Lifting pile safety monitoring and adjusting device, system and method

Abstract

The invention relates to the technical field of lifting piles, in particular to a lifting pile safety monitoring and adjusting device, system and method. The adjusting device comprises a first sling and a second sling which are used for jointly connecting the pile body and are parallel to each other; the first driving mechanism is used for winding and unwinding the first sling; the second driving mechanism is used for winding and unwinding the second sling; the device further comprises a sensor and a processor, the sensor is used for collecting tension on the first sling and the second sling, and the processor is connected with the first driving mechanism and the second driving mechanism. The processor adjusts the retracting and releasing speed of the first driving mechanism and / or the second driving mechanism according to the tension data collected by the sensor. The lifting pile safety monitoring and adjusting device can automatically adjust the pulling force on the two slings and the inclination angle of the lifting pile in the pile lifting process, can reduce manual intervention and improve the construction efficiency, has the advantages of being simple in structure and low in cost, and has high popularization value.

Description

Technical Field

[0001] The present invention relates to the technical field of pile hoisting, and particularly to a device, a system and a method for monitoring and adjusting the safety of pile hoisting. Background Art

[0002] Pile hoisting projects are widely used in multiple fields such as construction, infrastructure construction, bridges, offshore platforms, and foundation reinforcement. During the pile foundation construction process, the hoisting of the pile body is a key link. Especially in large-scale or special environment engineering projects, the safety, accuracy, and efficiency of pile hoisting directly affect the construction progress and project quality. With the expansion of the project scale and the progress of construction technology, pile hoisting technology is also constantly developing. However, in practical applications, there are still some safety hazards and operation problems during the pile hoisting process, which urgently need to be solved.

[0003] In traditional pile hoisting operations, the pile body is usually hoisted by a hoisting device, and ropes, steel cables or steel strands are used for hoisting. In some difficult construction environments, such as deep foundation pits, offshore platforms, etc., the hoisting of the pile body requires particularly precise control to ensure the verticality and stability of the pile body. For this reason, two symmetric steel strands are usually used for hoisting, and the steel strands are controlled to be retracted and released by a motor drive, so that the pile body can maintain balance during hoisting and the hoisting error can be reduced as much as possible. However, traditional pile hoisting operations usually adopt the method of manual intervention and adjustment. The pile hoisting process usually relies on experienced operators for real-time adjustment. Although there is a certain amount of experience accumulation, due to factors such as complex on-site environment and differences in operator capabilities, the operation difficulty is relatively large, and it may lead to low hoisting efficiency. Especially in high-risk construction environments, manual intervention is frequent, and it is difficult to ensure the accuracy and safety of the operation. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems of frequent manual intervention and adjustment operations and low construction efficiency in the background art, and to provide a device, a system and a method for monitoring and adjusting the safety of pile hoisting.

[0005] In a first aspect, the present invention provides a device for monitoring and adjusting the safety of pile hoisting, including: A first sling and a second sling for jointly connecting the pile body, the first sling and the second sling being parallel to each other; A first driving mechanism for retracting and releasing the first sling; A second driving mechanism for retracting and releasing the second sling; A monitoring unit including a sensor and a processor, the sensor being used to collect the tension on the first sling and the second sling, and the processor being connected to the first driving mechanism and the second driving mechanism; The processor adjusts the retracting and releasing rates of the first driving mechanism and / or the second driving mechanism according to the tension data collected by the sensor.

[0006] For the pile hoisting safety monitoring and adjustment device of the present invention, the processor can adjust the retracting and paying-out speeds of the first driving mechanism and / or the second driving mechanism according to the tensile force data collected by the sensor, so that there is a difference in the retracting and paying-out speeds of the first driving mechanism and the second driving mechanism. Through this difference, the height difference between the connection point of the first sling and the pile body and the connection point of the second sling and the pile body can be changed, so that the gravity of the pile body is redistributed between the two slings, thereby reducing the maximum tensile force on the two slings, and thus reducing the risk of a single sling breaking due to exceeding the stress limit. Moreover, the first sling and the second sling are arranged in parallel. By changing the height difference between the connection points of the first sling, the second sling and the pile body, the inclination of the pile body generated during hoisting can be corrected, which is beneficial to avoiding safety risks caused by excessive inclination of the pile body.

[0007] The pile hoisting safety monitoring and adjustment device of the present invention can automatically adjust the tensile forces on the two slings during pile hoisting and the inclination angle of the pile hoisting, can reduce manual intervention, improve construction efficiency, and has the advantages of simple structure and low cost, and has high popularization value.

[0008] Preferably, the retracting and paying-out speeds include the rope retracting speed corresponding to lifting the pile body and the rope paying-out speed corresponding to lowering the pile body.

