A virtual fence structure for substation hoisting construction

Abstract

The present invention discloses a virtual fence structure for substation hoisting construction, mainly related to the field of substation hoisting construction. It includes a plurality of fence posts, on the top of which a plurality of photoelectric detection sensors are distributed in an array. An alarm is provided on the fence posts. It also includes anchor rods. A moving track is provided on the outer side of the fence posts, and a detection seat is movably arranged on the moving track. Rollers are provided at the bottom of the detection seat. A steering shaft is rotatably connected to the anchor rod, and a connecting sleeve that can be aligned with the adjacent moving track is provided on the steering shaft. A connecting block for cooperating with the connecting sleeve is provided on the top of the detection seat. A cleaning part is slidably connected to the detection seat. A through hole is provided on the moving track, and after passing through the through hole, the cleaning part is in sliding contact with the top of the photoelectric detection sensor. The beneficial effect of the present invention is that it can automatically detect and investigate the alarm position, avoid false alarms caused by impurity contamination of the sensor, ensure the accuracy of the virtual fence warning, and ensure the efficiency of the hoisting construction.

Description

Technical Field

[0001] The present invention relates to the field of substation hoisting construction protection, and specifically to a virtual fence structure for substation hoisting construction. Background Art

[0002] UHV power grids are characterized by large power transmission capacity and long transmission distance, and are an important support for energy allocation. As one of the "new infrastructure" fields, the scale of UHV projects is constantly expanding. In 2020, the State Grid added 2 UHV DC and 5 UHV AC transmission projects and has been approved for construction. UHV substations are important power conversion nodes. During the construction, installation, operation and maintenance, and overhaul work processes, there are a large number of aerial hoisting operations, and sometimes live working is required. Hoisting operations are risky and difficult. The following problems exist during hoisting operations in UHV substations:

[0003] (1) The crane boom and the hoisted equipment move in the air, and it is impossible to master the safety distance between the crane boom and the live equipment, which is prone to accidents of the high-voltage live equipment discharging to the crane.

[0004] (2) During hoisting operations, there is a lack of intelligent control means and it is impossible to comprehensively control hoisting operations.

[0005] (3) During hoisting operations, in order to ensure that the boom, the hoisted equipment and the surrounding live equipment maintain a sufficient safety distance, it is necessary to repeatedly manually estimate visually for many times, resulting in an extended operation time, a large estimation error, and low operation efficiency.

[0006] In the prior art, there are also guardrail structures improved for the above problems. A virtual protection fence can be formed through pulse sensors to prevent the boom from contacting the live equipment and causing construction accidents. However, for the improved virtual fence structure, during its use, the pulse sensors are prone to false touches due to contamination by sundries, resulting in inaccurate warning information generated by the virtual fence. It is necessary to frequently stop work for adjustment, which affects the normal progress of hoisting construction, reduces the accuracy of early warning, and delays the construction period. Summary of the Invention

[0007] The purpose of the present invention is to provide a virtual fence structure for substation hoisting construction, which can automatically detect and check the alarm position, avoid false alarms caused by impurity contamination of the sensor, ensure the accuracy of the virtual fence early warning, and ensure the efficiency of hoisting construction.

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] A virtual fence structure for substation hoisting construction, comprising a plurality of fence posts connected end to end, with the ends of adjacent fence posts rotatably connected. A plurality of photoelectric detection sensors are arranged in an array on the top of the fence posts, and an alarm is provided on the fence posts and electrically connected to the photoelectric detection sensors. It further includes an anchor rod. A moving track is provided on the outer side of the fence posts, and the moving tracks on adjacent fence posts are all rotatably connected to the anchor rod. A detection seat is movably provided on the moving track. A roller is provided at the bottom of the detection seat, and the roller is in rolling contact with the moving track. A power motor for driving the roller to rotate is provided on the detection seat. A steering shaft is rotatably connected to the anchor rod, and a connecting sleeve that can be aligned with the adjacent moving track is provided on the steering shaft. A connecting block for cooperating with the connecting sleeve is provided on the top of the detection seat. When the detection seat leaves the moving track, the connecting block enters the interior of the connecting sleeve. A cleaning part is slidably connected to the detection seat, and a through hole is provided on the moving track. The cleaning part passes through the through hole and is in sliding contact with the top of the photoelectric detection sensor.

