Energy storage type disconnecting switch

Abstract

The utility model relates to an energy storage type disconnecting switch, which comprises a shell, a contact system and an energy storage operating mechanism, the energy storage operating mechanism comprises a mechanism frame, a rotating shaft rotationally arranged on the mechanism frame, an operating shaft for driving the rotating shaft to execute opening and closing actions, two energy storage torsion springs arranged between the operating shaft and the shell, a driving piece arranged on the rotating shaft in a linkage manner, and two energy storage spring groups arranged between the driving piece and the mechanism frame; the driving disc is in linkage fit with the driving piece, the driving plate assembly is in linkage fit with the driving disc and used for driving the contact system to execute opening and closing actions, the driving piece is provided with two poking rods used for poking the driving disc to rotate, and the driving disc is provided with two poking holes matched with the two poking rods. And one ends of the two driving levers are respectively inserted into the two driving holes, so that the driving disc is in linkage fit with the two driving levers. The utility model has the advantages of stable and reliable performance, fast opening and closing speed, modularization and high breaking capacity.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to an energy storage type isolating switch. Background Art

[0002] Isolating switches are devices that isolate power-off parts from live parts and create an obvious disconnection point to isolate faulty equipment or perform power outage maintenance. When electrical equipment is shut down for maintenance, the equipment to be repaired is isolated from the power supply to form an obvious disconnection point to avoid safety accidents. Isolating switches are widely used in power distribution systems and automation systems in construction, electricity, petrochemicals and other industries.

[0003] The isolating switch includes a housing, an operating mechanism, and a contact system. For example, the Chinese patent application number CN202210451114.2 discloses a new type of load isolating switch structure, the operating mechanism of which adopts a single spring energy storage structure design, the energy storage and instantaneous energy release of the single spring energy storage structure is small, and the instantaneous connection or disconnection of the contact system cannot be achieved, the opening and closing speed is slow, and the breaking capacity is weak; and the contact system of the load isolating switch structure adopts a slider structure design, the slider moves back and forth between the closing position and the opening position in the housing, and the movement resistance of the slider is large, thereby affecting the opening or closing speed of the contact system. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide an energy storage isolating switch with stable and reliable performance, fast opening and closing speed, modularization and high breaking capacity.

[0005] To achieve the above-mentioned purpose, the utility model adopts an energy storage type isolating switch, including a shell, a contact system, and an energy storage operating mechanism for driving the contact system to perform opening and closing operations. The energy storage operating mechanism includes a mechanism frame, a rotating shaft rotatably arranged on the mechanism frame, an operating shaft for driving the rotating shaft to perform opening and closing operations, two energy storage torsion springs arranged between the operating shaft and the shell, a driving member linked to the rotating shaft, two groups of energy storage spring groups arranged between the driving member and the mechanism frame, a driving disk linked to the driving member, and a driving plate assembly linked to the driving disk and used to drive the contact system to perform opening and closing operations. The driving member is provided with two levers for driving the driving disk to rotate, and the driving disk is provided with two dial holes matched with the two dial levers. One ends of the two dial levers are respectively inserted into the two dial holes to form a linkage cooperation between the driving disk and the two dial levers.

[0006] The beneficial effects of the above structure are: the energy storage operating mechanism adopts a double energy storage spring structure design, and the energy storage and instantaneous energy release of the energy storage operating mechanism is greater, which can realize the instantaneous connection or disconnection of the contact system, the opening and closing speed is slower, and the breaking capacity is stronger. In addition, the two energy storage torsion springs can accelerate the operation shaft to perform the opening and closing action, which is convenient for the operator to operate and the opening and closing speed is faster. The two groups of spring energy storage groups can accelerate the action of the driving member, and the driving member accelerates the action by toggling the driving plate assembly through two levers. The driving plate assembly can accelerate the contact system to perform the opening and closing action. The energy storage operating mechanism adopts a modular structure design, which is conducive to the modular assembly of the disconnecting switch. Therefore, the disconnecting switch has the advantages of stable and reliable performance, fast opening and closing speed, modularization, and high breaking capacity.

