Tool for fastening nut on pillar type insulator for power supply

Abstract

The utility model discloses a nut fastening tool on a pillar type insulator for power supply, and relates to the technical field of power supply line maintenance. According to the technical key points, the device comprises an insulating outer sleeve, and a main driving shaft is movably inserted into the insulating outer sleeve; the lower end of the main driving shaft is connected with a rotating module; the upper end of the main driving shaft is connected with the power input end of the horizontal force transmission module, the power output end of the horizontal force transmission module is connected with the fastening sleeve, and the horizontal force transmission module can transmit power of the main driving shaft to the fastening sleeve in the horizontal direction when the main driving shaft rotates so as to drive the fastening sleeve to rotate around the axis of the fastening sleeve. When a maintainer uses the tool provided by the invention, the maintainer can finish the fastening effect on the nut on the insulator by standing on the ground, and compared with the prior art, the tool not only can reduce the risk of high-altitude operation, but also can effectively reduce the electric shock risk of the maintainer during hot-line operation.

Description

Technical Field

[0001] This application relates to the field of power line maintenance technology, and in particular to a nut tightening tool for power supply post insulators. Background Technology

[0002] Post insulators are typically constructed by bonding insulating components and metal fittings together using adhesives or mechanical clamps. The traditional mainstream type of post insulator is the porcelain insulator. In power lines, post insulators support conductors and prevent current leakage. Specifically, as components of disconnect switches and circuit breakers, they serve to fix busbars and isolate potential differences. Post insulators are primarily used outdoors. Due to environmental factors such as wind, post insulators may experience slight tangential slippage at the threaded connections due to fluctuating axial forces. Repeated application of this force can gradually loosen the nuts on the post insulator. If not addressed promptly, high-voltage lines may become misaligned or detached, potentially leading to safety accidents.

[0003] To ensure the stable operation of power lines, relevant personnel need to regularly check whether the nuts on the post insulators are loose. Once found, they should be tightened to effectively avoid the safety hazards caused. Currently, the fastening nuts on post insulators are mostly located at the top (the specific positional relationship between the insulator and the fastening nut can be found in Chinese patent documents with application numbers 201820278829.1 and 200920024801.6). Furthermore, current power line maintenance often requires zero-power-outage work (i.e., completing equipment maintenance or upgrades through live-line work without interrupting the user's normal power supply). If maintenance workers use traditional tools such as wrenches to climb to high places to perform live-line maintenance on the nuts above the post insulators, it is obviously not only inconvenient but also poses risks of working at height and electric shock. Therefore, there is an urgent need for a tool that allows maintenance workers to easily tighten the nuts on the top of high-level post insulators from the ground. Utility Model Content

[0004] This application provides a nut tightening tool for power supply post insulators, which allows maintenance workers to easily tighten the nuts on the top of the post insulators at heights from the ground.

[0005] The above-mentioned objective of this application is achieved through the following technical solution:

[0006] A nut fastening tool for a power supply post-type insulator includes an insulating outer tube, a main drive shaft coaxially inserted inside the insulating outer tube, and a first rotary bearing installed in the gap between the upper and lower ends of the insulating outer tube and the main drive shaft. The outer ring of the first rotary bearing is fixedly connected to the insulating outer tube, and the inner ring of the first rotary bearing is fixedly connected to the main drive shaft.

[0007] The lower end of the main drive shaft is connected to a rotation module, which allows maintenance workers to drive the main drive shaft to rotate around its axis inside the insulating outer sleeve via the rotation module.

[0008] The upper end of the main drive shaft is connected to the power input end of the horizontal force transmission module, and the power output end of the horizontal force transmission module is connected to the fastening sleeve. When the main drive shaft rotates, the horizontal force transmission module can transmit its power horizontally to the fastening sleeve to drive the fastening sleeve to rotate around its own axis.

[0009] Furthermore, the horizontal force transmission module includes a horizontal protective shell, with an opening on the lower side of each end of the horizontal protective shell. One of the openings of the horizontal protective shell is fixedly connected to the upper port of the insulating outer sleeve, and a driven shaft is inserted into the other opening of the horizontal protective shell, with the two being movably connected by a second rotary bearing.

[0010] The lower end of the driven shaft extends out of the horizontal protective shell and is connected to the fastening sleeve;

[0011] The upper end of the main drive shaft extends from the upper port of the insulating outer sleeve into the horizontal protective shell. A first gear is sleeved on the portion of the main drive shaft located inside the horizontal protective shell. A second gear is sleeved on the driven shaft at a position corresponding to the height of the first gear. The first gear and the second gear are connected by a toothed belt.

