Movable isolating switch

Abstract

The utility model relates to the technical field of switches, and discloses a movable isolating switch, which comprises a base, an insulator, a moving contact, a disconnecting link, a static contact, an insulating arm and a slide rail, one end of the base is fixedly connected with a lubricating mechanism, the middle parts of the end surfaces of the two sides of the base are fixedly connected with fixing mechanisms, the lubricating mechanism comprises a connecting part, and the connecting part is fixedly connected with the insulating arm. Oil storage cavities are formed in the two sides of the upper end in the connecting part, and oil inlets are formed in the middles of the bottom faces of the oil storage cavities. According to the device, the rotating shaft is twisted to drive the second abutting joint to rotate, the first abutting joint is temporarily pushed to move upwards, the spring telescopic rod is shrunk, the piston slides upwards, the oil inlet is communicated with the oil outlet, and lubricating oil in the oil storage cavity drips into the bearing through the device. And after the second abutting head misses the first abutting head, the spring telescopic rod rebounds, the piston resets and is blocked, and lubrication is stopped. The piston lifting time is short, the lubricating oil amount is moderate, long-term lubrication is achieved, the service life of the bearing is prolonged, and practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of switch technology, and in particular to a mobile disconnect switch. Background Technology

[0002] Portable disconnect switches are flexible, installable, and removable electrical isolation devices used to create a visible break point during circuit maintenance, ensuring operational safety. Features include modular design, portability, and support for temporary wiring, making them suitable for substations, construction sites, and other locations requiring frequent power switching. They possess a visible disconnect point and mechanical interlocking function, but typically lack arc-extinguishing capability and must be used in conjunction with a circuit breaker. They comply with GB / T standards, ensuring reliable isolation of high-voltage lines and personnel protection.

[0003] Most mobile disconnect switches are typically exposed to outdoor environments. The bearings that assist the shaft in closing the knife switch are easily rusted if they are exposed to a humid environment for a long time without regular lubrication, which will affect the closing of the knife switch. In addition, most disconnect switches are flexible to move but do not have temporary fixed parts, which will affect the stability of maintenance and other related work, and thus affect the practicality of the device.

[0004] Therefore, those skilled in the art have provided a movable disconnect switch to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a mobile disconnect switch. The device opens and closes the knife switch by twisting a rotating shaft, which in turn rotates the second abutment fixedly connected to it. During rotation, the second abutment briefly presses against the first abutment upwards, causing the spring telescopic rod to retract and the piston to slide upwards. This reconnects the oil inlet and outlet, allowing lubricating oil in the oil reservoir to drip into the bearing location via the inlet and outlet. When the second abutment misses the first abutment, the spring telescopic rod rebounds, the piston re-blocks, and lubrication ends. Repeated lubrication can be achieved by twisting the rotating shaft left and right. Because the piston's upward movement is brief, the amount of lubricating oil flowing in is not excessive, facilitating long-term lubrication, extending bearing life, and improving the device's practicality.

[0006] To achieve the above objectives, this utility model provides a mobile disconnect switch, including a base, an insulator, a moving contact, a knife switch, a stationary contact, an insulating arm, and a slide rail. A lubrication mechanism is fixedly connected to one end of the base, and a fixing mechanism is fixedly connected to the middle of both ends of the base.

[0007] The lubrication mechanism includes a connecting part, with oil storage chambers on both sides of the upper end of the connecting part, an oil inlet in the middle of the bottom surface of the oil storage chamber, and two oil outlets in the middle of the connecting part. A spring telescopic rod is fixedly connected to the upper end of the connecting part, a first abutment is fixedly connected to the lower end of the spring telescopic rod, and pistons are fixedly connected to both sides of the lower end of the outer wall of the spring telescopic rod. A rotating shaft is rotatably connected to the lower end of the connecting part, a second abutment is fixedly connected to one side of the outer wall of the rotating shaft, and a bearing is fixedly connected to one end of the outer wall of the rotating shaft. The fixing mechanism includes two slides, with threaded rods rotatably connected to both ends of the slides. A slider is sleeved on the outer wall of the threaded rod, a clamp is hinged to the middle of the upper surface of the slider, and a fixing rod is fixedly connected to one end of the upper surface of the slide.

