A disconnector device for electric power engineering

Abstract

The present invention discloses a disconnector device for power engineering, specifically relating to the technical field of disconnectors. It includes a device main body, and the device main body includes a mounting base. Mounting holes are provided at the four corners of the mounting base. It further includes a switch part and a driving part. The switch part includes three first insulators and three second insulators. A first power connection plate and a second power connection plate are respectively provided at the tops of the first insulator and the second insulator. A rotating mechanism and a supporting mechanism are respectively provided on the first power connection plate and the second power connection plate. The driving part includes a rotating shaft. Three swing rods are provided on the rotating shaft. A third insulator is hinged on the swing rod, and the third insulator is hinged with the rotating mechanism. In the present invention, a spherical surface is provided on the fixed plate, and the end of the blade is in close fit with the spherical surface. An inclined plate and an elastic plate are also provided, which increases the contact area between the blade and the first power connection plate and the second power connection plate, can effectively disperse the heat generated when the current passes through, and thus significantly reduces the heat generation of the disconnector.

Description

Technical Field

[0001] The present invention relates to the technical field of isolating switches, and more specifically, to an isolating switch device for electric power engineering. Background Art

[0002] The isolating switch is a switching device that is mainly used for "isolating power supply, switching operation, connecting and disconnecting small current circuits" and has no arc extinguishing function. When the isolating switch is in the open position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when it is in the closed position, it is a switching device that can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. It is generally used as a high-voltage isolating switch, that is, an isolating switch with a rated voltage of more than 1kV. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, construction and safe operation of substations and power plants. The main feature of the isolating switch is that it has no arc extinguishing ability and can only open and close the circuit without load current.

[0003] High-voltage disconnectors are important switchgear in the electrical systems of power plants and substations, and must be used in conjunction with high-voltage circuit breakers. High-voltage disconnectors ensure the safety of high-voltage electrical appliances and devices during maintenance work and play the role of isolating voltage. The working principle and structure of high-voltage disconnectors are relatively simple, but due to their large usage and high working reliability, they have a great impact on the design, establishment and safe operation of power plants and substations. The existing high-voltage disconnectors have the problem that the knife is easy to open after closing, causing power outages. The consequences of an accidental power outage are very serious; at the same time, the existing high-voltage disconnectors have the problem of knife and contact wear each other when opening and closing.

[0004] For example, a Chinese patent with application number CN112164616A discloses a high-voltage disconnector, comprising: a base, a first insulator, a second insulator, an incoming contact, an outgoing contact, a knife, a self-locking hook and a locking plate; one end of the knife is connected to the support, the self-locking hook is arranged at the free end of the knife, the self-locking hook is provided with a hook body and an arc-shaped through groove, and the middle parts of two blades are connected by a first rotating shaft passing through the arc-shaped through groove; a first separation sleeve is provided on one side of the self-locking hook, a second separation sleeve is provided on the blade, the first separation sleeve and the second separation sleeve are provided on the second rotating shaft connecting the two blades, and the first rotating shaft is connected to the second rotating shaft through a torsion spring; spiral grooves matching each other are provided on the end surfaces of the first separation sleeve and the second separation sleeve, and when the two ends of the knife clamp the incoming contact and the outgoing contact, the hook body is hooked on the end of the locking plate; the self-locking hook is rotated, the first separation sleeve and the second separation sleeve are pressed against each other, so that the knife is separated from the incoming contact and the outgoing contact, and the hook body is separated from the locking plate.

[0005] However, the contact area between the knife switch and the contact in this patent is small, resulting in large material consumption and low power transmission efficiency, which may cause overheating and premature failure.

[0006] Therefore, the present invention proposes a disconnecting switch device for power engineering to solve the above problems. Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a disconnecting switch device for power engineering, which solves the problems raised in the above-mentioned background technology by setting a switch part and a driving part.