[0007] In particular, one end of the operating shaft has a positioning groove on the set rotating shaft, and two driving arms are symmetrically distributed on both sides of the corresponding positioning groove on the operating shaft, the two energy storage torsion springs are connected between the two driving arms and the housing, the two driving arms are respectively provided with two driving rods, and the rotating shaft is linked with a transmission disk, and the transmission disk is provided with two dial grooves matched with the two driving rods, and the two driving rods are inserted in the two dial grooves, and form a linkage match between the transmission disk and the two driving rods. The operating shaft cooperates with the two dial grooves of the transmission disk through the dial rods on the two driving arms. During operation, the operating shaft compresses the two energy storage torsion springs. When the two energy storage torsion springs pass the dead point, the two energy storage torsion springs release energy, and the two energy storage torsion springs drive the transmission disk to rotate rapidly, thereby realizing the unrelated human operation of the operating shaft, facilitating the operation of the operator, and helping to speed up the opening and closing speed of the disconnector.

[0008] In particular, the energy storage spring group includes a guide shaft linked to the lever, a positioning shaft on the positioning pin of the mechanism frame, and an energy storage spring sleeved on the guide shaft. One end of the positioning shaft has a guide groove, and one end of the guide shaft is inserted into the guide groove. The two ends of the energy storage spring respectively contact the guide shaft and the positioning shaft. The energy storage spring group adopts a modular structure design, which facilitates the assembly of the energy storage spring group, the lever, and the mechanism frame, and the assembly efficiency is higher. The double energy storage spring structure design is adopted, and the lever compresses the energy storage spring through the guide shaft, thereby realizing the energy storage and release of the energy storage spring group. The lever can accelerate the execution of the opening and closing action, so that the opening and closing speed of the disconnector is faster and the breaking capacity is stronger.

[0009] In particular, the mechanism frame includes two support plates and a positioning pin arranged between the two support plates. The two support plates are provided with guide holes corresponding to the shifting rods. The shifting rods are inserted into the guide holes, and the shifting rods move with the driving member and reciprocate in the guide holes.

[0010] In particular, the driving plate assembly includes two driving plates that are linked with the driving disc, at least one transmission plate that is linked with the two driving plates, and two positioning bosses that are matched with the two driving plates are arranged on both sides of the transmission plate. The two positioning bosses are engaged in the positioning holes of the two transmission plates, and form a linkage between the transmission plate and the two driving plates. The driving disc drives the contact system through the two driving plates and the transmission plate to perform the opening and closing actions. The two driving plates can drive multiple groups of moving contacts of the contact system through multiple transmission plates, and can ensure that the transmission of the transmission disc and the contact system is more reliable.

[0011] In particular, the contact system includes at least one group of moving contact groups that cooperate with the transmission plate, at least one group of stationary contact groups that cooperate with the moving contact groups, the moving contact group includes a contact frame that is rotatably arranged in the housing, a clamping plate arranged in the contact frame, two moving contact pieces arranged on the contact frame, and two contact springs arranged between the clamping plate and the two moving contact pieces, one end of the contact frame has a clamping protrusion, the middle part of the transmission plate is provided with a clamping hole that cooperates with the clamping protrusion, the clamping protrusion is clamped in the clamping hole, and constitutes the linkage cooperation between the contact frame and the transmission plate. The contact frame is clamped with the transmission plate through the clamping protrusion, which facilitates the assembly of the contact frame and the transmission plate, and thereby ensures that the transmission of the contact frame and the transmission plate is more reliable and stable, and the contact spring can increase the contact pressure between the moving contact piece and the stationary contact piece, which is conducive to improving the working reliability of the isolating switch.

[0012] In particular, the static contact group includes a static contact piece and a wiring terminal, one end of the static contact piece has a contact portion that matches with two moving contacts, and the other end of the static contact piece has a conductive portion that is engaged in the wiring terminal. The wiring terminal and the static contact piece adopt a modular structure design, which is conducive to the modular assembly of the disconnector and has higher assembly efficiency.

[0013] In particular, the housing includes a base, a middle cover arranged on the base, and an upper cover arranged on the middle cover. A first accommodation cavity for placing a contact system is formed between the base and the middle cover, and a second accommodation cavity for placing an energy storage operating mechanism is formed between the middle cover and the upper cover. The contact system and the energy storage operating mechanism are respectively arranged in the first accommodation cavity and the second accommodation cavity of the housing. The contact system and the energy storage operating mechanism are respectively arranged in independent cavities, which has higher working reliability and is conducive to the modular assembly of the disconnector.

