A long-life AC isolating switch

Abstract

The utility model discloses a long-life AC isolating switch, which belongs to the technical field of electrical control supporting equipment, and aims at the problems of potential safety hazards caused by lack of stable support for knife switches and difficulty in ensuring stable closing connections. The utility model comprises a base plate and an insulator, wherein the insulator is fixedly installed on the top of the base plate, a wiring terminal is installed on the top of the insulator, an insulating device wire clamp is connected to the outer side of the wiring terminal, a clamping mechanism is arranged on the left wiring terminal, a support plate is fixedly connected to the right wiring terminal, a hinge block is hingedly installed on the support plate, a support mechanism is arranged in the right wiring terminal and is connected to the knife switch; the utility model can support the knife switch at a certain height after opening by means of the support mechanism when the knife switch is opened, thereby avoiding adhesion at the connection mechanism, forming a reliable insulating gap, thereby ensuring the safety after opening, and improving the practicality of the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical control supporting equipment, and in particular relates to a long-life AC isolating switch. Background Art

[0002] High-voltage disconnectors are mainly used in outdoor AC power systems. They are designed to switch live high-voltage lines and electrically isolate live high-voltage lines from electrical equipment such as high-voltage busbars or circuit breakers being repaired. The design of outdoor AC high-voltage enclosed disconnectors can effectively isolate voltage and avoid electrical accidents, thereby ensuring the safe operation of the power system. They can adapt to different voltage levels and various complex power system environments.

[0003] The prior art patent announcement number is CN220829906U, which is an outdoor AC high-voltage enclosed isolating switch. The patent includes a bottom plate, two insulators are fixed on the bottom plate by nuts, the top of the insulator is connected with a terminal by bolts, the left side is the first terminal, the right side is the second terminal, an insulating device clamp is arranged on the outside of the terminal, a connector is fixed by bolts in the middle of the upper side of the first terminal, a stopper is fixed by bolts in the middle of the upper side of the second terminal, a contact body is arranged in the terminal, and a knife switch is arranged on the upper side of the terminal. The beneficial effect is that the knife switch can be effectively locked and fixed, which improves the knife switch The fixing effect is improved to prevent it from loosening, thus ensuring the normal use of the isolating switch and improving the stability of the isolating switch; the fixing effect between the contact tongue and the contact body is improved to prevent sliding and loosening; a wear-resistant block is provided to increase the service life of the contact tongue, but there are still the following deficiencies in actual use: from a practical point of view, after the knife switch is disconnected, the device lacks stable support for the knife switch, which causes the knife switch to easily fit at the disconnected end. After the switch is opened, a reliable insulation gap needs to be established, which creates a safety hazard in use. At the same time, after the switch is closed, it is difficult to ensure the stability of the connection after closing through the "J"-shaped contact tongue and contact body setting, which may be squeezed out, thereby affecting the use of the circuit.

[0004] Therefore, a long-life AC isolating switch is needed to solve the problems in the prior art of lack of stable support for the knife switch, which poses a safety hazard and is difficult to ensure stable closing connection. Utility Model Content

[0005] The purpose of the utility model is to provide a long-life AC isolating switch to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-life AC isolating switch, comprising a base plate and an insulator, the insulator is fixedly installed on the top of the base plate, a terminal is installed on the top of the insulator, an insulating device wire clamp is connected to the outside of the terminal, a clamping mechanism is provided on the left terminal, a support plate is fixedly connected to the right terminal, a hinge block is hingedly installed on the support plate, a knife switch is connected to the upper part of the terminal through the hinge block, a supporting mechanism is provided in the right terminal and connected to the knife switch, and a connecting mechanism is provided in the left terminal and connected to the knife switch.

