A tower crane pre-buried outrigger intelligent monitoring and regulation device

Abstract

This invention discloses an intelligent monitoring and control device for pre-embedded outriggers of tower cranes, belonging to the technical field of construction equipment. It includes: outriggers and outrigger connecting plates fixedly installed on the outriggers; a data acquisition unit installed on the outrigger connecting plate, comprising: an inclinometer for acquiring the horizontal tilt angle of the outriggers, a hydrostatic level for acquiring the verticality of the outriggers, and a camera for acquiring image data of the foundation platform surface; an execution unit, comprising: at least three servo cylinders installed on the foundation platform, the output ends of which are rotatably connected to the outrigger connecting plate via pins; and a data processing terminal for calculating the extension amount of the servo cylinders at the corresponding outriggers based on the data acquired by the inclinometer and hydrostatic level, and controlling the extension of the servo cylinders to adjust the horizontal and verticality of the outriggers. This invention achieves real-time monitoring and active control from concrete pouring to final setting.

Description

Technical Field

[0001] This invention belongs to the field of building construction equipment technology, specifically relating to an intelligent monitoring and control device for tower crane embedded legs. It is particularly suitable for real-time monitoring, active correction, and foundation safety early warning of the spatial status of embedded legs during the critical stage from concrete pouring to final setting. Background Technology

[0002] As a core vertical transportation device in modern construction, the safe operation of tower cranes is of paramount importance. The verticality of the tower is fundamental to ensuring the safe operation of the crane, and the initial accuracy of verticality is directly determined by the relative height difference and levelness of the four legs embedded in the concrete foundation. With the acceleration of urbanization, high-rise and super high-rise buildings and complex, large-span structures are increasingly common, placing higher demands on the precision and reliability of tower crane foundation construction. Even a slight deviation in height can lead to difficulties in tower installation and even generate huge eccentric bending moments during subsequent use, causing serious safety accidents. Therefore, ensuring the installation accuracy of the embedded legs is the primary prerequisite for the safe use of tower cranes.

[0003] In existing technologies, the adjustment of the pre-embedded outriggers of tower cranes mainly relies on "pre-construction control" methods before concrete pouring. For example, Chinese patent CN119349441B discloses a device for adjusting the levelness of the foundation outriggers of a tower crane, which uses mechanical adjusting bolts to perform precision leveling before concrete pouring. However, such methods cannot address the problems that arise during concrete pouring and curing. The specific drawbacks are as follows: First, the mechanical impact during concrete vibration, the volume changes caused by the heat of hydration during the initial and final setting stages of concrete, and uneven settlement all alter the state of the leveled support legs, and existing technologies lack effective "in-process control" methods. Second, after the initial setting of concrete, the surface of the foundation cannot support personnel and measuring equipment, resulting in a significant delay in measurement and an inability to obtain real-time data during the critical period when support leg deviation occurs (the plastic stage of concrete). Third, once the support legs are found to be out of tolerance after the final setting of concrete, the correction methods are extremely limited and costly, requiring either the customization of special non-standard correction joints or the complete demolition and reconstruction of the foundation foundation, causing delays and a surge in costs. Fourth, existing technologies cannot provide real-time monitoring and early warning of excessive or rapid settlement or surface cracking that may occur in the foundation foundation (especially lattice column foundations) during the concrete strength formation process, resulting in significant safety blind spots.

[0004] Therefore, there is an urgent need for an intelligent device that can continuously and accurately monitor the status of the embedded outriggers after the concrete of the tower crane foundation is poured and before it sets, and can actively and precisely adjust the structure when deviations are detected. This device should also have a foundation structure safety early warning function to fill the technical gap in "in-process control" and fundamentally improve the safety and reliability of tower crane foundation construction. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an intelligent monitoring and control device for pre-embedded outriggers of tower cranes, which solves the technical problem that existing tower crane pre-embedded outriggers lack effective monitoring and control methods during the process from concrete pouring to final setting, resulting in the inability to correct outrigger displacement and the inability to provide early warning of foundation safety.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses an intelligent monitoring and control device for pre-embedded outriggers of tower cranes, comprising: The support legs embedded in the concrete foundation platform and the support leg connecting plates fixedly installed on the support legs; A data acquisition unit installed on the outrigger connecting plate includes: an inclinometer for acquiring the horizontal tilt angle of the outrigger, a static level for acquiring the verticality of the outrigger, and a camera for acquiring image data of the foundation platform surface. An execution unit, comprising: at least three servo electric cylinders mounted on a foundation platform, wherein the output end of each servo electric cylinder is rotatably connected to a leg connecting plate via a pin. The data processing terminal is used to calculate the extension amount of the servo electric cylinder at the corresponding outrigger based on the data collected by the inclinometer and the hydrostatic level, and to control the extension of the servo electric cylinder to adjust the horizontality and verticality of the outrigger.

