Electric insulating lifting rod for cleaning post insulator

Abstract

The invention relates to an electric insulating lifting rod for cleaning a post insulator. The electric insulating lifting rod consists of an insulating lifting rod and an electric mechanism which are connected together. The insulating lifting rod comprises a base, a regular hexagonal supporting rod arranged on the base and a multi-stage lifting rod arranged at the top of the supporting rod; a descending stop ring is arranged above the opening in the bottom of the supporting rod; the electric mechanism is arranged on the opening side of the supporting rod; a screw rod is arranged in the supporting rod; the electric mechanism comprises a mechanism box fixed on the base and a motor arranged in the mechanism box; and a small-diameter belt pulley is arranged on an output shaft of the motor. The device can meet the height requirement when the ultra-high-voltage all-upright post insulator is cleaned, avoids the risk of high-altitude operation, and is good in stability, low in cost, convenient to operate, time-saving and labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of insulator dirt cleaning for electric power, and particularly to an electric insulating lifting rod for cleaning post insulators. Background Art

[0002] Post insulators are the main supporting and insulating equipment for electric power equipment in substations (converter stations), showing typical large aspect ratio structural characteristics. In order to have sufficient insulation distance, the higher the voltage level, the more obvious the large aspect ratio structural characteristics of the post insulators. For example, in a ±800kV converter station, the distance from the top of the DC field post insulator to the ground is close to 16 meters.

[0003] Since most insulators are in outdoor environments, pollutants such as dust, bird droppings, and industrial waste gases often deposit on their surfaces. When the air humidity increases, it will cause an increase in the surface conductance of the insulators, a decrease in insulation performance, and easy corona discharge. In severe cases, it may trigger surface discharge and flashover accidents, posing great risks to the safe and stable operation of power grid equipment. Therefore, regularly cleaning the dirt on the insulator surface and timely eliminating potential flashover discharge hazards are of great significance for ensuring the safe and stable operation of the large power grid and reliable power supply.

[0004] Currently, the main methods for cleaning the dirt on the insulator surface are manual wiping or high-pressure water gun flushing. For the post insulators of high-voltage power equipment, due to their high height from the ground, lifting devices such as boom trucks need to be used to complete the entire cleaning work. This not only has low cleaning efficiency, high physical requirements for cleaning personnel, but also has risks of working at heights and electric shock.

[0005] In recent years, some new insulator cleaning technologies have improved the deficiencies of manual cleaning methods to a certain extent, such as using unmanned aerial vehicle + water flushing technology, robotic arm cleaning technology, and climbing robot cleaning technology. However, in the unmanned aerial vehicle + water flushing technology, the water carrying capacity of the unmanned aerial vehicle is limited. The robotic arm cleaning technology is more suitable for use in working environments such as factories and workshops. The climbing robot cleaning technology is prone to falling when crossing the insulator flange and is not convenient to install. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an electric insulating lifting rod for cleaning post insulators with good stability, high safety, and low cost for cleaning insulators with a large aspect ratio structure.

[0007] To solve the above problems, an electric insulating lifting rod for cleaning a post insulator according to the present invention is characterized in that: the electric insulating lifting rod is composed of an insulating lifting rod and an electric mechanism connected together; the insulating lifting rod includes a base, a support rod in the shape of a regular hexagon placed on the base, and a multi-stage lifting rod provided at the top of the support rod; a descending stop ring is provided above the opening position at the bottom of the support rod; the electric mechanism is provided on the opening side of the support rod; a lead screw is provided inside the support rod; the electric mechanism includes a mechanism box fixed on the base and a motor placed inside the mechanism box; a small-diameter pulley is provided on the output shaft of the motor.

[0008] The lead screw includes a lead screw nut plate located above the descending stop ring and a large-pitch lead screw passing through the center of the lead screw nut plate; a large-diameter pulley is provided below the lead screw nut plate, and a lead screw clamping ring is provided below the large-diameter pulley; both the large-diameter pulley and the lead screw clamping ring are integrally connected to the large-pitch lead screw by welding; the small-diameter pulley and the large-diameter pulley are connected together by a belt; the bottom of the large-pitch lead screw is sleeved with a lead screw support sleeve, which is welded to the base; the lead screw support sleeve is sleeved with a lead screw clamping flange, which is fixed to the base by bolts.

[0009] The large-pitch lead screw and the lead screw nut plate are connected by thread fit.

