CN213781966U - Operating device and looped netowrk cabinet of electrical switch - Google Patents

Abstract

The utility model relates to an electrical switch field provides an operating device and looped netowrk cabinet of electrical switch. The operating mechanism of the electric switch comprises a main body structure, a protective cover and a dynamic sealing structure, wherein the main body structure comprises an installation framework and a driving main shaft, the driving main shaft is rotatably connected with the installation framework, and the rotating axis of the driving main shaft is along a first direction; a protection cavity is formed between the first wall and the second wall of the protection cover, a first through hole is formed in the first wall, one end of the driving main shaft is located in the protection cavity and is right opposite to the first through hole in the first direction, the movable sealing structure comprises a transfer shaft, the transfer shaft is fixedly connected with the driving main shaft, the movable sealing structure is arranged in the first through hole in a penetrating mode, a first sealing ring is sleeved on the periphery of the mounting seat in a tight fit mode, and the first sealing ring is located outside the protection cavity. The size of the operating mechanism in the first direction is small, the number of the first sealing rings is small, the structures of the operating mechanism and the ring main unit are simple, the economy is good, and the installation process of the first sealing rings is simple and convenient.

Description

Operating device and looped netowrk cabinet of electrical switch

Technical Field

The utility model relates to an electrical switch field specifically is to an operating device and looped netowrk cabinet of electrical switch.

Background

In the looped netowrk cabinet, electrical switch such as circuit breaker, isolator and load switch all is equipped with corresponding operating device, and electrical switch is located high-voltage area, and operating device is located the low-voltage area.

The existing operating mechanism is generally exposed in a low-pressure area, and the operating mechanism is only provided with a protection function of the shell of the ring main unit, so that the operating mechanism is possibly interfered by external sundries, and the protection effect of the operating mechanism is poor.

For example, chinese utility model patent with publication number CN205384980U discloses an elastic operation mechanism for ring main unit, which adopts a three-layer mutually fixed plate structure (see fig. 1 and 3 of the patent) as an installation framework of each component (for example, a driving main shaft), wherein a through hole is reserved on the bottom plate structure, the through hole is located on one side of the driving main shaft along the axial direction, when the operating mechanism is installed on the ring main unit, an external dynamic sealing structure is adopted to connect the driving main shaft and an electrical switch, and then the opening and closing of the electrical switch is controlled by the rotation of the driving main shaft.

In order to improve the protection effect of the operating mechanism, some prior arts choose to provide a protective cover for the operating mechanism, however, the operating mechanism has multiple shafts (such as a driving spindle), and in order to achieve good protection for the operating mechanism, the size of the protective cover in the axial direction of the prior art is larger than the longest size of each shaft, so as to accommodate each shaft in the inner cavity of the protective cover, and the shafts extend out of the protective cover by lengthening the length of the rotating shaft for installing the knob and the driving spindle, which results in that on one hand, the axial size of the operating mechanism is obviously increased, and the use requirement of the ring main unit is not met; on the other hand, lengthening the shaft also results in a more complex construction of the operating mechanism.

For example, the chinese utility model patent with publication number CN210443457U discloses a five-prevention interlocking operating mechanism, which adds an outer box 3 of a circuit breaker mechanism and a sealing outer box 8 of an isolation mechanism on the basis of exposing the operating mechanism, and in addition, a sealing gasket 2 is arranged between an air box 1 of a switch cabinet and the outer boxes 3 and 8, and a sealing flat gasket 26 is extruded between a movable sealing flange 24 and the outer boxes 3 and 8, and the arrangement mode on one hand increases the size of the operating mechanism in the axial direction of a driving main shaft, and may not meet the use requirements; on the other hand, the diameter of the dynamic sealing flange 24 is larger than the diameter of the through hole for installing the dynamic sealing flange 24 on the outer boxes 3 and 8, so that the installation of the dynamic sealing flange 24 only needs to be carried out from the inner sides of the outer boxes 3 and 8, and the installation difficulty of the dynamic sealing flange 24 is larger; on the other hand, this scheme is unfavorable for setting up the sealing washer between pivot and outer container 3, 8, and is unfavorable for setting up the sealing washer between drive spindle and outer container 3, 8, and the sealed protective effect of outer container 3, 8 is not good enough.

