Ice breaking mechanism and automatic deicing device for insulator strings

Abstract

The present invention discloses an ice-breaking mechanism and an automatic de-icing device for an insulator string, the ice-breaking mechanism comprising: a retaining body; an impact disk, which is spaced apart from the retaining body; a magnet pair, which comprises two magnets relatively arranged on the impact disk and the retaining body, at least one of the two magnets being an electromagnet; a spring, which is arranged between the retaining body and the impact disk; wherein: by periodically energizing the electromagnet in the magnet pair, a periodic magnetic force change is generated between the magnet pair, so as to drive the impact disk to generate an impact motion for breaking the ice layer on the periphery of the insulator string. The ice-breaking mechanism provided by the present invention utilizes the cooperation of the magnetic attraction of the electromagnet and the reset force of the spring to make the impact disk impact the ice layer on the insulator, so as to cause the ice layer to fall off.

Description

Technical Field

[0001] The invention relates to an ice-breaking mechanism and an automatic deicing device for an insulator string. Background Art

[0002] In northern China, sleet and freezing rain can easily pose a safety threat to power transmission and transformation projects. Ice on transmission lines can cause problems such as conductor dancing, tower tilting, collapse, line breakage and insulator flashover. This can lead to large-scale power outages. At present, research on deicing of transmission lines has achieved certain results, and many forms of deicing robots for transmission lines have emerged to assist manual deicing, but there has been no good way to de-ice glass insulator strings. It still relies on manual deicing. Under such conditions, it is easy to slip and fall on the line when working at high altitude, which brings great psychological pressure to the operator and poses great safety hazards. Summary of the invention

[0003] In view of the above technical problems existing in the prior art, an embodiment of the present invention provides an ice-breaking mechanism and an automatic deicing device for an insulator string.

[0004] In order to solve the above technical problems, the technical solution adopted in the embodiments of the present invention is:

[0005] An ice-breaking mechanism, comprising:

[0006] Maintain body;

[0007] an impact disk spaced apart from the retaining body;

[0008] A magnet pair, comprising two magnets disposed oppositely on the impact disk and the retaining body, at least one of the two magnets being an electromagnet;

[0009] A spring is disposed between the retaining body and the impact disk; wherein:

[0010] The electromagnets in the magnet pair are energized periodically to generate periodic magnetic force changes between the magnet pair, so as to drive the impact disk to generate an impact motion for breaking the ice layer on the periphery of the insulator string.

[0011] Preferably, the impact disc comprises two half disc bodies buckled opposite to each other; the retaining body comprises two clamping petals buckled opposite to each other, and the two half disc bodies are respectively fixed on the two clamping petals; wherein:

[0012] The two clamping petals are used to cover the shaft between two adjacent insulators in the insulator string;

[0013] The front side of the impact disk faces the surface of the insulator.

[0014] Preferably, the surface of the front side of the impact disk is covered with protrusions, and the protrusions are used to impact the ice layer.

[0015] Preferably, the front side of the impact disk has a surface matching the insulator.

[0016] Preferably, the magnet pairs include a plurality of groups, and the plurality of groups of magnet pairs are circumferentially arranged.

[0017] Preferably, the spring comprises a plurality of springs, and the plurality of springs are arranged circumferentially; wherein:

[0018] A plurality of groups of oppositely arranged plug posts are arranged on the retaining body and the impact disk, and each group of plug posts extends into the spring from both ends of the spring to guide the expansion and contraction of the spring.

[0019] Preferably, the magnet of the magnet pair arranged on the impact disk is an electromagnet, and a threading hole is opened in the impact disk, and a wire for supplying power to the electromagnet passes through the threading hole to connect to the electromagnet.

[0020] Preferably, the protrusion is a cylindrical protrusion.

[0021] Preferably, the springs and the magnet pairs are arranged alternately in the circumferential direction.

[0022] The invention also discloses an automatic deicing device for an insulator string, comprising the above-mentioned ice-breaking mechanism.

