High-voltage overhead line safety distance alarm and use method thereof

Abstract

The invention discloses a high-voltage overhead line safety distance alarm and a using method thereof, and belongs to the technical field of electric power facilities. The sliding guide rail comprises a first guide rope, a second guide rope and a fixing piece, the first guide rope and the second guide rope are arranged up and down and are both located below a spacer on the split conductor, and the two ends of the first guide rope and the two ends of the second guide rope are both fixedly connected with the tower through the fixing piece. The sliding body comprises a first sliding block, a connecting rod, a second sliding block, a mounting rod, an alarm piece and a detection piece which are sequentially connected from top to bottom, a first through hole is formed in the first sliding block, a second through hole is formed in the second sliding block, and the detection piece is electrically connected with the alarm piece. According to the high-voltage overhead line safety distance alarm adopting the structure and the use method thereof, the obstruction of the spacer on the movement of the detection piece and the alarm piece on the split conductor can be eliminated, the use convenience of the device is improved, and the maintenance of the high-voltage overhead line is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of power facility technology, and in particular relates to a safety distance alarm for high-voltage overhead lines and its usage method. Background Technology

[0002] When large machinery operates within the protection zone of high-voltage overhead lines, power outages don't only occur when the machinery is in direct contact with the line. Rather, when the closest distance between the machinery and the line is less than the safe distance, the high voltage can break down the air, discharging to the machinery and causing a power outage. In severe cases, this can even result in injuries or fatalities. Currently, to effectively maintain high-voltage cables and prevent accidents, safety distance alarms are typically installed on the working arms of large machinery. However, in actual construction, not all large machinery is equipped with these alarms, leading to shortages and difficulties in their deployment.

[0003] To address the aforementioned issues, safety distance alarm devices installed on high-voltage overhead lines have emerged. For example, Chinese patent application number CN202211415227.3 proposes an overhead line safety distance alarm device and its usage method, which includes an intelligent clamp, an insulated telescopic rod, and an ultrasonic detector. The insulated telescopic rod is connected to the intelligent clamp and can be fixed to the split conductor through the intelligent clamp. The intelligent clamp has a controllable pulley inside. The ultrasonic detector is located below the insulated telescopic rod, and an audible and visual alarm is connected to the bottom of the ultrasonic detector. The controllable pulley includes a pulley and an electric mechanism. By remotely controlling the electric mechanism, the alarm device can move on the split conductor according to the change of position of the large machinery under the split conductor.

[0004] While the aforementioned structure allows the alarm device's position on the split conductors to be adjusted according to the operating location of large machinery, in actual use, the multiple split conductors between two towers are typically secured with spacers to maintain stable spacing. When the alarm device moves to the spacer position, a drone is required to remove it from the split conductor, carry it over the spacer, and then reinstall it on the split conductor for use. This process demands a high level of drone operator proficiency, and removal or installation failures are prone to occur, thus affecting the ease of use of the alarm device.

[0005] To solve the above problems, a new type of high-voltage overhead line safety distance alarm is needed. Summary of the Invention

[0006] The purpose of this invention is to provide a safety distance alarm for high-voltage overhead lines and its usage method, which can remove the obstruction of the spacer bar on the movement of the detection and alarm components on the split conductor, improve the ease of use of the device, and facilitate the maintenance of high-voltage overhead lines.

[0007] To achieve the above objectives, the present invention provides a safety distance alarm for high-voltage overhead lines, comprising a sliding guide rail and a sliding body. The sliding guide rail includes a first guide rope, a second guide rope, and a fixing member. The first guide rope and the second guide rope are arranged vertically and are both located below the spacer bar on the split conductor. Both ends of the first guide rope and the second guide rope are fixedly connected to the tower through the fixing member. The sliding body includes a first slider, a connecting rod, a second slider, a mounting rod, an alarm element, and a detection element connected sequentially from top to bottom. The first slider has a first through hole for the first guide rope to pass through, and the second slider has a second through hole for the second guide rope to pass through. The detection element and the alarm element are electrically connected.

