Grounding switch locking device

Abstract

The utility model relates to the technical field of switch equipment, in particular to a locking device of a grounding switch. The interlocking mechanism comprises a mechanism mounting plate, an interlocking mounting seat, a latching electromagnet, a latching shifting plate and a grounding switch operating shaft, the interlocking mounting seat is connected to the mechanism mounting plate, the grounding switch operating shaft is movably connected to the mechanism mounting plate, the latching shifting plate is movably connected to the interlocking mounting seat, the upper end of the latching shifting plate is blocked in the telescopic direction of the grounding switch operating shaft, and the lower end of the latching shifting plate is blocked in the telescopic direction of the grounding switch operating shaft. And the latching electromagnet is positioned on one side of the interlocking mounting seat, and limits the swing of the lower end of the latching shifting plate during latching. According to the utility model, through the cooperation of the latching electromagnet and the interlocking installation seat, the swing of the latching shifting plate is limited to play a latching role, so that the latching structure is more stable and reliable; and meanwhile, during unlocking, the end of the operating handle is longitudinally tangent to the locking shifting plate, and the stroke required by unlocking is further amplified by utilizing the lever principle, so that the unreliability of the interlocking device caused by installation errors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of switch equipment, in particular to a grounding switch locking device. Background Art

[0002] In the existing switchgear, in order to further prevent misoperation, the grounding switch is controlled by installing an electromagnetic lock for incoming line locking. However, the existing electromagnetic lock is large in size and high in cost, and the locking rod of the electromagnetic lock is easily bent and deformed after long-term use, resulting in the electromagnetic lock being stuck, and then the electromagnetic lock cannot normally lock the grounding switch. Many manufacturers use locking electromagnet interlocking devices to replace electromagnetic locks to lock the grounding switch, but the device structure is complex and not reliable and stable enough. Utility Model Content

[0003] The utility model provides a grounding switch locking device, aiming to solve the technical problems existing in the electromagnetic lock used in the existing locking control.

[0004] The utility model provides a grounding switch locking device, comprising a mechanism mounting plate, an interlocking mounting seat, a locking electromagnet, a locking dial plate, and a grounding switch operating shaft, wherein the interlocking mounting seat is connected to the mechanism mounting plate, the grounding switch operating shaft is movably connected to the mechanism mounting plate, the locking dial plate is movably connected to the interlocking mounting seat, the upper end of the locking dial plate blocks the telescopic direction of the grounding switch operating shaft, the locking electromagnet is located on one side of the interlocking mounting seat, and when locked, the locking electromagnet limits the swing of the lower end of the locking dial plate.

[0005] As a further improvement of the utility model, a limiting hole is provided on the interlocking mounting seat, and the locking electromagnet is provided with a telescopic rod, and the telescopic rod is aligned with the limiting hole. When locking, the telescopic rod passes through the limiting hole and blocks the swinging path of the lower end of the locking plate. When unlocking, the telescopic rod is attracted and retracted to avoid the swinging path of the lower end of the locking plate.

[0006] As a further improvement of the utility model, the grounding switch locking device also includes an electromagnet mounting plate, and the locking electromagnet is connected to the interlocking mounting seat through the electromagnet mounting plate.

[0007] As a further improvement of the utility model, the grounding switch locking device also includes a first rotating sleeve, a rotating hole is provided in the middle of the locking plate, the first rotating sleeve is fixed on the interlocking mounting seat after passing through the rotating hole, and the locking plate swings around the first rotating sleeve.

[0008] As a further improvement of the utility model, the grounding switch locking device also includes a second rotating sleeve, and an arc groove is also provided in the middle of the locking plate, the center of the arc groove is located at the rotating hole, and the second rotating sleeve is fixed on the interlocking mounting seat and limited in the arc groove.

[0009] As a further improvement of the present invention, the grounding switch locking device further comprises a reset spring, one end of the reset spring is connected to the locking plate, and the other end of the reset spring is connected to the interlocking mounting seat.

[0010] As a further improvement of the present invention, the grounding switch locking device is characterized in that it also includes an operating handle, and the operating handle is connected to the front end of the grounding switch operating shaft.

[0011] As a further improvement of the utility model, in the locked state, the upper end of the locking plate blocks the operating handle from pushing the operating shaft of the grounding switch, and in the unlocked state, the operating handle pushes the locking plate and the operating shaft of the grounding switch at the same time.