[0009] Preferably, when the tensile force on the first sling collected by the sensor exceeds the preset tensile force threshold, the processor at least performs one of the following operations: A. Send an instruction to the first driving mechanism to reduce the rope retracting speed or increase the rope paying-out speed; B. Send an instruction to the second driving mechanism to increase the rope retracting speed or reduce the rope paying-out speed.

[0010] Preferably, the sensor includes a first tensiometer and a second tensiometer. The first tensiometer is arranged on the first sling, and the second tensiometer is arranged on the second sling; both the first tensiometer and the second tensiometer are signal-connected to the processor.

[0011] Preferably, it further includes a memory that can record the historical data of the first tensiometer and the second tensiometer.

[0012] Preferably, it further includes an alarm. The alarm is connected to the monitoring unit. When the tensile force collected by the sensor is greater than the preset alarm threshold, the alarm emits an alarm signal.

[0013] In a second aspect, the present invention provides a pile hoisting safety monitoring and adjustment system, including a pile body and the pile hoisting safety monitoring and adjustment device as described above; On opposite sides of the pile body, a first connection structure and a second connection structure are respectively arranged. The first sling is connected to the first connection structure, and the second sling is connected to the second connection structure. Both the second sling and the first sling are vertically arranged.

[0014] For the pile hoisting safety monitoring and adjustment system of the present invention, when using the pile hoisting safety monitoring and adjustment device as described above to hoist the pile body, it can effectively balance the force distribution on the two slings during the pile hoisting process, reduce the risk of sling breakage and the risk of damage to the pile body due to uneven force, and can automatically adjust the posture of the pile body to reduce the inclination amplitude of the pile body during hoisting.

[0015] Preferably, it further includes a collar sleeved on the pile body. The first connection structure and the second connection structure are arranged on the loop line of the collar, and the connection line of the first connection structure and the second connection structure passes through the center of the collar.

[0016] Preferably, the first sling is connected to the first connection structure through a first sling buckle, and the second sling is connected to the second connection structure through a second sling buckle; both the first sling buckle and the second sling buckle are made of high-strength alloy materials.

[0017] Preferably, the gravity of the pile body is G, and the preset tensile force threshold is any value within the range of 0.51G - 0.75G.

[0018] Preferably, the pile body is at least one of a steel pile, a concrete pile, and a composite material pile.

[0019] Preferably, both the first driving mechanism and the second driving mechanism are winches.

[0020] Preferably, it further includes a computer or a PLC controller deployed with the processor.

[0021] Preferably, an attitude sensor is provided on the pile body. The attitude sensor is used to measure the inclination angle of the pile body, and the attitude sensor is signal-connected to the processor.

[0022] In the third aspect, the present invention provides a method for monitoring and adjusting the safety of pile hoisting. Based on the pile hoisting safety monitoring and adjustment system as described above, it includes the following steps: S1. The first sling and the second sling are connected to the pile body; Set a preset tensile force threshold according to the weight of the pile body; S2. Hoist or lower the pile body; When hoisting the pile body: The first driving mechanism and the second driving mechanism retract the ropes synchronously; When the tension on the first sling collected by the sensor is greater than the preset tension threshold, the processor sends an instruction to the first driving mechanism to reduce the rope winding rate and / or sends an instruction to the second driving mechanism to increase the rope winding rate until the tension on the first sling is less than or equal to the preset tension threshold; When lowering the pile body: the first driving mechanism and the second driving mechanism release the rope synchronously; When the tension on the first sling collected by the sensor is greater than the preset tension threshold, the processor sends an instruction to the first driving mechanism to increase the rope releasing rate and / or sends an instruction to the second driving mechanism to reduce the rope releasing rate until the tension on the first sling is less than or equal to the preset tension threshold.

[0023] The pile hoisting safety monitoring and adjusting method of the present invention is used to guide the use of the pile hoisting safety monitoring and adjusting device as described above to hoist or lower the pile body. The processor sends corresponding control instructions according to the data collected by the sensor to achieve negative feedback adjustment of the pile hoisting structure, so that the tension on the sling can be maintained within the allowable range, reducing the risk of a single sling breaking due to exceeding the force limit, and the pile body can be righted, reducing the probability of the pile body being damaged due to uneven force; the automatic adjustment method can also reduce manual intervention and improve construction efficiency.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. For the pile hoisting safety monitoring and adjusting device of the present invention, the processor can adjust the winding and releasing rates of the first driving mechanism and / or the second driving mechanism according to the tension data collected by the sensor, so that there is a difference in the winding and releasing rates of the first driving mechanism and the second driving mechanism. Through this difference, the height difference between the connection point of the first sling and the pile body and the connection point of the second sling and the pile body can be changed, so that the gravity of the pile body is redistributed between the two slings, reducing the maximum tension on the two slings, thereby reducing the risk of a single sling breaking due to exceeding the force limit; moreover, the first sling and the second sling are arranged in parallel. By changing the height difference between the connection points of the first sling, the second sling and the pile body, the inclination of the pile body generated during hoisting can be righted, which is beneficial to avoiding safety risks caused by excessive inclination of the pile body. The pile hoisting safety monitoring and adjusting device of the present invention can automatically adjust the tension on the two slings and the inclination angle of the pile during hoisting, can reduce manual intervention, improve construction efficiency, and has the advantages of simple structure and low cost, and has high promotion value.

