An electric operating mechanism for isolating switch

Abstract

The present invention discloses an electric operating mechanism for an isolating switch, which belongs to the technical field of isolating switch accessories, and comprises a shell, a motor is fixedly installed in the shell, a main shaft is rotatably installed on the shell, an automatic switching component and an emergency switching component are arranged in the shell, the emergency switching component comprises a switching fixed ring frame, the automatic switching component can realize the switching between electric and manual states automatically without manual operation, and the switching can be realized in any rotation reverse direction, the emergency switching component can complete the switching between electric and manual states manually when the motor is powered off or fails, so as to cope with the occurrence of emergency situations in a limited manner, the switching slide and the locking circular plate are arranged to be in a detachable state, which reduces the difficulty of disassembly and can facilitate the replacement of internal parts.

Description

Technical Field

[0001] The invention relates to the technical field of isolating switch accessories, and in particular to an electric operating mechanism for an isolating switch. Background Art

[0002] An isolating switch is a switching device without arc extinguishing function that is mainly used to isolate power supplies, perform switching operations, and connect and disconnect small current circuits. 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. The isolating switch mainly uses an electric operating mechanism to connect and disconnect the main switch. The switching part of the existing electric operating mechanism of the isolating switch is supported by a spring, and the spring will deform after long-term use, so the support by the spring is relatively unstable.

[0003] The Chinese patent application with the announcement number CN214624852U discloses an electric operating mechanism for an isolating switch, comprising a cover, a housing and a motor with a capacitor, a spring, a turntable and a pressure plate are sequentially installed on the side of the motor with a capacitor close to the cover, a first fixing member for installing and fixing the motor with a capacitor is provided in the housing, and a second fixing member for installing and fixing the pressure plate is also provided in the housing, a lock group is installed at the circular hole on the top of the housing, a dial block that can move the pressure plate to squeeze the turntable is connected to the side of the lock group close to the inner cavity of the housing, a plug-in terminal and a junction box are installed at the opening of the inner side of the housing, a micro switch and a fixing plate for fixing the position of the micro switch are installed on the cover, a rotating shaft is installed on the side of the turntable close to the cover, and a hole through which the rotating shaft passes is provided on the cover. Although the above patent can realize manual and electric switching, it uses a spring for support, the spring is relatively unstable and prone to failure, and can only be switched manually, and cannot be switched automatically between electric and manual. Therefore, the present invention provides an electric operating mechanism for an isolating switch. Summary of the invention

[0004] The present invention aims at the defects of the prior art and provides an electric operating mechanism for an isolating switch, which overcomes the problems of using springs for support, the springs being relatively unstable and prone to failure, and can only be switched manually, and cannot automatically switch between electric and manual operation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric operating mechanism for an isolating switch, comprising a shell, a motor fixedly installed in the shell, a main shaft rotatably installed on the shell, an automatic switching component arranged in the shell, the automatic switching component comprising a switching circular plate, three switching slides movably arranged on the switching circular plate, a switching rotating plate rotatably installed on the switching circular plate, three locking circular plates rotatably installed on the switching rotating plate, the main shaft and the switching rotating plate are rotationally matched, the switching slide and the locking circular plate are slidingly matched, an emergency switching component is arranged in the shell, the emergency switching component comprising a switching fixed ring frame, a primary transmission ring plate rotatably installed on the switching fixed ring frame, a driving rotating seat fixedly installed on the output shaft of the motor, three sliding rods slidably installed on the driving rotating seat, and the sliding rods and the primary transmission ring plate are slidingly matched.

[0006] Furthermore, the automatic switching component also includes a separation driving gear, which is fixedly connected to the primary transmission ring plate, three separation driving gears are rotatably installed on the switching circular plate, a switching rack is fixedly installed on the switching slide, the separation driving gear and the switching rack constitute a gear rack pair, and a separation auxiliary gear is fixedly installed on the separation driving gear, and the separation auxiliary gears constitute a gear pair with the separation driving gear.

[0007] Furthermore, three separation chutes 2 and three separation chutes 1 are fixedly arranged on the switching circular plate, and the separation chute 1 and the separation chute 2 each include an arc segment and a straight segment, and the switching slide slides on the straight segments in the separation chute 1 and the separation chute 2, and the switching slide rotates on the arc segment in the separation chute 1 and the separation chute 2.

[0008] Furthermore, an arc strip is provided on the inner side of the locking circular plate, and the arc strip on the locking circular plate is in sliding cooperation with the main shaft and the switching rotating plate. A locking gear ring is fixedly installed on the outer side of the switching circular plate, and a locking slide is slidably installed on the outer shell. Two teeth are provided on the locking slide. When the locking slide and the locking gear ring are engaged, a gear pair is formed.