[0010] Further, one end of the connecting sleeve is fixed on the steering shaft, and a telescopic rod for pushing the connecting block out of the connecting sleeve is provided inside the connecting sleeve.

[0011] Further, a notch is provided on the moving track at a position within the rotation range of the connecting sleeve. A first limit switch that can contact the detection seat is provided at the end of the notch close to the moving track, and the first limit switch is electrically connected to the telescopic rod.

[0012] Further, a second limit switch that can contact the detection seat is provided at the end of the notch far from the moving track. A steering motor for driving the steering shaft to rotate is provided on the anchor rod, and the second limit switch is electrically connected to the steering motor.

[0013] Further, the first limit switch or the second limit switch includes a support rod fixed in the notch. A moving contact block and a static contact block are provided on the support rod. A return spring is provided between the moving contact block and the static contact block. The moving contact block is slidably connected to the support rod, and the moving contact block contacts the static contact block under the drive of the detection seat.

[0014] Further, a chute is provided on the support rod, the static contact block is fixed in the chute, the moving contact block is slidably connected in the chute, and a contact wheel is rotatably connected to the end of the moving contact block. The contact wheel is in rolling contact with the detection seat.

[0015] Further, a limit block is provided at the bottom of the detection seat, and the limit block is slidably connected to the moving track. The connecting block is slidably connected to the connecting sleeve. Both the limit block and the connecting block are T-shaped.

[0016] Further, a receiving hole is provided on the detection seat, and a camera is provided in the receiving hole.

[0017] Furthermore, the bottom of the anchor rod is conical, a rotating sleeve is provided on the movable track, the rotating sleeve is arranged on the outside of the anchor rod, and a nut for limiting the rotating sleeve is provided on the anchor rod.

[0018] Furthermore, the photoelectric detection sensor is an infrared or laser sensor, and the cleaning part is made of nylon or sponge.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The present invention sets a plurality of fence poles, which are connected end to end to form a virtual fence structure surrounding the substation construction site. A plurality of photoelectric detection sensors are arranged in an array on the top of the fence poles. The photoelectric detection sensors are used to vertically transmit and receive light signals, so that when the boom crosses the safe range of the live equipment, the alarm generates an alarm, thereby avoiding the potential contact hazard between the boom and the live equipment, ensuring the safety of the hoisting construction, and the monitoring range of the virtual fence can be extended to high altitudes, realizing more effective monitoring of the high-altitude boom and the hoisted objects, further improving the accuracy and convenience of early warning monitoring;

[0021] 2. When a photoelectric detection sensor somewhere generates a signal that causes the alarm to sound an early warning, the detection seat is driven by the power motor to roll the roller to move on the moving track, so that the detection seat is accurately moved to the position of the photoelectric detection sensor. The cleaning part penetrates the through hole and slides in contact with the top of the photoelectric detection sensor to clean the top. If the alarm continues, it is not caused by impurities. It is necessary to stop the machine in time to adjust the position of the boom and then perform the lifting operation. If the alarm is lifted after cleaning, it is because the interference of impurities causes the photoelectric detection sensor to receive an erroneous signal. At this time, the boom has not crossed the safety range formed by the virtual fence to operate. Therefore, the operation can continue after the alarm disappears without stopping for adjustment, which greatly improves the accuracy of the early warning and ensures the construction period.

[0022] 3. Since the fence poles are composed of multiple pieces connected end to end and are in a shape that is adapted to the substation site, the detection seat needs to turn when moving between different fence poles. At this time, the connection block on the detection seat and the connecting sleeve on the steering shaft are used to transfer the detection seat to the steering shaft, and the rotation of the steering shaft drives the connecting sleeve to rotate and align it with the moving track on the adjacent fence pole, so that the detection seat is transferred from the steering shaft to the moving track on the adjacent fence pole, realizing the free turning of the detection seat between fence poles at different intersection angles, so that the detection seat can be quickly moved to the designated photoelectric detection sensor position for cleaning, thereby checking and confirming the early warning information, ensuring the smoothness of the movement of the detection seat and improving the efficiency of detection and investigation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Appendix Figure 1 is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Appendix Figure 2 is the appendix of the present invention Figure 1 and is a partial enlarged view of part A in

[0025] Appendix Figure 3 is the left view of the present invention.