[0025] 2. The pile hoisting safety monitoring and adjusting system described in the present invention uses the pile hoisting safety monitoring and adjusting device as described above to hoist the pile body, which can effectively balance the force distribution on the two hoisting ropes during the pile hoisting process, reduce the risk of hoisting rope breakage and the risk of damage to the pile body due to uneven force, and can realize the automatic adjustment of the pile body attitude, reducing the inclination amplitude of the pile body during hoisting.

[0026] 3. The pile hoisting safety monitoring and adjusting method described in the present invention is used to guide the use of the pile hoisting safety monitoring and adjusting device as described above to hoist or lower the pile body. The processor sends corresponding control instructions according to the data collected by the sensors, realizes the negative feedback adjustment of the pile hoisting structure, enables the tension on the hoisting rope to be maintained within the allowable range, reduces the risk of a single hoisting rope breaking due to exceeding the force limit, and can also make the pile body return to the upright position, reducing the probability of damage to the pile body due to uneven force; the use of the automatic adjustment method can also reduce manual intervention and improve construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the pile hoisting safety monitoring and adjusting system described in the present invention.

[0028] Reference signs in the figure: 1 - First hoisting rope; 11 - First tensiometer; 2 - Second hoisting rope; 21 - Second tensiometer; 3 - First driving mechanism; 4 - Second driving mechanism; 5 - Pile body; 51 - First connection structure; 52 - Second connection structure; 53 - Sleeve; 6 - Processor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0030] Unless otherwise specified, in the description of the specific embodiments of the present invention, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the invention product / device / installation is commonly used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present invention or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present invention.

[0031] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present invention.

[0032] In addition, the expressions "first", "second", "third", etc. appearing in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0033] In addition, in the description of the embodiments of the present invention, "several", "multiple", "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be more than 9.

[0034] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, where terms such as "set", "installed", "connected", "connected to", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0035] Embodiment 1 As shown Figure 1 in the figure, this embodiment provides a safety monitoring and adjustment device for pile hoisting, which includes a first sling 1 and a second sling 2. The first sling 1 and the second sling 2 are used to jointly connect a pile body 5. The device further includes a first driving mechanism 3 connected to the first sling 1 and capable of winding and unwinding the first sling 1, and a second driving mechanism 4 connected to the second sling 2 and capable of winding and unwinding the second sling 2.

[0036] Both the first sling 1 and the second sling 2 are rope-like members with a certain flexibility, such as steel strands, etc. The first driving mechanism 3 is connected to the first sling 1 and can wind and unwind the first sling 1 to change the length of the first sling 1 extending out, thereby changing the height of the object to be hoisted connected to the first sling 1. The second driving mechanism 4 is the same for the second sling 2.

[0037] In this embodiment, the object to be hoisted is the pile body 5. Both the first driving mechanism 3 and the second driving mechanism 4 can be winches. The first sling 1 extends out from the first driving mechanism 3 and its end far from the first driving mechanism 3 is connected to the pile body 5. The second sling 2 extends out from the second driving mechanism 4 and its end far from the second driving mechanism 4 is also connected to the pile body 5. The pile body 5 can be hoisted or lowered by winding and unwinding the ropes of the first driving mechanism 3 and the second driving mechanism 4.

[0038] The safety monitoring and adjustment device for pile hoisting further includes a monitoring unit. The monitoring unit includes a sensor and a processor 6. The sensor is used to collect the tension on the first sling 1 and the second sling 2. The processor 6 is connected to the first driving mechanism 3 and the second driving mechanism 4. And the processor 6 can adjust the winding and unwinding speed of the first driving mechanism 3 for the first sling 1 according to the tension data collected by the sensor, and / or adjust the winding and unwinding speed of the second driving mechanism 4 for the second sling 2, so that the tension on the first sling 1 and the second sling 2 is less than a preset tension threshold.

[0039] The sensor is used to measure and collect the tension borne by the first sling 1 and the second sling 2. When the material and size of the sling are known, technicians can infer the stress limit of the sling. Taking the first sling 1 as an example: comparing the tension of the first sling 1 collected by the sensor with the stress limit of the first sling 1 can determine whether the first sling 1 can continue to work, so as to timely process the sling that cannot continue to work and has a high risk of fracture. It can be understood that the tension borne by the sling is approximately equal to the tension of the sling. The sensor can be a tensiometer for measuring the tension of the sling, etc.

