Convenient take-up and pay-off device and using method thereof

Abstract

The invention discloses a convenient take-up and pay-off device and a using method thereof.The convenient take-up and pay-off device comprises a fixing frame and a wire winding roller, the wire winding roller is arranged on the fixing frame, a connecting wire is wound around the wire winding roller, a fixing mechanism is arranged on the fixing frame, and the connecting wire is wound around the fixing mechanism. The device comprises a supporting frame, adjusting seats, movable rods, a fixing plate, a fixing seat and first springs, the supporting frame is of a rectangular frame structure, the two adjusting seats are symmetrically arranged on the supporting frame, the movable rods are arranged above the adjusting seats, the fixing plate is arranged above the movable rods, the fixing seats are fixedly installed at the upper end of the fixing plate, and the first springs are arranged on the fixing plate. The device moves up and down through the movable rod, so that a wire head of a grounding wire is fixed and protected, the safety problem caused by abrasion of an insulating layer or exposure of a wire core is avoided, and the device is applied to various electric power scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction and maintenance, and in particular to a convenient wire-retracting and -releasing device and a method for using the same. Background Art

[0002] In the field of electrical and electronic equipment, a ground wire guide mainly refers to a retractable device used to guide or pull the ground wire across obstacles or long distances during auxiliary installation or maintenance. These tools are usually designed to improve construction efficiency, reduce labor intensity, and ensure the accuracy and safety of ground wire installation.

[0003] However, the existing wire guides lack a way to fix the wire ends. In order to prevent the wire ends from hanging on the ground, workers usually use ropes to tie the wire ends to the wire rollers of the wire guides. This fixing method is simple, and the binding ropes are low in strength and easy to lose. If the wire ends are not fixed, during transportation, the surface of the wire ends may be easily dragged on the ground, causing the insulation layer to wear, and the wire core may even be exposed, which may lead to the risk of breakage or short circuit.

[0004] In order to ensure that the ground wire can be used more efficiently during power maintenance and power line construction, a ground wire guide is usually used to retract the ground wire. Relevant staff have also made some inventions. After searching, the Chinese invention patent with the highest similarity is 202311314246.1, which proposes a portable ground wire quick retraction device for a ground rod, including a fuselage, a lower end surface of the fuselage is symmetrically mounted with a clip, and the symmetrical clips are jointly clamped on the ground rod, and a winding mechanism for quickly curling the ground wire is rotatably mounted on the fuselage. Workers can quickly curl the grounding wire by simply turning the handle, which greatly reduces the time of retracting and releasing the grounding wire, and can prevent workers from directly touching the grounding wire, avoiding the hidden danger of discharge of the grounding wire to workers due to improper operation, and the body can be directly mounted on the grounding rod for easy carrying by workers, so that workers can act quickly and operate accurately in emergency situations, and distribute the wires evenly on the wire-winding roller by moving back and forth at a constant speed, thereby avoiding the problem of wire entanglement, so that workers do not need extra time to untangle the tangled wires, and evenly distribute the tension on the grounding wire to ensure the integrity and normal use of the grounding wire. The above patent mainly solves the problem of entanglement during the use of the grounding wire, and does not explain the protection of the wire head part of the grounding wire, and cannot solve the risk of the insulation layer being worn due to the surface of the grounding wire head being dragged on the ground, or the wire core being exposed, thereby causing breakage or short circuit. Summary of the invention

[0005] In order to overcome the above-mentioned problems, the object of the present invention is to provide a convenient wire-retracting and paying-out device and a method of using the same, wherein the convenient wire-retracting and paying-out device moves up and down by setting a movable rod, so that the wire end of the grounding wire is under the action of a pressing plate, thereby protecting it and avoiding safety problems caused by wear of the insulation layer or exposure of the wire core. The overall structure of the device is simple and convenient for actual use on site.

[0006] The technical solution adopted by the present invention is: a convenient wire-reeling and reeling device, comprising a fixed frame and a wire coiling roller, wherein the wire coiling roller is arranged on the fixed frame, and a connecting wire is wound around the wire coiling roller, wherein the connecting wire is a conducting wire, a grounding wire or a guide rope;

[0007] The fixing frame is provided with a fixing mechanism;

[0008] The fixing mechanism includes a support frame, an adjustment seat, a movable rod, a fixing plate, a fixing seat, and a first spring.

