An outdoor high-voltage vacuum load isolating switch

Abstract

The utility model discloses an outdoor high-voltage vacuum load isolating switch, which includes a base, a main shaft, and an insulating rod. The base is provided with a first insulating terminal and a second insulating terminal, an isolating knife is provided between the first insulating terminal and the second insulating terminal, the first insulating terminal and the main shaft are provided with a first hinge point, the isolating knife is provided with a second hinge point, the base is provided with a third hinge point, one end of the isolating knife is hinged to the first hinge point of the first insulating terminal, one end of the insulating rod is hinged to the second hinge point, and the other end is hinged to the first hinge point of the main shaft, and the main shaft is hinged to the third hinge point. The utility model ensures that the first hinge point, the second hinge point, and the third hinge point rotate smoothly and without jamming through rollers, and prevents external water vapor from corroding the rollers through a protective cover in conjunction with a first sealing ring and a second sealing ring, so that the product has the advantage of unobstructed transmission.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment of power grids, in particular to an outdoor high-voltage vacuum load isolating switch. Background Art

[0002] Outdoor high-voltage vacuum load isolating switch is used to break load current, transformer no-load current, cable charging current and close load current; it has functions such as breaking, isolating, connecting and switching; used in conjunction with fuses, it can replace circuit breakers as transformer protection components, and is particularly suitable for unmanned substations.

[0003] The existing outdoor high-voltage vacuum load isolating switch has serious main shaft corrosion and transmission difficulty during outdoor operation. The corrosion makes it difficult for the main shaft to rotate, and the transmission mechanism is partially stuck, which makes the separation of the moving and static contacts not smooth, resulting in the inability to quickly extinguish the arc at the moment of breaking, affecting the normal operation of other components. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below was produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional outdoor high-voltage vacuum load isolating switch design and provide a product with unimpeded transmission.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] An outdoor high-voltage vacuum load isolating switch comprises a base, a main shaft, and an insulating rod. The base is provided with a first insulating terminal and a second insulating terminal. An isolating knife is provided between the first insulating terminal and the second insulating terminal. The first insulating terminal and the main shaft are provided with a first hinge point, the isolating knife is provided with a second hinge point, and the base is provided with a third hinge point. One end of the isolating knife is hinged to the first hinge point of the first insulating terminal, one end of the insulating rod is hinged to the second hinge point, and the other end is hinged to the first hinge point of the main shaft. The main shaft is hinged to the third hinge point. The first hinge point, the second hinge point, and the third hinge point are provided with bearing assemblies, and the bearing assemblies include rollers, protective covers, pins, and latches.

[0007] Preferably, the first hinge point is provided with a first through hole, and both ends of the first through hole are provided with first countersunk holes.

[0008] Preferably, blind holes are provided on both sides of the second hinge point, and end faces of the blind holes are provided with second countersunk holes.

[0009] Preferably, the third hinge point is provided with a second through hole, and two ends of the second through hole are provided with third countersunk holes.

[0010] Preferably, the inner walls of the first through hole, the second through hole and the blind hole are evenly distributed with a plurality of fixed through holes with the circle as the axis, and the first countersunk hole, the second countersunk hole and the third countersunk hole are evenly distributed with a plurality of threaded holes with the circle as the axis.

[0011] Preferably, the roller is provided with an avoidance through hole corresponding to the fixed through hole, the roller is arranged in the first through hole, the second through hole and the blind hole, and the latch is inserted in the fixed through hole and the avoidance through hole to fix the outer ring of the roller.

[0012] Preferably, the protective cover is arranged on the first countersunk hole, the second countersunk hole, and the third countersunk hole. The protective cover is provided with a third through hole. The pin shaft passes through the third through hole and the roller. A first sealing ring is provided between the protective cover and the first countersunk hole, the second countersunk hole, and the third countersunk hole. A second sealing ring is provided between the third through hole and the pin shaft. The protective cover is provided with a fixing ring, and the fixing ring is provided with a fixing hole corresponding to the threaded hole.

