CN220984466U - Combined switch electrical appliance with fusing protection function - Google Patents

Abstract

The utility model discloses a combined switch electrical appliance with a fusing protection function, which comprises a vacuum circuit breaker arranged on a shell frame, a fuse and a separating brake mechanism, wherein the separating brake mechanism comprises a separating brake half shaft structure which is rotatably arranged on a mechanism plate, a transmission structure is arranged between the fuse and the separating brake mechanism, the transmission structure comprises a driving shaft which is rotatably arranged on the shell frame, a fuse top plate which is fixedly connected with the driving shaft, and a fuse swing arm which is rotatably arranged between the separating brake half shaft structure and the driving shaft, when the fuse is fused, the fuse swing arm is impacted on the fuse top plate through a thimble to push the driving shaft to rotate, so that the fuse swing arm is driven by the driving shaft to trigger the separating brake half shaft structure to realize tripping rotation.

Description

Combined switch electrical appliance with fusing protection function

Technical Field

The utility model relates to the technical field of power supply and distribution, in particular to a combined switch electrical appliance with a fusing protection function.

Background

With the continuous development of national economy, the current power supply and distribution lines need to be frequently used for combined switch appliances, and the combined switch appliances are devices which form two or more than two kinds of appliances into a whole according to wiring requirements and keep the original performance of each appliance. The conventional common combined switch electrical appliance comprises operating elements such as a vacuum circuit breaker, a disconnecting switch, a grounding switch, an operating mechanism and the like, and the operating mechanism enables a vacuum arc-extinguishing chamber to be switched on or off through a transmission mechanism so as to realize on-off of a circuit.

In actual use, the fuse passes through the brake separating mechanism in drive mechanism and the operating device, brake separating mechanism passes through main shaft drive circuit breaker pull rod action and controls vacuum interrupter brake separating, drive mechanism includes the fuse transmission shaft, baffle turning arm and fuse pull rod, baffle swing arm's one end and the cooperation of fuse thimble, its other end is connected with the fuse transmission shaft through the fuse pull rod, the connecting axle swing arm rethread connecting rope that the fuse transmission shaft set up, the connecting plate is connected with brake separating mechanism, drive brake separating mechanism action in order to realize the circuit breaker brake separating after making the fuse. However, the whole transmission structure of the existing fuse is complex, the installation and maintenance are relatively inconvenient, the manufacturing cost is increased, and the stay ropes in the transmission mode are easily affected by the environment to generate thermal expansion and cold contraction changes, so that the transmission error is large, and the usability between the fuse and the circuit breaker can be affected.

Disclosure of utility model

Therefore, the utility model aims to solve the technical problems that the transmission structure between the fuse and the opening mechanism is complex, and the stay cord in the transmission structure is easy to be influenced by the environment to generate thermal expansion and cold contraction changes, so that the transmission error is large and the service performance of the product is influenced.

In order to solve the technical problems, the utility model provides a combined switch electrical appliance with a fusing protection function, which comprises a vacuum circuit breaker and a fuse arranged in a shell frame, and an operating device arranged on one side of the shell frame, wherein the operating device comprises a mechanism plate and a brake separating mechanism for triggering brake separating action of the vacuum circuit breaker, the brake separating mechanism comprises a brake separating half shaft structure rotatably arranged on the mechanism plate, a transmission structure is arranged between the fuse and the brake separating mechanism, and the transmission structure comprises:

the driving shaft is rotatably arranged on the shell frame and extends to one side of the mechanism plate;

The fuse top plate is fixedly connected to the driving shaft and is positioned on the upper side of the ejector pin of the fuse;

The fuse swing arm is rotatably arranged between the brake-separating half shaft structure and the driving shaft, and the driving shaft is connected with the fuse swing arm through a connecting structure; the fuse top plate drives the driving shaft to rotate when being impacted by the thimble, so that the fuse swing arm triggers the brake-separating half shaft structure to release and rotate under the driving of the driving shaft.

In the above combined switch electrical apparatus, the connecting structure comprises a connecting plate which is arranged on the driving shaft in a linkage way, and the connecting plate is movably connected with the swing arm of the fuse.

In the combined switch electrical appliance, the fuse swing arm is rotatably arranged on the mechanism plate through the positioning shaft, one end of the fuse swing arm is provided with a strip-shaped hole, the fuse swing arm penetrates through the strip-shaped hole through the connecting piece to be connected with the connecting plate, and the fuse swing arm is pushed by the connecting plate to slide along the strip-shaped hole.

