibration acceleration of the vibrating rod reached 8.2g, which is within the ideal working range.

[0136] 5. Temperature compensation: Since the current temperature (28 degrees Celsius) is higher than the reference temperature (20 degrees Celsius), the system slightly increases the frequency to 65.2 Hz during the last vibration to compensate for the effect of temperature on the fluidity of concrete.

[0137] 6. Automatic leveling: During the vibration process, the system detects that the vibrating cylinder is slightly tilted (about 0.5 degrees). The adjustment component automatically adjusts the height of the four support points to restore the vibrating cylinder to a horizontal state.

[0138] After the vibration is completed, the operator opens the discharge port and guides the vibrated concrete into the pouring position. During the discharge process, the system continues to monitor the flow state of the concrete to ensure that no segregation occurs.

[0139] At the end of the day's work, the system automatically performed a cleaning procedure. First, 100 liters of clean water was injected into the vibrating cylinder, the vibrating rod was started to run at a low speed of 30 Hz for 30 seconds, and then the dirty water was discharged. This process was repeated three times to ensure that the equipment was clean.

[0140] The next morning, the technician checked the daily report generated by the system. The report showed that 32 batches of concrete were vibrated the previous day, with an average of 3.6 vibrations per batch and an average energy consumption of 0.41 kWh / batch. The system also compared the data of the past week and found that the vibration efficiency yesterday increased by 5%, which may be related to the parameter adaptive adjustment made the day before.

[0141] The technician also noticed that the system issued a warning message: According to the trend analysis of the motor current, it is expected that the drive shaft will need to be replaced after about 200 working hours. The technician immediately arranged a maintenance plan for next week.

[0142] In the following month, this high-viscosity concrete vibration system continued to operate stably and completed about 1,000 batches of concrete vibration work. During this period, the system's adaptive function continuously optimized the vibration parameters, reducing the average number of vibrations from 3.6 times / batch in the early stage to 3.2 times / batch, which not only improved efficiency but also reduced the risk of over-vibration.

[0143] The project department conducted sampling tests on the concrete produced within one month, and the results showed:

[0144] 1. Compressive strength: The average 28-day compressive strength of 50 samples is 58.3 MPa, with a standard deviation of 1.2 MPa, all of which meet the design requirement of C50 grade.

[0145] 2. Density: Using ultrasonic testing method, the average sound velocity of 100 measuring points is 4580 m / s, and the minimum value is 4510 m / s, indicating that the density of concrete is very good.

[0146] 3. Uniformity: Through the rebound test, the coefficient of variation of the rebound value of 200 measuring points is 4.2%, which is far lower than the 10% allowed by the specification, indicating that the uniformity of the concrete is excellent.

[0147] These test results fully demonstrate the excellent performance of the high viscosity concrete vibrating system of the present invention in ensuring concrete quality.

[0148] Specifically, the principle of the present invention is: the high viscosity concrete vibrating system proposed by the present invention is mainly composed of a vibrating cylinder, a vibrating rod, a driving mechanism, a transmission mechanism, a fixing frame, a shock absorbing component, an adjusting component, a control panel and a sealing cover. Its working principle is as follows:

[0149] First, the motor in the driving mechanism drives the vibrating rod to reciprocate up and down through the transmission mechanism. Specifically, a driving gear is installed on the output shaft of the motor, and the rack meshing with it is installed on the transmission shaft, and the lower end of the transmission shaft is connected to the vibrating rod. The operation of the motor drives the driving gear to rotate, which is transmitted to the rack and the transmission shaft through the meshing of the gears, and finally drives the vibrating rod to move up and down. The vibrating rod reciprocates in the vibrating cylinder, thereby vibrating the concrete loaded in the vibrating cylinder.

[0150] In order to enhance the vibration effect, the inner wall of the vibrating cylinder is provided with multiple annular protrusions, and the outer wall of the vibrating rod is provided with corresponding annular grooves. During the vibration process, the annular protrusions and the grooves cooperate with each other to form intermittent obstructions, which can effectively destroy the continuity of the concrete and promote the full discharge of bubbles. At the same time, the bottom of the vibrating rod is provided with a conical head and the outer wall has spiral ridges, which can further improve the fluidity of the concrete and increase the vibration efficiency.