[0009] Furthermore, a manual swivel frame is rotatably mounted on the outer shell, a strip-shaped through hole is provided on the manual swivel frame, a secondary transmission ring plate is rotatably mounted on the switching fixed ring frame, an emergency manual gear ring is rotatably mounted on the secondary transmission ring plate, and a plurality of clamping blocks are evenly provided on the emergency manual gear ring.

[0010] Furthermore, the emergency switching assembly also includes a spline clamping shaft, which is a spline sliding fit with the clamping block when engaged, a circular magnetic rod is rotatably installed on the spline clamping shaft, a torsion spring is arranged between the circular magnetic rod and the spline clamping shaft, and an arc magnet is fixedly installed on the manual swivel frame.

[0011] Furthermore, three auxiliary slide bars are slidably mounted on the secondary transmission ring plate, the auxiliary slide bars and the primary transmission ring plate are slidably matched, the axis center lines of the auxiliary slide bars and the axis center lines of the slide bars are on the same straight line, and a spring is arranged between the slide bars and the driving swivel seat.

[0012] Furthermore, three emergency auxiliary gears are rotatably mounted on the secondary transmission ring plate, and the emergency auxiliary gears all form a gear pair with the emergency manual gear ring. A torsion spring is arranged between the emergency auxiliary gear and the secondary transmission ring plate.

[0013] Furthermore, a strip transmission plate is rotatably mounted on the emergency auxiliary gear at a position away from the center of the circle, and the other end of the strip transmission plate is rotatably connected to the auxiliary sliding rod.

[0014] Compared with the prior art, the present invention has the following advantages: (1) By setting an automatic switching component, the present invention can automatically switch between the electric and manual states without manual operation, and the switching can be achieved in any rotation direction. (2) By setting an emergency switching component, the present invention can manually switch between the electric and manual states in the event of a power outage or failure of the motor, thereby being able to cope with emergencies to a limited extent. (3) By setting the switching slide and the positioning circular plate to be detachable, the present invention reduces the difficulty of disassembly and facilitates the replacement of internal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the switching fixed ring frame of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the switching plate of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the switching circular plate of the present invention.

[0019] Figure 5 It is a cross-sectional view of the housing of the present invention.

[0020] Figure 6 It is a schematic diagram of the structure of the switching rack of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the secondary transmission ring plate of the present invention.

[0022] Figure 8 for Figure 7 A local enlarged schematic diagram of point A in the middle.

[0023] Fig. 9 It is a cross-sectional view of the emergency switch assembly of the present invention.

[0024] Fig.10 for Fig. 9 A local enlarged schematic diagram of point B in the middle.

[0025] Reference numerals: 101-housing; 102-spindle; 103-manual rotating ring frame; 104-position electric cylinder; 105-position slide seat; 106-switching circular plate; 107-switching fixed ring frame; 108-position gear ring; 109-switching slide seat; 110-switching rotating plate; 111-position circular plate; 112-separation slide groove 1; 113-primary transmission ring plate; 114-separation driving gear; 115-separation drive gear; 11 6-separation auxiliary gear; 117-separation slide groove 2; 118-switching rack; 119-arc magnet; 120-bar through hole; 121-round magnetic bar; 122-spline clamping shaft; 123-motor; 124-emergency manual gear ring; 125-clamping block; 126-secondary transmission ring plate; 127-driving swivel seat; 128-slide rod; 129-auxiliary slide rod; 130-emergency auxiliary gear; 131-bar transmission plate. DETAILED DESCRIPTION

[0026] 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.

[0027] Example: Reference Figure 1-Figure 10 An electric operating mechanism for an isolating switch includes a housing 101, a motor 123 is fixedly installed in the housing 101, a main shaft 102 is rotatably installed on the housing 101, an automatic switching component is arranged in the housing 101, and the automatic switching component includes a switching circular plate 106 and a separation driving gear 114, three switching slides 109 are movably arranged on the switching circular plate 106, three separation chute twos 117 and three separation chute ones 112 are fixedly arranged on the switching circular plate 106, and the separation chute one 112 and the separation chute two 117 each include an arc segment and a straight segment, and the switching slide 1 09 slides on the straight sections in the separation chute 112 and the separation chute 2 117, the switching slide 109 rotates on the arc sections in the separation chute 112 and the separation chute 2 117, the switching circular plate 106 is rotatably mounted with a switching rotating plate 110, and the switching rotating plate 110 is rotatably mounted with three locking circular plates 111, the main shaft 102 and the switching rotating plate 110 are rotationally matched, the switching slide 109 and the locking circular plate 111 are slidingly matched, an arc strip is arranged on the inner side of the locking circular plate 111, and the arc strip on the locking circular plate 111 is slidingly matched with the main shaft 102 and the switching rotating plate 110.