In the above-mentioned combination switch electrical apparatus, the drive shaft includes a square shaft portion rotatably disposed on side plates on both sides of the housing, and a circular shaft portion connected to one end of the square shaft portion and extending out of the housing along an axial direction of the drive shaft, and one end of the connecting plate is fixed to the circular shaft portion.

In the above combined switch electrical apparatus, the other end of the connecting plate is provided with a screw hole structure corresponding to the bar hole, and the connecting piece is a screw structure which penetrates through the bar hole and is fixed in the screw hole structure.

In the above-mentioned combination switch electrical apparatus, the brake-separating half-shaft structure includes the rotatable semi-shaft body that stretches out the mechanism board, and fixed connection is in driving lever on the semi-shaft body, the driving lever is located on the motion path of fuse swing arm, the driving lever is under the effect of pushing against the fuse swing arm drive the semi-shaft body rotates.

In the above-mentioned combination switch electrical apparatus, one end of fuse roof pass through fastener fixed connection Fang Zhoubu, its other end extension department is in fuse top is relative with the thimble, the fuse roof is provided with three in square shaft portion interval.

The combined switch electrical appliance comprises the isolating switch, the vacuum circuit breaker and the grounding switch which are arranged in the shell frame from top to bottom, wherein the vacuum circuit breaker is arranged in the shell frame in an extending mode along the width direction of the shell frame, and the fuse is arranged below the vacuum circuit breaker in an extending mode along the height direction of the shell frame.

In the above-mentioned combination switch electrical apparatus, the shell frame includes upper casing and lower casing, be provided with three isolator and three vacuum circuit breaker in the upper casing respectively, be provided with three earthing switch and three lower termination in the lower casing respectively the fuse is connected between vacuum circuit breaker and the lower termination.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

1. In the combined switch electrical appliance provided by the utility model, the fuse is connected with the brake-separating half shaft structure of the brake-separating mechanism through the fuse top plate, the driving shaft and the fuse swing arm, particularly, when the fuse is fused, the fuse is impacted on the fuse top plate through the ejector pin and the driving shaft is pushed to rotate, so that the fuse swing arm triggers the brake-separating half shaft structure to trip and rotate under the driving of the driving shaft, the brake-separating half shaft structure drives the vacuum circuit breaker through the brake-separating mechanism to realize brake separation after tripping action, the purpose of protecting the vacuum circuit breaker against high-current short circuit is achieved through the fuse, the transmission structure between the fuse and the brake-separating mechanism is simple to set up, the transmission is reliable in cooperation, the transmission mode of a traditional pull rope is avoided, the structural layout is reasonably optimized, the installation of parts is reduced, the installation and the maintenance are also convenient, the manufacturing cost is reduced, the design is guaranteed, the brake-separating mechanism action can be triggered quickly and accurately after the fuse is fused, and the product service performance and safety are improved.

2. The utility model provides a combined switch electrical appliance, wherein a driving shaft is movably connected with a fuse swing arm, in particular to a strip-shaped hole is formed at one end of the fuse swing arm, the connecting piece penetrates through the strip-shaped hole and is fixedly connected with the driving shaft, the connecting piece can move in the strip-shaped hole, and the driving shaft and the fuse swing arm are matched through the connecting plate and the connecting piece to transmit motion and force, so that the driving shaft drives the fuse swing arm to rotate towards one side close to a closing half shaft structure when the connecting plate rotates along with the driving shaft, and the closing half shaft structure is triggered by the fuse swing arm to complete tripping action.

3. In the combined switch electrical appliance provided by the utility model, the action of the brake-separating half shaft structure is to keep the energy storage spring in the brake-separating mechanism in an energy storage state, so that the energy storage spring starts to release energy storage after the brake-separating half shaft structure is tripped, the brake-separating mechanism drives the vacuum circuit breaker to realize brake separation under the energy release state, the brake-separating half shaft structure consists of a half shaft body and a deflector rod, the deflector rod is positioned on the moving path of the fuse swing arm according to the brake-separating half shaft structure, and the deflector rod rotates towards one side close to the brake-separating half shaft when the fuse swing arm is driven by the acting force of the driving shaft and pushes against the deflector rod, so that the deflector rod drives the half shaft body to trip and rotate, and the brake-separating action of the vacuum circuit breaker is realized through the brake-separating mechanism.