[0009] The support frame is a rectangular frame structure with hole-shaped structures at both ends, which are sleeved on the fixed frame. There are two groups of adjustment seats, which are symmetrically arranged on the support frame. The movable rod is arranged above the adjustment seat, and the fixed plate is arranged above the movable rod. The fixed seat is fixedly installed on the upper end of the fixed plate. A plurality of pressing plates are equidistantly arranged on the upper end of the fixed seat, and the pressing plates are made of rubber material. The first spring is arranged at the lower end of the movable rod.

[0010] As a further description of the technical solution, a cavity is opened inside the adjustment seat, the first spring is fixedly installed in the cavity, and a positioning rod is fixedly installed in the cavity, and the lower end of the movable rod is opened with a guide groove for movable insertion with the positioning rod.

[0011] As a further description of the technical solution, the first spring is sleeved on the outside of the positioning rod.

[0012] As a further description of the technical solution, a reset button is provided on one side of the adjustment seat, and both ends of the reset button are fixedly connected with ear plates.

[0013] As a further description of the technical solution, a groove is provided on one side of the movable rod close to the reset button, and second springs are symmetrically arranged in the groove. An extrusion block is slidably connected to the groove, and two second springs are respectively connected to the ends of the extrusion block.

[0014] As a further description of the technical solution, a handle is sleeved on the upper end of the fixing frame, and an operating handle is designed on the outer side of the winding roller or connected to a driving motor.

[0015] The method for performing power maintenance using a convenient wire-retracting and paying-out device comprises the following steps:

[0016] Step 1: Preparation: Make sure all electrical equipment is turned off and disconnected from the power supply, and prepare the necessary tools and materials. The grounding wire is located on the wire coiling roller of the convenient wire-reeling and wire-releasing device;

[0017] Step 2: Check the distribution box, open it and confirm the position of the grounding terminal;

[0018] Step 3: Install the ground rod;

[0019] Step 4: Connect the ground wire, turn the operating handle on the retractable wire device, connect one end of the ground wire on it to the ground rod, cut the ground wire according to the required length, and connect the other end of the ground wire to the ground terminal in the distribution box;

[0020] Step 5: Test the ground resistance;

[0021] Step 6: Install the indoor grounding wire to ensure that each electrical circuit has a ground wire;

[0022] Step 7: Inspect and test.

[0023] The method for erecting a power line using a convenient wire-retracting and -releasing device comprises the following steps:

[0024] S01: Make preparations before laying power lines.

[0025] Including line assessment and span construction, tensioning site layout, and line-laying pulley suspension;

[0026] S02: Use the retractable wire device to deploy the traction rope, and deploy it manually in sections. In sections with poor deployment conditions or complex lines, use drones to deploy it.

[0027] S03: Use the wire-retracting and -releasing device in conjunction with the traction machine and the tension machine to lay out the conductor and ground wire;

[0028] S04: Tightening of conductor and ground wire;

[0029] S05: Balanced hanging line;

[0030] S06: Quality inspection and judging whether abnormal conditions occur;

[0031] S07: If there is an abnormal situation, handle the abnormality until it meets the requirements.

[0032] Fill in the corresponding construction records if there is no abnormal situation;

[0033] S08: Complete the installation of power lines.

[0034] As a further description of the technical solution, the line assessment and span construction in step S01 are specifically as follows:

[0035] Evaluate the lines where the transmission lines are to be installed, and erect crossing frames in areas that need to be crossed.

[0036] The area to be crossed includes the area across power lines, railway areas, highway areas, and river areas.

[0037] When the crossover angle between the line to be constructed and the crossing object is greater than 30°, a crossing frame should be erected as a whole.

[0038] When the diagonal span angle of the crossing frame is less than 30°, the crossing frames are set up in different phases, with the ground wire and the side phase sharing one, and the middle phase using a separate one.

