Automatic isolating device for isolating switch

Abstract

The present invention discloses an automatic isolating device for isolating switches, and relates to the technical field of isolating switches, including a device body, wherein the device body includes an operating shaft, a crank arm, a connecting rod, a movable hinge, an insulating partition, a fulcrum hinge, and a limit bracket. The operating shaft is hexagonal, and one end of the operating shaft is connected to a bevel gear. One end of the crank arm is a hexagonal hole, and the other end of the crank arm is welded with a first shaft pin. Two M5 threaded holes are arranged on both sides of the hexagonal hole. One side of the operating shaft passes through the hexagonal hole and is fixedly connected to the crank arm through the two M5 threaded holes; the lower end of the connecting rod is a first through hole. The present invention can achieve the real separation of the dynamic and static blades of the isolating switch by only a few simple parts, eliminates the hidden dangers of the product, improves the safety performance of the equipment, thereby ensuring the reliability of personnel safety during equipment maintenance, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the technical field of isolating switches, and in particular to an automatic isolating device for isolating switches. Background Art

[0002] Isolating switch is a kind of high-voltage switch. Because it does not have a special arc extinguishing device, it cannot cut off the load current and short-circuit current. It is generally used in conjunction with a circuit breaker. Its function is to reliably isolate the electrical equipment to be repaired from the live part of the power grid, so that there is an obvious disconnection point between the electrical equipment to be repaired and the power supply. At this time, although the power supply is disconnected, the moving and static blades are only disconnected and not really separated. The maintenance personnel may touch the live part and cause an accident. For this reason, we have designed an isolating switch automatic isolation device to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings in the prior art and to propose an automatic isolating device for an isolating switch.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An automatic isolating device for an isolating switch comprises a device body, wherein the device body comprises an operating shaft, a crank arm, a connecting rod, a movable hinge, an insulating partition, a fulcrum hinge, and a limit bracket, wherein the operating shaft is hexagonal, one end of the operating shaft is connected to a bevel gear, one end of the crank arm is a hexagonal hole, the other end of the crank arm is welded with a first shaft pin, two M5 threaded holes are arranged on both sides of the hexagonal hole, one side of the operating shaft passes through the hexagonal hole, and is fixedly connected to the crank arm through the two M5 threaded holes;

[0006] The lower end of the connecting rod is a first through hole, and the first through hole is connected to the first axle pin on the crank arm, the upper end of the connecting rod is welded with a second axle pin, the connecting rod is connected to the movable hinge through the second axle pin, the two ends of the movable hinge are first round sleeves, and the middle is a stepped third axle pin, a first steel plate is welded to one side of the third axle pin, a second through hole is opened below the first steel plate, and the second through hole is connected to the second axle pin on the connecting rod;

[0007] The insulating partition has an "L"-shaped structure, one end of the insulating partition is connected to a movable hinge, the other end of the insulating partition is connected to a fulcrum hinge, one end of the fulcrum hinge is installed on the edge of the insulating partition, the other end of the fulcrum hinge is connected to a cabinet body, the limit bracket has an "L"-shaped structure, the limit bracket is arranged below the insulating partition, and one end of the limit bracket is connected to the cabinet body.

[0008] Preferably, the outer diameters of both ends of the third shaft pin are slightly smaller than the inner diameter of the first circular sleeve, and the third shaft pin is tightly matched with the first circular sleeve.

[0009] Preferably, a first circular sleeve is installed on the long side edge of the insulating partition and is provided with three grooves, and a fulcrum hinge is installed at the corner of the L"-shaped structure of the insulating partition.

[0010] Preferably, one end of the fulcrum hinge is a second circular sleeve, and the other end of the fulcrum hinge is a fourth axial pin, the outer diameter of one end of the fourth axial pin is slightly smaller than the inner diameter of the second circular sleeve, the outer diameter of the other end of the fourth axial pin is consistent with the outer diameter of the second circular sleeve, and an "L"-shaped second steel plate is welded on the other side of the fourth axial pin, and a third through hole is opened on the second steel plate to connect to a frame.

[0011] Preferably, a fourth through hole is formed at one end of the limiting bracket and is connected to the frame.

