CN210110626U - Operating mechanism for isolating load switch - Google Patents
Operating mechanism for isolating load switch Download PDFInfo
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- CN210110626U CN210110626U CN201920995797.1U CN201920995797U CN210110626U CN 210110626 U CN210110626 U CN 210110626U CN 201920995797 U CN201920995797 U CN 201920995797U CN 210110626 U CN210110626 U CN 210110626U
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Abstract
The utility model relates to an operating mechanism for isolation load switch, the on-line screen storage device comprises a base, the insulator group, the moving contact is female to be arranged, move and touch and indicate, the static contact is female to be arranged, the static contact, the explosion chamber, operating mechanism includes an operation pole, the operation pole indicates articulated to form through insulating pull rod and moving contact, a rotor plate is installed to the mid position at the operation pole, it has a transfer link to articulate on the rotor plate, the both sides that are located the rotor plate at the operation pole still are provided with the supplementary action board that a slope upwards extends, it has an auxiliary action pole to articulate on the supplementary action board, still install one on the vertical pole at the female insulator place of arranging of moving contact and assist action pole matched with fixed plate, have on the fixed plate and hold the through-hole that auxiliary action pole passed, it is. The utility model has the advantages that: the elastic action of a pair of extension springs is utilized to improve the rotating speed of the operating rod, so that the operating rod can rotate quickly, and the closing and opening speeds of products are improved.
Description
Technical Field
The utility model relates to an isolator, in particular to operating mechanism for isolation load switch.
Background
The load isolating switch is a device which isolates a power failure part from a power supply part and causes an obvious disconnection point so as to isolate fault equipment or perform power failure maintenance. The load isolating switch is widely applied to power distribution systems and automation systems in the industries of buildings, electric power, petrochemical industry and the like. The modularized design structure has flexible and diversified combinability, and the shell is made of glass fiber reinforced unsaturated polyester resin, so that the modularized design structure has high dielectric property, protective capability and reliable operation safety. The operating mechanism is an accelerating mechanism with spring energy storage and instantaneous release, and is a double-break contact structure which is instantaneously connected and disconnected. The speed of the operating handle is irrelevant, and various electrical properties and mechanical properties are greatly improved. The multifunctional cabinet has multiple structures and operation modes, a window for directly observing the on-off state of a contact, operations inside and outside the cabinet, operations on the front side and the side surface, and wiring after a board is arranged. The load isolating switch has the advantages of attractive appearance, novelty, conciseness and small volume, and is an ideal choice for similar products.
The load switch is formed by combining a fuse and an isolating switch, the isolating switch cuts off normal operation current, and the fuse cuts off loop fault current, so the load switch has a certain protection effect on the motor. However, contactors should be added after the load switch to serve as operating elements and overload and overcurrent protection elements of the motor circuit. The circuit should not be operated with load switches only, since load switches are not components that allow frequent operation and the protection of the motor is not complete.
For example, patent CN105762000A discloses a dc load isolating switch, which includes an isolating switch and a load switch, where the isolating switch includes a moving contact busbar and a crankshaft link mechanism, the crankshaft link mechanism is connected with an insulating operating rod, the moving contact busbar is provided with an isolating knife, an end of the insulating operating rod is connected with the isolating knife, the isolating knife is provided with a conductive wheel, the load switch includes a fixed contact busbar, a fast operating mechanism and an arc extinguish chamber, the fixed contact busbar is provided with a fixed contact, and the fast operating mechanism is provided with a U-shaped conductive fork corresponding to the conductive wheel; the combined structure of the load switch and the isolating switch is adopted, the isolating switch part adopts an upper and lower knife switch type structure, not only can the normal load current of a circuit be switched on and off, but also the functions of the isolating switch can be integrated, and the isolating switch has the characteristics of compact structure, strong breaking capacity, convenience in installation and maintenance and the like.