Moreover, the operating mechanism of the isolator and the operating mechanism of the circuit breaker have a sequential relationship of operation execution sequence, and if the execution sequence is wrong, the isolator is easy to damage, so a hard interlocking piece is generally arranged between the operating mechanism of the isolator and the operating mechanism of the circuit breaker in the prior art, and the hard interlocking piece can refer to the scheme of CN210110581U, the structure of No. 3 in the scheme is the hard interlocking piece of the circuit breaker, and locking/unlocking is realized through the matching of the structure and a raised structure on a shaft 11, however, under the condition that the operating mechanism of the isolator and the operating mechanism of the circuit breaker are respectively provided with a protective cover, the blocking function of the protective cover is cancelled in some prior art, and in other prior art, the simplified interlocking structure is adopted to replace the existing hard interlocking piece, so that the operation can be realized when the operating sequence of the isolator and the circuit breaker is wrong, leading to increased security risks.

In addition, the operating device of current circuit breaker has the switching-off transmission shaft and closes a floodgate transmission shaft (synthetic transmission shaft), be equipped with the knob on the transmission shaft, so that carry out the manual operation to the operating device of circuit breaker under the circumstances such as maintenance, set up under the circumstances of protection casing for the operating device of circuit breaker, the transmission shaft stretches outside the protection casing, and be connected with the sealing washer before transmission shaft and protection casing, the setting of sealing washer makes the motion flexibility of transmission shaft descend, the operating device that leads to the circuit breaker probably appears phenomenon such as postponing when normal automatic control moves.

Disclosure of Invention

One of the objectives of the present invention is to provide an operating mechanism of an electrical switch with good protection effect and small axial dimension.

In order to achieve the above object, the present invention provides an operating mechanism of an electrical switch, comprising a main structure, a protective cover and a dynamic sealing structure, wherein the main structure comprises an installation framework and a driving spindle, the driving spindle is rotatably connected with the installation framework, a rotation axis of the driving spindle is along a first direction, and the driving spindle has a first end and a second end distributed along the first direction; the protective cover is provided with a first wall and a second wall which are distributed along a first direction, a protective cavity is formed between the first wall and the second wall, the installation framework is arranged in the protective cavity, and the installation framework is fixedly connected with the protective cover; the first wall is provided with a first through hole, the second wall is provided with a second through hole, the first end is positioned in the protective cavity and is opposite to the first through hole in the first direction, the second end penetrates out of the protective cavity from the second through hole, and a second sealing ring is connected between the second end and the second wall; the movable sealing structure comprises a mounting seat and a transfer shaft, the transfer shaft is fixedly connected with the driving main shaft, the mounting seat is provided with a third through hole, the transfer shaft is arranged in the third through hole in a penetrating mode and rotatably supported on the mounting seat, the movable sealing structure is arranged in the first through hole in a penetrating mode, a first sealing ring is sleeved on the periphery of the mounting seat in a tight fit mode, and the first sealing ring is in contact with one side wall surface of the first wall, which is back to the second wall.

Therefore, when the operating mechanism is applied to the ring main unit, the utility model discloses the setting of establishing the first sealing washer at the periphery cover of mount pad can realize simultaneously to operating mechanism and switch gas tank sealed, is favorable to reducing the size of operating mechanism in the first direction, is favorable to satisfying the ring main unit to the dimensional requirement of operating mechanism in the first direction to be favorable to reducing the quantity of sealing washer, is favorable to operating mechanism and ring main unit's structure succinct, is favorable to promoting economic nature; furthermore, the utility model discloses a first sealing washer when the installation only need overlap on the periphery wall of mount pad can, the installation of first sealing washer is simple and convenient.

The protection cover comprises a first half cover and a second half cover which are distributed along a first direction, a first wall is positioned on the first half cover, a second wall is positioned on the second half cover, the first half cover and the second half cover are fixedly connected in a sealing mode, and a protection cavity is defined by the first half cover and the second half cover.

In a further embodiment, the first half-shell is an injection-molded part and/or the second half-shell is an injection-molded part.

Therefore, the sink grooves (described later) can be conveniently machined on the first half cover and the second half cover, the installation space is conveniently provided for the sealing ring, and the sealing performance between the driving main shaft and the protective cover can be favorably improved.

In another preferred embodiment, the main body structure further comprises an operating shaft having a third end and a fourth end distributed along the first direction, the third end being located in the protection chamber; the second wall is also provided with a fourth through hole, the fourth end penetrates out of the protection cavity from the fourth through hole, and a third sealing ring is connected between the fourth end and the second wall.

In another preferred embodiment, the first wall has a first mounting post thereon, the first mounting post extending toward the second wall in a first direction; the installation framework comprises a first plate, and the first plate is fixedly connected with the first installation column.

