Helicopter sling device and method for lifting interphase spacer rods using helicopter sling method

Abstract

The present invention provides a helicopter sling device and a method for lifting interphase spacers using a helicopter sling method, which relate to the technical field of power transmission line inspection and maintenance. The helicopter sling device includes a sling assembly, a hook assembly, a plurality of first lock card assemblies, and a second lock card assemblies. The sling assembly is fixedly connected to the belly of the helicopter. The hook assembly is located below the sling assembly and is hung in connection with the sling assembly. A plurality of first lock card assemblies are hung in sequence below the hook assembly from top to bottom. Each first lock card assembly includes a first lock card and a first rope loop. The first rope loop is located below the first lock card and is hung in connection with the first lock card. The second lock card assembly includes a second lock card, a third lock card, and a second rope loop connected in series. The second lock card is hung in the first rope loop located at the bottom. The second rope loop and the first rope loop located at the bottom are both used to suspend interphase spacers. The helicopter sling device and the method for lifting interphase spacers using a helicopter sling method can use a helicopter to lift interphase spacers.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line inspection and maintenance, in particular to a helicopter sling device for power transmission line operation and maintenance and a method for lifting interphase spacer bars using a helicopter sling method. Background Art

[0002] As the number of transmission lines continues to grow, the number of operations and maintenance tasks required is also increasing. Furthermore, more and more lines are being built in mountainous areas and over water, making these areas difficult for personnel and vehicles to reach. This is especially true when bulky and heavy maintenance materials are required. Transportation is difficult, construction takes a long time, and even short power outages are difficult to complete, posing a significant safety hazard to power transmission. For example, during transmission line maintenance, interphase spacers are often installed to prevent them from swaying. In mountainous areas, where roads are unavailable, winches and cableways are the only options. Over water, kayaks are the only option. However, due to the length of interphase spacers, which are generally over 10 meters long and sometimes even as long as 10 or more meters, traditional transportation methods are difficult to complete in these special terrains.

[0003] In response to the above situation, attempts were made to use helicopters to carry out large-scale power outage maintenance operations for transmission lines. However, since the length of phase spacers is generally more than 10 meters, it is difficult to transport them by helicopter.

[0004] In view of this, the inventor, based on many years of production design experience in this field and related fields, has designed a helicopter sling device and a method for lifting phase spacer bars by helicopter sling method after repeated experiments, in order to solve the problems existing in the prior art. Summary of the Invention

[0005] The object of the present invention is to provide a helicopter sling device and a method for lifting interphase spacers by using a helicopter sling method, which can utilize a helicopter to lift the interphase spacers and quickly hang them on a transmission line.

[0006] To achieve the above-mentioned objectives, the present invention proposes a helicopter sling device, wherein the helicopter sling device includes a sling assembly, a hook assembly, a plurality of first locking card assemblies and a second locking card assembly, the sling assembly is fixedly connected to the belly of the helicopter, the hook assembly is located below the sling assembly and is hung in connection with the sling assembly, a plurality of first locking card assemblies are hung in sequence below the hook assembly from top to bottom, each of the first locking card assemblies includes a first locking card and a first rope loop, the first rope loop is located below the first locking card and is hung in connection with the first locking card, the second locking card assembly includes a second locking card, a third locking card and a second rope loop connected in series in sequence, the second locking card is hung on the first rope loop located at the bottom, and the second rope loop and the first rope loop located at the bottom are both used to hang interphase spacer rods.

[0007] The helicopter sling device as described above, wherein the first lock card, the second lock card and the first lock card are all D-type locks.

[0008] In the helicopter sling device as described above, the inner diameter of the third locking card is larger than the inner diameters of the second locking card and the third locking card.

[0009] The helicopter sling device as described above, wherein the lengths of the plurality of first rope loops increase sequentially from top to bottom.

[0010] The helicopter sling device as described above, wherein the helicopter sling device includes three first locking card assemblies connected in series.

[0011] As described above, the helicopter sling device, wherein the sling assembly includes a belly main hook, a first closed ring, a fourth locking card and an insulating rope connected in sequence from top to bottom, and the belly main hook is fixedly connected to the belly of the helicopter.

[0012] As described above, the helicopter sling device, wherein the sling assembly further includes a belly auxiliary hook, a second closed ring, and a secondary rope of a fifth locking card connected in sequence, the belly auxiliary hook is fixedly connected to the belly of the helicopter and is spaced apart from the belly main hook, one end of the secondary rope is connected to the fifth locking card, and the other end of the secondary rope is connected to the fourth locking card.