[0010] The lead screw nut plate is in the shape of a regular hexagon, with a convex platform Ⅰ with internal thread in the middle, three rope fixing holes Ⅰ on each outer edge, and an installation convex platform on the surface; the installation convex platform is sleeved inside the bottom of the first-stage lifting support rod of the multi-stage lifting rod.

[0011] The multi-stage lifting rod is composed of M-stage lifting rod components, and M≥2; the N th-stage lifting rod component includes a lifting support rod in the shape of a regular hexagon, an anti-derailment lifting seat, and a lifting traction ring, N ≤M; there is a long and narrow opening Ⅰ on each non-adjacent upper surface of the lifting support rod; the anti-derailment lifting seat is provided with the lifting support rod, and the lifting traction ring is provided at the top of the lifting support rod.

[0012] Each outer edge of the anti-derailment lifting seat has three rope fixing holes Ⅱ, and a convex platform Ⅱ is provided inside, and the convex platform Ⅱ is nested with the inner side of the bottom of the lifting support rod.

[0013] The lifting and towing ring includes a pulley fixing hoop nested outside the top of the lifting support rod and a guiding ring sleeved inside the top of the lifting support rod; three pairs of pulleys and three pairs of fixing terminals are provided on the pulley fixing hoop, and the pulleys and the fixing terminals are evenly arranged at intervals along the pulley fixing hoop; a long and narrow opening II with the same size as the upper end of the lifting support rod is formed on the fixing surface of the pulley; the N three pairs of the pulleys on the lifting and towing ring in the N -th stage lifting rod assembly of the multi-stage lifting rod are respectively connected with the N three pairs of the fixing terminals on the lifting and towing ring in the -1-th stage lifting rod assembly and the anti-derailment lifting seat in the +1-th stage lifting rod assembly through stay ropes.

[0014] The guiding ring is regular hexagon.

[0015] The present invention has the following advantages compared with the prior art: 1. The multi-stage lifting rod is provided in the present invention. It adopts the principle of telescopic lifting, and multiple sections of the lifting rod lift simultaneously, with a fast lifting speed. It can start, stop and self-lock at any height position without sliding down, greatly improving the cleaning efficiency of the insulator.

[0016] 2. The support rod in the present invention is regular hexagon. The top of the lifting support rod is provided with a lifting and towing ring, and the stay ropes are arranged diagonally, with good stability and high reliability.

[0017] 3. The support rod, the lifting support rod and the multi-stage lifting rod in the present invention adopt high-strength insulating materials, avoiding the risk of electric shock. At the same time, it has the ability of live cleaning and can meet the requirements of live cleaning of insulators.

[0018] 4. The maximum lifting height of the present invention can be determined by the number of stages of the multi-stage lifting rod, which can meet the height requirements for cleaning all vertical post insulators of ultra-high voltage and extra-high voltage, avoiding the risk of high-altitude operation.

[0019] 5. The present invention has a compact structure, low cost, and is electrically lifted, with convenient operation, time-saving and labor-saving.

[0020] 6. The present invention can also be used in other scenarios such as flagpoles, lightning rod support rods, antenna support rods, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes in detail the specific embodiments of the present invention with reference to the drawings.

[0022] Figure 1 is the schematic diagram of the principle of the present invention.

[0023] Figure 2 is the structural schematic diagram of the present invention.

[0024] Figure 3Schematic diagram of the support rod assembly and the base in the present invention.

[0025] Figure 4 Partial sectional view of the present invention.

[0026] Figure 5 Schematic diagram of the lead screw in the present invention.

[0027] Figure 6 Enlarged view A of the present invention.

[0028] Figure 7 In the present invention, the N Schematic diagram of the lifting rod assembly of the nth stage.

[0029] Figure 8 Schematic diagram of the lifting traction ring assembly in the present invention.

[0030] Figure 9 Schematic diagram of the lifting traction ring in the present invention.

[0031] Figure 10 Schematic diagram of the anti-derailment lifting seat in the present invention.

[0032] Figure 11 Schematic diagram of the guide ring in the present invention.

[0033] Figure 12 Schematic diagram of the lifting support rod in the present invention.

[0034] Figure 13 Schematic diagram of the lead screw nut plate in the present invention.

[0035] Figure 14 Front view of the present invention.

[0036] Figure 15 Rear view of the present invention.

[0037] Figure 16 Expansion view of the present invention.