[0039] As a further description of the technical solution, the specific calculation process of the length, width and height of the spanning frame is as follows:

[0040] The actual length L of the spanning frame is:

[0041]

[0042] Among them, l represents the distance between the two side lines, F represents the wind deviation distance of the construction line conductor and the ground wire at the crossing point under the installation meteorological conditions, and θ represents the angle between the line and the object being crossed;

[0043] The width W of the spanning frame is:

[0044] W=W1+2(X1+X2)

[0045] Where W1 represents the width of the area to be crossed, X1 represents the minimum horizontal distance between the object to be crossed and the object to be crossed, and X2 represents the wind deviation distance of the line to be crossed;

[0046] The height H of the spanning frame is:

[0047] H=H1+H2+H3

[0048] Among them, H1 represents the height of the object being crossed, H2 represents the minimum safe distance between the crossing frame and the object being crossed, and H3 represents the height margin.

[0049] Beneficial effects of the present invention:

[0050] The present invention discloses a convenient wire-winding and -releasing device. The wire-winding roller is rotated by rotating an operating handle on the side of the wire-winding roller or by a driving motor, so that the wire ends of the connecting wires wound on the wire-winding roller are rotated to a position close to a pressing plate. The movable rod can move up and down in an adjusting seat. The upper and lower positions of the movable rod are adjusted by a reset button to squeeze the connecting wire ends on the wire-winding roller, thereby avoiding the wire ends from being dragged on the ground and causing the insulation layer to wear, or the wire core to be exposed and cause a break or short circuit. The overall structure of the wire-winding and -releasing device is simple, and the device is convenient and practical.

[0051] The present invention discloses a convenient wire-retracting and releasing device, wherein the support frame is a rectangular frame structure, and the two ends of the support frame are hole-shaped structures, which are sleeved on the fixing frame. The support frame not only fixes the adjusting seat but also improves the fixing strength of the fixing frame. The pressing plate, the fixing seat and the fixing plate are integrated, and the pressing plate is arranged in a state of being arranged equidistantly. The whole pressing plate is made of rubber material, and will not cause damage to the connecting wires thereon after contact. The pressing plate is arranged in the form of equidistant arrangement, and the friction force is increased by the gap, so as to improve the stability of the contact with the wire ends of the connecting wires, thereby ensuring that the related work using the wire-retracting and releasing device is stably and smoothly completed.

[0052] The present invention discloses a convenient wire-winding and -releasing device. The device can be manufactured in different specifications according to actual usage scenarios. When used for indoor power maintenance, a handle is sleeved on the upper end of the fixed frame, and an operating handle is designed on the outer side of the wire winding roller. The handle is designed to facilitate carrying and use. The rotation of the wire winding roller is controlled by the operating handle, and the overall operation is simple. When used for power line installation, a driving motor is used on the outer side of the wire winding roller to drive the rotation of the wire winding roller, so as to complete the installation of conductors and grounding wires during the construction of related power lines, freeing the hands of operators and improving work efficiency.

[0053] The present invention discloses a method for performing power maintenance using a convenient wire-retracting and -unreeling device. The method clarifies the steps of performing power maintenance using the wire-retracting and -unreeling device, making it convenient for operators to use the device to complete maintenance of equipment inside a substation, thereby improving the efficiency of power maintenance work.

[0054] The present invention discloses a method for erecting power lines using a convenient wire-retracting and -releasing device. The method specifies relevant steps in the process of erecting the power lines, and in particular specifies a method for calculating the length, width and height of a spanning frame to ensure a safe erection height of the power lines. The convenient wire-retracting and -releasing device is applied to the actual erection process to avoid wear on the ends of the conductors and grounding wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a convenient wire-reeling and wire-releasing device proposed by the present invention;

[0056] Figure 2 This is a schematic diagram of the installation position structure of an adjustment seat of a convenient wire-retracting and -releasing device proposed by the present invention on a fixed frame;

[0057] Figure 3 A convenient wire-reeling device proposed by the present invention Figure 2 A schematic diagram of the enlarged local structure at center A;

[0058] Figure 4This is a structural schematic diagram of a cross-section of a movable rod of a fixing mechanism of a convenient wire-reeling and wire-winding device proposed by the present invention;

[0059] Figure 5 This is a structural schematic diagram of a cross-section of an adjustment seat of a convenient type of fixing mechanism for a wire-reeling and wire-winding device proposed by the present invention;

[0060] Figure 6 A schematic diagram of the structure of a movable rod of a convenient wire-reeling and wire-releasing device proposed by the present invention;

[0061] Figure 7 A schematic diagram of the reset button structure of a convenient wire-reeling and wire-winding device proposed by the present invention;

[0062] Figure 8 A schematic diagram of a handle structure of a convenient wire-reeling and wire-reeling device proposed by the present invention;

[0063] Fig. 9 A flow chart of a method for performing power maintenance using a convenient wire-retracting and -releasing device proposed by the present invention;

[0064] Fig.10 The present invention provides a flow chart of a method for laying power lines using a convenient wire-retracting and -releasing device.