[0026] Appendix Figure 4 is the appendix of the present invention Figure 3 and is a cross-sectional view taken along the direction of B-B in

[0027] Appendix Figure 5 is the appendix of the present invention Figure 4 and is a partial enlarged view of part C in

[0028] Appendix Figure 6 is the appendix of the present invention Figure 4 and is a cross-sectional view taken along the direction of D-D in

[0029] Appendix Figure 7 is the appendix of the present invention Figure 6 and is a partial enlarged view of part E in

[0030] Reference numerals shown in the appended drawings:

[0031] 1, railing; 2, photoelectric detection sensor; 3, anchor rod; 4, moving track; 5, detection seat; 6, roller; 7, power motor; 8, steering shaft; 9, connecting sleeve; 10, connecting block; 11, cleaning part; 12, through hole; 13, telescopic rod; 14, notch; 15, first limit switch; 16, second limit switch; 17, steering motor; 18, support rod; 19, moving contact block; 20, static contact block; 21, return spring; 22, chute; 23, contact wheel; 24, limit block; 25, accommodation hole; 26, camera; 27, rotating sleeve; 28, nut. Detailed embodiments

[0032] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by this application.

[0033] The present invention relates to a virtual fence structure for substation hoisting construction. The main structure includes a plurality of railing rods 1 connected end to end. The height of the railing rods 1 is not high, generally only a few dozen centimeters, which reduces the construction difficulty. The ends of adjacent railing rods 1 are rotatably connected. Multiple railing rods 1 can be set according to the specific shape of the substation periphery, so that a plurality of railing rods 1 surround the substation to form a virtual fence structure, which can adapt to the use of substations with different shapes and improve the adaptability of the device. A plurality of photoelectric detection sensors 2 are arranged in an array at the top of the railing rods 1. The photoelectric detection sensors 2 can use any infrared, ordinary light or laser sensor structure in the prior art. It has both transmitting and receiving components at the same time. By vertically transmitting detection light, the detection range covers the high altitude. When the reflected signal cannot be received, it indicates that there is no situation of over-line hoisting above the virtual fence. Once over-line hoisting occurs, the sensor structure can receive the signal. An alarm is provided on the railing rod 1 and is electrically connected to the photoelectric detection sensor 2. The alarm gives an early warning to remind the hoisting construction to stop work in time for inspection and troubleshooting, realizing accurate monitoring of the high-altitude hoisting construction range, effectively avoiding contact with substation equipment, and improving the safety of hoisting construction. The alarm can also be set in the control room of the crane and is wirelessly connected to the photoelectric detection sensor 2 through a wireless transmission module, so that the early warning information can be transmitted to the crane driver more quickly, causing the hoisting construction to stop in time, further improving the timeliness of early warning response and ensuring the safety of hoisting construction;

