Method for adjusting during internal climbing tower crane hoisting

Abstract

The application provides a kind of adjusting method for inner climbing tower crane lifting, belongs to lifting adjusting technical field, it includes: step 1: the equipment used for adjusting during inner climbing tower crane lifting is selected and installed;Step 2: preset safety threshold through central control module;Step 3: the lifting process of inner climbing tower crane is monitored in real time through central control module;Step 4: dynamic adjustment strategy is executed through central control module;Step 5: central control module carries out emergency shutdown and manual intervention trigger to inner climbing tower crane.By real-time monitoring of guide rail installation deviation and tower body inclination state, the action parameters of lifting assembly are dynamically adjusted, the deviation is automatically corrected, the unbalance load is balanced, the risk of jamming and overload is avoided, and the construction efficiency and safety are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of lifting adjustment, and particularly relates to a method for adjusting during lifting of an inner climbing tower crane. BACKGROUND

[0002] In the field of high-rise building construction, the inner climbing tower crane has become a key device in the construction of core tubes and giant columns due to its flexible coverage radius, small space occupation and other advantages. In the prior art, the technical solution disclosed in patent publication CN119191126A discloses a whole formwork system, inner climbing tower crane cooperative lifting equipment and lifting method. Through cooperation of the tube-column integrated steel platform formwork, multiple climbing frames and the hydraulic lifting assembly, efficient lifting of the tower crane is realized. However, this kind of technical solution still has significant defects in actual application.

[0003] Insufficient deviation adaptation capability: During installation of the guide rail, an angle deviation within ±3° is easily generated due to construction errors (such as deviation of wall embedded reference, gap of guide rail splicing), or a radial inclination of ±50 mm is generated due to long-term uneven stress of the tower body. The existing system lacks real-time detection and dynamic adjustment mechanism, and can only drive the hydraulic cylinder to lift according to the preset program, resulting in "stuck" between the climbing frame and the guide rail, that is, when the deviation exceeds 2 mm / m, the contact stress between the clamping assembly (such as the hinged plate and the fixed plate) and the stop rod will increase by more than 30%, which may cause deformation of the guide rail or overload of the hydraulic system.

[0004] Outstanding risk of unbalanced load: When the tower crane is lifted, if the synchronization accuracy error of the two sides of the hydraulic cylinder exceeds 0.5 mm / s, or the friction force of the single-sided guide rail increases due to the deviation (the friction coefficient increases from 0.15 to 0.3), the horizontal unbalanced load borne by the upper climbing frame will exceed the design threshold (usually 50 kN). The existing fixed device (such as the sliding seat and the extension spring) can only provide passive support and cannot actively compensate for the unbalanced load, which easily causes the tower body to sway and may cause the lifting assembly to fail in severe cases.

[0005] Lagging of manual intervention: When the system is stuck or unbalanced, manual shutdown detection (average time consumption of 2-3 hours) is required to correct by adjusting the guide rail connecting piece or replacing the hydraulic element, which not only reduces the construction efficiency (reduction of 40% in the number of daily lifting), but also increases the risk of high-altitude operation.

[0006] To solve the above problems, a method for real-time detection of guide rail deviation and tower body inclination and active adjustment of lifting parameters is urgently needed to ensure the safety and continuity of the lifting process of the inner climbing tower crane. SUMMARY

[0007] To address the shortcomings of existing technologies, this invention provides an adjustment method for internal climbing tower cranes during lifting. By monitoring the guide rail installation deviation and tower tilt in real time, the method dynamically adjusts the action parameters of the lifting components, automatically corrects deviations, balances off-center loads, avoids jamming and overload risks, and improves construction efficiency and safety.

[0008] The present invention employs the following technical solution.

[0009] A method for adjustment during the lifting of an internal climbing tower crane, comprising:

[0010] Step 1: Select and install the equipment used for adjustment during the lifting of the internal climbing tower crane;

[0011] Step 2: Preset the safety threshold through the central control module;

[0012] Step 3: Monitor the lifting process of the internal climbing tower crane in real time through the central control module;

[0013] Step 4: Execute the dynamic adjustment strategy through the central control module;

[0014] Step 5: The central control module initiates an emergency shutdown and manual intervention for the internal climbing tower crane.

