High-voltage isolating switch

Abstract

The utility model discloses a high-voltage isolating switch which comprises a fixed seat capable of being installed on a support and insulating columns installed on the two sides of the top of the fixed seat, the insulating columns are fixedly installed in the centers of the two sides of the top of the fixed seat, the top of one insulating column is provided with a moving contact, the top of the other insulating column is provided with a static contact, and the moving contact is connected with the static contact. According to the utility model, the return spring can push the sliding plate to enable the locking rod to extend out of the outer side of the fastening seat and to be inserted into the insertion hole in the wobble plate, so that the position of the wobble plate is fixed; and during unlocking, the locking rod can be safely and easily driven to be separated from the insertion hole only by pushing the sliding rod, so that the risk of electric shock of workers is avoided, and the safety of the workers during operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a high-voltage isolating switch. Background Art

[0002] High-voltage isolating switches are important electrical appliances in power plants, substations and various electrical supply and use systems. They are used to switch live high-voltage lines and isolate live high-voltage lines from electrical equipment such as high-voltage busbars or circuit breakers under maintenance, ensuring the safety of high-voltage electrical appliances and devices during maintenance work and isolating voltage. However, high-voltage isolating switches cannot be used to cut off or input load current or interrupt short-circuit current. At the moment the switch is disconnected, due to the large current, there is a possibility that the knife switch will bounce open.

[0003] After searching, Chinese patent announcement No. CN209087679U discloses a high-voltage disconnector, including a fixed seat, on which two insulators are fixed, and static contacts and moving contacts are respectively arranged at the top ends of the two insulators, and a knife switch is hinged on the static contact. The high-voltage disconnector also includes a locking assembly for locking the knife switch on the moving contact. The locking assembly of the utility model is arranged in the middle of the two knife switches, and the rotating plate is pressed against by a spring and a slider to fix the knife switch.

[0004] However, such a locking structure still requires manual turning of the rotating plate during the unlocking process. The location of the rotating plate is relatively dangerous as it is set in the middle of the knife switch. Therefore, if the worker is not careful when turning it, there will be a risk of electric shock. Utility Model Content

[0005] The utility model aims to provide a high-voltage isolating switch to solve the problem in the above-mentioned background technology that it is dangerous to manually turn the rotating plate.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-voltage disconnector, comprising a fixing seat that can be mounted on a bracket and insulating columns mounted on both sides of the top of the fixing seat, insulating columns are fixedly mounted at the center of both sides of the top of the fixing seat, a moving contact is mounted on the top of one of the insulating columns, a static contact is mounted on the top of the other insulating column, a hinge seat is fixedly connected to the top of the static contact, a knife is rotatably connected to the outer side of the hinge seat, a transmission assembly for driving the knife to rotate around the hinge seat is arranged between the knife and the fixing seat, a swing plate is connected to one side of the transmission assembly, and a locking assembly for fixing the swing plate is installed at the top of the foot of the fixing seat;

[0007] The locking assembly includes a fastening seat, the top of the foot of the fixing seat is fixedly connected to the fastening seat, the inside of the fastening seat is slidably connected to a slide plate, a return spring is installed between the slide plate and the inner wall of the fastening seat, a locking rod is fixedly connected to the side of the slide plate away from the return spring, one end of the locking rod passes through the fastening seat and slides with the fastening seat, and two sockets for use with the locking rods are provided inside the wobble plate.

[0008] As a preferred solution of the utility model, the transmission assembly includes a long transmission rod, a rotating rod is rotatably connected between the middle parts of the two side edges of the fixed seat, a connecting rod is fixedly connected to the middle part of the outer side of the rotating rod, an end of the connecting rod away from the rotating rod is rotatably connected to the long transmission rod, an end of the long transmission rod away from the connecting rod is rotatably connected to the middle part of the knife, and one end of the rotating rod passes through the outer side of the fixed seat and is fixedly connected to the swing plate.

[0009] As a preferred solution of the utility model, a sliding groove is provided on the side of the fastening seat away from the swing plate swing handle, and a sliding rod is fixedly connected to the middle of the sliding plate close to the sliding groove, and the sliding rod is slidably connected to the inside of the sliding groove.

[0010] As a preferred solution of the utility model, the switch knife can come into contact with the moving contact after rotating counterclockwise around the hinge seat.