[0034] It further includes an anchor rod 3. The anchor rod 3 is located at the connection of adjacent guardrails 1 and is fixed to the ground to realize the connection of adjacent guardrails 1. A moving track 4 is welded or bolted to the outer side of the guardrail 1. The moving tracks 4 on adjacent guardrails 1 are all rotatably connected to the anchor rod 3, so that the crossing angle between adjacent guardrails 1 can be adjusted, thereby forming virtual fence structures of different shapes, ensuring the adaptability to substations of different shapes. A detection seat 5 is movably arranged on the moving track 4. The detection seat 5 is used to move to the optoelectronic detection sensor to confirm and check the warning signal. A roller 6 is arranged at the bottom of the detection seat 5. The roller 6 is in rolling contact with the moving track 4. A power motor 7 for driving the roller 6 to rotate is arranged on the detection seat 5. The power motor 7 is used to drive the roller 6 to move on the moving track 4 to realize the movement of the detection seat 5 to the position of the specified optoelectronic detection sensor 2. A steering shaft 8 is rotatably connected to the anchor rod 3. The steering shaft 8 can rotate along the center line of the anchor rod 3. A connecting sleeve 9 that can be aligned with the adjacent moving track 4 is arranged on the steering shaft 8. The connecting sleeve 9 is of a hollow structure and is aligned with the moving track 4 on the adjacent guardrail 1 through rotation, so that the detection seat 5 can move onto the steering shaft 8 through the rotation of the roller 6 and rotate with the steering shaft 8. A connecting block 10 that cooperates with the connecting sleeve 9 is arranged at the top of the detection seat 5. When the detection seat 5 leaves the moving track 4, the connecting block 10 enters the interior of the connecting sleeve 9. When the front end of the detection seat 5 starts to leave the moving track 4, the front end of the connecting block 10 starts to enter the interior of the connecting sleeve 9, so that when the detection seat 5 completely disengages from the moving track 4, the connecting block 10 has completely entered the connecting sleeve 9, realizing the transfer of the detection seat 5 towards the steering shaft 8. After the steering shaft 8 rotates a certain angle and is aligned with the moving track 4 on the adjacent guardrail 1, it moves back onto the adjacent moving track 4 under the action of the roller 6 to realize the successful turning of the detection seat 5, realizing the smooth movement of the detection seat 5 between different guardrails 1, enabling it to quickly and accurately move to the position of the optoelectronic detection sensor 2 that generates the signal. A cleaning part 11 is slidably connected to the detection seat 5. The cleaning part 11 is driven to slide under the action of an electric cylinder or a pneumatic cylinder. A through hole 12 is arranged on the moving track 4. The cleaning part 11 passes through the through hole 12 and is in sliding contact with the top of the optoelectronic detection sensor 2. After the detection seat 5 moves into place, the cleaning part 11 passes through the through hole 12 and contacts the top of the optoelectronic detection sensor 2 to realize the cleaning of the top. At this time, if the warning signal disappears, it is judged that the received reflected signal is blocked by impurities. After the warning disappears, the hoisting construction can continue, without causing construction interruption or requiring a work stoppage for investigation. If the warning signal does not disappear, it is judged that there is a boom above the safety range of the virtual fence, and the hoisting position needs to be adjusted in time to ensure the safety of the high-altitude hoisting construction, avoid the interference of impurities to the optoelectronic detection sensor 2, ensure the accuracy of the warning information, reduce the delay of the project duration caused by the confirmation and investigation of the warning information, and comprehensively ensure the construction efficiency and safety.

[0035] Preferably, one end of the connecting sleeve 9 is welded or bolted to the steering shaft 8. An expansion rod 13 for pushing the connecting block 10 out of the connecting sleeve 9 is arranged inside the connecting sleeve 9. With such a setting, after the connecting block 10 on the detection seat 5 enters the inside of the connecting sleeve 9, when it transfers from the steering shaft 8 to the moving track 4 on another guardrail 1, if the contact between the roller 6 and the moving track 4 is incomplete and the power is insufficient, the expansion rod 13 is used to push the connecting block 10, so that the roller 6 at the bottom of the detection seat 5 smoothly contacts the moving track 4, generating sufficient power and making the transfer towards the moving track 4 more accurate and smooth, avoiding the situation that the detection seat 5 gets stuck on the steering shaft 8, and making the movement of the detection seat 5 more smooth and accurate. Specifically, an electromagnet can be arranged at the end of the expansion rod 13 and a magnetic block can be arranged on the connecting block 10. When the connecting block 10 enters the inside of the connecting sleeve 9, the magnetic block contacts and attracts the electromagnet, making the structure of the detection seat 5 on the steering shaft 8 more firm and ensuring the stability of the detection seat 5 during the steering process.