[0008] To achieve the above object, the present invention provides the following technical solution: A disconnecting switch device for power engineering, comprising:

[0009] The device main body, the device main body includes a mounting seat, and mounting holes are provided at the four corners of the mounting seat. The plurality of mounting holes are used to fix the mounting seat on the existing supporting equipment;

[0010] The switch part, the switch part includes three first insulators and three second insulators. The plurality of first insulators and second insulators are evenly arranged on both sides of the mounting seat. The first insulators and second insulators are used to isolate the mounting seat from high-voltage electricity. A first connection plate and a second connection plate are respectively provided at the tops of the first insulator and the second insulator. A rotating mechanism is provided on the first connection plate, and a supporting mechanism capable of contacting the rotating mechanism is provided on the second connection plate. When the rotating mechanism contacts the supporting mechanism, the disconnecting switch closes;

[0011] The driving part, the driving part includes a rotating shaft provided in the middle of the mounting seat. Three swing rods corresponding to the rotating mechanism one by one are provided on the rotating shaft. The free end of the swing rod is hinged with a third insulator, and the free end of the third insulator is hinged with the rotating mechanism on the corresponding side. The third insulator is used to drive the rotating mechanism to rotate.

[0012] Preferably, the rotating mechanism includes a fixing plate provided on the first connection plate. Both end faces of the fixing plate are spherical surfaces. A pin shaft passing through the centers of the two spherical surfaces is provided on the fixing plate. Knife blades are provided at both ends of the pin shaft. The end of the knife blade close to the fixing plate can cooperate with the spherical surface, and the spherical surface can increase the contact area between the knife blade and the fixing plate. A connecting block is provided between the two knife blades, and the connecting block is used to connect the two knife blades into a whole.

[0013] Preferably, the supporting mechanism includes a flat plate fixed to the second connection plate. Two symmetrically distributed elastic plates are provided on the flat plate. The distance between the two elastic plates gradually decreases in the direction of the flat plate. An inclined plate cooperating with the elastic plate is provided at the free end of the knife blade. When the inclined plate contacts the elastic plate, the disconnecting switch closes.

[0014] Preferably, one end of the rotating shaft extends out of the mounting seat and is provided with a driving mechanism. The driving mechanism includes a turntable. A plurality of through holes are formed in the turntable and are evenly distributed along the circumferential direction of the rotating shaft. A handle is provided on the turntable. Two fixing bolts passing through the through holes are provided between the turntable and the handle. The two fixing bolts are symmetrically distributed and are used to adjust the initial angle between the handle and the horizontal plane.

[0015] Preferably, a pressing mechanism is provided between the flat plate and the elastic plate. The pressing mechanism includes a pressing bolt threadedly connected to the flat plate. The top of the pressing bolt is rotatably connected to a rotating cylinder. A pressing plate is provided at the top of the rotating cylinder. The pressing plate is in contact with the outer surface of the corresponding elastic plate.

[0016] Preferably, two symmetrically distributed relief grooves are formed in the mounting seat. One side of each relief groove is detachably connected with a support plate. The rotating shaft passes through the two relief grooves and is inserted on the two support plates. The relief grooves are used for the disassembly and installation of the driving part.

[0017] Preferably, two symmetrically distributed anti - detachment plates are provided on the rotating shaft. The width of the anti - detachment plate is greater than the width of the relief groove. The anti - detachment plate is in contact with the side wall of the mounting seat. The anti - detachment plate is used to prevent the rotating shaft from detaching from the support plate.

[0018] Preferably, two symmetrically distributed self - locking mechanisms are provided between the rotating shaft and the mounting seat. The self - locking mechanism includes a pull rod provided on the rotating shaft. A swingable sleeve is provided on the mounting seat. A stepped rod is movably connected in the sleeve. One end of the stepped rod is hinged to the free end of the corresponding pull rod. A stepped plate is provided at the other end of the stepped rod. An elastic member is sleeved on the stepped rod between its stepped end and the sleeve.

[0019] Preferably, connecting bolts are provided at the horizontal ends of the first power - receiving plate and the second power - receiving plate. The connecting bolts are used to connect the first power - receiving plate and the second power - receiving plate to the circuit.

[0020] Preferably, a reinforcing plate is provided at the connection between the flat plate and the elastic plate. The reinforcing plate is used to increase the connection strength between the flat plate and the elastic plate.

[0021] The technical effects and advantages of the present invention:

[0022] 1. The present invention sets a spherical surface on the fixed plate, which can make the end of the gate blade fit closely with the spherical surface, increase the contact area between the gate blade and the fixed plate, and further, indirectly increase the contact area between the gate blade and the first power connection plate. In addition, the present invention also sets an inclined plate and an elastic plate. The inclined plate is set at the free end of the gate blade, and the elastic plate is fixed on the second power connection plate. This design can increase the contact area between the gate blade and the second power connection plate in disguise. This design of increasing the contact area can effectively disperse the heat generated when the current passes through, thereby significantly reducing the heat generated by the disconnector, which is conducive to the smooth transmission of the current, thereby greatly improving the reliability of the disconnector.