[0151] In order to protect the vibration system, an optimized shock-absorbing mechanism design is adopted. The vibration cylinder is connected to the base of the fixed frame through springs and shock-absorbing pads, which can effectively absorb vibration shock and reduce damage to the equipment structure. At the same time, a limit ring is provided to limit the horizontal displacement of the vibration cylinder and further improve the stability of the system.

[0152] In addition, the system also has an automatic vibration parameter optimization function. Through the various adjustment devices on the control panel, the vibration frequency and time can be manually set to meet the vibration requirements of concrete with different viscosities. The system's built-in vibration optimization module can automatically select the best vibration parameters based on the real-time monitored concrete level and the preset viscosity parameters, and continuously optimize to ensure the ideal vibration effect.

[0153] The sealing cover is provided with a feed port and a mixing blade, which can stir the concrete during the vibration process. At the same time, the inner wall of the vibrating cylinder is provided with a guide groove, which cooperates with the mixing blade to improve the fluidity of the concrete and promote the full discharge of bubbles.

[0154] In summary, the high-viscosity concrete vibration system achieves efficient vibration of high-viscosity concrete through a unique vibration mechanism design, optimized shock-absorbing mechanism, intelligent control system, and integration of mixing functions, solving the problem that existing technologies cannot meet the vibration requirements of this type of concrete. It not only has good vibration effects and is easy to operate, but also has the function of automatically optimizing vibration parameters, greatly improving work efficiency. This innovative vibration system will surely bring broad application prospects to construction engineering.

[0155] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high viscosity concrete vibrating system, characterized in that: The invention comprises: a vibrating cylinder, a vibrating rod, a driving mechanism, a transmission mechanism, a fixing frame, a shock absorbing assembly, an adjusting assembly, a control panel and a sealing cover; the vibrating cylinder is a cylindrical structure, the top of the vibrating cylinder is provided with an opening, and the bottom of the vibrating cylinder is in a closed state; the vibrating rod is cylindrical, the diameter of the vibrating rod is smaller than the inner diameter of the vibrating cylinder, and the vibrating rod is vertically arranged in the vibrating cylinder; the driving mechanism comprises a motor, a motor seat and a power cord, the motor seat is fixedly mounted above the vibrating cylinder, the motor is fixed to the motor seat by bolts, and the power cord is electrically connected to the motor; the transmission mechanism comprises a driving gear, a rack and a transmission shaft, the driving gear is fixedly mounted on the output shaft of the motor, the rack is fixedly mounted on the upper end of the transmission shaft, the driving gear is meshed with the rack, the lower end of the transmission shaft is fixedly connected to the upper end of the vibrating rod, and the transmission shaft is slidably connected to the vibrating cylinder; the fixing frame comprises a base, a support column and a crossbar. The base is in the shape of a square flat plate, the support columns are vertically fixed at the four corners of the base, and the cross beam is fixedly connected to the top ends of the four support columns; the shock-absorbing assembly includes a spring, a shock-absorbing pad and a connecting plate, one end of the spring is fixedly connected to the base, the other end of the spring is fixedly connected to the connecting plate, and the shock-absorbing pad is arranged between the connecting plate and the bottom of the vibrating cylinder; the adjusting assembly includes an adjusting screw, an adjusting hand wheel and a fixing sleeve, the adjusting screw is vertically arranged, the lower end of the adjusting screw is fixedly connected to the outer side wall of the vibrating cylinder, the upper end of the adjusting screw passes through the threaded hole on the cross beam and is fixedly connected to the adjusting hand wheel, the fixing sleeve is arranged on the adjusting screw and is fixedly connected to the cross beam; the control panel is fixedly installed on one of the support columns, and the control panel is electrically connected to the motor; the sealing cover is disc-shaped, the diameter of the sealing cover is larger than the diameter of the opening of the vibrating cylinder, and the sealing cover is rotatably connected to the top edge of the vibrating cylinder by a hinge.

2. A high viscosity concrete vibrating system according to claim 1, characterized in that: A plurality of annular protrusions are provided on the inner wall of the vibrating cylinder, and the plurality of annular protrusions are evenly distributed along the axial direction of the vibrating cylinder; a plurality of annular grooves are provided on the outer wall of the vibrating rod, and the plurality of annular grooves correspond one-to-one to the plurality of annular protrusions; when the vibrating rod reciprocates up and down in the vibrating cylinder, the annular protrusions and the annular grooves cooperate with each other to enhance the vibration effect.