[0040] The processor 6 is capable of receiving the tensile force data transmitted by the sensor and sending control instructions to the first driving mechanism 3 and the second driving mechanism 4 to adjust the operating states of the first driving mechanism 3 and the second driving mechanism 4. The operating states are divided into an on state and an off state. The on state is further divided into a rope-winding state and a rope-releasing state. In the rope-winding state, different rope-winding rates correspond to different rotational speeds of the driving mechanism. In the rope-releasing state, different rope-releasing rates correspond to different rotational speeds of the driving mechanism.

[0041] A threshold value can be preset in the processor 6 in advance, and the tensile force data collected by the sensor is compared with this threshold value. If the tensile force on the first sling 1 exceeds this threshold value, the processor 6 can send a control instruction to the first driving mechanism 3 to change its rope-winding and releasing rate for the first sling 1, or send a control instruction to the second driving mechanism 4 to change its rope-winding and releasing rate for the second sling 2, or send control instructions to both the first driving mechanism 3 and the second driving mechanism 4. By changing the rope-winding and releasing rates of the first driving mechanism 3 and the second driving mechanism 4, a difference in the rope-winding or rope-releasing rates of the two driving mechanisms can be created. Furthermore, the height difference between the connection points of the two slings and the pile body 5 can be changed, so that the gravity of the pile body 5 is redistributed between the two slings. Through appropriate control instructions, the tensile force on the first sling 1 can be reduced, the tensile force on the second sling 2 can be increased, and the tensile forces on the two slings can tend to be equal.

[0042] Moreover, changing the height difference between the connection points of the two slings and the pile body 5 can also change the inclination angle of the pile body 5. By making the tensile forces on the first sling 1 and the second sling 2 tend to be equal, the inclination generated during the hoisting process of the pile body 5 can be corrected, which is beneficial to maintaining the attitude stability of the pile body 5.

[0043] In summary, for the pile hoisting safety monitoring and adjustment device described in this embodiment, the processor 6 can adjust the rope-winding and releasing rates of the first driving mechanism 3 and / or the second driving mechanism 4 according to the tensile force data collected by the sensor, so that a difference in the rope-winding and releasing rates of the first driving mechanism 3 and the second driving mechanism 4 is created. Through this difference, the height difference between the connection point of the first sling 1 and the pile body 5 and the connection point of the second sling 2 and the pile body 5 can be changed, so that the gravity of the pile body 5 is redistributed between the two slings to reduce the maximum tensile forces on the two slings, thereby reducing the risk of a single sling breaking due to exceeding the force-bearing limit. Moreover, the first sling 1 and the second sling 2 are arranged in parallel. By changing the height difference between the connection points of the first sling 1, the second sling 2 and the pile body 5, the inclination generated during the hoisting process of the pile body 5 can be corrected, which is beneficial to avoiding the safety risks caused by excessive inclination of the pile body 5.

[0044] The pile-hoisting safety monitoring and adjusting device described in this embodiment can automatically adjust the tension on the two hoisting ropes and the inclination angle of the hoisted pile during the pile-hoisting process, reduce manual intervention, improve construction efficiency, and has the advantages of simple structure and low cost, and has high popularization value.

[0045] Preferably, the pile body 5 is hoisted only by the first hoisting rope 1 and the second hoisting rope 2. The gravity of the pile body 5 is transmitted to the upper hoisting seat through the first hoisting rope 1 and the second hoisting rope 2, and the sum of the tensions borne by the first hoisting rope 1 and the second hoisting rope 2 is approximately equal to the gravity of the pile body 5.

[0046] Preferably, the winding and unwinding rate includes the rope-winding rate for hoisting the pile body 5 correspondingly and the rope-unwinding rate for lowering the pile body 5 correspondingly.

[0047] In some embodiments, when the tension on the first hoisting rope 1 collected by the sensor exceeds the preset tension threshold, the processor 6 at least performs one of the following operations: A. Send an instruction to the first driving mechanism 3 to decrease the rope-winding rate or increase the rope-unwinding rate; B. Send an instruction to the second driving mechanism 4 to increase the rope-winding rate or decrease the rope-unwinding rate.

[0048] The preset tension threshold is a threshold preset in advance in the processor 6, and its magnitude can be determined according to the weight of the pile body 5; the first hoisting rope 1 can be any one of the two hoisting ropes connecting the pile body 5. When the tension on the first hoisting rope 1 is adjusted to be less than or equal to the preset tension threshold, the processor 6 can send a recovery instruction to the first driving mechanism 3 and the second driving mechanism 4 to make the two driving mechanisms return to the initial operating state, for example, the two driving mechanisms wind the ropes synchronously at the same rate, or unwind the ropes synchronously at the same rate.

[0049] When both the first driving mechanism 3 and the second driving mechanism 4 are in the rope-winding state: Send an instruction to the first driving mechanism 3 to decrease the rope-winding rate, and / or, send an instruction to the second driving mechanism 4 to increase the rope-winding rate.