[0023] Compared with the prior art, the ice-breaking mechanism and the insulator string automatic deicing device of the present invention have the following beneficial effects:

[0024] 1. The ice-breaking mechanism provided by the present invention utilizes the cooperation of the magnetic attraction of the electromagnet and the restoring force of the spring to make the impact disk impact the ice layer on the insulator, causing the ice layer to fall off.

[0025] 2. The deicing device provided by the present invention can automatically de-ice the ice layer on the insulator string by utilizing the cooperation between the ice-breaking mechanism and the traveling mechanism, thereby avoiding manual de-icing and effectively reducing the risks caused by the de-icing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of an automatic deicing device for an insulator string provided in an embodiment of the present invention.

[0027] Figure 2 A main cross-sectional view of an automatic deicing device for an insulator string provided in an embodiment of the present invention.

[0028] Figure 3 A main cross-sectional view of a fixing device in an automatic deicing device for an insulator string provided by an embodiment of the present invention.

[0029] Figure 4 for Figure 2 An enlarged view of detail A.

[0030] Figure 5 A schematic diagram of the three-dimensional structure of an automatic deicing device for an insulator string provided in an embodiment of the present invention (with the heating mechanism removed).

[0031] Figure 6 A schematic diagram of the three-dimensional structure of a clamping mechanism in a traveling mechanism of an automatic deicing device for an insulator string provided in an embodiment of the present invention.

[0032] Figure 7 A schematic diagram of the three-dimensional structure of an impact disk of an ice-breaking mechanism in an automatic deicing device for an insulator string provided in an embodiment of the present invention.

[0033] Figure 8 A cross-sectional view of an impact disk of an ice-breaking mechanism in an automatic deicing device for an insulator string provided by an embodiment of the present invention.

[0034] Fig. 9 A cross-sectional view of an impact disk of an ice-breaking mechanism in an automatic deicing device for an insulator string provided by an embodiment of the present invention.

[0035] Fig.10 A schematic diagram of the three-dimensional structure of a cover of a heating mechanism in an automatic deicing device for an insulator string provided in an embodiment of the present invention.

[0036] Fig.11 A cross-sectional view of a cover of a heating mechanism in an automatic deicing device for an insulator string provided by an embodiment of the present invention.

[0037] In the figure:

[0038] 10-ice breaking mechanism; 11-impact disc; 111-protrusion; 112-threading hole; 12-electromagnet; 13-spring; 20-travel mechanism; 21-clamping mechanism; 211-connecting rod; 2111-main connecting rod; 2112-secondary connecting rod; 2113-pin shaft; 212-clamping flap; 2121-wear-resistant tile; 2122-button; 213-guide strip; 2131-guide groove; 214-slider; 2141-threading hole; 215-electromagnet; 216-spring; 2 2-fixed seat; 23-movable seat; 24-screw; 25-motor; 251-mounting plate; 26-base; 30-heating mechanism; 31-cover; 311-hole; 312-cavity; 313-flange; 40-fixing device; 41-power supply; 42-seat; 421-block; 422-spring; 51-first delay switch; 52-second delay switch; 53-stop column; 100-insulator string; 101-insulator; 102-shaft; 200-cross arm. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] An embodiment of the present invention discloses an automatic deicing device for an insulator string, which is used to remove ice on an insulator string 100 , and specifically to remove ice on each insulator 101 connected in series through a shaft 102 .

[0041] like Figures 1 to 11 As shown, the device includes: a fixing device 40, an ice-breaking mechanism 10, a heating mechanism 30 and a traveling mechanism 20. The ice-breaking mechanism 10 is an actuator for deicing, and the traveling mechanism 20 is used to adjust the position of the ice-breaking mechanism 10 so that the ice-breaking mechanism 10 can de-ice each insulator 101; the heating mechanism 30 is an auxiliary mechanism of the ice-breaking mechanism 10, and the heating mechanism 30 heats the insulator string 100 to make the de-icing operation of the ice-breaking mechanism 10 smoother; the fixing device 40 is used to place components such as a power supply 41.