It can be seen from above that, like this first wall also actually is used as a part of installation skeleton, and first wall exists as replacing the plate body in the outermost side among the prior art, therefore compare in prior art, the setting of first wall can not increase operating device's size in the first direction, further is favorable to reducing operating device's size in the first direction, is favorable to satisfying the requirement of looped netowrk cabinet to operating device in the first direction.

Further, the maximum size of the outer diameter of the mounting seat is not larger than the inner diameter of the first through hole.

Therefore, the structure of the first wall around the first through hole is not extruded by the mounting seat, and the first wall is not easy to deform and damage due to extrusion of the mounting seat; and, the installation of mount pad in first through-hole is more nimble like this, is favorable to reducing the installation degree of difficulty of dynamic seal structure.

Still another preferred scheme is that one side of second wall towards first wall has the second heavy groove, and the second heavy groove is sunken to the first wall dorsad, and the second through-hole is seted up on the bottom wall of second heavy groove, and the second sealing washer is located the second heavy groove.

Therefore, the second sinking groove is convenient to provide space for installing the second sealing ring, and long-term sealing between the second wall and the driving spindle is guaranteed.

Still another preferred scheme is that, the one side of first wall back to the second wall has first heavy groove, and first heavy groove is sunken towards the second wall, and first through-hole is seted up on the diapire of first heavy groove, and first sealing washer is located first heavy groove.

Therefore, on one hand, when the operating mechanism of the utility model is applied to the ring main unit, the outer side wall surface of the first wall can be in surface contact fit with the side wall (described below) of the box body, which is beneficial to avoiding the angle deflection of the operating mechanism on the side wall of the box body caused by the arrangement of the first sealing ring, and is beneficial to making the installation posture of the operating mechanism stable and regular; on the other hand, also can make first sealing washer have suitable extrusion deformation through setting up the first heavy groove of suitable degree of depth like this, avoid first sealing washer because receive too big/undersize's extrusion and lead to sealed inefficacy, guarantee that first sealing washer keeps good sealing performance for a long time under the effect of suitable extrusion force.

In a further aspect, a side of the first wall facing the second wall has a boss, and the first sink groove corresponds to a position of the boss in the first direction.

Therefore, the arrangement of the boss is favorable for offsetting the reduction of the first sink groove on the wall thickness of the first wall, keeping the wall thickness of the first wall around the first through hole in a thicker state and ensuring the structural strength of the first wall around the first through hole; on the other hand, the overall size of the operating mechanism in the first direction cannot be increased, the operating mechanism is compact in structure in the first direction, and the use requirement is met.

The second purpose of the utility model is to provide an operating device's the good just less looped netowrk cabinet of axial dimension of protecting effect.

In order to achieve the above object, the utility model provides a looped netowrk cabinet includes switch gas tank and aforementioned electrical switch's operating device, and the switch gas tank has the box lateral wall, and the handle hole has been seted up to the box lateral wall, and the protection casing is fixed on the box lateral wall, moves seal structure and wears to locate in the handle hole, and first sealing washer extrudees between box lateral wall and first wall.

From top to bottom, be convenient for satisfy operating device's protection requirement like this, and be convenient for satisfy operating device's dimensional requirement in the first direction.

Drawings

Fig. 1 is an external structural view of an embodiment of the operating mechanism of the present invention.

Fig. 2 is a sectional view of an embodiment of the operating mechanism of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a partially enlarged view at B in fig. 2.

Fig. 5 is a structural view of the second half cover 12 of the embodiment of the operating mechanism of the present invention hidden therein.

Fig. 6 is a partially enlarged view at C in fig. 5.

Fig. 7 is a partial enlarged view at D in fig. 5.

Fig. 8 is a partial enlarged view at E in fig. 5.

Detailed Description

Operating device and looped netowrk cabinet embodiment of electrical switch:

fig. 1 to 8 of the present embodiment adopt a unified spatial rectangular coordinate system (right-hand system) to indicate the relative position relationship between the components, wherein the Z-axis direction is the first direction, and the Y-axis direction is the second direction.

