Mechanical interlocking mechanism of CB-level left-right arrangement type medium-voltage dual-power cabinet
By setting up the spindle swing arm and tripping rod assembly in the CB-level medium-voltage dual power supply cabinet, and using the sliding connection between the guide cover and the shaft, the problem of low reliability of the mechanical interlocking device in the prior art is solved, and high Reliability and simplified installation.
Patent Information
- Application Number
- CN202323348291.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-08
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-08
AI Technical Summary
The mechanical interlocking devices of existing CB-level medium-voltage dual power cabinets are mostly installed outside the cabinet, flexible or rigid interlocking, resulting in low reliability of the interlocking function and difficulty in installation and commissioning.
Design a mechanical interlocking mechanism of CB-level left-right medium-voltage dual power cabinet. By setting up a spindle swing arm and tripping rod assembly in the medium-voltage dual power cabinet, the sliding connection between the guide cover and the shaft is realized. The interlock of the pressure switch has a compact structure, few parts, simple installation and small operating resistance.
It improves the reliability of mechanical interlocking, simplifies the installation and commissioning process, saves time and costs, and achieves more accurate operating position and high reliability.
Smart Images
Figure CN222320022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical interlocking of dual power cabinets, in particular to a mechanical interlocking mechanism of a CB-level left-right arranged medium-voltage dual power cabinet. Background Art
[0002] The mechanical interlocking devices of the existing CB-class medium-voltage dual power supply cabinets are mostly set outside the cabinet. Because this technology of setting outside the cabinet is mostly flexible interlocking, or rigid interlocking, it is affected by the long dimension chain, etc., resulting in low reliability of the interlocking function, and there are certain difficulties in installation and debugging. Utility Model Content
[0003] In order to solve the above problems, the purpose of the utility model is to provide a mechanical interlocking mechanism for a CB-level left-right arranged medium-voltage dual power cabinet, which has high reliability and is easy to install and debug.
[0004] The purpose of the utility model is achieved through the following technical solutions:
[0005] A mechanical interlocking mechanism for a CB-level left-right arranged medium-voltage dual power cabinet comprises a mechanical interlocking device for realizing the interlocking of two medium-voltage switches, wherein the two medium-voltage switches are placed one on the left and one on the right in the medium-voltage dual power cabinet and are in the same horizontal plane, one of the two medium-voltage switches is a trolley-type medium-voltage switch 1 with a main shaft swing arm 1 and a trip rod assembly 1 arranged on the left side, and the other is a trolley-type medium-voltage switch 2 with a main shaft swing arm 2 and a trip rod assembly 2 arranged on the right side; the mechanical interlocking device is installed in the medium-voltage dual power cabinet and is located between the two medium-voltage switches, the main shaft swing arm 1 is linked to the trip rod assembly 2 through the mechanical interlocking device, and the main shaft swing arm 2 is linked to the trip rod assembly 1 through the mechanical interlocking device.
[0006] Furthermore, the mechanical interlocking device includes a right pressure plate, a left pressure plate, a guide cover, shaft one, shaft two, a lower pressure plate one and a lower pressure plate two; the guide cover is installed in a medium-voltage dual power supply cabinet and is located between two medium-voltage switches, and two guide holes are vertically provided on the guide cover and pass through the upper and lower surfaces of the guide cover; the shaft is set in one of the guide holes of the guide cover and can slide up and down in the guide hole; the shaft two is set in the other guide hole of the guide cover and can slide up and down in the guide hole; one end of the right pressure plate is detachably connected to the trip rod assembly one, and the other end is connected to the upper end of the shaft two; one end of the left pressure plate is detachably connected to the trip rod assembly two, and the other end is connected to the upper end of the shaft one; one end of the lower pressure plate one is detachably connected to the main shaft swing arm one, and the other end is connected to the lower end of the shaft one; one end of the lower pressure plate two is detachably connected to the main shaft swing arm two, and the other end is connected to the lower end of the shaft two.