[0012] Preferably, one end of the operating shaft away from the bevel gear is connected to a handle.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present invention, when operating the disconnector to open, the operating handle is rotated counterclockwise, and the crank arm is also rotated downward and drives the connecting rod, and the insulating partition is flipped downward by the movable hinge under the action of the fulcrum hinge. After the disconnection is in place, the insulating partition is in a horizontal position and overlaps with the limit bracket, dividing the upper static knife and the moving knife of the disconnector into upper and lower parts, thereby truly playing an isolating role;

[0014] This invention can realize the opening and isolating functions of the isolating switch simultaneously only by rotating the operating shaft, and the operation is the same as before; only a few simple parts can be used to truly separate the moving and static blades of the isolating switch, eliminating the hidden dangers of the product, improving the safety performance of the equipment, thereby ensuring the reliability of personnel safety during equipment maintenance, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of an automatic isolating device for an isolating switch proposed by the present invention;

[0016] Figure 2 This is a structural schematic diagram of an automatic isolating device for an isolating switch proposed by the present invention;

[0017] Figure 3 A schematic diagram of the structure of a crank arm of an automatic isolating device for an isolating switch proposed by the present invention;

[0018] Figure 4 A schematic structural diagram of a connecting rod of an automatic isolating device for an isolating switch proposed by the present invention;

[0019] Figure 5 A schematic structural diagram of a movable hinge of an automatic isolating device for an isolating switch proposed by the present invention;

[0020] Figure 6 A schematic diagram of the structure of an insulating partition of an automatic isolating device for an isolating switch proposed by the present invention;

[0021] Figure 7 The present invention provides a schematic structural diagram of a fulcrum hinge of an automatic isolating device for an isolating switch.

[0022] In the figure: 1 operating shaft, 2 crank arm, 201 hexagonal hole, 202 threaded hole, 203 first axis pin, 3 connecting rod, 301 first through hole, 302 second axis pin, 4 movable hinge, 401 first round sleeve, 402 third axis pin, 403 first steel plate, 5 insulating partition, 501 groove, 6 fulcrum hinge, 601 second round sleeve, 602 fourth axis pin, 603 second steel plate, 7 limiting bracket. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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, rather than all the embodiments.

[0024] Embodiment 1

[0025] Reference Figure 1-3 , an automatic isolation device for an isolating switch, comprising a device body, the device body comprising an operating shaft 1, a crank arm 2, a connecting rod 3, a movable hinge 4, an insulating partition 5, a fulcrum hinge 6, and a limit bracket 7, the operating shaft 1 is hexagonal, one end of the operating shaft 1 is connected to a bevel gear, and the end of the operating shaft 1 away from the bevel gear is connected with a handle, which is mainly used to operate the disconnector to close or open, one end of the crank arm 2 is a hexagonal hole 201, and the other end of the crank arm 2 is welded with a first shaft pin 203, two M5 threaded holes 202 are arranged on both sides of the hexagonal hole 201, one side of the operating shaft 1 passes through the hexagonal hole 201, and is fixedly connected to the crank arm 2 through the two M5 threaded holes 202;

[0026] Reference Figure 1 , Figure 4 and Figure 5 The lower end of the connecting rod 3 is a first through hole 301, and the first through hole 301 is connected to the first shaft pin 203 on the crank arm 2. The upper end of the connecting rod 3 is welded with a second shaft pin 302, and the connecting rod 3 is connected to the movable hinge 4 through the second shaft pin 302. The two ends of the movable hinge 4 are first circular sleeves 401, and the middle is a stepped third shaft pin 402. The outer diameters of the two ends of the third shaft pin 402 are slightly smaller than the inner diameter of the first circular sleeve 401, and can be closely matched with the first circular sleeve 401. A first steel plate 403 is welded to one side of the third shaft pin 402, and a second through hole is opened below the first steel plate 403. The second through hole is connected to the second shaft pin 302 on the connecting rod 3;

[0027] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 The insulating partition 5 is in an "L"-shaped structure. One end of the insulating partition 5 is connected to the movable hinge 4, and the other end of the insulating partition 5 is connected to the fulcrum hinge 6, which is used to isolate the moving and static contacts of the isolating switch. The first round sleeve 401 is installed on the edge of the long side of the insulating partition 5, and three grooves 501 are opened to avoid the static knife of the isolating switch. The fulcrum hinge 6 is installed at the corner of the L"-shaped structure of the insulating partition 5. One end of the fulcrum hinge 6 is installed on the edge of the insulating partition 5, and the other end of the fulcrum hinge 6 is connected to the cabinet. The insulating partition acts as a fulcrum when rotating. One end of the fulcrum hinge 6 is a second round sleeve 601, and the other end of the fulcrum hinge 6 is a fourth shaft pin 60 2. The outer diameter of one end of the fourth shaft pin 602 is slightly smaller than the inner diameter of the second circular sleeve 601, and the outer diameter of the other end of the fourth shaft pin 602 is consistent with the outer diameter of the second circular sleeve 601. The other side of the fourth shaft pin 602 is welded with an "L"-shaped second steel plate 603, and a third through hole is provided on the second steel plate 603 to connect with a frame; the outer shape of the limit bracket 7 is an "L"-shaped structure, and the limit bracket 7 is arranged below the insulating partition 5. One end of the limit bracket 7 is connected to the cabinet, and acts as a fulcrum when the insulating partition 5 rotates; one end of the limit bracket 7 is provided with a fourth through hole connected to the frame, and the other end is placed on the insulating partition 5 when the isolating switch is opened, so as to play a supporting and limiting role.