[0012] Furthermore, the upper end of the fastening sleeve is connected to the lower end of the driven shaft via a universal joint.

[0013] Furthermore, the rotating module is an integral rotating handle, and one end of the rotating handle is welded and fixed to the lower end of the main drive shaft.

[0014] Furthermore, the rotating module is a ratchet wrench, and the lower end of the main drive shaft is shaped to match the head shape of the ratchet wrench.

[0015] Furthermore, the rotation module is a one-way rotation mechanism, which includes a driven ratchet. The driven ratchet is sleeved on the shaft of the main drive shaft located outside the lower port of the insulating outer tube. A pawl is engaged on one side of the driven ratchet. A mounting rod is movably inserted into the pawl, and a traction spring is connected between the two. The upper end of the mounting rod is fixed to the adjusting handle, and one end of the adjusting handle is connected to the insulating outer tube through a third rotating bearing.

[0016] Furthermore, the insulating outer tube includes a metal tube body and an insulating rubber sleeve, with the insulating rubber sleeve fitted over the outside of the metal tube body.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] The insulating outer sleeve of this application has a certain height to ensure that maintenance personnel, standing on the ground, can lift the horizontal force transmission module above the insulator through the insulating outer sleeve. The horizontal force transmission module of this application has a certain length in the horizontal direction, so that maintenance personnel can maintain a sufficient horizontal safety distance from the insulator when operating on the ground. A fastening sleeve matching the specification of the nut on the insulator is provided on the lower side of the horizontal force transmission module away from the insulating outer sleeve. Maintenance personnel can adjust their position on the ground to align the fastening sleeve with the nut on the insulator, and then lower the fastening sleeve through the insulating outer sleeve until it covers the nut on the insulator. The insulating outer sleeve of this application contains a main drive shaft. Maintenance personnel can rotate the main drive shaft using a rotating module. The horizontal force transmission module can then transmit the rotational force of the main drive shaft to the fastening sleeve, thereby achieving the effect of tightening the nut on the insulator located at a higher position using the fastening sleeve. Maintenance personnel can tighten the nuts on the insulators by standing on the ground using the tools of this application. Compared with the existing technology, it is not only more convenient to use and reduces the risk of working at height, but also effectively reduces the risk of electric shock to maintenance personnel when working on live parts because the live parts have a sufficient safety distance and the tools themselves have an insulating effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a partial structural diagram of the insulating outer sleeve and horizontal protective shell of this application after being cut open;

[0021] Figure 2 This is a partial structural diagram after the top plate of the horizontal force transmission module of this application has been removed;

[0022] Figure 3 This is a schematic diagram of the overall structure of the rotating module in this application when it is a rotating handle;

[0023] Figure 4 This is a schematic diagram of the overall structure of the rotating module in this application when it is a ratchet wrench;

[0024] Figure 5 yes Figure 4 A schematic diagram showing the state of the middle ratchet wrench and the lower end of the main drive shaft before they are connected.

[0025] Figure 6 This is a schematic diagram of the overall structure when the rotating module of this application is a unidirectional rotating mechanism;

[0026] Figure 7 yes Figure 6 Enlarged structural diagram at point A;

[0027] Figure 8 Is Figure 6 A schematic diagram showing the state when the lower end of the main drive shaft is supported on a retractable outrigger in the prior art, based on the overall structure.

[0028] Reference numerals: 1. Insulating outer sleeve; 11. Metal tube body; 12. Insulating rubber sleeve; 2. Main drive shaft; 3. First rotary bearing; 4. Rotation module; 41. Rotation handle (first improved version of the rotation module); 42. Ratchet wrench (second improved version of the rotation module); 43. One-way rotation mechanism (third improved version of the rotation module); 431. Driven ratchet; 432. Pad; 433. Mounting rod; 434. Traction spring; 435. Adjusting grip; 436. Third rotary bearing; 5. Horizontal force transmission module; 51. Horizontal protective shell; 52. Driven shaft; 53. Second rotary bearing; 54. First gear; 55. Second gear; 56. Toothed belt; 6. Fastening sleeve; 7. Universal joint. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0030] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, this application discloses a nut fastening tool for a power supply post-type insulator, which includes an insulating outer tube 1, a main drive shaft 2 coaxially inserted inside the insulating outer tube 1, and a first rotary bearing 3 installed in the gap between the upper and lower ends of the insulating outer tube 1 and the main drive shaft 2. The outer ring of the first rotary bearing 3 is fixedly connected to the insulating outer tube 1, and the inner ring of the first rotary bearing 3 is fixedly connected to the main drive shaft 2.