[0028] Three separation drive gears 115 are rotatably mounted on the switching circular plate 106, a switching rack 118 is fixedly mounted on the switching slide 109, the separation drive gear 115 and the switching rack 118 constitute a gear rack pair, a separation auxiliary gear 116 is fixedly mounted on the separation drive gear 115, and the separation auxiliary gears 116 constitute a gear pair with the separation active gear 114, a locking gear ring 108 is fixedly mounted on the outer side of the switching circular plate 106, a locking slide 105 is slidably mounted on the outer shell 101, a locking electric cylinder 104 is fixedly mounted on the outer shell 101, the piston rod end of the locking electric cylinder 104 is fixedly connected to the locking slide 105, two teeth are provided on the locking slide 105, and a gear pair is formed when the locking slide 105 and the locking gear ring 108 are engaged.

[0029] refer to Figure 6 , the separation driving gear 114 rotates clockwise, driving the separation auxiliary gear 116 to rotate counterclockwise, that is, driving the separation driving gear 115 to rotate counterclockwise. At this time, the switching slide 109 is at the lowest end of the straight line segment of the separation slide groove 112 and the separation slide groove 2 117, so that the switching rack 118 cannot slide under the action of the separation driving gear 115, that is, the switching rack 118 and the separation driving gear 115 rotate synchronously, that is, the switching slide 109 rotates in the arc segment of the separation slide groove 112 and the separation slide groove 2 117. At this time, the switching slide 109 and the positioning circular plate 111 are in an engaged state, so that the positioning circular plate 111 rotates under the action of the switching slide 109, so that the arc strip inside the positioning circular plate 111 is disengaged from the engagement with the main shaft 102, that is, the main shaft 102 can rotate freely.

[0030] refer to Figure 6 , the separation driving gear 114 rotates counterclockwise, driving the separation auxiliary gear 116 to rotate counterclockwise, that is, driving the separation driving gear 115 to rotate counterclockwise. At this time, the switching slide 109 is at the lowest end of the straight line segments of the separation chute 1 112 and the separation chute 2 117, so that the switching rack 118 slides in the direction away from the center of the switching circular plate 106 under the action of the primary transmission ring plate 113, that is, the switching slide 109 slides in the direction away from the center of the switching circular plate 106, so that the switching slide 109 and the locking circular plate 111 are disengaged, so that the switching rotating plate 110 can rotate freely, that is, the main shaft 102 can rotate freely.

[0031] An emergency switching assembly is arranged in the housing 101, and the emergency switching assembly includes a switching fixed ring frame 107 and a spline clamping shaft 122. A primary transmission ring plate 113 is rotatably mounted on the switching fixed ring frame 107, and a separation driving gear 114 is fixedly connected to the primary transmission ring plate 113. The switching circular plate 106 is rotatably mounted on the switching fixed ring frame 107. A driving swivel 127 is fixedly mounted on the output shaft of the motor 123. Three slide bars 128 are slidably mounted on the driving swivel 127. The slide bars 128 and the primary transmission ring plate 113 are in sliding cooperation. A spring is arranged between the slide bars 128 and the driving swivel 127. A secondary transmission ring plate 126 is rotatably mounted on the switching fixed ring frame 107. Three auxiliary slide bars 129 are slidably mounted on the secondary transmission ring plate 126. The auxiliary slide bars 129 and the primary transmission ring plate 113 are in sliding cooperation. The axis center line of the auxiliary slide bar 129 and the axis center line of the slide bar 128 are on the same straight line.

[0032] An emergency manual gear ring 124 and three emergency auxiliary gears 130 are rotatably mounted on the secondary transmission ring plate 126. The emergency auxiliary gears 130 form a gear pair with the emergency manual gear ring 124. A torsion spring is arranged between the emergency auxiliary gear 130 and the secondary transmission ring plate 126. One end of the torsion spring is fixedly connected to the secondary transmission ring plate 126, and the other end of the torsion spring is fixedly connected to the emergency auxiliary gear 130. A strip transmission plate 131 is rotatably mounted on the emergency auxiliary gear 130 at a position away from the center of the circle, and the other end of the strip transmission plate 131 is rotatably connected to the auxiliary slide rod 129.