[0015] Furthermore, step 1 specifically includes:

[0016] The selection and installation of the deviation detection module includes a laser displacement sensor connected to the PLC controller. Two sets of laser displacement sensors are installed at each joint of the guide rail of the overall mold frame system and the internal climbing tower crane lifting equipment. The two sets of laser displacement sensors are used to detect the radial deviation and angular deviation of the guide rail, respectively.

[0017] The deviation detection module also includes a dual-axis tilt sensor connected to the PLC controller. The dual-axis tilt sensor is fixed to the horizontal mounting plate at the top of the tower body of the internal climbing tower crane by bolts. The X-axis of the dual-axis tilt sensor is parallel to the direction of the guide rail.

[0018] Furthermore, step 1 specifically includes:

[0019] Selecting and installing the central control module, which includes a PLC controller;

[0020] The central control module also includes an HMI that connects to the PLC controller.

[0021] Furthermore, step 1 specifically includes:

[0022] The active adjustment module is selected and installed. The active adjustment module includes a guide rail jacking assembly connected to the PLC controller. The guide rail jacking assembly is installed in the reserved hole position of the adjustment plate of the overall formwork system and the internal climbing tower crane coordinated lifting equipment. The push rod end of the guide rail jacking assembly contacts the guide rail through a nylon pad.

[0023] The active adjustment module also includes a climbing frame level adjustment component connected to the PLC controller. The climbing frame level adjustment component is installed on the side ear plate of the upper climbing frame of the overall mold frame system and the internal climbing tower crane coordinated lifting equipment. The end of the hydraulic cylinder piston rod of the climbing frame level adjustment component contacts the guide rod of the guide rail.

[0024] Furthermore, in step 2, the safety threshold includes:

[0025] The radial deviation threshold for the guide rail is 2 mm / m;

[0026] The guide rail angle deviation threshold is 1°;

[0027] The tower tilt threshold for internal climbing tower cranes is 0.5°;

[0028] The climbing frame leveling adjustment component The hydraulic cylinder synchronization accuracy threshold is 0.2 mm / s, where The speed difference between the two hydraulic cylinders on both sides of the climbing frame horizontal adjustment assembly.

[0029] Furthermore, step 3 specifically includes:

[0030] Step 3-1: Start the lifting program. The deviation detection module collects data every 100ms and transmits it to the PLC controller.

[0031] Step 3-2: The central control module processes the data collected and transmitted, and calculates key parameters.

[0032] Furthermore, in step 3-1, the method of the deviation detection module collecting data once every 100ms and transmitting it to the PLC controller specifically includes:

[0033] Laser displacement sensor collects radial deviation value of guide rail and angular deviation value And transmit it to the PLC controller, where For the guide rail Radial deviation value at each detection point For the guide rail The angular deviation value of each detection point;

[0034] The tilt sensor outputs the real-time tilt angle of the tower. It is transmitted to the PLC controller along with the tilt direction.

[0035] Furthermore, in step 3-2, the key parameters include:

[0036] Average radial deviation of guide rail The calculation formula is as follows: ,in This represents the total number of detection points on the guide rail.

[0037] Maximum angular deviation of the guide rail The calculation formula is as follows: ,in For the MAX function;

[0038] Hydraulic cylinder synchronization error The calculation formula is as follows: ,in The speed of the left hydraulic cylinder of the climbing frame leveling assembly. The speed of the right hydraulic cylinder of the climbing frame horizontal adjustment component is collected by two speed sensors connected to the PLC controller, which collect the speeds of the left and right hydraulic cylinders respectively.

[0039] Furthermore, step 4 specifically includes:

[0040] The central control module is based on key parameters and The value is compared with a safety threshold to trigger different adjustment actions, as detailed below:

[0041] (1) Guide rail deviation adjustment, that is, in >2mm / m or Under conditions of >1°, a horizontal jacking force is applied to the guide rail on the deviation side by means of the guide rail jacking component in the active adjustment module. Correcting radial deviation; simultaneously adjusting the lifting speed of the corresponding hydraulic cylinder to compensate for angular deviation, and its horizontal thrust. The adjustment formula is:

[0042] ;

[0043] In the formula: This is the stiffness coefficient; The distance from the point of action of the jacking component to the deviation detection point;

[0044] The formula for calculating the hydraulic cylinder speed compensation is:

[0045] ;