[0014] In particular, the base is provided with insulating partitions separating each group of moving contacts and each group of stationary contacts. The insulating partitions separating each group of moving contacts and each group of stationary contacts have better insulation performance and are conducive to improving the working reliability of the disconnector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a stereogram of an embodiment of the utility model.

[0016] Figure 2 This is an exploded view of an embodiment of the utility model.

[0017] Figure 3 It is a three-dimensional diagram of the energy storage operating mechanism of the embodiment of the utility model.

[0018] Figure 4 It is an exploded view of the energy storage operating mechanism of the embodiment of the utility model.

[0019] Figure 5 It is a cross-sectional view of the energy storage operating mechanism of an embodiment of the utility model.

[0020] Figure 6 This is a front view of the moving contact group of the utility model embodiment. DETAILED DESCRIPTION

[0021] like Figures 1 to 6As shown, the embodiment of the utility model is an energy storage type disconnector, comprising a housing 10, a contact system 20, and an energy storage operating mechanism 30 for driving the contact system 20 to perform opening and closing. The energy storage operating mechanism 30 comprises a mechanism frame 31, a rotating shaft 32 rotatably arranged on the mechanism frame 31, an operating shaft 33 for driving the rotating shaft 32 to perform opening and closing actions, two energy storage torsion springs 330 arranged between the operating shaft 33 and the housing 10, a driving member 34 linked to the rotating shaft 32, and a driving member 34 arranged between the driving member 34 and the mechanism frame 31. The drive member 34 is provided with two sets of energy storage spring groups 35, a drive disk 36 that cooperates with the drive member 34, and a drive plate assembly 37 that cooperates with the drive disk 36 and is used to drive the contact system 20 to perform opening and closing actions. The drive member 34 is provided with two shifting rods 341 for shifting the drive disk 36 to rotate, and the drive disk 36 is provided with two shifting holes 361 that cooperate with the two shifting rods 341. One ends of the two shifting rods 341 are respectively inserted into the two shifting holes 361, and constitute the linkage cooperation between the drive disk 36 and the two shifting rods 341. One end of the operating shaft 33 has a positioning groove 331 on the mounted rotating shaft 32, and two driving arms 332 are symmetrically distributed on both sides of the corresponding positioning groove 331 on the operating shaft 33. The two energy storage torsion springs 34 are connected between the two driving arms 332 and the shell 10. Two driving rods 333 are respectively arranged on the two driving arms 332. A transmission disk 38 is linked to the rotating shaft 32. Two shifting grooves 381 cooperating with the two driving rods 333 are arranged on the transmission disk 38. The two driving rods 333 are inserted in the two shifting grooves 381, and constitute the linkage cooperation between the transmission disk 38 and the two driving rods 333. The operating shaft cooperates with the two toggle slots of the transmission disk through the toggle rods on the two driving arms. During operation, the operating shaft compresses the two energy storage torsion springs. When the two energy storage torsion springs pass the dead point, the two energy storage torsion springs release energy, and the two energy storage torsion springs drive the transmission disk to rotate rapidly, thereby realizing the independent human operation of the operating shaft, facilitating the operation of the operator, and helping to speed up the opening and closing speed of the disconnector. The energy storage spring group 35 includes a guide shaft 351 that is linked to the toggle rod 341, a positioning shaft 352 that is set on the positioning pin 310 of the mechanism frame 31, and an energy storage spring 353 that is sleeved on the guide shaft 351. One end of the positioning shaft 352 has a guide slot 3521, and one end of the guide shaft 351 is inserted into the guide slot 3521. The two ends of the energy storage spring 353 are respectively in contact with the guide shaft 351 and the positioning shaft 352. The energy storage spring group adopts a modular structure design, which facilitates the assembly of the energy storage spring group, the lever and the mechanism frame, and has higher assembly efficiency. It adopts a double energy storage spring structure design, and the lever compresses the energy storage spring through the guide shaft, thereby realizing the energy storage and release of the energy storage spring group. The lever can accelerate the opening and closing actions, so that the opening and closing speed of the disconnector is faster and the breaking capacity is stronger.The mechanism frame 31 includes two support plates 311, and a positioning pin 310 disposed between the two support plates 311. The two support plates 311 are provided with guide holes 3111 corresponding to the levers 341. The levers 341 are inserted into the guide holes 3111, and the levers 341 move with the driving member 34 and reciprocate in the guide holes 3111. The driving plate assembly 37 includes two driving plates 371 that are linked with the driving disk 36, and at least one transmission plate 372 that is linked with the two driving plates 371. Two positioning bosses 3721 that are linked with the two driving plates 371 are disposed on both sides of the transmission plate 372. The two positioning bosses 3721 are engaged in the positioning holes 3711 of the two transmission plates 371, and constitute the linkage between the transmission plate 372 and the two driving plates 371. The driving disc drives the contact system to perform opening and closing actions through two driving plates and a transmission plate. The two driving plates can drive multiple groups of moving contacts of the contact system through multiple transmission plates, and can ensure that the transmission between the driving disc and the contact system is more reliable.

