Single-blade lifting appliance stress deformation real-time monitoring device

Abstract

The utility model discloses a single-blade lifting appliance stress deformation real-time monitoring device, and belongs to the technical field of lifting appliance structure deformation monitoring. Comprising an ultrasonic probe and a sliding assembly, the sliding assembly is arranged on a cross beam balance rod of the lifting appliance; two groups of ultrasonic probes are movably arranged on the sliding assembly; the two ends of the cross beam balance rod are arranged in the middle of the first bearing hanging rod and the second bearing hanging rod respectively. The two groups of ultrasonic probes correspondingly monitor the stress deformation of the first bearing suspender and the second bearing suspender respectively; the upper parts of the first bearing suspender and the second bearing suspender are connected with the first end of a sling, and the second end of the sling is arranged on a crane hook; a hanging belt is arranged below each of the first bearing hanging rod and the second bearing hanging rod; the fan blade is placed on the suspension belt; according to the utility model, the problems of inaccurate monitoring result, low overall deformation condition response accuracy and intervention between the monitoring assembly and the lifting appliance in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of spreader structure deformation monitoring, and in particular relates to a real-time monitoring device for stress deformation of a single-blade spreader. Background Art

[0002] The above-ground part of a wind turbine generator set is mainly composed of blades, hub, main engine and tower from top to bottom; each component needs to be hoisted during the assembly process; the commonly used hoisting methods for blades include: rotor hoisting and single-blade hoisting; rotor hoisting is to assemble all the blades to the hub on the ground. After the rotor is hoisted, it is flipped in the air and docked with the nacelle; rotor hoisting requires a larger blade assembly space on the ground and the operation time is longer. Since its three blades are hoisted together with the hub, it is difficult to adjust the orientation during hoisting, and the pressure on the hoisting equipment is greater; therefore, single-blade hoisting is currently more commonly used. Single-blade hoisting can reduce the requirements for the construction site, especially in complex mountainous areas; it improves the installation efficiency of the blades and reduces the pressure on the hoisting equipment.

[0003] During the installation of a single blade, the blade to be installed must be kept horizontal to ensure it can be tightly docked onto the hub. During the installation process, the deformation of the sling under stress must be monitored to ensure that the sling is maintained in a safe and stable lifting state and that the blade can be installed in a horizontal position on the hub. Stress and deformation monitoring of the sling is usually performed using a stress monitoring sensor installed near the main stress point of the sling. Under stress, the stress monitoring sensor monitors the electrical parameters of the sling material, such as resistance, capacitance, and inductance, to indirectly infer the degree of deformation. The information collection port of the stress monitoring sensor needs to be embedded in the sling material or electrically connected to the sling material through welding to collect changes in the electrical parameters of the sling under stress and deformation. In addition, the stress monitoring sensor is installed at a single point, and its monitoring results are obtained indirectly through electrical parameters. Therefore, the monitoring result may only reflect the stress and deformation results at and near the installation point in the best case, and does not reflect the deformation state of the entire sling under stress in real time. This may lead to inaccurate monitoring results. Utility Model Content

[0004] The utility model provides a real-time monitoring device for stress and deformation of a single-blade sling, wherein an ultrasonic probe is arranged on the sling as a sling stress and deformation monitoring component. When the sling is deformed under stress, the deformation will affect the reflection state of the ultrasonic wave. The time and amplitude of the ultrasonic pulse signal reflected back from the monitored sling by the ultrasonic pulse are used as the basis for directly judging the deformation of the sling, so that the monitoring result is more accurate. In addition, the ultrasonic probe monitoring component can move back and forth relative to the sling, and its reciprocating movement path can cover the entire monitoring range of the sling, so that the deformation state of the sling as a whole under stress can be reflected in real time. With the ultrasonic pulse as the medium, a non-interference monitoring method can be achieved between the monitoring component and the sling.

