High-voltage mobile isolating switch

Abstract

The invention relates to the technical field of electrical equipment, in particular to a high-voltage movable isolating switch which comprises a movable table, a lifting table and a moving contact, the lifting table is arranged on the movable table, the moving contact is movably mounted on the lifting table, a positioning plate with an arc surface is arranged on the lifting table, the positioning plate is connected with the moving contact through a positioning assembly, and the positioning assembly is arranged on the lifting table. The positioning assembly enables the arc surface of the positioning plate to be matched with an insulator of the fixed contact to adjust the position of the moving contact by means of the lifting power of the lifting platform, the lifting platform is provided with a connecting assembly, and the connecting assembly enables the moving contact to be connected with the fixed contact by means of the lifting power of the lifting platform. According to the invention, by arranging the positioning assembly and the connecting assembly, the moving contact can be positioned and the fixed contact and the moving contact can be connected through the ascending of the lifting platform, so that the problem that poor contact is easy to occur or the disconnecting switch is damaged during connection when the mobile disconnecting switch and the power transmission line disconnecting switch are connected is solved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, in particular to a high-voltage mobile isolating switch. Background Art

[0002] In northern regions, transmission lines are often plagued by ice, which can cause them to break, affecting not only normal power supply but also high maintenance costs.

[0003] In order to solve the problem of transmission lines breaking due to ice hanging, people use knocking to make the ice fall off, but this method is inefficient and requires a lot of labor costs. In order to improve the efficiency of de-icing, the State Grid Corporation of China proposed a line de-icing method for ultra-high voltage direct current transmission system. This line de-icing method is to add connecting wires and switches from the main wiring of the converter station, and change the connection relationship between the converters by changing the on-off state of the corresponding switch, so as to achieve the purpose of increasing the current of the transmission line to melt the ice. This method can also ensure that the direct current transmission system switches between the normal transmission state and the de-icing state. Only a small amount of equipment needs to be added to realize the function of active de-icing without power outage, and it can reduce labor input, but the high-voltage wire is installed on the transmission tower, and the disconnector of the direct current de-icing device needs to be connected to the disconnector on the transmission tower before de-icing can be carried out.

[0004] To this end, the invention patent with application number CN201110434544.5 provides a high-voltage mobile DC disconnector. The disconnector is connected to the moving contact of the disconnector on the transmission tower by combining a mobile ice-melting engineering vehicle, a vertical lifting frame and a lateral moving device, so that the ice-melting work is more convenient. When the high-voltage mobile DC disconnector is in operation, the road surface is usually in an uneven state. When the mobile disconnector is connected to the transmission line disconnector, the moving contact is easily misaligned when connected to the fixed contact, which will cause the connection between the moving contact and the fixed contact to be unstable or cause damage to the fixed contact. In addition, the height of some transmission towers exceeds 10m, and the staff cannot observe the connection status of the disconnector. In addition, the vertical lifting frame is prone to shaking due to insufficient rigidity when performing high-altitude lifting. Therefore, when performing DC snow melting, poor contact or damage to the disconnector is likely to occur.

[0005] Therefore, in order to avoid poor contact when the mobile disconnector is connected to the transmission line disconnector or to avoid damage to the disconnector during the connection, a high-voltage mobile disconnector is proposed. Summary of the invention

[0006] The object of the present invention is to provide a high-voltage mobile disconnector. In order to solve the problem that poor contact is likely to occur when the mobile disconnector is connected to a transmission line disconnector or the disconnector is damaged during the connection, a positioning component and a connecting component are provided. The moving contact can be positioned and the connection between the fixed contact and the moving contact can be achieved through the rise of the lifting platform, so as to solve the problem that poor contact is likely to occur when the mobile disconnector is connected to a transmission line disconnector or the disconnector is damaged during the connection.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A high-voltage mobile disconnect switch comprises a mobile platform, a lifting platform and a moving contact. The lifting platform is arranged on the mobile platform, and the moving contact is movably installed on the lifting platform. A positioning plate with an arc surface is provided on the lifting platform, and the positioning plate is connected to the moving contact through a positioning component. The positioning component relies on the lifting power of the lifting platform to make the arc surface of the positioning plate cooperate with the insulator of the fixed contact to adjust the position of the moving contact. A connecting component is provided on the lifting platform, and the connecting component connects the moving contact with the fixed contact through the lifting power of the lifting platform.

[0009] By setting the positioning component, the position of the moving contact can be adjusted after the position of the moving contact is offset, so that the moving contact can be stably connected to the fixed contact, thereby avoiding connection failure or unstable connection, thereby ensuring the working efficiency of DC ice melting. The positioning component is positioned by the steel frame on the line tower and the insulator on the fixed contact. Since the positioning components are all rigid structures, the stability of the moving contact after connection can be guaranteed, and the arc burning of the fixed contact and the moving contact due to poor contact between the fixed contact and the moving contact can be avoided. The setting of the connecting component can open and close the isolating switch and connect and separate the moving contact and the fixed contact by lifting the lifting platform, thereby making the work more convenient and effectively improving the working efficiency of DC ice melting.