[0013] As described above, the helicopter sling device, wherein the hook assembly includes a first shackle, a rotating hook, and a second shackle connected in sequence from top to bottom, the first shackle is hung and connected to the insulating rope, and the second shackle is hung and connected to the first lock card located at the top.

[0014] The present invention further provides a method for lifting interphase spacers using a helicopter sling method, using the helicopter sling device described above, wherein the method for lifting interphase spacers using the helicopter sling method includes:

[0015] Step 1: Use helicopter to lift the online workers to the working location;

[0016] Step 2: The helicopter returns to the material yard, and at least one interphase spacer is hung on the helicopter sling device, wherein one end of each interphase spacer is provided with a lifting ring, and the second rope loop and the first rope loop located at the bottom are respectively hung and connected to the lifting ring;

[0017] Step 3: The helicopter reaches the operating position and hovers at a first predetermined height. The operator unlocks the second lock and hangs the third lock on the lower sub-conductor.

[0018] Step 4: the helicopter descends to a second predetermined height and hovers, the gravity of the interphase spacer rods is transferred to the second rope loop, and each of the first locking assemblies is in a relaxed state;

[0019] Step 5: unlock any one of the first locks to separate the interphase spacer from the helicopter.

[0020] In the above-mentioned method for lifting interphase spacers using a helicopter sling method, in step 2, a guide rope is provided at the other end of the interphase spacer.

[0021] Compared with the prior art, the present invention has the following characteristics and advantages:

[0022] The present invention proposes a helicopter sling device and a method for lifting interphase spacer bars by a helicopter sling method. The first locking card assembly and the second locking card assembly are respectively connected to the interphase spacer bars. During helicopter transportation, the first locking card assembly is used to bear the gravity of the interphase spacer bars. When the interphase spacer bars are lifted to the operating position, the second locking card assembly is used to bear the gravity of the interphase spacer bars, so that the first locking card assembly can be smoothly disengaged, thereby realizing the smooth separation of the interphase spacer bars and the helicopter. This not only improves the transportation and unloading efficiency of the interphase spacer bars, but also ensures the safety of the transportation operation.

[0023] In the helicopter sling device and the method for lifting interphase spacer bars by helicopter sling method proposed in the present invention, multiple connection points are formed through multiple first locking card assemblies. The online workers can disengage any connection point by unlocking any first locking card, thereby separating the interphase spacer bars from the helicopter. This solves the problem of the online workers having difficulty in unhooking due to the up and down floating of the helicopter due to factors such as wind when it is hovering. At the same time, it also reduces the hovering time of the helicopter and ensures the safety of the operation.

[0024] The helicopter sling device and the method for lifting phase spacer bars by helicopter sling proposed in the present invention solve the problem of accurately lifting phase spacer bars by helicopter, thereby greatly improving the work efficiency of transporting phase spacer bars; making it possible to use helicopters to carry out large-scale power outage maintenance operations for transmission lines, and also filling the technical gap in carrying out line maintenance operations on water by helicopters. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0026] Figure 1It is a structural schematic diagram of the helicopter sling device of the present invention;

[0027] Figure 2 Schematic diagram of the structure of the sling assembly in the present invention;

[0028] Figure 3 This is a schematic diagram of the interphase spacer being hung behind the lower layer sub-conductor in the present invention;

[0029] Figure 4 It is a schematic diagram of the hook assembly and the first locking assembly when the helicopter flies away after successful lifting in the present invention.

[0030] Description of reference numerals:

[0031] 100. Helicopter sling device; 10. Sling assembly;

[0032] 11. Main hook on the belly; 12. First closing ring;

[0033] 13. Fourth lock card; 14. Insulated rope;

[0034] 15. Auxiliary hook on the belly; 16. Second closed ring;

[0035] 17. Fifth lock; 18. Secondary rope;

[0036] 20. Hook assembly; 21. First shackle;

[0037] 22. Rotating hook; 23. Second shackle;

[0038] 30. First lock card assembly; 31. First lock card;

[0039] 32. First rope loop; 40. Second locking assembly;

[0040] 41. Second lock card; 42. Third lock card;

[0041] 43. Second rope loop; 200. Interphase spacer;

[0042] 210, lifting ring; 220, guide rope;

[0043] 300. Lower sub-conductor. DETAILED DESCRIPTION

[0044] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and are not to be construed as limiting the present invention in any way. Based on the teachings of the present invention, a skilled person can conceive of any possible variations based on the present invention, and such variations should be considered to fall within the scope of the present invention.

