CN205159189U - A kind of switch steady type isolating switch - Google Patents

Abstract

The utility model discloses a steady type isolator of switch, connect slide rail (5) on its base (1), swing joint slider (6) are gone up in slide rail (5), right L shape fixed plate (8) is connected in slider (6), right insulator (14) are connected to right side L shape fixed plate (8), the right side insulator (14) are connected with moving contact (7) that link to each other with semi -circular plush copper (13), cooperate semicircular groove (12) on static contact (11) of semi -circular plush copper (13) and left side side, left insulator (10) are connected in static contact (11), and left insulator (10) are connected and are fixed on base (1) and establish at the left left L of slide rail (5) shape fixed plate (9), and left L shape fixed plate (9) is articulated establishes buckle (2) of just connecting stay cord (4) in static contact (11) below, and buckle (2) are connected through spring (3) with static contact (11), and the upper right end of buckle (2) is chamfer (15), the utility model discloses the operation is steady, and the contact is good, reduces the resistance of isolator contact, can improve the transmission efficiency of electric current, can not the corrosion, but protective apparatus.

Description

A kind of switch steady type isolating switch

Technical field:

The utility model relates to an isolating switch, in particular to an isolating switch with stable switching.

Background technique

When the isolating switch is in the off position, there is an insulation distance between the contacts that meets the specified requirements and an obvious disconnection mark; current switching devices. Isolating switch (commonly known as "knife switch") generally refers to a high-voltage isolating switch, that is, an isolating switch with a rated voltage of 1kV and above, usually referred to as an isolating switch. The working principle and structure are relatively simple, but due to the large amount of use and high reliability requirements, it has a greater impact on the design, establishment and safe operation of substations and power plants. The main feature of the isolating switch is that it has no arc extinguishing ability, and can only open and close the circuit under the condition of no load current. The isolating switch is used at all levels of voltage to change the circuit connection or to isolate the line or equipment from the power supply. It has no current interruption capability and can only be operated after disconnecting the line with other equipment. Generally, there is an interlock device to prevent misoperation of the switch under load, and sometimes a pin is required to prevent the switch from being disconnected under the magnetic force of a large fault.

The existing isolating switch is not stable during switching operation, which leads to the problem of poor contact of the isolating switch during use, which makes the contact resistance of the isolating switch large, which not only reduces the transmission efficiency of the current, but also causes the isolating switch to be disconnected. Corrosion occurs, which will damage the equipment in serious cases. Therefore, it is urgent to develop a stable switch operation that will not cause the disconnector to be prone to poor contact during use, so that the contact resistance of the disconnector is reduced, which can improve The transmission efficiency of the current is high, and it will not cause corrosion of the isolating switch, which can protect the switching of the equipment and the stable isolating switch.

Utility model content:

The purpose of this utility model is to overcome the deficiencies of the above-mentioned prior art and provide a switch operation that is stable, does not cause the problem of poor contact in the use of the disconnector, and reduces the contact resistance of the disconnector. It can improve the transmission efficiency of the current, and will not cause corrosion of the isolating switch, and can protect the switching stable type of the isolating switch of the equipment.

The purpose of this utility model can be achieved through the following measures: a switch stable type isolating switch, which is characterized in that it includes a base, a buckle plate, a spring, a pull cord, a slide rail, a slider, a moving contact, and a right L-shaped fixed plate , left L-shaped fixed plate, left insulator, static contact, semicircular protruding head and right insulator; the base is connected with a slide rail, the slide rail is movably connected with a slider, the slider is connected with a right L-shaped fixed plate, and the right L The left side of the shaped fixed plate is connected with the right insulator, the left side of the right insulator is connected with a moving contact, and the left side of the moving contact is connected with a semicircular protruding head; the left side of the semicircular protruding head is correspondingly provided with a static contact , the static contact is provided with a semicircular groove, the semicircular groove matches the semicircular convex head; the left side of the static contact is connected to the left insulator, and the left side of the left insulator is connected to the left L-shaped fixed plate, the left The L-shaped fixed plate is fixed on the base, and the left L-shaped fixed plate is arranged on the left side of the slide rail; It is connected by a spring wrapped with insulating material on the outside, the upper right end of the gusset is chamfered, and the lower part of the gusset is connected with a drawstring.

In order to further realize the purpose of the utility model, the buckle plate and the stay cord are both made of insulating materials.