[0012] The beneficial effects of the utility model are as follows: through the cooperation between the locking electromagnet and the interlocking mounting seat, the swing of the locking plate is limited to play a locking role, making the locking structure more stable and reliable; at the same time, when the locking device is unlocked, the operating handle end and the locking plate are longitudinally tangent, and the lever principle is used to further amplify the travel required for unlocking, thereby avoiding the unreliability of the interlocking device caused by installation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front structural diagram of the utility model grounding switch locking device in a locked state;

[0014] Figure 2 This is a side structural diagram of the utility model grounding switch locking device in a locked state;

[0015] Figure 3 This is a front structural diagram of the grounding switch locking device of the utility model in the unlocked state;

[0016] Figure 4 It is a side structural diagram of the grounding switch locking device of the utility model in the unlocked state. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figures 1 to 4 As shown, a grounding switch locking device of the utility model comprises a mechanism mounting plate 1, an interlocking mounting seat 2, a locking electromagnet 3, a locking plate 4, and a grounding switch operating shaft 5. The interlocking mounting seat 2 is connected to the mechanism mounting plate 1, the grounding switch operating shaft 5 is movably connected to the mechanism mounting plate 1, the locking plate 4 is movably connected to the interlocking mounting seat 2, the upper end of the locking plate 4 blocks the telescopic direction of the grounding switch operating shaft 5, the locking electromagnet 3 is located on one side of the interlocking mounting seat 2, and the locking electromagnet 3 limits the swing of the lower end of the locking plate 4 when locking.

[0019] The interlocking mounting seat 2 is provided with a limiting hole 21, and the locking electromagnet 3 is provided with a telescopic rod 31, and the telescopic rod 31 is aligned with the limiting hole 21. When locking, the telescopic rod 31 passes through the limiting hole 21 and blocks the swing path of the lower end of the locking plate 4. When unlocking, the telescopic rod 31 is attracted and retracted to avoid the swing path of the lower end of the locking plate 4. The telescopic rod 31 of the locking electromagnet 3 passes through the limiting hole 21 of the mounting plate, and the limiting hole 21 will limit and protect the telescopic rod 31 of the locking electromagnet 3, thereby preventing the telescopic rod 31 of the locking electromagnet 3 from being deformed, thereby making the locking device more stable and reliable.

[0020] The grounding switch locking device also includes an electromagnet mounting plate 32, through which the locking electromagnet 3 is connected to the interlocking mounting seat 2. The electromagnet mounting plate 32 is used to fix the locking electromagnet 3 on one side of the interlocking mounting seat 2, ensuring that the telescopic rod 31 of the locking electromagnet 3 can be aligned with the limiting hole 21, so that the locking structure is more firm and stable.

[0021] The grounding switch locking device further includes a first rotating sleeve 7. A rotating hole is provided in the middle of the locking plate 4. The first rotating sleeve 7 passes through the rotating hole and is fixed on the interlocking mounting seat 2. The locking plate 4 swings around the first rotating sleeve 7. The first rotating sleeve 7 flexibly connects the locking plate 4 to the interlocking mounting seat 2. At the same time, the first rotating sleeve 7 serves as the rotation axis of the locking plate 4. The locking plate 4 can rotate around the first rotating sleeve 7 in the unlocked state.

[0022] The grounding switch locking device also includes a second rotating sleeve 8, and an arc groove 41 is also provided in the middle of the locking plate 4. The center of the arc groove 41 is located at the rotating hole. The second rotating sleeve 8 is fixed on the interlocking mounting seat 2 and limited in the arc groove 41. The cooperation between the first rotating sleeve 7 and the arc groove 41 limits the maximum swing range of the locking plate 4 to prevent the locking plate 4 from swinging too much and affecting the movement of other parts, and also prevents the swing from exceeding the elastic force range of the reset spring 6, ensuring that the locking plate 4 can be reset after the external force is removed.

[0023] The first rotating sleeve 7 and the second rotating sleeve 8 are preferably copper sleeves.

[0024] The grounding switch locking device also includes a reset spring 6, one end of which is connected to the locking plate 4, and the other end of which is connected to the interlocking mounting seat 2. In the unlocked state, the operating handle 9 will push the locking plate 4 to rotate, but after the operating handle 9 is withdrawn, the reset spring 6 can pull the locking plate 4 back to block the front end of the grounding switch operating shaft 5, ensuring that when locking is required, the telescopic rod 31 of the locking electromagnet 3 can limit the locking plate 4 after passing through the limiting hole 21.