[0010] Preferably, the positioning assembly comprises an adjusting plate, a supporting cylinder and a sliding table, the adjusting plate is mounted on the lifting platform through the adjusting assembly, the connecting assembly is provided with a sliding block, the adjusting plate is slidably mounted with a sliding table, the sliding block is slidably mounted on the sliding table, and the sliding direction of the sliding block is perpendicular to the sliding direction of the sliding table, the moving contact is arranged on the sliding block, two supporting cylinders and two adjusting cylinders are arranged on the adjusting plate, and the two supporting cylinders and the two adjusting cylinders are symmetrically arranged on both sides of the adjusting plate, telescopic rods are arranged on both sides of the sliding block, the telescopic rods are connected with connecting rods, the positioning plate is slidably mounted on the connecting rods, and an adjusting spring is connected between the positioning plate and the connecting rods, the two connecting rods are provided with sliding grooves, the connecting blocks are slidably mounted inside the sliding grooves, the output ends of the two adjusting cylinders are respectively mounted on the two connecting blocks, the supporting cylinder is provided with an air inlet and an air outlet 1, the adjusting cylinder is provided with an air inlet 2 and an air outlet 2, the air outlet 1 is communicated with the air inlet 2, and the two air inlets 2 are communicated through a connecting pipe, the supporting cylinder and the adjusting cylinder are both provided with a reset spring, and the connecting pipe is connected to the connecting assembly.

[0011] The support cylinder is pushed upward by the lifting platform. When the support cylinder is squeezed, the support cylinder is compressed, and the adjusting component can adjust the horizontality of the adjusting plate to make it flush with the steel frame, thereby preventing the moving contact from being skewed and unable to connect with the fixed contact, thereby affecting the normal operation of DC ice melting. After the support cylinder is compressed, the gas inside the support cylinder enters the adjusting cylinder, thereby extending the adjusting cylinder and pushing the sliding platform to move. The adjusting cylinder is provided with a positioning plate, which cooperates with the insulator through the arc surface on the positioning plate, thereby driving the sliding block to move, thereby aligning the moving contact with the fixed contact. At this time, the moving contact can be positioned through the connecting component, thereby ensuring the stable connection between the moving contact and the fixed contact, ensuring the working efficiency of DC ice melting, and avoiding the stability of the contacts after connection, and avoiding the generation of arcs.

[0012] Preferably, the connecting assembly includes a telescopic cylinder, the telescopic rod is installed on the sliding block, the moving contact is installed on the movable end of the telescopic rod, the supporting cylinder is provided with a pressure relief port 1, a pressure relief valve 1 is installed at the pressure relief port, the telescopic cylinder is provided with an air inlet 3, a pressure relief port 2, and an air inlet 4, a pressure relief valve 2 is provided at the pressure relief port 2, the air inlet 3 is connected to the connecting pipe, and one-way valves are provided at the four air inlets, and the set pressure of the pressure relief valve 1 is greater than the set pressure of the pressure relief valve 2.

[0013] It is connected to the connecting pipe through the air inlet three, and a pressure relief valve two is set at the pressure relief port two. When the gas enters the adjusting cylinder, the air pressure inside the adjusting cylinder is lower than the air pressure inside the telescopic cylinder. At this time, the adjusting cylinder is first extended and retracted, so that after the position adjustment of the adjusting cylinder is completed, the telescopic cylinder can be extended to connect the fixed contact with the moving contact, so that the connecting component can not only realize the connection between the moving contact and the fixed contact, but also avoid the problem that when the telescopic cylinder has not completed the positioning, the telescopic cylinder is extended first, resulting in the horizontal height of the moving contact being greater than the horizontal height of the fixed contact, thereby causing the fixed contact and the moving contact to be unable to connect. The setting of the one-way valve can make the telescopic cylinder reset and contract, and the setting of the pressure relief port one, and the setting pressure of the pressure relief valve one is higher than that of the pressure relief valve two, can remove the gas inside the support cylinder when the telescopic cylinder is fully extended, so as to avoid damage to the pressure system due to excessive air pressure.

[0014] Preferably, the adjustment assembly includes two horizontal cylinders, and the two horizontal cylinders are respectively arranged under two supporting cylinders, one end of the horizontal cylinder is fixedly connected to the lifting platform, and the other end is spherically hinged with an adjustment block, and the adjustment block is slidably connected to the adjustment plate. The horizontal cylinder is provided with a connecting port, an exhaust port, and an adjustment port. The supporting cylinder is connected to the connecting port of the horizontal cylinder on the other side, and the exhaust port is connected to a connecting pipe. When the piston inside the horizontal cylinder moves to the top of the horizontal cylinder, the exhaust port and the connecting port are blocked. Reset springs are installed inside the supporting cylinder, the horizontal cylinder, and the adjusting cylinder. The adjusting cylinder is provided with an air intake port, and check valves are provided at all four sides of the air intake port and the air inlet.

[0015] When the lifting platform is tilted, the supporting cylinder contacts the steel frame first, and the supporting cylinder on the other side is not squeezed. The return spring inside the squeezed supporting cylinder is compressed, so the piston inside the horizontal cylinder is pressed down, so that the connecting port and the exhaust port are opened, while the piston inside the horizontal cylinder is not squeezed, and the connecting port and the exhaust port are in a closed state. The horizontal cylinder is set, and the supporting cylinder is connected to the horizontal cylinder on the other side. At this time, the squeezed supporting cylinder cannot be exhausted, so the horizontal pressure on this side is exhausted from the adjusting buckle, and when both supporting cylinders are squeezed, the two connecting ports and the exhaust port are opened. At this time, both supporting cylinders can exhaust and discharge the gas into the adjusting cylinder through the exhaust port, and are compressed synchronously, so that the adjusting plate is parallel to the steel frame, so that the moving contact and the fixed contact are in a vertical state, thereby ensuring the stable connection between the moving contact and the fixed contact. The setting of the one-way valve of the suction port allows the suction port to inhale air to press the piston of the horizontal cylinder downward when the supporting cylinder is not squeezed and the horizontal cylinder is squeezed.

