Air-core reactor winding displacement telescopic device and system thereof

Abstract

The invention provides an air-core reactor winding flat cable telescopic device and a system thereof, and relates to the field of reactors, the air-core reactor winding flat cable telescopic device comprises an outer layer telescopic arm, the lower end of the outer layer telescopic arm is fixedly provided with a supporting seat, and the supporting seat is arranged on an equipment base through a position adjusting device; the middle telescopic arm is sleeved with the outer telescopic arm in a sliding mode, and the middle telescopic arm is driven by a first lifting device to slide in the outer telescopic arm in the axial direction of the outer telescopic arm; the inner-layer telescopic arm is sleeved with the middle telescopic arm in a sliding mode, and the inner-layer telescopic arm is driven by a second lifting device to slide on the middle telescopic arm in the axial direction of the middle telescopic arm; the control device is electrically connected with the first lifting device, the second lifting device and the position adjusting device. And the rectangular square pipes of different specifications are matched to complete multi-range stretching and retracting, and winding of products of various diameters can be compatible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric reactors, in particular to a hollow reactor winding line stretching device and system thereof. BACKGROUND

[0002] In the production of hollow reactor winding, the precise control of winding line plays a key role in product quality. With the increasing performance requirements of the power industry for hollow reactors, the winding process needs to achieve more precise line operation, which poses a severe challenge to the performance of the winding line device.

[0003] At present, the conventional winding line device is of fixed length, which is difficult to adjust the stretching stroke flexibly in the actual application when facing the complex spatial layout and fine line demand of hollow reactor winding. SUMMARY

[0004] The present application provides a hollow reactor winding line stretching device and system to solve the technical problems raised in the background art.

[0005] To solve the above technical problems, the present application discloses a hollow reactor winding line stretching device, comprising: An outer telescopic arm, the lower end of the outer telescopic arm is fixedly provided with a support seat, and the support seat is arranged on the equipment base through a position adjusting device; An intermediate telescopic arm, the intermediate telescopic arm is slidingly sleeved in the outer telescopic arm, and the intermediate telescopic arm is driven by a lifting device one to slide axially in the outer telescopic arm along the outer telescopic arm; An inner telescopic arm, the inner telescopic arm is slidingly sleeved in the intermediate telescopic arm, and the inner telescopic arm is driven by a lifting device two to slide axially in the intermediate telescopic arm along the intermediate telescopic arm; A control device, the control device is electrically connected with the lifting device one, the lifting device two and the position adjusting device.

[0006] Preferably, anti-locking design structures are added between the outer telescopic arm and the intermediate telescopic arm and between the intermediate telescopic arm and the inner telescopic arm, and the telescopic arm is a rectangular square tube.

[0007] Preferably, the anti-locking design structure comprises a ball guide structure.

[0008] Preferably, the position adjusting device is any one of a horizontal rotating device, a one-dimensional translation device and a two-dimensional translation device.

[0009] Preferably, the lifting device one and the lifting device two are any one of a lead screw lifting assembly and a pneumatic lifting assembly.

[0010] Preferably, it further comprises: A monitoring module, the monitoring module comprises: Strain detection unit: strain sensor is pasted on the key strain area of the surface of the telescopic arm; Temperature sensor: for detecting the temperature of the key strain area of the surface of the telescopic arm; Displacement sensor: displacement sensors are arranged on the intermediate telescopic arm and the inner telescopic arm, and the displacement sensor is used for detecting the displacement of the corresponding telescopic arm; Speed sensor: speed sensors are arranged on the intermediate telescopic arm and the inner telescopic arm, and the speed sensor is used for detecting the telescopic speed of the corresponding telescopic arm; Inclination sensor: for detecting the inclination of the telescopic arm; Six-dimensional force sensor: installed on the telescopic arm in contact with the wire, for sensing the contact force, torque in the winding process, and outputting a six-dimensional force vector ; , , respectively , , directional contact force; , , respectively , , directional contact torque; Strain correction module: for determining the equivalent strain of each key strain area based on the temperature sensor detection value and in combination with the strain gradient of the key strain area of the surface of the telescopic arm; Alarm module: for alarming when the equivalent strain of any key strain area is not within the corresponding strain allowable range.