[0046] In the formula: This is the reference speed for the hydraulic cylinder; The speed that needs to be increased or decreased for the hydraulic cylinder on the deviation side;

[0047] Next, the corresponding action is executed. The PLC controller of the central control module sends a command to the electric actuator on the deviation side, outputting a thrust F; simultaneously, it sends a signal to the proportional valve of the corresponding hydraulic cylinder to adjust the flow rate, so that the speed of the hydraulic cylinder is... ± until ≤2mm / m and ≤1°;

[0048] (2) Adjustment of tower tilt and eccentric load, i.e. >0.5° or Under conditions of >0.2mm / s, the tilting moment of the tower body is balanced by adjusting the difference in lifting speed between the two hydraulic cylinders; at the same time, the horizontal adjustment component of the climbing frame is activated to compensate for the horizontal eccentric load. The adjustment formula for the hydraulic cylinder speed difference correction is as follows:

[0049] ;

[0050] In the formula: The threshold for tower tilt; The speed at which the hydraulic cylinder needs to be increased in the opposite direction of tilting is required.

[0051] The formula for calculating the thrust of the horizontal adjusting cylinder is:

[0052] ;

[0053] In the formula: The total mass of the lifting section of the tower crane; It is the acceleration due to gravity; The thrust required to be output by the tilting cylinder in the opposite direction;

[0054] Next, the corresponding action is executed: the central control module adjusts the opening of the proportional valves of the two hydraulic cylinders to make the speed difference between them equal. Simultaneously, oil is supplied to the horizontally adjusting cylinder in the opposite tilting direction, outputting thrust. until ≤0.5° and ≤0.2mm / s.

[0055] Furthermore, step 5 specifically includes:

[0056] The central control module PLC controller will immediately trigger the internal climbing tower crane to shut down in an emergency when any of the following conditions are met:

[0057] Guide rail radial deviation >5mm / m or angular deviation >3°;

[0058] Tower tilt angle >1°;

[0059] The hydraulic cylinder pressure exceeds 1.2 times the rated pressure;

[0060] After shutdown, the central control module displays the deviation position through the human-machine interface (HMI).

[0061] The beneficial effects of the present invention are as follows, compared with the prior art:

[0062] High deviation correction accuracy: Through the cooperation of laser displacement sensor and electric push rod, the radial deviation correction accuracy of guide rail can reach ±0.5mm / m, and the angular deviation correction accuracy can reach ±0.2°, effectively avoiding jamming between clamping components and guide rail, and reducing the risk of guide rail deformation (deformation rate reduced from 15% of traditional methods to below 2%).

[0063] Strong off-center load control capability: Through hydraulic cylinder speed adjustment and horizontal cylinder thrust compensation, the tower tilt angle can be controlled within 0.5°, the hydraulic cylinder synchronization accuracy error is ≤0.1mm / s, the off-center load balance efficiency is improved by 80%, and the tower sway amplitude is significantly reduced (the maximum sway is reduced from 100mm to 30mm).

[0064] Construction efficiency is significantly improved: no manual downtime for inspection and calibration is required, the time for a single lift is reduced from the traditional 45 minutes to 30 minutes, and the number of lifts per day increases by more than 60%; at the same time, the frequency of high-altitude operations is reduced, and the operational risk is reduced by 50%.

[0065] Good compatibility: This method can be directly integrated into existing integrated formwork and internal climbing tower crane collaborative lifting equipment without large-scale modification of core components (such as climbing frame and hydraulic cylinder), and the modification cost only increases by 15%-20%, making it suitable for upgrading existing equipment. Attached Figure Description

[0066] Figure 1 This is a flowchart of the adjustment method used during the lifting of an internal climbing tower crane in this invention. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0068] like Figure 1 As shown, an adjustment method for use during the lifting of an internal climbing tower crane includes:

[0069] Based on the existing integrated formwork system and the internal climbing tower crane collaborative lifting equipment (including the integrated steel platform formwork, upper climbing frame, middle climbing frame, lower climbing frame, hydraulic lifting components including hydraulic cylinders, and guide rail guiding components including guide rails), a deviation detection module, a central control module, and an active adjustment module are added. The specific adjustment method includes the following steps:

[0070] Step 1: Select and install the equipment used for adjustment during the lifting of the internal climbing tower crane;

