Auxiliary equipment for emergency repair of overhead lines and its usage

Abstract

This invention discloses an auxiliary device for emergency repair of overhead lines and its usage method, relating to the field of overhead line emergency repair technology. In this invention, the cable is clamped by a first clamping device and a second clamping device (using multiple clamping devices). Compared to solutions that do not use clamping devices or only use a single clamping device, this further improves the problem of cable swaying. Furthermore, after the second clamping device clamps the cable, it can provide an upward traction force to the cable, improving the problem that the cable's traction force is entirely provided by the transfer terminal, leading to easy breakage at the connection point between the cable and the transfer terminal. Moreover, when the first clamping device clamps the cable, it can also provide an upward traction force to the cable, further reducing the burden on the second clamping device and the transfer terminal.

Description

Technical Field

[0001] This invention relates to the field of overhead line emergency repair technology, and in particular to an auxiliary device for overhead line emergency repair and its usage method. Background Technology

[0002] With the development of society and the economy, the stability of power supply has become crucial. Overhead transmission lines, as the backbone of the power transmission network, are susceptible to failure or temporary power outages for renovation due to their wide distribution and long distances, including severe weather (such as lightning strikes, windstorms, and icing), external damage (such as construction damage and vehicle collisions), natural aging, and municipal relocations. Timely repair and restoration of power after a failure or relocation is of paramount importance in power grid operation and maintenance.

[0003] In emergency repairs or relocations involving power outages on overhead lines, a transfer terminal is required. This terminal needs to be lifted and reliably positioned near the energized overhead line. Through a jumper connection, the power load of the faulty or relocated section is temporarily transferred to another healthy line or temporary cable circuit, thus achieving load transfer and minimizing the power outage time and area for users. In related technologies, aerial work platforms are typically used to hoist the transfer terminal. However, during the lifting process, the cable connected to the transfer terminal is prone to swaying, and since the upward traction force of the cable is entirely provided by the transfer terminal, it can easily lead to breakage at the connection point between the transfer terminal and the cable. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an auxiliary device for emergency repair of overhead lines, which can improve the problem of cable swaying when the power transfer terminal is lifted, and can also reduce the risk of breakage at the connection between the power transfer terminal and the cable.

[0005] The present invention also proposes a method for using the above-mentioned overhead line emergency repair auxiliary equipment.

[0006] According to a first aspect of the present invention, an overhead line emergency repair auxiliary device includes: a lifting device comprising a mast assembly, the mast assembly including a fixed mast, a first lifting mast movably disposed on the fixed mast, and a second lifting mast movably disposed on the first lifting mast; a terminal placement platform disposed on the second lifting mast, the terminal placement platform including a base and a support plate, the support plate being disposed on the base and used to support a power transfer terminal, the support plate having an avoidance notch; a first clamping device disposed on the first lifting mast for clamping a cable connected to the power transfer terminal, the first clamping device having a first clamping area for the cable to pass through; and a second clamping device disposed on the second lifting mast. The first clamping device has a second clamping area for the cable to pass through, and the clearance notch, the first clamping area, and the second clamping area are arranged opposite each other in the vertical direction. During the process of the lifting device driving the terminal placement platform on which the power transfer terminal is placed to rise, the second lifting mast rises before the first lifting mast, and the second clamping device clamps the cable before the first clamping device. When the cable is fixed in a vertical relative position with respect to the second clamping device, the second clamping device performs a clamping action on the cable; when the cable is fixed in a vertical relative position with respect to the first clamping device, the first clamping device performs a clamping action on the cable.

[0007] According to some embodiments of the present invention, the fixed mast, the first lifting mast, and the second lifting mast are arranged in a horizontal direction;

[0008] The mast assembly also includes a pull rope and a pull rope retraction device. One end of the pull rope is connected to the pull rope retraction device, and the pull rope is connected to the fixed mast, the first lifting mast, and the second lifting mast.

[0009] When the rope retractor retracts the rope, the rope pulls the second lifting mast to a fully extended state, and then pulls the first lifting mast to a higher state; when the rope retractor extends the rope, the first lifting mast descends to a fully retracted state, and then pulls the second lifting mast to a lower state.

[0010] According to some embodiments of the present invention, the mast assembly further includes a top mast section, which is vertically and elliptically mounted on the second lifting mast, and the terminal placement platform is mounted on the top mast section;

[0011] The fixed mast is provided with two first pulleys spaced apart along the height direction, the first lifting mast is provided with two second pulleys spaced apart along the height direction, and the second lifting mast is provided with two third pulleys spaced apart along the height direction. The pull rope passes sequentially from the pull rope retractor around the lower first pulley, the upper first pulley, the lower second pulley, the upper second pulley, the lower third pulley, and the upper third pulley, and the end of the pull rope away from the pull rope retractor is connected to the top section mast.

[0012] According to some embodiments of the present invention, the second lifting mast is a top section mast, the fixed mast is provided with two first pulleys spaced apart along the height direction, the first lifting mast is provided with two second pulleys spaced apart along the height direction, the pull rope passes sequentially around the lower first pulley, the upper first pulley, the lower second pulley, and the upper second pulley from the pull rope retractor, and the end of the pull rope away from the pull rope retractor is connected to the second lifting mast.

[0013] According to some embodiments of the present invention, the terminal placement platform further includes a fence detachably mounted on the base.

[0014] According to some embodiments of the present invention, the overhead line emergency repair auxiliary equipment further includes a mounting base, and the lifting device is disposed on the mounting base;

[0015] The overhead line emergency repair auxiliary equipment also includes a cable guide rail mounted on the mounting base, with the top end of the cable guide rail facing upwards and the bottom end of the cable guide rail facing away from the mounting base.

[0016] According to some embodiments of the present invention, the cable guide rail includes two mounting plates arranged side by side and spaced apart, with a wire passage formed between the two mounting plates. The top end of the wire passage is arranged upwards, and the bottom end of the wire passage is arranged away from the mounting base. The cable guide rail also includes a plurality of guide roller assemblies arranged at intervals along the extension direction of the wire passage.