[0011] As a preferred solution of the utility model, bolts are installed at the four corners of the bottom of the fixing seat.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the return spring provided in the utility model will push the slide plate to make the locking rod extend out of the outside of the fastening seat and insert it into the socket on the wobble plate, thereby fixing the position of the wobble plate. When unlocking, the locking rod can be safely and easily driven to disengage from the socket by pushing the slide bar, thereby avoiding the risk of electric shock for workers and greatly improving the safety of workers during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model after the knife switch is closed;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the knife gate is opened;

[0015] Figure 3 This is a schematic diagram of the structure inside the fastening seat of the utility model;

[0016] Figure 4 For this utility model Figure 1 Enlarged view of point A in the middle.

[0017] In the figure: 1. fixed seat; 2. insulating column; 3. static contact; 4. moving contact; 5. hinge seat; 6. knife switch; 7. transmission assembly; 71. transmission long rod; 72. connecting rod; 73. rotating rod; 8. pendulum plate; 9. locking assembly; 91. fastening seat; 92. return spring; 93. slide plate; 94. locking rod; 95. socket; 96. slide groove; 97. slide rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: a high-voltage disconnector, comprising a fixed seat 1 which can be mounted on a bracket and insulating columns 2 mounted on both sides of the top of the fixed seat 1, insulating columns 2 are fixedly mounted at the center of both sides of the top of the fixed seat 1, a moving contact 4 is mounted on the top of one of the insulating columns 2, a static contact 3 is mounted on the top of the other insulating column 2, a hinge seat 5 is fixedly connected to the top of the static contact 3, a knife 6 is rotatably connected to the outer side of the hinge seat 5, the knife 6 rotates clockwise around the hinge seat 5 and can be separated from the moving contact 4, the knife 6 rotates counterclockwise around the hinge seat 5 and can contact the moving contact 4, a transmission assembly 7 for driving the knife 6 to rotate around the hinge seat 5 is arranged between the knife 6 and the fixed seat 1, a swing plate 8 is connected to one side of the transmission assembly 7, the swing plate 8 can drive the knife 6 to rotate safely and quickly through the transmission assembly 7, and a locking assembly 9 for fixing the swing plate 8 is installed at the top of the support foot of the fixed seat 1;

[0020] The locking assembly 9 includes a fastening seat 91, the top of the foot of the fixing seat 1 is fixedly connected with the fastening seat 91, the fastening seat 91 is a square structure, and is installed in the middle of the fixing seat 1. A slide plate 93 is slidably connected inside the fastening seat 91, and a return spring 92 is installed between the slide plate 93 and the inner wall of the fastening seat 91. A locking rod 94 is fixedly connected to the side of the slide plate 93 away from the return spring 92. The return spring 92 will push the slide plate 93 to make the locking rod 94 extend out of the outside of the fastening seat 91, and one end of the locking rod 94 passes through the fastening seat 91 and is fixed to the fastening seat 91 slides, and two sockets 95 for use with the locking rod 94 are provided inside the swing plate 8. The fastening seat 91 can be inserted into the two different sockets 95 to fix the gate knife 6 after closing or opening. A sliding groove 96 is provided on the side of the fastening seat 91 away from the swing handle of the swing plate 8, and a sliding rod 97 is fixedly connected to the middle part of the slide plate 93 near the sliding groove 96. The sliding rod 97 is slidably connected to the inside of the sliding groove 96. By toggling the sliding rod 97, the locking rod 94 can be driven to move more easily, which facilitates the locking rod 94 to insert into the socket 95 or leave the socket 95.

[0021] Among them, the transmission assembly 7 includes a transmission long rod 71, a rotating rod 73 is rotatably connected between the middle parts of the two side edges of the fixed seat 1, a connecting rod 72 is fixedly connected to the middle part of the outer side of the rotating rod 73, and the end of the connecting rod 72 away from the rotating rod 73 is rotatably connected to the transmission long rod 71, and the end of the transmission long rod 71 away from the connecting rod 72 is rotatably connected to the middle part of the knife gate 6. One end of the rotating rod 73 passes through the outer side of the fixed seat 1 and is fixedly connected to the swing plate 8. After holding the swing plate 8, rotating the rotating rod 73 clockwise will drive the connecting rod 72 to rotate, so that the transmission long rod 71 will push the knife gate 6 to rotate clockwise around the hinge seat 5, and the knife gate 6 can be separated from the moving contact 4. Conversely, the transmission long rod 71 will pull the knife gate 6 to rotate counterclockwise around the hinge seat 5, and the knife gate 6 can contact and close with the moving contact 4.