3. A high viscosity concrete vibrating system according to claim 2, characterized in that: A conical head is provided at the bottom of the vibrating rod, and the bottom diameter of the conical head is larger than the diameter of the vibrating rod; a plurality of spiral ridges are provided on the outer surface of the conical head, and the plurality of spiral ridges are evenly distributed along the axial direction of the conical head; the conical head is detachably connected to the bottom end of the vibrating rod by a threaded connection.

4. A high viscosity concrete vibrating system according to claim 3, characterized in that: The transmission mechanism also includes a gear box, which is fixedly installed on the top of the vibrating cylinder; the upper ends of the driving gear, rack and transmission shaft are all placed in the gear box; an oil filling port is provided on the top of the gear box, and a sealing bolt is provided at the oil filling port; an observation window is provided on the side wall of the gear box, and the observation window is made of transparent material.

5. A high viscosity concrete vibrating system according to claim 4, characterized in that: The shock absorbing assembly also includes a limit ring, which is fixedly mounted on the outer wall of the vibrating cylinder; the inner diameter of the limit ring is larger than the outer diameter of the connecting plate, and the limit ring is sleeved on the outer side of the connecting plate; a gap is left between the limit ring and the connecting plate to limit the horizontal displacement of the vibrating cylinder.

6. A high viscosity concrete vibrating system according to claim 5, characterized in that: The adjustment assembly also includes a locking nut, which is sleeved on the adjusting screw; the locking nut is located above the crossbeam and is used to fix the adjusting screw in an adjusted position; the outer periphery of the adjusting handwheel is provided with scale lines, and a reference line is provided at a corresponding position on the crossbeam to indicate the height position of the vibrating cylinder.

7. A high viscosity concrete vibrating system according to claim 6, characterized in that: A feed port is provided at the center of the upper surface of the sealing cover, and a sealing plug is provided at the feed port; a stirring blade is fixedly connected to the lower surface of the sealing cover, and the stirring blade is arranged in a spiral shape; a guide groove matching the stirring blade is provided on the inner wall of the vibrating cylinder, and the guide groove is arranged along the axial direction of the vibrating cylinder.

8. A high viscosity concrete vibrating system according to claim 7, characterized in that: The control panel is provided with a power switch, a start button, a stop button, a vibration frequency adjustment knob and a vibration time setting knob; the control panel is provided with a control circuit, which is electrically connected to the motor and is used to control the start and stop, speed and running time of the motor.

9. A high viscosity concrete vibrating system according to claim 8, characterized in that: A discharge port is provided at the bottom of the vibrating cylinder, and an electric valve is provided at the discharge port; the electric valve is electrically connected to the control panel and is used to control the opening and closing of the discharge port; a liquid level sensor is also provided on the outer wall of the vibrating cylinder, and the liquid level sensor is electrically connected to the control panel and is used to detect the liquid level height of the concrete in the vibrating cylinder.

10. A high viscosity concrete vibrating system according to claim 1, characterized in that: The machine also includes a control chip, which is electrically connected to the motor, the liquid level sensor and the electric valve. A vibration optimization module is provided in the control chip, and the vibration optimization module is used to automatically adjust the vibration parameters according to the viscosity and liquid level of the concrete. The vibration optimization module performs the following steps: S10, receiving concrete liquid level height data sent by the liquid level sensor; S20, determining the current concrete filling degree according to the liquid level height data; S30, obtaining preset concrete viscosity parameters; S40, selecting an initial vibration frequency and a vibration time from a pre-established vibration parameter database according to the concrete filling degree and viscosity parameters; S50, starting the motor and performing a vibration operation according to the initial vibration frequency and vibration time; S60, after the vibration operation is completed, the liquid level sensor data is obtained again to calculate the concrete settlement degree; S70, adjusting the vibration frequency and vibration time according to the degree of settlement, and generating optimized vibration parameters; S80. Repeat the vibration operation using the optimized vibration parameters until a preset settlement target or a maximum number of vibrations is reached.

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