[0008] Preferably, the fixing component includes a mounting bracket fixedly connected to the tower, two near-L-shaped support columns fixedly connected to the mounting bracket, the horizontal part of the near-L-shaped support column being fixedly connected to the mounting bracket, the vertical part of the near-L-shaped support column being a threaded rod, a fixing ring being sleeved on the threaded rod, the bottom surface of the fixing ring being in contact with the horizontal part, and a tightening nut being provided on the top surface of the fixing ring being threadedly connected to the threaded rod. The ends of the first guide rope and the second guide rope are respectively fixedly connected to one of the fixing rings.

[0009] Preferably, the bottom of the spacer bar is detachably connected to a support member. The support member has clearance holes for the slider to pass through. The clearance holes include a first hole, a second hole, a third hole, and a fourth hole connected sequentially from top to bottom. The first hole corresponds to the first slider, the second hole corresponds to the connecting rod, the third hole corresponds to the second slider, and the fourth hole penetrates the bottom surface of the support member and corresponds to the top of the mounting rod. The third hole has symmetrically arranged support plates on both sides of the fourth hole. The bottom surface of the support plate is fixedly connected to a spring. The bottom end of the spring is fixedly connected to a groove on the inner wall of the bottom surface of the third hole. The top surface of the support plate is in contact with the second guide rope under the support of the spring.

[0010] Preferably, an upper arc-shaped guide plate is fixedly connected to the top of each of the three holes' inlets and outlets. The height of the upper arc-shaped guide plate from the ground gradually increases from the end closest to the three holes to the end furthest from the three holes. Lower arc-shaped guide plates are fixedly connected to both ends of the support plate. The height of the lower arc-shaped guide plate from the ground gradually decreases from the end closest to the three holes to the end furthest from the three holes.

[0011] Preferably, the support member has a mounting groove at the top, the bottom edge of the spacer is located in the mounting groove, the top of the two side walls of the mounting groove has mounting holes, a lead screw passes through the two mounting holes, the lead screw is located above the bottom edge, and the two ends of the lead screw are threaded with locking nuts.

[0012] Preferably, both the bottom corner of the hole and the corner of the second slider are chamfered.

[0013] Preferably, two protrusions are provided on each of the two side walls of the second slider, and the line connecting the protrusions is parallel to the length direction of the second guide rope.

[0014] Preferably, the first through hole is provided with a first roller that is tactilely connected to the first guide rope, and the first roller is evenly distributed along the circumferential direction of the first guide rope; the second through hole is provided with a second roller that is tactilely connected to the second guide rope, and the second roller is evenly distributed along the circumferential direction of the second guide rope.

[0015] Preferably, the first slider, the connecting rod, the second slider, the mounting rod, the alarm element, and the detector element are detachably connected to each other. The first slider and the second slider have the same structure, each including a detachably connected first half and a second half. The first half and the second half are provided with a semi-circular through groove on the side surface that is close to each other. The two opposite through grooves are spliced ​​together to form the first through hole or the second through hole.

[0016] The method for using a high-voltage overhead line safety distance alarm includes the following steps:

[0017] Step 1: Use the fixing device to fix the first guide rope and the second guide rope between the two towers;

[0018] Step 2: Slidingly connect the slider to the first guide rope and the second guide rope;

[0019] Step 3: Use a drone or dragging tool to drag the sliding body so that it moves along the length of the first guide rope and the second guide rope to the top of the construction area, so that the detector can detect the construction area in real time. If construction machinery appears within the set detection distance range, the detector will transmit a signal to the alarm, and the alarm will sound an alarm. After the construction machinery leaves the detection distance range, the detector will transmit a signal to the alarm, and the alarm will stop sounding.