[0028] It should be noted that when the disconnector is operated to open, the operating handle is turned counterclockwise, and the crank arm 2 also rotates downward and drives the connecting rod 3, and the insulating partition 5 is flipped downward by the movable hinge 4 under the action of the fulcrum hinge 6. After the disconnection is in place, the insulating partition 5 is in a horizontal position and overlaps with the limit bracket 7, dividing the upper static knife and the moving knife of the disconnector into two parts, which truly plays an isolating role.

[0029] With the above design, the disconnector can be opened and isolated simultaneously by rotating the operating shaft 1, and the operation is the same as before. Only a few simple parts are needed to truly separate the moving and static blades of the disconnector, eliminating the hidden dangers of the product, improving the safety performance of the equipment, and thus ensuring the reliability of personnel safety during equipment maintenance.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic isolating device for an isolating switch, comprising a device body, characterized in that: The device body comprises an operating shaft (1), a crank arm (2), a connecting rod (3), a movable hinge (4), an insulating partition (5), a fulcrum hinge (6), and a limit bracket (7); the operating shaft (1) is hexagonal, one end of the operating shaft (1) is connected to a bevel gear, one end of the crank arm (2) is a hexagonal hole (201), the other end of the crank arm (2) is welded with a first shaft pin (203), two M5 threaded holes (202) are arranged on both sides of the hexagonal hole (201), one side of the operating shaft (1) passes through the hexagonal hole (201), and is fixedly connected to the crank arm (2) through the two M5 threaded holes (202); The lower end of the connecting rod (3) is a first through hole (301), and the first through hole (301) is connected to the first shaft pin (203) on the crank arm (2); the upper end of the connecting rod (3) is welded with a second shaft pin (302), and the connecting rod (3) is connected to the movable hinge (4) through the second shaft pin (302); the two ends of the movable hinge (4) are first round sleeves (401), and the middle is a stepped third shaft pin (402); a first steel plate (403) is welded to one side of the third shaft pin (402); a second through hole is opened below the first steel plate (403), and the second through hole is connected to the second shaft pin (302) on the connecting rod (3); The insulating partition (5) is in an "L"-shaped structure, one end of the insulating partition (5) is connected to the movable hinge (4), the other end of the insulating partition (5) is connected to the fulcrum hinge (6), one end of the fulcrum hinge (6) is installed on the edge of the insulating partition (5), and the other end of the fulcrum hinge (6) is connected to the cabinet body, the outer shape of the limiting bracket (7) is in an "L"-shaped structure, the limiting bracket (7) is arranged below the insulating partition (5), and one end of the limiting bracket (7) is connected to the cabinet body; A first circular sleeve (401) is installed on the long side edge of the insulating partition (5) and is provided with three grooves (501). A fulcrum hinge (6) is installed at the corner of the "L"-shaped structure of the insulating partition (5).

2. The automatic isolating device for isolating switches according to claim 1, characterized in that: The outer diameters of both ends of the third shaft pin (402) are slightly smaller than the inner diameter of the first circular sleeve (401), and the third shaft pin (402) is tightly matched with the first circular sleeve (401).

3. The automatic isolating device for isolating switches according to claim 1, characterized in that: One end of the fulcrum hinge (6) is a second circular sleeve (601), and the other end of the fulcrum hinge (6) is a fourth shaft pin (602). The outer diameter of one end of the fourth shaft pin (602) is slightly smaller than the inner diameter of the second circular sleeve (601), and the outer diameter of the other end of the fourth shaft pin (602) is consistent with the outer diameter of the second circular sleeve (601). An "L" second steel plate (603) is welded on the other side of the fourth shaft pin (602), and a third through hole is provided on the second steel plate (603) to connect with a frame.

4. The automatic isolating device for isolating switches according to claim 3, characterized in that: One end of the limiting bracket (7) is provided with a fourth through hole connected to the frame.

5. The automatic isolating device for isolating switches according to claim 3, characterized in that: One end of the operating shaft (1) away from the bevel gear is connected to a handle.

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