[0005] In order to achieve the above technical objectives, the present invention is implemented through the following technical solutions:

[0006] A single-blade hanger stress and deformation real-time monitoring device includes: an ultrasonic probe and a sliding assembly;

[0007] The sliding assembly is arranged on the crossbeam balance bar of the sling, and two sets of ultrasonic probes are movably arranged on the sliding assembly; the ultrasonic probes slide back and forth on the sliding assembly;

[0008] The two ends of the crossbeam balance bar are respectively centrally arranged on the first supporting suspender rod and the second supporting suspender rod;

[0009] The two groups of ultrasonic probes respectively monitor the stress and deformation of the first supporting hanger and the second supporting hanger;

[0010] The first end of a sling is respectively provided at a position of the first supporting boom at the same distance from both ends, and the second ends of the two slings are both provided on the crane hook;

[0011] The first end of a sling is respectively provided at a position of the second supporting suspender rod at the same distance from both ends, and the second ends of the two slings are both provided on the crane hook;

[0012] A suspension belt is provided below each of the first supporting hanger and the second supporting hanger; the fan blades are placed on the suspension belts.

[0013] Preferably, the sliding assembly includes: a sliding rail, a sliding block and a driving assembly;

[0014] The sliding rails are provided in two groups;

[0015] A set of sliding blocks is provided on each set of the sliding rails;

[0016] A set of ultrasonic probes is provided on each set of the sliding blocks;

[0017] A driving assembly is arranged between the sliding rail and the sliding block, and is used to drive the sliding block to reciprocate on the sliding rail.

[0018] Preferably, the driving assembly comprises a driving sliding wheel, a driving shaft, a motor, a driven sliding wheel and a driven shaft.

[0019] The lower end of the driving shaft is arranged at the center of the driving sliding wheel, and the upper end of the driving shaft penetrates the upper surface of the sliding block and is connected with the rotor of the motor.

[0020] The driven sliding wheel is arranged beside the driving sliding wheel and is symmetrically arranged with the driving sliding wheel. The lower end of the driven shaft is arranged at the center of the driven sliding wheel, and the upper end of the driven shaft is rotatably arranged on the top surface of the sliding block.

[0021] Part of the driving sliding wheel and the driven sliding wheel are movably arranged in the sliding grooves respectively opened on both sides of the sliding rail, and the side surfaces of the driving sliding wheel and the driven sliding wheel are always attached to the inner side walls of the sliding grooves.

[0022] Preferably, an auxiliary pulley is arranged at the center of the inner top surface of the sliding block. The two center points of the auxiliary pulley are rotatably connected with the first end of an "L"-shaped shaft, and the second end of the "L"-shaped shaft is connected to the inner top surface of the sliding block.

[0023] Preferably, the sliding rail is arranged above the central control box, and the hollow box is arranged at the center of the balance bar of the cross beam.

[0024] The PLC, the A / D converter and the wireless remote transmission module are integrally arranged in the central control box.

[0025] The ultrasonic probe is connected to the A / D converter, and the A / D converter and the wireless remote transmission module are communicatively connected to the PLC.

[0026] Preferably, the ultrasonic probe is arranged on the sliding block through a supporting adjusting frame.

[0027] The monitoring adjusting frame is used to adjust the orientation, direction and distance between the ultrasonic probe and the first supporting rod or the second supporting rod.

[0028] Preferably, the monitoring adjusting frame comprises a vertical supporting rod, a first supporting arm and a second supporting arm.

[0029] The lower end of the vertical supporting rod is arranged on the upper surface of the sliding block, the upper end of the vertical supporting rod is arranged at the first end of the first supporting arm through a hinged rotating shaft, the second end of the first supporting arm is arranged at the first end of the second supporting arm through a hinged rotating shaft, and the second end of the second supporting arm is arranged with the ultrasonic probe.

[0030] Preferably, the second branch is arranged as an electrically controlled telescopic rod;

[0031] The tail end of the electrically controlled telescopic rod is connected with the second end of the first branch through a hinged rotating shaft;

[0032] The head end of the electrically controlled telescopic rod is arranged with an ultrasonic probe.

[0033] Preferably, each of the first supporting sling and the second supporting sling is arranged with a group of suspension belt hanging buckles near the two ends;

[0034] The two ends of the suspension belt arranged below the first supporting sling and the second supporting sling are arranged on the two groups of suspension belt hanging buckles respectively.

[0035] Preferably, each of the first supporting sling and the second supporting sling is arranged with two groups of sling hanging buckles;

[0036] The distance between the two groups of sling hanging buckles and the two ends of the supporting sling is consistent;

[0037] The first end of the sling is arranged on the sling hanging buckle.