[0042] like Figures 1 to 3 As shown, the fixing device 40 specifically includes a holder 42, the bottom of which is provided with a U-shaped slot, a block 421 is provided on the slot wall of the slot, and a spring 422 is provided between the block 421 and the holder 42, so that the block 421 allows the cross arm 200 on one side of the insulator string 100 to enter the slot by retraction, and the block 421 is extended by the reset force of the spring 422 to stop the cross arm 200 from escaping from the slot, so that the holder 42 is detachably fixed on the cross arm 200. The power supply 41 for providing electric energy to the ice breaking mechanism 10 and the walking mechanism 20 and the related control module are fixed on the holder 42.

[0043] like Figure 2 , 5 As shown in Figure 6, the walking mechanism 20 includes a base 26, a fixed base 22, a movable base 23, a clamping mechanism 21, a motor 25, a screw and related switches. The base 26 is located directly below the insulator string 100, and a slide rail extending along the axis 102 of the insulator string 100 is formed on the base 26. The fixed base 22 is fixed to the rear side of the base 26, and the movable base 23 is arranged on the base 26 and can slide along the extension direction of the slide rail.

[0044] A clamping mechanism 21 is disposed on both the fixed seat 22 and the movable seat 23 . The clamping mechanism 21 includes a connecting rod 211 , a sliding block 214 , a magnet pair, a clamping flap 212 and a guide bar 213 .

[0045] The connecting rod 211 includes two groups, each group of connecting rods 211 includes a main connecting rod 2111 and a secondary connecting rod 2112 pivoted at the end; the two main connecting rods 2111 in the two groups of connecting rods 211 are pivoted by a pin 2113; the slider 214 includes two sliders 214, the two sliders 214 are respectively connected to the lower ends of the secondary connecting rods 2112 of the two groups of connecting rods 211, and dovetail grooves are provided on the fixed seat 22 and the sliding seat, and the extension direction of the dovetail groove is perpendicular to the extension direction of the slide rail; the bottom of the two sliders 214 is provided with a dovetail-shaped sliding bar, which is located in the dovetail groove, so that the two sliders 214 can slide closer or farther along the extension direction of the dovetail groove.

[0046] The upper ends of the two pivotally connected main connecting rods 2111 are each provided with a clamping flap 212. The two clamping flaps 212 are brought close to and interlocked or moved away from each other through the relative pivoting of the two main connecting rods 2111. The approaching or moving away action of the two clamping flaps 212 enables the clamping mechanism 21 to cover the shaft body 102 between two adjacent insulators 101 or release the covering of the shaft body 102.

[0047] The magnet pair includes two electromagnets 215, which are respectively arranged on two opposite sliders 214. A threading hole 2141 is provided on the slider 214. The wires drawn from the power supply 41 of the fixing device 40 can be inserted into the slider 214 through the threading hole 2141 to be connected to the electromagnet 215, so that the power supply 41 can supply power to the electromagnet 215. A spring 216 is also provided between the two sliders 214. In this way, when power is supplied to the electromagnets 215 on the sliders 214, the two sliders 214 are attracted to each other by the electromagnets 215, so that the two clamping flaps 212 are close to each other and cover the shaft 102. The attraction of the two electromagnets 215 disappears by stopping power supply to the electromagnets 215. At this time, the spring 216 is reset to make the two sliders 214 move away from each other, so that the two clamping flaps 212 move away from each other and release the covering of the shaft 102.

[0048] A wear-resistant tile 2121 is disposed on the inner side of the clamping petal 212 , and the two wear-resistant tiles 2121 directly cover the shaft body 102 .

