Safety protection device for high-voltage electrical switch

Abstract

The utility model provides a safety protection device for a high-voltage electrical switch, which comprises an electrical switch and a mechanical pair, the mechanical pair is mounted on one side of the electrical switch, the electrical switch is linked with the mechanical pair, a lock cylinder is mounted on the mechanical pair, the electrical switch is turned on when the lock cylinder is vertical, and the electrical switch is turned off when the lock cylinder is transverse. A key core is inserted into the lock cylinder, the key core of the lock cylinder cannot be pulled out, the outer end of the key core is fixedly connected with a key head, and the front face of the mechanical pair is fixedly connected with a connector. The utility model has the advantages that the sealing door cannot be opened without turning off the electrical switch, the technician cannot contact the high-voltage area, the technician can open the sealing door to contact the high-voltage area for maintenance after the electrical switch is turned off, the electrical switch is combined with the mechanical lock to ensure that the equipment is safely powered off before maintenance, the electric shock risk in the maintenance process is reduced, and the maintenance safety is improved. The safety is better, and an additional safety guarantee is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage electricity, in particular to a safety protection device for a high-voltage electrical switch. Background Art

[0002] When technicians open and perform maintenance in the high-voltage area of low-voltage equipment, it is easy to forget the electrical switch, thus directly contacting the dangerous live area, resulting in safety accidents.

[0003] Therefore, a safety protection device for a high-voltage electrical switch is designed. The electrical switch and the mechanical sub-interlock are linked, and when powered on, it can prevent the high-voltage area from being opened, thus preventing technicians from contacting the dangerous area. It has better safety, provides additional safety protection, and effectively solves the problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model aims to solve at least one of the technical defects.

[0005] For this reason, an object of the utility model is to provide a safety protection device for a high-voltage electrical switch to solve the problems mentioned in the background art and overcome the deficiencies existing in the prior art.

[0006] To achieve the above object, an embodiment of one aspect of the utility model provides a safety protection device for a high-voltage electrical switch, including an electrical switch, a mechanical sub, the mechanical sub is installed on one side of the electrical switch, the electrical switch is linked with the mechanical sub, and a lock core is installed on the mechanical sub;

[0007] When the lock core is vertical, the electrical switch is opened, and when the lock core is horizontal, the electrical switch is turned off. A key core is inserted into the lock core, and the key core of the lock core cannot be pulled out. The outer end of the key core is fixedly connected with a key head;

[0008] A joint is fixedly connected to the front of the mechanical sub, a rotating rod is movably connected to the inner side of the joint, a lock plate is fixedly connected to one side of the rotating rod, a resisting frame is fixedly connected to the other side of the rotating rod, and the bottom end of the resisting frame abuts against the top surface of the key head;

[0009] A sealing door is arranged on the outside of the mechanical sub, a handle is installed on the sealing door, and the back of the lock plate abuts against the front of the sealing door.

[0010] Preferably, any of the above solutions, the electrical switch and the mechanical sub are assembled by screws.

[0011] Adopting the above technical solution: This safety protection device for a high-voltage electrical switch, the so-called safety protection specifically refers to protecting technicians.

[0012] The core structure of this device is: mechanical pair, lock core, key core, key head, joint, rotating rod, lock plate, abutting frame, sealing door and handle.

[0013] Preferably, according to any of the above solutions, the lock core is driven to rotate by the key core.

[0014] Preferably, according to any of the above solutions, the joint is located above the lock core, and the rotating rod, lock plate and abutting frame are of an integral structure.

[0015] Adopting the above technical solution: a mechanical pair is designed on one side of the electrical switch, and a lock core is installed on the mechanical pair. When the lock core is vertical, the electrical switch is turned on, and when the lock core is horizontal, the electrical switch is turned off. Due to the existence of the key core and key head, when the electrical switch is in the on state, due to the existence of the key head, the abutting frame abuts against the top surface of the key head, and the lock plate obstructs the sealing door, and the sealing door cannot be opened;

[0016] Therefore, when it is necessary to open the sealing door to open the high-voltage area of the equipment for maintenance, it is necessary to use the key to rotate the lock core to turn off the electrical switch to cut off the power supply in this area. At this time, the key head is horizontal, and at this time the abutting frame has space to rotate downward. At this time, rotate the rotating rod, abutting frame and lock plate as a whole downward, the lock plate disengages from the surface of the sealing door and does not obstruct the opening of the sealing door. At this time, the handle can be manually operated to open the sealing door for maintenance of this high-voltage area. That is, only after the electrical switch is turned off can the technician open the sealing door to contact the high-voltage area for maintenance. The combination of the electrical switch and the mechanical lock ensures that the equipment has been safely powered off before maintenance, reduces the risk of electric shock during the maintenance process, has better safety, and provides additional safety protection.