[0065] Description of Reference Numerals

[0066] 1-Fixed bracket,

[0067] 2-coil roller, 21-connecting wire,

[0068] 3-fixing mechanism, 31-support frame, 32-adjusting seat, 321-positioning rod, 33-movable rod, 331-guide groove, 34-fixing plate, 35-fixing seat, 36-first spring, 37-pressing plate,

[0069] 4-reset button, 41-ear plate,

[0070] 5- Second spring,

[0071] 6- Extrusion block,

[0072] 7- Grip,

[0073] 8-Operating handle. DETAILED DESCRIPTION

[0074] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0075] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0076] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0077] like Figures 1 to 10 As shown, it shows a specific embodiment of the present invention:

[0078] Embodiment 1

[0079] The present invention discloses a convenient wire-reeling and winding device, comprising a fixed frame 1 and a wire coiling roller 2, wherein the wire coiling roller 2 is arranged on the fixed frame 1, and a connecting wire 21 is wound around the wire coiling roller 2, wherein the connecting wire 21 is a conducting wire, a grounding wire or a guide rope;

[0080] The fixing frame 1 is provided with a fixing mechanism 3;

[0081] The fixing mechanism 3 includes a support frame 31, an adjustment seat 32, a movable rod 33, a fixing plate 34, a fixing seat 35, and a first spring 36.

[0082] The support frame 31 is a rectangular frame structure with hole-like structures at both ends, which is sleeved on the fixed frame 1. The adjustment seat 32 has two groups, which are symmetrically arranged on the support frame 31. The movable rod 33 is arranged above the adjustment seat 32, and the fixed plate 34 is arranged above the movable rod 33. The fixed seat 35 is fixedly installed on the upper end of the fixed plate 34. A plurality of pressing plates 37 are equidistantly arranged on the upper end of the fixed seat 35. The pressing plates 37 are made of rubber material. The first spring 36 is arranged at the lower end of the movable rod 33.

[0083] In this embodiment, if Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the fixing frame 1 is used to provide support force for the wire winding roller 2. When a conductor, a grounding wire or a guide rope is arranged on the wire winding roller 2, it is used for the installation of power transmission lines or power maintenance sites. The fixing mechanism 3 is used to fix the wire ends of the connecting wires 21 on the wire winding roller 2 to avoid the wire end surface of the connecting wire 31 being dragged on the ground, causing the insulation layer to wear, or the wire core to be exposed, thereby causing safety problems such as breakage or short circuit, thereby ensuring the operational safety during the power maintenance process. At the same time, the overall structure of the wire retracting and releasing device is simple, convenient and practical.

[0084] In this embodiment, the support frame 31 is a rectangular frame structure with hole-like structures at both ends, which is sleeved on the fixing frame 1. The design of this structure increases the stability of the bottom structure of the entire fixing frame 1 and improves the fixing strength of the fixing frame 1. At the same time, the support frame 31 plays a role in fixing and installing the adjustment seat 32. The pressing plate 37, the fixing seat 35 and the fixing plate 34 are designed as an integrated structure to ensure the stability of the structure of the fixing mechanism 3. The pressing plate 37 is set to a plurality of equidistantly arranged states. The whole is made of rubber material and will not cause damage to the connecting wires thereon after contact. It is arranged in an equidistant manner to increase friction through gaps, thereby improving the stability of contact with the wire ends of the connecting wires 21 and ensuring that the related work using the wire-retracting and releasing device is completed stably and smoothly.

[0085] Specifically, a cavity is defined inside the adjustment seat 32 , the first spring 36 is fixedly installed in the cavity, a positioning rod 321 is fixedly installed in the cavity, and a guide groove 331 for movably interlacing with the positioning rod 321 is defined at the lower end of the movable rod 33 .