[0020] Therefore, the high-voltage overhead line safety distance alarm device and its usage method using the above-described structure have the following beneficial effects:

[0021] 1. By utilizing the specific connection relationship between the first guide rope, the second guide rope, and the sliding body, the obstruction of the spacer bar to the movement of the sliding body (with detection and alarm components) on the split conductor can be removed, eliminating the need to reinstall the sliding body and improving the ease of use of this device; the sliding body can stop at any position between two towers, realizing the detection of the safe distance between construction machinery and high-voltage overhead lines in large-span construction areas, which is beneficial for the maintenance of large-span high-voltage overhead lines.

[0022] 2. The second guide rope is used to improve the stability of the sliding body during movement, prevent the sliding body from overturning, and thus ensure the reliability of the detection results of the detector.

[0023] 3. The support is fixedly connected to the bottom of the spacer bar. The support is used to support the second guide rope, so that the distance between the second guide rope and the split wire remains relatively stable, thereby ensuring the reliability of the detection results of the detector.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an embodiment of a safety distance alarm for high-voltage overhead lines according to the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a support component in a high-voltage overhead line safety distance alarm device according to an embodiment of the present invention.

[0027] In the diagram: 1. Sliding guide rail; 101. First guide rope; 102. Second guide rope; 103. Fixing component; 1031. Mounting bracket; 1032. Near-L-shaped support column; 1033. Fixing ring; 1034. Tightening nut; 2. Sliding body; 201. First slider; 2011. First half; 2012. Second half; 202. Connecting rod; 203. Second slider; 204. Mounting rod; 205. Alarm component; 206. Detector component; 3. Split wire; 4. Spacer bar; 5. Support component; 6. Clearance hole; 61. Hole 1; 62. Hole 2; 63. Hole 3; 64. Hole 4; 65. Support plate; 66. Spring; 7. Upper arc-shaped guide plate; 8. Lower arc-shaped guide plate; 9. Mounting groove; 10. Lead screw; 11. Locking nut; 12. Protrusion. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example

[0031] Reference Figure 1-2 As shown, this embodiment provides a safety distance alarm for high-voltage overhead lines, including a sliding rail 1 and a sliding body 2. The sliding rail 1 includes a first guide rope 101, a second guide rope 102, and a fixing member 103. The first guide rope 101 and the second guide rope 102 are arranged vertically and are both located below the spacer 4 on the split conductor 3. Both ends of the first guide rope 101 and the second guide rope 102 are fixedly connected to the tower through the fixing member 103. The sliding body 2 includes a first slider 201, a connecting rod 202, a second slider 203, a mounting rod 204, an alarm element 205, and a detection element 206 connected sequentially from top to bottom. The first slider 201 has a first through hole for the first guide rope 101 to pass through, and the second slider 203 has a second through hole for the second guide rope 102 to pass through. The detection element 206 and the alarm element 205 are electrically connected.

[0032] To use, follow these steps:

[0033] Step 1: Use fastener 103 to fix the first guide rope 101 and the second guide rope 102 between the two towers;

[0034] Step 2: Slide the slider 2 onto the first guide rope 101 and the second guide rope 102;

[0035] Step 3: Use a drone or dragging tool to drag the sliding body 2 so that it moves along the length of the first guide rope 101 and the second guide rope 102 to the top of the construction area, so that the detector 206 can detect the construction area in real time. If construction machinery appears within the set detection distance range, the detector 206 will transmit a signal to the alarm 205, and the alarm 205 will sound an alarm. After the construction machinery leaves the detection distance range, the detector 206 will transmit a signal to the alarm 205, and the alarm 205 will stop sounding the alarm.

[0036] During use, the specific connection between the first guide rope 101, the second guide rope 102, and the sliding body 2 can remove the obstruction of the spacer bar 4 on the movement of the sliding body 2 (with the detector 206 and alarm 205) on the split conductor 3, eliminating the need to reinstall the sliding body 2 and improving the ease of use of the device. The sliding body 2 can stop at any position between two towers, enabling the detection of the safe distance between construction machinery and high-voltage overhead lines in large-span construction areas, which is beneficial for the maintenance of large-span high-voltage overhead lines. The second guide rope 102 improves the stability of the sliding body 2 during movement, preventing the sliding body 2 from tipping over, thereby ensuring the reliability of the detection results of the detector 206.