[0023] 2. The device body of the present invention includes a mounting seat and mounting holes at its four corners, which can be conveniently fixed on the existing supporting equipment to achieve stable installation of the device. The clearance groove on the mounting seat and the detachable support plate design not only facilitate the disassembly and installation of the drive unit, but also improve the maintenance convenience of the device.

[0024] 3. The driving part provided in the present invention realizes the driving of the rotating mechanism through the rocker arm and the third insulator provided on the rotating shaft. The driving mechanism is provided on the rotating shaft, including a turntable, a through hole, a handle and a fixing bolt, which is not only convenient for the operator to control, but also adapts to the needs of different operating environments by adjusting the initial angle between the handle and the horizontal plane. The self-locking mechanism provided between the rotating shaft and the mounting seat realizes the locking of the rotating shaft at a specific position through the cooperation of the pull rod, sleeve, step rod and elastic member, avoiding the accidental closing or opening of the switch due to accidental operation. It not only improves the safety of the equipment, but also ensures the stability and accuracy of the operation.

[0025] 4. The present invention sets a pressure mechanism between the flat plate and the elastic plate. Through the cooperation of the pressure bolt, the rotating drum and the pressure plate, the pressure adjustment of the elastic plate is realized, ensuring the close cooperation between the gate blade and the elastic plate. At the same time, the design of the reinforcing plate increases the connection strength between the flat plate and the elastic plate, and improves the overall stability of the supporting mechanism. In addition, the anti-slip plate set on the rotating shaft effectively avoids the separation of the rotating shaft and the supporting plate, ensuring the stable operation of the driving part. It not only improves the overall performance of the equipment, reduces wear, but also extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a top view of the device body and the driving part in the bottom view of the overall structure of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the switch part in the present invention.

[0029] Figure 4 This is a sectional view of the switch part in the present invention.

[0030] Figure 5 This is an exploded view of the switch part in the present invention.

[0031] Figure 6 This is a sectional view of the rotating mechanism in the present invention.

[0032] Figure 7 This is a sectional view of the supporting mechanism in the present invention.

[0033] Figure 8 This is a top view of the brake blade in the present invention.

[0034] Figure 9 This is a sectional view of the overall structure of the present invention.

[0035] Figure 10 This is a schematic structural diagram of the driving mechanism in the present invention.

[0036] The reference numerals are as follows:

[0037] 1. Equipment main body; 101. Mounting base; 102. Mounting hole;

[0038] 2. Switch part; 201. First insulator; 202. Second insulator; 203. First power connection board; 204. Second power connection board; 205. Rotating mechanism; 206. Supporting mechanism;

[0039] 2051. Fixed plate; 2052. Pin shaft; 2053. Brake blade; 2054. Connection block;

[0040] 2061. Flat plate; 2062. Elastic plate; 2063. Inclined plate;

[0041] 3. Driving part; 301. Rotating shaft; 302. Swing rod; 303. Third insulator; 304. Driving mechanism;

[0042] 3041. Turntable; 3042. Through hole; 3043. Handle; 3044. Fixed bolt;

[0043] 4. Pressing mechanism; 401. Pressing bolt; 402. Rotating cylinder; 403. Pressing plate;

[0044] 5. Relief groove;

[0045] 6. Support plate;

[0046] 7. Anti - detachment plate;

[0047] 8. Self - locking mechanism; 801. Pull rod; 802. Sleeve; 803. Step rod; 804. Step plate; 805. Elastic member;

[0048] 9. Connecting bolt;

[0049] 10. Reinforcing plate. Specific embodiments

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment 1

[0052] Please refer to Figures 1 to 10 As shown, the disconnector device for power engineering in the embodiment of the present invention includes a device main body 1. The device main body 1 includes a mounting base 101. Mounting holes 102 are provided at the four corners of the mounting base 101. The plurality of mounting holes 102 are used to fix the mounting base 101 on the existing support device. It also includes a switch part 2 and a driving part 3.