[0013] Preferably, the pin is connected and fixed to the main shaft by screws, the other end of the pin connected and fixed to the end of the main shaft is provided with a retaining ring and abuts against the protective cover, one end of the isolation knife is connected and fixed to the pin of the first hinge point, one end of the insulating rod is hinged to the pin of the second hinge point, and the other end is hinged to the pin of the first hinge point of the main shaft.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model ensures that the first hinge point, the second hinge point and the third hinge point rotate smoothly without jamming through the roller, and prevents external water vapor from eroding the roller through the protective cover in conjunction with the first sealing ring and the second sealing ring, thereby preventing the parts inside the roller from rusting and causing the risk of rotation jamming. The above design overcomes the problems raised by the background technology and ensures smooth transmission, so that the isolation knife can be quickly separated from the second insulating terminal, thereby quickly extinguishing the arc, ensuring the safety of surrounding parts, and giving the product the advantage of unobstructed transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an outdoor high-voltage vacuum load isolating switch of the utility model;

[0018] Figure 2 It is a schematic diagram of the side cross-section structure of a first hinge point of an outdoor high-voltage vacuum load isolating switch of the utility model;

[0019] Figure 3 For this utility model Figure 2 A partial structural enlarged view of detail A of an outdoor high-voltage vacuum load isolating switch;

[0020] Figure 4 It is a side cross-sectional structural diagram of a third hinge point of an outdoor high-voltage vacuum load isolating switch of the utility model;

[0021] Figure 5 For this utility model Figure 4 A partial structural enlarged view of detail B of an outdoor high-voltage vacuum load isolating switch;

[0022] Figure 6 It is a schematic diagram of the side cross-section structure of the second hinge point of an outdoor high-voltage vacuum load isolating switch of the utility model;

[0023] Figure 7 For this utility model Figure 6 A partial structural enlarged view of detail C of an outdoor high-voltage vacuum load isolating switch;

[0024] Figure 8 It is an exploded view of a bearing assembly of an outdoor high-voltage vacuum load isolating switch of the utility model;

[0025] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0026] Figure numerals: 1. base; 2. main shaft; 3. insulating rod; 4. isolating knife; 5. first hinge point; 6. bearing assembly; 7. fixing through hole; 8. threaded hole; 11. first insulating terminal; 12. second insulating terminal; 13. third hinge point; 14. second through hole; 15. third countersunk hole; 21. retaining ring; 41. second hinge point; 42. blind hole; 43. second countersunk hole; 51. first through hole; 52. first countersunk hole; 61. roller; 62. protective cover; 63. pin; 64. latch; 65. first sealing ring; 66. second sealing ring; 611. avoidance through hole; 621. third through hole; 622. fixing ring; 623. fixing hole. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference example Figures 1 to 8 , an outdoor high-voltage vacuum load isolating switch, comprising a base 1, a main shaft 2, and an insulating rod 3, the base 1 is provided with a first insulating terminal 11 and a second insulating terminal 12, an isolating knife 4 is provided between the first insulating terminal 11 and the second insulating terminal 12, the first insulating terminal 11 and the main shaft 2 are provided with a first hinge point 5, the isolating knife 4 is provided with a second hinge point 41, the base 1 is provided with a third hinge point 13, one end of the isolating knife 4 is hinged to the first hinge point 5 of the first insulating terminal 11, one end of the insulating rod 3 is hinged to the second hinge point 41, and the other end is hinged to the first hinge point 5 of the main shaft 2, the main shaft 2 is hinged to the third hinge point 13, the first hinge point 5, the second hinge point 41, and the third hinge point 13 are provided with a bearing assembly 6, the bearing assembly 6 includes a roller 61, a protective cover 62, a pin 63, and a latch 64;

[0030] It is worth mentioning that the first hinge point 5 is provided with a first through hole 51, and both ends of the first through hole 51 are provided with first countersunk holes 52. The first through hole 51 is convenient for accommodating the roller 61, and the first countersunk holes 52 are convenient for installing the protective cover 62.

