Electric power engineering isolation switch device

Abstract

The invention discloses an electric power engineering isolation switch device, and particularly relates to the technical field of isolation switches, the electric power engineering isolation switch device comprises an equipment main body, the equipment main body comprises a mounting seat, mounting holes are formed in four corners of the mounting seat, the equipment main body further comprises a switch part and a driving part, and the switch part comprises three first insulators and three second insulators; the top of the first insulator and the top of the second insulator are provided with a first power connection plate and a second power connection plate respectively, the first power connection plate and the second power connection plate are provided with a rotating mechanism and a bearing mechanism respectively, the driving part comprises a rotating shaft, the rotating shaft is provided with three swing rods, the swing rods are hinged to third insulators, and the third insulators are hinged to the rotating mechanism. The spherical curved surface is arranged on the fixed plate, the end part of the brake blade is in close fit with the spherical curved surface, and the inclined plate and the elastic plate are also arranged, so that the contact area between the brake blade and the first power connection plate and the contact area between the brake blade and the second power connection plate are increased, heat generated when current passes through can be effectively dispersed, and the heat productivity of the isolating switch is remarkably reduced.

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 switch blade and the contact in this patent is small, the material consumption is large and the power transmission efficiency is low, which may cause overheating and premature failure.

[0006] Therefore, the present invention proposes an electric power engineering isolating switch device to solve the above problems. Summary of the invention

[0007] In order to overcome the above defects of the prior art, an embodiment of the present invention provides a power engineering isolating switch device, which solves the problems raised in the above background technology by providing a switch part and a drive part.

[0008] To achieve the above object, the present invention provides the following technical solution: an electric power engineering isolating switch device, comprising: The device body includes a mounting seat, and mounting holes are provided at four corners of the mounting seat. The plurality of mounting holes are used to fix the mounting seat on an existing supporting device; A switch part, the switch part comprises three first insulators and three second insulators, the plurality of the first insulators and the second insulators are evenly arranged on both sides of the mounting seat, the first insulators and the second insulators are used to isolate the mounting seat from high voltage electricity, the first insulator and the second insulator are respectively provided with a first power connection plate and a second power connection plate on the top, the first power connection plate is provided with a rotating mechanism, the second power connection plate is provided with a supporting mechanism capable of contacting the rotating mechanism, and the isolating switch is closed when the rotating mechanism contacts the supporting mechanism; The driving part includes a rotating shaft arranged in the middle of the mounting seat, and the rotating shaft is provided with three rocker arms corresponding to the rotating mechanisms one by one. The free ends of the rocker arms are hinged with third insulators, and the free ends of the third insulators are hinged with the rotating mechanism on the corresponding side. The third insulator is used to drive the rotating mechanism to rotate.

[0009] Preferably, the rotating mechanism includes a fixed plate arranged on the first power connection plate, and both end faces of the fixed plate are spherical surfaces. The fixed plate is provided with a pin shaft passing through the centers of the two spherical surfaces, and both ends of the pin shaft are provided with gate blades. The end of the gate blade close to the fixed plate can cooperate with the spherical surface, and the spherical surface can increase the contact area between the gate blade and the fixed plate. A connecting block is provided between the two gate blades, and the connecting block is used to connect the two gate blades into a whole.

[0010] Preferably, the supporting mechanism comprises a flat plate fixed to the second power board, the flat plate is provided with two symmetrically distributed elastic plates, the spacing between the two elastic plates gradually decreases toward the flat plate, the free end of the switch blade is provided with an inclined plate cooperating with the elastic plate, and the isolating switch is closed when the inclined plate contacts the elastic plate.

[0011] 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, the turntable is provided with a plurality of through holes evenly distributed along the circumferential direction of the rotating shaft, the turntable is provided with a handle, and 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.