[0016] Preferably, a plurality of limiting grooves are evenly distributed on the piston rod of the horizontal cylinder, a locking channel is opened on the inner wall of the horizontal cylinder, and a locking pin that cooperates with the limiting grooves is elastically connected inside the locking channel.

[0017] By keeping the adjustment port of the horizontal cylinder in a normally open state, the horizontal cylinder will expand and contract due to pressure fluctuations during operation. Therefore, after the adjustment cylinder pushes the positioning plate to contact the insulator, the internal pressure of the adjustment cylinder increases, thereby increasing the internal pressure of the horizontal cylinder, and further pushing the limit pin to cooperate with the limit groove, thereby limiting the movement of the horizontal cylinder, so that the adjustment plate maintains the inclination angle, thereby ensuring that the moving contact and the fixed contact are aligned, ensuring that the contacts can be stably connected, and ensuring the stability of the connection between the moving contact and the fixed contact.

[0018] Preferably, the adjustment plate and the sliding platform are both provided with protruding slide rails, the sliding plate and the sliding block are respectively slidably mounted on the two slide rails, and the upper part of the slide rail is arc-shaped.

[0019] The slide rail is convexly arranged, and the upper surface of the slide rail is arc-shaped. When ice cubes on the insulator fall, it can be prevented from remaining on the slide rail, causing the sliding platform or the sliding block to be stuck and affecting the connection between the moving contact and the fixed contact.

[0020] Preferably, a mounting plate is provided above the support cylinder, the side of the mounting plate close to the telescopic cylinder is tangent to the side wall of the support cylinder, and the other side protrudes from the side wall of the support cylinder, and a plurality of ice-breaking spikes are evenly arranged on the mounting plate, and the ice-breaking spikes are elastically connected to the mounting plate.

[0021] The provision of ice-breaking spikes can prevent ice cubes condensed on the transmission tower from affecting the positioning of the positioning assembly, and the ice-breaking spikes are elastically connected to the support cylinder, and can be ejected after de-icing, so that part of the ice-breaking spikes protrude from the bottom of the steel frame square tube, and then through the restriction of the ice-breaking spikes, the lifting platform can be prevented from shaking the moving contact due to the swing of the blown parts, thereby preventing the shaking of the moving contact from causing poor contact between the contacts, and the provision of the mounting plate can increase the contact area between the support cylinder and the steel frame, which can improve the working stability of the isolating switch, and the side of the mounting plate close to the telescopic cylinder is tangent to the side wall of the support cylinder, and the other side protrudes from the side wall of the support cylinder, so that the support plate can extend out of the side wall of the steel frame square tube, so that the ice-breaking spikes can limit the horizontal displacement of the support cylinder, thereby improving the working stability of the isolating switch.

[0022] Preferably, the positioning plate includes an arc portion and a guide portion, the arc portion is an arc shape matching with the insulator, the arc portion is slidably connected to the connecting rod, the guide portion is straight and is arranged on both sides of the arc portion, and the straight portion is tangent to the arc portion.

[0023] The arc-shaped portion is used to position the moving contact, and the guide portion expands to both sides of the arc-shaped portion, which can increase the radial width of the positioning plate without increasing the axial width of the positioning plate. Therefore, when the lifting platform rises, the interference between the positioning plate and the insulator can be avoided, and the adjustment range of the moving contact is increased, making it more convenient for the staff to operate.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. By setting a positioning component, relying on the arc surface on the positioning plate, the arc surface is matched with the insulator, so as to drive the moving contact to move under the fixed contact, and then the moving contact is connected to the fixed contact through the connecting component. Therefore, the fixed contact can be accurately positioned during use to ensure the stable connection between the moving contact and the fixed contact. A supporting cylinder is provided on the positioning component, which relies on the supporting cylinder and the pipe above the transmission line steel frame to play a supporting role, so as to avoid the shaking of the lifting platform causing the shaking of the positioning plate, resulting in the loose connection between the moving contact and the fixed contact, or causing the insulator to be damaged due to excessive force.

[0026] 2. By setting up an adjustment component, the verticality of the moving contact is adjusted through the support cylinder and the tube above the transmission line to keep the fixed contact and the moving contact flush, thereby avoiding the connection failure between the moving contacts due to the coaxiality of the moving contacts and the fixed contacts when the connecting component pushes the moving contact and the fixed contact to connect due to the inclination of the ground.