[0045] like Figures 1 to 4 As shown, the present invention proposes a helicopter sling device 100, which includes a sling assembly 10, a hook assembly 20, a plurality of first lock card assemblies 30 and a second lock card assembly 40. The sling assembly 10 is fixedly connected to the belly of the helicopter, the hook assembly 20 is hung at the lower end of the sling assembly 10, and a plurality of first lock card assemblies 30 are hung on the lower end of the hook assembly 20 from top to bottom. Each first lock card assembly 30 includes a first lock card 31 and a first rope loop 32 hung on the first lock card 31. The second lock card assembly 40 includes a second lock card 41, a third lock card 42 and a second rope loop 43 connected in series in sequence. The second lock card 41 is hung on the first rope loop 32 at the bottom. The second rope loop 43 and the first rope loop 32 at the bottom are both used to hang the phase spacer.

[0046] The present invention further provides a method for lifting interphase spacers using a helicopter sling method, wherein the interphase spacers 200 are lifted using the helicopter sling device 100 as described above. The method for lifting interphase spacers using the helicopter sling method includes:

[0047] Step 1: Use helicopter to lift the online workers to the working location;

[0048] Step 2: The helicopter returns to the material yard and uses the helicopter sling device 100 to suspend at least one interphase spacer 200. One end of the interphase spacer 200 is provided with a lifting ring 210, and the lifting ring 210 is connected to the second rope loop 43 and the first rope loop 32 at the bottom;

[0049] Step 3: The helicopter reaches the operating position and hovers at a first predetermined height. The operator unlocks the second locking clip 41, separating the second locking clip 41 from the third locking clip 42, and then hangs the third locking clip 42 on the lower sub-conductor 300.

[0050] Step 4: The helicopter descends to a second predetermined height and hovers, at which time the second rope loop 43 is in a stressed state and the first rope loops 32 are in a relaxed state;

[0051] Step 5: unlock any one of the first locks 31 to separate the interphase spacer 200 from the helicopter.

[0052] The present invention proposes a helicopter sling device 100 and a method for lifting interphase spacer bars by a helicopter sling method. The first locking card assembly 30 and the second locking card assembly are respectively connected to the interphase spacer bars 200. During helicopter transportation, the first locking card assembly 30 is used to bear the gravity of the interphase spacer bars 200. When the interphase spacer bars 200 are lifted to the operating position, the second locking card assembly 40 is used to bear the gravity of the interphase spacer bars 200, so that the first locking card assembly 30 can be smoothly disengaged, thereby achieving smooth separation of the interphase spacer bars 200 and the helicopter. This not only improves the transportation and unloading efficiency of the interphase spacer bars 200, but also ensures the safety of the transportation operation.

[0053] In the helicopter sling device 100 and the method for lifting interphase spacer bars by helicopter sling method proposed in the present invention, multiple connection points are formed through multiple first locking card assemblies 30. The online operator can disengage any connection point by unlocking any first locking card 31, thereby separating the interphase spacer bar 200 from the helicopter. This solves the problem of the online operator having difficulty in unhooking the helicopter due to the up and down floating caused by factors such as wind when the helicopter is hovering. At the same time, it also reduces the hovering time of the helicopter and ensures the safety of the operation.

[0054] The helicopter sling device 100 and the method for lifting interphase spacer bars by using a helicopter sling proposed in the present invention solve the problem of accurately lifting interphase spacer bars 200 by using a helicopter, thereby greatly improving the efficiency of transporting interphase spacer bars. They make it possible to carry out large-scale power outage maintenance operations of transmission lines by using helicopters, and also fill the technical gap in carrying out line maintenance operations on water by helicopters.

[0055] The helicopter sling device 100 and the method for lifting interphase spacer bars by using a helicopter sling method proposed in the present invention can be used for large-scale helicopter maintenance operations on power transmission lines, and enable helicopter line maintenance operations to have all-terrain operation capabilities.

[0056] In an optional embodiment of the present invention, the first locking card 31 , the second locking card 41 and the third locking card 42 are all D-type locks to facilitate connection and removal with the first rope loop 32 or the second rope loop 43 .

[0057] Furthermore, the inner diameter of the third locking clip 42 is larger than the inner diameters of the second locking clip 41 and the first locking clip 31. With this structure, the length of the second locking clip assembly 40 is greater than the length of the first locking clip assembly 30. When the first locking clip assembly 30 is bearing the weight of the interphase spacer 200 (before the force is transferred), the second rope loop 43 is in a relaxed state, making it easier for operators to hang the second locking clip 41 on the transmission line (the lower sub-conductor 300).