[0038] The beneficial effects of the utility model are as follows:

[0039] The single-leaf sling stress deformation real-time monitoring device provided by the utility model sets one group of ultrasonic probes on the first supporting sling and the second supporting sling on the sling to monitor the stress deformation, directly judges the deformation of the sling based on the time and amplitude change of the received ultrasonic pulse, and the ultrasonic pulse form monitoring result is more accurate compared with the electric parameters of the monitoring target collected by the sensor; the ultrasonic probe does not need to be involved in the sling and does not need to be in direct contact with the sling, so that the stress deformation of the sling is monitored without trace and damage;

[0040] The ultrasonic probe can reciprocate under the cooperation of the sliding rail and the sliding block, the moving range of the ultrasonic probe covers the overall length of the first supporting sling and the second supporting sling, the overall stress deformation result of the first supporting sling and the second supporting sling can be collected, and the stress deformation of the supporting sling is reflected as a whole; the comprehensive monitoring result helps the operator accurately master the condition of the sling;

[0041] The ultrasonic probe is arranged on the monitoring and adjusting frame formed by the vertical supporting rod, the first branch and the second branch; the monitoring and adjusting frame can adjust the orientation and distance between the ultrasonic probe and the first supporting sling and the second supporting sling, so that the angle and orientation of the ultrasonic pulse incidence and reflection reception are optimal, which helps to improve the accuracy of the monitoring result. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 This is a structural diagram of the utility model in which the fan blades are suspended on a hanger;

[0044] Figure 2 This is a schematic diagram of the overall structure of the sling of the utility model;

[0045] Figure 3 This is a schematic diagram of the structure of the monitoring and adjusting frame of the utility model arranged on the sliding block;

[0046] Figure 4 This is a structural diagram of the utility model in which the second arm of the monitoring and adjusting frame is set as an electrically controlled telescopic rod;

[0047] Figure 5 It is a schematic diagram of the structure of the driving assembly of the sliding block of the utility model.

[0048] In the accompanying drawings, the structural names represented by the reference numerals are:

[0049] 1- single blade of fan, 2- first supporting boom, 3- second supporting boom, 4- crossbeam balance bar, 5- suspension belt, 501- suspension belt buckle, 6- sling, 601- sling buckle, 7- crane hook, 8- central control box, 9- sliding rail, 10- sliding block, 1001- driving shaft, 1002- driving sliding wheel, 1003- driven shaft, 1004- driven sliding wheel, 1005- auxiliary pulley, 11- ultrasonic probe, 1101- vertical support rod, 1102- first support arm, 1103- second support arm, 1104- electric control telescopic rod, 12- motor. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] Example 1

[0052] A single-blade hanger stress and deformation real-time monitoring device includes: an ultrasonic probe 11 and a sliding assembly;

[0053] like Figure 1 As shown, the crossbeam balance bar 4 of the spreader is composed of two steel pipes of equal length and arranged in parallel, and a steel rod is welded between the two steel pipes to connect the steel rods and the steel pipes to form the crossbeam balance bar 4 as a whole;

[0054] The first end of the crossbeam balance bar 4 is welded in the center to the first supporting hanger 2; the second end of the crossbeam balance bar 4 is welded in the center to the second supporting hanger 3; the crossbeam balance bar 4, the first supporting hanger 2 and the second supporting hanger 3 together form an "I"-shaped sling, in which the first supporting hanger 2 and the second supporting hanger 3 on both sides serve as the main force-bearing structure of the suspension, and the crossbeam balance bar 4 maintains the stability of the overall structure of the sling; when the sling is suspending heavy objects, the stress and deformation of the first supporting hanger 2 and the second supporting hanger 3 are the focus;

[0055] like Figure 2 As shown, a set of sling hooks 601 are provided at positions equidistant from both ends of the first supporting boom 2; a set of sling hooks 601 are also provided at positions equidistant from both ends of the second supporting boom 3; each set of sling hooks 601 is connected to the first end of a sling 6, and the second ends of the four slings 6 are all hooked on the crane hook 7;

