Isolating switch safety manual operation device

Abstract

The utility model discloses a safe manual operation device for an isolating switch, and relates to the technical field of isolating switches. A groove hole is formed in one end of the pressing head, a connecting rod is movably connected to the interior of the pressing head, a second telescopic spring is fixedly connected to the bottom of the pressing head, and a clamping groove is formed in the surface of the pressing column; a pressing head descends to drive a clamping block fixedly connected with the bottom of a connecting rod to slide in a clamping groove, and during sliding, due to the length difference between the bottoms of the clamping groove, a pressing column downwards extrudes a crank arm under the action of the elastic force of a second telescopic spring; the movable contact fixedly connected with the bottom of the crank arm connected with the power supply is separated from the internal disconnection circuit of the static contact, the power supply can be connected only by pressing the same end for the second time, and it is guaranteed that electric power workers for maintenance and construction cannot directly connect the power supply due to misoperation when the circuit is disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a safe manual operating device for isolating switches. Background Art

[0002] An isolating switch is a switching device that, when in the open position, has an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when in the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. During the operation and equipment maintenance of existing isolating switches, operational errors are not allowed when the grounding knife switch is grounded or not. If the operation is wrong, it will cause major safety accidents, which is one of the causes of major accidents in the power system. However, most isolating switches do not have safety protection structures, which pose a great threat to the personal safety of power workers involved in maintenance and construction. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a safe manual operating device for an isolating switch, which solves the problem that operating errors are not allowed when the grounding knife switch is grounded or not grounded. If the operation is wrong, it will cause a major accident, which is one of the causes of major accidents in the power system. However, most isolating switches do not have a safety protection structure, which poses a great threat to the personal safety of power workers involved in maintenance and construction.

[0004] To achieve the above purpose, the utility model is implemented by the following technical scheme: a safe manual operation device for an isolating switch. It includes a housing component, an anti-mistaken touch component is arranged inside the housing component, the anti-mistaken touch component includes a pressing head and a fixed block, an upper fixed plate is protruded outwardly around the pressing head, a telescopic spring is fixedly connected to the bottom of the upper fixed plate, a slot is provided at one end of the pressing head and a connecting rod is movably connected inside, a second telescopic spring is fixedly connected to the bottom of the pressing head, a pressing column is fixedly connected to the bottom of the second telescopic spring, a slot is provided on the surface of the pressing column, the interior of the fixed block is hollow and a third telescopic spring is fixedly connected to the top, a telescopic column is fixedly connected to the bottom of the third telescopic spring, support plates extend downwardly from both ends of the fixed block, a connecting shaft is arranged at the bottom of the support plate, a steering plate is rotatably connected to the outside of the connecting shaft, crank arms extend from both ends of the steering plate, and a moving contact is fixedly connected to the bottom of the crank arm.

[0005] Preferably, the housing assembly comprises a switch housing, a fixing plate is protruded from the top of the switch housing, and a static contact is fixedly connected to the bottom of the inner cavity of the switch housing.

[0006] Preferably, the top of the telescopic spring is fixedly connected to the bottom of the upper fixed plate, and the bottom of the telescopic spring is fixedly connected to the top of the fixed plate.

[0007] Preferably, the fixing block is fixedly connected to the top of the inner cavity of the switch housing.

[0008] Preferably, a block is protruded from the bottom of the connecting rod, and the block is slidably connected inside the card slot.

[0009] Preferably, the top of the steering plate is conical, and the steering plate fits on the bottom of the telescopic column.

[0010] Preferably, the middle portion of the slot is raised and both ends are inclined downward.

[0011] The utility model provides a safe manual operating device for an isolating switch. Compared with the prior art, it has the following beneficial effects:

[0012] 1. A safe manual operating device for an isolating switch, by pressing the pressing head, when the moving contact fixedly connected to the bottom of the crank arm is clamped in the interior of the static contact to connect the power supply, the pressing column arranged on the top of the other end of the crank arm is squeezed on the top of the crank arm, and the descending of the pressing head drives the clamping block fixedly connected to the bottom of the connecting rod to slide in the interior of the clamping slot and slide from the bottom of the clamping slot to the top. During sliding, due to the length difference between the bottom and the bottom of the clamping slot, when the clamping block is clamped on the top of the clamping slot, the pressing column presses the crank arm downward under the elastic force of the second telescopic spring, so that the moving contact fixedly connected to the bottom of the crank arm at one end connected to the power supply is separated from the internal disconnection circuit of the static contact. When pressing the pressing head at one end of the connected circuit, no change of the circuit is caused. When the other end of the disconnected or connected power supply is in an ascending state, the pressing head at the disconnected or connected end can be pressed down to continue the operation to connect the power supply, thereby ensuring that the power workers who are engaged in maintenance and construction will not directly connect the power supply due to operating errors when the circuit is disconnected.