[0007] The supporting mechanism includes an installation groove, which is opened inside the right-side wiring terminal, and a tension spring is fixedly installed on the right side of the installation groove. The left end of the tension spring is fixedly connected to a connecting plate, and the upper end of the connecting plate is fixedly connected to a support rod. A fixed shaft is rotatably connected to the support rod, and the fixed shaft is fixedly connected to the wiring terminal and is arranged above the installation groove. A support block is fixedly connected to the bottom of the knife switch corresponding to the support rod.

[0008] It should be noted in the solution that the upper portion of the support rod is arranged in an arc-shaped surface, and the bottom of the support block is arranged in an irregular surface and matches the connecting plate and the support rod.

[0009] It is further worth mentioning that the connecting plate is provided in the form of a special-shaped block, and the angle between the connecting plate and the supporting rod exceeds 90°.

[0010] It should be further explained that the clamping mechanism includes a clamping block, which is fixedly connected to the left end of the knife switch. A movable clamp matching with the clamping block is installed on the wiring terminal corresponding to the clamping block for clamping and limiting the clamping block.

[0011] As a preferred embodiment, the connecting mechanism includes a contact body, which is installed in the left wiring terminal. The contact body is fixedly connected with a contact tongue at the bottom of the knife switch, and a clamping strip is arranged on the contact tongue.

[0012] As a preferred implementation, the side wall of the contact body is arranged in a corrugated shape, and the clamping strip is provided with a plurality of contact bodies on the surface of the contact tongue.

[0013] As a preferred implementation, the clip strip is made of an insulating material with elastic deformation.

[0014] Compared with the prior art, the utility model provides a long-life AC isolating switch, which has at least the following beneficial effects:

[0015] (1) Through the support mechanism, when the knife switch is opened, the knife switch can be supported at a certain height after opening, thereby avoiding the connection mechanism from being fitted, forming a reliable insulation gap, thereby ensuring the safety after opening and improving the practicality of the device.

[0016] (2) By setting the clamping mechanism in coordination with the connection mechanism, after the knife switch is closed, the knife switch can maintain a stable connection, and then the connection stability after closing is ensured by the connection mechanism, so as to improve the safety of circuit use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the closing state of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in the open state;

[0019] Figure 3 It is a schematic diagram of the partial cutaway structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the internal cutaway structure of the utility model in a side view.

[0021] In the figure: 1, bottom plate; 2, insulator; 3, terminal; 4, insulating equipment wire clamp; 5, support plate; 501, hinge block; 6, knife switch; 7, support mechanism; 701, mounting groove; 702, tension spring; 703, fixed shaft; 704, support rod; 705, connecting plate; 706, supporting block; 8, clamping mechanism; 801, clamping block; 802, movable clamp; 9, connecting mechanism; 901, contact body; 902, contact tongue; 903, clamping strip. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] See also Figure 1-4 The utility model provides a long-life AC disconnect switch, including a base plate 1 and an insulator 2, the insulator 2 is fixedly installed on the top of the base plate 1, a terminal 3 is installed on the top of the insulator 2, an insulating device wire clamp 4 is connected to the outside of the terminal 3, a clamping mechanism 8 is arranged on the left terminal 3, a support plate 5 is fixedly connected to the right terminal 3, a hinge block 501 is hingedly installed on the support plate 5, a knife switch 6 is connected to the upper part of the terminal 3 through the hinge block 501, a supporting mechanism 7 is arranged in the right terminal 3 and connected to the knife switch 6, and a connecting mechanism 9 is arranged in the left terminal 3 and connected to the knife switch 6.

[0024] The support mechanism 7 is used to provide support for the knife switch 6 after opening to form an insulation gap to ensure safe use. At the same time, the clamping mechanism 8 and the connecting mechanism 9 are used to improve the stability of the knife switch 6 after closing, thereby further ensuring safe use.