[0007] Furthermore, the right pressure plate and the trip rod assembly 1, the left pressure plate and the trip rod assembly 2, the lower pressure plate 1 and the main shaft swing arm 1, and the lower pressure plate 2 and the main shaft swing arm 2 are all detachably connected by overlapping.
[0008] Furthermore, when the trolley-type medium-voltage switch 1 and the trolley-type medium-voltage switch 2 are inserted into the medium-voltage dual power supply cabinet, the upper edge of the main shaft swing arm 1 overlaps the lower edge of one end of the lower pressure plate 1, and the lower edge of the swing arm of the trip rod assembly 1 overlaps the upper edge of one end of the right pressure plate; the upper edge of the main shaft swing arm 2 overlaps the lower edge of one end of the lower pressure plate 2, and the lower edge of the swing arm of the trip rod assembly 2 overlaps the upper edge of one end of the left pressure plate.
[0009] Furthermore, the guide hole is a hole with a square cross section, and correspondingly, the first axis and the second axis are also shaft rods with a square cross section.
[0010] Furthermore, the right pressure plate and the second shaft, the left pressure plate and the first shaft, the lower pressure plate and the first shaft, and the lower pressure plate and the second shaft are connected by screws respectively.
[0011] Furthermore, the two guide holes of the guide cover are respectively located on the left and right sides of the guide cover, wherein the first shaft set is arranged in the guide hole on the left side of the guide cover, and the second shaft set is arranged in the guide hole on the right side of the guide cover.
[0012] The mechanical interlocking mechanism of the CB-level left-right arranged medium-voltage dual power supply cabinet of the utility model is arranged inside the cabinet, and can meet the requirements of automatic conversion and simultaneous disconnection of dual power supplies. It has the characteristics of compact structure, small number of parts, simple installation, light weight, small running resistance, more accurate action position, high reliability, and can save installation and debugging time to a greater extent, and also greatly reduce material and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described in detail below with reference to the accompanying drawings.
[0014] Figure 1 The three-dimensional mechanical interlocking mechanism of the utility model Figure 1 ;
[0015] Figure 2 The three-dimensional mechanical interlocking mechanism of the utility model Figure 2 ;
[0016] Figure 3 This is a schematic diagram of the structure of the mechanical interlocking device of the utility model;
[0017] Figure 4 This is an exploded structural diagram of the mechanical interlocking device of the utility model;
[0018] As shown in the figure: 1- trolley type medium voltage switch 1, 101- spindle swing arm 1, 102- trip rod assembly 1, 2- trolley type medium voltage switch 2, 201- spindle swing arm 2, 202- trip rod assembly 2, 3- mechanical interlocking device, 301- screws, 302- right pressure plate, 303- left pressure plate, 304- guide cover, 305- shaft 1, 306- shaft 2, 307- lower pressure plate 1, 308- lower pressure plate 2. DETAILED DESCRIPTION
[0019] The following is an explanation of the implementation of the present invention by specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0020] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example
[0022] like Figure 1-4 As shown, this embodiment provides a mechanical interlocking mechanism for a CB-level left-right arranged medium-voltage dual power cabinet, including two medium-voltage switches and a mechanical interlocking device 3 for realizing interlocking of the two medium-voltage switches.
[0023] The two medium-voltage switches are placed one on the left and one on the right in the medium-voltage dual power supply cabinet and are in the same horizontal plane. One of the two medium-voltage switches is a trolley-type medium-voltage switch 1 with a main shaft swing arm 101 and a trip rod assembly 102 on the left side, and the other is a trolley-type medium-voltage switch 2 with a main shaft swing arm 201 and a trip rod assembly 202 on the right side.
