Mechanical interlocking device for ring main unit

Abstract

The utility model discloses a kind of ring main unit mechanical interlocking devices, it is related to electric power equipment safety protection technical field, including interlocking base of installation on operating mechanism and interlocking lever support installed on cable chamber roof, grounding interlocking hook is hinged on the interlocking base, slidingly penetrating connection has interlocking bolt on the interlocking lever support, the interlocking bolt is hinged with the grounding interlocking hook;Interval is between the interlocking lever support with the interlocking bolt, support assembly is arranged at interval and is in rolling contact with the interlocking bolt;Interlocking bolt is fixedly connected with the block of dialling, and elastic component is arranged between the block of dialling with the interlocking lever support.The utility model effectively solves the problem of existing interlocking device noise, improves the working environment of staff, improves the security and comfort of operation.

Description

Technical Field

[0001] This utility model relates to the field of power equipment safety protection technology, and in particular to a mechanical interlocking device for a ring main unit. Background Technology

[0002] As a piece of equipment in the power distribution network, the operational safety of ring main units is directly related to the lives of personnel. During the inspection and maintenance of ring main units, the operating sequence of "grounding first, then opening the door" must be strictly followed to prevent serious accidents caused by live maintenance and to ensure the safety of workers. To enforce this operating sequence, existing ring main units are usually equipped with mechanical interlocking devices.

[0003] For example, patent CN218957608U discloses a cabinet door grounding interlock device for ring main units. The device is installed in the room of the operating mechanism and uses a mechanical interlocking mechanism to control the opening or closing of the cable compartment door in conjunction with the opening and closing of the operating mechanism. This effectively prevents live maintenance and ensures safe maintenance.

[0004] However, the inventors discovered in practice that the interlocking pin rubs against the pin hole and the limit plate during movement, producing a harsh sound. This sound can easily cause anxiety, irritability and other adverse physiological and psychological reactions in workers, seriously affecting their emotional state and concentration. This, in turn, negatively impacts the standardization and accuracy of subsequent maintenance operations, increasing potential safety hazards.

[0005] Therefore, it is necessary to develop a mechanical interlocking device for ring main units to address the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a mechanical interlocking device for ring main units, which effectively solves the problem of harsh noise in existing interlocking devices, improves the working environment for staff, and enhances the safety and comfort of operation.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This utility model discloses a mechanical interlocking device for a ring main unit, comprising an interlocking base mounted on an operating mechanism and an interlocking rod bracket mounted on the top plate of a cable compartment. A grounding interlocking hook is hinged to the interlocking base, and an interlocking pin is slidably connected through the interlocking rod bracket, the interlocking pin being hinged to the grounding interlocking hook. A gap exists between the interlocking rod bracket and the interlocking pin, and a support component is provided at the gap, making rolling contact with the interlocking pin. A lever is fixedly connected to the interlocking pin, and an elastic component is provided between the lever and the interlocking rod bracket.

[0009] Optionally, the interlocking rod bracket is provided with a through cavity for accommodating the interlocking pin, with both ends of the interlocking pin protruding from the through cavity.

[0010] Optionally, the support assembly includes a bullseye bearing, which is fixedly connected to the interlocking rod bracket, and the balls of the bullseye bearing are in rolling contact with the surface of the interlocking pin.

[0011] Optionally, the interlocking pin has a prism structure, and the top and bottom ends of the interlocking rod bracket are provided with bullseye bearings that correspond one-to-one with the facets of the interlocking pin.

[0012] Optionally, a through groove is provided on one side of the interlocking rod bracket. The through groove is adapted to the lifting path of the lever block. One end of the lever block passes through the through groove and is fixedly connected to the interlocking pin.

[0013] Optionally, the elastic component is a tension spring, one end of which is fixedly connected to the lever block, and the other end of which is fixedly connected to the interlocking rod bracket.