[0011] Preferably, further comprising: State determination module: in combination with the monitoring module, the state parameters of the telescopic arm are determined; Display module: for displaying the state parameters of the telescopic arm; The state determination module comprises: Data preprocessing unit: the original data output by the monitoring module is cleaned and time-aligned; Outer telescopic arm state calculation unit: the average value of the strain of each surface key strain area of the outer telescopic arm and the gradient of the strain of the surface key strain area of the outer telescopic arm are obtained to obtain a bending state coefficient, and in combination with the bending state coefficient and the inclination sensor detection data of the outer telescopic arm, the equivalent support length of the outer telescopic arm is obtained; Intermediate telescopic arm state calculation unit: in combination with the equivalent support length of the outer telescopic arm and the speed sensor detection data of the intermediate telescopic arm, the equivalent displacement of the intermediate telescopic arm is determined; The inner telescopic arm state calculation unit calculates the equivalent displacement of the inner telescopic arm based on the equivalent displacement of the intermediate telescopic arm and the six-dimensional force vector of the inner telescopic arm.

[0012] Preferably, the equivalent strain of the critical strain region is calculated based on the following formula: ; The equivalent strain of the current critical strain region; is the average detection value of the strain sensor of the current critical strain region; is the maximum detection value of the strain sensor of the current critical strain region; is the minimum detection value of the strain sensor of the current critical strain region; is the correction coefficient of the strain gradient to the equivalent strain; is the linear expansion coefficient of the current critical strain region; is the correction coefficient of the temperature expansion state of the strain region to the equivalent strain; is the detection value of the temperature sensor of the current critical strain region; is the reference temperature.

[0013] Preferably, the outer telescopic arm state calculation unit is calculated based on the following formula: The outer telescopic arm state calculation unit is calculated based on the following formula: ; Wherein, L is the equivalent support length of the outer telescopic arm; is the arithmetic mean of the average value of the strain of each surface critical strain region of the outer telescopic arm; is the gradient of the strain of the surface critical strain region of the outer telescopic arm; is the average strain correction coefficient; is the strain gradient correction coefficient; is the original length of the outer telescopic arm; is the detection data of the inclination sensor of the outer telescopic arm; is the detection value of the strain sensor of the uppermost critical stress region of the outer telescopic arm; is the detection value of the strain sensor of the lowermost critical stress region of the outer telescopic arm; r is the up-down distance between the center of the uppermost critical stress region of the outer telescopic arm and the center of the lowermost critical stress region of the outer telescopic arm; The intermediate telescopic arm state calculation unit is calculated based on the following formula: ; Wherein, D is the equivalent displacement of the intermediate telescopic arm (2); d is the detection value of the displacement sensor of the intermediate telescopic arm (2); is the detection value of the speed sensor of the intermediate telescopic arm (2); The strain sensor detection value of the key stress area at the top of the middle telescopic arm; is the strain sensor detection value of the key stress area at the bottom of the middle telescopic arm; R is the vertical distance between the center of the key stress area at the top of the middle telescopic arm and the center of the key stress area at the bottom of the middle telescopic arm; is the correction coefficient of gradient to displacement; is the unit time; is the compensation coefficient.

[0014] The present invention also discloses a hollow reactor winding and arranging wire system, comprising the hollow reactor winding and arranging wire expansion and contraction device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a three-level telescopic arm nested structure with outer, middle and inner layers, and is equipped with an anti-jamming ball guide design to improve the smoothness of telescopic movement; the position adjustment device supports multi-dimensional adjustment to adapt to different winding direction requirements; the lifting drive can choose a screw or pneumatic component, and the control device cooperates to achieve precise drive; and a limit protection is set to avoid structural damage. By using rectangular square tubes of different specifications, multi-range telescopic movement is completed, which is compatible with the winding of products of various diameters, effectively optimizing the smoothness, adaptability, accuracy and product compatibility of the winding and wiring operation, reducing the risk of failure, and meeting the diverse needs of reactor winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] In the figure: 1. Outer telescopic arm; 2. Middle telescopic arm; 3. Inner telescopic arm; 4. Support base. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] The present invention provides a hollow reactor winding and wiring expansion device, such as Figure 1 As shown, including: An outer telescopic arm 1, a support base 4 is fixedly provided at the lower end of the outer telescopic arm 1, and the support base 4 is arranged on the equipment base through a position adjustment device; The middle telescopic arm 2 is slidably sleeved inside the outer telescopic arm 1, and the middle telescopic arm 2 is driven by the lifting device 1 to slide axially along the outer telescopic arm 1 inside the outer telescopic arm 1; The inner telescopic arm 3 is slidably connected to the inside of the middle telescopic arm 2. The inner telescopic arm 3 is driven by the second lifting device to slide axially along the middle telescopic arm 2. A control device is electrically connected to the lifting device 1, the lifting device 2, and the position adjustment device.