[0053] Please refer to Figure 1 , Figure 3 and Figure 4 As shown, the switch part 2 includes three first insulators 201 and three second insulators 202. The plurality of first insulators 201 and second insulators 202 are evenly arranged on both sides of the mounting base 101. The first insulators 201 and second insulators 202 are used to isolate the mounting base 101 from high-voltage electricity. A first connection plate 203 and a second connection plate 204 are respectively provided at the tops of the first insulator 201 and the second insulator 202. A rotating mechanism 205 is provided on the first connection plate 203. A supporting mechanism 206 capable of contacting the rotating mechanism 205 is provided on the second connection plate 204. When the rotating mechanism 205 contacts the supporting mechanism 206, the disconnector is closed; in combination with Figure 2 As shown, the driving part 3 includes a rotating shaft 301 provided in the middle of the mounting base 101. Three swing rods 302 corresponding to the rotating mechanism 205 one by one are provided on the rotating shaft 301. The free end of the swing rod 302 is hinged with a third insulator 303. The free end of the third insulator 303 is hinged with the corresponding rotating mechanism 205. The third insulator 303 is used to drive the rotating mechanism 205 to rotate.

[0054] It should be noted that the first insulator 201, the second insulator 202 and the third insulator 303 are all prior arts and are made of insulating materials, and no detailed description thereof will be given here.

[0055] Please refer to Figure 3 , Figure 6 and Figure 8As shown, the rotating mechanism 205 includes a fixing plate 2051 disposed on the first power connection plate 203. Both end faces of the fixing plate 2051 are spherical surfaces. A pin shaft 2052 passing through the centers of the two spherical surfaces is provided on the fixing plate 2051. Gate blades 2053 are provided at both ends of the pin shaft 2052. One end of the gate blade 2053 close to the fixing plate 2051 can cooperate with the spherical surface, and the spherical surface can increase the contact area between the gate blade 2053 and the fixing plate 2051. A connecting block 2054 is provided between the two gate blades 2053, and the connecting block 2054 is used to connect the two gate blades 2053 into a whole.

[0056] Please refer to Figure 5 and Figure 7 As shown, the supporting mechanism 206 includes a flat plate 2061 fixed to the second power connection plate 204. Two symmetrically distributed elastic plates 2062 are provided on the flat plate 2061. The distance between the two elastic plates 2062 gradually decreases in the direction of the flat plate 2061. An inclined plate 2063 cooperating with the elastic plate 2062 is provided at the free end of the gate blade 2053. When the inclined plate 2063 contacts the elastic plate 2062, the disconnecting switch closes.

[0057] Please refer to Figure 2 and Figure 10 As shown, one end of the rotating shaft 301 extends out of the mounting base 101 and is provided with a driving mechanism 304. The driving mechanism 304 includes a turntable 3041. A plurality of through holes 3042 evenly distributed along the circumferential direction of the rotating shaft 301 are provided on the turntable 3041. A handle 3043 is provided on the turntable 3041. Two fixing bolts 3044 passing through the through holes 3042 are provided between the turntable 3041 and the handle 3043. The two fixing bolts 3044 are symmetrically distributed and are used to adjust the initial angle between the handle 3043 and the horizontal plane.

[0058] Please refer to Figure 7 and Figure 10 As shown, a pressurizing mechanism 4 is provided between the flat plate 2061 and the elastic plate 2062. The pressurizing mechanism 4 includes a pressurizing bolt 401 threadedly connected to the flat plate 2061. A rotating cylinder 402 is rotatably connected to the top of the pressurizing bolt 401. A pressurizing plate 403 is provided at the top of the rotating cylinder 402, and the pressurizing plate 403 is in contact with the outer surface of the corresponding elastic plate 2062.

[0059] Please refer to Figure 3 、 Figure 5 and Figure 7 As shown, connecting bolts 9 are provided at the horizontal ends of the first power connection plate 203 and the second power connection plate 204. The connecting bolts 9 are used to connect the first power connection plate 203 and the second power connection plate 204 to the circuit; a reinforcing plate 10 is provided at the connection between the flat plate 2061 and the elastic plate 2062, and the reinforcing plate 10 is used to increase the connection strength between the flat plate 2061 and the elastic plate 2062.

[0060] During use, in the initial state, the inclined plate 2063 on the blade 2053 is not in contact with the elastic plate 2062. The staff needs to cut off the power supply of the circuit first and install the equipment main body 1 on the existing supporting equipment. Specifically, bolts that match the size of the mounting holes 102 can be selected first. Use multiple bolts to pass through the multiple mounting holes 102 and fix the mounting seat 101 on the existing supporting equipment.

