Ring main unit

Abstract

The utility model belongs to the technical field of power distribution equipment, and discloses a ring main unit, which comprises an operation panel, a protective cover and a positioning mechanism, the operation panel is provided with an operation hole, the protective cover is rotatably arranged on the operation panel and is used for closing or opening the operation hole, the positioning mechanism comprises a positioning piece, the positioning piece is movably arranged on the operation panel, and the positioning piece is used for positioning the operation hole. And when the protective cover opens the operation hole, the positioning piece moves relative to the operation panel and is clamped with the protective cover. According to the ring main unit provided by the utility model, the protective cover can be reliably and effectively positioned after the protective cover is opened, the structure is simple, the operation is convenient, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution equipment, in particular to a ring main unit. Background Art

[0002] A ring main unit is a high-voltage switchgear used for power transmission and distribution. Referring to Figure 1 as shown, the ring main unit in the prior art includes components such as an instrument box 1', a mechanism chamber 2', a gas box 3', an operation panel 4', a cable chamber 6', etc. An operation hole is provided in the mechanism chamber 2'. During the operation of the ring main unit, when power is supplied or cut off, an operating rod is required to operate the mechanism through the operation hole to achieve the effect of power supply and power cut-off. Since the diameter of the operation hole is large, in order to meet the IP4X protection level specified for the ring main unit in the power industry standard, a protective cover 5' needs to be additionally installed outside the operation hole. In Figure 1 the provided ring main unit, the protective cover 5' can rotate relative to the mechanism chamber 2' to open the operation hole.

[0003] In the prior art, the above-mentioned protective cover 5' of the ring main unit is not provided with a positioning device. When power operation and maintenance personnel operate the ring main unit, they need to hold the protective cover 5' by hand to keep it in the open state, which consumes labor costs. And the operation and maintenance personnel generally need to hold it with both hands and rotate the operating rod with a large force to complete the operation steps of the ring main unit, resulting in extremely inconvenient operation for a single operation and maintenance personnel. If the above actions are to be reliably achieved, the number of operation and maintenance personnel needs to be increased, further increasing the labor costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a ring main unit, which can reliably and effectively position the protective cover after it is opened, with a simple structure and convenient operation.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A ring main unit, characterized by comprising:

[0007] An operation panel, provided with an operation hole;

[0008] A protective cover, rotatably arranged on the operation panel and used for closing or opening the operation hole;

[0009] A positioning mechanism, including a positioning member, the positioning member is movably arranged on the operation panel, and when the protective cover opens the operation hole, the positioning member moves relative to the operation panel and engages with the protective cover.

[0010] Preferably, the positioning mechanism further includes a base frame fixed on the operation panel, and the positioning member is slidably arranged on the base frame along a first direction;

[0011] The protective cover is provided with a clamping hole. When the protective cover opens the operation hole, the positioning member can be inserted into the clamping hole by sliding.

[0012] Preferably, the positioning mechanism further includes an elastic member, and the elastic member is arranged between one end of the positioning member and the base frame;

[0013] When the protective cover opens the operation hole, the elastic member is configured to insert the positioning member into the clamping hole.

[0014] Preferably, the base frame is extended with a slideway, the positioning member is slidably connected to the slideway, a guiding groove is arranged on the side wall of the slideway, the positioning member is provided with a sliding head, and the sliding head passes through the guiding groove and is slidably connected to the guiding groove.

[0015] Preferably, a positioning abutting head is fixedly arranged in the slideway, the first end of the elastic member abuts against the positioning member, and the second end of the elastic member abuts against the positioning abutting head.

[0016] Preferably, the positioning abutting head includes a fixing part and an abutting part, the fixing part is fixed in the slideway, the abutting part is fixed on the fixing part and is provided with a first mounting hole, and the second end of the elastic member is fixedly inserted into the first mounting hole.

[0017] Preferably, the fixing part is provided with a second mounting hole, the base frame is provided with a third mounting hole, a first fixing member passes through the second mounting hole and the third mounting hole, and fixedly connects the second mounting hole and the third mounting hole.