[0007] Furthermore, an alarm is installed on the outrigger connecting plate. When the horizontal or vertical error of the outrigger exceeds a preset value, a concrete settlement alarm signal is issued on the screen of the data processing terminal; when the camera captures dents or cracks on the surface of the foundation platform, a concrete cracking alarm signal is issued on the screen of the data processing terminal.

[0008] Furthermore, the outrigger connecting plate is fixedly connected with a reinforcing lug corresponding to each servo electric cylinder. The reinforcing lug is provided with a connecting hole for installing a pin. The diameter of the connecting hole is larger than the diameter of the pin, and there is a gap between the pin and the inner wall of the connecting hole before the servo electric cylinder performs the extension action.

[0009] Furthermore, the support legs are provided with four legs, and the connecting plates of two adjacent support legs are symmetrically arranged about the central axis formed by the four support legs. The hydrostatic level on the connecting plates of two adjacent support legs is connected to the water and air interfaces of the hydrostatic level through a connecting pipe.

[0010] Furthermore, the data processing terminal processes data as follows: Based on the three-point plane determination method, the first... Inclinometers at each outrigger collected data about the first outrigger. The amount of extension required for each servo electric cylinder ; and based on the relative height difference data from the hydrostatic level on each leg. Calculate the first The first outrigger The total amount that each servo electric cylinder needs to extend .

[0011] Furthermore, three reinforcing ear plates are provided, which are arranged around the plane formed by the four legs. Specifically, one reinforcing ear plate is provided on the first side wall of the leg connecting plate, and two reinforcing ear plates are provided on the second side wall of the leg connecting plate.

[0012] The beneficial effects of this invention are as follows: This invention enables real-time monitoring and active control of concrete from pouring to final setting, filling the technical gap in traditional methods that only have "pre-construction control" and "post-construction correction" but lack "in-process control". Attached Figure Description

[0013] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration: Figure 1 This is a side view of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the installation of the outrigger and the outrigger connecting plate according to an embodiment of the present invention; Figure 3 This is a top view of the overall structure of an embodiment of the present invention; Figure 4 This is a schematic diagram of the support leg connecting plate according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation of the servo electric cylinder according to an embodiment of the present invention.

[0014] The following are the markings in the attached diagram: 1. Outrigger; 2. Outrigger connecting plate; 201. Reinforcing ear plate; 202. Connecting hole; 3. Inclinometer; 4. Static level; 5. Camera; 6. Servo cylinder; 6. Pin shaft; 601. Detailed Implementation

[0015] like Figures 1-5 As shown, this invention discloses an intelligent monitoring and control device for pre-embedded outriggers of tower cranes, comprising: The support leg 1 is embedded in the concrete foundation platform and the support leg connecting plate 2 is fixedly installed on the support leg 1; The data acquisition unit installed on the outrigger connecting plate 2 includes: an inclinometer 3 for acquiring the horizontal tilt angle of the outrigger 1, a static level 4 for acquiring the verticality of the outrigger 1, and a camera 5 for acquiring image data of the foundation platform surface. An execution unit, comprising: at least three servo electric cylinders 6 mounted on a foundation platform, wherein the output end of the servo electric cylinders 6 is rotatably connected to the leg connecting plate 2 via a pin 601; The data processing terminal is used to calculate the extension amount of the servo electric cylinder 6 at the corresponding outrigger 1 based on the data collected by the inclinometer 3 and the hydrostatic level 4, and to control the extension of the servo electric cylinder 6 to adjust the horizontality and verticality of the outrigger 1.

[0016] In this scheme, an inclinometer 3 is installed on the outrigger connecting plate 2 to collect the changes in the horizontal inclination angle of the outrigger in the concrete foundation platform in real time. At the same time, a static level 4 measures the relative vertical height difference between each outrigger 1 through the principle of connecting pipes, and a camera 5 continuously captures images of the foundation platform surface. After receiving the above three types of data, the data processing terminal calculates the tilt direction and amplitude of each outrigger 1 in the horizontal plane based on the inclination angle data, calculates the settlement or lifting amount of each outrigger based on the data from the static level 4, and then calculates the precise extension length required for each servo electric cylinder 6. After receiving the command, the servo electric cylinder 6 pushes the outrigger connecting plate 2, causing the pre-embedded outrigger 1 to produce a small displacement in the concrete that has not yet fully set, thereby simultaneously correcting the horizontality and verticality of the outrigger, so that the spatial posture of the four outriggers 1 is restored to the allowable error range. This realizes real-time monitoring and active control from the time the concrete is poured until it is fully set, filling the technical gap of traditional methods that only have "pre-control" and "post-correction" but lack "in-process control".