In the process of opening and closing the isolation switch, the isolation switch in the structure utilizes the crankshaft connecting rod mechanism to drive the isolation knife to move up and down to realize opening and closing. In the process of this action, for the crankshaft connecting rod mechanism, it needs to use a horizontally arranged connecting rod and a vertically arranged connecting rod, i.e. it involves movements in two different directions, i.e. horizontal direction and vertical direction, the transmission is not very stable, and the closing and opening speed of the product is completely determined by the crankshaft connecting rod mechanism, and the crankshaft connecting rod mechanism uses a mechanism formed by hinging a plurality of connecting rods, so the transmission speed is not very fast, i.e. the closing and opening speed of the product is not very fast.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an operating mechanism for isolation load switch of speed that guarantees that product closes and opens and shuts.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides an operating mechanism for isolation load switch which innovation point lies in: comprises that
The base is of a cuboid frame type structure which is formed by a pair of longitudinal rods and four transverse rods;
the insulator groups are arranged on the longitudinal rods, each insulator group consists of a pair of insulators which are respectively arranged on the two longitudinal rods, a moving contact busbar is arranged at the top end of one insulator, a moving contact finger is hinged to the moving contact busbar, a static contact busbar is arranged at the top end of the other insulator, a static contact is arranged at the top end of the static contact busbar, and an arc extinguish chamber is arranged beside the static contact busbar;
the operating mechanism is arranged on the cross bars and drives all the movable contact fingers to move up and down and realize the opening and closing of the movable contact fingers and the static contact, the operating mechanism comprises an operating rod, two sides of the operating rod are hinged with the two cross bars positioned on the outermost side, the upper end of the operating rod is hinged with the movable contact fingers through an insulating pull rod, a rotating sheet is arranged in the middle of the operating rod, a transmission rod is hinged on the rotating sheet, a second operating rod is movably connected with the side ends of the two cross bars positioned on the inner side and is hinged with the transmission rod, the second operating rod is driven by an electric mechanism to rotate, an auxiliary action plate extending upwards in an inclined mode is arranged on the two sides of the operating rod positioned on the rotating sheet, an auxiliary action rod is hinged on the auxiliary action plate, a fixing plate matched with the auxiliary action rod is arranged on a longitudinal rod where an insulator provided with the movable contact is positioned, the fixed plate is provided with a through hole for the auxiliary action rod to pass through, the auxiliary action rod is further sleeved with a telescopic spring, the upper side of the telescopic spring is abutted against the auxiliary action plate, and the lower part of the telescopic spring is abutted against the side end of the fixed plate.
Furthermore, an arc-shaped groove for avoiding the operation rod is arranged between the two cross rods positioned on the inner side.
Furthermore, an arc-shaped waist-shaped hole is further formed in the rotating sheet, and a hinge point of the transmission rod and the rotating sheet is located in the waist-shaped hole.
The utility model has the advantages that: the utility model discloses in, through add supplementary action board, supplementary action pole and expanding spring on the action pole, utilize a pair of expanding spring's elastic action, improve the rotation rate of action pole to realize the quick rotation of action pole, improve the speed that closes and cut-off of closing of product.
The arc-shaped waist-shaped hole is designed so that the speed of the product is not influenced by an external mechanism when the expansion spring releases energy.
The arc-shaped groove is formed in the cross rod, so that the operation rod can be well avoided, the operation rod is prevented from being in contact with the cross rod in the rotating process, relative friction is generated, and smooth operation of opening and closing of a product is influenced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a top view of the operating mechanism for isolation load switch of the present invention.
Fig. 2 is a bottom view of the operating mechanism for isolation load switch of the present invention.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the scope of the present invention.
An operating mechanism for an isolation load switch as shown in fig. 1 and 2 comprises
A base 1, base 1 is by a pair of vertical pole 11 and the common cuboid frame structure who constitutes of four horizontal poles 12, wherein lie in two horizontal poles 12 of the outside and vertical pole 11's the outside looks fixed connection, lie in two horizontal poles 12 of inboard and be connected fixedly with vertical pole 11's bottom, in this embodiment, vertical pole 11 all adopts the channel-section steel structure of U shape with horizontal pole 12 to make whole base 1's structure more stable.