Referring to fig. 1 and 2, the operating mechanism of the present embodiment includes a main body structure and a protective cover 1, the main body structure includes a mounting frame 2, a driving spindle 3 and a dynamic seal structure 4, the protective cover 1 includes a first half cover 11 and a second half cover 12, the first half cover 11 and the second half cover 12 are both in a groove shape, the first half cover 11 has a first bottom wall 111 (an example of a first wall) and a first side wall 112 extending along an edge of the first bottom wall 111, the second half cover 12 has a second bottom wall 121 (an example of a second wall) and a second side wall 122 extending along an edge of the second bottom wall 121, the first bottom wall 111 and the second bottom wall 121 are distributed along a Z-axis direction, the first bottom wall 111 is located on a Z-axis negative side of the second bottom wall 121, the first side wall 112 protrudes from the first bottom wall 111 toward the second half cover 12 along the Z-axis positive direction, the second side wall 122 protrudes from the second bottom wall 121 toward the first half cover 11 along the negative Z-axis direction, the positive Z-axis end of the first side wall 112 is hermetically connected with the negative Z-axis end of the second side wall 122, the first half cover 11 and the second half cover 12 enclose a protection cavity, the mounting framework 2 is arranged in the protection cavity, and the mounting framework 2 is fixedly connected with the protection cover 1.

Referring to fig. 2, the mounting frame 2 has a first plate 21 and a second plate 22, the normal directions of the main surfaces of the first plate 21 and the second plate 22 are all along the Z-axis direction, the first bottom wall 111, the first plate 21, the second plate 22 and the second bottom wall 121 are sequentially distributed at intervals along the Z-axis direction, the first bottom wall 111 has a first mounting column 1111 protruding towards the first plate 21 along the Z-axis direction, the first plate 21 and the first mounting column 1111 are fixedly connected by a screw, the first plate 21 has a second mounting column 211 protruding towards the second plate 22 along the Z-axis direction (see fig. 5), and the second plate 22 and the second mounting column 211 are fixedly connected by a screw.

Referring to fig. 3 and 4, the first bottom wall 111 has a first through hole penetrating along the Z-axis direction, the second bottom wall 121 has a second through hole 1212 penetrating along the Z-axis direction, a Z-axis negative end (an example of a first end) of the driving spindle 3 is located in the protection cavity, the first through hole is located on the Z-axis negative side of the driving spindle 3 and is opposite to the Z-axis negative end of the driving spindle 3, a Z-axis positive end (an example of a second end) of the driving spindle 3 passes through the second through hole 1212 and out of the protection cavity, the driving spindle 3 and the second bottom wall 121 are in sealing connection by a first lip seal m1 (an example of a second seal), the Z-axis positive end of the driving spindle 3 is connected with a status indicator disk 10, and the status indicator disk 10 is located outside the protection cavity.

Preferably, referring to fig. 4, the second half cover 12 of the present embodiment is an injection molded part, the Z-axis negative side of the second bottom wall 121 has a second sinking groove 1211, the second sinking groove 1211 is recessed toward the Z-axis positive direction, the second through hole 1212 is opened on the groove bottom wall of the second sinking groove 1211, the first lip-shaped sealing ring m1 is located in the second sinking groove 1211, and the first lip-shaped sealing ring m1 is pressed between the peripheral wall of the second sinking groove 1211 and the peripheral wall of the driving spindle 3. The second sinking groove 1211 is arranged to provide a space for installing the first lip-shaped sealing ring m1, so as to ensure that the long-term sealing between the second bottom wall 121 and the driving spindle 3 is effective; moreover, since the second half cover 12 is an injection molded part, the second sinking groove 1211 can be directly formed by injection molding, and the processing difficulty of the second half cover 12 cannot be increased due to the arrangement of the second sinking groove 1211.

Preferably, the first sidewall 112 and the second sidewall 122 are sealed by a sealant. This facilitates the sealing of the connection of the first half shell 11 to the second half shell 12.

Referring to fig. 3, the dynamic seal structure 4 is connected to the Z-axis negative end of the driving spindle 3 and penetrates through the first through hole, the dynamic seal structure 4 includes an installation seat 41, a switching spindle 42 and a first seal ring 43, the installation seat 41 has a third through hole penetrating along the Z-axis direction, the switching spindle 42 penetrates through the third through hole and is rotatably supported on a hole wall of the third through hole through a bearing, the installation seat 41 penetrates through the first through hole, the Z-axis positive end of the switching spindle 42 is fixedly connected with the Z-axis end of the driving spindle 3, the first seal ring 43 is sleeved on the outer peripheral wall of the switching spindle 42 in a tight fit manner, and the first seal ring 43 is located on the Z-axis negative side of the first bottom wall 111.

Referring to fig. 3, the ring main unit of the present embodiment includes a switch air box, the switch air box has a box sidewall 200, the protection cover 1 is fixed on the box sidewall 200, an operation hole penetrating along the Z-axis direction is formed on the box sidewall 200, the mounting seat 41 is inserted into the operation hole, and the first sealing ring 43 is extruded between the box sidewall 200 and the first bottom wall 111.