[0049] A guide bar 213 is provided on both the fixed seat 22 and the movable seat 23. The guide bar 213 is located between the two sliders 214. A guide groove 2131 extending in the vertical direction is provided on the guide bar 213, so that the pin shaft 2113 pivotally connected between the two main connecting rods 2111 passes through the guide groove 2131 and can slide along the guide groove 2131. The guide groove 2131 guides the pin shaft 2113 so that the clamping flap 212 at the upper end of the main connecting rod 2111 can only move relatively close to or away from each other.

[0050] The lead screw 24 is arranged along the extension direction of the slide rail, and the lead screw 24 passes through the movable seat 23, and the head of the lead screw extends into the fixed seat 22, wherein: the lead screw 24 and the movable seat 23 form a spiral transmission, so that when the lead screw 24 rotates, it can drive the movable seat 23 to extend and slide along the slide rail, and the lead screw 24 and the fixed seat 22 can rotate relative to each other but do not form a spiral transmission, so that when the lead screw 24 only rotates, the fixed seat 22 will not be driven to move, however, when the lead screw 24 moves axially as a whole, it can drive the base 26 to move, and the fixed seat 22 also moves synchronously. The motor 25 is arranged on the mounting plate 251 on the rear side of the base 26, and the tail of the lead screw 24 is connected to the motor 25, and the motor 25 is used to drive the lead screw 24 to rotate.

[0051] like Figure 4 , 7 As shown in FIGS. 8 and 9, the ice breaking mechanism 10 includes: an impact disk 11, a retaining body, a magnet pair and a spring 13. The impact disk 11 includes two half disk bodies arranged opposite to each other, and the two clamping petals 212 of the above-mentioned walking mechanism 20 serve as retaining bodies. Two half disk bodies are correspondingly arranged on each side of the two clamping petals 212.

[0052] The magnet pairs include multiple groups, which are circumferentially arranged between the impact disk 11 and the two clamping petals 212. Each group of magnet pairs includes two electromagnets 12, and the two electromagnets 12 of each group of magnet pairs are respectively arranged on the half disk body and the clamping petals 212. A wire is led out from the power supply 41 of the fixing device 40 for connection to the electromagnet 12. Preferably, a wire threading hole 112 is opened in the impact disk 11, and the wire passes through the wire threading hole 112 and is connected to the electromagnet 12.

[0053] The spring 13 includes a plurality of springs 13, which are circumferentially arranged between the impact disk 11 and the two clamping petals 212, and the springs 13 and the magnet pairs are arranged alternately. The clamping petals 212 and the impact disk 11 are provided with plugs at positions corresponding to the springs 13, and the two plugs extend into the spring 13 from both ends of the spring 13, and when the spring 13 is extended, the plugs are used to guide the spring 13. The side of the impact disk 11 facing the insulator 101 has a surface matching the insulator 101, and a cylindrical protrusion 111 is formed on this side.

[0054] In combination with the above-mentioned action characteristics of the clamping mechanism 21, after the two clamping petals 212 on the clamping mechanism 21 cover the shaft 102 between two adjacent insulators 101, the two half disks are buckled, and at this time, the surface with the protrusion 111 faces the insulator 101. When the magnet pair is periodically energized, the magnetic force generated by the magnet pair and the restoring force of the spring 13 cause the impact disk 11 to exert a certain frequency of impact on the ice layer of the insulator 101 to force the ice layer to fall off the insulator 101.

[0055] like Figure 1, 10 As shown in Figures 1 and 11, the heating mechanism 30 includes a cover 31 and a hot blower. The cross section of the cover 31 is U-shaped, and the cover 31 is buckled outside the insulator string 100 and fixed to the base 26 of the traveling mechanism 20 by a connecting plate. A plurality of holes 311 are provided on the inner side of the cover 31, and a cavity 312 is provided inside the cover 31, and a plurality of holes 311 pass through the cavity 312.

[0056] A flange 313 is formed at the bottom of the cover body 31, and a hot blower is connected to the flange 313. The hot blower, as a component in the prior art, is used to provide a hot air flow to the cavity 312. The hot air flow is blown out from the hole 311 and blown toward the insulator string 100 to accelerate the shedding of the ice layer on the insulator string 100. The heating mechanism 30 serves as an auxiliary component of the above-mentioned ice breaking mechanism 10.