[0017] According to some embodiments of the present invention, the guide roller assembly includes two guide rollers, both ends of which are respectively connected to two mounting plates, and the two guide rollers are spaced apart, wherein the spacing direction of the two guide rollers is perpendicular to the spacing direction of the two mounting plates, and a through gap is formed between the two guide rollers.

[0018] A method for using an overhead line emergency repair auxiliary device according to a second aspect of the present invention includes a step of lifting a power transfer terminal, wherein the step of lifting the power transfer terminal includes:

[0019] The mast assembly drives the terminal placement platform, on which the power transfer terminal is placed, to rise, wherein the second lifting mast rises before the first lifting mast.

[0020] During the process of the cable connected to the power transfer terminal rising under the drive of the mast assembly, when the cable and the second clamping device are fixed in a vertical relative position, the second clamping device performs a clamping action on the cable, and when the cable and the first clamping device are fixed in a vertical relative position, the first clamping device performs a clamping action on the cable.

[0021] According to some embodiments of the present invention, the method of using the overhead line emergency repair auxiliary equipment further includes the step of moving the power transfer terminal downwards, wherein the step of moving the power transfer terminal downwards includes:

[0022] The mast assembly drives the terminal placement platform, on which the power transfer terminal is placed, to descend, wherein the first lifting mast descends before the second lifting mast.

[0023] During the descent of the cable connected to the power transfer terminal by the mast assembly, when the first lifting mast is in the fully retracted state, the first clamping device first releases the cable, and when the second lifting mast is in the fully retracted state, the second clamping device then releases the cable.

[0024] The overhead line emergency repair auxiliary equipment and its usage method according to embodiments of the present invention have at least the following beneficial effects:

[0025] In the overhead line emergency repair auxiliary equipment and its usage method of the present invention, the cable is clamped by means of a first clamping device and a second clamping device (using multiple clamping devices). Compared with the scheme of clamping the cable without clamping devices or only using a single clamping device, the problem of cable swaying can be further improved. Furthermore, after the second clamping device clamps the cable first, the second clamping device can provide an upward traction force for the cable, which improves the problem that the connection between the cable and the transfer terminal is prone to breakage because the traction force of the cable is entirely provided by the transfer terminal. Moreover, when the first clamping device clamps the cable, the first clamping device can also provide an upward traction force for the cable, further reducing the burden on the second clamping device and the transfer terminal.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a schematic diagram illustrating the operating principle of an overhead line emergency repair auxiliary device according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the overhead line emergency repair auxiliary equipment according to an embodiment of the present invention when the power transfer terminal is not installed;

[0030] Figure 3 This is a schematic diagram of the structure of an overhead line emergency repair auxiliary equipment according to an embodiment of the present invention when a power transfer terminal has been installed;

[0031] Figure 4 This is a schematic diagram of the structure of an overhead line emergency repair auxiliary equipment after it has been raised, according to an embodiment of the present invention.

[0032] Figure 5 This is a diagram showing the fit between the cable guide rail and the cable according to one embodiment of the present invention.

[0033] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0034] Figure 7 This is a schematic diagram of the structure of a terminal placement platform according to an embodiment of the present invention;

[0035] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0036] Figure 9 This is a schematic diagram of the structure of a power transfer terminal according to an embodiment of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of a terminal placement platform loading a power transfer terminal according to an embodiment of the present invention;

[0038] Figure 11 for Figure 10 Enlarged view of point C in the middle;

[0039] Figure 12 yes Figure 4 The front view of the figure shown;

[0040] Figure 13 This is a schematic diagram of the structure of a lifting device according to an embodiment of the present invention. Figure 1 ;

[0041] Figure 14 This is a schematic diagram of the structure of a lifting device according to an embodiment of the present invention. Figure 2 ;

[0042] Figure 15 This is a schematic diagram of the structure of a lifting device according to an embodiment of the present invention. Figure 3 ;

[0043] Figure 16 This is a schematic diagram of the structure of a first clamping device according to an embodiment of the present invention;

[0044] Figure 17 This is a cross-sectional view of the first clamping device according to an embodiment of the present invention. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not 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 the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] like Figure 2 , Figure 3 As shown, an overhead line emergency repair auxiliary device provided in an embodiment of the present invention includes a lifting device 100 and a terminal placement platform 200 disposed on the lifting device 100. The lifting device 100 is used to drive the terminal placement platform 200 to lift and lower, and the terminal placement platform 200 is used to place the power supply terminal 10.

[0049] Please refer to Figures 1 to 4It is understood that the power transfer terminal 10 can be placed on the terminal placement platform 200 and then lifted by the lifting device 100. Specifically, the power transfer terminal 10 can be placed on the terminal placement platform 200 first, and then the lifting device 100 can lift the power transfer terminal 10 to approach the overhead line 40. After the power transfer terminal 10 approaches the overhead line 40, the power wires of the overhead line 40 can be connected to the power transfer terminal 10 by means of a jumper wire 50. It should be noted that the power transfer terminal 10 is connected to the cable 20, and the cable 20 is connected to the power transfer equipment, which is used to connect to the electrical equipment. In this way, with the help of the power transfer terminal 10, the cable 20, and the power transfer equipment, electricity can be transmitted to the electrical equipment across the fault section or relocation section of the overhead line 40.

[0050] like Figure 2 As shown, it should be noted that the overhead line emergency repair auxiliary equipment also includes a mounting base 400, and the lifting device 100 is mounted on the mounting base 400. The mounting base 400 is used to provide support for the lifting device 100.

[0051] The mounting base 400 can be equipped with drive wheels, allowing it to move on the ground.

[0052] Furthermore, the mounting base 400 is provided with a support leg 500, which can extend downwards and retract upwards. When the support leg 500 is in the retracted state, it will not affect the movement of the mounting base 400. When the support leg 500 is extended downwards, it can be supported on the ground to improve the stability of the equipment.