[0027] 3. By setting the guide part, the width of the positioning plate in the radial direction can be increased without increasing the width of the positioning plate in the axial direction. Therefore, when the lifting platform rises, the interference between the positioning plate and the insulator can be avoided, and the adjustment range of the moving contact can be increased, making it more convenient for the staff to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the support cylinder of the present invention when it is not squeezed;

[0029] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0030] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0031] Figure 4 It is a schematic diagram of the overall structure when the movable contact and the fixed contact of the present invention are connected;

[0032] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0033] Figure 6 This is a working state diagram of the support cylinder, the horizontal cylinder, the adjustment cylinder, and the telescopic rod when the support cylinder of the present invention is not squeezed;

[0034] Figure 7 for Figure 6 A partial enlarged view of point D in the middle;

[0035] Figure 8 This is a working state diagram of the support cylinder, the horizontal cylinder, the adjustment cylinder, and the telescopic rod when the support cylinder on one side of the present invention is squeezed;

[0036] Fig. 9 This is a working state diagram of the support cylinders, horizontal cylinders, adjustment cylinders, and telescopic rods when the support cylinders on both sides of the present invention are squeezed.

[0037] In the figure: 1, moving platform; 2, lifting platform; 3, moving contact; 4, positioning plate; 41, arc portion; 42, guide portion; 5, positioning assembly; 51, adjusting plate; 52, supporting cylinder; 521, reset spring; 522, air inlet 1; 523, air outlet 1; 524, pressure relief port 1; 53, sliding platform; 54, telescopic rod; 55, connecting rod; 551, slide groove; 56, adjusting spring; 57, connecting block; 58, connecting pipe; 59, adjusting cylinder; 591, air inlet 2; 592, air outlet 2; 593, Inlet; 6. Fixed contact; 7. Insulator; 8. Connecting assembly; 81. Sliding block; 82. Telescopic cylinder; 821. Inlet three; 822. Pressure relief port two; 823. Inlet four; 83. Pressure relief valve two; 84. One-way valve; 9. Adjusting assembly; 91. Horizontal cylinder; 911. Connecting port; 912. Exhaust port; 913. Adjusting port; 92. Adjusting block; 10. Limiting groove; 11. Locking channel; 12. Locking pin; 13. Slide rail; 14. Mounting plate; 15. Ice breaker spike; 16. Steel frame; 17. Pressure relief valve one. DETAILED DESCRIPTION

[0038] See also Figures 1 to 9 The present invention provides a high-voltage mobile isolating switch, and the technical solution is as follows:

[0039] A high-voltage mobile disconnector comprises a mobile platform 1, which is a driving device in the prior art. The driving device is moved by roller driving. A lifting platform 2 is arranged on the mobile platform 1. The lifting platform 2 is a scissor-type lifting platform 2 in the prior art. A moving contact 3 is movably installed on the lifting platform 2. A positioning plate 4 with an arc surface is arranged on the lifting platform 2. The positioning plate 4 is connected to the moving contact 3 through a positioning component 5. A connecting component 8 is arranged on the lifting platform 2. During the rising process of the lifting platform 2, the positioning plate 4 is moved by the rising power of the lifting platform 2. When the positioning plate 4 moves to the insulating fixed contact 6, the positioning plate 4 moves to the insulating fixed contact 6. When the insulator 7 is in place, the arc surface on the positioning plate 4 plays a guiding role, so that the arc surface of the positioning plate 4 moves to a position coaxial with the insulator 7, and during the movement of the positioning plate 4, the moving contact 3 is driven to move, so that the moving contact 3 is flush with the fixed contact 6, and then the moving contact 3 is automatically connected to the fixed contact 6 through the rising power of the lifting platform 2. Therefore, the stability of the moving contact 3 after connection can be guaranteed, and the fixed contact 6 and the moving contact 3 can be avoided to cause an arc to burn the fixed contact 6 and the moving contact 3 due to poor contact. Moreover, the positioning can be quickly carried out during the work process, which makes the work more convenient and effectively improves the working efficiency of DC ice melting.

[0040] The positioning assembly 5 includes an adjustment plate 51, which is connected to the lifting platform 2 through an adjustment assembly 9. A sliding block 81 is provided on the connecting assembly 8. A sliding platform 53 is slidably installed on the adjustment plate 51. The sliding block 81 is slidably installed on the sliding platform 53, and the sliding direction of the sliding block 81 is perpendicular to the sliding direction of the sliding platform 53. The moving contact 3 is arranged on the sliding block 81. Two supporting cylinders 52 and two adjusting cylinders 59 are provided on the adjustment plate 51, and the two supporting cylinders 52 and the two adjusting cylinders 59 are symmetrically arranged on both sides of the adjustment plate 51. Telescopic rods 54 are provided on both sides of the sliding block 81. The telescopic rod 54 is connected to a connecting rod 55. The positioning plate 4 is slidably installed On the connecting rod 55, an adjusting spring 56 is connected between the positioning plate 4 and the connecting rod 55. A sliding groove 551 is opened on the two connecting rods 55. A connecting block 57 is slidably installed inside the sliding groove 551. The output ends of the two adjusting cylinders 59 are respectively installed on the two connecting blocks 57. The supporting cylinder 52 is provided with an air inlet and an air outlet 1 523. The adjusting cylinder 59 is provided with an air inlet 2 591 and an air outlet 2 592. The air outlet 1 523 is connected to the air inlet 2 591, and the two air inlets 2 591 are connected through a connecting pipe 58. Reset springs 521 are provided inside the supporting cylinder 52 and the adjusting cylinder 59. The connecting pipe 58 is connected to the connecting component 8.