[0036] Preferably, a notch 14 is arranged on the moving track 4 at a position within the rotation range of the connecting sleeve 9. A first limit switch 15 that can contact the detection seat 5 is arranged at the end of the notch 14 close to the moving track 4. The first limit switch 15 is electrically connected to the expansion rod 13. The arrangement of the notch 14 no longer interferes with the movement of the detection seat 5, so that it contacts the first limit switch 15 after entering the notch 14, driving the expansion rod 13 to contract, leaving space for the connecting block 10 to enter the inside of the connecting sleeve 9, ensuring that the detection seat 5 is smoothly transferred to the steering shaft 8 and preparing for the subsequent pushing of the connecting block 10 by the expansion rod 13.

[0037] Preferably, a second limit switch 16 that can contact the detection seat 5 is arranged at the end of the notch 14 far from the moving track 4. A steering motor 17 for driving the steering shaft 8 to rotate is arranged on the anchor rod 3. Specifically, the steering motor 17 is welded or bolted to the steering shaft 8, and the steering shaft 8 is fixed on the output shaft of the steering motor 17. The second limit switch 16 is electrically connected to the steering motor 17. With such a setting, after the detection seat 5 moves to the end of the notch 14 and separates from the moving track 4, the second limit switch 16 acts in time to drive the steering shaft 8 to rotate, realizing the automatic switching of the steering of the detection seat 5 on different guardrails 1, and improving the smoothness and moving speed of the movement of the detection seat 5.

[0038] Preferably, the first limit switch 15 or the second limit switch 16 includes a support rod 18, and at least one of them includes a support rod 18 that plays a supporting role. The support rod 18 is welded or bolted to the notch 14. A moving contact block 19 and a static contact block 20 are provided on the support rod 18, and both are electrically connected to the steering motor 17 or the telescopic rod 13 that needs to be controlled. A return spring 21 is provided between the moving contact block 19 and the static contact block 20. The moving contact block 19 is slidably connected to the support rod 18. The moving contact block 19 contacts the static contact block 20 under the drive of the detection seat 5. When the detection seat 5 moves to contact the moving contact block 19, it forces the moving contact block 19 to slide towards the static contact block 20 to compress the return spring 21, so that the two contacts generate a control signal. After the detection seat 5 leaves, the moving contact block 19 automatically resets under the action of the return spring 21 to prepare for the next control, causing the steering motor 17 or the telescopic rod 13 to act. Corresponding first limit switches 15 or second limit switches 16 are provided at the moving tracks 4 on the adjacent guardrails 1, respectively controlling the rotation opening and closing of the steering motor 17 or the extension and contraction of the telescopic rod 13, making the entire steering process more efficient and accurate.

[0039] Preferably, a chute 22 is provided on the support rod 18. The static contact block 20 is welded or bolted to the chute 22. The moving contact block 19 is slidably connected in the chute 22. When the moving contact block 19 slides, it can accurately contact the static contact block 20. A contact wheel 23 is rotatably connected to the end of the moving contact block 19. The contact wheel 23 is in rolling contact with the detection seat 5. When the detection seat 5 slides into the notch 14, it contacts the contact wheel 23. A part of the arc surface of the contact wheel 23 is located on the moving track of the detection seat 5. In this way, the detection seat 5 will force the contact wheel 23 and the moving contact block 19 to slide along the vertical direction of the movement, so that it can smoothly contact the moving contact block 20, making the cooperation between the two more accurate and stable.

[0040] Preferably, a limit block 24 is welded or integrally formed at the bottom of the detection seat 5. The limit block 24 is slidably connected to the moving track 4. The connecting block 10 is slidably connected to the connecting sleeve 9. Both the limit block 24 and the connecting block 10 are T-shaped. The T-shaped structure can effectively limit the sliding connection between the connecting block 10 and the connecting sleeve 9 and the sliding connection between the limit block 24 and the moving track 4. The contact positions of the two are more stable and the sliding connection is smoother, ensuring the stability of the detection seat 5 on the moving track 4 or the steering shaft 8, making the entire moving and steering process smoother and more accurate.