[0053] Combination Figure 3 and Figure 4 In some embodiments, the overhead line emergency repair auxiliary equipment also includes a cable guide rail 300, which is mounted on the mounting base 400 with its top end facing upwards and its bottom end facing away from the mounting base 400.

[0054] It is understandable that after the power transfer terminal 10 is placed on the terminal placement platform 200, the cable 20 connected to the power transfer terminal 10 can be passed through the cable guide rail 300. In this way, when the subsequent lifting device 100 drives the power transfer terminal 10 to lift, the cable 20 can move along the cable guide rail 300, which improves the stability of the cable 20 during the lifting process and improves the problem of large swaying amplitude of the cable 20.

[0055] Combination Figure 3 , Figure 5 and Figure 6Specifically, the cable guide rail 300 includes two mounting plates 310 arranged side by side and spaced apart, forming a wire passage between the two mounting plates 310. The top end of the wire passage faces upward and the bottom end faces away from the mounting base 400. The cable guide rail 300 also includes a plurality of guide roller assemblies 320 arranged at intervals along the extension direction of the wire passage.

[0056] Understandably, the cable 20 passes between the two mounting plates 310 and is guided by the guide roller assembly 320.

[0057] Furthermore, the guide roller assembly 320 includes two guide rollers 321, both ends of which are respectively connected to two mounting plates 310, and the two guide rollers 321 are spaced apart. The spacing direction of the two guide rollers 321 is perpendicular to the spacing direction of the two mounting plates 310, and a wire-passing gap is formed between the two guide rollers 321.

[0058] Understandably, the cable 20 is inserted between the two mounting plates 310 and into the cable passage gap of each guide roller assembly 320. The cable 20 is guided by the two guide rollers 321 of the guide roller assembly 320, and the guide rollers 321 roll in cooperation with the cable 20.

[0059] like Figure 6 As shown, further, one of the guide rollers 321 in the guide roller assembly 320 is used to provide support for the cable 20, and the other guide roller 321 is detachably connected to the two mounting plates 310, wherein the other guide roller 321 and the two mounting plates 310 can be detachably connected by a pin.

[0060] Understandably, one of the guide rollers 321 in the guide roller assembly 320 (the lower guide roller 321) supports the cable 20 and bears its weight, while the other guide roller 321 (the upper guide roller 321) cooperates to prevent the cable 20 from shifting. Before placing the cable 20 on the cable guide rail 300, the non-supporting guide roller 321 is in a detached state. At this time, the cable 20 can be placed on the supporting guide roller 321 first, and then the non-supporting guide roller 321 can be installed, thereby preventing the cable 20 from shifting.

[0061] like Figure 9 As shown, the power transfer terminal 10 includes a base plate 11 and a terminal body 12 disposed on the base plate 11. The terminal body 12 is used to connect the cable 20, and the base plate 11 is provided with a first mounting hole 13. Specifically, the first mounting hole 13 penetrates through the upper and lower sides of the base plate 11.

[0062] Combination Figure 7 and Figure 8 The terminal placement platform 200 includes a base 210 and a support plate 220. The support plate 220 is disposed on the base 210 and is used to support the power transfer terminal 10.

[0063] The support plate 220 is provided with a clearance notch 221 and a second mounting hole 222; wherein, the projection of the clearance notch 221 on the horizontal plane is located to the side of the projection of the base 210 on the horizontal plane, and the two (the projection of the clearance notch 221 on the horizontal plane and the projection of the base 210 on the horizontal plane) do not coincide.

[0064] Please refer to Figures 8 to 11 It is understandable that the specific process of placing the power transfer terminal 10 on the terminal placement platform 200 is as follows: the power transfer terminal 10 is moved from the side of the support plate 220 toward the clearance notch 221, so that the cable 20 connected to the terminal body 12 passes into the clearance notch 221, and the base plate 11 is stacked on the support plate 220, with the first mounting hole 13 and the second mounting hole 222 facing each other. Then, fasteners 30 are used to pass through the first mounting hole 13 and the second mounting hole 222, thereby fixing the support plate 220 and the base plate 11. The first mounting hole 13 and the second mounting hole 222 can be through holes, and the fasteners 30 are a set consisting of bolts and nuts. By passing the bolts through the first mounting hole 13 and the second mounting hole 222 and tightening the bolts with the nuts, the support plate 220 and the base plate 11 can be fixed.

[0065] like Figure 7 As shown, the terminal placement platform 200 further includes three support plates 220, all of which are mounted on the base 210. The three support plates 220 are used to support the three power transfer terminals 10 respectively.

[0066] With the help of the terminal placement platform 200 of the present invention, three power transfer terminals 10 can be placed, and the operation of placing the power transfer terminals 10 on the support plate 220 is simple. Specifically, during the placement of the power transfer terminals 10, the cable 20 will not interfere with the terminal placement platform 200 (an avoidance notch 221 is provided, the support plate 220 will not interfere with the cable 20, and the projection of the avoidance notch 221 on the horizontal plane does not coincide with the projection of the base 210 on the horizontal plane, so the base 210 will not interfere with the cable 20). In addition, by stacking the base plate 11 of the power transfer terminal 10 on the support plate 220 and aligning the first mounting hole 13 and the second mounting hole 222, the power transfer terminal 10 can be fixed by means of fasteners 30, which is simple to operate.

[0067] Combination Figure 7 and Figure 8The support plate 220 has a connecting portion 223 and a clearance portion 224. The connecting portion 223 is connected to the base 210, and the clearance portion 224 extends to the side of the base 210. The projection of the clearance portion 224 on the horizontal plane is located to the side of the projection of the base 210 on the horizontal plane, and the two (the projection of the clearance portion 224 on the horizontal plane and the projection of the base 210 on the horizontal plane) do not coincide. The clearance notch 221 is formed in the clearance portion 224.