[0050] When both the first driving mechanism 3 and the second driving mechanism 4 are in the rope-unwinding state: Send an instruction to the first driving mechanism 3 to increase the rope-unwinding rate, and / or, send an instruction to the second driving mechanism 4 to decrease the rope-unwinding rate.

[0051] It can be understood that the instructions to reduce the rope retraction rate and the instructions to reduce the rope payout rate both include adjusting the drive mechanism to a stopped state, that is, a state where the rope retraction rate and the rope payout rate become zero. After the tension on the first sling 1 is less than or equal to the preset tension threshold, if the tension on the second sling 2 collected by the sensor exceeds the preset tension threshold, the processor 6 can perform the following operations: sending an instruction to reduce the rope retraction rate or increase the rope payout rate to the second drive mechanism 4; and / or sending an instruction to increase the rope retraction rate or reduce the rope payout rate to the first drive mechanism 3.

[0052] In some embodiments, the sensor includes a first tensiometer 11 and a second tensiometer 21. The first tensiometer 11 is disposed on the first sling 1, and the second tensiometer 21 is disposed on the second sling 2; both the first tensiometer 11 and the second tensiometer 21 are signal-connected to the processor 6.

[0053] The tensiometer is used to measure the tension on the sling, that is, the tension borne by the sling; preferably, both the first tensiometer 11 and the second tensiometer 21 are non-contact tension measurement devices, and a tension sensor or an optical sensing technology can be used to measure the tension change of the first sling 1 or the second sling 2 in real time. Compared with the traditional direct contact tension test method, the non-contact tension measurement device can reduce human error, avoid interfering with the force state of the sling, and is beneficial to improving the measurement accuracy and reliability.

[0054] The tensiometer can be a tension sensor embedded in the sling, or a side pressure type tension sensor.

[0055] Preferably, a memory is further included. The memory can record the historical data of the first tensiometer 11 and the second tensiometer 21; it is convenient for analyzing and optimizing the operation process.

[0056] By analyzing the magnitude and duration of the lifting rate difference between the first drive mechanism 3 and the second drive mechanism 4, a lifting rate difference / time curve of the two drive mechanisms can be obtained. Among them, a lifting rate difference greater than zero indicates that the lifting rate of the first drive mechanism 3 is greater than that of the second drive mechanism 4, and vice versa, a lifting rate difference less than zero indicates that the lifting rate of the first drive mechanism 3 is less than that of the second drive mechanism 4; the area sum of the region enclosed by the above curve and the time axis is the difference in the amount of rope retracted and paid out between the first drive mechanism 3 and the second drive mechanism 4, which can reflect the height difference between the first connection structure 51 and the second connection structure 52; theoretically, the data changes of the first tensiometer 11 and the second tensiometer 21 should be synchronized with the change of the difference in the amount of rope retracted and paid out. If the processor 6 recognizes that the data changes of the first tensiometer 11 and the second tensiometer 21 are not coordinated with the change of the difference in the amount of rope retracted and paid out, the processor 6 issues a warning signal to remind the technician.

[0057] Preferably, an alarm is further included, and the alarm is connected to the monitoring unit. When the tension collected by the sensor is greater than the preset alarm threshold, the alarm emits an alarm signal.

[0058] The preset alarm threshold is the safety threshold of the sling set in advance, and this value can be determined according to the tensile limit of the sling. For example, 80% of the tensile limit strength of the sling can be taken. When the tension on the sling is greater than the preset alarm threshold, the risk of its fracture is relatively high. Acoustic and light alarms can be issued or the system can be triggered to stop the hoisting operation to promptly remind the engineering personnel of the fracture risk of the sling and prevent safety accidents caused by further operations.

[0059] Embodiment 2 As Figure 1 shown, this embodiment provides a pile-hoisting safety monitoring and adjusting system, which includes a pile body 5 and the pile-hoisting safety monitoring and adjusting device described in Embodiment 1. A first connection structure 51 and a second connection structure 52 are respectively arranged on two opposite sides of the pile body 5. The first sling 1 is connected to the first connection structure 51, and the second sling 2 is connected to the second connection structure 52. Both the second sling 2 and the first sling 1 are vertically arranged.

[0060] The pile body 5 can be a steel pile, a concrete pile, a composite material pile, etc.; the first connection structure 51 and the second connection structure 52 are arranged on two opposite sides of the pile body. Connecting the first sling 1 to the first connection structure 51 and the second sling 2 to the second connection structure 52, the pile body 5 can be vertically lifted by the first sling 1 and the second sling 2; the two slings are respectively connected to two opposite sides of the pile body 5, which is beneficial to reducing the rotation of the pile body 5 during hoisting to maintain a stable posture, thus facilitating subsequent operations and improving safety.