[0022] like Figure 2 , 3 6, the contact system 20 includes at least one group of moving contact groups 21 that cooperate with the transmission plate 372, and at least one group of stationary contact groups 22 that cooperate with the moving contact group 21. The moving contact group 21 includes a contact frame 211 rotatably arranged in the housing 10, a clamping plate 212 arranged in the contact frame 211, two moving contact pieces 213 arranged on the contact frame 211, and two contact springs 214 arranged between the clamping plate 212 and the two moving contact pieces 213. One end of the contact frame 211 has a clamping protrusion 2111, and the middle part of the transmission plate 372 is provided with a clamping hole 3722 that cooperates with the clamping protrusion 2111. The clamping protrusion 2111 is clamped in the clamping hole 3722, and constitutes the linkage cooperation between the contact frame 211 and the transmission plate 372. The cross-sectional shape of the clamping protrusion is gear-shaped. The contact frame is clamped with the transmission plate through the clamping protrusion, which makes it easier to assemble the contact frame and the transmission plate, and thus ensures that the transmission of the contact frame and the transmission plate is more reliable and stable. The contact spring can increase the contact pressure between the moving contact piece and the static contact piece, which is beneficial to improving the working reliability of the disconnector. The static contact group 22 includes a static contact piece 221 and a wiring terminal 222. One end of the static contact piece 221 has a contact portion 2211 that matches with the two moving contacts 213, and the other end of the static contact piece 221 has a conductive portion 2212 that is clamped in the wiring terminal 222. The wiring terminal and the static contact piece adopt a modular structural design, which is beneficial to realize the modular assembly of the disconnector and has higher assembly efficiency.

[0023] like Figure 1 , 2As shown, the housing 10 includes a base 11, a middle cover 12 arranged on the base 11, and an upper cover 13 arranged on the middle cover 12. A first accommodating chamber 100 for placing the contact system 20 is formed between the base 11 and the middle cover 12, and a second accommodating chamber 101 for placing the energy storage operating mechanism 30 is formed between the middle cover 12 and the upper cover 13. The contact system and the energy storage operating mechanism are respectively arranged in the first accommodating chamber and the second accommodating chamber of the housing. The contact system and the energy storage operating mechanism are respectively arranged in independent chambers, which has higher working reliability and is conducive to the modular assembly of the disconnector. The base 11 is respectively provided with insulating partitions 111 separating each group of moving contact groups 21 and static contact groups 22. The insulating partitions are separated between each group of moving contact groups and static contact groups, and the insulation performance is better, which is conducive to improving the working reliability of the disconnector.

[0024] The energy storage operating mechanism adopts a double energy storage spring structure design. The energy storage operating mechanism has greater energy for energy storage and instantaneous energy release, which can realize instantaneous connection or disconnection of the contact system, slow opening and closing speed, and stronger breaking capacity. In addition, the two energy storage torsion springs can accelerate the operation shaft to perform opening and closing actions, which is convenient for the operator to operate and has a faster opening and closing speed. The two sets of spring energy storage groups can accelerate the action of the driving part. The driving part accelerates the action by toggling the driving plate assembly through two levers. The driving plate assembly can accelerate the contact system to perform opening and closing actions. The energy storage operating mechanism adopts a modular structure design, which is conducive to the modular assembly of the disconnector. Therefore, the disconnector has the advantages of stable and reliable performance, fast opening and closing speed, modularization, and high breaking capacity.