[0037] In a further preferred embodiment, the fixing component 103 includes a mounting bracket 1031 fixedly connected to the tower, and two near-L-shaped support columns 1032 fixedly connected to the mounting bracket 1031. The horizontal portion of the near-L-shaped support column 1032 is fixedly connected to the mounting bracket 1031, and the vertical portion of the near-L-shaped support column 1032 is a threaded rod. A fixing ring 1033 is fitted onto the threaded rod, the bottom surface of the fixing ring 1033 contacts the horizontal portion, and the top surface of the fixing ring 1033 is provided with a tightening nut 1034 that is threadedly connected to the threaded rod. The ends of the first guide rope 101 and the second guide rope 102 are respectively fixedly connected to a fixing ring 1033.

[0038] In use, tightening the top nut 1034 can fix the first guide rope 101 and the second guide rope 102 to the mounting bracket 1031, and then to the tower. Loosening the top nut 1034 can disassemble the first guide rope 101 and the second guide rope 102.

[0039] In a further optimized scheme, a support member 5 is detachably connected to the bottom of the spacer 4. The support member 5 is provided with a clearance hole 6 for the slide body 2 to pass through. The clearance hole 6 includes a first hole 61, a second hole 62, a third hole 63, and a fourth hole 64 connected sequentially from top to bottom. The first hole 61 is corresponding to the first slider 201, the second hole 62 is corresponding to the connecting rod 202, the third hole 63 is corresponding to the second slider 203, and the fourth hole 64 penetrates the bottom surface of the support member 5 and is corresponding to the top of the mounting rod 204. The third hole 63 is provided with a support plate 65 symmetrically arranged on both sides of the fourth hole 64. A spring 66 is fixedly connected to the bottom surface of the support plate 65. The bottom end of the spring 66 is fixedly connected to a groove on the inner wall of the bottom surface of the third hole 63. The top surface of the support plate 65 is in contact with the second guide rope 102 under the support of the spring 66.

[0040] When the slide body 2 does not pass through the clearance hole 6, the support plate 65 and the second guide rope 102 are in contact and can provide a certain support for the second guide rope 102, increase the stability of the second guide rope 102, and at the same time reduce the load pressure of the mounting bracket 1031 in the fixing component 103, thereby improving the overall service life of the sliding guide rail 1.

[0041] In a further optimized design, upper arc-shaped guide plates 7 are fixedly connected to the top of the inlet and outlet of the three holes 63. The height of the upper arc-shaped guide plates 7 from the ground gradually increases from the end closer to the three holes 63 to the end farther away from the three holes 63. Lower arc-shaped guide plates 8 are fixedly connected to both ends of the support plate 65. The height of the lower arc-shaped guide plates 8 from the ground gradually decreases from the end closer to the three holes 63 to the end farther away from the three holes 63.

[0042] In use, when the slider 2 passes through the clearance hole 6, the upper arc-shaped guide plate 7 and the lower arc-shaped guide plate 8 together guide the second slider 203, allowing the slider 2 to pass smoothly through the clearance hole 6. When the lower arc-shaped guide plate 8 contacts the second slider 203, the second slider 203 applies downward pressure to the lower arc-shaped guide plate 8, causing the spring 66 to compress. The lower arc-shaped guide plate 8 descends and separates from the second guide rope 102, thereby making way for the slider 2. After the slider 2 passes through the clearance hole 6, the lower arc-shaped guide plate 8 returns to its original position under the action of the spring 66, continuing to support the second guide rope 102.

[0043] In a further preferred embodiment, the support member 5 has a mounting groove 9 at its top, the bottom edge of the spacer 4 is located in the mounting groove 9, the top of the two side walls of the mounting groove 9 has mounting holes, a lead screw 10 passes through the two mounting holes, the lead screw 10 is located above the bottom edge, and the two ends of the lead screw 10 are threaded with locking nuts 11.