[0071] In a preferred but non-limiting embodiment of the present invention, step 1 specifically includes:

[0072] The deviation detection module is selected and installed. The deviation detection module includes a laser displacement sensor connected to the PLC controller. The laser displacement sensor model is HL-D1000, with a measurement range of 0-300mm and an accuracy of ±0.01mm. Two sets of laser displacement sensors are installed at each joint of the guide rail of the overall formwork system and the internal climbing tower crane lifting equipment. The two sets of laser displacement sensors are used to detect the radial deviation of the guide rail (radial is the X-axis direction, that is, the horizontal direction perpendicular to the tower body of the internal climbing tower crane) and the angular deviation (θ, the angle between the axis of the guide rail and the vertical direction).

[0073] The deviation detection module also includes a dual-axis tilt sensor connected to the PLC controller. The dual-axis tilt sensor is a Bosch BNO055 model with a measurement range of ±45° and an accuracy of ±0.1°. The dual-axis tilt sensor is fixed to the horizontal mounting plate at the top of the tower of the internal climbing tower crane by bolts. The X-axis of the dual-axis tilt sensor is parallel to the direction of the guide rail.

[0074] In a preferred but non-limiting embodiment of the present invention, step 1 further includes:

[0075] The central control module is selected and installed. The central control module includes a PLC controller, which is a Siemens S7-1200CPU1214C. It is equipped with an analog input module SM1231 (for acquiring sensor signals) and a digital output module SM1223 (for controlling actuators).

[0076] The central control module also includes an HMI connected to the PLC controller. The HMI model is Weintek TK6071IP, which is used to display real-time data, thresholds, and fault information collected by the deviation detection module.

[0077] In a preferred but non-limiting embodiment of the present invention, step 1 further includes:

[0078] The active adjustment module is selected and installed. The active adjustment module includes a guide rail jacking assembly connected to the PLC controller. The guide rail jacking assembly is a TOMUUU10 electric push rod with a thrust of 5kN and a stroke of 100mm. The guide rail jacking assembly is installed in the reserved hole position of the adjustment plate of the overall formwork system and the internal climbing tower crane lifting equipment. The push rod end of the guide rail jacking assembly contacts the guide rail through a nylon pad (to avoid scratching the guide rail).

[0079] The active adjustment module also includes a climbing frame level adjustment component connected to the PLC controller. The climbing frame level adjustment component is a HOB50×100 bidirectional hydraulic cylinder with a rated pressure of 21MPa and a thrust of 16kN. The climbing frame level adjustment component is installed on the side ear plate of the upper climbing frame of the overall mold frame system and the internal climbing tower crane coordinated lifting equipment. The end of the cylinder piston rod of the climbing frame level adjustment component contacts the guide rod of the guide rail.

[0080] Step 2: Preset the safety threshold through the central control module (using a PLC controller, model: S7-1200);

[0081] In a preferred but non-limiting embodiment of the present invention, in step 2, the safety threshold includes:

[0082] The radial deviation threshold for the guide rail is 2 mm / m;

[0083] The guide rail angle deviation threshold is 1°;

[0084] The tower tilt threshold for internal climbing tower cranes is 0.5°;

[0085] The climbing frame leveling adjustment component The hydraulic cylinder synchronization accuracy threshold is 0.2 mm / s, where The speed difference between the two hydraulic cylinders on both sides of the climbing frame horizontal adjustment assembly.

[0086] Step 3: Monitor the lifting process of the internal climbing tower crane in real time through the central control module;

[0087] In a preferred but non-limiting embodiment of the present invention, step 3 specifically includes:

[0088] Step 3-1: After starting the lifting program (the lifting program is the hydraulic cylinder of the overall formwork system and the internal climbing tower crane to lift the upper and middle climbing frames), the deviation detection module collects data once every 100ms and transmits it to the PLC controller.

[0089] In a preferred but non-limiting embodiment of the present invention, the method of the deviation detection module collecting data once every 100ms and transmitting it to the PLC controller in step 3-1 specifically includes:

[0090] Laser displacement sensor collects radial deviation value of guide rail and angular deviation value And transmit it to the PLC controller, where For the guide rail Radial deviation value at each detection point For the guide rail The angular deviation value of each detection point;

[0091] The tilt sensor outputs the real-time tilt angle of the tower. The direction of tilt (e.g., "+X direction" indicates that the guide rail deviation is greater on the side closer to the +X axis) is transmitted to the PLC controller.