[0033] A manual swivel frame 103 is rotatably mounted on the outer shell 101, and a bar through hole 120 is provided on the manual swivel frame 103. An emergency manual gear ring 124 is rotatably mounted on the secondary transmission ring plate 126, and a plurality of clamping blocks 125 are evenly arranged on the emergency manual gear ring 124. The spline clamping shaft 122 and the clamping blocks 125 are spline slidingly matched when engaged. A circular magnetic rod 121 is rotatably mounted on the spline clamping shaft 122, and a torsion spring is provided between the circular magnetic rod 121 and the spline clamping shaft 122, one end of the torsion spring is fixedly mounted on the circular magnetic rod 121, and the other end of the torsion spring is fixedly mounted on the spline clamping shaft 122. An arc magnet 119 is fixedly mounted on the manual swivel frame 103.

[0034] refer to Figure 7When the driving swivel seat 127 cannot rotate, the spline clamping shaft 122 is engaged with the clamping block 125 on the emergency manual gear ring 124 from the bar through hole 120 of the manual swivel frame 103, and the circular magnetic bar 121 is pulled. Under the action of the spline clamping shaft 122, the emergency manual gear ring 124 is driven to rotate clockwise, and then the emergency auxiliary gear 130 is driven to rotate counterclockwise. The torsion spring between the emergency auxiliary gear 130 and the secondary transmission ring plate 126 is compressed, and under the action of the bar transmission plate 131, the auxiliary slide The rod 129 slides toward the center of the driving seat 127, thereby pushing the slide bar 128 to move toward the center of the driving seat 127. The spring between the driving seat 127 and the slide bar 128 is compressed until the circular magnetic bar 121 is pulled to cause the manual rotating ring frame 103 to start rotating, that is, the slide bar 128 is disengaged and engaged with the primary transmission ring plate 113. At this time, the circular magnetic bar 121 is rotated again to make the circular magnetic bar 121 and the arc magnet 119 adsorbed, that is, the separation of the driving seat 127 and the primary transmission ring plate 113 is completed.

[0035] It is worth noting that there is a large friction between the separation driving gear 114 and the separation auxiliary gear 116, and there is a large friction between the separation driving gear 115 and the switching circular plate 106, so that when the switching circular plate 106 is not restricted, the separation driving gear 114 and the switching circular plate 106 rotate synchronously, and the separation driving gear 114 cannot rotate relative to the switching circular plate 106.

[0036] Working principle: automatically switch to manual state, start the locking electric cylinder 104, drive the locking slide 105 to slide in the direction close to the center of the locking gear ring 108, so that the locking slide 105 and the locking gear ring 108 are engaged to form a gear pair, limiting the rotation of the locking gear ring 108, that is, making the switching circular plate 106 unable to rotate freely, and then start the motor 123 to drive the driving swivel 127 to rotate. At this time, the slide rod 128 and the primary transmission ring plate 113 are in an engaged state, so that the primary transmission ring plate 113 rotates, and the manual swivel frame 103 and the primary transmission ring plate 113 rotate synchronously. The rotation of the primary transmission ring plate 113 causes the separation active gear 114 to rotate, and under the action of the separation slide groove 112 and the separation slide groove 2 117, the driving swivel 127 can rotate freely whether it is forward or reverse, that is, the manual state is automatically switched.

[0037] It is worth noting that the positioning circular plate 111 and the switching slide 109 are slidably matched to facilitate the replacement of parts.

[0038] When the motor 123 cannot drive the swivel seat 127 to rotate, the spline clamping shaft 122 and the clamping block 125 are engaged, and the circular magnetic rod 121 is pulled to rotate, so that the emergency manual gear ring 124 rotates, that is, the auxiliary slide bar 129 pushes the slide bar 128 to slide, and then the slide bar 128 is disengaged from the sliding engagement with the primary transmission ring plate 113. After the sliding engagement and disengagement of the primary transmission ring plate 113 and the slide bar 128 are completed, the manual swivel frame 103 can rotate freely. At this time, the circular magnetic rod 121 is rotated again, so that the circular magnetic rod 121 and the arc magnet 119 are adsorbed. At this time, the manual swivel frame 103 is rotated again, and the shaft end of the slide bar 128 slides on the inner surface of the primary transmission ring plate 113, driving the swivel seat 127 and the primary transmission ring plate 113 to disengage the synchronous rotation, that is, the main shaft 102 can rotate freely, completing the manual state switching manually in the emergency state.