[0057] In order to control the actions between the clamping mechanisms 21 and the actions between the components of the clamping mechanisms 21, a first delay switch 51 is provided on the front side of the base 26, a second delay switch 52 is provided on the front side of the fixed seat 22, and a stop column 53 is provided at the position of the movable seat 23 opposite to the second delay switch 52; a button 2122 is provided on one of the two clamping petals 212.

[0058] The working process of the above-mentioned deicing device is introduced below:

[0059] First, the fixing device 40 is clamped on the cross arm 200 on one side of the insulator string 100, the clamping mechanism 21 on the fixed seat 22 is clamped on the shaft 102 between the two insulators 101 on the rear side, and the clamping mechanism 21 on the movable seat 23 is clamped on the shaft 102 on the front side.

[0060] The buttons 2122 on the clamping petals 212 on the two clamping mechanisms 21 are triggered, and the buttons 2122 cause the power supply 41 to periodically energize the electromagnets 215 of the ice-breaking mechanisms 10 on the two clamping mechanisms 21, so that the impact disks 11 on the two clamping mechanisms 21 collide with the corresponding insulators 101. At the same time, the heating mechanism 30 is used to heat the insulator string 100 to accelerate the shedding of the ice layer on the insulator 101.

[0061] After the ice-breaking mechanism 10 on the two clamping mechanisms 21 completely removes the ice layer on the corresponding insulator 101, the power is stopped from being supplied to the magnet pairs on the two sliders 214 on the movable seat 23. Under the action of the spring force between the two sliders 214, the two sliders 214 move away from each other, causing the two clamping petals 212 of the clamping mechanism 21 on the movable seat 23 to move away from each other. After the two clamping petals 212 move away from each other, the button 2122 set on the clamping petals 212 is released, thereby causing the power supply 41 to stop supplying power to the magnet pairs on the ice-breaking mechanism 10, and causing the impact disk 11 to stop impacting the corresponding insulator 101.

[0062] Then, the motor 25 rotates forward and drives the lead screw 24 to rotate forward. The lead screw 24 causes the movable seat 23 to slide forward through the spiral transmission relationship with the movable seat 23. After the movable seat 23 slides to the position that just triggers the first delay switch 51, the clamping mechanism 21 on the movable seat 23 is just opposite to the shaft 102 between the insulators 101 on the front side that have not been de-iced. The first delay switch 51 causes the motor 25 to stop rotating for a period of time and then rotate in the opposite direction. During the period of time when the motor 25 stops rotating, the power supply 41 pushes the slider of the clamping mechanism 21 of the movable seat 23. The magnet pair on 214 is energized to make the two clamping petals 212 of the clamping mechanism 21 cover the corresponding shaft 102 (after the two clamping petals 212 are closed, the trigger button 2122 makes the power supply 41 energize the magnet pair on the corresponding ice-breaking mechanism 10, so that the impact disk 11 on the ice-breaking mechanism 10 impacts the corresponding insulator 101 to de-ice), and then, the magnet pair on the two sliders 214 of the clamping mechanism 21 on the fixed seat 22 is stopped from being energized, and under the action of the spring force of the spring 216 of the clamping mechanism 21, the two clamping petals 212 move away from each other.

[0063] Then, the motor 25 drives the lead screw 24 to rotate in the opposite direction. At this time, the clamping mechanism 21 on the movable seat 23 remains relatively still with the insulator string 100 due to the clamping shaft 102, and the lead screw 24 moves axially forward to drive the base 26 and the fixed seat 22 to move forward. When the fixed seat 22 moves to a position where the second extension switch contacts the stop column 53 on the movable seat 23, the second extension switch is triggered. The second extension switch enables the power supply 41 to energize the magnet pair on the slider 214 of the clamping mechanism 21 on the fixed seat 22, thereby enabling the two clamping petals 212 of the clamping mechanism 21 to cover the shaft 102 at the corresponding position. At the same time, the button 2122 on the clamping petal 212 is triggered, causing the power supply 41 to energize the magnet pair on the ice-breaking mechanism 10, thereby enabling the corresponding impact disk 11 to hit the ice layer on the insulator 101.