[0012] Preferably, a pressure mechanism is provided between the flat plate and the elastic plate, and the pressure mechanism includes a pressure bolt threadedly connected to the flat plate, the top of the pressure bolt is rotatably connected to a rotating drum, the top of the rotating drum is provided with a pressure plate, and the pressure plate maintains contact with the outer surface of the elastic plate on the corresponding side.

[0013] Preferably, the mounting seat is provided with two symmetrically distributed clearance grooves, one side of each of the clearance grooves is detachably connected to a support plate, the rotating shaft passes through the two clearance grooves and is plugged into the two support plates, and the clearance grooves are used for disassembly and installation of the driving part.

[0014] Preferably, two symmetrically distributed anti-slip plates are provided on the rotating shaft, the width of the anti-slip plates is greater than the width of the clearance groove, the anti-slip plates maintain contact with the side walls of the mounting seat, and the anti-slip plates are used to prevent the rotating shaft from detaching from the support plate.

[0015] Preferably, two symmetrically distributed self-locking mechanisms are provided between the rotating shaft and the mounting seat, and the self-locking mechanism includes a pull rod arranged on the rotating shaft, and the mounting seat is provided with a sleeve that can swing up and down, and a step rod is movably connected in the sleeve, one end of the step rod is hinged to the free end of the pull rod on the corresponding side, and the other end of the step rod is provided with a step plate, and the step rod is provided with an elastic part located between its step end and the sleeve.

[0016] Preferably, the horizontal ends of the first power connection board and the second power connection board are both provided with connecting bolts, and the connecting bolts are used to connect the first power connection board and the second power connection board to the circuit.

[0017] Preferably, a reinforcing plate is provided at the connection between the flat plate and the elastic plate, and the reinforcing plate is used to increase the connection strength between the flat plate and the elastic plate.

[0018] Technical effects and advantages of the present invention: 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.

[0019] 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.

[0020] 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.

[0021] 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

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] 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.

[0024] Figure 3 It is a structural schematic diagram of the switch part in the present invention.

[0025] Figure 4 It is a cross-sectional view of the switch portion of the present invention.

[0026] Figure 5 It is an exploded view of the switch part in the present invention.

[0027] Figure 6 It is a cutaway view of the rotating mechanism in the present invention.

[0028] Figure 7 It is a cross-sectional view of the supporting mechanism in the present invention.

[0029] Figure 8 It is a top view of the gate blade in the present invention.

[0030] Fig. 9 It is a cutaway view of the overall structure of the present invention.

[0031] Fig.10 It is a schematic diagram of the structure of the driving mechanism in the present invention.

[0032] The accompanying drawings are marked as follows: 1. Equipment body; 101. Mounting seat; 102. Mounting hole; 2. Switch unit; 201. First insulator; 202. Second insulator; 203. First power board; 204. Second power board; 205. Rotating mechanism; 206. Supporting mechanism; 2051, fixing plate; 2052, pin shaft; 2053, gate blade; 2054, connecting block; 2061, flat plate; 2062, elastic plate; 2063, inclined plate; 3. Driving unit; 301. Rotating shaft; 302. Rocker; 303. Third insulator; 304. Driving mechanism; 3041, turntable; 3042, through hole; 3043, handle; 3044, fixing bolt; 4. Pressurizing mechanism; 401. Pressurizing bolt; 402. Rotating drum; 403. Pressurizing plate; 5. Give way slot; 6. Support plate; 7. Anti-slip board; 8. Self-locking mechanism; 801. Pull rod; 802. Sleeve; 803. Step rod; 804. Step plate; 805. Elastic member; 9. Connecting bolts; 10. Reinforcement plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1 See also Figures 1 to 10 As shown, the power engineering isolating switch device in the embodiment of the present invention includes an equipment body 1, the equipment body 1 includes a mounting base 101, and mounting holes 102 are opened at the four corners of the mounting base 101. The multiple mounting holes 102 are used to fix the mounting base 101 on the existing supporting equipment, and also include a switch part 2 and a drive part 3.