In the embodiment, the operation mechanism and the switch air box can be simultaneously sealed only by arranging the first sealing ring 43, so that the size of the operation mechanism in the Z-axis direction is favorably reduced, the size requirement of the operation mechanism in the Z-axis direction is favorably met, the number of the sealing rings is favorably reduced, the structures of the operation mechanism and the ring main unit are simple, and the economical efficiency is favorably improved; in addition, the first sealing ring 43 of the present embodiment only needs to be sleeved on the outer circumferential wall of the mounting seat 41 during mounting, and the mounting process of the first sealing ring 43 is simple.

Moreover, in the prior art, generally, more than two plate bodies distributed along the axial direction of the driving spindle are adopted to form the mounting frame, for example, CN205384980U adopts three plate bodies distributed along the axial direction of the driving spindle to form the mounting frame, and in this embodiment, the first bottom wall 111 is adopted to replace the plate body connected to one side of the dynamic seal structure in the prior art, and the driving spindle 2 penetrates out of the protection cavity, so the positions of the first bottom wall 111 and the second bottom wall 121 do not exceed the axial size of the existing operating mechanism in the driving spindle, and therefore the setting of the first bottom wall 111 and the second bottom wall 121 does not increase the size of the operating mechanism in the Z-axis direction, which is further beneficial to meeting the size requirement of the operating mechanism in the Z-axis direction.

Preferably, the Z-axis negative side of the first bottom wall 111 has a first sunken groove 1112, the first sunken groove 1112 is recessed towards the Z-axis positive side, the first sealing ring 43 is located in the first sunken groove 1112, and the first sealing ring 43 is exposed outside the first sunken groove 1112 in a natural state. On the one hand, in the ring main unit of the embodiment, the Z-axis negative side wall surface of the first bottom wall 111 can be in surface contact fit with the side wall 200 of the box body, which is beneficial to avoiding the installation of the operating mechanism on the side wall 200 of the box body from angular deviation caused by the arrangement of the first sealing ring 43, and is beneficial to making the installation posture of the operating mechanism stable and regular; on the other hand, the first sealing ring 43 can have a proper extrusion deformation amount by arranging the first sinking groove 1112 with a proper depth, so that sealing failure caused by too large/too small extrusion of the first sealing ring 43 is avoided, and the first sealing ring 43 is ensured to maintain good sealing performance for a long time under the action of a proper extrusion force.

More preferably, the Z-axis positive side of the first bottom wall 111 has a boss 1113, the first sunken groove 1112 corresponds to the position of the boss 1113 in the Z-axis direction, and the boss 1113 is arranged to be beneficial to offset the reduction of the wall thickness of the first bottom wall 111 by the first sunken groove 1112, to keep the wall thickness of the first bottom wall 111 around the first through hole in a thicker state, and to ensure the structural strength of the first bottom wall 111 around the first through hole; on the other hand, the overall size of the operating mechanism in the Z-axis direction cannot be increased, the operating mechanism is beneficial to being compact in structure in the Z-axis direction, and the using requirement is favorably met.

Preferably, the maximum outer diameter of the mounting seat 41 is not greater than the aperture of the first through hole, so that the structure of the first bottom wall 111 around the first through hole is not pressed by the mounting seat 41, and thus the first bottom wall 111 is not easily deformed and damaged by the pressing of the mounting seat 41; in addition, the installation of the installation seat 41 in the first through hole is more flexible, which is beneficial to reducing the installation difficulty of the dynamic seal structure 4.

Referring to fig. 5 to 7, the main structure further includes a transmission shaft 5 (below 5a and 5b), a relay 6 (below 6a and 6b), and an operation shaft 7 (below 7a and 7b), wherein the combination of the transmission shaft 5, the relay 6, and the operation shaft 7 includes two sets, one set forms a switching-on operation unit a, the other set forms a switching-off operation unit b, the transmission shaft 5 and the operation shaft 7 are respectively rotatably mounted on the mounting frame 2, and a switching-on axis 42 of the transmission shaft 5 and a switching-on axis 42 of the operation shaft 7 are both along the Z-axis direction.