[0021] Among them, an anti-stuck design structure is added between the outer telescopic arm 1 and the middle telescopic arm 2, and between the middle telescopic arm 2 and the inner telescopic arm 3.

[0022] Among them, the anti-stuck design structure includes a ball guide structure to prevent jamming problems caused by friction.

[0023] Among them, the position adjustment device is any one of a horizontal rotation device, a one-dimensional translation device, and a two-dimensional translation device; to adapt to the winding requirements in different directions.

[0024] Wherein, the lifting device 1 and the lifting device 2 are any one of a screw lifting assembly and a pneumatic lifting assembly.

[0025] The present invention may also be provided with a limit switch or sensor to prevent structural damage caused by excessive stretching or compression.

[0026] By using three different specifications of rectangular square tubes, the telescopic arm of the present invention can be extended from 1.5 meters to 3 meters. The telescopic arm can be wound with products of various diameters. The outer telescopic arm 1 can be a 60*60*4 rectangular square tube of 1.5 meters, the middle telescopic arm 2 can be a 50*50*4 rectangular square tube of 1.2 meters, and the inner telescopic arm 3 can be a 40*40*4 rectangular square tube of 0.8 meters. The telescopic cooperation can achieve the change of length. The beneficial effects of the above technical solution are: The application adopts a three-level telescopic arm nested structure of an outer layer, an intermediate layer and an inner layer, and is matched with a design of anti-stuck ball guide to improve telescopic smoothness; a position adjusting device supports multi-dimensional adjustment to adapt to different winding direction requirements; a lifting drive can be selected as a screw or a pneumatic component, and a control device cooperatively realizes precise driving; and a limit protection is arranged to avoid structure damage, different specifications of rectangular tubes are matched to complete telescoping in multiple ranges, and multiple diameter products can be wound, which effectively optimizes the smoothness, adaptability, precision and product compatibility of winding operation, reduces fault risk, and meets diversified needs of reactor winding.

[0027] In embodiment 2, on the basis of embodiment 1, the hollow reactor winding line telescoping device further comprises: A monitoring module, the monitoring module comprises: A strain detection unit: a strain sensor is attached to a key strain area on the surface of the telescopic arm; A temperature sensor: for detecting the temperature of the key strain area on the surface of the telescopic arm; A displacement sensor: a displacement sensor is arranged on the intermediate telescopic arm 2 and the inner telescopic arm 3, and the displacement sensor is used to detect the displacement of the corresponding telescopic arm; A speed sensor: a speed sensor is arranged on the intermediate telescopic arm 2 and the inner telescopic arm 3, and the speed sensor is used to detect the telescopic speed of the corresponding telescopic arm; An inclination sensor: for detecting the inclination (the included angle between the actual telescopic direction and the ideal telescopic direction) of the telescopic arm; A six-dimensional force sensor: installed on the telescopic arm in contact with the winding, used to sense the contact force and torque in the winding process, and output a six-dimensional force vector ; 、 、 respectively 、 、 direction contact force; 、 、 respectively 、 、 direction contact torque; A strain correction module: for determining the equivalent strain of each key strain area based on the temperature sensor detection value and the strain gradient of the key strain area on the surface of the telescopic arm; An alarm module: for alarming when the equivalent strain of any key strain area is not within the corresponding strain allowable range.

[0028] The equivalent strain of the key strain area is calculated based on the following formula: ; average detection value of strain sensors of the current key strain region; average detection value of strain sensors of the current key strain region; maximum detection value of strain sensors of the current key strain region; minimum detection value of strain sensors of the current key strain region; correction coefficient of strain gradient to equivalent strain; linear expansion coefficient of the current key strain region; correction coefficient of temperature expansion state of the strain region to equivalent strain (experimental calibration (combined with materials and use environment)); temperature sensor detection value of the current key strain region; reference temperature (generally 20℃); 、 Through tensile / thermal simulation experiments, the errors of strain detection values before and after correction are compared with actual physical strains under the working conditions of known strain gradient and temperature change, and the correction coefficient is obtained through reverse fitting.