[0038] In the figure: 1 - Insulated lifting rod; 101 - Support rod; 1011 - Lower stop ring; 102 - Base; 103 - Lead screw; 1031 - Large pitch lead screw; 1032 - Lead screw nut plate; 1033 - Large diameter pulley; 1034 - Lead screw clamping ring; 1035 - Lead screw support sleeve; 1036 - Lead screw clamping flange; 2 - Electric mechanism; 201 - Mechanism box; 202 - Motor; 203 - Belt; 204 - Small diameter pulley; 3 - Multi-stage lifting rod; 301 - Pulling rope; 302 - Lifting support rod; 303 - Anti-derailment lifting seat; 304 - Lifting traction ring; 3041 - Pulley fixing hoop; 3042 - Pulley; 3043 - Fixed terminal; 3044 - Guide ring. Detailed implementation manners

[0039] As shown Figures 2 - 16 in the figure, an electric insulating lifting rod for cleaning a post insulator is composed of an insulating lifting rod 1 and an electric mechanism 2 connected together.

[0040] The insulating lifting rod 1 includes a base 102, a support rod 101 in the shape of a regular hexagon placed on the base 102, and a multi-stage lifting rod 3 provided at the top of the support rod 101; a descending stop ring 1011 is provided above the opening position at the bottom of the support rod 101; the electric mechanism 2 is provided on the opening side of the support rod 101; a lead screw 103 is provided inside the support rod 101; the electric mechanism 2 includes a mechanism box 201 fixed on the base 102 and a motor 202 placed inside the mechanism box 201; a small-diameter pulley 204 is provided on the output shaft of the motor 202.

[0041] Among them: the lead screw 103 includes a lead screw nut plate 1032 located above the descending stop ring 1011 and a large-pitch lead screw 1031 passing through the center of the lead screw nut plate 1032; a large-diameter pulley 1033 is provided below the lead screw nut plate 1032, and a lead screw clamping ring 1034 is provided below the large-diameter pulley 1033; both the large-diameter pulley 1033 and the lead screw clamping ring 1034 are integrally connected to the large-pitch lead screw 1031 by welding; the small-diameter pulley 204 and the large-diameter pulley 1033 are connected together by a belt 203; a lead screw support sleeve 1035 is sleeved at the bottom of the large-pitch lead screw 1031, and the lead screw support sleeve 1035 is welded to the base 102; a lead screw clamping flange 1036 is sleeved on the lead screw support sleeve 1035, and the lead screw clamping flange 1036 is fixed to the base 102 by bolts. The large-pitch lead screw 1031 and the lead screw nut plate 1032 are connected by screw thread fit.

[0042] The bottom of the large-pitch lead screw 1031 is sleeved in the lead screw support sleeve 1035, and the lead screw clamping ring 1034 is pressed by the lead screw clamping flange 1036 to prevent the lead screw 103 from disengaging from the lead screw support sleeve 1035 during rotation.

[0043] The lead screw nut plate 1032 is in the shape of a regular hexagon, with a boss Ⅰ with internal thread in the middle, three pull rope fixing holes Ⅰ on each outer edge, an installation boss on the surface, and the outer edges of each corner are rounded; the installation boss is sleeved inside the bottom of the first-stage lifting support rod 302 of the multi-stage lifting rod 3 and fixed together with it.

[0044] The multi-stage lifting rod 3 is composed of M-stage lifting rod components, and M≥2; the N nth-stage lifting rod component includes a lifting support rod 302 in the shape of a regular hexagon, an anti-derailment lifting seat 303, and a lifting traction ring 304. N≤M; Each of the upper ends of the lifting support rods 302 has a long and narrow opening Ⅰ on non-adjacent surfaces; The anti-derailment lifting seat 303 is provided with a lifting support rod 302, and a lifting traction ring 304 is provided at the top of the lifting support rod 302.

[0045] Each outer edge of the anti-derailment lifting seat 303 has three rope fixing holes Ⅱ, and a boss Ⅱ is provided inside. The boss Ⅱ is nested with the inner side of the bottom of the lifting support rod 302.

[0046] The lifting traction ring 304 includes a pulley fixing hoop 3041 nested on the outer side of the top of the lifting support rod 302 and a guiding ring 3044 sleeved on the inner side of the top of the lifting support rod 302; Three pairs of pulleys 3042 and three pairs of fixing terminals 3043 are provided on the pulley fixing hoop 3041, and the pulleys 3042 and the fixing terminals 3043 are arranged at equal intervals along the pulley fixing hoop 3041; A long and narrow opening Ⅱ with the same size as the upper end of the lifting support rod 302 is opened on the fixing surface of the pulley 3042; The N Three pairs of pulleys 3042 on the lifting traction ring 304 of the lifting rod assembly in the nth N -level lifting rod assembly are respectively connected with three pairs of fixing terminals 3043 on the lifting traction ring 304 of the N n - 1 - level lifting rod assembly and the anti-derailment lifting seat 303 of the

[0047] n + 1 - level lifting rod assembly through a pull rope 301.