[0056] A set of suspension belts 5 is provided below the first supporting boom 2 and the second supporting boom 3; Figure 2 As shown, a set of suspension belt buckles 501 is provided near both ends of the first supporting hanger 2, and the distance between the two sets of suspension belt buckles 501 and the two ends of the first supporting hanger 2 is consistent; a set of suspension belt buckles 501 is also provided near both ends of the second supporting hanger 3, and the distance between the two sets of suspension belt buckles 501 and the two ends of the second supporting hanger 3 is consistent;

[0057] The two ends of the suspension belt 5 are respectively connected to the suspension belt buckles 501 at the two ends of the corresponding supporting booms; Figure 1 As shown, a single fan blade 1 is placed on two sets of suspension belts 5; a crane hook 7 suspends the entire sling to achieve the lifting and suspension of the single fan blade 1;

[0058] As a preferred embodiment, both ends of the two sets of suspension straps 5 maintain a detachable connection buckle with the suspension strap buckle 501; the detachable connection buckle method can adopt a lifting hook with a safety lock; the lifting hook with a safety lock here is an existing product and no detailed structural description is given; the purpose of the detachable connection between the suspension strap 5 and the suspension strap buckle 501 is to facilitate the placement of the single fan blade 1 on the suspension strap 5; during operation, it is only necessary to pass the two sets of suspension straps 5 from under the single fan blade 1, and then buckle the two ends of the suspension strap 5 on the corresponding suspension strap buckle 501 respectively; assuming that the suspension strap 5 and the suspension strap buckle 501 maintain a fixed connection structure, when placing the single fan blade 1, the single fan blade 1 needs to be passed through the two sets of suspension straps 5 in turn. The entire operation requires a larger site area, and the single fan blade 1 needs to be kept from swinging greatly before it can pass smoothly. The process is time-consuming and labor-intensive.

[0059] The first supporting boom 2 and the second supporting boom 3 are the main load-bearing structures and are also the key monitoring targets for stress and deformation. Both groups of supporting booms need to be equipped with stress and deformation monitoring components. In addition, to distinguish between fixed single-point monitoring and real-time mobile monitoring, this embodiment adopts real-time mobile monitoring, which can comprehensively reflect the stress and deformation conditions of the first supporting boom 2 and the second supporting boom 3.

[0060] A sliding assembly is provided on the crossbeam balance bar 4, and two groups of ultrasonic probes 11 are provided on the sliding assembly so as to slide back and forth. The two groups of ultrasonic probes 11 are responsible for monitoring the stress and deformation of the first supporting hanger 2 and the second supporting hanger 3 respectively. The ultrasonic probe 11 monitoring is a non-destructive monitoring method, which does not require intervention in the sling. The stress and deformation of the sling are monitored by using the characteristics of ultrasonic wave propagation in the sling material. Continuous pulse waves are sent to the sling through the ultrasonic probe 11. The pulse waves will be absorbed, scattered and reflected by the sling material. When the sling material has different degrees of stress and deformation, its absorption, scattering and reflection of the ultrasonic pulse are different. The stress and deformation state of the sling can be directly reflected by the time and amplitude of the reflected ultrasonic pulse signal.

[0061] like Figure 2 As shown, the above-mentioned sliding assembly includes: a sliding rail 9, a sliding block 10 and a driving assembly;

[0062] Two sets of sliding rails 9 are arranged in parallel, and the two sets of sliding rails 9 are centrally arranged on the crossbeam balance bar 4; each set of sliding rails 9 is provided with a set of sliding blocks 10; each set of sliding blocks 10 is provided with a set of ultrasonic probes 11;

[0063] A driving assembly is arranged between the sliding rail 9 and the sliding block 10, and is used to drive the sliding block 10 to move back and forth on the sliding rail 9; the sliding block 10 moves back and forth, thereby driving the ultrasonic probe 11 to move back and forth, so as to realize the stress deformation monitoring of the first supporting boom 2 and the second supporting boom 3 as a whole;

[0064] The lengths of the two groups of sliding rails 9 are consistent, and the lengths of the two groups of sliding rails 9 are greater than the lengths of the first supporting boom 2 and the second supporting boom 3; in this way, the sliding range of the ultrasonic probe on the sliding rail 9 can cover the first supporting boom 2 and the second supporting boom 3;

[0065] As shown in Figure 5 The driving assembly comprises a driving sliding wheel 1002, a driving shaft 1003, a motor 12, a driven sliding wheel 1004 and a driven shaft 1003;