And multiple groups of insulator groups are arranged on the longitudinal rods 11, and each group of insulator groups is composed of a pair of insulators 13 which are respectively arranged on the two longitudinal rods 11.
A moving contact busbar 14 is mounted at the top end of one of the insulators 13, a moving contact finger 15 is hinged on the moving contact busbar 14, and a conductive wheel 17 is movably mounted on one side of the moving contact finger 15 far away from the moving contact busbar.
A static contact busbar 18 is arranged at the top end of the other insulator 13, a static contact 19 is arranged at the top end of the static contact busbar 18, an arc extinguish chamber 20 is arranged beside the static contact busbar 18, a conductive shifting fork 22 is connected to the upper side end of the arc extinguish chamber 20, and the conductive shifting fork 22 is in a U-shaped rod-shaped structure and is matched with the conductive wheel 17 to drive the main transmission shaft 21 to move up and down.
And the operating mechanism is arranged on the cross bar 12 and drives all the movable contact fingers 15 to move up and down and realizes the opening and closing of the movable contact fingers 15 and the static contact 19.
The operating mechanism comprises an operating rod 3, two sides of the operating rod 3 are hinged with two cross rods 12 positioned on the outermost side, and an arc-shaped groove 31 avoiding the operating rod is formed between the two cross rods 12 positioned on the inner side. The arc-shaped groove 31 is formed in the cross rod 12, so that the operation rod 3 can be well avoided, and the phenomenon that the operation rod 3 is contacted with the cross rod 12 in the rotating process to generate relative friction to influence the smooth operation of opening and closing of a product is avoided.
The upper end of the operating rod 3 is hinged with the movable contact finger 15 through the insulating pull rod 32, a rotating sheet 41 is installed in the middle of the operating rod 3, a transmission rod 42 is hinged on the rotating sheet 41, a second operating rod 43 is movably connected to the side ends of the two transverse rods 12 positioned on the inner side, the second operating rod 43 is hinged with the transmission rod 42, and the second operating rod 43 is driven by an electric mechanism to rotate.
An auxiliary action plate 44 extending obliquely upwards is further arranged on two sides of the operating rod 3, which are positioned on the rotating sheet 41, an auxiliary action rod 45 is hinged on the auxiliary action plate 44, a fixing plate 47 matched with the auxiliary action rod 45 is further arranged on the vertical rod 11 on which the insulator 13 provided with the movable contact busbar 14 is positioned, a through hole for the auxiliary action rod 45 to pass through is formed in the fixing plate 47, an expansion spring 46 is further sleeved on the auxiliary action rod 45, the upper side of the expansion spring 46 abuts against the auxiliary action plate 44, and the lower part of the expansion spring 46 abuts against the side end of the fixing plate 47. The rotation speed of the operation rod 3 is increased by the elastic action of the pair of extension springs 46, so that the operation rod 3 can rotate quickly, and the closing and opening speeds of products are increased.
An arc-shaped waist-shaped hole 48 is further formed in the rotating piece 41, and a hinge point of the transmission rod 42 and the rotating piece 41 is located in the waist-shaped hole 48. The arcuate slot 48 is designed so that the speed of the product is not affected by external mechanisms when the extension spring 46 is energized.