[0048] The guiding ring 3044 is in a regular hexagon shape, and the outer edges of each corner are rounded. During the movement of the multi-level lifting rod 3, the guiding ring 3044 can reduce the assembly gap between each level of lifting rods, enhance the structural stability, and at the same time, avoid mutual friction between each level of lifting support rods due to direct contact.

[0048] The long and narrow opening Ⅰ and the long and narrow opening Ⅱ are used for passing through the pull rope 301.

[0049] The support rod 101, the lifting support rod 302, and the multi-level lifting rod 3 are made of high-strength fiberglass insulation materials; The anti-derailment lifting seat 303, the lifting traction ring 304, the pulley fixing hoop 3041, the pulley 3042, the fixing terminal 3043, and the guiding ring 3044 are made of high-strength epoxy resin insulation materials; The pull rope 301 is made of high-molecular polyethylene fiber, and the diameter range is 2.5 mm to 5 mm; The lead screw 103 is made of carbon steel.

[0050] The working principle of the present invention is as Figure 1 shown: The motor 202 rotates, driving the small-diameter pulley 204 to rotate. The small-diameter pulley 204 is driven by the belt 203 to drive the large-diameter pulley 1033 to rotate. The rotation of the large-diameter pulley 1033 drives the lead screw 103 to rotate. An anti-derailment lead screw clamping flange 1036 and a lead screw clamping ring 1034 are designed at the bottom of the lead screw 103. Therefore, the lead screw 103 can only rotate in place. The large-pitch lead screw 1031 in the lead screw 103 is in threaded fit with the lead screw nut disc 1032. Therefore, during the rotation of the lead screw 103, the large-pitch lead screw 1031 drives the lead screw nut disc 1032 to move up or down in the vertical direction through the thread. The lead screw nut disc 1032 is nested and fixed with the first-level lifting rod. Therefore, the first-level lifting rod moves up or down synchronously with the lead screw nut disc 1032 in the vertical direction. One end of the first-level rope is connected to the fixed terminal 3043 at the end of the support rod 101 and passes through the pulley block at the top of the first-level lifting rod to be connected to the bottom of the second-level lifting rod. Since the total length of the pulling rope 301 remains unchanged, during the rise or fall of the first-level lifting rod, the pulley block at the top of the first-level lifting rod rises or falls synchronously, but the fixed terminal 3043 at the end of the support rod 101 is stationary relative to the ground. Therefore, the second-level lifting rod rises or falls at a speed twice that of the first-level lifting rod.

[0051] Similarly, one end of the second-level rope is connected to the fixed terminal 3043 at the end of the first-level rod lifting rod and passes through the pulley block at the top of the second-level lifting rod to be connected to the bottom of the third-level lifting rod. Since the total length of the pulling rope 301 remains unchanged, during the rise or fall of the second-level lifting rod, the pulley block at the top of the second-level rod lifting rod rises or falls synchronously, and the third-level lifting rod rises or falls at a speed twice that of the second-level lifting rod.

[0052] And so on. N One end of the -th pulling rope is connected to N the fixed terminal 3043 at the end of the (-1)-th rod lifting rod and passes through N the pulley block at the top of the -th lifting rod to be connected to N the bottom of the (+1)-th lifting rod. Since the total length of the pulling rope 301 remains unchanged, N during the rise or fall of the -th lifting rod, N the pulley block at the top of the -th rod lifting rod rises or falls synchronously, N and the -th lifting rod rises or falls at a speed twice that of N the (-1)-th lifting rod.

[0053] Assume that the initial height of the first-level lifting rod is L meters (from the top to the ground), the average lifting speed is ν meters per second, the lifting time is t seconds, and the number of lifting rod levels is M. Then the lifting speed of the -th lifting rod is: N • N • v meters per second, and the height of the top of the -th lifting rod from the ground is: L + N • N •v •t meters.

[0054] Assume that the weight of each lifting rod is G, the pulling ropes at each level are only subjected to the pulling force in the vertical direction, and there are 3 pulling ropes for each lifting rod. Then when N = M - 1, the pulling force on the N -th pulling rope is: G / 3; when N < M - 1, the pulling force on the N -th pulling rope is: , where N = 1, 2, 3, …, M - 2.