[0066] The sliding block 10 is hollow, and the driving sliding wheel 1002 and the driven sliding wheel 1004 are arranged in the sliding block 10; the lower end of the driving shaft 1001 is fixedly connected to the center of the driving sliding wheel 1002, and the upper end of the driving shaft 1001 penetrates through the upper surface of the sliding block 10 and is connected to the rotor of the motor 12; a bearing is arranged between the driving shaft 1001 and the sliding block 10, so that the driving shaft 1001 can rotate freely relative to the sliding block 10;

[0067] The driven sliding wheel 1004 is arranged beside the driving sliding wheel 1002 and is mirror-symmetrically arranged with the driving sliding wheel 1002; the lower end of the driven shaft 1003 is fixedly connected to the center of the driven sliding wheel 1004, and the upper end of the driven shaft 1003 is rotatably arranged on the inner top surface of the sliding block 10 through a bearing;

[0068] Part of the driving sliding wheel 1002 and part of the driven sliding wheel 1004 are movably arranged in the symmetrically opened sliding grooves on both sides of the sliding rail 9; and the side surfaces of the driving sliding wheel 1002 and the driven sliding wheel 1004 always adhere to the inner side walls of the sliding grooves; the sliding grooves opened on both sides of the sliding rail 9 provide a running track groove for the driving sliding wheel 1002 and the driven sliding wheel 1004; the motor 12 drives the driving sliding wheel 1002 to rotate, and the driven sliding wheel 1004 passively follows, so as to achieve the purpose of moving the sliding block 10 on the sliding rail 9, and the ultrasonic probe 11 arranged on the sliding block 10 moves back and forth, thereby realizing the stress deformation monitoring of the first supporting boom 2 and the second supporting boom 3;

[0069] The motor power supply assembly is directly arranged on the cross beam balance rod 4 of the lifting appliance, the motor 12 is controlled by a travel switch, the travel switch controls the rotating speed and the running interval time of the motor 12, and the speed of the control ultrasonic probe 11 sliding movement and the interval time of each sliding, that is, the interval time between reciprocating sliding.

[0070] As a preferred embodiment, in order to avoid the upper top surface of the sliding block 10 directly contacting the upper surface of the sliding rail 9, increasing the sliding friction therebetween, affecting the smooth sliding; also in order to make the sliding block 10 can be placed more stably on the sliding rail 9; as shown in Figure 5 The inner top surface of the sliding block 10 is centrally provided with an auxiliary pulley 1005, the circumferential surface of the auxiliary pulley 1005 is always attached to the upper surface of the sliding rail 9; the two side centers of the auxiliary pulley 1005 are rotationally connected with the first end of the “L” type shaft rod, the second end of the “L” type shaft rod is connected to the inner top surface of the sliding block 10, and the installation of the auxiliary pulley 1005 is realized through the “L” type shaft rod.

[0071] Embodiment 2

[0072] The return pulse signal collected by the ultrasonic probe 11 needs to be converted into a digital signal by an A / D converter; the converted digital signal is provided to a PLC processor for processing and analysis, and finally the stress deformation result of the monitoring target is determined; therefore, in embodiment 1, the ultrasonic probe 11 needs to be connected to the A / D converter and the central control module such as PLC on the ground through the data transmission line; in this way, the operator on the ground can monitor the stress deformation of the lifting appliance in real time; after the lifting appliance is lifted, the data transmission line is laid from the high altitude to the ground, which may interfere with the normal operation of the lifting appliance, and the data transmission line may also be damaged due to the interference of the structure, resulting in the interruption of data transmission.

[0073] As Figure 2As shown, in this embodiment, a central control box 8 is directly set on the sling, and the sliding rail 9 is directly set above the central control box 8; the entire central control box 8 is fixedly arranged in the center on the beam balance bar 4; a PLC, an A / D converter and a wireless transmission module are integrated in the central control box 8; an ultrasonic probe 11 is connected to the A / D converter; the A / D converter and the wireless remote transmission module are communicatively connected to the PLC; the above-mentioned wireless remote transmission module adopts a LAN wireless transmission module or a Bluetooth wireless transmission module; the specific model can be selected by technical personnel in this field according to actual application conditions; the reflected pulse signal received by the ultrasonic probe 11 is fed into the A / D converter for analog-to-digital conversion, and the output digital signal is fed into the PLC processor, and the PLC analyzes and processes the fed signal and outputs a real-time sling stress and deformation result; the output sling stress and deformation result is transmitted to the operator terminal via the wireless remote transmission module, so that the operator can synchronously know the sling stress and deformation monitoring result; there is no need to use wired transmission, avoiding the laying of data transmission lines from the sling to the ground.