[0017] In one embodiment of the present invention, an alarm is installed on the outrigger connecting plate 2. When the horizontal or vertical error of the outrigger 1 exceeds a preset value, a concrete settlement alarm signal is issued on the screen of the data processing terminal; when the camera 5 detects dents or cracks on the surface of the foundation platform, a concrete cracking alarm signal is issued on the screen of the data processing terminal.

[0018] In this solution, when the inclinometer 3 or the hydrostatic level 4 detects that the horizontal or vertical deviation of any leg exceeds a preset threshold, the data processing terminal immediately displays a concrete settlement alarm signal on the screen, and the alarm also emits an audible and visual alert. When the image captured by the camera 5 is identified by the recognition algorithm as having a depression or crack on the surface of the foundation cap, the terminal screen also emits a concrete cracking alarm signal. Through this graded and categorized alarm mechanism, managers can remotely obtain information about abnormal foundation conditions without having to be stationed on-site for extended periods. This allows for timely measures such as grouting, reinforcement, or adjustment before the concrete sets, avoiding foundation scrapping or tower installation difficulties caused by delayed detection and significantly improving the safety of foundation construction.

[0019] In one embodiment of the present invention, a reinforcing lug 201 corresponding to a servo cylinder 6 is fixedly connected to the outrigger connecting plate 2. The reinforcing lug 201 has a connecting hole 202 for mounting a pin 601. The diameter of the connecting hole 202 is larger than the diameter of the pin 601, and a gap exists between the pin 601 and the inner wall of the connecting hole 202 before the servo cylinder 6 extends. That is, the pin 601 does not contact the connecting hole 202. During the extension process of each servo cylinder 6, the pin 601 contacts the connecting hole 202 and receives force feedback before extending by the corresponding amount.

[0020] In this design, the diameter of the connecting hole 202 on the reinforcing ear plate 201 is designed to be larger than the diameter of the pin 601, so that a certain initial gap is maintained between the pin 601 and the inner wall of the connecting hole 202 before the servo cylinder 6 performs the extension action. When adjustment is required, the servo cylinder 6 first slowly extends until the pin 601 contacts the inner wall of the connecting hole 202. After the built-in force sensor feeds back the contact signal, the precise extension amount is output. This two-stage action mode of "contact first, then adjust" avoids the invalid movement of the servo cylinder 6 during its idle stroke and ensures that the starting reference for each adjustment is consistent. At the same time, the existence of the gap ensures that the servo cylinder 6 will not bear unexpected loads due to the deformation of the reinforcing cage or the expansion and contraction of the concrete during the concrete pouring and curing process, thereby protecting the precision transmission components of the cylinder and extending the service life of the device.

[0021] In one embodiment of the present invention, four support legs 1 are provided, and two adjacent support leg connecting plates 2 are symmetrically arranged about the central axis formed by the four support legs 1. The static level 4 on the two adjacent support leg connecting plates 2 is connected to the water and air interfaces of the static level 4 through a connecting pipe.

[0022] In this scheme, through this symmetrical layout and the series connection of the connecting pipes, all the hydrostatic level instruments 4 form a unified communicating vessel system. The slight settlement of any leg will cause the redistribution of the liquid surface pressure in the entire system. The data processing terminal can accurately calculate the relative height difference between the four legs 1 based on the pressure difference of each measuring point. The symmetrical arrangement also makes the force on each servo electric cylinder more balanced during the adjustment process, avoiding local cracking of concrete caused by eccentric loading and ensuring the overall stability of the foundation.

[0023] In one embodiment of the present invention, the data processing terminal processes data as follows: Based on the three-point plane determination method, the first... The inclinometer 3 at point 1 of each outrigger collected data regarding the first... The extension amount required for each servo electric cylinder 6 ; and based on the relative height difference data from the hydrostatic level 4 on each outrigger 1. Calculate the first The first support leg at point 1 The total amount that each servo electric cylinder needs to extend .