[0068] Understandably, the connecting part 223 is disposed on the base 210, and the connecting part 223 is fixed to the base 210 by bolts, while the clearance part 224 extends from the side of the base 210, so that the projection of the clearance part 224 on the horizontal plane is located to the side of the projection of the base 210 on the horizontal plane and the two do not coincide. The clearance notch 221 is formed in the clearance part 224 and passes through the side of the clearance part 224 away from the connecting part 223. It should be noted that the clearance notch 221 also passes through the upper and lower sides of the clearance part 224.

[0069] It should be noted that the three support plates 220 are spaced apart on the horizontal plane, and the projections of the three support plates 220 on the horizontal plane do not overlap. It can be understood that the three support plates 220 are positioned at the edge of the base 210 and spaced apart along the circumference of the base 210, so that when the three power transfer terminals 10 are respectively placed on the three support plates 220, the installation of each power transfer terminal 10 does not interfere with each other.

[0070] like Figure 7 As shown, three support plates 220 are defined as a first support plate 220a, a second support plate 220b, and a third support plate 220c. The orientation of the clearance portion 224 of the first support plate 220a is a first direction, the orientation of the clearance portion 224 of the second support plate 220b is a second direction, and the orientation of the clearance portion 224 of the third support plate 220c is a third direction. The angle between the first and second directions is an acute angle, and the angle between the first and third directions is also an acute angle. In other words, the orientation of the clearance portion 224 of each support plate 220 is basically towards the same side. Figure 7 (Left side of the middle), so that the three power transfer terminals 10 can be placed on the three support plates 220 from left to right respectively.

[0071] Specifically, the first direction is to the left, the second direction is to the left and deviates from the first direction by a certain angle (preferably within 45°), and the second direction is to the left and also deviates from the first direction by a certain angle (preferably within 45°).

[0072] Combination Figure 3 and Figure 7It is understandable that the three cables 20 used to connect the power transfer equipment extend in basically the same direction. For ease of understanding, the power transfer equipment is located to the left of the overhead line emergency repair auxiliary equipment. The left end of each cable 20 is connected to the power transfer equipment, and the right end of each cable 20 is connected to a power transfer terminal 10. By ensuring that the clearance portion 224 of each support plate 220 is oriented basically to the left, the three power transfer terminals 10 can be placed on the three support plates 220 from left to right, making operation more convenient.

[0073] like Figure 7 As shown, further, a plane perpendicular to the first direction is defined as a reference plane, and the projection of the first support plate 220a on the reference plane is located between the projection of the second support plate 220b on the reference plane and the projection of the third support plate 220c on the reference plane.

[0074] like Figure 7 As shown, in some embodiments, the terminal placement platform 200 further includes a fence 230 disposed on the base 210. It is understood that when the power transfer terminal 10 is placed on the terminal placement platform 200, the terminal placement platform 200 is a certain distance from the ground (typically 2m-4m). Placing the power transfer terminal 10 on the support plate 220 requires an operator to climb onto the base 210 to operate it; the fence 230 ensures the safety of the operator.

[0075] Furthermore, the fence 230 is detachably connected to the base 210.

[0076] Understandably, the fence 230 is connected to the base 210 before the three power transfer terminals 10 are placed on the terminal placement platform 200. This connection provides safety for operators during the placement of the power transfer terminals 10 on the support plate 220. Once the three power transfer terminals 10 are in place, the fence 230 can be removed. It should be noted that before the fence 230 is removed, the distance between the fence 230 and the three power transfer terminals 10 is relatively short, making it easy for electricity near the terminals to strike the fence 230, posing a safety hazard. Removing the fence 230 reduces this safety risk.

[0077] Specifically, the fence 230 includes three guardrails 231, which are located on the edge of the base 210 and spaced apart around the circumference of the base 210. A clearance space 240 is formed between each two adjacent guardrails 231, which is used to avoid the power transfer terminal 10 placed on the support plate 220.

[0078] Combination Figure 4 and Figure 5 There are three cable guide rails 300, and the three cable guide rails 300 correspond to three support plates 220.

[0079] The tops of the three cable rails 300 are respectively positioned to face the clearance notches 221 of the three support plates 220.

[0080] Understandably, after placing the three power transfer terminals 10 on the three support plates 220 of the terminal placement platform 200, three cables 20 connected to the three power transfer terminals 10 can be passed through the three cable guides 300 respectively. Thus, when the lifting device 100 drives the three power transfer terminals 10 to rise and fall, the three cables 20 can move along the three cable guides 300 respectively. This improves the stability of the cables 20 during the lifting process and mitigates the problem of excessive swaying. Furthermore, in the corresponding cable guides 300 and support plates 220, the top of the cable 20 terminal is positioned towards the clearance notch 221 of the support plate 220. The cable 20 located between the cable guides 300 and the support plates 220 has better verticality, which can improve the problem of oblique pulling caused by the cable 20 exerting an oblique force on the power transfer terminal 10, thereby improving the safety of the power transfer terminal 10.

[0081] like Figure 12 As shown, in some embodiments, the lifting device 100 is a mast-type lifting device, which can drive the terminal placement platform 200 to rise and fall.

[0082] Specifically, the lifting device 100 includes a mast assembly 110, which can extend upward to lift the terminal placement platform 200, and can also retract downward to lower the terminal placement platform 200.

[0083] Combination Figure 12 and Figure 13 Specifically, in this embodiment, the lifting device 100 includes two mast assemblies 110, which are arranged horizontally at intervals. The terminal placement platform 200 is supported by both mast assemblies 110 simultaneously. The two mast assemblies 110 can simultaneously extend upwards or retract downwards, thereby raising or lowering the terminal placement platform 200. The simultaneous support of the terminal placement platform 200 by the two mast assemblies 110 provides greater stability to the terminal placement platform 200 and improves the operational safety of the staff.

[0084] Combination Figure 12 and Figure 13 The mast assembly 110 includes a fixed mast 111, a first lifting mast 112 that is liftably disposed on the fixed mast 111, and a second lifting mast 113 that is liftably disposed on the first lifting mast 112.