[0025] The grounding switch locking device also includes an operating handle 9, which is connected to the front end of the grounding switch operating shaft 5. The operating handle 9 is equivalent to an unlocking key. When the operating handle 9 is inserted into the grounding switch operating shaft 5, the grounding switch operating shaft 5 is pushed to complete the unlocking.

[0026] When the grounding switch locking device is in the locked state, the upper end of the locking plate 4 blocks the operating handle 9 from pushing the grounding switch operating shaft 5. When the grounding switch locking device is in the unlocked state, the operating handle 9 simultaneously pushes the locking plate 4 and the grounding switch operating shaft 5. When the locking device is unlocked, the end of the operating handle 9 is longitudinally tangent to the locking plate 4, and the lever principle is used to further amplify the travel required for unlocking the locking device, thereby avoiding the unreliability of the interlocking device caused by installation errors.

[0027] Working principle of this grounding switch locking device:

[0028] (1) When the switch device is energized, the telescopic rod 31 of the locking electromagnet 3 is in the initial state. At this time, the locking plate 4 is in the locking position under the action of the reset spring 6. The telescopic rod 31 of the locking electromagnet 3 forms a limiting fit with the limiting hole 21 of the locking plate 4, blocking the swing trajectory of the lower end of the locking plate 4. The locking plate 4 is limited to the locking position, and the upper end of the locking plate 4 blocks the front end of the grounding switch operating shaft 5. At this time, the operating handle 9 cannot operate the grounding switch operating shaft 5.

[0029] (2) When the switch device loses power, the telescopic rod 31 of the locking electromagnet 3 is in an attracted and retracted state. At this time, the grounding switch locking device is in an unlocked state. The telescopic rod 31 of the locking electromagnet 3 does not form a limiting fit with the limiting hole 21 of the locking plate 4, so that the locking plate 4 can be rotated from the locked position to the unlocked position. When the operating handle 9 is docked with the grounding switch operating shaft 5, it will contact the upper end of the locking plate 4. When pushed forward, the locking plate 4 is rotated to make the locking plate 4 give way. At this time, the operator can operate the grounding switch operating shaft 5 through the operating handle 9.

[0030] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A grounding switch locking device, characterized in that: It includes a mechanism mounting plate, an interlocking mounting seat, a locking electromagnet, a locking plate, and an earthing switch operating shaft. The interlocking mounting seat is connected to the mechanism mounting plate, the earthing switch operating shaft is movably connected to the mechanism mounting plate, the locking plate is movably connected to the interlocking mounting seat, the upper end of the locking plate blocks the telescopic direction of the earthing switch operating shaft, the locking electromagnet is located on one side of the interlocking mounting seat, and when locked, the locking electromagnet limits the swing of the lower end of the locking plate.

2. The grounding switch locking device according to claim 1, characterized in that: The interlocking mounting seat is provided with a limiting hole, and the locking electromagnet is provided with a telescopic rod, and the telescopic rod is aligned with the limiting hole. When locking, the telescopic rod passes through the limiting hole and blocks the swinging path of the lower end of the locking plate. When unlocking, the telescopic rod is attracted and retracted to avoid the swinging path of the lower end of the locking plate.

3. The grounding switch locking device according to claim 1, characterized in that: It also includes an electromagnet mounting plate, and the locking electromagnet is connected to the interlocking mounting seat through the electromagnet mounting plate.

4. The grounding switch locking device according to claim 1, characterized in that: It also includes a first rotating sleeve, a rotating hole is provided in the middle of the locking plate, the first rotating sleeve passes through the rotating hole and is fixed on the interlocking mounting seat, and the locking plate swings around the first rotating sleeve.

5. The grounding switch locking device according to claim 4, characterized in that: It also includes a second rotating sleeve, and an arc groove is provided in the middle of the locking plate. The center of the arc groove is located at the rotating hole. The second rotating sleeve is fixed on the interlocking mounting seat and limited in the arc groove.

6. The grounding switch locking device according to claim 1, characterized in that: It also includes a return spring, one end of which is connected to the locking plate, and the other end of which is connected to the interlocking mounting seat.

7. The grounding switch locking device according to claim 1, characterized in that: It also includes an operating handle, which is connected to the front end of the operating shaft of the grounding switch.

8. The grounding switch locking device according to claim 7, characterized in that: In the locked state, the upper end of the locking plate blocks the operating handle from pushing the operating shaft of the grounding switch, and in the unlocked state, the operating handle pushes the locking plate and the operating shaft of the grounding switch simultaneously.

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