[0031] It is worth mentioning that blind holes 42 are provided on both sides of the second hinge point 41, and the end surface of the blind hole 42 is provided with a second countersunk hole 43. The blind hole 42 is convenient for accommodating the roller 61, and the second countersunk hole 43 is convenient for installing the protective cover 62.

[0032] It is worth mentioning that the third hinge point 13 is provided with a second through hole 14, and both ends of the second through hole 14 are provided with third countersunk holes 15. The second through hole 14 is convenient for accommodating the roller 61, and the third countersunk holes 15 are convenient for installing the protective cover 62.

[0033] It is worth mentioning that the inner walls of the first through hole 51, the second through hole 14, and the blind hole 42 are evenly distributed with a plurality of fixed through holes 7 with the dot as the axis, and the first countersunk hole 52, the second countersunk hole 43, and the third countersunk hole 15 are evenly distributed with a plurality of threaded holes 8 with the dot as the axis, and the fixed through hole 7 provides a support point for the latch 64, and the threaded hole 8 is used in conjunction with the fixed hole 623;

[0034] It is worth mentioning that the roller 61 is provided with an avoidance through hole 611 corresponding to the fixed through hole 7, the roller 61 is arranged in the first through hole 51, the second through hole 14, and the blind hole 42, the latch 64 is inserted in the fixed through hole 7 and the avoidance through hole 611, and is used to fix the outer ring of the roller 61, the avoidance through hole 611 is used in conjunction with the latch 64, and the latch 64 prevents the outer ring of the roller 61 from rotating with the inner ring;

[0035] It is worth mentioning that the protective cover 62 is arranged in the first countersunk hole 52, the second countersunk hole 43, and the third countersunk hole 15, the protective cover 62 is provided with a third through hole 621, the pin 63 passes through the third through hole 621 and the roller 61, a first sealing ring 65 is provided between the protective cover 62 and the first countersunk hole 52, the second countersunk hole 43, and the third countersunk hole 15, a second sealing ring 66 is provided between the third through hole 621 and the pin 63, the protective cover 62 is provided with a fixing ring 622, and the fixing ring 622 is provided with a fixing hole 623 corresponding to the threaded hole 8, and the first through hole 621 is provided with a fixing hole 623 corresponding to the threaded hole 8. The three-way hole 621 is convenient for the pin 63 to pass through, and the first sealing ring 65 is used to improve the sealing of the connection between the protective cover 62 and the first countersunk hole 52, the second countersunk hole 43, and the third countersunk hole 15. The second sealing ring 66 is used to improve the sealing of the connection between the pin 63 and the third through hole 621 when rotating, so as to prevent the external water vapor from corroding the roller 61 and causing the risk of rotation jamming. Fasteners such as fixing screws and bolts can be placed at the fixing hole 623 to fix the protective cover 62 to the first countersunk hole 52, the second countersunk hole 43, and the third countersunk hole 15;

[0036] It is worth mentioning that the pin 63 is connected and fixed to the main shaft 2 by screws, and the other end of the pin 63 connected and fixed to the end of the main shaft 2 is provided with a retaining ring 21, and abuts the protective cover 62, one end of the isolation knife 4 is connected and fixed to the pin 63 of the first hinge point 5, one end of the insulating rod 3 is hinged to the pin 63 of the second hinge point 41, and the other end is hinged to the pin 63 of the first hinge point 5 of the main shaft 2. When the main shaft 2, the isolation knife 4, and the insulating rod 3 rotate, the pin 63 is driven to rotate, so that the roller 61 rotates, and the retaining ring 21 prevents the pin 63 connected to the end of the main shaft 2 from being separated from the protective cover 62, thereby preventing the entire main shaft 2 from being separated from the base 1.