4. According to the combined switch electrical appliance provided by the utility model, the isolating switch, the vacuum circuit breaker and the grounding switch are arranged in the shell from top to bottom, the vacuum circuit breaker is arranged in the extending manner along the width direction of the shell, and the fuse is arranged below the vacuum circuit breaker in the extending manner along the height direction of the shell, and the position structure of the vacuum circuit breaker is reasonably optimized, so that the design is beneficial to reducing the height and the volume of the whole product, and the product structure is more compact.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of a perspective structure of a combined switch with fuse protection according to the present utility model;

fig. 2 is a schematic diagram of the internal structure of the combined switch electric appliance of the present utility model;

FIG. 3 is a schematic view of a partial enlarged structure of the combined switch electric appliance of the present utility model, particularly illustrating a transmission structure;

Fig. 4 is a schematic diagram of a connection structure between a fuse and a breaking mechanism according to the present utility model.

Reference numerals illustrate: 1. a housing; 2. a vacuum circuit breaker; 3. a fuse; 4. an operating device; 41. a mechanism plate; 5. a brake-separating half shaft structure; 51. a deflector rod; 6. a drive shaft; 61. a square shaft portion; 62. a circular shaft portion; 7. a fuse top plate; 8. a fuse swing arm; 81. a bar-shaped hole; 82. a connecting piece; 9. a connecting plate; 10. an isolating switch; 11. a grounding switch; 12. and a lower wiring device.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Examples

The present embodiment is specifically described below with reference to the accompanying drawings:

The embodiment provides a combined switch electrical apparatus with a fuse protection function as shown in fig. 1-4, which comprises a vacuum circuit breaker 2 and a fuse 3 arranged in a shell frame 1, and an operating device 4 arranged on one side of the shell frame 1, wherein the operating device 4 comprises a mechanism plate 41 and a brake separating mechanism for triggering brake separating action of the vacuum circuit breaker 2, the brake separating mechanism comprises a brake separating half shaft structure 5 rotatably arranged on the mechanism plate 41, a transmission structure is arranged between the fuse 3 and the brake separating mechanism, and the transmission structure comprises:

a drive shaft 6 rotatably provided in the housing 1 and extending toward the mechanism plate 41;

A fuse top plate 7 fixedly connected to the driving shaft 6 and located above the ejector pin of the fuse 3;

The fuse swing arm 8 is rotatably arranged between the brake-separating half shaft structure 5 and the driving shaft 6, and the driving shaft 6 is connected with the fuse swing arm 8 through a connecting structure; the fuse top plate 7 drives the driving shaft 6 to rotate when being impacted by the ejector pin, so that the fuse swing arm 8 triggers the brake-separating half shaft structure 5 to release and rotate under the driving of the driving shaft 6.

The above embodiment is a core technical solution in this embodiment, the fuse 3 is connected with the brake-opening half shaft structure 5 of the brake-opening mechanism through the fuse top plate 7, the driving shaft 6 and the fuse swing arm 8, and the brake-opening half shaft structure 5 has the function of keeping the energy storage spring in the brake-opening mechanism in an energy storage state, so that the energy storage spring starts to release energy storage after the brake-opening half shaft structure 5 takes a tripping action, and the brake-opening mechanism drives the vacuum circuit breaker to realize brake opening through the main shaft under the energy release state. The specific working process is as follows: the utility model provides a fuse 3 takes place to blow, strike on fuse roof 7 through the thimble, and promote drive shaft 6 rotation, thereby make fuse swing arm 8 trigger brake half shaft structure 5 trip rotation under drive shaft 6's drive, this brake half shaft structure 5 can realize brake separating through brake separating mechanism drive vacuum circuit breaker 2 after taking place the tripping action, thereby play heavy current short-circuit protection's purpose to vacuum circuit breaker 2 through fuse 3, the transmission structure between fuse and the brake separating mechanism of this technical scheme sets up simply, the cooperation transmission is reliable, avoid adopting the transmission mode of traditional stay cord again, reasonable optimization structural layout, reduce installation spare part, also facilitate the installation maintenance, be favorable to reducing manufacturing cost, the design guarantees that the fuse can be quick and accurate trigger brake separating mechanism action in order to realize vacuum circuit breaker brake separating after the fusing, promote product performance and safety.