[0035] See also Figure 1 , Figure 3 and Figure 4 As shown, the switch part 2 includes three first insulators 201 and three second insulators 202, and the plurality of first insulators 201 and second insulators 202 are evenly arranged on both sides of the mounting seat 101. The first insulators 201 and second insulators 202 are used to isolate the mounting seat 101 from high voltage electricity. The first insulators 201 and second insulators 202 are respectively provided with a first power connection plate 203 and a second power connection plate 204 on the top. The first power connection plate 203 is provided with a rotating mechanism 205, and the second power connection plate 204 is provided with a supporting mechanism 206 that can contact with the rotating mechanism 205. When the rotating mechanism 205 contacts with the supporting mechanism 206, the isolating switch is closed; combined with Figure 2 As shown, the driving part 3 includes a rotating shaft 301 arranged in the middle of the mounting base 101, and three rocker arms 302 corresponding to the rotating mechanism 205 are arranged on the rotating shaft 301. The free end of the rocker arm 302 is hinged with a third insulator 303, and the free end of the third insulator 303 is hinged to the rotating mechanism 205 on the corresponding side. The third insulator 303 is used to drive the rotating mechanism 205 to rotate.

[0036] It should be noted that the first insulator 201, the second insulator 202 and the third insulator 303 are all prior art and are made of insulating materials, and will not be described in detail here.

[0037] See also Figure 3 , Figure 6 and Figure 8As shown, the rotating mechanism 205 includes a fixed plate 2051 arranged on the first power connection plate 203, and the two end surfaces of the fixed plate 2051 are both spherical surfaces. The fixed plate 2051 is provided with a pin shaft 2052 passing through the centers of the two spherical surfaces, and both ends of the pin shaft 2052 are provided with a gate blade 2053. The end of the gate blade 2053 close to the fixed plate 2051 can cooperate with the spherical surface. The spherical surface can increase the contact area between the gate blade 2053 and the fixed 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.

[0038] See also Figure 5 and Figure 7 As shown, the supporting mechanism 206 includes a flat plate 2061 fixed to the second power board 204, and two symmetrically distributed elastic plates 2062 are provided on the flat plate 2061. The distance between the two elastic plates 2062 gradually decreases toward the flat plate 2061. The free end of the switch blade 2053 is provided with an inclined plate 2063 that cooperates with the elastic plate 2062. When the inclined plate 2063 contacts the elastic plate 2062, the isolating switch is closed.

[0039] See also Figure 2 and Fig.10 As shown, 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 includes a turntable 3041, a plurality of through holes 3042 evenly distributed along the circumferential direction of the rotating shaft 301 are opened on the turntable 3041, a handle 3043 is provided on the turntable 3041, and two fixing bolts 3044 passing through the through holes 3042 are provided between the turntable 3041 and the handle 3043, and the two fixing bolts 3044 are symmetrically distributed and are used to adjust the initial angle between the handle 3043 and the horizontal plane.

[0040] See also Figure 7 and Fig.10 As shown, a pressure mechanism 4 is provided between the flat plate 2061 and the elastic plate 2062, and the pressure mechanism 4 includes a pressure bolt 401 threadedly connected to the flat plate 2061, and a rotating drum 402 is rotatably connected to the top of the pressure bolt 401. A pressure plate 403 is provided on the top of the rotating drum 402, and the pressure plate 403 maintains contact with the outer surface of the elastic plate 2062 on the corresponding side.

[0041] See also Figure 3 , Figure 5 and Figure 7 As shown, the horizontal ends of the first power connection plate 203 and the second power connection plate 204 are both provided with connecting bolts 9, which are used to connect the first power connection plate 203 and the second power connection plate 204 to the circuit; the connection between the flat plate 2061 and the elastic plate 2062 is provided with a reinforcing plate 10, which is used to increase the connection strength between the flat plate 2061 and the elastic plate 2062.