[0085] Specifically, the fixed mast 111 is fixedly mounted on the mounting base 400; the first lifting mast 112 is mounted on the fixed mast 111 and can be raised and lowered relative to the fixed mast 111; the second lifting mast 113 is mounted on the first lifting mast 112 and can be raised and lowered relative to the first lifting mast 112; and the terminal placement platform 200 is mounted on the second lifting mast 113.

[0086] It should be noted that one or more lifting masts may be set between the first lifting mast 112 and the fixed mast 111, one or more lifting masts may also be set between the second lifting mast 113 and the first lifting mast 112, and one or more lifting masts may also be set between the terminal placement platform 200 and the second lifting mast 113.

[0087] A first clamping device 600 is disposed on the first lifting mast 112 and is used to clamp the cable 20 connected to the power transfer terminal 10; a second clamping device 700 is disposed on the second lifting mast 113 and is also used to clamp the cable 20. It should be noted that the number of the first clamping devices 600 and the second clamping devices 700 corresponds to the number of support plates 220. Specifically, in this embodiment, there are three support plates 220, and also three first clamping devices 600 and two clamping devices 700; among the corresponding support plates 220, first clamping devices 600, and second clamping devices 700, the support plates 220 are used to support the power transfer terminal 10, and the first clamping devices 600 and second clamping devices 700 are used to clamp the cable connected to the power transfer terminal 10. In other embodiments, there is one support plate 220, and also one first clamping device 600 and one second clamping device 700.

[0088] It should be noted that the first clamping device 600 and the second clamping device 700 can be electric clamping devices, which can automatically clamp or release the cable 20 under controlled conditions.

[0089] During the process of the lifting device 100 driving the terminal placement platform 200 on which the power transfer terminal 10 is placed to rise, the second lifting mast 113 rises before the first lifting mast 112. Specifically, when the mast assembly 110 drives the terminal placement platform 200 to rise, not all the lifting masts rise together, but each lifting mast rises in sequence. Among them, the second lifting mast 113 rises (extends upward) before the first lifting mast 112.

[0090] Furthermore, during the process of the lifting device 100 driving the terminal placement platform 200 on which the power transfer terminal 10 is placed to rise, the second clamping device 700 clamps the cable 20 before the first clamping device 600. When the cable 20 is fixed in the vertical relative position with respect to the second clamping device 700 (when the vertical relative position of the cable 20 with respect to the second clamping device 700 is no longer affected by the extension of the mast assembly 110), the second clamping device 700 performs the clamping action on the cable 20. When the cable 20 is fixed in the vertical relative position with respect to the first clamping device 600 (when the vertical relative position of the cable 20 with respect to the first clamping device 600 is no longer affected by the extension of the mast assembly 110), the first clamping device 600 performs the clamping action on the cable 20.

[0091] Understandably, since not all lifting masts rise together when the mast assembly 110 drives the terminal placement platform 200 to rise, but rather each lifting mast rises sequentially, the cable 20 will not move relative to the second lifting mast 113 in the vertical direction for a certain period of time, but will move relative to the first lifting mast 112 in the vertical direction. If the first clamping device 600 and the second clamping device 700 clamp the cable 20 simultaneously in the initial stage of the mast assembly 110 driving the terminal placement platform 200 to rise, then when the mast assembly 110 extends, the cable 20 will be pulled by the first clamping device 600 and the second clamping device 700, which may cause it to break. In this application, since the second lifting mast 113 rises before the first lifting mast 112 during the process of the lifting device 100 driving the terminal placement platform 200 on which the power transfer terminal 10 is placed, when the cable 20 rises, the second lifting mast 113 will remain relatively stationary with the cable 20 in the vertical direction before the first lifting mast 112. Therefore, by having the second clamping device 700 clamp the cable 20 before the first clamping device 600, and by having the second clamping device 700 perform the clamping action on the cable 20 when the relative position of the cable 20 with respect to the second clamping device 700 in the vertical direction is no longer affected by the extension of the mast assembly 110, and by having the first clamping device 600 perform the clamping action on the cable 20 when the relative position of the cable 20 with respect to the first clamping device 600 in the vertical direction is no longer affected by the extension of the mast assembly 110, the problem of multiple clamping devices simultaneously clamping the cable 20 and causing the cable 20 to break due to pulling can be prevented.

[0092] It should be emphasized that in this application, by using the first clamping device 600 and the second clamping device 700 (using multiple clamping devices) to clamp the cable 20, compared with the solution of not using clamping devices or only using a single clamping device to clamp the cable 20, the problem of cable 20 shaking can be further improved. Furthermore, after the second clamping device 700 clamps the cable 20 first, the second clamping device 700 can provide an upward traction force for the cable 20, which improves the problem that the connection between the cable 20 and the power transfer terminal 10 is prone to breakage because the traction force of the cable 20 is entirely provided by the power transfer terminal 10. Moreover, when the first clamping device 600 clamps the cable 20, the first clamping device 600 can also provide an upward traction force for the cable 20, further reducing the burden on the second clamping device 700 and the power transfer terminal 10. Furthermore, because the lifting masts in the mast assembly 110 rise sequentially rather than synchronously, it makes it possible to use the first clamping device 600 and the second clamping device 700 (using multiple clamping devices) to clamp the cable 20. If the lifting masts rise synchronously, during the upward unfolding of the mast assembly 110, except for the top mast 114 (the lifting mast that can rise to its highest point and is directly connected to the terminal placement platform 200), the other lifting masts maintain relative motion with the cable 20 in the vertical direction. The remaining lifting masts cannot be equipped with corresponding clamping devices to clamp the cable 20 and provide traction for its ascent.

[0093] In addition, during the process of the lifting device 100 driving the terminal placement platform 200 on which the power transfer terminal 10 is placed to descend, the first lifting mast 112 descends before the second lifting mast 113, and the first clamping device 600 releases the cable 20 before the second clamping device 700.

