CN-122008413-A - Intelligent proportioning equipment and proportioning method for deep and easy-collapse soil stratum bored pile slurry

CN122008413ACN 122008413 ACN122008413 ACN 122008413ACN-122008413-A

Abstract

The invention belongs to the technical field of bridge construction, in particular to intelligent proportioning equipment and a proportioning method for deep and easy-collapse soil stratum drilling bored concrete pile slurry, which comprises a circular fixing frame, the body array of mount is embedded to have a storehouse body, the lower extreme of storehouse body is provided with the agitator tank, the lower extreme of agitator tank is provided with the discharging pipe. The proportioning method fundamentally solves the overshoot error caused by turn-off lag of the traditional equipment through double flow control of the electromagnetic valve and the proportioning mechanism, dynamically calculates the turn-off lead according to the blanking flow rate acquired by the weighing sensor in real time, and sends out a command before the weight reaches a target value.

Inventors

GAO WENBO
CHENG CHENG
DAI HAICHAO
XIAO YUTAO
WAN XIAOBO
LIU WEIHONG

Assignees

中交第二公路工程局有限公司
中交二公局东萌工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260210

Claims (10)

1. The intelligent proportioning equipment for deep and easy-collapse soil layer bored pile slurry comprises a circular fixing frame (1) and is characterized in that a bin body (2) is embedded in a body array of the fixing frame (1), a stirring tank (3) is arranged at the lower end of the bin body (2), a discharging pipe (4) is arranged at the lower end of the stirring tank (3), a connecting pipe (5) is arranged between the stirring tank (3) and the bin body (2), a settling tank (50) is arranged on the inner wall of the lower end of the connecting pipe (5), the inner wall of the upper end and the inner wall of the lower end of the connecting pipe (5) are fixedly communicated with the inner wall of the lower end of the bin body (2) and the inner wall of the stirring tank (3) respectively, an electromagnetic valve (6) is arranged at the upper end of the connecting pipe (5), and a proportioning mechanism (7) is arranged on the inner wall of the settling tank (50); The proportioning mechanism (7) is used for realizing the action of accurately proportioning the slurry raw materials.
2. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that the proportioning mechanism (7) comprises an electric telescopic rod (71), the outer surface of the electric telescopic rod (71) is fixedly connected with the outer surface of the connecting pipe (5), one end of the telescopic rod of the electric telescopic rod (71) is rotatably connected with a connecting rod (72) through a pin shaft, the lower end of one connecting rod (72) is rotatably connected with a rotary table (73) through a pin shaft, an arc-shaped groove is formed in a disc body of the rotary table (73), and a bearing (74) is fixedly connected with the inner wall of a lower end accommodating groove (50) of the connecting pipe (5).
3. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that an inner ring of a bearing (74) is fixedly connected with a fixed pipe (75), one end of the fixed pipe (75) is fixedly connected with a main gear (76), the inner wall of the fixed pipe (75) is rotatably sleeved with a rotating rod (78), one end of the rotating rod (78) is provided with a slave gear (77), one end of the fixed pipe (75) is provided with a slave pin shaft, and the surface of the slave pin shaft is in sliding connection with the inner wall of the arc-shaped groove.
4. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that a secondary bearing (79) is arranged at the middle position of a rotating rod (78), an auxiliary gear (710) is arranged at the other end of the rotating rod (78), a secondary gear (711) is arranged on one side of the auxiliary gear (710), a secondary fixing pipe is fixedly connected to one end of the auxiliary gear (710), the secondary fixing pipe is rotatably connected with one end of the rotating rod (78) through the bearing, a transmission gear (712) is arranged between the auxiliary gear (710) and the secondary gear (711), and toothed surfaces meshed with the surface of the transmission gear (712) are arranged on the side face of the auxiliary gear (710) and the side face of the secondary gear (711).
5. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that a limiting pipe (716) is sleeved on the outer side of the rotating rod (78), the inner wall of the limiting pipe (716) is fixedly connected with the outer ring of the bearing (79), the outer surface of the secondary fixing pipe and the outer surface of the fixing pipe (75) are rotatably connected with the inner wall of the limiting pipe (716) through bearings, and notches with the main gear (76) and the auxiliary gear (711) are formed in the two ends of the limiting pipe (716).
6. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that an arc-shaped limit groove is formed in the inner wall of the notch, limit strips (714) made of rubber are fixedly connected to the outer surface of the limit pipe (716) in the vertical direction, sealing plates (713) are arranged on two sides of the limit strips (714), arc-shaped surfaces matched with the surfaces of the limit pipe (716) are formed in the lower ends of the sealing plates (713), arc-shaped sliding blocks (715) are symmetrically and fixedly connected to the inner walls of the two ends of each arc-shaped surface, tooth-shaped surfaces matched with the surfaces of the main gear (76) are arranged on the short arc-shaped surface arrays of the arc-shaped sliding blocks (715), and two side surfaces of each arc-shaped sliding block (715) are in sliding connection with the inner walls of the arc-shaped limit groove through limit columns.
7. The intelligent proportioning device for deep and easy-collapse soil stratum bored pile slurry is characterized in that diameters of the upper end and the lower end of the connecting pipe (5) are different, the diameter length of the sealing plate (713) is between the diameter of the upper end and the diameter of the lower end of the connecting pipe (5), the upper surface of the sealing plate (713) is tightly attached to the inner wall of the connecting pipe (5), and an elastic sealing gasket is arranged on the contact inner wall of the connecting pipe (5) and the sealing plate (713).
8. The intelligent proportioning device for deep and easy-collapse soil stratum bored pile slurry of claim 7, wherein a weighing sensor is arranged on the upper surface of the sealing plate (713).
9. The intelligent proportioning device for deep and easy-collapse soil layer stratum bored pile slurry is characterized in that an RFID tag identifier is arranged on the inner wall of the bin body (2), an intelligent controller is arranged on one side of the fixing frame (1), and the RFID tag identifier is in communication connection with the intelligent controller.
10. The proportioning method of the intelligent proportioning equipment for the deep and easy-collapse soil stratum bored pile slurry, which is disclosed by claim 9, is characterized by comprising the following specific steps: S1, the controller reads codes of raw materials in each bin body (2) through the RFID tag identifier And retrieving the target weight of the raw material in the current slurry proportion from a database The controller initializes the proportioning mechanism (7) to enable the two sealing plates (713) to be in a slightly opened state to form an initial opening degree The slow flow of the raw materials is ensured; S2, the controller opens the electromagnetic valve (6), the raw materials fall onto the sealing plate (713) in a slightly opened state through the connecting pipe (5), and the reading of the weighing sensor is Calculating instantaneous discharging flow with fixed period T ; S3, if the calculated flow F (t) is continuously lower than a preset minimum flow threshold value Over time of If the blanking is judged to be unsmooth, the controller drives the electric telescopic rod (71) to enable the sealing plate (713) to execute a rapid full-open to full-close periodic oscillation motion, the mechanical impact is utilized to destroy raw material accumulation, and then the former opening degree is restored ; Under the normal blanking state, the controller accumulates weight based on real time And the target weight Deviation of (2) The control amount is calculated by a PID controller Wherein To according to the deviation And the flow F (t) is queried in real time to obtain variable parameters; S4, accumulating the weight in real time Satisfy the following requirements In which Is based on the predicted turn-off hysteresis of the current flow F (t) , For system mechanical response time, the controller immediately closes the solenoid valve (6), cuts off the source, and then drives the motorized telescopic rod (71) to rotate the seal plate (713) to a fully closed state.