[0024] In this scheme, the data processing terminal targets the first... For each outrigger, firstly, based on the bidirectional tilt data collected by the inclinometer on that outrigger, the angle at which the outrigger is located is calculated using the three-point plane geometry principle. Each servo electric cylinder extends individually to restore horizontality. Simultaneously, based on the relative elevation difference data of the outrigger and the common benchmark point using a static level, The same additional amount required for all servo electric cylinders on the outrigger to extend synchronously to correct for vertical settlement was calculated. Finally, the two are added together to obtain the total. As the first The execution instructions of each servo electric cylinder; this control strategy of independently solving and superimposing the "horizontal correction amount" and "vertical correction amount" decomposes the spatial attitude adjustment of the outrigger into two independent control problems in two orthogonal directions, which simplifies the algorithm complexity while ensuring the adjustment accuracy.

[0025] In one embodiment of the present invention, three reinforcing ear plates 201 are provided, and the three reinforcing ear plates 201 are provided on the outer periphery of the plane formed by the four legs 1. The first side wall of the leg connecting plate 2 is provided with one reinforcing ear plate 201, and the second side wall of the leg connecting plate 2 is provided with two reinforcing ear plates 201.

[0026] In this design, the three reinforcing lugs 201 are all located on the outer perimeter of the plane formed by the four outriggers 1. This asymmetrical triangular layout of "one on one side and two on the other side" makes the projection of the three servo cylinders 6 on the horizontal plane form a right triangle. Two of the servo cylinders 6 are located on the same side of the outrigger 1 to control the tilt along the direction of the tower crane boom, and the other servo cylinder 6 is located on the opposite side to control the tilt perpendicular to the direction of the boom. Compared with a symmetrical equilateral triangular layout, this layout is closer to the actual force direction of the tower crane (the main overturning moment comes from the direction of the boom), while reducing the probability of interference between the servo cylinders 6 and the foundation reinforcement, which facilitates on-site installation and subsequent maintenance.

[0027] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A smart monitoring and control device for pre-embedded outriggers of tower cranes, characterized in that, include: The support legs embedded in the concrete foundation platform and the support leg connecting plates fixedly installed on the support legs; A data acquisition unit installed on the outrigger connecting plate includes: an inclinometer for acquiring the horizontal tilt angle of the outrigger, a static level for acquiring the verticality of the outrigger, and a camera for acquiring image data of the foundation platform surface. An execution unit, comprising: at least three servo electric cylinders mounted on a foundation platform, wherein the output end of each servo electric cylinder is rotatably connected to a leg connecting plate via a pin. The data processing terminal is used to calculate the extension amount of the servo electric cylinder at the corresponding outrigger based on the data collected by the inclinometer and the hydrostatic level, and to control the extension of the servo electric cylinder to adjust the horizontality and verticality of the outrigger.

2. The intelligent monitoring and control device for pre-embedded outriggers of tower cranes according to claim 1, characterized in that: An alarm is installed on the outrigger connecting plate. When the horizontal or vertical error of the outrigger exceeds the preset value, a concrete settlement alarm signal is issued on the screen of the data processing terminal. When the camera captures dents or cracks on the surface of the foundation, a concrete cracking alarm signal is issued on the screen of the data processing terminal.

3. The intelligent monitoring and control device for pre-embedded outriggers of tower cranes according to claim 1, characterized in that: The outrigger connecting plate is fixedly connected with a reinforcing lug corresponding to each servo electric cylinder. The reinforcing lug is provided with a connecting hole for installing a pin. The diameter of the connecting hole is larger than the diameter of the pin, and there is a gap between the pin and the inner wall of the connecting hole before the servo electric cylinder performs the extension action.

4. The intelligent monitoring and control device for pre-embedded outriggers of tower cranes according to claim 1, characterized in that: The support legs are provided with four legs, and the connecting plates of two adjacent support legs are symmetrically arranged about the central axis formed by the four support legs. The static level on the connecting plates of two adjacent support legs is connected to the water and air interfaces of the static level through a connecting pipe.

5. The intelligent monitoring and control device for pre-embedded outriggers of tower cranes according to claim 1, characterized in that: The data processing terminal processes data as follows: Based on the three-point plane determination method, the first... Inclinometers at each outrigger collected data about the first outrigger. The amount of extension required for each servo electric cylinder ; And based on the relative height difference data from the hydrostatic level on each leg. Calculate the first The first outrigger The total amount that each servo electric cylinder needs to extend .

6. The intelligent monitoring and control device for pre-embedded outriggers of tower cranes according to claim 1, characterized in that: The reinforcing lugs are provided in three parts, which are arranged around the plane formed by the four legs. Specifically, the first side wall of the leg connecting plate is provided with one reinforcing lug, and the second side wall of the leg connecting plate is provided with two reinforcing lugs.

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