[0086] Specifically, the first spring 36 is sleeved on the outside of the positioning rod 321 .

[0087] Specifically, a reset button 4 is disposed on one side of the adjustment seat 32 , and both ends of the reset button 4 are fixedly connected with ear plates 41 .

[0088] In this embodiment, if Figure 6 , Figure 7As shown, the cavity in the adjusting seat 32 is used for the sliding of the movable rod 33, which plays a role of guiding the up and down movement. At the same time, the guide groove 331 provided in the movable rod 33 is used for the up and down movement of the positioning rod 321, which also plays a role of guiding the up and down movement. One end of the first spring 36 is fixedly connected to the bottom end position of the cavity inside the adjusting seat 32, and the other end is fixedly connected to the bottom end position of the movable rod 33 in the cavity. At the same time, the first spring 36 is sleeved on the positioning rod 321. When the movable rod 33 does not move, the first spring 36 is in a compressed state, and its position is fixed by the limit of the reset button 4. When the movable rod 33 needs to be moved upward, the reset button 4 is pressed. Under the action of the elastic force of the first spring 36, the movable rod 33 is subjected to an upward thrust to achieve upward movement, so that the pressing plate 37 contacts the connecting line 21, so as to fix the end of the connecting line 21, thereby avoiding the problem caused by the connecting line 21 dragging on the ground. The reset button 4 is slidably connected to the adjusting seat 32, and the reset button 4 is prevented from being separated from the adjusting seat 32 by the design of the ear plate 41.

[0089] Specifically, a groove is formed on one side of the movable rod 33 close to the reset button 4 , and second springs 5 ​​are symmetrically arranged in the groove. An extrusion block 6 is slidably connected to the groove, and two second springs 5 ​​are respectively connected to the ends of the extrusion block 5 .

[0090] In this embodiment, if Figure 6 , Figure 7 As shown, the two second springs 5 ​​are respectively fixedly connected to the ends of the extrusion block 6, and the second spring 5 applies a thrust to the extrusion block 6. When the movable rod 33 is pushed into the adjusting seat 32 and the extrusion block 6 and the reset button 4 are at the same horizontal height, the second spring 5 will apply an outward thrust to the extrusion block 6 through the elastic force of the second spring 5. At this time, the extrusion block 6 will push the reset button 4 outward. After being pushed out, the movable rod 33 can be positioned and the height of the movable rod 33 can be adjusted. The reset button 4 and the groove can be set to multiple adjustment gradients according to actual needs for graded adjustment to meet the use requirements of connecting lines of different diameters and are widely used.

[0091] When the use of the relevant connecting wire 21 is completed and the end of the connecting wire 21 needs to be fixed, it is necessary to push the reset buttons 4 on the two adjustment seats 32 inward at the same time to release the limit. When pushing inward, the thrust applied to the reset button 4 will be transmitted to the extrusion block 6, and the extrusion block 6 applies a force in the opposite direction to the elastic force to the second spring 5. The second spring 5 undergoes elastic deformation to drive the extrusion block 6 to move inward from the groove to release the limit. Then, the height of the movable rod 33 is adjusted to fix the end of the connecting wire 21, and the limit is re-performed at the appropriate groove and the reset button 4 to achieve the fixation of the end of the connecting wire 21 and avoid damage.

[0092] In general, in this embodiment, the specific use process is: when in use, the staff will move the fixed frame 1 to the designated position to lay the relevant connecting line 21. After the laying of the connecting line 21 is completed, the wire coiling roller 2 is manually rotated so that the wire end is directly below, and the reset buttons 4 on the two adjustment seats 32 are manually pushed inward, so that the reset button 4 pushes the extrusion block 6 into the groove of the movable rod 33 under the action of the thrust. When there is no restriction between the extrusion block 6 and the reset button 4, the first spring 36 pushes the movable rod 33 upward, and the movable rod 33 is guided upward by the positioning rod 321. At this time, the pressing plate 37 is lifted by the movable rod 33 to be close to the wire end and fixes the wire end. At this time, when the fixed frame 1 is transported at the end of the operation, the wire end can be prevented from being worn due to not being fixed.