Description

Intelligent proportioning equipment and proportioning method for deep and easy-collapse soil stratum bored pile slurry Technical Field The invention relates to the technical field of bridge construction, in particular to intelligent proportioning equipment and method for thick and easy-collapse soil stratum drilling bored concrete pile slurry. Background The bored pile is used as a core process for deep foundation construction in constructional engineering, is widely applied to engineering such as bridges, high-rise buildings, transportation hubs and the like, and particularly in deep and easy-to-collapse soil layers, the wall protection performance, slag carrying capacity and stability of slurry directly determine pore-forming quality and construction safety, if the slurry specific gravity is insufficient, hole wall collapse or bearing water sand gushing are easily caused, if the viscosity is out of control, slag sediment cleaning is not thorough, the bearing capacity of a pile body is affected, and if the sand content exceeds the standard, drilling tool abrasion is aggravated, and the reaming risk is increased. However, the current slurry proportioning technology of the deep and easy-to-collapse soil layer still has a plurality of problems, such as the requirement of high-viscosity slurry for necking prevention of shallow silt clay, the requirement of high-specific-gravity slurry for hole collapse prevention of middle silt layer and the requirement of strong wall protection slurry for scouring resistance of the lower fine sand layer, but the manual observation of stratum sampling or past construction record adjustment formula only depends on naked eyes, and the mode completely depending on manual proportioning easily leads to unqualified slurry proportioning, thereby leading to excessive engineering cost, increasing engineering rework rate, more serious possibility of hole wall instability and hole collapse and increasing construction risk. For example, the existing equipment generally adopts a single electromagnetic valve or a manual valve as a flow control terminal, the functions of the flow control terminal are limited to two states of opening and closing, or the flow control terminal depends on simple timing control, the single and discontinuous switching control mode cannot be dynamically regulated according to the actual blanking state, so that the inherent defects of large initial impact, unstable middle period and final overshoot exist in the feeding process, the single controller lacks adaptability for different raw materials with large flowability difference, the proportioning precision is difficult to ensure, more importantly, the prior art lacks a fine regulation means capable of real-time counterflushing blanking errors, when the blanking speed is too high, the system cannot immediately perform linear deceleration while maintaining blanking, and when the situation that the target value is about to be reached is detected, the overshoot caused by the closing delay and the air blanking cannot be accurately predicted and flushed. Aiming at the problems, the invention provides intelligent proportioning equipment and proportioning method for deep and easy-collapse soil stratum bored pile slurry. Disclosure of Invention Based on the technical problems of poor stratum suitability and low raw material metering precision caused by the existing manual experience-dependent formula selection, the invention provides intelligent proportioning equipment and method for thick and easy-collapse stratum drilling bored concrete pile slurry. The invention provides thick easy-collapse soil stratum bored pile slurry intelligent proportioning equipment and a proportioning method, which comprise a circular fixing frame, wherein a bin body is embedded in a body array of the fixing frame, a stirring tank is arranged at the lower end of the bin body, a discharging pipe is arranged at the lower end of the stirring tank, a connecting pipe is arranged between the stirring tank and the bin body, a settling tank is arranged on the inner wall of the lower end of the connecting pipe, the inner wall of the upper end and the inner wall of the lower end of the connecting pipe are fixedly communicated with the inner wall of the lower end of the bin body and the inner wall of the stirring tank respectively, an electromagnetic valve is arranged at the upper end of the connecting pipe, and a proportioning mechanism is arranged on the inner wall of the settling tank. The proportioning mechanism is used for realizing the action of accurately proportioning the slurry raw materials. Preferably, the proportioning mechanism comprises an electric telescopic rod, the outer surface of the electric telescopic rod is fixedly connected with the outer surface of the connecting pipe, one end of the telescopic rod of the electric telescopic rod is rotationally connected with a connecting rod through a pin shaft, one of the lower ends of the connecti