[0061] The first sling 1 and the second sling 2 are parallel to each other and both are vertically arranged, which can distribute the gravity of the pile body 5 more evenly. When using two slings with the same material and specifications, the two slings can reach the service limit almost simultaneously, so as to give full play to the performance of the two slings and improve the overall hoisting capacity.

[0062] For the pile-hoisting safety monitoring and adjusting system described in this embodiment, using the pile-hoisting safety monitoring and adjusting device as described above to hoist the pile body 5 can effectively balance the force distribution on the two slings during pile hoisting, reduce the risk of sling fracture and the risk of damage to the pile body 5 due to uneven force, and can realize the automatic adjustment of the posture of the pile body 5, reducing the inclination amplitude of the pile body 5 during hoisting.

[0063] Preferably, the first connection structure 51 and the second connection structure 52 are symmetric about the central axis of the pile body 5; for the pile body 5 with a circular cross-section, the central axis is the connection line of the centers of several circular cross-sections; for the pile body 5 with a rectangular cross-section, the central axis is the connection line of the intersection points of the diagonals of several rectangular cross-sections.

[0064] It can be understood that the density of the pile body 5 is approximately uniform, and the center of gravity of the pile body 5 is close to the central axis of its geometric shape, so that the first connecting structure 51 and the second connecting structure 52 are symmetrical about the central axis of the pile body 5, and the first connecting structure 51 and the second connecting structure 52 are approximately located on both sides of the center of gravity of the pile body 5, and when the first sling 1 and the second sling 2 hoist the pile body 5, the force arms of the first sling 1 and the second sling 2 relative to the center of gravity of the pile body 5 are approximately equal, and the gravity of the pile body 5 is more evenly distributed on the first sling 1 and the second sling 2.

[0065] The preset tension threshold is greater than half of the gravity of the pile body 5; preferably, assuming that the gravity of the pile body 5 is G, the preset tension threshold is any value in the range of 0.51G-0.75G, and further preferably any value in the range of 0.51G-0.60G; taking the preset tension threshold as 0.55G as an example: when the tension on the first sling 1 collected by the sensor is greater than 0.55G, the processor 6 will send a control instruction to the first drive mechanism 3 and the second drive mechanism 4 to make the tension of the first sling 1 less than or equal to 0.55G; since the first sling 1 and the second sling 2 jointly distribute the gravity of the pile body 5, only one sling may have a tension greater than the preset tension threshold in the same period of time. If it is detected that the tension on both slings is greater than the preset tension threshold, the operation must be stopped immediately to eliminate the fault.

[0066] Preferably, the pile body 5 is lifted in a vertical posture, and the first connecting structure 51 and the second connecting structure 52 are located at the same height in the vertical direction of the pile body 5. When the tension on the two slings tends to be equal, the central axis of the pile body 5 tends to be perpendicular to the horizontal plane, and the inclination angle of the pile body 5 is the smallest.

[0067] Preferably, a ring sleeve 53 is sleeved on the pile body 5 , the first connecting structure 51 and the second connecting structure 52 are arranged on the loop line of the ring sleeve 53 , and the connecting line of the first connecting structure 51 and the second connecting structure 52 passes through the center of the ring sleeve 53 .

[0068] The ring sleeve 53 is an annular structural member sleeved on the pile body 5, and can be installed on the pile body 5 before lifting begins to be used for connecting the first sling 1 and the second sling 2; the ring sleeve 53 can be set with a connecting structure for connecting the slings without destroying the structure of the pile body 5, and the ring sleeve 53 can be recycled, which can further reduce the cost of use.

[0069] Further preferably, the ring sleeve 53 is connected close to the upper end of the pile body 5 .

[0070] Further preferably, a line connecting the first connecting structure 51 and the second connecting structure 52 passes through the center of the ring sleeve 53 .

[0071] The center of the loop 53 is its geometric center. The first connecting structure 51 and the second connecting structure 52 are located on the loop line of the loop 53. The line connecting the two passes through the center of the loop 53, that is, the distances from the two to the center of the loop 53 are equal and the two are distributed on both sides of the center of the loop 53. In this way, the moment arms of the first connecting structure 51 and the second connecting structure 52 relative to the center of gravity of the pile body 5 can be approximately equal.

[0072] In some embodiments, the first sling 1 is connected to the first connecting structure 51 through the first sling buckle, and the second sling 2 is connected to the second connecting structure 52 through the second sling buckle; the first sling buckle and the second sling buckle have the advantages of being convenient for installation and removal, which is beneficial to improving the construction efficiency; both the first sling buckle and the second sling buckle are made of high-strength alloy materials, which can ensure the connection reliability under heavy load conditions.

[0073] In some embodiments, it further includes a computer or a PLC controller equipped with a processor 6.

[0074] In some embodiments, an attitude sensor is provided on the pile body 5. The attitude sensor is used to measure the inclination angle of the pile body 5, and the attitude sensor is signal-connected to the processor 6.