[0074] Example 3

[0075] Based on Example 1, in Example 1, the two sets of ultrasonic probes 11 are arranged on the sliding block 10, so the distance between the two sets of ultrasonic probes 11 and the first supporting boom 2 and the second supporting boom 3 is fixed. When affected by factors such as weather and changes in high-altitude air pressure, if the ultrasonic probes 11 are too far away from the monitored object, the received return ultrasonic pulse signal may be lost. Or if the relative orientation between the ultrasonic probes 11 and the monitored object deviates, the incidence and reflection reception of the ultrasonic pulse may also be affected.

[0076] like Figure 3 As shown, in this embodiment, the ultrasonic probe 11 is set on the sliding block 10 through a support adjustment frame; the monitoring adjustment frame is used to adjust the orientation and distance between the ultrasonic probe 11 and the first supporting rod 2 or the second supporting rod 3.

[0077] The above-mentioned monitoring and adjustment frame includes: a vertical support rod 1101, a first support arm 1102 and a second support arm 1103;

[0078] The lower end of the vertical support rod 1101 is arranged on the upper surface of the sliding block 10, and the upper end of the vertical support rod 1101 is arranged with the first end of the first supporting arm 1102 through a hinged rotating shaft; the second end of the first supporting arm 1102 is arranged with the first end of the second supporting arm 1103 through a hinged rotating shaft, and the second end of the second supporting arm 1103 is arranged with the ultrasonic probe 11; the hinged rotating shaft is a damping hinged rotating shaft or is arranged with a locking screw; by tightening the locking screw, the relative positions among the vertical support rod 1101, the first supporting arm 1102 and the second supporting arm 1103 can be kept fixed; on the contrary, by loosening the locking screw, the angles among the vertical support rod 1101, the first supporting arm 1102 and the second supporting arm 1103 can be adjusted.

[0079] By arranging the monitoring and adjusting frame, the relative adjustable position relationship among the ultrasonic probe 11, the first supporting arm 1102 and the second supporting arm 1103 is formed; the distance and the relative position between the ultrasonic probe 11 and the first supporting arm 1102 and the second supporting arm 1103 are adjusted to be optimal; and the accuracy of ultrasonic pulse incidence and reflection receiving is ensured.

[0080] Embodiment 4

[0081] Based on the basis of Embodiment 3, the second supporting arm 1103 in Embodiment 3 is replaced by an electrically controlled telescopic rod 1104; the electrically controlled telescopic rod 1104 can make the ultrasonic probe 11 infinitely close to the first supporting arm 1102 and the second supporting arm 1103; the ultrasonic pulse reflection path is shortened as much as possible, the signal receiving efficiency is improved, the decay or information loss of the reflected ultrasonic pulse is reduced, and the stress deformation of the monitored lifting appliance is restored to the greatest extent.

[0082] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the specification. The embodiments are selected and described in the specification in order to better explain the principles and practical applications of the application, so that the technicians in the technical field can well understand and utilize the application. The application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A real-time monitoring device for stress and deformation of a single blade spreader, characterized in that: include: Ultrasound probe and slide assembly; The sliding assembly is arranged on the crossbeam balance bar of the spreader, and two sets of ultrasonic probes are movably arranged on the sliding assembly; the ultrasonic probes slide back and forth on the sliding assembly; the crossbeam balance bar, the first supporting boom and the second supporting boom together form an "I"-shaped spreader, wherein the first supporting boom and the second supporting boom on both sides serve as the main suspension force-bearing structure, and the crossbeam balance bar maintains the stability of the overall structure of the spreader; The two ends of the crossbeam balance bar are respectively centrally arranged on the first supporting suspender rod and the second supporting suspender rod; The two groups of ultrasonic probes respectively monitor the stress and deformation of the first supporting hanger and the second supporting hanger; The first end of a sling is respectively provided at a position of the first supporting boom at the same distance from both ends, and the second ends of the two slings are both provided on the crane hook; The first end of a sling is respectively provided at a position of the second supporting suspender rod at the same distance from both ends, and the second ends of the two slings are both provided on the crane hook; A suspension belt is provided below each of the first supporting hanger and the second supporting hanger; the fan blades are placed on the suspension belts.