[0024] The switch body of the trolley-type medium-voltage switch-1 is equipped with a main shaft swing arm-101 and a trip rod assembly-102. The main shaft swing arm-101 is connected to the main shaft of the trolley-type medium-voltage switch-1 and rotates with the main shaft opening and closing. The trip rod assembly-102 is arranged at the top position of the trolley-type medium-voltage switch-1. The rotation of the trip rod assembly-102 can drive the ejector pin that prevents the trolley-type medium-voltage switch-1 from closing to move back and forth in the vertical direction. The main shaft swing arm-101 and the swing arm of the trip rod assembly-102 of the trolley-type medium-voltage switch-1 are horizontally inward (right) in a free state, so that the switch can overlap with the mechanical interlocking device during the insertion process of the cabinet.
[0025] The switch body of the trolley-type medium-voltage switch 2 is equipped with a main shaft swing arm 201 and a trip rod assembly 202. The main shaft swing arm 201 is connected to the main shaft of the trolley-type medium-voltage switch 2, and rotates with the main shaft opening and closing. The trip rod assembly 202 is set at the top position of the trolley-type medium-voltage switch 2. The rotation of the trip rod assembly 202 can drive the ejector pin that prevents the trolley-type medium-voltage switch 2 from closing to move back and forth in the vertical direction. The main shaft swing arm 201 and the swing arm of the trip rod assembly 202 of the trolley-type medium-voltage switch 2 are also horizontally inward (left) in a free state, so that the switch can overlap with the mechanical interlocking device during the insertion process of the cabinet.
[0026] The mechanical interlocking device 3 is installed in the medium voltage dual power cabinet and is located between two medium voltage switches. The main shaft swing arm 101 is linked with the trip rod assembly 202 through the mechanical interlocking device 3, and the main shaft swing arm 201 is linked with the trip rod assembly 102 through the mechanical interlocking device 3. The mechanical interlocking device 3 includes a right pressure plate 302, a left pressure plate 303, a guide cover 304, a shaft 1 305, a shaft 2 306, a lower pressure plate 1 307 and a lower pressure plate 2 308.
[0027] The guide cover 304 is installed in the medium voltage dual power cabinet and is located between two medium voltage switches. Two guide holes are vertically arranged on the guide cover 304, which penetrate the upper and lower surfaces of the guide cover 304. The two guide holes are respectively located on the left and right sides of the guide cover 304. The guide cover 304 is obtained by fixing two square tubes together, and each square tube is provided with a guide hole. The guide hole is a hole with a square cross section.
[0028] The shaft 1 305 is sleeved in the guide hole on the left side of the guide cover 304 and can slide up and down in the guide hole along the vertical direction. The shaft 1 305 is a shaft rod with a square cross section and slidingly matched with the guide hole.
[0029] The second shaft 306 is sleeved in the guide hole on the right side of the guide cover 304 and can slide up and down in the guide hole along the vertical direction. The second shaft 306 is a shaft rod with a square cross section and slidingly matched with the guide hole.
[0030] The right pressure plate 302 is in an inverted L shape, and the upper edge of the right end of the horizontal section of the right pressure plate 302 is detachably connected to the lower edge of the swing arm of the trip rod assembly 102 by overlapping, and the lower end of the vertical section of the right pressure plate 302 is connected to the upper end of the second shaft 306 by two screws 301.
[0031] The left pressure plate 303 is also in an inverted L shape. The upper edge of the left end of the horizontal section of the left pressure plate 303 and the lower edge of the swing arm of the trip rod assembly 202 are detachably connected by overlapping. The lower end of the vertical section of the left pressure plate 303 is connected to the upper end of the shaft 1 305 by two screws.
[0032] The lower pressure plate 307 is in an L-shaped structure, and the lower edge of the right end of the horizontal section of the lower pressure plate 307 is detachably connected to the upper edge of the main shaft swing arm 101 by overlapping, and the upper end of the vertical section of the lower pressure plate 307 is connected to the lower end of the shaft 305 by two screws 301.