[0041] During the ascending process of the lifting platform 2, the support cylinder 52 is squeezed onto the square tube of the steel frame 16. At this time, the support cylinder 52 is compressed, and the support cylinder 52 inhales air from the air inlet 1 522, and then the gas in the support cylinder 52 is discharged from the air outlet 1 523, so that the gas enters the adjusting cylinder 59 from the connecting channel along the air inlet 2 591. At this time, the adjusting cylinder 59 extends out, pushing the positioning plate 4 to move, so that the positioning plate 4 moves along the axial direction of the adjusting cylinder 59. At this time, the adjusting cylinder 59 pushes the sliding table 53 to move the sliding table 53 in the axial direction of the adjusting cylinder 59. When the arc surface on the positioning plate 4 contacts the insulator 7, the adjusting cylinder 59 drives the sliding block 81 to move in a direction perpendicular to the axial direction of the adjusting cylinder 59. When the arc surface of the positioning plate 4 is fully matched with the insulator 7, the positioning plate 4 cannot move at this time. When the two positioning plates 4 and the insulator 7 are overlapped, the moving contact 3 moves to the bottom of the fixed contact 6, so as to position the moving contact 3. At this time, the moving contact 3 can be connected to the fixed contact 6 through the connecting component 8, so as to ensure that the fixed contact 6 and the moving contact can be quickly connected when the isolating switch is connected at high altitude, and avoid poor contact of the isolating switch after connection; the supporting cylinder 52 is installed on the lifting platform 2 through the adjusting plate 51, and the adjusting plate 51 is connected to the lifting platform 2 through the adjusting component 9. Therefore, when the supporting cylinder 52 is squeezed by the steel frame 16, the horizontality of the adjusting plate 51 can be automatically adjusted to make the adjusting plate 51 flush with the square tube of the steel frame 16, so that the axis of the moving contact 3 is coaxial with the axis of the fixed contact 6. At this time, the extending of the connecting component 8 can ensure that the moving contact 3 and the fixed contact The head 6 is stably connected; after the positioning plate 4 completes the positioning, as the lifting platform 2 moves up, the positioning plate 4 slides on the connecting plate, and after the lifting platform 2 moves down, the positioning plate 4 is reset under the elastic force of the adjusting spring 56; the connecting assembly 8 includes a telescopic cylinder 82, the telescopic rod 54 is installed on the sliding block 81, the moving contact 3 is installed on the movable end of the telescopic rod 54, the telescopic cylinder 82 is provided with an air inlet 3 821, a pressure relief port 2 822, and an air inlet 4 823, the pressure relief port 2 822 is provided with a pressure relief valve 2 83, the air inlet 3 821 is connected to the connecting pipe 58, and the air inlet 4 823 is provided with a one-way valve 84; when the gas enters the adjusting cylinder 59, due to the setting of the pressure relief valve 2 83 at the pressure relief port 2 822, it is necessary to adjust the internal air pressure of the cylinder 59 to pressurize the pressure relief valve 2 83 When the pressure reaches the set value, the telescopic cylinder 82 can be pushed to extend and retract. Therefore, when the gas enters the supporting cylinder 52, the supporting cylinder 52 moves while the telescopic cylinder 82 cannot move. At this time, the positioning plate 4 performs the positioning operation first. After the positioning plate 4 cooperates with the insulator 7, the movement of the adjusting cylinder 59 is restricted. At this time, the internal air pressure is low, so the gas enters the telescopic cylinder 82 from the air inlet 3 821 along the connecting pipe, and pushes the telescopic cylinder 82 to move upward, thereby completing the connection between the moving contact 3 and the fixed contact 6. In this way, the connecting component 8 can not only realize the connection between the moving contact 3 and the fixed contact 6, but also avoid the problem that when the telescopic cylinder 82 has not completed the positioning, the telescopic cylinder 82 is extended first, resulting in the horizontal height of the moving contact 3 being greater than the horizontal height of the fixed contact 6, thereby causing the fixed contact 6 and the moving contact 3 to be unable to connect.A pressure relief port 524 is provided on the support cylinder 52, and a pressure relief valve 17 is provided on the pressure relief port 524, and the pressure of the pressure relief valve 17 is 0.1 mp greater than the pressure of the pressure relief valve 83; when the telescopic cylinder 82 is fully extended, the lifting platform 2 continues to move, which will cause the internal air pressure of the support cylinder 52 to continue to increase. When the internal pressure of the support cylinder 52 is greater than the pressure setting value of the pressure relief valve 17, the gas can be discharged through the pressure relief port 524 to avoid damage to the pressure system caused by excessive air pressure; protruding slide rails 13 are provided on the adjustment plate 51 and the sliding table 53, and the sliding plate and the sliding block 81 are slidably installed on the two slide rails 13 respectively, and the upper part of the slide rail 13 is arc-shaped; the slide rail 13 is convexly arranged, and the upper surface of the slide rail 13 is arc-shaped. When ice cubes on the insulator 7 fall, it can prevent the ice cubes from remaining on the slide rail 13, causing the sliding table 53 or the sliding block 81 to be stuck. Affects the connection between the moving contact 3 and the fixed contact 6; the positioning plate 4 includes an arc portion 41 and a guide portion 42, the arc portion 41 is an arc shape that matches the insulator 7, the arc portion 41 is slidably connected to the connecting rod 55, the guide portion 42 is straight and is arranged on both sides of the arc portion 41, and the straight portion is tangent to the arc portion 41; the arc portion 41 is used to further position the moving contact 3, and the guide portion 42 expands to both sides of the arc portion 41, which can increase the width of the positioning plate 4 in the radial direction without increasing the width of the positioning plate 4 in the axial direction, so when the lifting platform 2 rises, the positioning plate 4 can avoid interference with the insulator 7, and increase the adjustment range of the moving contact 3. After the adjustment cylinder 59 is retracted, the positioning plates 4 have a larger range of movement, so when the lifting platform 2 rises, the positioning plate 4 and the fixed contact 6 are prevented from having active interference, making it more convenient for the staff to operate. ;

