CN209785824U

CN209785824U - Combined electrical apparatus with ground connection interlocking function

Info

Publication number: CN209785824U
Application number: CN201920642262.6U
Authority: CN
Inventors: 周文
Original assignee: Zhejiang Tuoyuan Electric Co Ltd
Current assignee: Zhejiang Tuoyuan Electric Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2019-12-13
Anticipated expiration: 2029-05-07

Abstract

A combined electrical appliance with a grounding interlocking function solves the problem that an existing grounding switch can still be operated after a disconnecting switch is closed. It includes support body and mechanism case, the support body on be equipped with isolator and earthing switch, the support body on be equipped with and be used for operating isolator to open or closed isolation operation axle and be used for operating earthing switch to open or closed earthing operation axle, still include first interlocking device, first interlocking device have interlock when earthing switch closes and keep apart the first state of operation axle and when earthing switch opens the unblock make the second state of keeping apart operation axle free action. The beneficial effects of the utility model are that, set up first interlocking device for the operating axis is kept apart to interlocking when ground switch closes, avoids keeping apart the operating axis malfunction and causes the casualties. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Description

Combined electrical apparatus with ground connection interlocking function

Technical Field

The utility model relates to a combined electrical apparatus, concretely relates to combined electrical apparatus with ground connection interlocking function.

Background

A composite appliance is a device which integrates two or more appliances into a whole according to wiring requirements, and the appliances still keep original performances. The structure is compact, the appearance and the installation size are small, the use is convenient, the performance of each electric appliance can be better coordinated and matched, and the electric appliances can be divided into a low-voltage combined electric appliance and a high-voltage combined electric appliance according to the voltage.

The high-voltage combined electrical apparatus is divided into an open type and a totally enclosed type according to an insulation structure. The former uses an isolating switch or a breaker as a main body and combines a current transformer, a voltage transformer, a cable head and other elements together. In the latter, the high-voltage charged parts of the components are sealed in a grounded metal shell, the shell is filled with gas, oil or solid insulating medium with good insulating property, and the components (generally comprising a circuit breaker, a disconnecting switch, a grounding switch, a voltage transformer, a current transformer, a bus, a lightning arrester, a cable terminal and the like) are sequentially connected and integrated into a whole according to the wiring requirement. The existing combined electrical apparatus has a simple structure, does not have a grounding interlocking function, and particularly can still enter the operation of the isolating switch when the grounding switch is closed, so that greater potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

For solving the problem that the isolator still can operate after the existing earthing switch is closed among the background art, the utility model provides a combined electrical apparatus with earthing interlocking function.

The technical scheme of the utility model is that: the utility model provides a combined electrical apparatus with ground connection interlocking function, includes support body and mechanism case, the support body on be equipped with isolator and earthing switch, the support body on be equipped with and be used for operating isolator to open or closed isolation operation axle and be used for operating earthing switch to open or closed ground connection operation axle, still include first interlocking device, first interlocking device have when earthing switch closes interlock isolation operation axle's first state and when earthing switch opens the unblock make the second state of isolating operation axle free movement.

As an improvement of the present invention, the first interlocking mechanism has a first state of interlocking the ground operation shaft when the disconnecting switch is closed and a second state of unlocking the ground operation shaft when the disconnecting switch is opened so that the ground operation shaft can move freely.

As a further improvement of the present invention, the first interlocking mechanism includes a first interlocking cam, a second interlocking cam and a positioning wheel, the outer surface of the first interlocking cam and the second interlocking cam all offsets with the positioning wheel, and the positioning wheel is disposed on the frame body and slides with the frame body.

As a further improvement, first interlocking cam on be equipped with first breach groove and first interlocking convex surface, second interlocking cam on be equipped with second breach groove and second interlocking convex surface, when isolating switch is closed the locating wheel is pressed in second breach inslot interlocking ground connection operating axis by first interlocking convex surface top, when ground connection switch is closed the locating wheel be pressed in first breach inslot interlocking by second interlocking convex surface top and keep apart the operating axis.

As a further improvement, the support body on be equipped with spacing hole, the locating wheel locate between first interlocking cam and the second interlocking cam surface, the locating wheel locate spacing downthehole and with the support body cooperation of sliding.