The specific arrangement between the driving shaft and the fuse swing arm is described in detail below with reference to fig. 2-4:

According to link to each other through connection structure between drive shaft 6 and the fuse swing arm 8, wherein, connection structure is including the linkage setting being in link plate 9 on the drive shaft 6, link plate 9 with fuse swing arm 8 swing joint, further preferably set up, fuse swing arm 8 through the locating shaft rotate set up in mechanism board 41, the one end of fuse swing arm 8 is equipped with bar hole 81, pass bar hole 81 through connecting piece 82 with link plate 9 links to each other, connecting piece 82 can follow bar hole 81 slidable under the promotion of link plate 9. The design is that the motion and force are transmitted between the driving shaft 6 and the fuse swing arm 8 through the matching of the connecting plate 9 and the connecting piece 82, so that the connecting plate 9 pushes the fuse swing arm 8 to rotate towards one side close to the closing half shaft structure when rotating along with the driving shaft 6, and the closing half shaft structure is triggered by the fuse swing arm 8 to complete the tripping action.

As a specific structural arrangement, the driving shaft 6 comprises a square shaft portion 61 rotatably arranged on side plates at two sides of the housing 1, and a round shaft portion 62 connected to one end of the square shaft portion 61 and extending out of the housing 1 along the axial direction of the driving shaft 6, two ends of the square shaft portion 61 are in a circular structure and rotatably arranged on two bearing sleeves, the two bearing sleeves are fixedly arranged on the side plates at two sides of the housing 1, one end of the connecting plate 9 is fixedly arranged on the round shaft portion 62, the other end of the connecting plate 9 is provided with a screw hole structure corresponding to the bar hole 81, and the connecting piece 82 is a screw structure which is fixedly arranged in the screw hole structure after passing through the bar hole 81. This structural design has realized swing joint between link plate 9 and the fuse swing arm 8, and the installation is connected comparatively conveniently, improves installation effectiveness, and this kind of structure sets up, when the one end of fuse swing arm 8 received the promotion of link plate 9, makes the fuse swing arm is rotatory certain angle round the locating shaft to promote through the other end of fuse swing arm 8 the effect that the rotation was realized to closing a floodgate semi-axis structure 5.

As shown in fig. 2-4, the brake-separating half-shaft structure 5 includes a half-shaft body of a rotatable extending mechanism plate 41, and a deflector rod 51 fixedly connected to the half-shaft body, the deflector rod 51 is located on a moving path of the fuse swing arm 8, the deflector rod 51 drives the half-shaft body to rotate under the pushing action of the fuse swing arm 8, and the brake-separating half-shaft structure is arranged to rotate towards one side close to the brake-separating half-shaft when the fuse swing arm 8 is driven by the acting force of the driving shaft 6 and pushes against the deflector rod 51, so that the deflector rod 51 drives the half-shaft body to release and rotate, and the brake-separating action of the vacuum circuit breaker is realized through the brake-separating mechanism.

As shown in fig. 3-4, one end of the fuse top plate 7 is fixedly connected to the square shaft 61 through a fastener, the other end of the fuse top plate is extended to be located at the top of the fuse 3 and opposite to the ejector pins, three fuse top plates 7 are arranged on the square shaft 61 at intervals and are just matched with three fuses 3 arranged on the shell frame, the fuse top plate 7 is of a square structure, the square shaft structure of the driving shaft 6 can be just attached to the fuse top plate 7, flatness and action consistency of a plurality of fuse top plates 7 mounted on the driving shaft 6 are guaranteed, and the fuse top plates 7 are extended to one side of the fuse to rotate under self gravity to be propped against the top of the fuse, so that once the fuse 3 is blown due to a short circuit fault, the ejector pins can be impacted on the fuse top plates 7 to drive the driving shaft 6 to rotate, and then the swing arm 8 is used for driving the opening half shaft structure 5 to realize a tripping action.