[0029] The beneficial effects of the above scheme are: Through strain, temperature, displacement, speed, inclination, six-dimensional force sensors, comprehensive collection of telescopic arm mechanics, motion, environmental data, covering key parameters such as force, deformation, attitude, temperature in the winding process, providing data support for precise control and health monitoring.

[0030] The strain correction module combines temperature and strain gradient to eliminate the influence of environmental temperature and uneven strain distribution on detection, improve strain detection accuracy, and ensure accurate judgment of the health status of the telescopic arm structure.

[0031] The alarm module sets a threshold based on the corrected equivalent strain, monitors the structure safety in real time, prevents telescopic arm damage caused by over-strain, reduces equipment failure risk, and improves device reliability and life.

[0032] Embodiment 3, based on embodiment 2, further comprises: State determination module: combined with the monitoring module to determine the state parameters of the telescopic arm; Display module: for displaying the state parameters of the telescopic arm; The state determination module comprises: Data preprocessing unit: cleaning and time alignment of the original data output by the monitoring module; Outer telescopic arm 1 state calculation unit: obtains the average value of the strain of each surface key strain region of the outer telescopic arm 1 and the gradient of the strain of the surface key strain region of the outer telescopic arm 1 to obtain the bending state coefficient, and obtains the equivalent support length of the outer telescopic arm 1 combined with the bending state coefficient and the inclination sensor detection data of the outer telescopic arm 1. Intermediate telescopic arm 2 state calculation unit: determine the equivalent displacement of intermediate telescopic arm 2 in combination with the equivalent support length of outer telescopic arm 1 and the speed sensor detection data of intermediate telescopic arm 2; Inner telescopic arm 3 state calculation unit: determine the equivalent displacement of inner telescopic arm 3 in combination with the equivalent displacement of intermediate telescopic arm 2 and the six-dimensional force vector of inner telescopic arm 3.

[0033] The outer telescopic arm 1 state solving unit calculates based on the following formula: ; Wherein, L is the equivalent support length of outer telescopic arm 1; is the arithmetic mean of the average value of the strain of each surface key strain region of outer telescopic arm 1; is the gradient of the strain of the surface key strain region of outer telescopic arm; is the average strain correction coefficient (experimental calibration (determined according to the material and structure of outer arm)); is the strain gradient correction coefficient (experimental calibration (in combination with strain distribution characteristics)); is the original length of outer telescopic arm 1; is the tilt sensor detection data of outer telescopic arm 1; is the strain sensor detection value of the uppermost key stress region of outer telescopic arm 1; is the strain sensor detection value of the lowermost key stress region of outer telescopic arm 1; r is the up-down direction distance between the center of the uppermost key stress region of outer telescopic arm 1 and the center of the lowermost key stress region of outer telescopic arm 1; The intermediate telescopic arm 2 state solving unit calculates based on the following formula: ; Wherein, D is the equivalent displacement of intermediate telescopic arm 2; d is the displacement sensor detection value of intermediate telescopic arm 2; is the speed sensor detection value of intermediate telescopic arm 2; is the strain sensor detection value of the uppermost key stress region of intermediate telescopic arm 2; is the strain sensor detection value of the lowermost key stress region of intermediate telescopic arm 2; R is the up-down direction distance between the center of the uppermost key stress region of intermediate telescopic arm 2 and the center of the lowermost key stress region of intermediate telescopic arm 2; is the correction coefficient of gradient to displacement (experimental calibration (in combination with intermediate arm movement-deformation characteristics); the value is greater than 0 and less than 0.5); is the unit time; A compensation coefficient (is a compensation coefficient of the intermediate telescopic arm displacement sensor detection value d, mainly used for correcting the deviation between the displacement sensor detection value and the actual equivalent displacement; can be calibrated based on experiments; the value is 0.9-1.1); The inner telescopic arm 3 state solving unit calculates based on the following formula: ; Wherein, B is the equivalent displacement of the inner telescopic arm 3; is the displacement sensor detection value of the inner telescopic arm 3; is the inclination sensor detection data of the intermediate telescopic arm 2; is the displacement correction coefficient (experimental calibration; used to adjust the accuracy of the "displacement sensor detection value S"); F is a six-dimensional force vector; G is a simplified stiffness matrix (structure design parameters (obtained through finite element analysis / experimental test)); is the velocity sensor detection value of the inner telescopic arm 3; is the correction coefficient of the force vector to the displacement (experimental calibration (combined with the force-displacement coupling characteristics).