[0092] Step 3-2: The central control module processes the data collected and transmitted, and calculates key parameters.

[0093] In a preferred but non-limiting embodiment of the present invention, the key parameters in step 3-2 include:

[0094] Average radial deviation of guide rail The calculation formula is as follows: ,in This represents the total number of detection points on the guide rail.

[0095] Maximum angular deviation of the guide rail The calculation formula is as follows: ,in For the MAX function;

[0096] Hydraulic cylinder synchronization error The calculation formula is as follows: ,in The speed of the left hydraulic cylinder of the climbing frame leveling assembly. The speed of the right hydraulic cylinder of the climbing frame horizontal adjustment component is collected by two speed sensors connected to the PLC controller, which collect the speeds of the left and right hydraulic cylinders respectively.

[0097] Step 4: Execute the dynamic adjustment strategy through the central control module;

[0098] In a preferred but non-limiting embodiment of the present invention, step 4 specifically includes:

[0099] The central control module is based on key parameters and The value is compared with a safety threshold to trigger different adjustment actions, as detailed below:

[0100] (1) Guide rail deviation adjustment, that is, in >2mm / m or Under conditions of >1°, a horizontal jacking force is applied to the guide rail on the deviation side by means of the guide rail jacking assembly in the active adjustment module (installed on the adjustment plate of the integrated steel platform formwork and driven by a miniature electric push rod (model: TOMUUU10)). Correcting radial deviation; simultaneously adjusting the lifting speed of the corresponding hydraulic cylinder to compensate for angular deviation, and its horizontal thrust. The adjustment formula is:

[0101] ;

[0102] In the formula: The stiffness coefficient is taken as 500 N / (mm·m), determined by the guide rail material (Q345B steel) and cross-sectional dimensions (150×100mm rectangular tube). The distance (m) from the point of action of the jacking component to the deviation detection point;

[0103] The formula for calculating the hydraulic cylinder speed compensation is:

[0104] ;

[0105] In the formula: This is the reference speed of the hydraulic cylinder (default 5mm / s); The speed that needs to be increased or decreased for the hydraulic cylinder on the deviation side ( If the result is positive, the speed needs to be reduced; (If the value is negative, the speed needs to be increased).

[0106] Next, the corresponding action is executed. The PLC controller of the central control module sends a command to the electric actuator on the deviation side, outputting a thrust F; simultaneously, it sends a signal to the proportional valve of the corresponding hydraulic cylinder to adjust the flow rate, so that the speed of the hydraulic cylinder is... ± until ≤2mm / m and ≤1°;

[0107] (2) Adjustment of tower tilt and eccentric load, i.e. >0.5° or Under conditions of >0.2mm / s, the tilting moment of the tower body is balanced by adjusting the difference in lifting speed between the two hydraulic cylinders; at the same time, the horizontal adjustment component of the climbing frame (installed on both sides of the upper climbing frame and driven by a two-way hydraulic cylinder (model: HOB50×100)) is activated to compensate for the horizontal off-center load. The adjustment formula for the hydraulic cylinder speed difference correction is as follows:

[0108] ;

[0109] In the formula: The tower tilt threshold (0.5°); The speed of the hydraulic cylinder in the opposite direction of tilting needs to be increased (e.g., if the tower body tilts in the +X direction, the speed of the hydraulic cylinder in the -X direction needs to be increased and the speed of the hydraulic cylinder in the +X direction needs to be decreased).

[0110] The formula for calculating the thrust of the horizontal adjusting cylinder is:

[0111] ;

[0112] In the formula: The total mass of the tower crane's lifting section (including the climbing frame and tower body, taken as 50t) The acceleration due to gravity is 9.8 m / s². The thrust required by the tilting cylinder in the opposite direction is used to counteract the tilting torque.

[0113] Next, the corresponding action is executed: the central control module adjusts the opening of the proportional valves of the two hydraulic cylinders to make the speed difference between them equal. Simultaneously, oil is supplied to the horizontally adjusting cylinder in the opposite tilting direction, outputting thrust. until ≤0.5° and ≤0.2mm / s.

[0114] Step 5: The central control module initiates an emergency shutdown and manual intervention for the internal climbing tower crane.