[0014] Optionally, the elastic component is a compression spring, which is located in the cavity and sleeved on the interlocking pin. One end of the compression spring abuts against the toggle block, and the other end of the spring abuts against the bullseye bearing located at the bottom end of the interlocking rod bracket.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] By using bullseye bearings as the support component, the movement of the interlocking pin is transformed from traditional sliding friction to rolling contact. The coefficient of rolling friction is much lower than that of sliding friction, thus significantly reducing the frictional resistance and harsh noise generated during the movement of the interlocking pin. This effectively solves the problem mentioned in the background technology of harsh noise causing operator anxiety, irritability, and distraction.

[0017] Rolling contact makes the movement of the interlocking pin smoother and easier, reduces operating resistance, and improves the operating feel.

[0018] Bullseye bearings effectively support the interlocking pins, ensuring their stability during movement; the prism-structured interlocking pins, in conjunction with multiple bullseye bearings, effectively prevent pin rotation and maintain stable movement direction.

[0019] Improving the operating environment (avoiding harsh noise) and enhancing operating comfort (making operation easier) helps operators maintain a good mindset and concentration, thereby indirectly improving the safety and standardization of subsequent maintenance operations.

[0020] It offers two types of elastic components: tension springs and compression springs, allowing for flexible selection based on actual space layout and design requirements, thus providing greater adaptability. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model;

[0023] Figure 2 This is a cross-sectional view of Embodiment 1 of the present invention;

[0024] Figure 3 This is a side view of Embodiment 1 of the present invention.

[0025] Figure 4 This is a cross-sectional structural diagram of Embodiment 2 of the present invention.

[0026] Explanation of reference numerals in the attached drawings: 100, interlocking base; 200, interlocking rod bracket; 210, through cavity; 220, through groove; 300, grounding interlocking hook; 400, interlocking pin; 500, toggle block; 600, elastic component; 700, bullseye bearing. Detailed Implementation

[0027] The core of this utility model is to provide a mechanical interlocking device for ring main units, which effectively solves the problem of harsh noise from existing interlocking devices, improves the working environment for staff, and enhances the safety and comfort of operation.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installing", "connecting", "joining", "fixing", "sleeving", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Example 1

[0032] In the specific implementation of Embodiment 1, as follows: Figures 1-3 As shown, the device includes an interlocking base 100 mounted on the operating mechanism and an interlocking rod bracket 200 mounted on the top plate of the cable compartment. A grounding interlocking hook 300 is hinged to the interlocking base 100, and an interlocking pin 400 is slidably connected through the interlocking rod bracket 200. The interlocking pin 400 is hinged to the grounding interlocking hook 300. There is a gap between the interlocking rod bracket 200 and the interlocking pin 400, and a support component is provided at the gap between the interlocking rod bracket 200 and the interlocking pin 400. A lever 500 is fixedly connected to the interlocking pin 400, and an elastic component 600 is provided between the lever 500 and the interlocking rod bracket 200.

[0033] In the specific implementation of Embodiment 1, as follows: Figure 2 As shown, the interlocking rod bracket 200 is provided with a through cavity 210 for accommodating the interlocking pin 400, and both ends of the interlocking pin 400 protrude from the through cavity 210; the support assembly is fixedly connected to the interlocking rod bracket 200 and is set to roll contact with the interlocking pin 400.

[0034] In the specific implementation of Embodiment 1, as follows: Figures 1-3 As shown, the support assembly includes a bullseye bearing 700, which is fixedly connected to the interlocking rod bracket 200. The balls of the bullseye bearing 700 roll in contact with the surface of the interlocking pin 400. Using the bullseye bearing 700 as the support assembly transforms the movement of the interlocking pin 400 from traditional sliding friction to rolling contact. The coefficient of rolling friction is much smaller than the coefficient of sliding friction, thus significantly reducing the frictional resistance and harsh noise generated by the interlocking pin 400 during movement. This effectively solves the problem mentioned in the background art of harsh noise causing operator anxiety, irritability, and distraction.

[0035] In the specific implementation of Embodiment 1, as follows: Figures 1-3 As shown, in order to provide stable support and prevent the interlocking pin 400 from rotating or shaking, the interlocking pin 400 is a prism structure, such as a cuboid structure. The top and bottom ends of the interlocking rod bracket 200 are provided with bullseye bearings 700 that correspond one-to-one with the facets of the interlocking pin 400.