[0031] The lower end of the main drive shaft 2 is connected to a rotating module 4. The maintenance worker can drive the main drive shaft 2 to rotate around its axis inside the insulating outer sleeve 1 through the rotating module 4.

[0032] The upper end of the main drive shaft 2 is connected to the power input end of the horizontal force transmission module 5, and the power output end of the horizontal force transmission module 5 is connected to the fastening sleeve 6. When the main drive shaft 2 rotates, the horizontal force transmission module 5 can transmit its power in the horizontal direction to the fastening sleeve 6 to drive the fastening sleeve 6 to rotate around its own axis.

[0033] In the above embodiments, the insulating outer sleeve 1 of this application has a hollow structure, and both its upper and lower ends are provided with openings. In order to ensure that the main drive shaft 2 located inside the insulating outer sleeve 1 experiences less resistance during rotation and that maintenance personnel operate it with less effort, this application fixes a first rotary bearing 3 at both the upper and lower ends of the insulating outer sleeve 1, and movably connects it to the main drive shaft 2 through the first rotary bearing 3. In this way, not only is it easier to rotate the main drive shaft 2, but also the insulating outer sleeve 1 remains relatively stationary in the maintenance personnel's hands when rotating the main drive shaft 2, thus reducing friction between the equipment and the maintenance personnel's hands.

[0034] The height of the insulating outer tube 1 in this application ensures that maintenance personnel, standing on the ground, can lift the horizontal force transmission module 5 above the insulator via the insulating outer tube 1. The horizontal force transmission module 5 of this application has a certain length in the horizontal direction, so that maintenance personnel can maintain a sufficient horizontal safety distance from the insulator when operating on the ground. A fastening sleeve 6 matching the specification of the nut on the insulator is provided on the lower side of the end of the horizontal force transmission module 5 away from the insulating outer tube 1. When the maintenance personnel adjust their position on the ground to align the fastening sleeve 6 with the nut on the insulator, they can lower the fastening sleeve 6 through the insulating outer tube 1 until the fastening sleeve 6 covers the nut on the insulator. The insulating outer tube 1 of this application contains a main drive shaft 2. The maintenance personnel can rotate the main drive shaft 2 by using the rotating module 4. The horizontal force transmission module 5 can then transmit the rotational force of the main drive shaft 2 to the fastening sleeve 6 after rotation, thereby achieving the effect of tightening the nut on the insulator located at a high position using the fastening sleeve 6. Maintenance personnel can tighten the nuts on the insulators by standing on the ground using the tools of this application. Compared with the prior art, this not only reduces the risk of working at height, but also effectively reduces the risk of electric shock to maintenance personnel when working on live surfaces because the live parts have a sufficient safety distance and the tools themselves have an insulating effect.

[0035] Furthermore, such as Figure 2As shown, the horizontal force transmission module 5 includes a horizontal protective shell 51. Both ends of the horizontal protective shell 51 have an opening on their lower sides. One of the openings of the horizontal protective shell 51 is fixedly connected to the upper port of the insulating outer sleeve 1. A driven shaft 52 is inserted into the other opening of the horizontal protective shell 51 and the two are movably connected by a second rotating bearing 53.

[0036] After the lower end of the driven shaft 52 extends out of the horizontal protective shell 51, it is connected to the fastening sleeve 6;

[0037] The upper end of the main drive shaft 2 extends from the upper port of the insulating outer sleeve 1 into the horizontal protective shell 51. A first gear 54 is sleeved on the part of the main drive shaft 2 located inside the horizontal protective shell 51. A second gear 55 is sleeved on the driven shaft 52 at a position corresponding to the height of the first gear 54. The first gear 54 and the second gear 55 are connected by a toothed belt 56.