Specifically, referring to fig. 7, in the opening operation unit b, two transmission arms are fixed on the opening transmission shaft 5b, the two transmission arms are a first arm 51b and a second arm 52b, the first arm 51b and the second arm 52b both protrude outwards from the outer circumferential wall of the opening transmission shaft 5b in the radial direction, an opening transmission protrusion 71b protrudes outwards from the outer circumferential wall of the opening operation shaft 7b, a first torsion spring t1 is connected between the opening transmission shaft 5b and the mounting frame 2, a second torsion spring t2 is connected between the opening operation shaft 7b and the mounting frame 2, the opening relay 6b drives the opening transmission shaft 5b to rotate through the first arm 51b, the opening operation shaft 7b drives the transmission shaft 5 to rotate through the cooperation of the opening transmission protrusion 71b and the second arm 52b, the second arm 52b is located on the rotation path of the opening transmission protrusion 71b, and during normal operation, the rotation of the opening transmission shaft 5b is automatically controlled by the opening relay 6b, at this time, the second torsion spring t2 forces the opening operation shaft 7b to drive the opening transmission protrusion 71b to rotate out of the rotation range of the second arm 52b, i.e. the opening transmission protrusion 71b rotates to a position that does not affect the normal operation of the opening transmission shaft 5 b.

The cooperation between the opening operation shaft 7b and the second bottom wall 121 (including the cooperation between the second lip seal m 2) can be set with reference to the cooperation between the drive spindle 3 and the second bottom wall 121, except that the opening operation shaft 7b is fixedly connected to the opening knob 72b at the positive end (an example of the fourth end) of the Z-axis, specifically, the opening transmission protrusion 71b, the second arm 52b and the negative end (an example of the third end) of the Z-axis of the opening operation shaft 7b are all located in the protection cavity, the second bottom wall 121 is further provided with a fourth through hole (not shown) penetrating along the Z-axis direction, the positive end of the Z-axis of the opening operation shaft 7b passes through the protection cavity through the fourth through hole, the opening operation shaft 7b is hermetically connected to the second bottom wall 121 by a second lip seal m2 (an example of the third seal), the positive end of the Z-axis of the opening operation shaft 7b is fixedly connected to the opening knob 72b, the opening knob 72b is positioned outside the protective cavity; preferably, the Z-axis negative side of the second bottom wall 121 further has a third sunken groove (not shown), the second lip seal m2 is disposed in the third sunken groove, and the second lip seal m2 is pressed between a peripheral wall of the third sunken groove and a peripheral wall of the opening operation shaft 7 b.

Therefore, when manual operation is needed, the opening transmission shaft 5b can be controlled by screwing the opening knob 72 b; and when the operating mechanism normally operates, because the opening transmission convex part 71b rotates out of the rotating range of the second arm 52b, the opening operating shaft 7b cannot rotate at the moment, and the second lip-shaped sealing ring m2 arranged between the opening operating shaft 7b and the protective cover 1 cannot influence the normal operation of the opening transmission shaft 5b and the normal opening operation of the operating mechanism.

Referring to fig. 6, in the closing operation unit a, a third arm 53a is fixed on a closing transmission shaft 5a, the third arm 53a is a transmission arm, the third arm 53a protrudes outward from an outer circumferential wall of the closing transmission shaft 5a, a closing transmission protrusion 71a protruding outward is provided on an outer circumferential wall of a closing operation shaft 7a, a third torsion spring t3 is connected between the closing transmission shaft 5a and the mounting frame 2, a fourth torsion spring t4 is connected between the closing operation shaft 7a and the mounting frame 2, the closing relay 6a drives the closing transmission shaft 5a to rotate through an end of the third arm 53a far from the closing transmission shaft 5a, the closing operation shaft 7a drives the closing transmission shaft 5a to rotate through the cooperation of the closing transmission protrusion 71a and the third arm 53a, the third arm 53a is located on a rotation path of the closing transmission protrusion 71a, and in a normal operation state of the operation mechanism, the fourth torsion spring t4 forces the closing transmission protrusion 7a to drive the closing transmission protrusion 71a to rotate to the rotation of the third arm 53a The dynamic range is out.

The matching of the closing operation shaft 7a and the second bottom wall 121 (including the setting of the third lip-shaped sealing ring m 3) may be set by referring to the matching of the driving main shaft 3 and the second bottom wall 121, which is not described herein again, and the closing knob 72a is fixedly connected to the forward end of the Z-axis of the closing operation shaft 7a after penetrating through the protection cavity.

In this embodiment, the transmission scheme of the transmission shaft 5 to the driving spindle 3 may be set with reference to the prior art, and the matching scheme of the transmission shaft 5 and the relay 6 may also be set with reference to the prior art, for example, with reference to CN205384980U, which is not described herein again, and the improvement aspect made by this scheme lies in: in the embodiment, the operating shaft 7 rotatably connected with the mounting framework 2 is adopted to replace a button in the CN205384980U, so that the sealing difficulty between the operating shaft 7 and the protective cover 1 is favorably reduced, and the sealing performance between the operating shaft 7 and the protective cover 1 is favorably improved through the arrangement of the lip-shaped sealing ring; and, the operating shaft 7 of this embodiment is different axles with transmission shaft 5, and the protection intracavity is located completely to transmission shaft 5, and does not directly wear out the installation knob outside the protection chamber with transmission shaft 5, need not be connected the sealing washer between protection casing 1 and transmission shaft 5 like this, is favorable to avoiding the sealing washer to influence the flexibility of transmission shaft 5, avoids operating device to appear movement delay and card pause when being driven by relay 6, is favorable to guaranteeing operating device's function normal.