[0058] In an optional embodiment of the present invention, the lengths of the multiple first rope loops 32 increase in sequence from top to bottom, so that the distances between the connection points increase in sequence from top to bottom, making it easier for the operator to select a suitable connection point for operation.

[0059] In an optional example of the present invention, the helicopter sling device 100 includes three first locking card assemblies 30. The three first locking card assemblies 30 are sequentially connected in series from top to bottom, and the first rope loop 32 is suspended and connected to the first locking card 31 below it.

[0060] In an optional example, in order from top to bottom, the three first rope loops 32 are respectively a 1m×1T rope loop (folded in half for use), a 1m×1T rope loop, and a 2m×1T rope loop.

[0061] In an optional embodiment of the present invention, a sling assembly 10 comprises a belly hook 11, a first closing ring 12, a fourth locking clip 13, and an insulating rope 14, sequentially connected from top to bottom. The belly hook 11 is fixedly attached to the belly of the helicopter. The sling assembly 10 is used not only for hoisting and transporting the interphase spacers 200 but also for hoisting a worker in step 1. The worker is suspended from the bottom of the insulating rope 14 using a D-lock.

[0062] In an optional example of this embodiment, the sling assembly 10 further includes a belly auxiliary hook 15, a second closed loop 16, a fifth locking clip 17, and a secondary rope 18. The belly auxiliary hook 15 is fixedly connected to the belly of the helicopter and is spaced apart from the belly main hook 11. One end of the secondary rope 18 is connected to the fifth locking clip 17, and the other end of the secondary rope 18 is connected to the fourth locking clip 13. The secondary rope 18 is connected to the fourth locking clip 13 to further ensure the safety of lifting and transportation.

[0063] In an optional example of this embodiment, the hook assembly 20 includes a first shackle 21, a rotating hook 22, and a second shackle 23, connected sequentially from top to bottom. The first shackle 21 is hung and connected to the insulating rope 14, and the second shackle 23 is hung and connected to the first locking clip 31. During the lifting process, when the interphase spacer 200 rotates, the rotating hook 22 also rotates, preventing the insulating rope 14, the first rope loops 32, and the second rope loops 43 from twisting and damaging, thereby resolving the problem of the interphase spacer 200 rotating during lifting.

[0064] In an optional example of the present invention, a guide rope 220 is provided at the other end of the interphase spacer 200. When the helicopter hovers and the interphase spacer 200 is in position, the on-line operator can guide the interphase spacer 200 into the predetermined position through the guide rope 220.

[0065] In an optional example of the present invention, the lifting ring 210 at one end of the phase spacer 200 is a hardware ring.

[0066] In an optional example of the present invention, a plurality of interphase spacer rods 200 can be hung and connected on the first rope loop 32 located at the bottom, and the second locking card assembly 40 is provided with a plurality of third locking cards 42 and a plurality of second rope loops 43, and the third locking cards 42 and the second rope loops 43 correspond to the interphase spacer rods 200 one by one.

[0067] In an optional example, each interphase spacer 200 can be hung on the second locking clip 41 through its corresponding second rope loop 43 and third locking clip 42. After the second locking clip 41 is unlocked, each third locking clip 42 can be hung on the lower sub-conductor 300.

[0068] In another optional example, each phase spacer 200 is suspended below the second rope loop 43, the second rope loop 43 is suspended below the third locking card 42, and multiple third locking cards 42 are suspended and connected to each other, and one of the third locking cards 42 is also suspended on the second locking card 41. After unfastening the second locking card 41, a third locking card 42 can be hung on the lower sub-conductor 300 first, and then the other third locking cards 42 can be hung on the lower sub-conductor 300 in turn.

[0069] With the above structure, a helicopter can simultaneously lift multiple interphase spacer bars 200, which greatly improves transportation efficiency.

[0070] Please refer to Figures 1 to 4 The specific operation process of the method for lifting interphase spacer bars by the helicopter sling method proposed by the present invention is now described in detail with reference to an embodiment:

[0071] The helicopter lifted two workers on the line to the work location in two stages using a sling method. The helicopter then returned to the material yard to sling the materials.

[0072] The helicopter arrives at the operation location with the materials hanging on it and slowly descends. When the location is appropriate (first predetermined height), the online operator instructs the helicopter to hover and hangs the third locking card 42 on the lower sub-conductor 300.