[0093] Embodiment 2

[0094] Specifically, a handle 7 is sleeved on the upper end of the fixing frame 1, and an operating handle 8 is designed on the outer side of the winding roller 2 or connected to a driving motor.

[0095] On the basis of the above-mentioned embodiment 1, according to different actual usage scenarios, the device can be manufactured in different specifications according to the actual usage scenarios.

[0096] When used for indoor power maintenance, a handle 7 is provided on the upper end of the fixed frame 1, and an operating handle 8 is designed on the outer side of the wire winding roller 2. The handle 2 is designed to be easy to carry and use. The rotation of the wire winding roller 2 is controlled by the operating handle 8. The overall operation is simple and convenient to use. The winding and releasing process of the grounding wire is realized by rotating the operating handle 8 in different directions on the wire winding roller 2.

[0097] The wire retracting and releasing device is used for maintenance in the power room to ensure the neatness of the grounding wire during use, making it convenient for operators to use it at any time and improving work efficiency.

[0098] When used for laying power lines, a driving motor is used on the outer side of the winding roller 2 to drive the rotation of the winding roller 2, so as to complete the laying of conductors and grounding wires during the construction of relevant power lines, freeing the hands of operators and improving work efficiency.

[0099] Embodiment 3

[0100] The method for performing power maintenance using a convenient wire-retracting and paying-out device comprises the following steps:

[0101] Step 1: Preparation: Make sure all electrical equipment is turned off and disconnected from the power supply, and prepare the necessary tools and materials. The grounding wire is located on the wire coiling roller of the convenient wire-reeling and wire-releasing device;

[0102] Step 2: Check the distribution box, open it and confirm the position of the grounding terminal;

[0103] Step 3: Install the ground rod;

[0104] Step 4: Connect the ground wire, turn the operating handle on the retractable wire device, connect one end of the ground wire on it to the ground rod, cut the ground wire according to the required length, and connect the other end of the ground wire to the ground terminal in the distribution box;

[0105] Step 5: Test the ground resistance;

[0106] Step 6: Install the indoor grounding wire to ensure that each electrical circuit has a ground wire;

[0107] Step 7: Inspect and test.

[0108] In this embodiment, if Fig. 9 As shown, the method clarifies the steps of using the wire-retracting and -releasing device for power maintenance, making it convenient for operators to use the device to complete the maintenance of internal equipment of the substation and improve the efficiency of power maintenance work.

[0109] The specific process is:

[0110] Step 1: Preparation: Make sure all electrical equipment is turned off and disconnected from the power supply. Prepare the necessary tools and materials. The grounding wire is placed on the wire reel of the convenient wire-reeling device. The tools include screwdrivers, pliers, insulating tape, grounding wire (usually copper or aluminum insulated wire), grounding terminal, grounding rod (such as galvanized steel pipe or angle iron), etc.

[0111] Step 2: Check the distribution box, open the distribution box and confirm the location of the grounding terminal (usually a green terminal or a terminal with a grounding symbol); if there is no grounding terminal in the distribution box, you can install one.

[0112] Step 3: Install the ground rod; if there is no existing grounding system, you need to install the ground rod outdoors. Choose a moist soil area and drive a galvanized steel pipe or angle iron vertically into the ground at least 2 meters deep. If the soil is dry, you can wet it around the ground rod to reduce the grounding resistance.

[0113] Step 4: Connect the ground wire. Use appropriate wire (such as copper or aluminum insulated wire) to connect the ground rod to the ground terminal in the distribution box. Make sure the connection is firm. You can use screws to tighten it and apply conductive paste to the connection to improve conductivity. If the distance between the ground rod and the distribution box is far, you may need to use an underground cable duct to protect the wire.

[0114] Step 5: Test the ground resistance; use a ground resistance tester to measure the resistance value of the ground system. Ideally, the ground resistance should be less than 1 ohm.

[0115] Step 6: Install the indoor grounding wire to ensure that each electrical circuit has a ground wire;

[0116] Step 7: Check and test, after installation is complete, check again that all connections are secure and there are no exposed wires. Restore power and use a voltage tester to check that the ground wire is properly grounded.

[0117] In this embodiment, power maintenance is the main daily work of power workers. Grounding wires must be used in all work scenarios to ensure the safety of workers and avoid the occurrence of safety accidents. The wire retracting and releasing device is used to retract and release the grounding wire. The operation is simple and easy to use, which can greatly improve the work efficiency of power maintenance work. The use of this method can clarify the work steps and facilitate the operation.