[0042] The adjustment assembly 9 includes two horizontal cylinders 91, and the two horizontal cylinders 91 are respectively arranged under the two supporting cylinders 52. One end of the horizontal cylinder 91 is fixedly connected to the lifting platform 2, and the other end is spherically hinged with an adjustment block 92. The adjustment block 92 is slidably connected to the adjustment plate 51. The horizontal cylinder 91 is provided with a connecting port 911, an exhaust port 912, and an adjustment port 913. The supporting cylinder 52 is connected to the connecting port 911 of the horizontal cylinder 91 on the other side, and the exhaust port 912 is connected to the connecting pipe. When the piston inside the horizontal cylinder 91 moves to the top of the horizontal cylinder 91, the exhaust port 912 and the connecting port 911 are blocked. A return spring 521 is installed inside the supporting cylinder 52, the horizontal cylinder 91, and the adjusting cylinder 59. The air inlet 593, the air inlet 593 and the air inlet 823 are all provided with a one-way valve 84; when the lifting platform 2 is tilted due to ground reasons and is lifted, the support cylinder 52 on one side contacts the steel frame 16 and is squeezed first. During the squeezing process, the support cylinder 52 begins to be in point contact with the steel frame 16. As the lifting platform 2 rises, the support cylinder 52 is squeezed, thereby driving the adjustment plate 51 to rotate, so that the contact mode between the support plate and the steel frame 16 becomes line contact. Since the air outlet 523 of the support cylinder 52 is connected with the connecting port 911 of another horizontal cylinder 91, the exhaust port 912 is connected with the connecting pipe, and the piston inside the horizontal cylinder 91 moves to the top of the horizontal cylinder 91 to block the exhaust port 912 and the connecting port 9 11. The connecting port 911 and the exhaust port 912 of the horizontal cylinder 91 on the side not squeezed are both in a closed state. At this time, the supporting cylinder 52 on the squeezed side cannot be compressed, thereby squeezing the gas inside the horizontal cylinder 91, causing the horizontal cylinder 91 to shrink and discharge the gas from the adjusting port 913, thereby adjusting the inclination angle of the adjusting plate 51. During the adjustment process, the adjusting block 92 slides along the lower surface of the adjusting plate 51. After the adjustment process of the adjusting plate 51 is completed, the supporting cylinder 52 on the other side fits with the steel frame 16. At this time, the two supporting cylinders 52 are squeezed at the same time. At this time, both the horizontal cylinders 91 are squeezed, the two connecting ports 911 and the exhaust port 912 are both opened, and both the supporting cylinders 52 can be exhausted, thereby achieving simultaneous The adjusting plate 51 is compressed step by step, so that the adjusting plate 51 is flush with the square tube of the steel frame 16, so that the moving contact 3 and the fixed contact 6 are both in a vertical state, thereby ensuring the stable connection between the moving contact 3 and the fixed contact 6; when the horizontal cylinder 91 on one side is squeezed, the horizontal cylinder 91 needs to inhale, and at this time, the gas enters from the one-way valve 84 of the air inlet 593, and enters the horizontal cylinder 91 from the exhaust port 912 along the connecting pipe, thereby preventing the supporting cylinder 52 from shrinking due to negative pressure, thereby preventing the adjusting plate 51 from being unable to be flush with the steel frame 16; a plurality of limit grooves 10 are evenly distributed on the piston rod of the horizontal cylinder 91, and a locking channel 11 is opened on the inner wall of the horizontal cylinder 91, and a locking pin 12 that cooperates with the limit groove 10 is elastically connected inside the locking channel 11;When the air pressure inside the adjusting cylinder 59 increases, the air pressure inside the horizontal cylinder 91 also increases. At this time, the air pressure pushes the locking pin 12 to insert into the limiting groove 10, thereby limiting the up and down movement of the horizontal cylinder 91. That is, after the angle adjustment of the adjusting plate 51 is completed, the horizontal cylinder 91 can be locked to prevent the horizontal cylinder 91 from moving under pressure fluctuations or vibrations, thereby ensuring that the moving contact 3 is aligned with the fixed contact 6, ensuring that the contacts can be stably connected, and ensuring the stability of the connection between the moving contact 3 and the fixed contact 6; a mounting plate 14 is provided above the support cylinder 52, and one side of the mounting plate 14 close to the telescopic cylinder 82 is tangent to the side wall of the support cylinder 52, and the other side protrudes from the side wall of the support cylinder 52, and a plurality of ice-breaking spikes 15 are evenly arranged on the mounting plate 14, and the ice-breaking spikes 15 are elastically connected to the mounting plate 14; the provision of the ice-breaking spikes 15 can prevent the transmission tower from being damaged. The condensed ice affects the positioning of the positioning assembly 5, and the ice-breaking spikes 15 are elastically connected to the support cylinder 52, and the ice-breaking spikes 15 can be ejected after de-icing, so that part of the ice-breaking spikes 15 protrude from the bottom of the square tube of the steel frame 16, and then through the restriction of the ice-breaking spikes 15, the lifting platform 2 is prevented from shaking the moving contact 3 due to the swing of the blow, thereby preventing the shaking of the moving contact 3 from causing poor contact between the contacts, and the setting of the mounting plate 14 can increase the contact area between the support cylinder 52 and the steel frame 16, which can improve the stability of the operation of the isolating switch, and the side of the mounting plate 14 close to the telescopic cylinder 82 is tangent to the side wall of the support cylinder 52, and the other side protrudes from the side wall of the support cylinder 52, so that the support plate can extend out of the side wall of the square tube of the steel frame 16, so that the ice-breaking spikes 15 can limit the horizontal displacement of the support cylinder 52, thereby improving the stability of the operation of the isolating switch. ;