As a further improvement, first breach groove and second breach groove be the arcwall face of inside sunken formation, the locating wheel locate spacing downthehole through the installation round pin, the locating wheel cover locate on the installation round pin and can rotate around the installation round pin.

As a further improvement of the utility model, still include second interlocking mechanism, second interlocking mechanism have when ground switch closes to shelter from the first position of keeping apart the operation axle and the unblock exposes the second position that keeps apart the operation axle and make to keep apart the operation axle free action, first interlocking mechanism when being in the first state second interlocking mechanism be in the first position.

As a further improvement, the second interlocking mechanism include the ground connection turning arm, the ground connection turning arm locate on the ground connection operation axis, the ground connection turning arm on be equipped with the shielding plate, the mechanism case on be equipped with and keep apart operation hole and ground connection operation hole, the shielding plate have when ground connection switch closes the primary importance and the unblock that shelter from the isolation operation hole expose the second place that keeps apart the operation axis and make the free action of isolation operation axis.

As a further improvement, the grounding connecting lever is connected with the shielding plate through the linkage plate, the grounding connecting lever is connected with the grounding operation shaft in a linkage manner, and the linkage plate and the shielding plate are in horizontal reciprocating motion relative to the mechanism box.

As a further improvement of the utility model, the linkage plate and the shielding plate are provided with guide chutes for inserting the pin shafts.

The beneficial effects of the utility model are that, set up first interlocking device for the operating axis is kept apart to interlocking when ground switch closes, avoids keeping apart the operating axis malfunction and causes the casualties. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the embodiment of the present invention with the mechanism phase 2 removed.

Fig. 3 is a schematic structural diagram of the embodiment of the present invention with the mechanism phase 2 removed.

Fig. 4 is a schematic structural view of the first interlocking mechanism 5 in fig. 3.

Fig. 5 is a schematic structural view of the first interlock cam 51 of fig. 5.

In the figure, 1, a frame body; 11. a limiting hole; 2. a mechanism box; 21. isolating the operation hole; 22. a grounding operation hole; 3. an isolating switch; 31. isolating the operating shaft; 4. A grounding switch; 41. a ground operating shaft; 5. a first interlock mechanism; 51. a first interlock cam; 511. a first notch groove; 512. a first interlocking convex surface; 52. a second interlock cam; 521. a second notch groove; 522. a second interlocking convex surface; 53. positioning wheels; 54. mounting a pin; 6. a second interlocking mechanism; 61. a grounding crank arm; 62. a shielding plate; 63. a linkage plate; 64. a guide chute.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

As shown by fig. 1 and fig. 2-5, a combined electrical apparatus with a grounding interlocking function includes a frame body 1 and a mechanism box 2, the frame body 1 is provided with an isolating switch 3 and a grounding switch 4, the frame body 1 is provided with an isolating operation shaft 31 for operating the isolating switch 3 to be opened or closed and a grounding operation shaft 41 for operating the grounding switch 4 to be opened or closed, and further includes a first interlocking mechanism 5, and the first interlocking mechanism 5 has a first state for interlocking the isolating operation shaft 31 when the grounding switch is closed and a second state for unlocking to enable the isolating operation shaft 31 to freely act when the grounding switch 4 is opened. The beneficial effects of the utility model are that, set up first interlocking device for the operating axis is kept apart to interlocking when ground switch closes, avoids keeping apart the operating axis malfunction and causes the casualties. The utility model discloses simple structure still has, convenient assembling, and the action is reliable, advantages such as long service life.

The first interlock mechanism 5 has a first state in which the disconnecting switch 3 is closed and the ground operation shaft 41 is interlocked, and a second state in which the disconnecting switch 3 is opened and the ground operation shaft 41 is unlocked and freely moved. According to the structure, forward interlocking and reverse interlocking of the isolating switch and the grounding switch can be realized through the first interlocking mechanism, namely the isolating switch can interlock the grounding switch when being closed, misoperation opening of the grounding switch is avoided, the grounding switch can reversely interlock the isolating switch when being closed, and closing of the isolating switch is avoided. Therefore, the structure enables the product to be simple in structure and reliable in interlocking.