[0061] The staff needs to bring the line connectors on both sides into contact with the first power connection plate 203 and the second power connection plate 204 respectively, and then use the connecting bolts 9 to fix the line connectors on the first power connection plate 203 and the second power connection plate 204. After the line connectors are connected, the circuit is powered on. Since the inclined plate 2063 on the blade 2053 is not in contact with the elastic plate 2062, the circuits on both sides are in an open state at this time.

[0062] The staff needs to remove the fixing bolt 3044 on the turntable 3041 from the handle 3043, and then adjust the initial angle of the handle 3043 so that the handle 3043 can be pulled with the least effort. Then, pass the fixing bolt 3044 through the corresponding through hole 3042 so that the two fixing bolts 3044 are symmetrically distributed about the center, thereby fixing the handle 3043 and the turntable 3041 together again. When the handle 3043 swings, it will drive the turntable 3041 to rotate.

[0063] When the circuits on both sides need to be connected, the staff can use tools to pull down the handle 3043. The handle 3043 drives the turntable 3041 to rotate. The turntable 3041 drives the rotating shaft 301 to rotate. The rotating shaft 301 drives the three swing rods 302 to swing downward simultaneously. The swing rods 302 drive the corresponding third insulator 303 to move downward. The third insulator 303 pulls the corresponding blade 2053 to swing downward. The end of the blade 2053 always fits against the spherical surface on the fixed plate 2051. The spherical surface on the fixed plate 2051 can not only increase the contact area between the blade 2053 and the fixed plate 2051, which is equivalent to increasing the contact area between the blade 2053 and the first power connection plate 203 in effect, but also has no influence on the swing of the blade 2053.

[0064] The inclined plate 2063 moves downward along with the blade 2053. When the inclined plate 2063 comes into contact with the corresponding elastic plate 2062, the circuits on both sides are connected. The inclined plate 2063 and the elastic plate 2062 can also increase the contact area between the blade 2053 and the second power connection plate 204 in effect. After the circuit works normally, the contact areas between the blade 2053 and the first power connection plate 203 and the second power connection plate 204 are both increased, which increases the contact area between the moving contact and the fixed contact, can reduce the heat generation of the disconnecting switch, improve the reliability of the disconnecting switch, and extend its service life.

[0065] When the disconnecting switch needs to be disconnected, the staff can use a tool to drive the handle 3043 to swing upward. The handle 3043 drives the rotating shaft 301 to rotate through the turntable 3041. The rotating shaft 301 drives multiple swing rods 302 to swing upward. The swing rods 302 drive the third insulator 303 to move upward. The third insulator 303 drives the blade 2053 on the corresponding side to swing upward. The inclined plate 2063 moves upward along with the blade 2053 and separates from the elastic plate 2062, disconnecting the lines on both sides.

[0066] When the contact effect between the elastic plate 2062 and the inclined plate 2063 is not good, the staff can first disconnect the disconnecting switch, and then rotate the pressure bolt 401. The pressure bolt 401 drives the pressure plate 403 fixed to the rotating cylinder 402 to move up and down, thereby adjusting the included angle between the elastic plate 2062 and the flat plate 2061, so that the elastic plate 2062 can better adapt to the inclined plate 2063.

[0067] Embodiment 2

[0068] In actual use, it is found that due to the lack of a limiting structure for the blade 2053, when the disconnecting switch is opened, the blade 2053 is likely to swing downward under the action of gravity, resulting in misclosing and causing dangerous situations. When the inclined plate 2063 contacts the elastic plate 2062, due to the lack of additional downward pressure, the contact effect between the inclined plate 2063 and the elastic plate 2062 is not good, easily causing misopening. Based on the above embodiments, further improvements are made.

[0069] Please refer to Figure 2 and Figure 9 As shown, two symmetrically distributed self-locking mechanisms 8 are provided between the rotating shaft 301 and the mounting seat 101. The self-locking mechanism 8 includes a pull rod 801 provided on the rotating shaft 301. A swingable sleeve 802 is provided on the mounting seat 101. A stepped rod 803 is movably connected inside the sleeve 802. One end of the stepped rod 803 is hinged to the free end of the corresponding pull rod 801. A stepped plate 804 is provided at the other end of the stepped rod 803. An elastic member 805 is sleeved on the stepped rod 803 between its stepped end and the sleeve 802.