[0043] Working principle: When in use, the moving contact 3 is moved to the bottom of the fixed contact 6 through the moving platform 1, and the lifting platform 2 can be started at this time to drive the moving contact 3 to move upward. When the lifting platform 2 tilts and rises, the support cylinder 52 on one side first contacts the steel frame 16. The support cylinder 52 begins to make point contact with the steel frame 16. As the lifting platform 2 rises, the support cylinder 52 is squeezed, thereby driving the adjustment plate 51 to rotate, so that the contact mode between the support plate and the steel frame 16 becomes line contact, and the exhaust port 912 and the connecting port 911 of the horizontal cylinder 91 on the side that is not squeezed are in a closed state, and the support cylinder 52 on the squeezed side cannot be compressed. At this time, the horizontal cylinder 91 on this side is The horizontal cylinder 91 on this side inhales air from the air inlet 593, and exhausts air from the adjusting port 913, thereby realizing the extrusion of the horizontal cylinder 91, and will not attract the support cylinder 52 on the other side to move downward. When the two support cylinders 52 are squeezed, the adjusting plate 51 and the steel frame 16 are in a flush state, so that the moving contact 3 is perpendicular to the lower surface of the steel frame 16. At this time, the two support cylinders 52 are squeezed, so that the two connecting ports 911 and the exhaust port 912 are opened, and the two support cylinders 52 can be exhausted. At this time, the internal gas of the support cylinder 52 enters the horizontal cylinder 91 through the connecting port 911, and then enters the connecting pipe along the exhaust port 912, and passes through The second air inlet 591 enters the inside of the adjusting cylinder 59, and the gas pushes the adjusting cylinder 59 to move. At this time, the adjusting cylinder 59 pushes the sliding table 53, so that the sliding table 53 moves in the axial direction of the adjusting cylinder 59. When the arc surface on the positioning plate 4 contacts the insulator 7, the adjusting cylinder 59 drives the sliding block 81 to move in a direction perpendicular to the axial direction of the adjusting cylinder 59. When the arc surface of the positioning plate 4 is fully matched with the insulator 7, the positioning plate 4 cannot move. When the two positioning plates 4 and the insulator 7 are overlapped, the moving contact 3 moves to the bottom of the fixed contact 6. However, due to the restriction of the insulator 7, the adjusting cylinder 59 cannot move, thereby increasing the air pressure inside the adjusting cylinder 59. At this time, the air pressure inside the horizontal cylinder 91 increases, and the air pressure pushes the lock pin 12 to get stuck in the limit groove 10, thereby limiting the movement of the horizontal cylinder 91, so that the adjustment plate 51 maintains the tilt angle. As the pressure increases, the telescopic rod 54 extends to push the moving contact 3 to connect with the fixed contact 6. After the moving contact 3 is connected with the positioning head, the lifting platform 2 continues to rise. At this time, the telescopic cylinder 82 cannot be exhausted, and the air pressure inside the supporting cylinder 52 increases. At this time, the gas is exhausted from the pressure relief port 822. By observing the connection status, the lifting platform 2 can be stopped from rising. At this time, the moving contact 3 is connected with the fixed contact 6, and then DC ice melting can be carried out.

[0044] After completing the DC ice melting work, the lifting platform 2 moves downward, the supporting cylinder 52 and the horizontal cylinder 91 lose their extrusion and are reset under the action of the reset spring 521, and the internal air pressure of the adjusting cylinder 59 decreases. At this time, it can also be reset under the action of the reset spring 521, and the telescopic cylinder 82 begins to reset under the negative pressure state.

[0045] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A high voltage mobile isolating switch, characterized in that: The invention comprises a moving platform (1), a lifting platform (2), and a moving contact (3). The lifting platform (2) is arranged on the moving platform (1), and the moving contact (3) is movably mounted on the lifting platform (2). A positioning plate (4) having an arc surface is provided on the lifting platform (2), and the positioning plate (4) is connected to the moving contact (3) through a positioning component (5). The positioning component (5) relies on the lifting power of the lifting platform (2) to make the arc surface of the positioning plate (4) cooperate with the insulator (7) of the fixed contact (6) to adjust the position of the moving contact (3). The lifting platform (2) is provided with a connecting component (8), and the connecting component (8) connects the moving contact (3) with the fixed contact (6) through the lifting power of the lifting platform (2).