Referring to fig. 8, the main structure further includes a hard interlocking member 8 and a surface interlocking unit 9, the hard interlocking member 8 is slidably mounted on the mounting frame 2 along the Y-axis direction, the hard interlocking member 8 is located in the protection cavity, and the structure of the hard interlocking member 8 and the principle of realizing interlocking by limiting the position of the hard interlocking member 8 in the Y-axis direction can be set by referring to the prior art, for example, CN210110581U, and will not be described herein again.

The surface interlocking unit 9 includes an interlocking rotating shaft 91, a first swing arm 92, a second swing arm 93, a connecting shaft 94 and a support 95, the support 95 is fixed on the mounting frame 2, the interlocking rotating shaft 91 is rotatably connected with the support 95, the switching axis 42 of the interlocking rotating shaft 91 is along the Z-axis direction, the first swing arm 92 is fixedly connected with the Z-axis negative end of the interlocking rotating shaft 91, the second swing arm 93 is fixedly connected with the Z-axis positive end of the interlocking rotating shaft 91, the Z-axis negative end of the interlocking rotating shaft 91 and the first swing arm 92 are both located in the protective cavity, the second bottom wall 121 is further provided with a fifth through hole (not shown) penetrating along the Z-axis direction, the Z-axis positive end of the interlocking rotating shaft 91 penetrates out of the protective cavity through the fifth through hole, a fourth lip-shaped sealing ring m4 is arranged between the interlocking rotating shaft 91 and the second bottom wall 121, and the second swing arm 93 is located outside the protective cavity.

The engagement of the interlocking rotary shaft 91 and the second bottom wall 121 (including the arrangement of the fourth lip seal m 4) can be arranged by referring to the engagement of the driving spindle 3 and the second bottom wall 121, and will not be described in detail here.

The X-axis negative direction end of the first swing arm 92 is fixedly connected with the interlocking rotating shaft 91, the X-axis positive direction end of the first swing arm 92 is provided with a strip-shaped hole 921 extending along the X-axis direction and penetrating along the Z-axis direction, the hard interlocking piece 8 is provided with a connecting hole penetrating along the Z-axis direction at the Y-axis positive direction end, and the connecting shaft 94 penetrates through the connecting hole and the strip-shaped hole 921.

Because the surface interlocking unit 9 is arranged in the embodiment, the movement of the hard interlocking piece 8 in the Y-axis direction can be controlled by stirring the second swing arm 93 outside the protective cover 1, so that the operation mechanism of the isolator and the operation mechanism of the circuit breaker can still perform interlocking operation by using the hard interlocking piece 8 under the condition that the protective cover 1 is installed on the operation mechanism of the isolator, and the operation safety is improved.

Furthermore, since the interlocking rotary shaft 91 rotates relative to the second bottom wall 121, the difficulty of sealing connection between the interlocking rotary shaft 91 and the second bottom wall 121 is low, and the sealing performance between the interlocking rotary shaft 91 and the second bottom wall 121 is good by providing the fourth lip seal m 4.

In this embodiment, the strip-shaped hole 921 is formed at the positive end of the X axis of the first swing arm 92, because the movement rule of the first swing arm 92 has a difference with the movement rule of the hard interlocking piece 8, and because the strip-shaped hole 921 is formed, the positive end of the X axis of the first swing arm 92 and the movement rule of the hard interlocking piece 8 in the X axis direction are offset by sliding the connecting shaft 94 along the strip-shaped hole 921, optionally, in other embodiments of the present invention, a strip-shaped hole may be formed in the hard interlocking piece 8, for example, a strip-shaped hole with a length along the X axis direction is formed, and the purpose of the present invention can also be achieved; of course, in order to accommodate the structure of the existing hard interlock 8, it is preferable to provide the strip-shaped hole 921 on the first swing arm 92.