[0017] Preferably, according to any of the above solutions, the rotating rod, lock plate and abutting frame are all located above the lock core, and the included angle between the lock plate and the abutting frame is an obtuse angle.

[0018] Preferably, according to any of the above solutions, the length of the lock plate is less than the length of the abutting frame.

[0019] Compared with the prior art, the advantages and beneficial effects of the present utility model are:

[0020] For this safety protection device for high-voltage electrical switches, through the cooperative setting of the mechanical pair, lock core, key core, key head, joint, rotating rod, lock plate, abutting frame, sealing door and handle, a mechanical pair is designed on one side of the electrical switch, and a lock core is installed on the mechanical pair. When the lock core is vertical, the electrical switch is turned on, and when the lock core is horizontal, the electrical switch is turned off. Due to the existence of the key core and key head, when the electrical switch is in the on state, due to the existence of the key head, the abutting frame abuts against the top surface of the key head, and the lock plate obstructs the sealing door, and the sealing door cannot be opened, that is, the sealing door cannot be opened without turning off the electrical switch and the technician cannot contact the high-voltage area;

[0021] Therefore, when you want to open the sealed door and access the high-voltage area of the device for maintenance, you must use the key to rotate the lock core to turn off the electrical switch, cut off the power supply in this area. At this time, the key head is horizontal, and only then does the abutment have room to rotate downward. Then rotate the lever, abutment, and lock plate as a whole downward. The lock plate disengages from the surface of the sealed door and does not obstruct the opening of the sealed door. Only then can you manually operate the handle to open the sealed door and perform maintenance on this high-voltage area. That is, only after the electrical switch is turned off can the technician open the sealed door and access the high-voltage area for maintenance. The combination of the electrical switch and the mechanical lock ensures that the device has been safely powered off before maintenance, reducing the risk of electric shock during the maintenance process, providing better safety, and offering additional safety protection.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the second perspective of the present utility model;

[0026] Figure 3 is a schematic front view structural diagram of the present utility model;

[0027] Figure 4 For the present utility model Figure 2 is an enlarged schematic structural diagram of part A in the present utility model.

[0028] In the figure: 1 - electrical switch, 2 - mechanical deputy, 3 - lock core, 4 - key core, 5 - key head, 6 - joint, 7 - lever, 8 - lock plate, 9 - abutment, 10 - sealed door, 11 - handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0030] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] As Figures 1-4 shown, the safety protection device for the high-voltage electrical switch includes an electrical switch 1 and a mechanical sub-unit 2. The mechanical sub-unit 2 is installed on one side of the electrical switch 1. The electrical switch 1 is linked with the mechanical sub-unit 2, and a lock core 3 is installed on the mechanical sub-unit 2.

[0032] When the lock core 3 is vertical, the electrical switch 1 is opened. When the lock core 3 is horizontal, the electrical switch 1 is turned off. A key core 4 is inserted into the lock core 3, and the key core 4 of this lock core 3 cannot be pulled out. The outer end of the key core 4 is fixedly connected with a key head 5.

[0033] A joint 6 is fixedly connected to the front of the mechanical sub-unit 2. A rotating rod 7 is movably connected to the inner side of the joint 6. A lock plate 8 is fixedly connected to one side of the rotating rod 7. A supporting frame 9 is fixedly connected to the other side of the rotating rod 7. The bottom end of the supporting frame 9 abuts against the top surface of the key head 5.

[0034] A sealing door 10 is arranged on the outer side of the mechanical sub-unit 2. A handle 11 is installed on the sealing door 10. The back of the lock plate 8 abuts against the front of the sealing door 10.

[0035] Embodiment 1: The electrical switch 1 and the mechanical sub-unit 2 are assembled by screws. The safety protection device for the high-voltage electrical switch, here the safety protection specifically refers to the safety protection for technicians. The core structure of this device is: the mechanical sub-unit 2, the lock core 3, the key core 4, the key head 5, the joint 6, the rotating rod 7, the lock plate 8, the supporting frame 9, the sealing door 10 and the handle 11. The lock core 3 is driven to rotate by the key core 4. The joint 6 is located above the lock core 3. The rotating rod 7, the lock plate 8 and the supporting frame 9 are of an integral structure.

[0036] When the lock core 3 rotates to be horizontal, the internal contacts of the electrical switch 1 are disconnected, realizing the turn-off of the electrical switch 1.

[0037] Embodiment 2: The rotating rod 7, the lock plate 8 and the supporting frame 9 are all located above the lock core 3. The included angle between the lock plate 8 and the supporting frame 9 is an obtuse angle. The length of the lock plate 8 is less than the length of the supporting frame 9.

[0038] The key core 4 of the lock core 3 cannot be pulled out. Even when the lock core 3 is in the open state, the key cannot be pulled out. This is usually achieved by designing a special lock core structure or adding an additional locking mechanism.