[0041] Preferably, a receiving hole 25 is provided on the detection base 5, and a camera 26 is provided in the receiving hole 25. The setting of the camera 26 can timely grasp the presence or absence of impurities on the photoelectric detection sensor 2 when the detection base 5 moves to the position where a warning signal occurs, and can monitor the cleaning condition of the impurities, preventing the cleaning part 11 from not cleaning it thoroughly, resulting in an incorrect judgment of the warning information, and further ensuring the accuracy of the investigation of the warning information.

[0042] Preferably, the bottom of the anchor rod 3 is conical, making it easier to anchor to the ground to achieve the rapid installation of the virtual fence. A rotating sleeve 27 is fixedly welded or integrally formed on the moving track 4. The rotating sleeve 27 is sleeved outside the anchor rod 3, and the rotating sleeve 27 is rotatably connected to the outside of the anchor rod 3. A nut 28 for limiting the rotating sleeve 27 is threadedly connected to the anchor rod 3. Specifically, a fixing piece is provided above the anchor rod 3 to limit the top position of the rotating sleeve 27, making it more convenient to connect and disassemble the moving track 4 and the anchor rod 3, and further improving the disassembly and assembly efficiency of the device.

[0043] Preferably, the photoelectric detection sensor 2 is an infrared or laser sensor, making the detection fiber more accurate and less affected by the external environment. The cleaning part 11 is made of nylon or sponge material, making the cleaning effect on rainwater, mud, etc. better.

[0044] Working principle: The present invention sets a plurality of fence poles 1, which are connected end to end to form a virtual fence structure surrounding the substation construction site. A plurality of photoelectric detection sensors 2 are arranged in an array on the top of the fence poles 1. The photoelectric detection sensors 2 are used to vertically emit and receive light signals, so that when the boom crosses the safe range of the live equipment, the alarm generates an alarm, thereby avoiding the potential contact danger between the boom and the live equipment, ensuring the safety of the hoisting construction, and the monitoring range of the virtual fence can be extended to high altitudes, so as to achieve more effective monitoring of the high-altitude boom and the hoisted objects, further improving the accuracy and convenience of early warning monitoring; when the photoelectric detection sensor 2 at a certain location generates a signal to cause the alarm to generate an early warning, the detection seat 5 drives the roller 6 to roll through the power motor 7 to achieve movement on the moving track 4, so that the detection seat 5 accurately moves to the position of the photoelectric detection sensor 2, and the cleaning portion 11 penetrates the through hole 12 and then slides in contact with the top of the photoelectric detection sensor 2 to achieve cleaning of the top thereof. If the alarm continues, it is not caused by interference from impurities, and it is necessary to stop the machine in time to adjust the position of the boom before the hoisting operation. Industry, if the alarm is lifted after cleaning, it is because the interference of impurities causes the photoelectric detection sensor 2 to receive an erroneous signal. At this time, the boom has not crossed the safety range formed by the virtual fence to operate, so the operation can continue after the alarm disappears, and there is no need to stop for adjustment, which greatly improves the accuracy of the early warning and ensures the construction period; since the fence pole 1 is a shape that is adapted to the substation site and is composed of multiple end-to-end connections, the detection seat 5 needs to turn when moving between different fence poles 1. At this time, the connection block 10 on the detection seat 5 and the connection sleeve 9 on the steering shaft 8 are used to make the detection seat 5 transferred to the steering shaft 8, and the connection sleeve 9 is driven to rotate under the rotation of the steering shaft 8 and then aligned with the moving track 4 on the adjacent fence pole 1, so that the detection seat 5 is transferred from the steering shaft 8 to the moving track 4 on the adjacent fence pole 1, realizing the free turning of the detection seat 5 between the fence poles 1 at different intersection angles, so that the detection seat 5 can quickly move to the designated photoelectric detection sensor 2 position for cleaning, thereby checking and confirming the early warning information, ensuring the smoothness of the movement of the detection seat 5, and improving the efficiency of detection and investigation.