The first interlocking mechanism 5 comprises a first interlocking cam 51, a second interlocking cam 52 and a positioning wheel 53, the outer surfaces of the first interlocking cam 51 and the second interlocking cam 52 are respectively abutted against the positioning wheel 53, and the positioning wheel 53 is arranged on the frame body 1 and is in sliding fit with the frame body 1. The utility model discloses an earthing switch and isolator's interlocking is realized to first interlocking cam, second interlocking cam and locating wheel, simple structure, and the action is steady, and the interlocking is reliable. The first interlocking mechanism and the mechanism box are arranged on two sides of the frame body, so that the space of a product is reasonably utilized, and the installation is convenient. Specifically speaking, a first interlocking cam is arranged on the isolation operating shaft, a second interlocking cam is arranged on the grounding operating shaft, and the positioning wheel is arranged on the support and between the first interlocking cam and the second interlocking cam.

The first interlocking cam 51 is provided with a first notched groove 511 and a first interlocking convex surface 512, the second interlocking cam 52 is provided with a second notched groove 521 and a second interlocking convex surface 522, the positioning wheel 53 is pressed into the second notched groove 521 from the top of the first interlocking convex surface 512 when the disconnecting switch 3 is closed to interlock with the ground operating shaft 41, and the positioning wheel 53 is pressed into the first notched groove 511 from the top of the second interlocking convex surface 522 when the grounding switch 4 is closed to interlock with the isolation operating shaft 31. The utility model discloses a reciprocating of locating wheel and realize earthing switch and isolator's interlocking with the cooperation of breach groove, interlocking convex surface, simple structure, the action is steady, and the interlocking is reliable.

The frame body 1 on be equipped with spacing hole 11, locating wheel 53 locate between first interlocking cam 51 and second interlocking cam 52 surface, locating wheel 53 locate in spacing hole 11 and with the cooperation of sliding of frame body 1. Specifically, the first notched groove 511 and the second notched groove 521 are both arc-shaped surfaces formed by being recessed inwards, the positioning wheel 53 is arranged in the limiting hole 11 through the mounting pin 54, and the positioning wheel 53 is sleeved on the mounting pin 54 and can rotate around the mounting pin 54. The setting in breach groove is convenient for and interlocking convex surface cooperation locking positioning wheel makes the product realize earthing switch and isolator's interlocking through the positioning wheel, simple structure, and the action is steady, and the interlocking is reliable. The cooperation of locating wheel and arcwall face can be quick realization operating mode change again in operation process, simple structure, the action is reliable.

The utility model discloses still include second interlocking mechanism 6, second interlocking mechanism 6 have when earthing switch 4 is closed and shelter from the first position of keeping apart operation axle 31 and the unblock exposes the second position that keeps apart operation axle 31 and make to keep apart operation axle 31 free action, first interlocking mechanism 5 when being in the first state second interlocking mechanism 6 be in the first position. The second interlocking mechanism is arranged, so that the grounding switch can avoid the action of the isolation operation shaft when being switched on, the isolation switch is further interlocked, and the interlocking is reliable.

Second interlocking mechanism 6 include ground connection turning arm 61, ground connection turning arm 61 locate on ground connection operation axle 41, ground connection turning arm 61 on be equipped with shielding plate 62, mechanism case 2 on be equipped with and keep apart operation hole 21 and ground connection operation hole 22, shielding plate 62 have when earthing switch 4 is closed the primary importance and the unblock that shelter from isolation operation hole 21 expose the second place that keeps apart operation axle 31 and make isolation operation axle 31 free movement. The setting of shielding plate avoids inserting the handle rotation isolation operating axis when earthing switch closes a floodgate, simple structure, and the interlocking is reliable.

The grounding crank arm 61 is connected with the shielding plate 62 through a linkage plate 63, the grounding crank arm 61 is connected with the grounding operation shaft 41 in a linkage manner, and the linkage plate 63 and the shielding plate 62 horizontally reciprocate relative to the mechanism box 2. Specifically, the linkage plate 63 and the shielding plate 62 are provided with guide sliding grooves 64 for inserting the pin shafts. The structure can reliably convert the rotation of the reception connecting lever into horizontal reciprocating motion of the linkage plate and the shielding plate, so that the shielding plate can quickly and reliably move to shield the isolation operation shaft.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A combined electrical appliance with a grounding interlocking function comprises a frame body (1) and a mechanism box (2), wherein an isolating switch (3) and a grounding switch (4) are arranged on the frame body (1), and the combined electrical appliance is characterized in that an isolating operation shaft (31) for operating the isolating switch (3) to be opened or closed and a grounding operation shaft (41) for operating the grounding switch (4) to be opened or closed are arranged on the frame body (1), and the combined electrical appliance further comprises a first interlocking mechanism (5), wherein the first interlocking mechanism (5) has a first state for interlocking the isolating operation shaft (31) when the grounding switch is closed and a second state for unlocking to enable the isolating operation shaft (31) to freely act when the grounding switch (4) is opened.