The working principle is as follows: in the process of closing, the second operating rod 43 is driven by the electric mechanism to rotate clockwise, the rotation of the second operating rod 43 pushes the transmission rod 42 to move towards the center direction between the two vertical rods 11, the transmission rod 42 pulls the rotating piece 41 to swing downwards, and further drives the operating rod 3 to rotate clockwise, the rotation of the operating rod 3 pulls the movable contact finger 15 to move downwards through the insulating pull rod 32, meanwhile, the auxiliary action plate 44 also swings downwards along with the rotation of the operating rod 3, the telescopic spring 46 contracts, and when the hinge point between the auxiliary action plate 44 and the auxiliary action rod 45 passes through a dead point, the telescopic spring 46 can pop outwards to accelerate the rotation of the operating rod 3 and improve the downward action speed of the movable contact finger 15, otherwise, the same distance is utilized to improve the speed of opening when opening.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An operating mechanism for an isolation load switch is characterized in that: comprises that
The base is of a cuboid frame type structure which is formed by a pair of longitudinal rods and four transverse rods;
the insulator groups are arranged on the longitudinal rods, each insulator group consists of a pair of insulators which are respectively arranged on the two longitudinal rods, a moving contact busbar is arranged at the top end of one insulator, a moving contact finger is hinged to the moving contact busbar, a static contact busbar is arranged at the top end of the other insulator, a static contact is arranged at the top end of the static contact busbar, and an arc extinguish chamber is arranged beside the static contact busbar;
the operating mechanism is arranged on the cross bars and drives all the movable contact fingers to move up and down and realize the opening and closing of the movable contact fingers and the static contact, the operating mechanism comprises an operating rod, two sides of the operating rod are hinged with the two cross bars positioned on the outermost side, the upper end of the operating rod is hinged with the movable contact fingers through an insulating pull rod, a rotating sheet is arranged in the middle of the operating rod, a transmission rod is hinged on the rotating sheet, a second operating rod is movably connected with the side ends of the two cross bars positioned on the inner side and is hinged with the transmission rod, the second operating rod is driven by an electric mechanism to rotate, an auxiliary action plate extending upwards in an inclined mode is arranged on the two sides of the operating rod positioned on the rotating sheet, an auxiliary action rod is hinged on the auxiliary action plate, a fixing plate matched with the auxiliary action rod is arranged on a longitudinal rod where an insulator provided with the movable contact is positioned, the fixed plate is provided with a through hole for the auxiliary action rod to pass through, the auxiliary action rod is further sleeved with a telescopic spring, the upper side of the telescopic spring is abutted against the auxiliary action plate, and the lower part of the telescopic spring is abutted against the side end of the fixed plate.
2. The operating mechanism for an isolation load switch of claim 1, wherein: an arc groove for avoiding the operation rod is arranged between the two cross rods positioned at the inner side.
3. The operating mechanism for an isolation load switch of claim 1, wherein: the rotating sheet is also provided with an arc-shaped waist-shaped hole, and the hinge point of the transmission rod and the rotating sheet is positioned in the waist-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995797.1U CN210110626U (en) | 2019-06-28 | 2019-06-28 | Operating mechanism for isolating load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920995797.1U CN210110626U (en) | 2019-06-28 | 2019-06-28 | Operating mechanism for isolating load switch |
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| Publication Number | Publication Date |
|---|---|
| CN210110626U true CN210110626U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920995797.1U Active CN210110626U (en) | 2019-06-28 | 2019-06-28 | Operating mechanism for isolating load switch |
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| CN (1) | CN210110626U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885636A (en) * | 2021-01-12 | 2021-06-01 | 浙江越岭电气有限公司 | High-voltage isolating switch for indoor use |
| CN113299515A (en) * | 2021-05-13 | 2021-08-24 | 武汉长海电气科技开发有限公司 | High-voltage high-current commutation switch |
| CN114141569A (en) * | 2021-10-27 | 2022-03-04 | 宁波天安智能电网科技股份有限公司 | Integrated isolating switch with operating mechanism |
-
2019
- 2019-06-28 CN CN201920995797.1U patent/CN210110626U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112885636A (en) * | 2021-01-12 | 2021-06-01 | 浙江越岭电气有限公司 | High-voltage isolating switch for indoor use |
| CN113299515A (en) * | 2021-05-13 | 2021-08-24 | 武汉长海电气科技开发有限公司 | High-voltage high-current commutation switch |
| CN114141569A (en) * | 2021-10-27 | 2022-03-04 | 宁波天安智能电网科技股份有限公司 | Integrated isolating switch with operating mechanism |
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