[0008] Through the above technical solution, the device opens and closes the knife gate by twisting the rotating shaft, which in turn causes the second abutment fixedly connected to it to rotate. When the second abutment rotates, it briefly abuts the first abutment upward. The upward movement of the first abutment causes the spring telescopic rod to retract, which in turn causes the piston to slide upward. The oil inlet and outlet are reconnected, and the lubricating oil in the oil storage chamber drips into the bearing location along the oil inlet and outlet. When the second abutment misses the first abutment, the spring telescopic rod rebounds, the piston re-blocks, and lubrication ends. The left and right twisting of the rotating shaft can perform repeated lubrication. Because the piston rise time is short, the inflow of lubricating oil will not be excessive, which is conducive to long-term lubrication, extends the bearing life, and improves the practicality of the device. The device causes the slider to slide towards one end of the slide block by twisting the threaded rod. During the sliding, the clamp above the slider tilts under the contact of the fixed rod until one side of the clamp is close to the end of the slide rail, completing the temporary fixation of the device, improving the working stability of the device, and thus improving the practicality of the device.

[0009] Furthermore, multiple insulators are provided on both sides of the upper surface of the base, half of which are fixedly connected to a moving contact at the upper end, and the two ends of the moving contact are rotatably connected to a knife switch; the other half of the insulators are fixedly connected to a stationary contact at the upper end.

[0010] Through the above technical solution, the insulator is used to isolate the current from the base to ensure safety, and the moving contact is energized by closing the knife switch to contact the stationary contact.

[0011] Furthermore, insulating arms are rotatably connected to both sides of the outer wall of the knife switch, and a slide rail is slidably connected to one side of the outer wall of the base;

[0012] Through the above technical solution, the rotating shaft drives the insulating arm to tilt at a certain angle, thereby lifting the knife switch to achieve opening and closing.

[0013] Furthermore, the oil outlet and the oil inlet are interconnected, and one side of the piston outer wall is slidably connected to one side of the outer wall at the junction of the oil outlet and the oil inlet.

[0014] Through the above technical solution, lubricating oil enters the bearing location through the oil inlet and oil outlet.

[0015] Furthermore, a bearing is fixedly connected to the lower end of the connecting part, and one side of the outer wall of the first abutment and one side of the inner wall of the connecting part form a sliding connection.

[0016] Through the above technical solution, the bearing makes the rotation of the shaft smoother, and the first abutment can move up and down more stably without shifting.

[0017] Furthermore, one end of the rotating shaft is rotatably connected to the middle of one side end face of the base;

[0018] Through the above technical solution, the rotating shaft can have a stable rotation fulcrum.

[0019] Furthermore, the lower end face of the slider forms a sliding connection with the bottom surface of the slide block;

[0020] With the above technical solution, the slider slides more stably and will not deviate from the predetermined sliding trajectory.

[0021] Furthermore, a handle is fixedly connected to one end of the threaded rod;

[0022] The above technical solution makes it more convenient to twist the threaded rod.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model proposes a mobile disconnect switch. The device opens and closes the knife switch by twisting the rotating shaft, which in turn causes the second abutment fixedly connected to it to rotate. When the second abutment rotates, it briefly abuts the first abutment upward. The upward movement of the first abutment causes the spring telescopic rod to retract, which in turn causes the piston to slide upward. The oil inlet and outlet are reconnected, and the lubricating oil in the oil storage chamber drips into the bearing location along the oil inlet and outlet. When the second abutment misses the first abutment, the spring telescopic rod rebounds, the piston re-blocks, and lubrication ends. The left and right twisting of the rotating shaft can perform repeated lubrication. Because the piston rise time is short, the amount of lubricating oil flowing in is not excessive, which facilitates long-term lubrication, extends the bearing life, and improves the practicality of the device.

[0025] 2. The present invention proposes a movable disconnect switch, in which the slider slides toward one end of the slide block by twisting the threaded rod. During the sliding, the clamp above the slider tilts under the contact of the fixing rod until one side of the clamp is in close contact with one end of the slide rail, thus temporarily fixing the device, improving the working stability of the device and thus improving the practicality of the device. Attached Figure Description

[0026] Figure 1 This is an isometric view of a movable disconnector according to the present invention.

[0027] Figure 2 This is a front view of a movable disconnector switch proposed in this utility model;

[0028] Figure 3 This is a cross-sectional view of the connecting part of a movable disconnector according to the present invention;

[0029] Figure 4 This is a front sectional view of the connection part of a movable disconnector proposed in this utility model;

[0030] Figure 5 for Figure 2 Enlarged view of point A.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Base; 2. Insulator; 3. Moving contact; 4. Knife switch; 5. Stationary contact; 6. Insulating arm; 7. Lubrication mechanism; 71. Connecting part; 72. Oil reservoir; 73. Oil inlet; 74. Oil outlet; 75. Spring telescopic rod; 76. First abutment joint; 77. Piston; 78. Rotating shaft; 79. Second abutment joint; 710. Bearing; 8. Fixing mechanism; 81. Slide block; 82. Threaded rod; 83. Handle; 84. Slider; 85. Clamping plate; 86. Fixing rod; 9. Slide rail. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figure 1-3 This utility model provides a specific implementation method:

[0035] A movable disconnector includes a base 1, an insulator 2, a moving contact 3, a knife switch 4, a stationary contact 5, an insulating arm 6, and a slide rail 9. A lubrication mechanism 7 is fixedly connected to one end of the base 1. Fixing mechanisms 8 are fixedly connected to the middle of both end faces of the base 1. The lubrication mechanism 7 includes a connecting part 71. Oil storage chambers 72 are formed on both sides of the upper end of the connecting part 71. An oil inlet 73 is formed in the middle of the bottom surface of each oil storage chamber 72. Two oil outlets 74 are formed in the middle of the connecting part 71. A spring telescopic rod 75 is fixedly connected to the upper end of the connecting part 71. The lower end of the spring telescopic rod 75 is fixedly connected to a first abutment 76. Pistons 77 are fixedly connected to both sides of the lower end of the outer wall of the spring telescopic rod 75. A rotating shaft 78 is rotatably connected to the lower end inside the connecting part 71. A second abutment 79 is fixedly connected to one side of the outer wall of the rotating shaft 78. A bearing 710 is fixedly connected to one end of the outer wall of the rotating shaft 78. The fixing mechanism 8 includes two slides 81. Threaded rods 82 are rotatably connected to both ends of the slides 81. A slider 84 is sleeved on the outer wall of the threaded rod 82. A clamping plate 85 is hinged to the middle of the upper surface of the slider 84. A fixed rod is fixedly connected to one end of the upper surface of the slide 81. The device opens and closes the knife gate 4 by twisting the rotating shaft 78, which in turn causes the second abutment 79 fixedly connected to it to rotate. During rotation, the second abutment 79 briefly presses against the first abutment 76 upwards. The upward movement of the first abutment 76 causes the spring telescopic rod 75 to retract, thereby causing the piston 77 to slide upwards. This reconnects the oil inlet 73 and the oil outlet 74, allowing the lubricating oil in the oil reservoir 72 to drip from the inlet 73 through the outlet 74 into the bearing 710. When the second abutment 79 misses the first abutment 79, the spring telescopic rod 75 rebounds, and the piston 77 resumes its upward movement. When the blockage occurs and lubrication ends, repeated lubrication can be performed by twisting the rotating shaft 78 left and right. Since the piston 77 is lifted for a short time, the amount of lubricating oil flowing in will not be excessive, which facilitates long-term lubrication, extends the life of the bearing 710, and improves the practicality of the device. The device causes the slider 84 to slide towards one end of the slide block 81 by twisting the threaded rod 82. When sliding, the clamp 85 above the slider 84 tilts under the contact of the fixed rod 86 until one side of the clamp 85 is tightly attached to one end of the slide rail 9 to temporarily fix the device, which improves the working stability of the device and thus improves the practicality of the device.

[0036] Reference Figure 3-5 Multiple insulators 2 are provided on both sides of the upper surface of the base 1. One half of the insulators 2 is fixedly connected to the upper end of a moving contact 3, and the two ends of the moving contact 3 are rotatably connected to a knife switch 4. The other half of the insulators 2 is fixedly connected to the upper end of a stationary contact 5. The insulators 2 are used to isolate the current from the base 1 to ensure safety. The moving contact 3 is energized by closing the knife switch 4 to contact the stationary contact 5.

[0037] Insulating arms 6 are rotatably connected to both sides of the outer wall of the knife switch 4, and slide rail 9 is slidably connected to one side of the outer wall of the base 1. The rotating shaft 78 drives the insulating arms 6 to tilt at a certain angle, thereby lifting the knife switch 4 to achieve opening and closing.

[0038] The oil outlet 74 and the oil inlet 73 are connected to each other. One side of the outer wall of the piston 77 is slidably connected to one side of the outer wall at the junction of the oil outlet 74 and the oil inlet 73. The lubricating oil enters the bearing 710 through the oil inlet 73 and the oil outlet 74.

[0039] A bearing 710 is fixedly connected to the lower end inside the connecting part 71. One side of the outer wall of the first abutment 76 is slidably connected to one side of the inner wall of the connecting part 71. The bearing 710 makes the rotation of the shaft 78 smoother, and the first abutment 76 can move up and down more stably without shifting.