[0034] The stiffness matrix G describes the "force-deformation" relationship of the inner telescopic arm 3, that is, when a unit force is applied, the telescopic arm generates a deformation (deformation = force x stiffness matrix inverse matrix). For a rectangular tube nested structure (such as the inner arm in the invention), the stiffness matrix is simplified to a 3x3 matrix (only the main direction stiffness is retained, and the cross-coupling term is ignored), which is as follows: ; Stiffness along the telescopic arm elongation / shrinkage direction; Stiffness along the left-right direction perpendicular to the telescopic arm elongation / shrinkage direction; Stiffness along the front-back direction perpendicular to the telescopic arm elongation / shrinkage direction; The beneficial effects of the above technical solutions are: Through the cooperation of "monitoring module + state determination module", multi-source data such as strain, displacement, velocity, inclination, and six-dimensional force are fused, and the telescopic arm state is calculated step by step from the outer layer to the inner layer, covering key parameters such as bending, supporting, and displacement, realizing the precise quantification of the telescopic arm state during the winding process, and providing a comprehensive basis for control and fault warning.

[0035] The formula design incorporates correction terms such as strain gradient, temperature, and force-displacement coupling, eliminating the influence of sensor errors, structural nonlinear deformation, and environmental interference on state calculation, improving the calculation accuracy of parameters such as outer support length, intermediate / inner displacement, and ensuring the accuracy of device operation control.

[0036] The layered solving logic of "outer layer to middle layer to inner layer" is adopted, the physical characteristics of the telescopic arm nested structure are fitted, the upper arm state data is used to support the lower arm solving, the solving difficulty of the complex structure is reduced, the engineering implementation is adapted, and the sensor layout and algorithm deployment are facilitated.

[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A telescopic device for winding and arranging wires of an air-core reactor, characterized in that: include: An outer telescopic arm (1), a support base (4) is fixedly provided at the lower end of the outer telescopic arm (1), and the support base (4) is arranged on the equipment base via a position adjustment device; An intermediate telescopic arm (2), the intermediate telescopic arm (2) is slidably sleeved inside the outer telescopic arm (1), and the intermediate telescopic arm (2) is driven by a lifting device to slide axially along the outer telescopic arm (1) inside the outer telescopic arm (1); An inner telescopic arm (3), the inner telescopic arm (3) is slidably sleeved inside the middle telescopic arm (2), and the inner telescopic arm (3) is driven by the second lifting device to slide axially along the middle telescopic arm (2); A control device is electrically connected to the lifting device 1, the lifting device 2, and the position adjustment device.

2. The air-core reactor winding and wiring expansion device according to claim 1, characterized in that: An anti-stuck design structure is added between the outer telescopic arm (1) and the middle telescopic arm (2), and between the middle telescopic arm (2) and the inner telescopic arm (3); the telescopic arm is a rectangular square tube.

3. The air-core reactor winding and wiring expansion device according to claim 1, characterized in that: Anti-seizure design includes ball guides.

4. The air-core reactor winding and wiring expansion device according to claim 1, characterized in that: The position adjustment device is any one of a horizontal rotation device, a one-dimensional translation device, and a two-dimensional translation device.

5. The air-core reactor winding and wiring expansion device according to claim 1, characterized in that: The first lifting device and the second lifting device are either a screw lifting assembly or a pneumatic lifting assembly.