[0075] Setting the attitude sensor facilitates technicians to more accurately obtain the inclination angle of the pile body 5 to further ensure safety; the attitude sensor is signal-connected to the processor 6, and the processor 6 can send control instructions based on the data transmitted by the attitude sensor, so as to make a faster response to the inclination of the pile body 5 and keep the inclination angle of the pile body 5 within a small range. Especially in complex geological conditions or space-limited environments, it can provide higher-precision pile hoisting operation support.

[0076] Embodiment 3 This embodiment provides a method for monitoring and adjusting the safety of pile hoisting. Based on the pile hoisting safety monitoring and adjusting system described in Embodiment 2, it includes the following steps: S1. The first sling 1 and the second sling 2 are connected to the pile body 5; Set a preset tension threshold according to the weight of the pile body 5; S2. Lift or lower the pile body 5; When lifting the pile body 5: The first driving mechanism 3 and the second driving mechanism 4 retract the ropes synchronously; When the tension on the first sling 1 collected by the sensor is greater than the preset tension threshold, the processor 6 sends an instruction to the first driving mechanism 3 to reduce the rope retraction rate, and / or sends an instruction to the second driving mechanism 4 to increase the rope retraction rate until the tension on the first sling 1 is less than or equal to the preset tension threshold; When lowering the pile body 5: The first driving mechanism 3 and the second driving mechanism 4 pay out the ropes synchronously; When the tension on the first sling 1 collected by the sensor is greater than the preset tension threshold, the processor 6 sends an instruction to increase the rope release rate to the first driving mechanism 3 and / or sends an instruction to decrease the rope release rate to the second driving mechanism 4 until the tension on the first sling 1 is less than or equal to the preset tension threshold.

[0077] The pile hoisting safety monitoring and adjusting method described in this embodiment is used to guide the use of the pile hoisting safety monitoring and adjusting device as described above to hoist or lower the pile body 5. The processor 6 sends corresponding control instructions according to the data collected by the sensor to achieve negative feedback adjustment of the pile hoisting structure, so that the tension on the sling can be maintained within the allowable range, reducing the risk of a single sling breaking due to exceeding the force limit. It can also right the pile body 5 and reduce the probability of the pile body 5 being damaged due to uneven force; the use of an automatic adjustment method can also reduce manual intervention and improve construction efficiency.

[0078] In step S1, the pile body 5 is preferably arranged vertically, and the central axis of the pile body 5 is perpendicular to the horizontal plane; the preset tension threshold can be set based on the weight of the pile body 5 and considering the environmental complexity and the allowable value of the inclination angle of the pile body 5. The preset tension threshold is greater than half of the gravity of the pile body 5, and the smaller the inclination angle allowed, the closer it is to half of the gravity of the pile body 5.

[0079] In step S2, the first sling 1 can be any one of the two slings connecting the pile body 5. Pile hoisting includes two working conditions: hoisting and lowering: During hoisting, the first driving mechanism 3 and the second driving mechanism 4 synchronously wind the rope. When it is detected that the tension on one of the slings is greater than the preset tension threshold, the processor 6 can send an instruction to decrease the rope winding rate to the driving mechanism corresponding to the sling with the large tension, and / or send an instruction to increase the rope winding rate to the driving mechanism corresponding to the other sling; preferably, in complex environmental working conditions, to improve safety, the rope winding rates of the first driving mechanism 3 and the second driving mechanism 4 are kept within a lower range, and when the tension on one of the slings is greater than the preset tension threshold, the processor 6 sends a stop instruction to the driving mechanism corresponding to the sling with the large tension, and the other driving mechanism slowly winds the rope to adjust the tension distribution.

[0080] During lowering, the first driving mechanism 3 and the second driving mechanism 4 synchronously release the rope. When it is detected that the tension on one of the slings is greater than the preset tension threshold, the processor 6 can send an instruction to increase the rope release rate to the driving mechanism corresponding to the sling with the large tension, and / or send an instruction to decrease the rope release rate to the driving mechanism corresponding to the other sling; preferably, in complex environmental working conditions, to improve safety, the rope release rates of the first driving mechanism 3 and the second driving mechanism 4 are kept within a lower range, and when the tension on one of the slings is greater than the preset tension threshold, the processor 6 sends a stop instruction to the driving mechanism corresponding to the sling with the small tension, and the other driving mechanism slowly releases the rope to adjust the tension distribution.

[0081] After the tension of the first sling 1 is less than or equal to the preset tension threshold, the processor 6 can send a recovery instruction to the first driving mechanism 3 and the second driving mechanism 4 so that the two driving mechanisms return to the state of synchronous rope winding or synchronous rope unwinding.