[0064] Finally, the ice layers on all the insulators 101 are removed in sequence by using the forward and reverse rotation of the motor 25 and the above-mentioned related switches.

[0065] The advantages of the present invention are:

[0066] 1. The ice breaking mechanism 10 provided by the present invention utilizes the cooperation of the magnetic attraction of the electromagnet 12 and the restoring force of the spring 13 to make the impact disk 11 impact the ice layer on the insulator 101, causing the ice layer to fall off.

[0067] 2. The walking mechanism 20 provided by the present invention utilizes the clamping action of the two clamping mechanisms 21 and the cooperation between the lead screw 24 and the fixed seat 22 and the movable seat 23 to adjust the position of the ice-breaking mechanism 10 on the insulator string 100 to complete the de-icing operation of all insulators 101 in all insulator strings 100.

[0068] 3. The heating mechanism 30 provided by the present invention is used to heat the insulator string 100 to reduce the adhesion of the ice layer to the insulator string 100, thereby facilitating de-icing of the insulator string 100.

[0069] 4. The deicing device provided by the present invention can automatically de-ice the ice layer on the insulator string 100 by utilizing the cooperation between the ice-breaking mechanism 10 and the traveling mechanism 20, thereby avoiding manual de-icing and effectively reducing the risks caused by de-icing work.

[0070] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. An ice-breaking mechanism, characterized in that: include: Maintain body; an impact disk, which is spaced apart from the retaining body; A magnet pair, comprising two magnets disposed oppositely on the impact disk and the retaining body, at least one of the two magnets being an electromagnet; A spring is disposed between the retaining body and the impact disk; wherein: The electromagnets in the magnet pair are energized periodically to generate periodic magnetic force changes between the magnet pair, so as to drive the impact disk to generate an impact motion for breaking the ice layer on the periphery of the insulator string.

2. The ice breaking mechanism according to claim 1, characterized in that: The impact disk comprises two half disk bodies buckled opposite to each other; the retaining body comprises two clamping petals buckled opposite to each other, and the two half disk bodies are respectively fixed on the two clamping petals; wherein: The two clamping petals are used to cover the shaft between two adjacent insulators in the insulator string; The front side of the impact disk faces the surface of the insulator; the surface of the front side of the impact disk is covered with protrusions, and the protrusions are used to impact the ice layer; The front side of the impact disk has a surface that matches the insulator.

3. The ice breaking mechanism according to claim 1, characterized in that: The magnet pairs include a plurality of groups, and the plurality of groups of magnet pairs are arranged circumferentially.

4. The ice breaking mechanism according to claim 3, characterized in that: The spring comprises a plurality of springs, and the plurality of springs are arranged circumferentially; wherein: A plurality of groups of oppositely arranged plug posts are arranged on the retaining body and the impact disk, and each group of plug posts extends into the spring from both ends of the spring to guide the expansion and contraction of the spring.

5. The ice breaking mechanism according to claim 1, characterized in that: The magnet of the magnet pair arranged on the impact disk is an electromagnet, and a threading hole is opened in the impact disk. A wire for supplying power to the electromagnet passes through the threading hole to connect to the electromagnet.

6. The ice breaking mechanism according to claim 2, characterized in that: The protrusion is a cylindrical protrusion.

7. The ice breaking mechanism according to claim 4, characterized in that: The springs and the magnet pairs are arranged alternately in the circumferential direction.

8. An automatic deicing device for an insulator string, characterized in that: It comprises an ice-breaking mechanism as claimed in any one of claims 1 to 7.

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