[0070] Specifically, there are two states between the pull rod 801 and the stepped rod 803. When the disconnecting switch is closed, the acute angle formed by the pull rod 801 and the stepped rod 803 opens upward. When the disconnecting switch is opened, the acute angle formed by the pull rod 801 and the stepped rod 803 opens downward.

[0071] Based on the above embodiments, during use, in the initial state, the disconnecting switch is in the open state. The acute angle formed between the pull rod 801 and the stepped rod 803 faces downward. The elastic member 805 always exerts a certain initial elastic force on the stepped rod 803, causing the pull rod 801 and the stepped rod 803 to maintain their current state without external forces. When the rotating shaft 301 drives the pull rod 801 to swing, it needs to overcome the elastic force of the elastic member 805, which can prevent the blade 2053 from automatically swinging downward under the action of gravity and avoid misclosing.

[0072] When the disconnecting switch needs to be closed, the handle 3043 drives the rotating shaft 301 to rotate through the turntable 3041. The rotating shaft 301 drives the pull rod 801 to swing downward. When the pull rod 801 swings downward, it will first squeeze the stepped rod 803, causing the stepped rod 803 to slide relative to the sleeve 802. The distance between the stepped portion of the stepped rod 803 and the sleeve 802 gradually decreases, and the elastic member 805 is squeezed. Then the pull rod 801 continues to swing downward, and the elastic member 805 returns to its initial length. After the disconnecting switch is closed, the acute angle formed between the pull rod 801 and the stepped rod 803 becomes upward-facing. The elastic force of the elastic member 805 causes the pull rod 801 to have a tendency to continue swinging downward, and finally acts on the inclined plate 2063 on the blade 2053, exerting a downward pressure on the inclined plate 2063 to achieve a better contact effect between the inclined plate 2063 and the elastic plate 2062 and avoid misopening.

[0073] Embodiment Three

[0074] During actual use, it is found that when the components related to the rotating shaft 301 in the disconnecting switch are damaged after long-term use, since the rotating shaft 301 is directly rotatably connected to the mounting seat 101, it is very troublesome, time-consuming and laborious to disassemble the rotating shaft 301 from the mounting seat 101, and the same problem will be encountered during installation. Further improvements are made based on the above embodiments.

[0075] Please refer to Figure 1 and Figure 2 As shown, two symmetrically distributed relief grooves 5 are formed on the mounting seat 101. One side of each relief groove 5 is detachably connected with a support plate 6. The rotating shaft 301 passes through the two relief grooves 5 and is inserted on the two support plates 6. The relief grooves 5 are used for the disassembly and installation of the driving part 3.

[0076] Please refer to Figure 2 As shown, two symmetrically distributed anti-disengagement plates 7 are provided on the rotating shaft 301. The width of the anti-disengagement plate 7 is greater than the width of the relief groove 5. The anti-disengagement plate 7 is in contact with the side wall of the mounting seat 101. The anti-disengagement plate 7 is used to prevent the rotating shaft 301 from disengaging from the support plate 6.

[0077] On the basis of the above embodiments, when it is necessary to disassemble the rotating shaft 301 in case of special circumstances, the staff first makes the disconnector in the open state, and then removes the support plate 6 on the mounting seat 101, so that the rotating shaft 301 can be taken out from the two relief grooves 5, and the components on the rotating shaft 301 can be inspected and repaired.

[0078] After the inspection and repair are completed, the staff can put the rotating shaft 301 back into the two relief grooves 5, so that the anti-disengagement plate 7 contacts the inner wall of the mounting seat 101. Since the width of the anti-disengagement plate 7 is greater than the width of the relief groove 5, the rotating shaft 301 will not move laterally. At this time, the two support plates 6 can be fixed to the mounting seat 101 again to complete the installation of the rotating shaft 301. The settings of the support plate 6 and the relief groove 5 bring convenience to the maintenance of the staff.