[0033] The lower pressure plate 2 308 also has an L-shaped structure. The lower edge of the left end of the horizontal section of the lower pressure plate 2 308 and the upper edge of the main shaft swing arm 201 are detachably connected by overlapping. The upper end of the vertical section of the lower pressure plate 2 308 and the lower end of the shaft 2 306 are connected by two screws 301.
[0034] After the trolley-type medium-voltage switch 1 (1) and trolley-type medium-voltage switch 2 (2) are inserted into the medium-voltage dual power supply cabinet:
[0035] The upper edge of the main shaft swing arm 101 is exactly overlapped with the lower edge of the right end of the horizontal section of the lower pressure plate 307, and the lower edge of the swing arm of the trip rod assembly 102 is exactly overlapped with the upper edge of the right end of the horizontal section of the right pressure plate 302; the rotation of the main shaft swing arm 101 of the trolley-type medium-voltage switch 1 drives the lower pressure plate 307, the shaft 305, and the left pressure plate 303 of the mechanical interlocking device 3 to move vertically upward, and the upward vertical movement of the left pressure plate 303 drives the swing arm of the trip rod assembly 202 on the trolley-type medium-voltage switch 2 to rotate, causing the anti-closing ejector pin in the trip rod assembly 202 to move vertically downward.
[0036] The upper edge of the main shaft swing arm 201 is exactly overlapped with the lower edge of the left end of the horizontal section of the lower pressure plate 2 308, and the lower edge of the swing arm of the tripping rod assembly 202 is exactly overlapped with the upper edge of the left end of the horizontal section of the left pressure plate 303. The rotation of the main shaft swing arm 201 of the trolley-type medium-voltage switch 2 drives the lower pressure plate 2 308, the shaft 306, and the right pressure plate 302 of the mechanical interlocking device 3 to move vertically upward, and the upward vertical movement of the right pressure plate 302 drives the swing arm of the tripping rod assembly 102 on the trolley-type medium-voltage switch 1 to rotate, causing the anti-closing ejector pin in the tripping rod assembly 102 to move vertically downward.
[0037] Working principle:
[0038] When the trolley-type medium-voltage switch 1 is closed, its main shaft cantilever 101 will swing upward, pushing the lower pressure plate 1 307 to move upward, and the lower pressure plate 1 307 drives the left shaft 1 305 to move upward, and the shaft 1 305 drives the left pressure plate 303 to move upward, and then the left pressure plate 303 drives the swing arm of the trip rod assembly 202 on the trolley-type medium-voltage switch 2 to rotate, and the swing arm drives the anti-closing ejector pin in the trip rod assembly 202 to move vertically downward, so that the trolley-type medium-voltage switch 2 cannot be closed; similarly When the trolley-type medium-voltage switch 2 is closed, its main shaft cantilever 201 will swing upward, pushing the lower pressure plate 2 308 to move upward, and the lower pressure plate 2 308 drives the right shaft 2 306 to move upward, and the shaft 2 306 drives the right pressure plate 302 to move upward, and then the right pressure plate 302 drives the swing arm of the trip rod assembly 102 on the trolley-type medium-voltage switch 1 to rotate, and the swing arm drives the anti-closing ejector pin in the trip rod assembly 102 to move vertically downward, so that the trolley-type medium-voltage switch 1 cannot be closed. Thus, the following switch states are realized:
[0039]
[0040] Note: I is a trolley-type medium-voltage switch, II is a trolley-type medium-voltage switch, √-switch closed, ×-switch open.
[0041] Other details of the present invention are all conventional techniques known to those skilled in the art.
[0042] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.
[0043] The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.