[0044] In use, place the bottom edge of the spacer 4 into the mounting groove 9, insert the lead screw 10, and use the locking nut 11 to press against the outer walls of both sides of the mounting groove 9 to achieve the installation and fixation of the support 5 on the spacer 4.

[0045] In a further optimized design, chamfers are provided at the bottom corners of the hole 61 and the corners of the second slider 203.

[0046] When in use, the chamfer can prevent sharp collisions between the slider 2 and the support 5, which helps to improve the service life of the device.

[0047] In a further preferred embodiment, two protrusions 12 are provided on each of the two side walls of the second slider 203, and the line connecting the protrusions 12 is parallel to the length direction of the second guide rope 102.

[0048] When in use, the drone's push plate is placed between the two protrusions 12, which enables stable propulsion of the sliding body 2.

[0049] In a further preferred embodiment, a first roller is provided in the first through hole and is tactilely connected to the first guide rope 101. The first rollers are evenly distributed along the circumferential direction of the first guide rope 101. A second roller is provided in the second through hole and is tactilely connected to the second guide rope 102. The second rollers are evenly distributed along the circumferential direction of the second guide rope 102.

[0050] In use, the first roller can reduce the frictional resistance between the slide body 2 and the first guide rope 101, and the second roller can reduce the frictional resistance between the slide body 2 and the second guide rope 102, thereby reducing the wear of the slide body 2, the first guide rope 101 and the second guide rope 102, which is beneficial to improving the service life of the device.

[0051] In a further preferred embodiment, the first slider 201, connecting rod 202, second slider 203, mounting rod 204, alarm component 205, and detector component 206 are detachably connected in pairs. The first slider 201 and the second slider 203 have the same structure, both including a detachably connected first half 2011 and second half 2012. The first half 2011 and the second half 2012 are provided with a semi-circular through groove on the side surface that is close to each other. The two opposite through grooves are spliced ​​together to form a first through hole or a second through hole.

[0052] The detachable connection method facilitates the disassembly and installation of the slide body 2 in this device, and also makes it easy to replace and repair the slide body 2 in sections, thus saving maintenance costs.

[0053] Therefore, the high-voltage overhead line safety distance alarm device and its usage method with the above-mentioned structure can remove the obstruction of the spacer bar 4 when the device moves on the split conductor 3, improve the convenience of the device, and facilitate the maintenance of high-voltage overhead lines.

[0054] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0055] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A safety distance alarm for high-voltage overhead lines, characterized in that: The system includes a sliding guide rail (1) and a sliding body (2). The sliding guide rail (1) includes a first guide rope (101), a second guide rope (102), and a fixing member (103). The first guide rope (101) and the second guide rope (102) are arranged vertically and are both located below the spacer bar (4) on the split conductor (3). Both ends of the first guide rope (101) and the second guide rope (102) are fixedly connected to the tower through the fixing member (103). The sliding body (2) includes a first slider (201), a connecting rod (202), a second slider (203), a mounting rod (204), an alarm element (205), and a detector element (206) connected sequentially from top to bottom. The first slider (201) has a first through hole for the first guide rope (101) to pass through, and the second slider (203) has a second through hole for the second guide rope (102) to pass through. The detector element (206) and the alarm element (205) are electrically connected.

2. The high-voltage overhead line safety distance alarm device according to claim 1, characterized in that: The fixing component (103) includes a mounting bracket (1031) fixedly connected to the tower. Two near-L-shaped support columns (1032) are fixedly connected to the mounting bracket (1031). The horizontal part of the near-L-shaped support column (1032) is fixedly connected to the mounting bracket (1031). The vertical part of the near-L-shaped support column (1032) is a threaded rod. A fixing ring (1033) is sleeved on the threaded rod. The bottom surface of the fixing ring (1033) is in contact with the horizontal part. The top surface of the fixing ring (1033) is provided with a tightening nut (1034) that is threadedly connected to the threaded rod. The ends of the first guide rope (101) and the second guide rope (102) are respectively fixedly connected to a fixing ring (1033).