[0037] The above design scheme can enable the product to achieve the advantage of unobstructed transmission.

[0038] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. An outdoor high-voltage vacuum load isolating switch, comprising a base (1), a main shaft (2), and an insulating rod (3), wherein the base (1) is provided with a first insulating terminal (11) and a second insulating terminal (12), an isolating knife (4) is provided between the first insulating terminal (11) and the second insulating terminal (12), the first insulating terminal (11) and the main shaft (2) are provided with a first hinge point (5), the isolating knife (4) is provided with a second hinge point (41), the base (1) is provided with a third hinge point (13), one end of the isolating knife (4) is hinged to the first hinge point (5) of the first insulating terminal (11), one end of the insulating rod (3) is hinged to the second hinge point (41), and the other end is hinged to the first hinge point (5) of the main shaft (2), and the main shaft (2) is hinged to the third hinge point (13), characterized in that: The first hinge point (5), the second hinge point (41) and the third hinge point (13) are provided with a bearing assembly (6), and the bearing assembly (6) comprises a roller (61), a protective cover (62), a pin shaft (63) and a latch pin (64).

2. The outdoor high-voltage vacuum load isolating switch according to claim 1, characterized in that: The first hinge point (5) is provided with a first through hole (51), and first countersunk holes (52) are provided at both ends of the first through hole (51).

3. The outdoor high-voltage vacuum load isolating switch according to claim 2, characterized in that: Blind holes (42) are provided on both sides of the second hinge point (41), and second countersunk holes (43) are provided on the end faces of the blind holes (42).

4. The outdoor high-voltage vacuum load isolating switch according to claim 3, characterized in that: The third hinge point (13) is provided with a second through hole (14), and two ends of the second through hole (14) are provided with third countersunk holes (15).

5. The outdoor high-voltage vacuum load isolating switch according to claim 4, characterized in that: The inner walls of the first through hole (51), the second through hole (14) and the blind hole (42) are evenly distributed with a plurality of fixing through holes (7) with the circle as the axis, and the first countersunk hole (52), the second countersunk hole (43) and the third countersunk hole (15) are evenly distributed with a plurality of threaded holes (8) with the circle as the axis.

6. The outdoor high-voltage vacuum load isolating switch according to claim 5, characterized in that: The roller (61) is provided with a position-avoiding through hole (611) corresponding to the fixing through hole (7); the roller (61) is arranged in the first through hole (51), the second through hole (14), and the blind hole (42); the latch (64) is inserted in the fixing through hole (7) and the position-avoiding through hole (611) to fix the outer ring of the roller (61).

7. The outdoor high-voltage vacuum load isolating switch according to claim 6, characterized in that: The protective cover (62) is arranged on the first countersunk hole (52), the second countersunk hole (43), and the third countersunk hole (15); the protective cover (62) is provided with a third through hole (621); the pin shaft (63) passes through the third through hole (621) and the roller (61); a first sealing ring (65) is provided between the protective cover (62) and the first countersunk hole (52), the second countersunk hole (43), and the third countersunk hole (15); a second sealing ring (66) is provided between the third through hole (621) and the pin shaft (63); the protective cover (62) is provided with a fixing ring (622); and the fixing ring (622) is provided with a fixing hole (623) corresponding to the threaded hole (8).

8. The outdoor high-voltage vacuum load isolating switch according to claim 7, characterized in that: The pin shaft (63) is connected and fixed to the main shaft (2) by means of screws; the other end of the pin shaft (63) connected and fixed to the end of the main shaft (2) is provided with a retaining ring (21) and abuts against the protective cover (62); one end of the isolation knife (4) is connected and fixed to the pin shaft (63) of the first hinge point (5); one end of the insulating rod (3) is hinged to the pin shaft (63) of the second hinge point (41), and the other end is hinged to the pin shaft (63) of the first hinge point (5) of the main shaft (2).

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