[0039] The working principle of the present utility model is as follows:

[0040] When the electrical switch 1 is in the on state, due to the existence of the key head 5, the abutment frame 9 abuts against the top surface of the key head 5, and the locking plate 9 obstructs the sealing door 10, so the sealing door 10 cannot be opened;

[0041] When it is desired to open the sealing door 10 to open the high-voltage area of the equipment for maintenance, it is necessary to use the key to rotate the lock core 3 to turn off the electrical switch 1 to cut off the power supply in this area. At this time, the key head 5 is horizontal, and only then does the abutment frame 9 have room to rotate downward. At this time, rotate the lever 7, the abutment frame 9, and the locking plate 8 as a whole downward. The locking plate 8 disengages from the surface of the sealing door 10 and does not obstruct the opening of the sealing door 10. Only then can the handle 11 be manually operated to open the sealing door 10 for maintenance of this high-voltage area. That is, only after the electrical switch 1 is turned off can the technician open the sealing door 10 to access the high-voltage area for maintenance.

[0042] Compared with the prior art, the present utility model has the following beneficial effects over the prior art:

[0043] In this safety protection device for high-voltage electrical switches, through the cooperative setting of the mechanical pair 2, the lock core 3, the key core 4, the key head 5, the joint 6, the lever 7, the locking plate 8, the abutment frame 9, the sealing door 10, and the handle 11, a mechanical pair 2 is designed on one side of the electrical switch 1, and a lock core 3 is installed on the mechanical pair 2. When the lock core 3 is vertical, the electrical switch 1 is turned on, and when the lock core 3 is horizontal, the electrical switch 1 is turned off. Due to the existence of the key core 4 and the key head 5, when the electrical switch 1 is in the on state, due to the existence of the key head 5, the abutment frame 9 abuts against the top surface of the key head 5, and the locking plate 9 obstructs the sealing door 10, so the sealing door 10 cannot be opened;

[0044] Therefore, when it is desired to open the sealing door 10 to open the high-voltage area of the equipment for maintenance, it is necessary to use the key to rotate the lock core 3 to turn off the electrical switch 1 to cut off the power supply in this area. At this time, the key head 5 is horizontal, and only then does the abutment frame 9 have room to rotate downward. At this time, rotate the lever 7, the abutment frame 9, and the locking plate 8 as a whole downward. The locking plate 8 disengages from the surface of the sealing door 10 and does not obstruct the opening of the sealing door 10. Only then can the handle 11 be manually operated to open the sealing door 10 for maintenance of this high-voltage area. That is, only after the electrical switch 1 is turned off can the technician open the sealing door 10 to access the high-voltage area for maintenance. The combination of the electrical switch 1 and the mechanical lock ensures that the equipment has been safely powered off before maintenance, reduces the risk of electric shock during the maintenance process, has better safety, and provides additional safety protection.

Claims

1. A safety protection device for a high voltage electrical switch, characterized in that: It comprises an electrical switch (1) and a mechanical pair (2), wherein the mechanical pair (2) is installed on one side of the electrical switch (1), the electrical switch (1) and the mechanical pair (2) are linked, and a lock core (3) is installed on the mechanical pair (2); When the lock core (3) is in a vertical position, the electrical switch (1) is turned on; when the lock core (3) is in a horizontal position, the electrical switch (1) is turned off; a key core (4) is inserted into the lock core (3); the key core (4) of the lock core (3) cannot be pulled out; and a key head (5) is fixedly connected to the outer end of the key core (4); The front side of the mechanical pair (2) is fixedly connected to a joint (6), the inner side of the joint (6) is movably connected to a rotating rod (7), one side of the rotating rod (7) is fixedly connected to a lock plate (8), the other side of the rotating rod (7) is fixedly connected to a support frame (9), and the bottom end of the support frame (9) abuts against the top surface of the key head (5); A sealing door (10) is arranged on the outer side of the mechanical pair (2), a handle (11) is installed on the sealing door (10), and the back of the locking plate (8) abuts against the front of the sealing door (10).

2. A safety protection device for a high-voltage electrical switch according to claim 1, characterized in that: The electrical switch (1) and the mechanical pair (2) are assembled by means of screws.

3. A safety protection device for a high-voltage electrical switch according to claim 2, characterized in that: The lock core (3) is driven to rotate by the key core (4).

4. A safety protection device for a high-voltage electrical switch according to claim 3, characterized in that: The joint (6) is located above the lock core (3), and the rotating rod (7), the lock plate (8) and the support frame (9) are an integrated structure.

5. A safety protection device for a high-voltage electrical switch according to claim 4, characterized in that: The rotating rod (7), the locking plate (8) and the supporting frame (9) are all located above the lock core (3), and the included angle between the locking plate (8) and the supporting frame (9) is an obtuse angle.

6. A safety protection device for a high-voltage electrical switch according to claim 5, characterized in that: The length of the locking plate (8) is smaller than the length of the bracket (9).

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