3. The high-voltage overhead line safety distance alarm device according to claim 1, characterized in that: The bottom of the spacer bar (4) is detachably connected to a support member (5). The support member (5) is provided with a clearance hole (6) for the slide body (2) to pass through. The clearance hole (6) includes a first hole (61), a second hole (62), a third hole (63), and a fourth hole (64) connected sequentially from top to bottom. The first hole (61) is corresponding to the first slider (201), the second hole (62) is corresponding to the connecting rod (202), and the third hole (63) is corresponding to the second slider (203). The four holes (64) penetrate the bottom surface of the support member (5) and are corresponding to the top of the mounting rod (204). The three holes (63) are provided with support plates (65) symmetrically arranged on both sides of the four holes (64). A spring (66) is fixedly connected to the bottom surface of the support plate (65). The bottom end of the spring (66) is fixedly connected to the groove on the inner wall of the bottom surface of the three holes (63). The top surface of the support plate (65) is in contact with the second guide rope (102) under the support of the spring (66).

4. The high-voltage overhead line safety distance alarm device according to claim 3, characterized in that: The top of the inlet and outlet of the three holes (63) are fixedly connected to an upper arc-shaped guide plate (7). The height of the upper arc-shaped guide plate (7) from the ground gradually increases from the end near the three holes (63) to the end far from the three holes (63). The two ends of the support plate (65) are fixedly connected to lower arc-shaped guide plates (8). The height of the lower arc-shaped guide plate (8) from the ground gradually decreases from the end near the three holes (63) to the end far from the three holes (63).

5. The high-voltage overhead line safety distance alarm device according to claim 3, characterized in that: The support member (5) has a mounting groove (9) at its top. The bottom edge of the spacer (4) is located in the mounting groove (9). The top of the two side walls of the mounting groove (9) has mounting holes. A lead screw (10) passes through the two mounting holes. The lead screw (10) is located above the bottom edge. Locking nuts (11) are threaded to both ends of the lead screw (10).

6. The high-voltage overhead line safety distance alarm device according to claim 3, characterized in that: Both the bottom corner of the hole (61) and the corner of the second slider (203) are chamfered.

7. The high-voltage overhead line safety distance alarm device according to claim 1, characterized in that: The second slider (203) has two protrusions (12) on each of its two side walls, and the line connecting the protrusions (12) is parallel to the length direction of the second guide rope (102).

8. The high-voltage overhead line safety distance alarm device according to claim 1, characterized in that: The first through hole is provided with a first roller that is tactilely connected to the first guide rope (101), and the first roller is evenly distributed along the circumferential direction of the first guide rope (101). The second through hole is provided with a second roller that is tactilely connected to the second guide rope (102), and the second roller is evenly distributed along the circumferential direction of the second guide rope (102).

9. The high-voltage overhead line safety distance alarm device according to claim 1, characterized in that: The first slider (201), the connecting rod (202), the second slider (203), the mounting rod (204), the alarm component (205), and the detector component (206) are detachably connected to each other. The first slider (201) and the second slider (203) have the same structure, both including a detachably connected first half (2011) and a second half (2012). The first half (2011) and the second half (2012) are provided with a semi-circular through groove on the side surface that is close to each other. The two opposite through grooves are spliced ​​together to form the first through hole or the second through hole.

10. The method of using the high-voltage overhead line safety distance alarm device according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Use the fixing member (103) to fix the first guide rope (101) and the second guide rope (102) between the two towers; Step 2: Slidingly connect the slide body (2) to the first guide rope (101) and the second guide rope (102); Step 3: Use a drone or dragging tool to drag the sliding body (2) so that the sliding body (2) moves along the length direction of the first guide rope (101) and the second guide rope (102) to the top of the construction area, so that the detector (206) can detect the construction area in real time. If construction machinery appears within the set detection distance range, the detector (206) will transmit the signal to the alarm (205) and the alarm (205) will sound an alarm. After the construction machinery leaves the detection distance range, the detector (206) will transmit the signal to the alarm (205) and the alarm (205) will stop sounding the alarm.

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