Switching contact for tap selector
By using springs and fixing mechanisms in the switching contacts of the tap selector, the problem of contact disconnection in a vibration environment is solved, stable current conduction and cable connection stability are achieved, ensuring the normal operation of the equipment.
Patent Information
- Application Number
- CN202422638543.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The switching contacts of existing tap selectors are prone to disconnection under vibration or impact conditions, resulting in current not being able to pass smoothly and affecting the normal operation of the equipment.
A spring is used to apply elastic force to the movable plate, the movable plate applies elastic force to the fixed column, and the fixed column applies elastic force to the bridge contact, so that the bridge contact is in close contact with the static contact, and the cable is fixed by a fixing mechanism and bolts to ensure a stable connection.
Ensure stable contact between the bridge contact and the static contact in a vibration environment to avoid disconnection, ensure smooth flow of current, and ensure normal operation of the equipment and stable cable connection.
Smart Images
Figure CN223321121U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer on-load tap changers, in particular to a switching contact for a tap selector. Background Art
[0002] The switching contacts used in a tap selector are devices used to adjust the connection method of the transformer windings to achieve fine voltage regulation. They are primarily used in power transformers to adjust the transformer's output voltage to meet the needs of the power grid or end users. These contacts, used in conjunction with the tap selector, can precisely adjust the effective number of turns in the transformer windings, thereby finely regulating the output voltage. The design of these switching contacts must take into account both mechanical and electrical characteristics to ensure long-term reliable and stable operation.
[0003] However, existing tap selectors usually use a simple sliding contact method to connect the moving contact and the static contact. When the device is subjected to harsh environments such as vibration or impact, this simple sliding contact method often cannot effectively maintain a stable connection between the contacts. Due to the lack of sufficient mechanical stability and shock resistance, disconnection is prone to occur between the contacts. This disconnection will prevent the current from passing smoothly, thereby affecting the normal operation and use of the equipment.
[0004] Therefore, a switching contact for a tap selector is proposed. Utility Model Content
[0005] The purpose of the present utility model is to provide a switching contact for a tap selector to solve the problems raised by the above background technology.
[0006] To achieve the above purpose, the present invention provides the following technical solutions:
[0007] A switching contact for a tap selector, comprising: an upper flange,
[0008] a lower flange, arranged below the upper flange;
[0009] There are multiple insulating plates, and both ends of the insulating plates are fixedly mounted on the outer wall of the upper flange and the outer wall of the lower flange respectively;
[0010] an insulating cylinder, disposed inside the upper flange;
[0011] An adjustment mechanism is provided outside the insulating cylinder and is used to adjust the contact of the contacts; the adjustment mechanism includes a plurality of contact rings fixedly mounted on the outer wall of the insulating cylinder;
[0012] The fixing mechanism is arranged outside the adjusting mechanism, and the fixing mechanism includes a plurality of static contacts which are movable and pass through the side surfaces of the plurality of insulating plates respectively.
[0013] Preferably, two connecting plates are provided on one side of the contact ring, and arc grooves are respectively opened at one end of the two connecting plates near the side surface. The two connecting plates are fixedly connected by screws, and the inner walls of the two arc grooves are squeezed and connected to the outer wall of the contact ring.
[0014] Preferably, the two connecting plates are provided with movable grooves near the side surfaces, and the inner walls of the two movable grooves are slidably connected with bridge contacts, the bridge contacts are shaped like a "mountain", and the two bridge contacts are slidably connected to the outer walls of the static contacts near the side surfaces.
[0015] Preferably, one end of the two bridge contacts is provided with an arc groove close to the side, the inner walls of the two arc grooves are slidably connected to the outer wall of the contact ring, and the two bridge contacts are fixedly connected with a plurality of fixing columns away from the side.
[0016] Preferably, the inner walls of the two movable grooves are respectively provided with multiple groove bodies, the other ends of the multiple fixed columns slide through the inner walls of the two movable grooves and extend into the interior of the multiple groove bodies, the inner walls of the multiple groove bodies are respectively slidably connected with movable plates, the top surfaces of the multiple movable plates are respectively fixedly installed with springs, and the other ends of the multiple springs are respectively fixedly connected to the inner wall of one end of the groove body.
[0017] Preferably, the plurality of static contacts are fixedly connected to the side surface of the insulating plate through the first fixed shell and the second fixed shell.
[0018] Preferably, a fixing plate 1 and a fixing plate 2 are fixedly mounted on one end surface of the static contact, and through holes are respectively formed on the top surfaces of the fixing plate 1 and the fixing plate 2, and bolts are threadedly connected to the inner walls of the through holes.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] The utility model applies elastic force to the movable plate through the spring, the movable plate applies elastic force to the fixed column, and the fixed column applies elastic force to the bridge contact, so that the two bridge contacts can be closely contacted with the static contact. When the device vibrates, the setting of the spring can still ensure that the two bridge contacts are in squeeze contact with the static contact, and disconnection is not likely to occur between the contacts, thereby ensuring that the current can pass smoothly, thereby ensuring the normal operation and use of the equipment.