[0094] Understandably, during the process of the lifting device 100 driving the terminal placement platform 200 on which the power transfer terminal 10 is placed to descend, the first lifting mast 112 descends before the second lifting mast 113. When the first lifting mast 112 is in the fully retracted state, the first clamping device 600 can release the cable 20 first to avoid the problem that the first clamping device 600 cannot hold the cable 20 and cause the cable 20 to descend smoothly. At this time, the second clamping device 700 still holds the cable 20 and provides traction force for the cable 20, which improves the problem that the connection between the cable 20 and the power transfer terminal 10 is prone to breakage because the traction force of the cable 20 is entirely provided by the power transfer terminal 10. When the second lifting mast 113 is in the fully retracted state, the second clamping device 700 can release the cable 20 again.

[0095] like Figures 13 to 15As shown, in some embodiments, the fixed mast 111, the first lifting mast 112, and the second lifting mast 113 are arranged in a horizontal direction. The mast assembly 110 also includes a pull rope 116 and a pull rope retractor 115. One end of the pull rope 116 is connected to the pull rope retractor 115, and the pull rope 116 is connected to the fixed mast 111, the first lifting mast 112, and the second lifting mast 113.

[0096] When the rope retractor 115 retracts the rope 116, the rope 116 pulls the second lifting mast 113 to its fully extended state, and then pulls the first lifting mast 112 to its fully extended state. It should be noted that when the second lifting mast 113 is fully extended upwards, it can be locked by a locking device to prevent it from falling. Similarly, when the first lifting mast 112 is fully extended upwards, it can be locked by another locking device to prevent it from falling. When the rope retractor 115 extends the rope 116, the locking device used to lock the first lifting mast 112 unlocks first. After the first lifting mast 112 descends to its fully retracted state due to gravity, the locking device used to lock the second lifting mast 113 unlocks, and the second lifting mast 113 descends to its fully retracted state due to gravity.

[0097] It should be noted that the locking device can utilize various existing locking devices. For example, regarding the locking device for locking the second lifting mast 113, a retractable electric push rod can be provided at the bottom of the second lifting mast 113, and a corresponding lock hole can be provided at the top of the lifting mast adjacent to and following the second lifting mast 113. When the second lifting mast 113 is fully extended, the electric push rod can be inserted into the lock hole to lock the second lifting mast 113. It is understood that the locking devices on other lifting masts can also be set with reference to the above-described locking device for locking the second lifting mast 113, and will not be described in detail here.

[0098] The rope retractor 115 can be a retractor wheel device that can rotate forward or backward. When the retractor wheel device rotates forward, it can retract the rope 116. When the retractor wheel device rotates backward, the lifting mast descends due to gravity and pulls out the rope 116 on the retractor wheel device.

[0099] Specifically, the mast assembly 110 also includes a top mast 114. The fixed mast 111 is provided with two first pulleys 1111 spaced apart along the height direction. The first lifting mast 112 is provided with two second pulleys 1121 spaced apart along the height direction. The second lifting mast 113 is provided with two third pulleys 1131 spaced apart along the height direction. The pull rope 116 is provided by the pull rope retractor 115 and passes sequentially around the lower first pulley 1111, the upper first pulley 1111, the lower second pulley 1121, the upper second pulley 1121, the lower third pulley 1131, and the upper third pulley 1131. The end of the pull rope 116 away from the pull rope retractor 115 is connected to the bottom of the top mast 114. Thus, when the rope retractor 115 winds up the rope 116, the rope 116 will first pull the top mast 114 to its fully extended state, then pull the second lifting mast 113 to its fully extended state, and then pull the first lifting mast 112 to its fully extended state. It should be noted that when the top mast 114 is fully extended upwards, it can be locked by a locking device to prevent it from falling. When the second lifting mast 113 is fully extended upwards, it can be locked by a locking device to prevent it from falling. When the first lifting mast 112 is fully extended upwards, it can be locked by another locking device to prevent it from falling. When the rope retractor 115 extends the rope 116, the locking device for locking the first lifting mast 112 is unlocked first, and the first lifting mast 112 descends to the fully retracted state. Then, the locking device for locking the second lifting mast 113 is unlocked again, and the second lifting mast 113 descends to the fully retracted state. After that, the locking device for locking the top mast 114 is unlocked again, and the top mast 114 descends to the fully retracted state.

[0100] In other embodiments, the second lifting mast 113 is a top section mast, the fixed mast 111 is provided with two first pulleys 1111 spaced apart along the height direction, the first lifting mast 112 is provided with two second pulleys 1121 spaced apart along the height direction, the pull rope 116 is provided by the pull rope retractor 115 and passes sequentially around the lower first pulley 1111, the upper first pulley 1111, the lower second pulley 1121, and the upper second pulley 1121, and the end of the pull rope 116 away from the pull rope retractor 115 is connected to the bottom of the second lifting mast 113. Thus, when the rope retractor 115 retracts the rope 116, the rope 116 first pulls the second lifting mast 113 to its fully extended state, and then pulls the first lifting mast 112 to its fully extended state. It should be noted that when the second lifting mast 113 is fully extended upwards, it can be locked by a locking device to prevent it from falling. Similarly, when the first lifting mast 112 is fully extended upwards, it can be locked by another locking device to prevent it from falling. When the rope retractor 115 extends the rope 116, the locking device used to lock the first lifting mast 112 unlocks first. After the first lifting mast 112 descends to its fully retracted state due to gravity, the locking device used to lock the second lifting mast 113 unlocks, and the second lifting mast 113 then descends to its fully retracted state due to gravity.

[0101] Combination Figure 16 and Figure 17 In some embodiments, the first clamping device 600 and the second clamping device 700 have the same structure, both including a housing 610, a movable clamping block 630 disposed in the housing 610, a linear drive member 640 drivenly connected to the movable clamping block 630, and a fixed clamping block 620 disposed in the housing 610. The movable clamping block 630 and the fixed clamping block 620 are disposed opposite to each other, and the linear drive member 640 is used to drive the movable clamping block 630 closer to or further away from the fixed clamping block 620. The linear drive member 640 may be an electric push rod.