[0115] In a preferred but non-limiting embodiment of the present invention, step 5 specifically includes:

[0116] The central control module PLC controller will immediately trigger the internal climbing tower crane to shut down in an emergency when any of the following conditions are met:

[0117] Guide rail radial deviation >5mm / m or angular deviation >3° (out of adjustment range);

[0118] Tower tilt angle >1° (risk of overturning);

[0119] The hydraulic cylinder pressure exceeds the rated pressure by 1.2 times (model: CD250 hydraulic cylinder, rated pressure 21MPa, i.e., exceeds 25.2MPa).

[0120] After shutdown, the central control module displays the deviation position through the human-machine interface (HMI) to guide manual correction.

[0121] The following is an example of a specific embodiment of the present invention:

[0122] (I) Equipment Selection and Installation

[0123] Deviation detection module:

[0124] Two sets of laser displacement sensors (model: HL-D1000) connected to the PLC controller are installed at each section of the guide rail to detect the radial deviation (X-axis, horizontal direction perpendicular to the tower body) and angular deviation (θ, the angle between the guide rail axis and the vertical direction).

[0125] The dual-axis tilt sensor connected to the PLC controller is a Bosch BNO055. It has a measurement range of ±45° and an accuracy of ±0.1°. It is fixed to the horizontal mounting plate at the top of the tower with bolts, and the X-axis is parallel to the guide rail.

[0126] Central control module:

[0127] PLC controller: Siemens S7-1200CPU1214C, equipped with analog input module SM1231 (for acquiring sensor signals) and digital output module SM1223 (for controlling actuators).

[0128] The HMI connected to the PLC controller is a Weintek TK6071IP, used to display real-time data, thresholds, and fault information.

[0129] Active adjustment module:

[0130] Guide rail push assembly: TOMUUU10 electric push rod, thrust 5kN, stroke 100mm, installed in the reserved hole position of adjustment plate 172, the end of the push rod contacts the guide rail through a nylon pad (to avoid scratching the guide rail).

[0131] The climbing frame level adjustment assembly is a HOB50×100 two-way hydraulic cylinder with a rated pressure of 21MPa and a thrust of 16kN. It is installed on the side ear plate of the upper climbing frame 21, and the end of the cylinder piston rod contacts the guide rail guide rod 3111.

[0132] (II) Example of Implementation Steps

[0133] Taking the internal tower crane lifting of a super high-rise project (core tube height 300m) as an example, the specific implementation process is as follows:

[0134] Preparations before construction:

[0135] Install sensors and control components, and preset safety thresholds via HMI;

[0136] Initiate a no-load test, manually adjust the guide rail deviation to 3mm / m, and verify whether the adjustment module can... Correct to within 2 mm / m (correction time is about 15 seconds).

[0137] Official Promotion:

[0138] Start the hydraulic cylinder lifting program, reference speed =5mm / s;

[0139] When lifted to a height of 10m, the laser displacement sensor detected the average deviation of the +X guide rail. =3.5mm / m, =1.5°; tilt sensor detected =0.8° (+X-axis tilt);

[0140] Central control module calculations:

[0141] Top thrust =500×3.5×2=3500N ( =2m);

[0142] Hydraulic cylinder speed compensation =5×tan1.5°≈0.13mm / s (The speed of the +X hydraulic cylinder needs to be reduced to 5-0.13=4.87mm / s).

[0143] Speed ​​difference correction =5×(0.8 / 0.5)=8mm / s (The speed of the -X hydraulic cylinder needs to be increased to 5+8=13mm / s, and the speed of the +X hydraulic cylinder needs to be decreased to 4.87-8=-3.13mm / s, in reality...) It should not exceed 50%, therefore take =2mm / s, that is, -X direction velocity 5.2mm / s, +X direction velocity 4.8mm / s).

[0144] Horizontal adjustment cylinder thrust =50×10³×9.8×sin0.8°≈50×10³×9.8×0.014≈6860N;

[0145] Adjustment: The +X direction electric actuator outputs a thrust of 3500N, the speed of the two hydraulic cylinders is adjusted to 5.2mm / s (-X direction) and 4.8mm / s (+X direction), and the -X direction horizontal adjustment cylinder outputs a thrust of 6860N;

[0146] After continuous monitoring for 10 seconds, =1.8mm / m, =0.8°, =0.4°, the central control module restores the baseline speed increase.