[0025] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth specifically explaining that the support mechanism 7 includes a mounting groove 701, which is opened inside the right-side terminal 3, and a tension spring 702 is fixedly installed on the right side in the mounting groove 701. A connecting plate 705 is fixedly connected to the left end of the tension spring 702, and a support rod 704 is fixedly connected to the upper end of the connecting plate 705. A fixed shaft 703 is rotatably connected to the support rod 704, and the fixed shaft 703 is fixedly connected to the terminal 3 and is arranged above the mounting groove 701. A support block 706 is fixedly connected above the support rod 704 at the bottom of the knife switch 6. The upper part of the support rod 704 is arranged in an arc-shaped surface, and the bottom of the support block 706 is arranged in a special-shaped surface and matches the connecting plate 705 and the support rod 704. The connecting plate 705 is arranged in an special-shaped block, and the angle between it and the support rod 704 exceeds 90°.

[0026] During the opening process, the elastic reset effect of the tension spring 702 exerts a certain pulling force on the connecting plate 705, causing the support rod 704 to rotate on the fixed shaft 703, and then cooperates with the rotation of the support rod 704 to squeeze the support block 706, thereby further causing the knife switch 6 to rotate through the hinge block 501, and supporting the knife switch 6 with the cooperation of the support rod 704 and the support block 706, which can effectively prevent the contact tongue 902 at the bottom left side of the knife switch 6 from being released from the contact body 901, forming a reliable insulation gap, thereby ensuring the safety after opening the switch, so as to improve the practicability of the device.

[0027] According to the above working process, it can be known that: through the support mechanism 7, when the knife switch 6 is opened, the knife switch 6 after opening can be supported at a certain height, thereby avoiding the connection mechanism 9 from fitting together, forming a reliable insulation gap, thereby ensuring the safety after opening and improving the practicability of the device.

[0028] Further as Figure 1 and Figure 2 As shown, it is worth explaining in detail that the clamping mechanism 8 includes a clamping block 801, which is fixedly connected to the left end of the knife switch 6. The clamping block 801 corresponds to a movable clamping member 802 that matches the wiring terminal 3 and is used to clamp and limit the clamping block 801.

[0029] During use, when the knife switch 6 is closed, the left side of the knife switch 6 is pressed down so that the clamping block 801 and the movable clamping member 802 are engaged with each other to limit the position of the knife switch 6, so as to ensure the stability of the knife switch 6 after closing.

[0030] Further as Figure 2 and Figure 4 As shown, it is worth specifically explaining that the connecting mechanism 9 includes a contact body 901, which is installed in the left terminal 3. The contact body 901 is fixedly connected to a contact tongue 902 at the bottom of the knife switch 6. A clamping strip 903 is arranged on the contact tongue 902. The side wall of the contact body 901 is arranged in a corrugated shape. A plurality of clamping strips 903 are arranged on the surface of the contact tongue 902 and are aligned with the contact body 901. The clamping strip 903 is made of an insulating material with elastic deformation.

[0031] When in use, the contact tongue 902 is inserted into the contact body 901 under the extrusion and deformation of the clamping strip 903, and at the same time, the bottom end of the contact tongue 902 contacts the bottom of the contact body 901 to form a connection, thereby ensuring the stability of the circuit operation.

[0032] This scheme has the following working process: when this device is used, when the knife switch 6 is closed, the left side of the knife switch 6 is pressed down so that the clamping block 801 and the movable clamping member 802 are clamped to limit the knife switch 6, and at the same time, the contact tongue 902 is inserted into the contact body 901 under the extrusion and deformation of the clamping strip 903, and at the same time, the bottom end of the contact tongue 902 contacts the bottom of the contact body 901 to form a connection, thereby ensuring the stability of the circuit operation. When the knife switch 6 needs to be opened, the movable clamping member 802 is opened to release the clamping limit between it and the clamping block 801, thereby facilitating the lifting of the knife switch 6 so that it can be hinged. The block 501 rotates, and at the same time, the elastic reset effect of the tension spring 702 exerts a certain pulling force on the connecting plate 705, so that the support rod 704 rotates on the fixed shaft 703, and then cooperates with the rotation of the support rod 704 to make the support rod 704 squeeze the support block 706, so that the knife switch 6 can be further rotated through the hinge block 501, and the knife switch 6 is supported under the cooperation of the support rod 704 and the support block 706, which can effectively prevent the contact tongue 902 at the bottom left side of the knife switch 6 from being released from the contact body 901, forming a reliable insulation gap, thereby ensuring the safety after the opening of the switch, so as to improve the practicality of the device.