6. The air-core reactor winding and wiring expansion device according to claim 1, characterized in that: Also includes: Monitoring module, the monitoring module includes: Strain detection unit: uses strain sensors and is attached to the key strain areas on the telescopic arm surface; Temperature sensor: used to detect the temperature of key strain areas on the telescopic arm surface; Displacement sensor: a displacement sensor is provided on each of the middle telescopic arm (2) and the inner telescopic arm (3), and the displacement sensor is used to detect the displacement of the corresponding telescopic arm; Speed ​​sensor: Speed ​​sensors are provided on both the middle telescopic arm (2) and the inner telescopic arm (3), and are used to detect the telescopic speed of the corresponding telescopic arm; Inclination sensor: used to detect the inclination of the telescopic arm; Six-dimensional force sensor: installed on the telescopic arm in contact with the winding, used to sense the contact force and torque during the winding process and output the six-dimensional force vector ; 、 、 They are 、 、 Directional contact force; 、 、 They are 、 、 Contact torque in the direction; Strain correction module: used to determine the equivalent strain of each key strain area based on the temperature sensor detection value and the strain gradient of the key strain area on the telescopic arm surface; Alarm module: used to alarm when the equivalent strain of any key strain area is not within the corresponding strain allowable range.

7. The air-core reactor winding and wiring expansion device according to claim 6, characterized in that: Also includes: State determination module: determines the state parameters of the telescopic arm in conjunction with the monitoring module; Display module: used to display the status parameters of the telescopic arm; The status determination module includes: Data pre-processing unit: cleans and time-aligns the raw data output by the monitoring module; The outer telescopic arm (1) state calculation unit obtains the average value of the strain of each key strain area on the surface of the outer telescopic arm (1) and the gradient of the strain in the key strain area on the surface of the outer telescopic arm (1) to obtain the bending state coefficient, and combines the bending state coefficient and the detection data of the inclination sensor of the outer telescopic arm (1) to obtain the equivalent support length of the outer telescopic arm (1); The intermediate telescopic arm (2) state solving unit is used to determine the equivalent displacement of the intermediate telescopic arm (2) by combining the equivalent support length of the outer telescopic arm (1) and the speed sensor detection data of the intermediate telescopic arm (2); The inner telescopic arm (3) state solving unit determines the equivalent displacement of the inner telescopic arm (3) by combining the equivalent displacement of the middle telescopic arm (2) and the six-dimensional force vector of the inner telescopic arm (3).

8. The air-core reactor winding and wiring expansion device according to claim 7, characterized in that: The equivalent strain in the critical strain area is calculated based on the following formula: ； The equivalent strain of the current critical strain area; is the average detection value of the strain sensor in the current key strain area; is the maximum detection value of the strain sensor in the current key strain area; is the minimum detection value of the strain sensor in the current key strain area; is the correction coefficient of strain gradient to equivalent strain; is the linear expansion coefficient of the current critical strain area; is the correction coefficient of the temperature expansion state of the strain area to the equivalent strain; The current key strain area temperature sensor detection value; is the reference temperature.

9. The air-core reactor winding and wiring expansion device according to claim 7, characterized in that: The state calculation unit of the outer telescopic arm (1) is calculated based on the following formula: ； Wherein, L is the equivalent support length of the outer telescopic arm (1); is the arithmetic mean of the average values ​​of the strains in the key strain areas on each surface of the outer telescopic arm (1); is the strain gradient of the key strain area on the surface of the outer telescopic arm; is the average strain correction factor; is the strain gradient correction factor; is the original length of the outer telescopic arm (1); Detection data of the inclination sensor of the outer telescopic arm (1); is the strain sensor detection value of the key stress area at the top of the outer telescopic arm (1); is the strain sensor detection value of the key stress area at the bottom of the outer telescopic arm (1); r is the vertical distance between the center of the key stress area at the top of the outer telescopic arm (1) and the center of the key stress area at the bottom of the outer telescopic arm (1); The state calculation unit of the intermediate telescopic arm (2) is calculated based on the following formula: ； Wherein, D is the equivalent displacement of the middle telescopic arm (2); d is the detection value of the displacement sensor of the middle telescopic arm (2); is the speed sensor detection value of the middle telescopic arm (2); is the strain sensor detection value of the uppermost critical stress area of ​​the middle telescopic arm (2); is the strain sensor detection value of the lowest critical stress area of ​​the middle telescopic arm (2); R is the vertical distance between the center of the highest critical stress area of ​​the middle telescopic arm (2) and the center of the lowest critical stress area of ​​the middle telescopic arm (2); is the correction coefficient of gradient to displacement; is the unit time; is the compensation coefficient.

10. A wire winding system for an air-core reactor, characterized in that: The invention comprises a hollow reactor winding and wiring expansion device as claimed in any one of claims 1 to 9.

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