[0021] By setting the static contact, fixed shell one and fixed shell two, the fixed shell one and fixed shell two can fix the static contact. By setting the fixed plate one, fixed plate two and bolts, when connecting to the external cable, the end of the cable can be installed between the fixed plate one and the fixed plate two. By the limiting effect of the fixed plate one and the fixed plate two and the fixation of the bolts, the cable connection can be ensured to be more stable and not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0023] Figure 2 This is an exploded view of the three-dimensional structure of the utility model;
[0024] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;
[0025] Figure 4 This is an exploded view of a partial three-dimensional structure of the utility model;
[0026] Figure 5 It is a schematic cross-sectional view of a local three-dimensional structure of the present utility model;
[0027] Figure 6 This is an exploded view of the three-dimensional structure of the adjustment mechanism of the utility model;
[0028] Figure 7 For the utility model Figure 1 Enlarged view of point A in the middle.
[0029] In the picture:
[0030] 1. Upper flange; 101. Lower flange; 102. Insulation plate; 103. Insulation cylinder;
[0031] 2. Adjustment mechanism; 201. Contact ring; 202. Connecting plate; 203. Arc groove; 204. Moving groove; 205. Bridge contact; 206. Fixed column; 207. Slot body; 208. Moving plate; 209. Spring;
[0032] 3. Fixing mechanism; 301. Static contact; 302. Fixing shell 1; 303. Fixing shell 2; 304. Fixing plate 1; 305. Fixing plate 2; 306. Bolt. DETAILED DESCRIPTION
[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0034] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.
[0035] like Figure 1-7As shown, the present application provides a switching contact for a tap selector, including an upper flange 1, a lower flange 101, which is arranged below the upper flange 1, an insulating plate 102, which is provided in plurality and fixedly mounted at both ends on the outer wall of the upper flange 1 and the outer wall of the lower flange 101, an insulating cylinder 103, which is arranged inside the upper flange 1, and an adjustment mechanism 2, which is arranged outside the insulating cylinder 103 and is used to adjust the contact of the contact; the adjustment mechanism 2 includes a plurality of contact rings 201 fixedly mounted on the outer wall of the insulating cylinder 103, and a fixing mechanism 3, which is arranged outside the adjustment mechanism 2, and the fixing mechanism 3 includes a plurality of static contacts 301 that movably penetrate the sides of the plurality of insulating plates 102.
[0036] In this embodiment: through the setting of the adjustment mechanism 2, it can be ensured that the two bridge contacts 205 are in squeeze contact with the static contact 301, and disconnection is not likely to occur between the contacts, ensuring that the current can pass smoothly, thereby ensuring the normal operation and use of the equipment, and the setting of the fixing mechanism 3 can ensure that the cable connection is more stable and not easy to loosen.
[0037] Specifically, such as Figure 1-6 As shown, two connecting plates 202 are provided on one side of the contact ring 201. Arc grooves 203 are respectively opened at one end of the two connecting plates 202 near the side. The two connecting plates 202 are fixedly connected by screws, and the inner walls of the two arc grooves 203 are squeezed and connected to the outer wall of the contact ring 201.
[0038] In this embodiment, the contact ring 201 can be squeezed and fixed by the arc-shaped groove 203 , ensuring that the two connecting plates 202 can be installed on the contact ring 201 .
[0039] Specifically, such as Figure 1-6 As shown, the two connecting plates 202 are provided with movable grooves 204 near the side, and the inner walls of the two movable grooves 204 are slidingly connected with bridge contacts 205, which are shaped like a "mountain". The two bridge contacts 205 are slidingly connected to the outer wall of the static contact 301 near the side.
[0040] In this embodiment, the bridge contacts 205 are shaped like a mountain, so that the two bridge contacts 205 can make four-point contact with the outer wall of the static contact 301, and the two bridge contacts 205 can be more firmly connected to the outer wall of the static contact 301 and are not easily disconnected.
[0041] Specifically, such as Figure 1-6 As shown, arc grooves 203 are respectively opened at one end of the two bridge contacts 205 near the side, and the inner walls of the two arc grooves 203 are slidably connected to the outer wall of the contact ring 201. A plurality of fixing columns 206 are respectively fixedly connected to the two bridge contacts 205 away from the side.
[0042] In this embodiment, the arc-shaped groove 203 is provided to ensure that the bridge contact 205 transmits current to the contact ring 201 .
[0043] Specifically, such as Figure 1-6 As shown, the inner walls of the two movable grooves 204 are respectively provided with multiple groove bodies 207, and the other ends of the multiple fixed columns 206 slide through the inner walls of the two movable grooves 204 and extend into the interior of the multiple groove bodies 207. The inner walls of the multiple groove bodies 207 are respectively slidably connected with movable plates 208, and the top surfaces of the multiple movable plates 208 are respectively fixedly installed with springs 209, and the other ends of the multiple springs 209 are respectively fixedly connected to the inner wall of one end of the groove body 207.
[0044] In this embodiment, the spring 209 applies elastic force to the movable plate 208 , the movable plate 208 applies elastic force to the fixed column 206 , and the fixed column 206 applies elastic force to the bridge contact 205 , so that the bridge contact 205 and the static contact 301 are in more stable contact.