[0118] Embodiment 4

[0119] The method for erecting a power line using a convenient wire-retracting and -releasing device comprises the following steps:

[0120] S01: Make preparations before laying power lines.

[0121] Including line assessment and span construction, tensioning site layout, and line-laying pulley suspension;

[0122] S02: Use the retractable wire device to deploy the traction rope, and deploy it manually in sections. In sections with poor deployment conditions or complex lines, use drones to deploy it.

[0123] S03: Use the wire-retracting and -releasing device in conjunction with the traction machine and the tension machine to lay out the conductor and ground wire;

[0124] S04: Tightening of conductor and ground wire;

[0125] S05: Balanced hanging line;

[0126] S06: Quality inspection and judging whether abnormal conditions occur;

[0127] S07: If there is an abnormal situation, handle the abnormality until it meets the requirements.

[0128] Fill in the corresponding construction records if there is no abnormal situation;

[0129] S08: Complete the installation of power lines.

[0130] Specifically, the line assessment and span construction in step S01 are as follows:

[0131] Evaluate the lines where the transmission lines are to be installed, and erect crossing frames in areas that need to be crossed.

[0132] The area to be crossed includes the area across power lines, railway areas, highway areas, and river areas.

[0133] When the crossover angle between the line to be constructed and the crossing object is greater than 30°, a crossing frame should be erected as a whole.

[0134] When the diagonal span angle of the crossing frame is less than 30°, the crossing frames are set up in different phases, with the ground wire and the side phase sharing one, and the middle phase using a separate one.

[0135] Specifically, the length, width and height of the spanning frame are calculated as follows:

[0136] The actual length L of the spanning frame is:

[0137]

[0138] Among them, l represents the distance between the two side lines, F represents the wind deviation distance of the construction line conductor and the ground wire at the crossing point under the installation meteorological conditions, and θ represents the angle between the line and the object being crossed;

[0139] The width W of the spanning frame is:

[0140] W=W1+2(X1+X2)

[0141] Where W1 represents the width of the area to be crossed, X1 represents the minimum horizontal distance between the object to be crossed and the object to be crossed, and X2 represents the wind deviation distance of the line to be crossed;

[0142] The height H of the spanning frame is:

[0143] H=H1+H2+H3

[0144] Among them, H1 represents the height of the object being crossed, H2 represents the minimum safe distance between the crossing frame and the object being crossed, and H3 represents the height margin.

[0145] In this embodiment, if Fig.10 As shown, the method specifies the relevant steps in the process of power line installation, especially the calculation method of the length, width and height of the span frame is also clearly specified to ensure the safe installation height of the power line. The convenient wire retracting and releasing device is applied to the actual installation process to avoid wear of the wire ends of the conductors and grounding wires.

[0146] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0147] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A convenient wire-reeling and -releasing device, comprising a fixed frame (1) and a wire coiling roller (2), wherein the wire coiling roller (2) is arranged on the fixed frame (1), a connecting wire (21) is wound around the wire coiling roller (2), and the connecting wire (21) is a conducting wire, a grounding wire or a guide rope; Features: The fixing frame (1) is provided with a fixing mechanism (3). The fixing mechanism (3) comprises a support frame (31), an adjustment seat (32), a movable rod (33), a fixing plate (34), a fixing seat (35), and a first spring (36). The support frame (31) is a rectangular frame structure, and its two ends are hole-shaped structures, which are sleeved on the fixed frame (1). The adjustment seat (32) has two groups, which are symmetrically arranged on the support frame (31). The movable rod (33) is arranged above the adjustment seat (32), and the fixed plate (34) is arranged above the movable rod (33). The fixed seat (35) is fixedly installed on the upper end of the fixed plate (34). A plurality of pressing plates (37) are equidistantly arranged on the upper end of the fixed seat (35), and the pressing plates (37) are made of rubber material. The first spring (36) is arranged at the lower end of the movable rod (33).