[0073] After hanging, the pilot is instructed to continue descending until the force is transferred to the rope loop connected to the wire (second predetermined height), and then any first lock card 31 is unlocked, and the first rope loop 32 at the lower end of the first lock card 31 is disconnected from it.

[0074] The pilot is signaled to ascend, the helicopter slowly ascends, then returns to the lifting point and continues the next lift.

[0075] Finally, the online workers were lifted out of the line using a sling method and returned to the take-off and landing point.

[0076] The detailed explanations of the above-mentioned embodiments are intended only to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limiting the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless otherwise clearly described, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. A helicopter sling device, characterized in that: The helicopter sling device includes a sling assembly, a hook assembly, a plurality of first locking card assemblies and a second locking card assembly, the sling assembly is fixedly connected to the belly of the helicopter, the hook assembly is located below the sling assembly and is hung in connection with the sling assembly, a plurality of first locking card assemblies are hung in sequence below the hook assembly from top to bottom, each of the first locking card assemblies includes a first locking card and a first rope loop, the first rope loop is located below the first locking card and is hung in connection with the first locking card, the second locking card assembly includes a second locking card, a third locking card and a second rope loop connected in series in sequence, the second locking card is hung on the first rope loop located at the bottom, and the second rope loop and the first rope loop located at the bottom are both used to hang the interphase spacer rod; The lengths of the first rope loops increase in order from top to bottom; The online operator unlocks any one of the first locks to separate the interphase spacer from the helicopter; The inner diameter of the third lock card is larger than the inner diameter of the second lock card and the inner diameter of the first lock card; A plurality of interphase spacer bars are hung and connected to the first rope loop located at the bottom, and the second locking card assembly is provided with a plurality of third locking cards and a plurality of second rope loops, and the third locking cards, the second rope loops and the interphase spacer bars are matched one by one; Each of the phase spacers is suspended below the second rope loop, the second rope loop is suspended below the third locking card, and multiple third locking cards are suspended and connected to each other, one of the third locking cards is also suspended on the second locking card. After untying the second locking card, first hang one of the third locking cards on the lower sub-conductor, and then hang the other third locking cards on the lower sub-conductor in turn.

2. The helicopter sling device according to claim 1, characterized in that: The first lock card, the second lock card and the third lock card are all D-type locks.

3. The helicopter sling device according to claim 2, characterized in that: The inner diameter of the third locking card is larger than the inner diameters of the second locking card and the first locking card.

4. The helicopter sling device according to claim 1, wherein: The helicopter sling device includes three first locking card assemblies connected in series.

5. The helicopter sling device according to claim 1, wherein: The sling assembly comprises a belly main hook, a first closed ring, a fourth locking card and an insulating rope which are sequentially connected from top to bottom. The belly main hook is fixedly connected to the belly of the helicopter.

6. The helicopter sling device according to claim 5, characterized in that: The sling assembly also includes a belly auxiliary hook, a second closed ring, and a secondary rope of a fifth locking card connected in sequence. The belly auxiliary hook is fixedly connected to the belly of the helicopter and is spaced apart from the belly main hook. One end of the secondary rope is connected to the fifth locking card, and the other end of the secondary rope is connected to the fourth locking card.

7. The helicopter sling device according to claim 5, characterized in that: The hook assembly includes a first shackle, a rotating hook and a second shackle connected in sequence from top to bottom, the first shackle is hung and connected to the insulating rope, and the second shackle is hung and connected to the first lock card located at the top.

8. A method for lifting interphase spacers using a helicopter sling method, using the helicopter sling device according to any one of claims 1 to 7, characterized in that: The method for lifting interphase spacer bars by helicopter sling method comprises: Step 1: Use helicopter to lift the online workers to the working location; Step 2: The helicopter returns to the material yard, and at least one interphase spacer is hung on the helicopter sling device, wherein one end of each interphase spacer is provided with a lifting ring, and the second rope loop and the first rope loop located at the bottom are respectively hung and connected to the lifting ring; Step 3: The helicopter reaches the operating position and hovers at a first predetermined height. The operator unlocks the second lock and hangs the third lock on the lower sub-conductor. Step 4: the helicopter descends to a second predetermined height and hovers, the gravity of the interphase spacer rods is transferred to the second rope loop, and each of the first locking assemblies is in a relaxed state; Step 5: unlock any one of the first locks to separate the interphase spacer from the helicopter.

9. The method for lifting interphase spacers by using a helicopter sling method as claimed in claim 8, characterized in that: In step 2, a guide rope is provided at the other end of the phase spacer.

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