[0045] Specifically, such as Figure 1-7 As shown, a plurality of static contacts 301 are fixedly connected to the side surface of the insulating plate 102 through a fixed shell 1 302 and a fixed shell 2 303 .
[0046] In this embodiment, the static contact 301 can be fixed by the fixing shell 1 302 and the fixing shell 2 303 .
[0047] Specifically, such as Figure 1-7 As shown, a fixing plate 1 304 and a fixing plate 2 305 are fixedly mounted on one end surface of the static contact 301 , and through holes are respectively formed on the top surfaces of the fixing plate 1 304 and the fixing plate 2 305 , and bolts 306 are threadedly connected to the inner walls of the through holes.
[0048] In this embodiment, the limiting effect of the fixing plate 1 304 and the fixing plate 2 305 and the fixing of the bolt 306 can ensure that the cable connection is more stable and not easy to loosen.
[0049] The specific solution is as follows: the spring 209 applies elastic force to the movable plate 208, the movable plate 208 applies elastic force to the fixed column 206, and the fixed column 206 applies elastic force to the bridge contact 205, so that the two bridge contacts 205 can be closely in contact with the static contact 301. When the device vibrates, the setting of the spring 209 can still ensure that the two bridge contacts 205 are in squeeze contact with the static contact 301, and the disconnection between the contacts is not easy to occur, ensuring that the current can pass smoothly, thereby ensuring the normal operation and use of the device. The static contact 301, the fixed shell 1 302 and the fixed shell 2 303 are provided. The fixed shell 1 302 and the fixed shell 2 303 can fix the static contact 301. Through the arrangement of the fixed plate 1 304, the fixed plate 2 305 and the bolt 306, when connecting to the external cable, the end of the cable can be installed between the fixed plate 1 304 and the fixed plate 2 305. Through the limiting effect of the fixed plate 1 304 and the fixed plate 2 305 and the fixation of the bolt 306, the cable connection can be ensured to be more stable and not easy to loosen.
[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative; within the spirit of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.
[0051] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.
Claims
1. A switching contact for a tap selector, comprising: The upper flange (1) is characterized in that: A lower flange (101) is arranged below the upper flange (1); A plurality of insulating plates (102) are provided, and both ends of the insulating plates are fixedly mounted on the outer wall of the upper flange (1) and the outer wall of the lower flange (101), respectively; An insulating cylinder (103) is arranged inside the upper flange (1); An adjustment mechanism (2) is arranged outside the insulating cylinder (103) and is used to adjust the contact of the contacts; the adjustment mechanism (2) comprises a plurality of contact rings (201) fixedly mounted on the outer wall of the insulating cylinder (103); A fixing mechanism (3) is arranged outside the adjusting mechanism (2), and the fixing mechanism (3) includes a plurality of static contacts (301) that are movable and penetrate the sides of the plurality of insulating plates (102).
2. A switching contact for a tap selector according to claim 1, characterized in that: Two connecting plates (202) are provided on one side of the contact ring (201), and arc-shaped grooves (203) are respectively provided at one end of the two connecting plates (202) near the side surface. The two connecting plates (202) are fixedly connected by screws, and the inner walls of the two arc-shaped grooves (203) are extruded and connected to the outer wall of the contact ring (201).
3. A switching contact for a tap selector according to claim 2, characterized in that: The two connecting plates (202) are respectively provided with movable grooves (204) near the side surfaces, and the inner walls of the two movable grooves (204) are respectively slidably connected with bridge contacts (205), and the bridge contacts (205) are shaped like a "mountain", and the two bridge contacts (205) are slidably connected to the outer wall of the static contact (301) near the side surfaces.
4. A switching contact for a tap selector according to claim 3, characterized in that: One end of the two bridge contacts (205) is provided with an arc groove (203) near the side, the inner walls of the two arc grooves (203) are slidably connected to the outer wall of the contact ring (201), and the two bridge contacts (205) are fixedly connected with a plurality of fixing columns (206) away from the side.
5. The switching contact for a tap selector according to claim 4, characterized in that: The inner walls of the two movable grooves (204) are respectively provided with a plurality of groove bodies (207); the other ends of the plurality of fixed columns (206) respectively slide through the inner walls of the two movable grooves (204) and extend into the interior of the plurality of groove bodies (207); the inner walls of the plurality of groove bodies (207) are respectively slidably connected with movable plates (208); the top surfaces of the plurality of movable plates (208) are respectively fixedly installed with springs (209); the other ends of the plurality of springs (209) are respectively fixedly connected to the inner wall of one end of the groove body (207).
6. The switching contact for a tap selector according to claim 1, characterized in that: The plurality of static contacts (301) are fixedly connected to the side surface of the insulating plate (102) via a first fixed shell (302) and a second fixed shell (303).
7. A switching contact for a tap selector according to claim 6, characterized in that: One end face of the static contact (301) is fixedly mounted with a fixing plate 1 (304) and a fixing plate 2 (305); the top faces of the fixing plate 1 (304) and the top faces of the fixing plate 2 (305) are respectively provided with through holes, and the inner walls of the through holes are threadedly connected with bolts (306).