[0033] In summary: through the setting of the supporting mechanism 7, when the knife switch 6 is opened, the knife switch 6 can be supported at a certain height after opening, thereby avoiding the connection mechanism 9 from fitting together, forming a reliable insulation gap, thereby ensuring the safety after opening and improving the practicability of the device; through the setting of the clamping mechanism 8 in coordination with the setting of the connecting mechanism 9, after the knife switch 6 is closed, the knife switch 6 can maintain a stably connected connection, and then the connection stability after closing is guaranteed through the connecting mechanism 9, so as to improve the safety of circuit use.

Claims

1. A long-life AC disconnector, comprising a base plate (1) and an insulator (2), characterized in that: The insulator (2) is fixedly mounted on the top of the base plate (1); a wiring terminal (3) is mounted on the top of the insulator (2); an insulating device wire clamp (4) is connected to the outside of the wiring terminal (3); a clamping mechanism (8) is arranged on the left wiring terminal (3); a support plate (5) is fixedly connected to the right wiring terminal (3); a hinge block (501) is hingedly mounted on the support plate (5); a knife switch (6) is connected to the upper part of the wiring terminal (3) via the hinge block (501); a supporting mechanism (7) is arranged inside the right wiring terminal (3) and is connected to the knife switch (6); a connecting mechanism (9) is arranged inside the left wiring terminal (3) and is connected to the knife switch (6); The support mechanism (7) comprises a mounting groove (701), wherein the mounting groove (701) is arranged inside the right side wiring terminal (3), a tension spring (702) is fixedly installed on the right side inside the mounting groove (701), a connecting plate (705) is fixedly connected to the left end of the tension spring (702), a support rod (704) is fixedly connected to the upper end of the connecting plate (705), a fixed shaft (703) is rotatably connected to the support rod (704), the fixed shaft (703) is fixedly connected to the wiring terminal (3) and is arranged above the mounting groove (701), and a support block (706) is fixedly connected above the support rod (704) corresponding to the bottom of the knife switch (6).

2. The long-life AC isolating switch according to claim 1, characterized in that: The upper portion of the support rod (704) is arranged in an arc-shaped surface, and the bottom portion of the support block (706) is arranged in an irregular surface and matches the connecting plate (705) and the support rod (704).

3. The long-life AC isolating switch according to claim 1, characterized in that: The connecting plate (705) is provided in the form of a special-shaped block, and the angle between the connecting plate (705) and the supporting rod (704) exceeds 90°.

4. The long-life AC isolating switch according to claim 1, characterized in that: The clamping mechanism (8) comprises a clamping block (801), the clamping block (801) being fixedly connected to the left end of the knife switch (6), and a movable clamping member (802) matching with the clamping block (801) being installed on the corresponding wiring terminal (3) for clamping and limiting the clamping block (801).

5. The long-life AC isolating switch according to claim 1, characterized in that: The connecting mechanism (9) comprises a contact body (901), the contact body (901) is installed in the left wiring terminal (3), the contact body (901) is fixedly connected with a contact tongue (902) corresponding to the bottom of the knife switch (6), and a clamping strip (903) is arranged on the contact tongue (902).

6. The long-life AC isolating switch according to claim 5, characterized in that: The side wall of the contact body (901) is arranged in a corrugated shape, and a plurality of the clamping strips (903) are arranged on the surface of the contact tongue (902) and aligned with the contact body (901).

7. The long-life AC isolating switch according to claim 5, characterized in that: The clamping strip (903) is made of an insulating material with elastic deformation.

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