[0013] 2. A safe manual operating device for an isolating switch, by pressing one end of a crank arm, since the top of a steering plate is conical, when one end of the crank arm is pressed, the top of the steering plate abuts against the bottom of a telescopic column, and the squeezed telescopic column retracts into the interior of a fixed block under the contraction action of an internal third telescopic spring, so that the steering plate rotates under the fixing action of a connecting shaft until a moving contact fixedly connected to the bottom of the other end of the crank arm is engaged with the interior of a static contact, thereby preventing the pressing head at one end of a closed circuit from being separated from the interior of the static contact when the crank arm is not under force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the anti-mistouch component of the utility model.

[0017] Figure 4 This is a detailed diagram of the anti-mistouch component of the utility model.

[0018] In the figure: 1. Shell assembly; 2. Anti-accidental touch assembly; 11. Switch housing; 12. Fixed plate; 13. Static contact; 21. Pressing head; 22. Telescopic spring; 23. Connecting rod; 24. Upper fixed plate; 25. Second telescopic spring; 26. Pressing column; 27. Slot; 28. Block; 29. ​​Fixed block; 210. Third telescopic spring; 211. Telescopic column; 212. Steering plate; 213. Support plate; 214. Moving contact; 215. Connecting shaft; 216. Crank arm. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-4The utility model provides a technical solution: a safe manual operation device for an isolating switch. It includes a housing component 1, an anti-accidental touch component 2 is arranged inside the housing component 1, and the anti-accidental touch component 2 includes a pressing head 21 and a fixing block 29. The pressing head 21 is provided with an upper fixing plate 24 protruding outwards around it, and a telescopic spring 22 is fixedly connected to the bottom of the upper fixing plate 24. The telescopic spring 22 is used to drive the pressing head 21 to return to its original position after the pressing head 21 is pressed to change the position of the protruding block 28 on the top of the connecting rod 23 at one end of the pressing head 21 sliding inside the card slot 27. One end of the pressing head 21 is provided with a slot and is movably connected with a connecting block 29 inside. The connecting rod 23 is used to change the position of the top block 28 in the card slot 27 when the pressing head 21 is pressed, so as to change the squeezing of the top of the crank arm 216 by the pressing column 26. The bottom of the pressing head 21 is fixedly connected with a second telescopic spring 25. The second telescopic spring 25 is used to achieve the vertical movement distance of the pressing column 26 in the switch housing 11 when the bottom block 28 of the connecting rod 23 is clamped in different positions in the card slot 27. The bottom of the second telescopic spring 25 is fixedly connected with the pressing column 26. The surface of the pressing column 26 is provided with a card slot 27, and the top of the groove part of the card slot 27 is convex upward, so that the card block 28 protruding from the bottom of the connecting rod 23 can be clamped in different height adjustment positions. The bottom pressing column 26 squeezes the top of the crank arm 216. The interior of the fixing block 29 is hollow and the top is fixedly connected with a third telescopic spring 210. The third telescopic spring 210 can shrink inward when the top of the steering plate 212 abuts against the telescopic column 211, so that the telescopic column 211 is retracted into the interior of the fixing block 29, which is convenient for the steering plate 212 to change the bottom dynamic contact In the direction of the head 214 being engaged, the bottom of the third telescopic spring 210 is fixedly connected with the telescopic column 211, and support plates 213 are extended downwardly from both ends of the fixed block 29. A connecting shaft 215 is provided at the bottom of the support plate 213, and the external rotation of the connecting shaft 215 is connected with a steering plate 212. Crank arms 216 are extended from both ends of the steering plate 212, and the bottom of the crank arm 216 is fixedly connected with a moving contact 214. When the moving contact 214 is engaged with the static contact 13, the circuit is energized, and when the moving contact 214 is disengaged from the static contact 13, the circuit is disconnected.

[0021] See also Figure 1-2 The housing assembly 1 comprises a switch housing 11 , a fixing plate 12 is protruded from the top of the switch housing 11 , and a static contact 13 is fixedly connected to the bottom of the inner cavity of the switch housing 11 .