2. A combined electrical apparatus with earth interlocking function according to claim 1, characterized in that said first interlocking mechanism (5) has a first state of interlocking the earth operating shaft (41) when the disconnector (3) is closed and a second state of unlocking to allow the earth operating shaft (41) to move freely when the disconnector (3) is opened.

3. The combined electrical apparatus with the grounding interlocking function according to claim 2, wherein the first interlocking mechanism (5) comprises a first interlocking cam (51), a second interlocking cam (52) and a positioning wheel (53), the outer surfaces of the first interlocking cam (51) and the second interlocking cam (52) are respectively abutted against the positioning wheel (53), and the positioning wheel (53) is arranged on the frame body (1) and is in sliding fit with the frame body (1).

4. A combined electrical apparatus with a ground interlock function according to claim 3, wherein the first interlock cam (51) is provided with a first notch groove (511) and a first interlock convex surface (512), the second interlock cam (52) is provided with a second notch groove (521) and a second interlock convex surface (522), the positioning wheel (53) is pressed into the second notch groove (521) by the first interlock convex surface (512) to interlock with the ground operation shaft (41) when the disconnecting switch (3) is closed, and the positioning wheel (53) is pressed into the first notch groove (511) by the second interlock convex surface (522) to interlock with the isolation operation shaft (31) when the grounding switch (4) is closed.

5. the combined electrical apparatus with the grounding interlocking function according to claim 4, wherein the frame body (1) is provided with a limiting hole (11), the positioning wheel (53) is arranged between the outer surfaces of the first interlocking cam (51) and the second interlocking cam (52), and the positioning wheel (53) is arranged in the limiting hole (11) and is in sliding fit with the frame body (1).

6. The combined electrical apparatus with the grounding interlocking function according to claim 5, wherein the first notched groove (511) and the second notched groove (521) are both arc-shaped surfaces formed by being recessed inwards, the positioning wheel (53) is arranged in the limiting hole (11) through the mounting pin (54), and the positioning wheel (53) is sleeved on the mounting pin (54) and can rotate around the mounting pin (54).

7. A switchgear with ground interlock function according to claim 1, characterized by further comprising a second interlock mechanism (6), said second interlock mechanism (6) having a first position for shielding said disconnecting operation shaft (31) when said ground switch (4) is closed and a second position for unlocking said disconnecting operation shaft (31) to expose said disconnecting operation shaft (31) so that said disconnecting operation shaft (31) is free to move, said first interlock mechanism (5) being in said first position when said second interlock mechanism (6) is in said first state.

8. The combined electrical apparatus with the grounding interlocking function according to claim 7, characterized in that the second interlocking mechanism (6) comprises a grounding connecting lever (61), the grounding connecting lever (61) is arranged on the grounding operation shaft (41), a shielding plate (62) is arranged on the grounding connecting lever (61), an isolation operation hole (21) and a grounding operation hole (22) are arranged on the mechanism box (2), and the shielding plate (62) has a first position for shielding the isolation operation hole (21) when the grounding switch (4) is closed and a second position for unlocking and exposing the isolation operation shaft (31) to enable the isolation operation shaft (31) to freely move.

9. The combined electrical apparatus with the grounding interlocking function as claimed in claim 8, wherein the grounding crank arm (61) is connected with the shielding plate (62) through a linkage plate (63), the grounding crank arm (61) is in linkage connection with the grounding operation shaft (41), and the linkage plate (63) and the shielding plate (62) both horizontally reciprocate relative to the mechanism box (2).

10. The combined electrical apparatus with the grounding interlocking function as claimed in claim 9, wherein the linkage plate (63) and the shielding plate (62) are provided with guide chutes (64) for inserting the pin shafts.