[0102] Understandably, when the linear drive 640 drives the moving clamp 630 to approach the fixed clamp 620, it can clamp the cable 20 located between the moving clamp 630 and the fixed clamp 620. When the linear drive 640 drives the moving clamp 630 away from the fixed clamp 620, it can release the cable 20 located between the moving clamp 630 and the fixed clamp 620.

[0103] It should be noted that the first clamping device 600 has a first clamping area (the area between the movable clamping block 630 and the fixed clamping block 620 of the first clamping device 600) through which the cable 20 passes, and the second clamping device 700 has a second clamping area (the area between the movable clamping block and the fixed clamping block of the second clamping device 700) through which the cable 20 passes. In the corresponding support plate 220, the first clamping device 600, and the second clamping device 700, the clearance notch 221, the first clamping area, and the second clamping area are arranged opposite each other in the vertical direction. Thus, the cable 20 located between the cable guide rail 300 and the support plate 220 can extend in a vertical state.

[0104] Furthermore, the fixed clamp 620 is detachably connected to the housing 610. After the power transfer terminal 10 is installed on the terminal placement platform 200, the fixed clamp 620 can be removed first so that the cable 20 fits against the movable clamp 630. Then the fixed clamp 620 is installed on the housing 610 so that the cable 20 is placed between the fixed clamp 620 and the movable clamp 630.

[0105] The fixing block 620 can be detachably connected to the housing 610 by means of a pin, screw or clip.

[0106] It should be noted that the mast assembly 110, the first clamping device 600, and the second clamping device 700 can be connected to a controller, which controls the operation of the mast assembly 110, the first clamping device 600, and the second clamping device 700. Specifically, the rope retractor 115 and the linear drive 640 of the first clamping device 600 and the second clamping device 700 are all electrically connected to the controller.

[0107] An embodiment of the present invention also provides a method for using an auxiliary device for emergency repair of overhead lines, which includes the following steps:

[0108] S100, the power transfer terminal 10 is placed on the terminal placement platform 200.

[0109] Understandably, when municipal relocation or overhead line failure necessitates power diversion, the overhead line emergency repair auxiliary equipment is transported to a suitable location at the point where power diversion is required and placed stably. Then, the outriggers 500 are extended downwards and supported against the ground to ensure the equipment is stable and reliable during use. Next, each power diversion terminal 10 is placed on the terminal placement platform 200. After that, the cable 20 is threaded into the first clamping area of ​​the first clamping device 600, the second clamping area of ​​the second clamping device 700, and the cable passage of the cable guide rail 300. Finally, the fence 230 is removed.

[0110] S200, lifts the power transfer terminal 10.

[0111] like Figures 13 to 15As shown, specifically, the mast assembly 110 drives the terminal placement platform 200, on which the power transfer terminal 10 is placed, to rise. More specifically, each lifting mast extends upward in sequence, and the second lifting mast 113 rises before the first lifting mast 112. Furthermore, during the lifting of the power transfer terminal 10, the cable 20 connected to the power transfer terminal 10 is also driven upward by the mast assembly 110. During this process, when the cable 20 and the second clamping device 700 are fixed in a vertical relative position (when the vertical relative position of the cable 20 and the second clamping device 700 is no longer affected by the extension of the mast assembly 110), the second clamping device 700 performs a clamping action on the cable 20; and when the cable 20 and the first clamping device 600 are fixed in a vertical relative position (when the vertical relative position of the cable 20 and the first clamping device 600 is no longer affected by the extension of the mast assembly 110), the first clamping device 600 performs a clamping action on the cable 20.

[0112] It is understandable that during the lifting of the power transfer terminal 10, once the top mast 114 is fully extended upwards, the vertical relative position of the cable 20 and the second lifting mast 113 will not change, regardless of which subsequent lifting mast extends upwards. Similarly, the vertical relative position of the cable 20 and the second clamping device 700 mounted on the second lifting mast 113 will also remain unchanged. At this time, the second clamping device 700 clamps the cable 20. Likewise, it is understandable that during the lifting of the power transfer terminal 10, once the first lifting mast 112 is fully extended upwards before the second lifting mast 113, the vertical relative position of the cable 20 and the first lifting mast 112 will not change, regardless of which subsequent lifting mast extends upwards. The vertical relative position of the cable 20 and the first clamping device 600 mounted on the first lifting mast 112 will also remain unchanged. At this time, the first clamping device 600 clamps the cable 20.

[0113] It should be noted that the first sensor can be configured to detect the specific position of the top mast 114. When the first sensor detects that the top mast 114 is fully extended upwards, the first sensor sends data to the controller, which then controls the second clamping device 700 to perform a clamping action on the cable 20. Alternatively, the second sensor can be configured to detect the specific position of the first lifting mast 112 near the preceding lifting mast 113. When the second sensor detects that the first lifting mast 112 is near the preceding lifting mast 113 and is fully extended upwards, the second sensor sends data to the controller, which then controls the first clamping device 600 to perform a clamping action on the cable 20.

[0114] S300, use jumper 50 to connect the wires of overhead line 40 to power transfer terminal 10.

[0115] Specifically, after the terminal placement platform 200 is raised to a suitable position, the jumper 50 is used to divert the current from the overhead line 40 at the high position to the power transfer terminal 10, and then through the cable 20 connected to the power transfer terminal 10 to the power transfer equipment on the ground, and then the power transfer equipment crosses the fault section or relocation section to transfer the current to the power consumption equipment.

[0116] S400, remove jumper 50.

[0117] Specifically, jumper 50 will be removed after the project is completed.

[0118] S500, move the power transfer terminal 10 down.

[0119] Specifically, the lifting device 100 lowers the terminal placement platform 200. More specifically, each lifting mast retracts downwards sequentially, with the first lifting mast 112 descending before the second lifting mast 113. In other words, the order in which the mast assembly 110 retracts downwards when lowering the terminal placement platform 200 is the opposite of the order in which the mast assembly 110 extends upwards when raising the terminal placement platform 200. During the descent of the terminal placement platform 200 by the lifting device 100, when the first lifting mast 112 is fully retracted, the first clamping device 600 releases the cable 20 first; when the second lifting mast 113 is fully retracted, the second clamping device 700 releases the cable 20 then.