2. A convenient wire-reeling and reeling device according to claim 1, characterized in that: The adjusting seat (32) has a cavity formed inside, the first spring (36) is fixedly mounted in the cavity, a positioning rod (321) is fixedly mounted in the cavity, and a guide groove (331) for movably interlacing with the positioning rod (321) is formed at the lower end of the movable rod (33).

3. A convenient wire-reeling and reeling device according to claim 2, characterized in that: The first spring (36) is sleeved on the outside of the positioning rod (321).

4. A convenient wire-reeling and reeling device according to claim 1, characterized in that: A reset button (4) is provided on one side of the adjustment seat (32), and both ends of the reset button (4) are fixedly connected with ear plates (41).

5. A convenient wire-reeling and reeling device according to claim 4, characterized in that: A groove is provided on one side of the movable rod (33) close to the reset button (4), and second springs (5) are symmetrically arranged in the groove. An extrusion block (6) is slidably connected to the groove, and two second springs (5) are respectively connected to the ends of the extrusion block (5).

6. A convenient wire-reeling and reeling device according to claim 1, characterized in that: The upper end of the fixing frame (1) is sleeved with a handle (7), and the outer side of the winding roller (2) is designed with an operating handle (8) or connected to a driving motor.

7. A method for performing power maintenance using the portable wire-retracting and unretracting device described in claims 1 to 5, characterized in that: The following steps are involved: Step 1: Preparation: Make sure all electrical equipment is turned off and disconnected from the power supply, and prepare the necessary tools and materials. The grounding wire is located on the wire coiling roller of the convenient wire-reeling and wire-releasing device; Step 2: Check the distribution box, open it and confirm the position of the grounding terminal; Step 3: Install the ground rod; Step 4: Connect the ground wire, turn the operating handle on the retractable wire device, connect one end of the ground wire on it to the ground rod, cut the ground wire according to the required length, and connect the other end of the ground wire to the ground terminal in the distribution box; Step 5: Test the ground resistance; Step 6: Install the indoor grounding wire to ensure that each electrical circuit has a ground wire; Step 7: Inspect and test.

8. A method for laying power lines using the portable wire-retracting and unretracting device described in claims 1 to 5, characterized in that: The following steps are involved: S01: Make preparations before laying power lines. Including line assessment and span construction, tensioning site layout, and line-laying pulley suspension; S02: Use the retractable wire device to deploy the traction rope, and deploy it manually in sections. In sections with poor deployment conditions or complex lines, use drones to deploy it. S03: Use the wire-retracting and -releasing device in conjunction with the traction machine and the tension machine to lay out the conductor and ground wire; S04: Tightening of conductor and ground wire; S05: Balanced hanging line; S06: Quality inspection and judging whether abnormal conditions occur; S07: If there is an abnormal situation, handle the abnormality until it meets the requirements. Fill in the corresponding construction records if there is no abnormal situation; S08: Complete the installation of power lines.

9. A method for laying power lines using the portable wire-retracting and -releasing device as claimed in claim 8, characterized in that: The line assessment and span construction in step S01 are specifically as follows: Evaluate the lines where the transmission lines are to be installed, and erect crossing frames in areas that need to be crossed. The area to be crossed includes the area across power lines, railway areas, highway areas, and river areas. When the crossover angle between the line to be constructed and the crossing object is greater than 30°, a crossing frame should be erected as a whole. When the diagonal span angle of the crossing frame is less than 30°, the crossing frames are set up in different phases, with the ground wire and the side phase sharing one, and the middle phase using a separate one.

10. A method for laying power lines using the portable wire-retracting and -releasing device as claimed in claim 9, characterized in that: The specific calculation process of the length, width and height of the spanning frame is as follows: The actual length L of the spanning frame is: Among them, l represents the distance between the two side lines, F represents the wind deviation distance of the construction line conductor and the ground wire at the crossing point under the installation meteorological conditions, and θ represents the angle between the line and the object being crossed; The width W of the spanning frame is: W=W1+2(X1+X2) Where W1 represents the width of the area to be crossed, X1 represents the minimum horizontal distance between the object to be crossed and the object to be crossed, and X2 represents the wind deviation distance of the line to be crossed; The height H of the spanning frame is: H=H1+H2+H3 Among them, H1 represents the height of the object being crossed, H2 represents the minimum safe distance between the crossing frame and the object being crossed, and H3 represents the height margin.

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