[0039] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. An electric operating mechanism for an isolating switch, comprising a housing (101), a motor (123) fixedly mounted in the housing (101), and a main shaft (102) rotatably mounted on the housing (101), characterized in that: An automatic switching component is arranged in the housing (101), and the automatic switching component comprises a switching circular plate (106), three switching slide seats (109) are movably arranged on the switching circular plate (106), a switching rotating plate (110) is rotatably mounted on the switching circular plate (106), and three locking circular plates (111) are rotatably mounted on the switching rotating plate (110), the main shaft (102) and the switching rotating plate (110) are rotationally matched, and the switching slide seat (109) and the locking circular plate (111) are slidingly matched; An emergency switch assembly is arranged in the housing (101), and the emergency switch assembly comprises a switch fixing ring frame (107), a primary transmission ring plate (113) is rotatably mounted on the switch fixing ring frame (107), a drive rotating seat (127) is fixedly mounted on the output shaft of the motor (123), three slide bars (128) are slidably mounted on the drive rotating seat (127), and the slide bars (128) and the primary transmission ring plate (113) are in sliding cooperation; A manual rotating ring frame (103) is rotatably mounted on the housing (101), a strip-shaped through hole (120) is provided on the manual rotating ring frame (103), a secondary transmission ring plate (126) is rotatably mounted on the switching fixed ring frame (107), an emergency manual gear ring (124) is rotatably mounted on the secondary transmission ring plate (126), and a plurality of clamping blocks (125) are evenly arranged on the emergency manual gear ring (124); The emergency switch assembly further comprises a spline clamping shaft (122), wherein the spline clamping shaft (122) and the clamping block (125) are spline-slidingly matched when they are engaged, a circular magnetic bar (121) is rotatably mounted on the spline clamping shaft (122), a torsion spring is arranged between the circular magnetic bar (121) and the spline clamping shaft (122), and an arc-shaped magnet (119) is fixedly mounted on the manual rotating ring frame (103); Three auxiliary slide bars (129) are slidably mounted on the secondary transmission ring plate (126); the auxiliary slide bars (129) and the primary transmission ring plate (113) are slidably matched; the axis center line of the auxiliary slide bar (129) and the axis center line of the slide bar (128) are on the same straight line; and a spring is arranged between the slide bar (128) and the driving swivel seat (127).

2. The electric operating mechanism for the isolating switch according to claim 1, characterized in that: The automatic switching assembly further comprises a separation driving gear (114), the separation driving gear (114) and the primary transmission ring plate (113) are fixedly connected, three separation driving gears (115) are rotatably mounted on the switching circular plate (106), a switching rack (118) is fixedly mounted on the switching slide (109), the separation driving gear (115) and the switching rack (118) form a gear rack pair, and a separation auxiliary gear (116) is fixedly mounted on the separation driving gear (115), and the separation auxiliary gear (116) and the separation driving gear (114) form a gear pair.

3. The electric operating mechanism for the isolating switch according to claim 2, characterized in that: The switching circular plate (106) is fixedly provided with three separation chutes (117) and three separation chutes (112). The separation chutes (112) and the separation chutes (117) each include an arc segment and a straight segment. The switching slide (109) slides on the straight segments in the separation chutes (112) and the separation chutes (117). The switching slide (109) rotates on the arc segments in the separation chutes (112) and the separation chutes (117).

4. The electric operating mechanism for the isolating switch according to claim 3, characterized in that: An arc strip is arranged on the inner side of the locking circular plate (111), and the arc strip on the locking circular plate (111) is in sliding cooperation with the main shaft (102) and the switching rotating plate (110). A locking toothed ring (108) is fixedly mounted on the outer side of the switching circular plate (106), and a locking slide seat (105) is slidably mounted on the housing (101). Two teeth are arranged on the locking slide seat (105), and a gear pair is formed when the locking slide seat (105) and the locking toothed ring (108) are engaged.

5. The electric operating mechanism for the isolating switch according to claim 4, characterized in that: Three emergency auxiliary gears (130) are rotatably mounted on the secondary transmission ring plate (126); the emergency auxiliary gears (130) and the emergency manual gear ring (124) form a gear pair; and a torsion spring is provided between the emergency auxiliary gears (130) and the secondary transmission ring plate (126).

6. The electric operating mechanism for the isolating switch according to claim 5, characterized in that: A strip-shaped transmission plate (131) is rotatably mounted on the emergency auxiliary gear (130) at a position away from the center of the circle, and the other end of the strip-shaped transmission plate (131) is rotatably connected to the auxiliary sliding rod (129).

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