Claims

1. A virtual fence structure for substation hoisting construction, comprising a plurality of fence posts (1) connected end to end, the ends of adjacent fence posts (1) being rotatably connected, a plurality of optoelectronic detection sensors (2) being arranged in an array at the top of the fence posts (1), and an alarm being provided on the fence posts (1) and electrically connected to the optoelectronic detection sensors (2), characterized in that: It further includes an anchor rod (3). A moving track (4) is provided on the outer side of the guardrail rod (1). The moving tracks (4) on adjacent guardrail rods (1) are all rotatably connected to the anchor rod (3). A detection seat (5) is movably provided on the moving track (4). A roller (6) is provided at the bottom of the detection seat (5). The roller (6) is in rolling contact with the moving track (4). A power motor (7) for driving the roller (6) to rotate is provided on the detection seat (5). A steering shaft (8) is rotatably connected to the anchor rod (3). A connecting sleeve (9) that can be aligned with the adjacent moving track (4) is provided on the steering shaft (8). A connecting block (10) that is used in cooperation with the connecting sleeve (9) is provided at the top of the detection seat (5). When the detection seat (5) leaves the moving track (4), the connecting block (10) enters the inside of the connecting sleeve (9). A cleaning part (11) is slidably connected to the detection seat (5). A through hole (12) is provided on the moving track (4). The cleaning part (11) passes through the through hole (12) and is in sliding contact with the top of the photoelectric detection sensor (2).

2. The virtual fence structure for substation hoisting construction according to claim 1, characterized in that: One end of the connecting sleeve (9) is fixed on the steering shaft (8). An expansion rod (13) for pushing the connecting block (10) out of the connecting sleeve (9) is provided inside the connecting sleeve (9).

3. The virtual fence structure for substation hoisting construction according to claim 2, characterized in that: A notch (14) is provided on the moving track (4) at a position within the rotation range of the connecting sleeve (9). A first limit switch (15) that can contact the detection seat (5) is provided at the end of the notch (14) close to the moving track (4). The first limit switch (15) is electrically connected to the expansion rod (13).

4. The virtual fence structure for substation hoisting construction according to claim 3, characterized in that: A second limit switch (16) that can contact the detection seat (5) is provided at the end of the notch (14) far from the moving track (4). A steering motor (17) for driving the steering shaft (8) to rotate is provided on the anchor rod (3). The second limit switch (16) is electrically connected to the steering motor (17).

5. The virtual fence structure for substation hoisting construction according to claim 4, characterized in that: The first limit switch (15) or the second limit switch (16) includes a support rod (18). The support rod (18) is fixed inside the notch (14). A moving contact block (19) and a static contact block (20) are provided on the support rod (18). A return spring (21) is provided between the moving contact block (19) and the static contact block (20). The moving contact block (19) is slidably connected to the support rod (18). The moving contact block (19) contacts the static contact block (20) under the drive of the detection seat (5).

6. The virtual fence structure for substation hoisting construction according to claim 5, characterized in that: A sliding groove (22) is provided on the support rod (18). The static contact block (20) is fixed inside the sliding groove (22). The moving contact block (19) is slidably connected inside the sliding groove (22). A contact wheel (23) is rotatably connected to the end of the moving contact block (19). The contact wheel (23) is in rolling contact with the detection seat (5).

7. The virtual fence structure for substation hoisting construction according to claim 1, characterized in that: A limit block (24) is provided at the bottom of the detection seat (5). The limit block (24) is slidably connected to the moving track (4). The connecting block (10) is slidably connected to the connecting sleeve (9). Both the limit block (24) and the connecting block (10) are T-shaped.

8. The virtual fence structure for substation hoisting construction according to claim 1, wherein: The detection base (5) is provided with a receiving hole (25), and a camera (26) is arranged in the receiving hole (25).

9. The virtual fence structure for substation hoisting construction according to claim 1, characterized in that: The bottom of the anchor rod (3) is conical. A rotating sleeve (27) is arranged on the moving track (4), and the rotating sleeve (27) is sleeved outside the anchor rod (3). A nut (28) for limiting the rotating sleeve (27) is arranged on the anchor rod (3).

10. The virtual fence structure for substation hoisting construction according to claim 1, characterized in that: The photoelectric detection sensor (2) is an infrared or laser sensor, and the cleaning part (11) is made of nylon or sponge material.

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