Claims
1. A mechanical interlocking mechanism for a CB-class left-right arranged medium-voltage dual power cabinet, comprising a mechanical interlocking device (3) for realizing interlocking of two medium-voltage switches, wherein the two medium-voltage switches are placed in the medium-voltage dual power cabinet, one on the left and one on the right, and are located in the same horizontal plane, one of the two medium-voltage switches is a trolley-type medium-voltage switch (1) with a main shaft swing arm (101) and a trip rod assembly (102) provided on the left, and the other is a trolley-type medium-voltage switch (2) with a main shaft swing arm (201) and a trip rod assembly (202) provided on the right; characterized in that: The mechanical interlocking device (3) is installed in a medium-voltage dual power supply cabinet and is located between two medium-voltage switches. The main shaft swing arm 1 (101) is linked to the trip rod assembly 2 (202) through the mechanical interlocking device (3), and the main shaft swing arm 2 (201) is linked to the trip rod assembly 1 (102) through the mechanical interlocking device (3).
2. The mechanical interlocking mechanism according to claim 1, characterized in that: The mechanical interlocking device (3) comprises a right pressing plate (302), a left pressing plate (303), a guide cover (304), a shaft one (305), a shaft two (306), a lower pressing plate one (307) and a lower pressing plate two (308); The guide cover (304) is installed in the medium-voltage dual power supply cabinet and is located between two medium-voltage switches. Two guide holes penetrating the upper and lower surfaces of the guide cover (304) are vertically arranged on the guide cover (304); The shaft 1 (305) is sleeved in one of the guide holes of the guide cover (304) and can slide up and down in the guide hole; The second shaft (306) is sleeved in another guide hole of the guide cover (304) and can slide up and down in the guide hole; One end of the right pressure plate (302) is detachably connected to the trip rod assembly (102), and the other end is connected to the upper end of the second shaft (306); One end of the left pressure plate (303) is detachably connected to the second tripping rod assembly (202), and the other end is connected to the upper end of the first shaft (305); One end of the lower pressure plate 1 (307) is detachably connected to the main shaft swing arm 1 (101), and the other end is connected to the lower end of the shaft 1 (305); One end of the second lower pressure plate (308) is detachably connected to the second main shaft swing arm (201), and the other end is connected to the lower end of the second shaft (306).
3. The mechanical interlocking mechanism according to claim 2, characterized in that: The right pressure plate (302) and the tripping rod assembly 1 (102), the left pressure plate (303) and the tripping rod assembly 2 (202), the lower pressure plate 1 (307) and the main shaft swing arm 1 (101), and the lower pressure plate 2 (308) and the main shaft swing arm 2 (201) are all detachably connected by overlapping.
4. The mechanical interlocking mechanism according to claim 3, characterized in that: After the trolley-type medium-voltage switch 1 (1) and trolley-type medium-voltage switch 2 (2) are inserted into the medium-voltage dual power supply cabinet, The upper edge of the main shaft swing arm (101) is exactly overlapped with the lower edge of one end of the lower pressure plate (307), and the lower edge of the swing arm of the trip rod assembly (102) is exactly overlapped with the upper edge of one end of the right pressure plate (302); The upper edge of the second main shaft swing arm (201) is exactly overlapped with the lower edge of one end of the second lower pressure plate (308), and the lower edge of the swing arm of the second release rod assembly (202) is exactly overlapped with the upper edge of one end of the left pressure plate (303).
5. The mechanical interlocking mechanism according to claim 2, characterized in that: The guide hole is a hole with a square cross section, and correspondingly, the first axis (305) and the second axis (306) are also shaft rods with a square cross section.
6. The mechanical interlocking mechanism according to claim 2, characterized in that: The right pressing plate (302) and the second shaft (306), the left pressing plate (303) and the first shaft (305), the lower pressing plate (307) and the first shaft (305), and the lower pressing plate (308) and the second shaft (306) are connected respectively by screws (301).
7. The mechanical interlocking mechanism according to claim 2, characterized in that: The two guide holes of the guide cover are respectively located on the left and right sides of the guide cover (304), wherein the first shaft (305) is sleeved in the guide hole on the left side of the guide cover (304), and the second shaft (306) is sleeved in the guide hole on the right side of the guide cover (304).