[0042] When in use, in the initial state, the inclined plate 2063 on the gate blade 2053 is not in contact with the elastic plate 2062. The staff needs to first cut off the power of the line and install the equipment body 1 on the existing supporting equipment. Specifically, bolts that match the size of the mounting hole 102 can be selected first, and multiple bolts can be used to pass through multiple mounting holes 102, and the mounting base 101 can be fixed on the existing supporting equipment.

[0043] The staff needs to contact the line connectors on both sides with the first power board 203 and the second power board 204 respectively, and then use the connecting bolts 9 to fix the line connectors on the first power board 203 and the second power board 204. After the line connectors are connected, the lines are energized. Since the inclined plate 2063 on the switch blade 2053 is not in contact with the elastic plate 2062, the lines on both sides are in a disconnected state at this time.

[0044] The staff needs to remove the fixing bolts 3044 on the handle 3043 and the turntable 3041, and then adjust the initial angle of the handle 3043 so that the handle 3043 can be pulled to the most labor-saving state, and then pass the fixing bolts 3044 through the through holes 3042 on the corresponding sides so that the two fixing bolts 3044 are symmetrically distributed around the center, thereby re-fixing the handle 3043 and the turntable 3041 together, and the handle 3043 will drive the turntable 3041 to rotate when it swings.

[0045] When the lines on both sides need to be connected, the staff can use a tool to pull the handle 3043 downward, the handle 3043 drives the turntable 3041 to rotate, the turntable 3041 drives the shaft 301 to rotate, the shaft 301 drives the three swing rods 302 to swing downward at the same time, the swing rod 302 drives the third insulator 303 on the corresponding side to move downward, the third insulator 303 pulls the blade 2053 on the corresponding side to swing downward, the end of the blade 2053 is always in contact with 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 disguised form, but also will not affect the swing of the blade 2053.

[0046] The inclined plate 2063 moves downward with the blade 2053. When the inclined plate 2063 contacts the elastic plate 2062 on the corresponding side, 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 board 204 in disguised form. After the circuit works normally, the contact area between the blade 2053 and the first power board 203 and the second power board 204 is increased, which increases the contact area between the moving contact and the fixed contact, reduces the heat generation of the isolating switch, improves the reliability of the isolating switch, and prolongs the service life.

[0047] When the isolating 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 rocker arms 302 to swing upward, the rocker arms 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 with the blade 2053 and separates from the elastic plate 2062, and the lines on both sides are disconnected.

[0048] When the contact effect between the elastic plate 2062 and the inclined plate 2063 is not good, the staff can first disconnect the isolating switch, and then rotate the pressure bolt 401. The pressure bolt 401 drives the pressure plate 403 fixed to the rotating drum 402 to move up and down, thereby adjusting the 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.

[0049] Embodiment 2 It was found in actual use that since the gate blade 2053 lacks a limiting structure, when the disconnector is opened, the gate blade 2053 is prone to swing downward under the action of gravity, causing incorrect closing of the switch and triggering a dangerous situation. When the inclined plate 2063 contacts the elastic plate 2062, since there is no additional downward pressure, the contact effect between the inclined plate 2063 and the elastic plate 2062 is poor, which can easily cause incorrect opening of the switch. Further improvements are made on the basis of the above embodiments.

[0050] See also Figure 2 and Fig. 9 As shown, two symmetrically distributed self-locking mechanisms 8 are provided between the rotating shaft 301 and the mounting seat 101, and the self-locking mechanism 8 includes a pull rod 801 arranged on the rotating shaft 301, and a sleeve 802 that can swing up and down is provided on the mounting seat 101, and a step rod 803 is movably connected in the sleeve 802, and one end of the step rod 803 is hinged to the free end of the pull rod 801 on the corresponding side, and a step plate 804 is provided at the other end of the step rod 803, and an elastic member 805 is mounted on the step rod 803 and located between its step end and the sleeve 802.

[0051] Specifically, there are two states between the pull rod 801 and the step rod 803. When the isolating switch is closed, the acute angle opening between the pull rod 801 and the step rod 803 faces upward. When the isolating switch is opened, the acute angle opening between the pull rod 801 and the step rod 803 faces downward.