[0022] See also Figure 1-4The top of the telescopic spring 22 is fixedly connected to the bottom of the upper fixed plate 24, the bottom of the telescopic spring 22 is fixedly connected to the top of the fixed plate 12, the fixed block 29 is fixedly connected to the top of the inner cavity of the switch housing 11, the bottom of the connecting rod 23 is protruded with a card block 28, the card block 28 is slidably connected to the inside of the card slot 27, the top of the steering plate 212 is conical, the steering plate 212 is attached to the bottom of the telescopic column 211, the middle part of the card slot 27 is protruded and the two ends are inclined downward.

[0023] When in use, when it is necessary to disconnect the circuit, the pressing head 21 at one end of the power supply is pressed, and the connecting rod 23 slides inside the slot 27 and is clamped at the bottom of the slot 27, and the pressing column 26 rises. When the moving contact 214 fixedly connected to the bottom of the crank arm 216 is clamped inside the static contact 13 and the power is turned on, the pressing column 26 arranged on the top of the other end of the crank arm 216 is squeezed on the top of the crank arm 216. Due to the descent of the pressing head 21, the block 28 fixedly connected to the bottom of the connecting rod 23 is driven to slide inside the slot 27 and slide from the bottom of the slot 27 to the top. When sliding, there is a length difference between the bottom and the bottom of the slot 27. When the block 28 is clamped on the top of the slot 27, the pressing column 26 is automatically released by the second telescopic spring 25. Under the action of the elastic force of the body, the crank arm 216 is pressed downward, so that the movable contact 214 fixedly connected at the bottom of the crank arm 216 at one end of the power supply is separated from the internal circuit of the static contact 13 to disconnect the circuit; when the circuit needs to be connected, the pressing head 21 at one end of the power supply is pressed, and the protruding block 28 at the bottom of the connecting rod 23 slides inside the slot 27 until it is engaged with the bottom of the slot 27 to make the pressing column 26 rise, and at this time, the pressing head 21 at the other end is pressed to make the protruding block 28 at the top of the connecting rod 23 engaged in the slot 27 slide to the top of the slot 27, so that the second telescopic spring 25 drives the pressing column 26 to press downward the movable contact 214 fixedly connected at the bottom of one end of the crank arm 216 to be engaged with the inside of the static contact 13 to connect the circuit.

[0024] In this embodiment, a safe manual operating device for an isolating switch, among the above-mentioned components, its own structural features and working principles all adopt the existing technology and will not be described in detail here.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safe manual operating device for an isolating switch, comprising a housing assembly (1), characterized in that: An anti-mistaken-touch component (2) is arranged inside the housing component (1); The anti-mis-touch component (2) comprises a pressing head (21) and a fixing block (29); an upper fixing plate (24) protrudes outwardly from the periphery of the pressing head (21); a telescopic spring (22) is fixedly connected to the bottom of the upper fixing plate (24); a slot is provided at one end of the pressing head (21) and a connecting rod (23) is movably connected thereto; a second telescopic spring (25) is fixedly connected to the bottom of the pressing head (21); a pressing column (26) is fixedly connected to the bottom of the second telescopic spring (25); a card slot (27) is provided on the surface of the pressing column (26); The interior of the fixed block (29) is hollow and a third telescopic spring (210) is fixedly connected to the top; the bottom of the third telescopic spring (210) is fixedly connected to a telescopic column (211); support plates (213) extend downwardly from both ends of the fixed block (29); a connecting shaft (215) is provided at the bottom of the support plate (213); the outside of the connecting shaft (215) is rotatably connected to a steering plate (212); crank arms (216) extend from both ends of the steering plate (212); a moving contact (214) is fixedly connected to the bottom of the crank arm (216); The housing assembly (1) comprises a switch housing (11), a fixing plate (12) protruding from the top of the switch housing (11), and a stationary contact (13) fixedly connected to the bottom of the inner cavity of the switch housing (11).

2. A safe manual operating device for an isolating switch according to claim 1, characterized in that: The top of the telescopic spring (22) is fixedly connected to the bottom of the upper fixed plate (24), and the bottom of the telescopic spring (22) is fixedly connected to the top of the fixed plate (12).

3. A safe manual operating device for an isolating switch according to claim 1, characterized in that: The fixing block (29) is fixedly connected to the top of the inner cavity of the switch housing (11).

4. A safe manual operating device for an isolating switch according to claim 1, characterized in that: A clamping block (28) is protruded from the bottom of the connecting rod (23), and the clamping block (28) is slidably connected inside the clamping groove (27).

5. A safe manual operating device for an isolating switch according to claim 1, characterized in that: The top of the steering plate (212) is conical, and the steering plate (212) fits on the bottom of the telescopic column (211).

6. A safe manual operating device for an isolating switch according to claim 4, characterized in that: The middle part of the clamping slot (27) is raised and both ends are inclined downward.

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