2. A high voltage mobile isolating switch according to claim 1, characterized in that: The positioning assembly (5) comprises an adjusting plate (51), a supporting cylinder (52), and a sliding platform (53). The adjusting plate (51) is mounted on the lifting platform (2) through an adjusting assembly (9). The connecting assembly (8) is provided with a sliding block (81). The sliding platform (53) is slidably mounted on the adjusting plate (51). The sliding block (81) is slidably mounted on the sliding platform (53), and the sliding direction of the sliding block (81) is perpendicular to the sliding direction of the sliding platform (53). The moving contact (3) is arranged on the sliding block (81). Two supporting cylinders (52) and two adjusting cylinders (59) are arranged on the adjusting plate (51), and the two supporting cylinders (52) and the two adjusting cylinders (59) are symmetrically arranged on both sides of the adjusting plate (51). Telescopic rods (54) are arranged on both sides of the sliding block (81), and a connecting rod (55) is connected to the telescopic rod (54). The positioning plate (4) is slidably mounted on the connecting rod (55), and an adjusting spring (56) is connected between the positioning plate (4) and the connecting rod (55). A sliding groove (551) is provided on the two connecting rods (55), and a connecting block (57) is slidably mounted inside the sliding groove (551). The output ends of the two adjusting cylinders (59) are respectively mounted on the two connecting blocks (57). The supporting cylinder (52) is provided with an air inlet and an air outlet 1 (523). The adjusting cylinder (59) is provided with an air inlet 2 (591) and an air outlet 2 (592). The air outlet 1 (523) is connected to the air inlet 2 (591), and the two air inlets 2 (591) are connected through a connecting pipe (58). A reset spring (521) is provided inside the supporting cylinder (52) and the adjusting cylinder (59), and the connecting pipe (58) is connected to the connecting assembly (8).

3. A high voltage mobile isolating switch according to claim 2, characterized in that: The connecting assembly (8) comprises a telescopic cylinder (82), the telescopic rod (54) is mounted on a sliding block (81), the moving contact (3) is mounted on the movable end of the telescopic rod (54), a pressure relief port (822) is provided on the supporting cylinder (52), a pressure relief valve (83) is installed at one of the pressure relief ports (822), an air inlet port (3) (821), a pressure relief port (822) (2), and an air inlet port (4) (823) are provided on the telescopic cylinder (82), a pressure relief valve (83) (2) is installed at the pressure relief port (822), the air inlet port (822) (2) is connected to the connecting pipe (58), a one-way valve (84) is installed at the air inlet port (4) (823), and a set pressure of the pressure relief valve (83) (1) is greater than a set pressure of the pressure relief valve (83) (2).

4. A high voltage mobile isolating switch according to claim 3, characterized in that: The adjustment assembly (9) comprises two horizontal cylinders (91), the two horizontal cylinders (91) are respectively arranged below the two supporting cylinders (52), one end of the horizontal cylinder (91) is fixedly connected to the lifting platform (2), and the other end is spherically hinged with an adjustment block (92), the adjustment block (92) is slidably connected to the adjustment plate (51), the horizontal cylinder (91) is provided with a communication port (911), an exhaust port (912), and an adjustment port (913), and the supporting cylinder (52) is connected to the horizontal cylinder (91) on the other side. ) is connected to the connecting port (911) of the support cylinder (52), the exhaust port (912) is connected to the connecting pipe, the exhaust port (912) and the connecting port (911) are blocked when the piston inside the horizontal cylinder (91) moves to the top of the horizontal cylinder (91), the support cylinder (52), the horizontal cylinder (91) and the adjusting cylinder (59) are all installed with a return spring (521), the adjusting cylinder (59) is provided with an air intake port (593), and the air intake port (593) and the air inlet port (823) are both provided with a one-way valve (84).

5. A high voltage mobile isolating switch according to claim 4, characterized in that: A plurality of limit grooves (10) are evenly distributed on the piston rod of the horizontal cylinder (91), a locking channel (11) is provided on the inner wall of the horizontal cylinder (91), and a locking pin (12) cooperating with the limit groove (10) is elastically connected inside the locking channel (11).

6. A high voltage mobile isolating switch according to claim 2, characterized in that: The adjustment plate (51) and the sliding platform (53) are both provided with protruding slide rails (13), and the sliding plate and the sliding block (81) are respectively slidably mounted on the two slide rails (13), and the upper part of the slide rail (13) is in an arc shape.

7. A high voltage mobile isolating switch according to claim 2, characterized in that: A mounting plate is provided above the support cylinder (52); one side of the mounting plate close to the telescopic cylinder (82) is tangent to the side wall of the support cylinder (52), and the other side protrudes from the side wall of the support cylinder (52); a plurality of ice-breaking spikes (14) are evenly arranged on the mounting plate, and the ice-breaking spikes (14) are elastically connected to the mounting plate.

8. A high voltage mobile disconnector according to claim 1, characterized in that: The positioning plate (4) comprises an arc-shaped portion (41) and a guide portion (42); the arc-shaped portion (41) is in an arc shape that matches the insulator (7); the arc-shaped portion (41) is slidably connected to the connecting rod (55); the guide portion (42) is in a straight line shape and is arranged on both sides of the arc-shaped portion (41); and the straight line portion is tangent to the arc-shaped portion (41).

Images