[0120] S600, remove cable 20 terminal from terminal placement platform 200.

[0121] Specifically, the fence 230 can be reinstalled on the base 210 first, the cable 20 can be removed from the first clamping device 600, the second clamping device 700 and the cable guide rail 300, and each power transfer terminal 10 can be removed at the same time. After that, the support leg 500 can be retracted upwards.

[0122] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0123] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An auxiliary device for emergency repair of overhead power lines, characterized in that, include: A lifting device includes a mast assembly, the mast assembly including a fixed mast, a first lifting mast movably disposed on the fixed mast, and a second lifting mast movably disposed on the first lifting mast; A terminal placement platform is set on the second lifting mast. The terminal placement platform includes a base and a support plate. The support plate is set on the base and is used to support the power transfer terminal. The support plate is provided with an avoidance notch. A first clamping device is disposed on the first lifting mast for clamping a cable connected to the power transfer terminal. The first clamping device has a first clamping area through which the cable passes. A second clamping device is disposed on the second lifting mast for clamping the cable. The second clamping device has a second clamping area through which the cable passes. The clearance notch, the first clamping area, and the second clamping area are arranged opposite each other in the vertical direction. During the process of the lifting device driving the terminal placement platform on which the power transfer terminal is placed to rise, the second lifting mast rises before the first lifting mast, and the second clamping device clamps the cable before the first clamping device. When the cable is fixed in a vertical position relative to the second clamping device, the second clamping device performs the clamping action on the cable. When the cable is fixed in a vertical position relative to the first clamping device, the first clamping device performs the clamping action on the cable.

2. The overhead line emergency repair auxiliary equipment according to claim 1, characterized in that, The fixed mast, the first lifting mast, and the second lifting mast are arranged in a horizontal direction; The mast assembly also includes a pull rope and a pull rope retraction device. One end of the pull rope is connected to the pull rope retraction device, and the pull rope is connected to the fixed mast, the first lifting mast, and the second lifting mast. When the rope retractor retracts the rope, the rope pulls the second lifting mast to a fully extended state, and then pulls the first lifting mast to a higher state; when the rope retractor extends the rope, the first lifting mast descends to a fully retracted state, and then pulls the second lifting mast to a lower state.

3. The overhead line emergency repair auxiliary equipment according to claim 2, characterized in that, The mast assembly also includes a top mast section, which is vertically and elliptically mounted on the second lifting mast, and the terminal placement platform is mounted on the top mast section. The fixed mast is provided with two first pulleys spaced apart along the height direction, the first lifting mast is provided with two second pulleys spaced apart along the height direction, and the second lifting mast is provided with two third pulleys spaced apart along the height direction. The pull rope passes sequentially from the pull rope retractor around the lower first pulley, the upper first pulley, the lower second pulley, the upper second pulley, the lower third pulley, and the upper third pulley, and the end of the pull rope away from the pull rope retractor is connected to the top section mast.

4. The overhead line emergency repair auxiliary equipment according to claim 2, characterized in that, The second lifting mast is a top section mast. The fixed mast is provided with two first pulleys spaced apart along the height direction. The first lifting mast is provided with two second pulleys spaced apart along the height direction. The pull rope passes sequentially around the lower first pulley, the upper first pulley, the lower second pulley, and the upper second pulley from the pull rope retractor. The end of the pull rope away from the pull rope retractor is connected to the second lifting mast.

5. The overhead line emergency repair auxiliary equipment according to claim 1, characterized in that, The terminal placement platform also includes a fence that can be detachably mounted on the base.

6. The overhead line emergency repair auxiliary equipment according to claim 1, characterized in that, It also includes a mounting base, on which the lifting device is mounted; The overhead line emergency repair auxiliary equipment also includes a cable guide rail mounted on the mounting base, with the top end of the cable guide rail facing upwards and the bottom end of the cable guide rail facing away from the mounting base.

7. The overhead line emergency repair auxiliary equipment according to claim 6, characterized in that, The cable guide rail includes two mounting plates arranged side by side and spaced apart, with a wire passage formed between the two mounting plates. The top end of the wire passage faces upward and the bottom end faces away from the mounting base. The cable guide rail also includes a plurality of guide roller assemblies spaced apart along the extension direction of the cable passage.

8. The overhead line emergency repair auxiliary equipment according to claim 7, characterized in that, The guide roller assembly includes two guide rollers, both ends of which are respectively connected to the two mounting plates, and the two guide rollers are spaced apart. The spacing direction of the two guide rollers is perpendicular to the spacing direction of the two mounting plates, and a through gap is formed between the two guide rollers.

9. A method of using the overhead line emergency repair auxiliary equipment according to any one of claims 1 to 8, characterized in that, The step includes lifting the power transfer terminal, which includes: The mast assembly drives the terminal placement platform, on which the power transfer terminal is placed, to rise, wherein the second lifting mast rises before the first lifting mast. During the process of the cable connected to the power transfer terminal rising under the drive of the mast assembly, when the cable and the second clamping device are fixed in a vertical relative position, the second clamping device performs a clamping action on the cable, and when the cable and the first clamping device are fixed in a vertical relative position, the first clamping device performs a clamping action on the cable.

10. The method of using the overhead line emergency repair auxiliary equipment according to claim 9, characterized in that, It also includes the step of moving the power transfer terminal downwards, the step of moving the power transfer terminal downwards including: The mast assembly drives the terminal placement platform, on which the power transfer terminal is placed, to descend, wherein the first lifting mast descends before the second lifting mast. During the descent of the cable connected to the power transfer terminal by the mast assembly, when the first lifting mast is in the fully retracted state, the first clamping device first releases the cable, and when the second lifting mast is in the fully retracted state, the second clamping device then releases the cable.

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