[0036] In the specific implementation of Embodiment 1, as follows: Figure 2 and 3 As shown, a through groove 220 is provided on one side of the interlocking rod bracket 200. The through groove 220 is adapted to the lifting path of the lever block 500. One end of the lever block 500 passes through the through groove 220 and is fixedly connected to the interlocking pin 400.

[0037] In the specific implementation of Embodiment 1, as follows: Figures 1-3 As shown, the elastic component 600 is a tension spring. One end of the tension spring is fixedly connected to the lever 500, and the other end of the tension spring is fixedly connected to the interlocking rod bracket 200, i.e. Figures 1 to 3 As shown, a lug is fixed to one side of the top of the interlocking rod bracket 200. Both the lug and the lever 500 have through holes for hooking with the hook portion at the end of the tension spring. Obviously, both ends of the tension spring can also be welded to the lug and lever 500 respectively. The tension spring provides the elastic force to return the interlocking pin 400 (via the lever 500) upwards.

[0038] Example 2

[0039] The difference between this embodiment and Embodiment 1 lies in the way the elastic component 600 is configured.

[0040] In the specific implementation of Embodiment 1, as follows: Figure 4 As shown, the elastic component 600 is a compression spring. The compression spring is located in the cavity 210 and is sleeved on the interlocking pin 400. One end of the compression spring abuts against the toggle block 500, and the other end of the spring abuts against the bullseye bearing 700 located at the bottom of the interlocking rod bracket 200.

[0041] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably, and the embodiments can be combined with each other. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0042] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A mechanical interlocking device for a ring main unit, comprising an interlocking base (100) mounted on an operating mechanism and an interlocking rod bracket (200) mounted on the top plate of a cable compartment, wherein a grounding interlocking hook (300) is hinged to the interlocking base (100), and an interlocking pin (400) is slidably connected through the interlocking rod bracket (200), the interlocking pin (400) being hinged to the grounding interlocking hook (300), characterized in that: There is a gap between the interlocking rod bracket (200) and the interlocking pin (400), and a support component is provided at the gap and rolls in contact with the interlocking pin (400); a lever (500) is fixedly connected to the interlocking pin (400), and an elastic component (600) is provided between the lever (500) and the interlocking rod bracket (200).

2. The mechanical interlocking device for ring main units according to claim 1, characterized in that: The interlocking rod bracket (200) is provided with a through cavity (210) for accommodating the interlocking pin (400), and both ends of the interlocking pin (400) protrude from the through cavity (210).

3. The mechanical interlocking device for ring main units according to claim 2, characterized in that: The support assembly includes a bullseye bearing (700), which is fixedly connected to the interlocking rod bracket (200), and the balls of the bullseye bearing (700) are in rolling contact with the surface of the interlocking pin (400).

4. The mechanical interlocking device for ring main units according to claim 3, characterized in that: The interlocking pin (400) has a prism structure, and the top and bottom ends of the interlocking rod bracket (200) are provided with bullseye bearings (700) that correspond one-to-one with the facets of the interlocking pin (400).

5. The mechanical interlocking device for ring main units according to claim 1, characterized in that: The interlocking rod bracket (200) has a through groove (220) on one side. The through groove (220) is adapted to the lifting path of the lever (500). One end of the lever (500) passes through the through groove (220) and is fixedly connected to the interlocking pin (400).

6. The mechanical interlocking device for ring main units according to claim 1, characterized in that: The elastic component (600) is a tension spring. One end of the tension spring is fixedly connected to the lever block (500), and the other end of the tension spring is fixedly connected to the interlocking rod bracket (200).

7. The mechanical interlocking device for ring main units according to claim 4, characterized in that: The elastic component (600) is a compression spring, which is located in the cavity (210) and sleeved on the interlocking pin (400). One end of the compression spring abuts against the lever block (500), and the other end of the spring abuts against the bullseye bearing (700) located at the bottom of the interlocking rod bracket (200).

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