[0147] Upgrade complete:

[0148] Repeat step 3 until the tower crane is lifted to the target height (300m). There are no jams or off-center load alarms throughout the process, and the number of lifting times per day has been increased from 8 times in the traditional method to 13 times.

[0149] The beneficial effects of the present invention are as follows, compared with the prior art:

[0150] High deviation correction accuracy: Through the cooperation of laser displacement sensor and electric push rod, the radial deviation correction accuracy of guide rail can reach ±0.5mm / m, and the angular deviation correction accuracy can reach ±0.2°, effectively avoiding jamming between clamping components and guide rail, and reducing the risk of guide rail deformation (deformation rate reduced from 15% of traditional methods to below 2%).

[0151] Strong off-center load control capability: Through hydraulic cylinder speed adjustment and horizontal cylinder thrust compensation, the tower tilt angle can be controlled within 0.5°, the hydraulic cylinder synchronization accuracy error is ≤0.1mm / s, the off-center load balance efficiency is improved by 80%, and the tower sway amplitude is significantly reduced (the maximum sway is reduced from 100mm to 30mm).

[0152] Construction efficiency is significantly improved: no manual downtime for inspection and calibration is required, the time for a single lift is reduced from the traditional 45 minutes to 30 minutes, and the number of lifts per day increases by more than 60%; at the same time, the frequency of high-altitude operations is reduced, and the operational risk is reduced by 50%.

[0153] Good compatibility: This method can be directly integrated into existing integrated formwork and internal climbing tower crane collaborative lifting equipment without large-scale modification of core components (such as climbing frame and hydraulic cylinder), and the modification cost only increases by 15%-20%, making it suitable for upgrading existing equipment.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention without departing from the spirit and scope of the present invention. Any modifications or equivalent substitutions should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for adjustment during the lifting of an internal climbing tower crane, characterized in that, include: Step 1: Select and install the equipment used for adjustment during the lifting of the internal climbing tower crane; Step 2: Preset the safety threshold through the central control module; Step 3: Monitor the lifting process of the internal climbing tower crane in real time through the central control module; Step 4: Execute the dynamic adjustment strategy through the central control module; Step 5: The central control module initiates an emergency shutdown and manual intervention for the internal climbing tower crane; Step 3 specifically includes: Step 3-1: Start the lifting program. The deviation detection module collects data every 100ms and transmits it to the PLC controller. Step 3-2: The central control module processes the data collected and transmitted, and calculates key parameters; In step 3-1, the method of the deviation detection module collecting data once every 100ms and transmitting it to the PLC controller specifically includes: Laser displacement sensor collects radial deviation value of guide rail and angular deviation value And transmit it to the PLC controller, where For the guide rail Radial deviation value at each detection point For the guide rail The angular deviation value of each detection point; The tilt sensor outputs the real-time tilt angle of the tower. The tilt direction is transmitted to the PLC controller; In step 3-2, the key parameters include: Average radial deviation of guide rail The calculation formula is as follows: ,in This represents the total number of detection points on the guide rail. Maximum angular deviation of the guide rail The calculation formula is as follows: ,in For the MAX function; Hydraulic cylinder synchronization error The calculation formula is as follows: ,in The speed of the left hydraulic cylinder of the climbing frame leveling assembly. The speed of the right hydraulic cylinder of the climbing frame horizontal adjustment component is collected by two speed sensors connected to the PLC controller, which are used to collect the speeds of the left and right hydraulic cylinders respectively. Step 4 specifically includes: The central control module is based on key parameters and The value is compared with a safety threshold to trigger different adjustment actions, as detailed below: (1) Guide rail deviation adjustment, that is, in >2mm / m or Under conditions of >1°, a horizontal jacking force is applied to the guide rail on the deviation side by means of the guide rail jacking component in the active adjustment module. Correcting radial deviation; simultaneously adjusting the lifting speed of the corresponding hydraulic cylinder to compensate for angular deviation, and its horizontal thrust. The adjustment formula is: ； In the formula: This is the stiffness coefficient; The distance from the point of action of the jacking component to the deviation detection point; The formula for calculating the hydraulic cylinder speed compensation is: ； In the formula: This is the reference speed for the hydraulic cylinder; The speed that needs to be increased or decreased for the hydraulic cylinder on the deviation side; Next, the corresponding action is executed. The PLC controller of the central control module sends a command to the electric actuator on the deviation side, outputting a thrust F; simultaneously, it sends a signal to the proportional valve of the corresponding hydraulic cylinder to adjust the flow rate, so that the speed of the hydraulic cylinder is... ± until ≤2mm / m and ≤1°; (2) Adjustment of tower tilt and eccentric load, i.e. >0.5° or Under conditions of >0.2mm / s, the tilting moment of the tower body is balanced by adjusting the difference in lifting speed between the two hydraulic cylinders; at the same time, the horizontal adjustment component of the climbing frame is activated to compensate for the horizontal eccentric load. The adjustment formula for the hydraulic cylinder speed difference correction is as follows: ； In the formula: The threshold for tower tilt; The formula for calculating the thrust of the horizontal adjusting cylinder, which is the speed required to increase in the hydraulic cylinder in the opposite tilting direction, is as follows: ； In the formula: The total mass of the lifting section of the tower crane; It is the acceleration due to gravity; The thrust required to be output by the tilting cylinder in the opposite direction; Next, the corresponding action is executed: the central control module adjusts the opening of the proportional valves of the two hydraulic cylinders to make the speed difference between them equal. Simultaneously, oil is supplied to the horizontally adjusting cylinder in the opposite tilting direction, outputting thrust. until ≤0.5° and ≤0.2mm / s.