2. A single blade hanger stress and deformation real-time monitoring device according to claim 1, characterized in that: The sliding assembly includes: a sliding rail, a sliding block and a driving assembly; The sliding rails are provided in two groups; A set of sliding blocks is provided on each set of the sliding rails; A set of ultrasonic probes is provided on each set of the sliding blocks; A driving assembly is provided between the sliding rail and the sliding block, and the driving assembly is used to drive the sliding block to move back and forth on the sliding rail.

3. A single blade hanger stress and deformation real-time monitoring device according to claim 2, characterized in that: The driving assembly includes: an active sliding wheel, an active shaft, a motor, a driven sliding wheel and a driven shaft; The lower end of the active shaft is arranged at the center of the active sliding wheel, and the upper end of the active shaft passes through the upper surface of the sliding block and is connected to the rotor of the motor; The driven sliding wheel is located beside the active sliding wheel and is arranged in a mirror-symmetrical manner with the active sliding wheel; the lower end of the driven shaft is arranged at the center of the driven sliding wheel, and the upper end of the driven shaft is rotatably arranged on the top surface of the sliding block; Parts of the active sliding wheel and the driven sliding wheel are respectively movably arranged in the sliding grooves opened on both sides of the sliding rail; and the side surfaces of the active sliding wheel and the driven sliding wheel are always in contact with the inner side walls of the sliding grooves.

4. A single blade hanger stress and deformation real-time monitoring device according to claim 3, characterized in that: An auxiliary pulley is centrally arranged on the inner top surface of the sliding block; The centers of the two sides of the auxiliary pulley are rotatably connected to the first end of the "L"-shaped shaft, and the second end of the "L"-shaped shaft is connected to the inner top surface of the sliding block.

5. The device for real-time monitoring stress and deformation of a single blade hanger according to claim 2, characterized in that: The sliding rail is arranged above the central control box; the central control box is centrally arranged on the crossbeam balance bar; The central control box is integrated with a PLC, an A / D converter, and a wireless remote transmission module; The ultrasonic probe is connected to an A / D converter; the A / D converter and the wireless remote transmission module are communicatively connected to a PLC.

6. A single blade hanger stress and deformation real-time monitoring device according to claim 2, characterized in that: The ultrasonic probe is arranged on the sliding block via a monitoring and adjusting frame; The monitoring adjustment frame is used to adjust the orientation and distance between the ultrasonic probe and the first supporting rod or the second supporting rod.

7. A single blade hanger stress and deformation real-time monitoring device according to claim 6, characterized in that: The monitoring and adjustment frame includes: a vertical support rod, a first support arm and a second support arm; The lower end of the vertical support rod is arranged on the upper surface of the sliding block, and the upper end of the vertical support rod is provided with the first end of the first support arm through a hinged shaft; the second end of the first support arm is provided with the first end of the second support arm through a hinged shaft, and the second end of the second support arm is provided with an ultrasonic probe.

8. A single blade hanger stress and deformation real-time monitoring device according to claim 7, characterized in that: The second arm is configured as an electrically controlled telescopic rod; The tail end of the electrically controlled telescopic rod is connected to the second end of the first arm via a hinged shaft; An ultrasonic probe is arranged at the head end of the electrically controlled telescopic rod.

9. The device for real-time monitoring stress and deformation of a single blade hanger according to claim 1, characterized in that: A set of suspension belt buckles are respectively provided near the two ends of the first supporting suspender rod and the second supporting suspender rod; The two ends of the suspension belt arranged below the first supporting hanger and the second supporting hanger are respectively arranged on two groups of suspension belt buckles.

10. The device for real-time monitoring stress and deformation of a single blade hanger according to claim 1, characterized in that: Two sets of sling hooks are provided on the first supporting boom and the second supporting boom; The distances between the two sets of sling hooks and the two ends of the supporting sling are consistent; The first end of the sling is arranged on the sling hook.

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