Compared with the prior art, the utility model can produce the following positive effects: the utility model includes a slider, a buckle plate, a spring, a pull cord, a slide rail, a slider, a moving contact, a right L-shaped fixed plate, and a left L-shaped fixed plate. plate, left insulator, static contact, semicircular protruding head and right insulator, etc., when it is necessary to close the isolating switch, it can drive the right L-shaped fixed plate to slide to the left, and the upper right end of the pinch plate is provided with a chamfer, upper left corner Without chamfering, the moving contact can be fastened tightly so that the semicircular protrusion and the semicircular groove are in close contact. When the switch needs to be disconnected, pull the pull cord downward to separate the moving contact from the static contact. return to the initial position under action. The utility model is stable in the switch operation, and will not cause the problem of poor contact of the isolating switch during use, reduces the contact resistance of the isolating switch, can improve the transmission efficiency of the current, and will not cause the isolating switch to appear Rust, protects equipment. Moreover, when both the gusset and the stay rope are made of insulating materials, the safety and reliability can be greatly improved.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

detailed description:

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

Embodiment: A switch stable type isolating switch, as shown in Figure 1, it includes a base 1, a buckle plate 2, a spring 3, a pull cord 4, a slide rail 5, a slider 6, a moving contact 7, and a right L-shaped Fixed plate 8, left L-shaped fixed plate 9, left insulator 10, static contact 11, semicircular protruding head 13 and right insulator 14; a slide rail 5 is provided above the base 1, and the base 1 is connected to the slide rail 5; A slide block 6 is arranged on the slide rail 5, and the slide block 6 and the slide rail 5 are movably connected; a right L-shaped fixed plate 8 is connected above the slide block 6, and a right insulator 14 is arranged on the left side of the right L-shaped fixed plate 8 , the right L-shaped fixed plate 8 is connected with the right insulator 14; the left side of the right insulator 14 is connected with a movable contact 7, and the left side of the movable contact 7 is connected with a semicircular protruding head 13; The left side of the corresponding fixed contact 11 is provided with a semicircular groove 12 on the static contact 11, and the semicircular groove 12 is matched with the semicircular protrusion 13; on the left side of the static contact 11 There is a left insulator 10, the static contact 11 is connected with the left insulator 10; the left side of the left insulator 10 is connected with a left L-shaped fixed plate 9, and the left L-shaped fixed plate 9 is fixedly arranged on the base 1, and the left L-shaped fixed plate 9 is arranged on the left side of the slide rail 5; the right side of the left L-shaped fixed plate 9 is provided with a pinch plate 2, and the left L-shaped fixed plate 9 and the pinch plate 2 are hingedly connected; the pinch plate 2 is arranged on the fixed contact 11 Below, the pinch plate 2 is connected with the static contact 11 through the spring 3, and the outside of the spring 3 is wrapped with insulating material; 2 is connected with stay cord 4. Both the buckle plate 2 and the stay cord 4 are made of insulating material.

Working principle: When the isolating switch needs to be closed, push the slider 6 to the left, and drive the right L-shaped fixed plate 8 to slide to the left. First, the moving contact 7 touches the chamfer of the upper right end of the buckle plate 2, and squeezes the buckle downward. Board 2, thereby continuing to slide to the left. Because there is no chamfer at the left upper end on the right side plate of pinch plate 2, moving contact 7 can be fastened tightly, and semicircular protruding head 13 is closely contacted with semicircular groove 12. When the switch needs to be disconnected, pull the stay cord 4 downwards, thereby counteracting the effect of the spring 3 above the pinch plate 2, and move downwards, and then separate the movable contact 7 from the static contact 11, and the movable contact 7 is in the Move to the original position to the right under the effect of slide block 6, unclamp stay cord 4 again, and pinch plate 2 returns to initial position under the elastic force effect of spring 3. When both the buckle plate 2 and the stay cord 4 are made of insulating materials, the safety and reliability can be greatly improved.

The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the utility model. It should be pointed out that those skilled in the art can make several modifications, improvements and substitutions without departing from the concept of the present invention, all of which belong to the protection scope of the present utility model. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (2)

1. a switch leveling style isolating switch, is characterized in that it comprises base (1), buckle (2), spring (3), stay cord (4), slide rail (5), slide block (6), moving contact (7), right L shape fixed head (8), left L shape fixed head (9), left insulator (10), fixed contact (11), semi-circular projection (13) and right insulator (14); The upper connecting sliding rail (5) of base (1), slide rail (5) is flexibly connected slide block (6), slide block (6) is connected with right L shape fixed head (8), the left side of right L shape fixed head (8) connects right insulator (14), the left side of right insulator (14) is connected with moving contact (7), and the left side of moving contact (7) is connected with semi-circular projection (13); Left side side's correspondence of semi-circular projection (13) is provided with fixed contact (11), and fixed contact (11) is provided with semi-circular recesses (12), and semi-circular recesses (12) matches with semi-circular projection (13); The left side of fixed contact (11) connects left insulator (10), and the left side of left insulator (10) connects left L shape fixed head (9), and left L shape fixed head (9) is fixed on base (1), and left L shape fixed head (9) is located at the left side of slide rail (5); The hinged buckle in the right side (2) of left L shape fixed head (9), buckle (2) is located at the below of fixed contact (11), buckle (2) has the spring of insulating material (3) to be connected with fixed contact (11) by outer wrap, the upper right side of buckle (2) is chamfering (15), and the below of buckle (2) connects stay cord (4).

2. a kind of switch leveling style isolating switch according to claim 1, is characterized in that, described buckle (2) and stay cord (4) are made by insulating material.