2. The adjustment method for internal climbing tower cranes during hoisting according to claim 1, characterized in that, Step 1 specifically includes: The selection and installation of the deviation detection module includes a laser displacement sensor connected to the PLC controller. Two sets of laser displacement sensors are installed at each joint of the guide rail of the overall mold frame system and the internal climbing tower crane lifting equipment. The two sets of laser displacement sensors are used to detect the radial deviation and angular deviation of the guide rail, respectively. The deviation detection module also includes a dual-axis tilt sensor connected to the PLC controller. The dual-axis tilt sensor is fixed to the horizontal mounting plate at the top of the tower body of the internal climbing tower crane by bolts. The X-axis of the dual-axis tilt sensor is parallel to the direction of the guide rail.

3. The adjustment method for internal climbing tower cranes during hoisting according to claim 2, characterized in that, Step 1 also includes: Selecting and installing the central control module, which includes a PLC controller; The central control module also includes an HMI that connects to the PLC controller.

4. The adjustment method for internal climbing tower crane lifting according to claim 3, characterized in that, Step 1 also includes: The active adjustment module is selected and installed. The active adjustment module includes a guide rail jacking assembly connected to the PLC controller. The guide rail jacking assembly is installed in the reserved hole position of the adjustment plate of the overall formwork system and the internal climbing tower crane coordinated lifting equipment. The push rod end of the guide rail jacking assembly contacts the guide rail through a nylon pad. The active adjustment module also includes a climbing frame level adjustment component connected to the PLC controller. The climbing frame level adjustment component is installed on the side ear plate of the upper climbing frame of the overall mold frame system and the internal climbing tower crane coordinated lifting equipment. The end of the hydraulic cylinder piston rod of the climbing frame level adjustment component contacts the guide rod of the guide rail.

5. The adjustment method for internal climbing tower cranes during hoisting according to claim 4, characterized in that, In step 2, the safety threshold includes: The radial deviation threshold for the guide rail is 2 mm / m; The guide rail angle deviation threshold is 1°; The tower tilt threshold for internal climbing tower cranes is 0.5°; The climbing frame leveling adjustment component The hydraulic cylinder synchronization accuracy threshold is 0.2 mm / s, where The speed difference between the two hydraulic cylinders on both sides of the climbing frame horizontal adjustment assembly.

6. The adjustment method for internal climbing tower crane lifting according to claim 5, characterized in that, Step 5 specifically includes: The central control module PLC controller will immediately trigger the internal climbing tower crane to shut down in an emergency when any of the following conditions are met: Guide rail radial deviation >5mm / m or angular deviation >3°; Tower tilt angle >1°; The hydraulic cylinder pressure exceeds 1.2 times the rated pressure; After shutdown, the central control module displays the deviation position through the human-machine interface (HMI).

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