[0040] One end of the rotating shaft 78 is rotatably connected to the middle of one side end face of the base 1, and the rotating shaft 78 can have a stable rotation fulcrum;

[0041] The lower end face of slider 84 forms a sliding connection with the bottom surface of slide block 81, making the sliding of slider 84 more stable and preventing it from deviating from the predetermined sliding trajectory.

[0042] A handle 83 is fixedly connected to one end of the threaded rod 82, making it more convenient to twist the threaded rod 82.

[0043] Working principle: The device opens and closes the knife gate 4 by twisting the rotating shaft 78, which in turn causes the second abutment 79 fixedly connected to it to rotate. When it rotates, it briefly abuts the first abutment 76 upward. The upward movement of the first abutment 76 causes the spring telescopic rod 75 to retract, which in turn causes the piston 77 to slide upward. The oil inlet 73 and the oil outlet 74 are reconnected, and the lubricating oil in the oil storage chamber 72 will drip into the bearing 710 through the oil inlet 73 and the oil outlet 74. When the second abutment 79 misses the first abutment 79, the spring telescopic rod 75 rebounds, the piston 77 is blocked again, and the lubrication ends. The left and right twisting of the rotating shaft 78 can perform repeated lubrication. Since the piston 77 is raised for a short time, the amount of lubricating oil flowing in will not be excessive, which is conducive to long-term lubrication. The device causes the slider 84 to slide towards one end of the slide block 81 by twisting the threaded rod 82. When sliding, the clamp 85 above the slider 84 tilts under the contact of the fixed rod 86 until one side of the clamp 85 is tightly pressed against one end of the slide rail 9, thus temporarily fixing the device.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mobile disconnect switch, comprising a base (1), an insulator (2), a moving contact (3), a knife switch (4), a stationary contact (5), an insulating arm (6), and a slide rail (9), characterized in that: A lubrication mechanism (7) is fixedly connected to one end of the base (1), and a fixing mechanism (8) is fixedly connected to the middle of both ends of the base (1). The lubrication mechanism (7) includes a connecting part (71). Oil storage chambers (72) are provided on both sides of the upper end of the connecting part (71). An oil inlet (73) is provided in the middle of the bottom surface of the oil storage chamber (72). Two oil outlets (74) are provided in the middle of the connecting part (71). A spring telescopic rod (75) is fixedly connected to the upper end of the connecting part (71). A first abutment joint (76) is fixedly connected to the lower end of the spring telescopic rod (75). Pistons (77) are fixedly connected to both sides of the lower end of the outer wall of the spring telescopic rod (75). The lower end of the interior of part (71) is rotatably connected to a rotating shaft (78). A second abutment (79) is fixedly connected to one side of the outer wall of the rotating shaft (78). A bearing (710) is fixedly connected to one end of the outer wall of the rotating shaft (78). The fixing mechanism (8) includes two slides (81). Threaded rods (82) are rotatably connected to both ends of the slides (81). A slider (84) is sleeved on the outer wall of the threaded rod (82). A clamp (85) is hinged to the middle of the upper surface of the slider (84). A fixing rod (86) is fixedly connected to one end of the upper surface of the slide (81).

2. A mobile disconnect switch according to claim 1, characterized in that: Multiple insulators (2) are provided on both sides of the upper surface of the base (1). Half of the insulators (2) are fixedly connected to a moving contact (3) at the upper end. Both ends of the moving contact (3) are rotatably connected to a knife switch (4). The other half of the insulators (2) are fixedly connected to a stationary contact (5).

3. A mobile disconnect switch according to claim 1, characterized in that: Insulating arms (6) are rotatably connected to both sides of the outer wall of the knife switch (4), and a slide rail (9) is slidably connected to one side of the outer wall of the base (1).

4. A mobile disconnect switch according to claim 1, characterized in that: The oil outlet (74) and the oil inlet (73) are connected to each other, and one side of the outer wall of the piston (77) is slidably connected to one side of the outer wall at the junction of the oil outlet (74) and the oil inlet (73).

5. A mobile disconnect switch according to claim 1, characterized in that: The lower end of the connecting part (71) is fixedly connected to a bearing (710), and one side of the outer wall of the first abutment (76) and one side of the inner wall of the connecting part (71) are slidably connected.

6. A mobile disconnect switch according to claim 1, characterized in that: One end of the rotating shaft (78) is rotatably connected to the middle of one side end face of the base (1).

7. A mobile disconnect switch according to claim 1, characterized in that: The lower end face of the slider (84) is slidably connected to the bottom surface of the slide block (81).

8. A mobile disconnect switch according to claim 1, characterized in that: A handle (83) is fixedly connected to one end of the threaded rod (82).

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