Of course, referring to fig. 1 and fig. 2, in the operating mechanism of this embodiment, the main structure further includes an energy storage gear shaft i and an energy storage interlocking shaft j, the energy storage gear shaft i and the energy storage interlocking shaft j respectively penetrate out of the protection cavity through corresponding through holes formed in the second bottom wall 121, and are respectively provided with corresponding sealing rings, the matching relationship between the energy storage gear shaft i and the second bottom wall 121 may refer to the matching relationship between the driving spindle 3 and the second bottom wall 121, and the matching relationship between the energy storage interlocking shaft j and the second bottom wall 121 may refer to the matching relationship between the driving spindle 3 and the second bottom wall 121, which is not described herein again.

Alternatively, in other embodiments of the present invention, the operating mechanism of the electrical switch may be the operating mechanism of the load switch, and may be the operating mechanism of the isolator, for example, the shield and the manner of engagement of the drive spindle with the shield may be applied to the operating mechanism of the load switch and to the operating mechanism of the isolator.

Finally, it should be emphasized that the above-described embodiments are merely preferred examples of the present invention, and are not intended to limit the invention, as those skilled in the art will appreciate that various changes and modifications may be made, and any and all modifications, equivalents, and improvements made, while remaining within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.

Claims (10)

1. The operating mechanism of the electrical switch comprises a main body structure, wherein the main body structure comprises an installation framework and a driving main shaft, the driving main shaft is rotatably connected with the installation framework, the rotating axis of the driving main shaft is along a first direction, and the driving main shaft is provided with a first end and a second end which are distributed along the first direction;

the method is characterized in that:

the protective cover is provided with a first wall and a second wall which are distributed along a first direction, a protective cavity is formed between the first wall and the second wall, the mounting framework is arranged in the protective cavity, and the mounting framework is fixedly connected with the protective cover;

the first wall is provided with a first through hole, the second wall is provided with a second through hole, the first end is positioned in the protection cavity and is opposite to the first through hole in the first direction, the second end penetrates out of the protection cavity from the second through hole, and a second sealing ring is connected between the second end and the second wall;

move seal structure and include mount pad and switching axle, the switching axle with drive spindle fixed connection, the mount pad has the third through-hole, the switching axle wears to locate in the third through-hole and rotationally support in on the mount pad, it wears to locate to move seal structure in the first through-hole, the periphery of mount pad is equipped with first sealing washer with the close fit mode cover, first sealing washer with dorsad of first wall a side wall face contact of second wall.

2. The operating mechanism of claim 1, wherein:

the protective cover comprises a first half cover and a second half cover which are distributed along the first direction, the first wall is located on the first half cover, the second wall is located on the second half cover, the first half cover and the second half cover are fixedly connected in a sealing mode, and the protective cavity is defined by the first half cover and the second half cover.

3. The operating mechanism of claim 2, wherein:

the first half-cover is an injection molded part, and/or the second half-cover is an injection molded part.

4. The operating mechanism of claim 1, wherein:

the body structure further comprises an operating shaft having a third end and a fourth end distributed along the first direction, the third end being located in the protection cavity;

the second wall is provided with a fourth through hole, the fourth end penetrates out of the protection cavity from the fourth through hole, and a third sealing ring is connected between the fourth end and the second wall.

5. The operating mechanism of claim 1, wherein:

the first wall has a first mounting post thereon extending in the first direction toward the second wall;

the mounting framework comprises a first plate, and the first plate is fixedly connected with the first mounting column.

6. The operating mechanism of claim 5, wherein:

the maximum size of the outer diameter of the mounting seat is not larger than the inner diameter of the first through hole.

7. The operating mechanism of claim 1, wherein:

the second wall is towards one side of first wall has the heavy groove of second, the heavy groove of second dorsad first wall is sunken, the second through-hole set up in on the diapire of the heavy groove of second, the second sealing washer is located in the heavy groove of second.

8. The operating mechanism according to any one of claims 1 to 7, wherein:

one side of the first wall, which faces away from the second wall, is provided with a first sinking groove, the first sinking groove faces the second wall and is sunken, the first through hole is formed in the bottom wall of the first sinking groove, and the first sealing ring is positioned in the first sinking groove.

9. The operating mechanism of claim 8, wherein:

the side of the first wall facing the second wall is provided with a boss, and the position of the first sunken groove corresponds to the position of the boss in the first direction.

10. Looped netowrk cabinet, including the switch gas tank, the switch gas tank has the box lateral wall, the handle hole has been seted up to the box lateral wall, its characterized in that:

the electrical switch further comprising an operating mechanism of any one of claims 1 to 9, wherein the protective cover is fixed to the side wall of the box body, the movable sealing structure is inserted into the operating hole, and the first sealing ring is pressed between the side wall of the box body and the first wall.

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