Claims

1. An electric insulating lifting rod for cleaning post insulators, characterized in that: The electric insulated lifting rod is composed of an insulated lifting rod (1) and an electric mechanism (2) connected together; the insulated lifting rod (1) includes a base (102), a support rod (101) in the shape of a regular hexagon placed on the base (102), and a multi-stage lifting rod (3) provided at the top of the support rod (101); a downward stop ring (1011) is provided above the opening position at the bottom of the support rod (101); the electric mechanism (2) is provided on the opening side of the support rod (101); a lead screw (103) is provided inside the support rod (101); the electric mechanism (2) includes a mechanism box (201) fixed on the base (102) and a motor (202) placed inside the mechanism box (201); a small-diameter pulley (204) is provided on the output shaft of the motor (202).

2. The electric insulating lifting rod for cleaning post insulators according to claim 1, characterized in that: The lead screw (103) includes a lead screw nut plate (1032) located above the downward stop ring (1011) and a large-pitch lead screw (1031) passing through the center of the lead screw nut plate (1032); a large-diameter pulley (1033) is provided below the lead screw nut plate (1032), and a lead screw clamping ring (1034) is provided below the large-diameter pulley (1033); both the large-diameter pulley (1033) and the lead screw clamping ring (1034) are integrally connected to the large-pitch lead screw (1031) by welding; the small-diameter pulley (204) is connected to the large-diameter pulley (1033) by a belt (203); a lead screw support sleeve (1035) is sleeved at the bottom of the large-pitch lead screw (1031), and the lead screw support sleeve (1035) is welded to the base (102); the lead screw support sleeve (1035) is sleeved with a lead screw clamping flange (1036), and the lead screw clamping flange (1036) is fixed to the base (102) by bolts.

3. The electric insulating lifting rod for cleaning post insulators according to claim 2, characterized in that: The large-pitch lead screw (1031) is connected to the lead screw nut plate (1032) by threaded fit.

4. The electric insulating lifting rod for cleaning post insulators according to claim 3, characterized in that: The lead screw nut plate (1032) is in the shape of a regular hexagon, with a boss Ⅰ with internal thread in the middle, three rope fixing holes Ⅰ on each outer edge, and an installation boss on the surface; the installation boss is sleeved inside the bottom of the first-stage lifting support rod (302) of the multi-stage lifting rod (3).

5. The electric insulating lifting rod for cleaning post insulators according to claim 1, characterized in that: The multi-stage lifting rod (3) is composed of M-stage lifting rod assemblies, where M≥2; the N lifting rod assembly of the nth stage includes a lifting support rod (302) in the shape of a regular hexagon, an anti-derailment lifting seat (303), and a lifting traction ring (304), N where n≤M; on the non-adjacent upper surfaces of the lifting support rod (302), there is a long and narrow opening I respectively; the anti-derailment lifting seat (303) is provided with the lifting support rod (302), and the top of the lifting support rod (302) is provided with the lifting traction ring (304).

6. The electric insulating lifting rod for cleaning post insulators according to claim 5, characterized in that: Each outer edge of the anti-derailment lifting seat (303) has three rope fixing holes Ⅱ, and a boss Ⅱ is provided inside, and the boss Ⅱ is nested with the inner side of the bottom of the lifting support rod (302).

7. The electric insulating lifting rod for cleaning post insulators according to claim 5, characterized in that: The lifting and towing ring (304) includes a pulley fixing hoop (3041) nested outside the top of the lifting support rod (302) and a guiding ring (3044) sleeved inside the top of the lifting support rod (302); three pairs of pulleys (3042) and three pairs of fixing terminals (3043) are provided on the pulley fixing hoop (3041), and the pulleys (3042) and the fixing terminals (3043) are evenly arranged at intervals along the pulley fixing hoop (3041); a long and narrow opening II with the same size as the upper end of the lifting support rod (302) is formed on the fixing surface of the pulley (3042); the N three pairs of the pulleys (3042) on the lifting and towing ring (304) in the N nth-level lifting rod assembly are respectively connected to the N three pairs of fixing terminals (3043) on the lifting and towing ring (304) in the (n - 1)th-level lifting rod assembly and the anti-derailment lifting seat (303) in the (n + 1)th-level lifting rod assembly through a pulling rope (301).

8. The electric insulating lifting rod for cleaning post insulators according to claim 7, characterized in that: The guide ring (3044) is in the shape of a regular hexagon.

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