[0038] In the above embodiments, the horizontal protective shell 51 of this application has an opening on the lower side of each end in the length direction, and one of the openings is fixedly connected to the upper port of the insulating outer sleeve 1. In this way, the horizontal protective shell 51 and the insulating outer sleeve 1 can form an integral structure, so that maintenance personnel can adjust the position of the horizontal protective shell 51 and the components connected thereto through the insulating outer sleeve 1. The upper end of the main drive shaft 2 is located inside the horizontal protective housing 51, and the upper end of the main drive shaft 2 is fixedly connected to the first gear 54. A driven shaft 52 is movably connected to another opening of the horizontal protective housing 51 through the second rotary bearing 53. One end of the driven shaft 52 is located inside the horizontal protective housing 51, and the other end of the driven shaft 52 extends to the bottom of the horizontal protective housing 51 and is connected to the fastening sleeve 6. The second gear 55 installed on the part of the driven shaft 52 located inside the horizontal protective housing 51 is connected to the first gear 54 on the main drive shaft 2 through the toothed belt 56 (a chain can also be used in addition to the toothed belt 56). When the maintenance personnel rotate the main drive shaft 2, the main drive shaft 2 will drive the second gear 55 to rotate synchronously through the toothed belt 56 via the first gear 54 at its top. The center of the second gear 55 is exactly connected to the fastening sleeve 6. In this way, the power of the main drive shaft 2 can be transmitted to the fastening sleeve 6 by the horizontal force transmission module 5, so that the maintenance personnel can tighten the nut at the upper end of the post insulator using the fastening sleeve 6 on the ground. In order to further improve the stability of the driven shaft 52 during actual use, a bearing seat can be added on the inner side of the top plate of the horizontal protective shell 51 at the position corresponding to the driven shaft 52, and the upper end of the driven shaft 52 is inserted into the bearing seat. In this way, the driven shaft 52 can have multiple support and limiting points during operation, so as to effectively improve the stability of its working process.

[0039] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, the upper end of the fastening sleeve 6 is connected to the lower end of the driven shaft 52 via a universal joint 7.

[0040] In the above embodiments, the universal joint 7 is a commonly used connector in mechanical connections. The universal joint 7 can achieve multi-angle power transmission through its special structure (such as a cross shaft). The fastening sleeve 6 and the driven shaft 52 of this application are connected by the universal joint 7. In this way, even if the insulating outer sleeve 1 held by the maintenance personnel is slightly tilted during the long-distance power transmission process, the universal joint 7 can ensure that the power is stably output to the fastening sleeve 6.

[0041] Furthermore, such as Figure 3 As shown, the rotating module 4 is a rotating handle 41 with an integral structure. One end of the rotating handle 41 is welded and fixed to the lower end of the main drive shaft 2.

[0042] In the above embodiments, when the rotating module 4 of this application is a rotating handle 41 that is welded and fixed to the lower end of the main drive shaft 2, the maintenance personnel need to lift the insulating outer sleeve 1 with one hand and rotate the rotating handle 41 in the circumferential direction below the main drive shaft 2 with the other hand in order to rotate the main drive shaft 2. This will achieve the effect of driving the drive shaft to rotate inside the insulating outer sleeve 1. Since the rotating handle 41 has a certain horizontal length, it makes it easier for the maintenance personnel to rotate the main drive shaft 2.

[0043] Furthermore, such as Figure 4 and Figure 5 As shown, the rotating module 4 is a ratchet wrench 42, and the lower end of the main drive shaft 2 is shaped to match the head shape of the ratchet wrench 42.

[0044] In the above embodiments, the ratchet wrench 42 is a common maintenance tool. It offers the advantage of continuous rotation in one direction and reverse return to its original position without requiring repeated adjustments. However, when maintenance personnel lift the insulating outer sleeve 1 with one hand, they must simultaneously rotate the handle 41 continuously in a full circle below the main drive shaft 2 with the other, which is still inconvenient. By designing the lower end of the main drive shaft 2 to match the head of the ratchet wrench 42, maintenance personnel can directly utilize the readily available ratchet wrench 42. By assembling its head with the lower end of the main drive shaft 2 and repeatedly swinging the ratchet wrench 42 with small amplitude, the nut on the insulator can be tightened using the fastening sleeve 6. The operation method is the same as the normal use of the ratchet wrench 42, effectively improving ease of use.

[0045] Furthermore, such as Figure 6 and Figure 7As shown, the rotating module 4 is a one-way rotating mechanism 43. The one-way rotating mechanism 43 includes a driven ratchet 431, which is sleeved on the shaft of the main drive shaft 2 located outside the lower port of the insulating outer sleeve 1. A pawl 432 is engaged on one side of the driven ratchet 431. A mounting rod 433 is movably inserted on the pawl 432 and a traction spring 434 is connected between the two. The upper end of the mounting rod 433 is fixed on the adjusting handle 435. One end of the adjusting handle 435 is connected to the insulating outer sleeve 1 through a third rotating bearing 436.