[0079] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A power engineering isolating switch device, characterized in that: The power engineering isolating switch device comprises: A device body (1), the device body (1) comprising a mounting seat (101), and mounting holes (102) are provided at four corners of the mounting seat (101); A switch part (2), the switch part (2) comprising three first insulators (201) and three second insulators (202), the plurality of first insulators (201) and second insulators (202) being evenly arranged on both sides of a mounting seat (101), a first power connection plate (203) and a second power connection plate (204) being respectively arranged on the tops of the first insulators (201) and the second insulators (202), the first power connection plate (203) being provided with a rotating mechanism (205), the second power connection plate (204) being provided with a supporting mechanism (206) capable of contacting the rotating mechanism (205), and the isolating switch being closed when the rotating mechanism (205) contacts the supporting mechanism (206); A driving part (3), the driving part (3) comprising a rotating shaft (301) arranged in the middle of the mounting seat (101), the rotating shaft (301) being provided with three swing rods (302) corresponding one to one with the rotating mechanisms (205), the free ends of the swing rods (302) being hingedly connected to third insulators (303), the free ends of the third insulators (303) being hingedly connected to the rotating mechanisms (205) on the corresponding sides; The rotating mechanism (205) comprises a fixed plate (2051) arranged on the first power connection plate (203); both end surfaces of the fixed plate (2051) are spherical curved surfaces; a pin shaft (2052) passing through the centers of the two spherical curved surfaces is provided on the fixed plate (2051); both ends of the pin shaft (2052) are provided with gate blades (2053); an end of the gate blade (2053) close to the fixed plate (2051) is capable of cooperating with the spherical curved surface; and a connecting block (2054) is provided between the two gate blades (2053); The supporting mechanism (206) comprises a flat plate (2061) fixed to the second power connection plate (204); two symmetrically distributed elastic plates (2062) are provided on the flat plate (2061); the distance between the two elastic plates (2062) gradually decreases towards the flat plate (2061); a slanted plate (2063) cooperating with the elastic plate (2062) is provided at the free end of the switch blade (2053); when the slanted plate (2063) contacts the elastic plate (2062), the isolating switch is closed.

2. The power engineering isolating switch device according to claim 1, characterized in that: One end of the rotating shaft (301) extends out of the mounting seat (101) and is provided with a driving mechanism (304), the driving mechanism (304) comprising a rotating disk (3041), the rotating disk (3041) being provided with a plurality of through holes (3042) evenly distributed along the circumferential direction of the rotating shaft (301), the rotating disk (3041) being provided with a handle (3043), two fixing bolts (3044) passing through the through holes (3042) are provided between the rotating disk (3041) and the handle (3043), and the two fixing bolts (3044) are symmetrically distributed.

3. The power engineering isolating switch device according to claim 2, characterized in that: A pressure mechanism (4) is provided between the flat plate (2061) and the elastic plate (2062), the pressure mechanism (4) comprising a pressure bolt (401) threadedly connected to the flat plate (2061), the top of the pressure bolt (401) being rotatably connected to a rotating drum (402), the top of the rotating drum (402) being provided with a pressure plate (403), and the outer surface of the elastic plate (2062) on the corresponding side of the pressure plate (403) being kept in contact.

4. The power engineering isolating switch device according to claim 3, characterized in that: The mounting seat (101) is provided with two symmetrically distributed clearance grooves (5), one side of each of the clearance grooves (5) is detachably connected to a support plate (6), and the rotating shaft (301) passes through the two clearance grooves (5) and is plugged into the two support plates (6).

5. The power engineering isolating switch device according to claim 4, characterized in that: The rotating shaft (301) is provided with two symmetrically distributed anti-slip plates (7), the width of the anti-slip plates (7) being greater than the width of the clearance groove (5), and the anti-slip plates (7) being in contact with the side wall of the mounting seat (101).

6. The power engineering isolating switch device according to claim 5, characterized in that: Two symmetrically distributed self-locking mechanisms (8) are provided between the rotating shaft (301) and the mounting seat (101), the self-locking mechanism (8) comprising a pull rod (801) arranged on the rotating shaft (301), the mounting seat (101) being provided with a sleeve (802) capable of swinging up and down, a step rod (803) being movably connected inside the sleeve (802), one end of the step rod (803) being hinged to the free end of the pull rod (801) on the corresponding side, the other end of the step rod (803) being provided with a step plate (804), and an elastic member (805) being sleeved on the step rod (803) and located between the step end thereof and the sleeve (802).

7. The power engineering isolating switch device according to claim 6, characterized in that: The horizontal ends of the first power connection plate (203) and the second power connection plate (204) are both provided with connecting bolts (9).

8. The power engineering isolating switch device according to claim 7, characterized in that: A reinforcing plate (10) is provided at the connection between the flat plate (2061) and the elastic plate (2062).

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