[0082] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety monitoring and adjustment device for pile hoisting, characterized in that, Comprising: A first sling (1) and a second sling (2) for jointly connecting a pile body (5), the first sling (1) and the second sling (2) being parallel to each other; A first driving mechanism (3) for taking in and paying out the first sling (1); A second driving mechanism (4) for taking in and paying out the second sling (2); A monitoring unit, including a sensor and a processor (6), the sensor being used for collecting the tensile forces on the first sling (1) and the second sling (2), and the processor (6) being connected to the first driving mechanism (3) and the second driving mechanism (4); The processor (6) adjusts the taking-in and paying-out rates of the first driving mechanism (3) and / or the second driving mechanism (4) according to the tensile force data collected by the sensor.

2. The pile hanging safety monitoring and adjusting device according to claim 1, characterized in that The taking-in and paying-out rates include a rope-taking-in rate for hoisting the pile body (5) correspondingly and a rope-paying-out rate for lowering the pile body (5) correspondingly; When the tensile force on the first sling (1) collected by the sensor exceeds a preset tensile force threshold, the processor (6) at least performs one of the following operations: A. Sending an instruction to the first driving mechanism (3) to decrease the rope-taking-in rate or increase the rope-paying-out rate; B. Sending an instruction to the second driving mechanism (4) to increase the rope-taking-in rate or decrease the rope-paying-out rate.

3. The pile hoisting safety monitoring and adjusting device according to claim 1, characterized in that The sensor includes a first tensiometer (11) and a second tensiometer (21), the first tensiometer (11) being arranged on the first sling (1), and the second tensiometer (21) being arranged on the second sling (2); Both the first tensiometer (11) and the second tensiometer (21) are in signal connection with the processor (6).

4. The pile-hoisting safety monitoring and adjusting device according to claim 3, wherein: It further includes a memory, and the memory can record the historical data of the first tensiometer (11) and the second tensiometer (21); And / or, it further includes an alarm, the alarm being connected to the monitoring unit, and when the tensile force collected by the sensor is greater than a preset alarm threshold, the alarm emits an alarm signal.

5. A safety monitoring and adjustment system for pile hoisting, characterized in that, Comprising a pile body (5) and the pile-hoisting safety monitoring and adjusting device according to any one of claims 1-4; On opposite sides of the pile body (5), a first connecting structure (51) and a second connecting structure (52) are respectively arranged, the first sling (1) is connected to the first connecting structure (51), the second sling (2) is connected to the second connecting structure (52), and both the second sling (2) and the first sling (1) are vertically arranged.

6. The pile hoisting safety monitoring and adjustment system according to claim 5, wherein, It further includes a collar (53) sleeved on the pile body (5), the first connecting structure (51) and the second connecting structure (52) are arranged on the circular line of the collar (53), and the connection line of the first connecting structure (51) and the second connecting structure (52) passes through the center of the collar (53).

7. The pile hoisting safety monitoring and adjustment system according to claim 5, wherein The first sling (1) is connected to the first connecting structure (51) through a first sling buckle, and the second sling (2) is connected to the second connecting structure (52) through a second sling buckle; both the first sling buckle and the second sling buckle are made of alloy materials.

8. The pile-hoisting safety monitoring and adjusting system according to claim 5, wherein: The gravity of the pile body (5) is G, and the preset tension threshold is any value within the range of 0.51G - 0.75G; and / or, the pile body (5) is at least one of a steel pile, a concrete pile, and a composite material pile; and / or, both the first driving mechanism (3) and the second driving mechanism (4) are winches.

9. The pile hoisting safety monitoring and adjusting system according to claim 5, wherein: It further includes a computer or a PLC controller deployed with the processor (6); and / or, an attitude sensor is provided on the pile body (5), and the attitude sensor is used to measure the inclination angle of the pile body (5), and the attitude sensor is signal-connected to the processor (6).

10. A method for monitoring and adjusting the safety of pile hoisting, characterized in that, Based on the pile hoisting safety monitoring and adjusting system according to any one of claims 5 - 9, it includes the following steps: S1. The first sling (1) and the second sling (2) are connected to the pile body (5); Set a preset tension threshold according to the weight of the pile body (5); S2. Hoist or lower the pile body (5); When hoisting the pile body (5): The first driving mechanism (3) and the second driving mechanism (4) retract the ropes synchronously; When the tension on the first sling (1) collected by the sensor is greater than the preset tension threshold, the processor (6) sends an instruction to reduce the rope retracting speed to the first driving mechanism (3), and / or sends an instruction to increase the rope retracting speed to the second driving mechanism (4) until the tension of the first sling (1) is less than or equal to the preset tension threshold; When lowering the pile body (5): The first driving mechanism (3) and the second driving mechanism (4) pay out the ropes synchronously; When the tension on the first sling (1) collected by the sensor is greater than the preset tension threshold, the processor (6) sends an instruction to increase the rope paying out speed to the first driving mechanism (3), and / or sends an instruction to reduce the rope paying out speed to the second driving mechanism (4) until the tension of the first sling (1) is less than or equal to the preset tension threshold.

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