[0046] In the above embodiments, if the ratchet wrench 42 is to be used to rotate the main drive shaft 2, the lower end of the main drive shaft 2 is difficult to pass through the head of the ratchet wrench 42. This means that the insulating sleeve 1 can only be lifted by the maintenance personnel, which obviously increases the labor intensity of the maintenance personnel. In this application, the rotating module 4 is set as a one-way rotating mechanism 43 of the above structure, which allows the lower end of the main drive shaft 2 to be located at the lowest point of the entire tool. In use, after the maintenance personnel adjust the position of the fastening sleeve 6, as described above, the lower end of the main drive shaft 2 can be positioned at the lowest point of the entire tool. Figure 8 As shown, the lower end of the main drive shaft 2 can be placed on a retractable support leg (retractable support legs are commonly used in home decoration and industrial fields, such as the bottom of some dining tables and bathroom cabinets). Since the main drive shaft 2 is supported by the retractable support leg, the labor intensity of workers can be effectively reduced. Furthermore, the upper end of the retractable support leg can be provided with a cylindrical groove that matches the shape of the lower end of the main drive shaft 2. This reduces the risk of the main drive shaft 2 detaching from the retractable support leg during rotation when the lower end of the main drive shaft 2 is inserted into the cylindrical groove.

[0047] The driven ratchet 431 of this application is sleeved on the main drive shaft 2 and has a gap between it and the lower end of the main drive shaft 2. In this way, when the main drive shaft 2 is placed on the telescopic outrigger, the driven ratchet 431 can avoid contact with the upper end of the telescopic outrigger. A pawl 432 is engaged on one side of the driven ratchet 431. A mounting rod 433 is rotatably connected to the pawl of the pawl 432, and a traction spring 434 is connected between the two. When the pawl 432 moves in the opposite direction of the ratchet teeth on the driven ratchet 431, the traction spring 434 can assist the pawl 432 to reset in time. At this time, the elastic force of the traction spring 434 is less than the friction between the nut and the insulator. Therefore, when the pawl 432 drives the driven ratchet 431 to rotate a certain angle to reset, the pawl 432 will not rotate with the driven ratchet 431. The principle is similar to that of the ratchet wrench 42. The upper end of the mounting rod 433, which is equipped with a pawl 432, is connected to the adjusting handle 435. One end of the adjusting handle 435 is connected to the insulating outer sleeve 1 through the third rotary bearing 436 (the inner ring of the third rotary bearing 436 is fixedly connected to the insulating outer sleeve 1, and the outer ring of the third rotary bearing 436 is fixedly connected to the adjusting handle 435). In this way, maintenance personnel can repeatedly swing the adjusting handle 435 around the insulating outer sleeve 1 to achieve the effect of re-tightening the nut above the insulator using the fastening sleeve 6.

[0048] Furthermore, such as Figures 3-6 As shown, the insulating outer tube 1 includes a metal tube body 11 and an insulating rubber sleeve 12, with the insulating rubber sleeve 12 fitted over the outside of the metal tube body 11.

[0049] In the above embodiments, the metal tube 11 provides the tool with good overall rigidity, thereby improving its stability during use. The insulating rubber sleeve 12 located on the outside of the metal tube 11 effectively prevents electric shock to maintenance personnel due to accidental leakage of electrical circuits. Furthermore, whether it is the adjustable handle 435, the rotating handle 41, or the ratchet wrench 42, the area on which the maintenance worker holds the tool can be equipped with a gripping area made of the same material as the insulating rubber sleeve 12, which can further improve the safety of maintenance personnel during use.

[0050] The implementation principle of this embodiment is as follows: When maintenance personnel find that the nuts above the insulator need to be tightened outdoors, they can first hold the insulating outer sleeve 1 with one hand to lift the horizontal force transmission module 5 above the insulator, and then adjust their own position so that the fastening sleeve 6 is aligned with the nut to be tightened above the insulator. After alignment, the fastening sleeve 6 can be lowered through the insulating outer sleeve 1 until the fastening sleeve 6 covers the nut on the insulator.