Claims

1. An energy storage isolating switch, comprising a housing, a contact system, and an energy storage operating mechanism for driving the contact system to perform opening and closing, characterized in that: The energy storage operating mechanism includes a mechanism frame, a rotating shaft rotatably arranged on the mechanism frame, an operating shaft for driving the rotating shaft to perform opening and closing actions, two energy storage torsion springs arranged between the operating shaft and the housing, a driving member linked to the rotating shaft, two groups of energy storage spring groups arranged between the driving member and the mechanism frame, a driving disk linked to the driving member, and a driving plate assembly linked to the driving disk and used to drive the contact system to perform opening and closing actions. The driving member is provided with two levers for driving the driving disk to rotate, and the driving disk is provided with two dial holes matched with the two dial levers. One ends of the two dial levers are respectively inserted into the two dial holes, and constitute a linkage match between the driving disk and the two dial levers.

2. The energy storage isolating switch according to claim 1, characterized in that: One end of the operating shaft is provided with a positioning groove on the mounted rotating shaft, and two driving arms are symmetrically distributed on both sides of the operating shaft corresponding to the positioning groove, the two energy storage torsion springs are connected between the two driving arms and the shell, and two driving arms are respectively provided with two driving rods, and a transmission disk is linked to the rotating shaft, and two dial grooves cooperating with the two driving rods are provided on the transmission disk, and the two driving rods are inserted in the two dial grooves to form a linkage cooperation between the transmission disk and the two driving rods.

3. The energy storage isolating switch according to claim 1 or 2, characterized in that: The energy storage spring group includes a guide shaft linked to the lever, a positioning shaft arranged on the positioning pin of the mechanism frame, and an energy storage spring sleeved on the guide shaft. One end of the positioning shaft has a guide groove, one end of the guide shaft is inserted into the guide groove, and the two ends of the energy storage spring respectively abut against the guide shaft and the positioning shaft.

4. The energy storage isolating switch according to claim 1 or 2, characterized in that: The mechanism frame includes two support plates and a positioning pin arranged between the two support plates. The two support plates are provided with guide holes at positions corresponding to the shifting rods. The shifting rods are inserted into the guide holes, and the shifting rods move with the driving member and reciprocate in the guide holes.

5. The energy storage isolating switch according to claim 1 or 2, characterized in that: The drive plate assembly includes two drive plates that cooperate with the drive disk and at least one transmission plate that cooperates with the two drive plates. Two positioning bosses that cooperate with the two drive plates are arranged on both sides of the transmission plate. The two positioning bosses are engaged in the positioning holes of the two transmission plates and constitute the linkage cooperation between the transmission plate and the two drive plates.

6. The energy storage isolating switch according to claim 5, characterized in that: The contact system includes at least one group of moving contact groups that cooperate with the transmission plate, and at least one group of static contact groups that cooperate with the moving contact group. The moving contact group includes a contact frame rotatably arranged in the shell, a clamping plate arranged in the contact frame, two moving contact pieces arranged on the contact frame, and two contact springs arranged between the clamping plate and the two moving contact pieces. One end of the contact frame has a clamping protrusion, and the middle part of the transmission plate is provided with a clamping hole that cooperates with the clamping protrusion. The clamping protrusion is clamped in the clamping hole and constitutes the linkage cooperation between the contact frame and the transmission plate.

7. The energy storage isolating switch according to claim 6, characterized in that: The stationary contact group comprises a stationary contact piece and a wiring terminal. One end of the stationary contact piece has a contact portion matched with two moving contact pieces, and the other end of the stationary contact piece has a conductive portion engaged in the wiring terminal.

8. The energy storage isolating switch according to claim 6, characterized in that: The shell includes a base, a middle cover arranged on the base, and an upper cover arranged on the middle cover. A first accommodating cavity for accommodating the contact system is formed between the base and the middle cover, and a second accommodating cavity for accommodating the energy storage operating mechanism is formed between the middle cover and the upper cover.

9. The energy storage isolating switch according to claim 8, characterized in that: Insulating partitions are arranged in the base to separate each group of moving contacts and each group of stationary contacts.

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