[0022] The knife switch 6 can contact the moving contact 4 after rotating counterclockwise around the hinge seat 5 .

[0023] Among them, bolts are installed at the four corners of the bottom of the fixing base 1, and the bolts can make it easier to install the fixing base 1 with an external bracket.

[0024] Specifically, the fixing seat 1 is installed with the external bracket by bolts, and then the circuit is turned on. When the knife switch 6 needs to be opened, the sliding rod 97 can be pushed backward to make the slide plate 93 drive the locking rod 94 to squeeze the return spring 92 backward, so that the return spring 92 is separated from the inside of the socket 95, and then the swing plate 8 is held and the rotating rod 73 is rotated clockwise to drive the connecting rod 72 to rotate, so that the transmission long rod 71 will push the knife switch 6 to rotate clockwise around the hinge seat 5, and the knife switch 6 can be separated from the moving contact 4. Then, the slide plate 93 drives the locking rod 94 to be inserted into the teammate's socket 95 to fix the swing plate 8 under the elastic force of the return spring 92. Conversely, the transmission long rod 71 will pull the knife switch 6 to rotate counterclockwise around the hinge seat 5, and the knife switch 6 can contact and close with the moving contact 4.

[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage disconnect switch, comprising a fixing base (1) that can be mounted on a bracket and insulating columns (2) mounted on both sides of the top of the fixing base (1), characterized in that: Insulating columns (2) are fixedly mounted at the center of both sides of the top of the fixing seat (1), a moving contact (4) is mounted on the top of one of the insulating columns (2), a stationary contact (3) is mounted on the top of the other insulating column (2), a hinge seat (5) is fixedly connected to the top of the stationary contact (3), a switch (6) is rotatably connected to the outer side of the hinge seat (5), a transmission assembly (7) for driving the switch (6) to rotate around the hinge seat (5) is arranged between the switch (6) and the fixing seat (1), a swing plate (8) is connected to one side of the transmission assembly (7), and a locking assembly (9) for fixing the swing plate (8) is installed at the top of the support leg of the fixing seat (1); The locking assembly (9) comprises a fastening seat (91), the top of the leg of the fixing seat (1) is fixedly connected to the fastening seat (91), the interior of the fastening seat (91) is slidably connected to a slide plate (93), a return spring (92) is installed between the slide plate (93) and the inner wall of the fastening seat (91), a locking rod (94) is fixedly connected to the side of the slide plate (93) away from the return spring (92), one end of the locking rod (94) passes through the fastening seat (91) and slides with the fastening seat (91), and two sockets (95) for use with the locking rods (94) are provided inside the swing plate (8).

2. The high voltage disconnector according to claim 1, characterized in that: The transmission assembly (7) comprises a transmission long rod (71), a rotating rod (73) is rotatably connected between the middle parts of the two side edges of the fixed seat (1), a connecting rod (72) is fixedly connected to the middle part of the outer side of the rotating rod (73), one end of the connecting rod (72) away from the rotating rod (73) is rotatably connected to the transmission long rod (71), one end of the transmission long rod (71) away from the connecting rod (72) is rotatably connected to the middle part of the gate knife (6), and one end of the rotating rod (73) passes through the outer side of the fixed seat (1) and is fixedly connected to the swing plate (8).

3. The high voltage disconnector according to claim 2, characterized in that: A slide groove (96) is provided on the side of the fastening seat (91) away from the swing handle of the swing plate (8), and a slide rod (97) is fixedly connected to the middle part of the slide plate (93) close to the slide groove (96), and the slide rod (97) is slidably connected to the inside of the slide groove (96).

4. The high voltage disconnector according to claim 3, characterized in that: The switch blade (6) can come into contact with the moving contact (4) after rotating counterclockwise around the hinge seat (5).

5. The high voltage disconnector according to claim 4, characterized in that: Bolts are installed at the four corners of the bottom of the fixing seat (1).

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