[0051] Next, maintenance personnel can use the rotating module 4 to drive the main drive shaft 2 to rotate around its own axis. When the main drive shaft 2 rotates, its rotational force can be transmitted to the fastening sleeve 6 through the horizontal force transmission module 5, thereby achieving the effect of tightening the nut on the insulator located at a high position using the fastening sleeve 6. Since maintenance personnel can avoid the trouble of climbing to a high position and using a wrench to work on the nut on the insulator under live conditions by using the tool of this application, the use of the tool of this application not only improves the convenience of operation when tightening the nut on the top of the insulator and reduces the risk of working at height, but also effectively reduces the risk of electric shock when maintenance personnel work on live equipment because the area where the worker's hand is gripped is insulated and the safety distance between the maintenance personnel and the live equipment is increased.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A power supply post insulator upper nut fastening tool characterized by: The utility model provides an insulating outer sleeve (1) is inserted with a main drive shaft (2) coaxially in the insulating outer sleeve (1), the clearance between the upper and lower ports of the insulating outer sleeve (1) and the main drive shaft (2) is installed with a first rotary bearing (3), and the outer ring of the first rotary bearing (3) is fixedly connected with the insulating outer sleeve (1), and the inner ring of the first rotary bearing (3) is fixedly connected with the main drive shaft (2); The lower end of the main drive shaft (2) is connected with a rotary module (4), and the main drive shaft (2) can be driven to rotate around its axis in the insulating outer sleeve (1) by the rotary module (4) of the maintenance worker; The upper end of the main drive shaft (2) is connected with the power input end of a horizontal force transmission module (5), the power output end of the horizontal force transmission module (5) is connected with a fastening sleeve (6), and the horizontal force transmission module (5) can transmit the power of the main drive shaft (2) to the fastening sleeve (6) in the horizontal direction to drive the fastening sleeve (6) to rotate around its axis when the main drive shaft (2) rotates.

2. The upper nut fastening tool for a post type insulator for power supply according to claim 1, characterized by: The horizontal force transmission module (5) comprises a horizontal protective shell (51), both ends of the horizontal protective shell (51) are provided with an opening, one of the openings of the horizontal protective shell (51) is fixedly connected with the upper port of the insulating outer sleeve (1), and a driven shaft (52) is inserted into the other opening of the horizontal protective shell (51) and connected with the fastening sleeve (6) through the second rotary bearing (53); The lower end of the driven shaft (52) extends out of the horizontal protective shell (51) and is connected with the fastening sleeve (6); The upper end of the main drive shaft (2) extends into the horizontal protective shell (51) from the upper port of the insulating outer sleeve (1), a first gear (54) is sleeved on the part of the main drive shaft (2) in the horizontal protective shell (51), a second gear (55) is sleeved on the driven shaft (52) at a position corresponding to the first gear (54) in height, and the first gear (54) and the second gear (55) are connected through a toothed belt (56).

3. The upper nut fastening tool for a post type insulator for power supply according to claim 2, characterized by: The upper end of the fastening sleeve (6) is connected with the lower end of the driven shaft (52) through a universal joint (7).

4. The upper nut fastening tool for a post type insulator for power supply according to claim 3, characterized by: The rotary module (4) is a rotary handle (41) of an integrated structure, one end of the rotary handle (41) is welded and fixed with the lower end of the main drive shaft (2).

5. The upper nut fastening tool for a post type insulator for power supply according to claim 3, characterized by: The rotary module (4) is a ratchet wrench (42), and the lower end of the main drive shaft (2) is shaped to match the head of the ratchet wrench (42).

6. The upper nut fastening tool for a post type insulator for power supply according to claim 3, characterized by: The rotating module (4) is a one-way rotating mechanism (43), which comprises a driven ratchet wheel (431) sleeved on the shaft of the main driving shaft (2) outside the lower end of the insulated outer sleeve (1), one side of the driven ratchet wheel (431) is engaged with a pawl (432), the pawl (432) movably inserts an installation rod (433) and is connected with a traction spring (434) therebetween, the upper end of the installation rod (433) is fixed on an adjusting handle (435), one end of the adjusting handle (435) is connected with the insulated outer sleeve (1) through a third rotating bearing (436).

7. The upper nut fastening tool for a post type insulator for power supply according to any one of claims 4 to 6, characterized by: The insulated outer sleeve (1) comprises a metal pipe body (11) and an insulated rubber sleeve (12), and the insulated rubber sleeve (12) is sleeved outside the metal pipe body (11).

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