In this embodiment, as shown in fig. 1, the combined switch apparatus includes a disconnecting switch 10, a vacuum circuit breaker 2 and a grounding switch 11 which are arranged in the housing 1 from top to bottom, the vacuum circuit breaker 2 is extended and arranged in the housing 1 along the width direction of the housing 1, the fuse 3 is extended and arranged below the vacuum circuit breaker 2 along the height direction of the housing 1, further preferably, the housing 1 includes an upper housing and a lower housing, three disconnecting switches 10 and three vacuum circuit breakers 2 are respectively arranged in the upper housing, three grounding switches 11 and three lower wiring devices 2 are respectively arranged in the lower housing, and the fuse 3 is connected between the vacuum circuit breaker 2 and the lower wiring devices 2. The structural design is beneficial to reducing the height and the volume of the whole product by reasonably optimizing the position structure of the vacuum circuit breaker 2, so that the product structure is more compact.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (9)

1. The utility model provides a take combination switch electrical apparatus of protection function of fusing, includes vacuum circuit breaker (2) and fuse (3) that set up in shell frame (1) to and operating means (4) of setting in shell frame (1) one side, operating means (4) include mechanism board (41) and are used for triggering the brake mechanism that breaks out of vacuum circuit breaker brake action, brake mechanism is including rotating brake semi-axis structure (5) that set up in mechanism board (41), be provided with transmission structure between fuse (3) and the brake mechanism, its characterized in that: the transmission structure comprises:

A drive shaft (6) rotatably provided to the housing (1) and extending to one side of the mechanism plate (41);

The fuse top plate (7) is fixedly connected to the driving shaft (6) and is positioned on the upper side of the ejector pin of the fuse (3);

The fuse swing arm (8) is rotatably arranged between the brake-separating half shaft structure (5) and the driving shaft (6), and the driving shaft (6) is connected with the fuse swing arm (8) through a connecting structure; the fuse top plate (7) drives the driving shaft (6) to rotate when being impacted by the ejector pin, so that the fuse swing arm (8) triggers the brake-separating half shaft structure (5) to release and rotate under the driving of the driving shaft (6).

2. The combined switching device with a fuse protection function according to claim 1, wherein: the connecting structure comprises a connecting plate (9) which is arranged on the driving shaft (6) in a linkage way, and the connecting plate (9) is movably connected with the fuse swing arm (8).

3. The combined switching device with a fuse protection function according to claim 2, wherein: the fuse swing arm (8) rotate through the locating shaft set up in mechanism board (41), the one end of fuse swing arm (8) is equipped with bar hole (81), pass bar hole through connecting piece (82) with link to each other in link plate (9), and follow bar hole (81) slidable under the promotion of link plate (9).

4. The combined switching device with a fuse protection function according to claim 3, wherein: the driving shaft (6) comprises square shaft parts (61) which are rotatably arranged on side plates on two sides of the shell frame (1), and round shaft parts (62) which are connected to one ends of the square shaft parts (61) and extend out of the shell frame (1) along the axial direction of the driving shaft (6), and one ends of the connecting plates (9) are fixed on the round shaft parts (62).

5. The combined switch electric appliance with the fusing protection function according to claim 4, wherein: the other end of the connecting plate (9) is provided with a screw hole structure corresponding to the strip-shaped hole (81), and the connecting piece (82) is a screw structure which is fixed in the screw hole structure after passing through the strip-shaped hole (81).

6. The combined switch electric appliance with the fusing protection function according to claim 5, wherein: the brake-separating half shaft structure (5) comprises a half shaft body of a rotatable extending mechanism plate (41) and a deflector rod (51) fixedly connected to the half shaft body, the deflector rod (51) is located on a movement path of the fuse swing arm (8), and the deflector rod (51) drives the half shaft body to rotate under the pushing action of the fuse swing arm (8).

7. The combined switching device with a fuse protection function according to claim 6, wherein: one end of the fuse top plate (7) is fixedly connected to the Fang Zhoubu (61) through a fastener, the other end of the fuse top plate extends to be positioned at the top of the fuse (3) and is opposite to the thimble, and three fuse top plates (7) are arranged on the square shaft part (61) at intervals.

8. The combined switching device with a fuse protection function according to any one of claims 1 to 7, wherein: be provided with isolator (10), vacuum circuit breaker (2) and earthing switch (11) from last to distributing down in shell frame (1), vacuum circuit breaker (2) along the width direction extension of shell frame set up in shell frame (1), fuse (3) along the direction of height extension of shell frame set up in vacuum circuit breaker (2) below.

9. The combined switching device with a fuse protection function according to claim 8, wherein: the shell frame (1) comprises an upper shell and a lower shell, wherein three disconnecting switches (10) and three vacuum circuit breakers (2) are respectively arranged in the upper shell, three grounding switches (11) and three lower wiring devices (12) are respectively arranged in the lower shell, and the fuse (3) is connected between the vacuum circuit breakers (2) and the lower wiring devices (12).