[0052] On the basis of the above embodiment, when in use, in the initial state, the isolating switch is in the open state, the acute angle opening clamped by the pull rod 801 and the step rod 803 faces downward, and the elastic member 805 always applies a certain initial elastic force to the step rod 803, so that the pull rod 801 and the step rod 803 will maintain the current state in the absence of external force. 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 switch blade 2053 from automatically swinging downward under the action of gravity, thereby avoiding accidental closing.

[0053] When the isolating switch needs to be closed, the handle 3043 drives the rotating shaft 301 to rotate through the turntable 3041, and the rotating shaft 301 drives the pull rod 801 to swing downward. When the pull rod 801 swings downward, it will first squeeze the step rod 803, causing the step rod 803 to slide relative to the sleeve 802, and the distance between the step portion of the step 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 restores its initial length. When the isolating switch is closed, the acute angle between the pull rod 801 and the step rod 803 becomes open upward, and the elastic force of the elastic member 805 makes the pull rod 801 tend to continue to swing downward, and finally acts on the inclined plate 2063 on the gate blade 2053, exerting downward pressure on the inclined plate 2063, so that the inclined plate 2063 and the elastic plate 2062 achieve a better contact effect to avoid accidental opening of the gate.

[0054] Embodiment 3 In actual use, it is found that when the parts related to the rotating shaft 301 in the isolating switch are damaged after long-term use, since the rotating shaft 301 is directly rotatably connected to the mounting base 101, it is very troublesome, time-consuming and labor-intensive to remove the rotating shaft 301 from the mounting base 101. The same problem will also be encountered during installation. Further improvements are made on the basis of the above embodiments.

[0055] See also Figure 1 and Figure 2 As shown, the mounting seat 101 is provided with two symmetrically distributed clearance grooves 5 , one side of each clearance groove 5 is detachably connected with a support plate 6 , the rotating shaft 301 passes through the two clearance grooves 5 and is plugged into the two support plates 6 , and the clearance grooves 5 are used for disassembly and installation of the driving part 3 .

[0056] See also Figure 2 As shown, two symmetrically distributed anti-slip plates 7 are provided on the rotating shaft 301. The width of the anti-slip plates 7 is greater than the width of the clearance groove 5. The anti-slip plates 7 maintain contact with the side walls of the mounting seat 101. The anti-slip plates 7 are used to prevent the rotating shaft 301 from detaching from the support plate 6.

[0057] On the basis of the above embodiment, when encountering special circumstances and needing to remove the rotating shaft 301, the staff first puts the isolating switch in the open state, and then removes the support plate 6 on the mounting base 101, and then takes out the rotating shaft 301 from the two make way slots 5, and inspects and repairs the components on the rotating shaft 301.

[0058] After the inspection and maintenance, the staff can put the rotating shaft 301 back into the two making way grooves 5 so that the anti-slip plate 7 contacts the inner wall of the mounting seat 101. Since the width of the anti-slip plate 7 is greater than the width of the making way grooves 5, the rotating shaft 301 will not move laterally. At this time, the two support plates 6 can be re-fixed on the mounting seat 101 to complete the installation of the rotating shaft 301. The setting of the support plates 6 and the making way grooves 5 brings convenience to the staff's maintenance.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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 a 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.

2. The power engineering isolating switch device according to claim 1, characterized in that: 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 a gate blade (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).

3. The power engineering isolating switch device according to claim 2, characterized in that: 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.

4. The power engineering isolating switch device according to claim 3, 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.

5. The power engineering isolating switch device according to claim 4, 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.

6. The power engineering isolating switch device according to claim 5, 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).

7. The power engineering isolating switch device according to claim 6, 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).

8. The power engineering isolating switch device according to claim 7, 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).

9. The power engineering isolating switch device according to claim 8, 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).

10. The power engineering isolating switch device according to claim 9, 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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