[0018] Preferably, the positioning member includes a head and a rod part, the head is slidably connected to the base frame, the first end of the head is used for inserting into the clamping hole, the second end of the head is connected to the rod part, and the elastic member is located in the slideway and sleeved on the rod part.

[0019] Preferably, the first end of the head is arranged as a conical structure.

[0020] Preferably, the base frame is provided with a fourth mounting hole, the operation panel is provided with a fifth mounting hole, a second fixing member passes through the fourth mounting hole and the fifth mounting hole, and fixedly connects the fourth mounting hole and the fifth mounting hole.

[0021] Beneficial effects:

[0022] The ring main unit provided by the utility model is provided with a positioning mechanism. When the protective cover on the operation panel rotates to open the operation hole on the operation panel, the positioning member of the positioning mechanism can move relative to the operation panel and be clamped with the protective cover, avoiding the rotation of the protective cover and realizing the reliable positioning of the protective cover. By applying the above positioning mechanism, the ring main unit can realize the reliable positioning of the protective cover after it is opened, which is convenient to operate, has strong practicability, simplifies the operation of power maintenance personnel, releases the hands of the operator to jointly rotate the operating rod, improves the operation efficiency, and also reduces the employment of maintenance personnel and the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a ring main unit provided by the prior art;

[0024] Figure 2 is a schematic diagram of the operation panel of the ring main unit provided by the utility model;

[0025] Figure 3 is at Figure 3 a partial enlarged schematic diagram of part A in;

[0026] Figure 4 is a schematic structural diagram of the positioning mechanism provided by the utility model;

[0027] Figure 5 is a schematic structural diagram of the positioning member and the elastic member provided by the utility model.

[0028] In the figure:

[0029] 1', instrument box; 2', mechanism chamber; 3', gas box; 4', operation panel; 5', protective cover; 6', cable chamber;

[0030] 1, operation panel; 101, operation hole;

[0031] 2, protective cover; 21, positioning head; 211, clamping hole;

[0032] 3, positioning mechanism;

[0033] 31, base frame; 311, slideway; 312, guide groove; 313, positioning abutting head; 3131, fixing part; 31311, second mounting hole; 3132, abutting part; 31321, first mounting hole; 314, third mounting hole; 315, fourth mounting hole;

[0034] 32, positioning member; 321, head; 3211, sliding head; 322, rod part;

[0035] 33, elastic member; 331, plug. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0037] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. 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.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above the upper part", and "on the upper surface" of the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the lower part", and "on the lower surface" of the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0039] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0040] This embodiment provides a ring main unit. Refer to Figures 2 to 5 As shown, the ring main unit includes an operation panel 1, a protective cover 2, and a positioning mechanism 3. Among them, the operation panel 1 is provided with an operation hole 101. The protective cover 2 is rotatably arranged on the operation panel 1 and is used to close or open the operation hole 101. The positioning mechanism 3 includes a positioning member 32. The positioning member 32 is movably arranged on the operation panel 1. When the protective cover 2 opens the operation hole 101, the positioning member 32 moves relative to the operation panel 1 and engages with the protective cover 2.

[0041] In this embodiment, by providing the positioning mechanism 3, when the protective cover 2 on the operation panel 1 rotates to open the operation hole 101 on the operation panel 1, at this time, the positioning member 32 of the positioning mechanism 3 can move relative to the operation panel 1 and engage with the protective cover 2, preventing the protective cover 2 from rotating and achieving reliable positioning of the protective cover 2. By applying the above positioning mechanism 3 to the ring main unit, reliable positioning of the protective cover 2 can be achieved after the protective cover 2 is opened, which is convenient to operate, highly practical, simplifies the operation of power maintenance personnel, releases the operator's hands to jointly rotate the operating rod, improves the operation efficiency, and also reduces the employment of maintenance personnel, thus reducing the labor cost.

[0042] In this embodiment, the positioning mechanism 3 further includes a base frame 31 fixed to the operation panel 1, and the positioning member 32 is slidably arranged on the base frame 31 in the first direction. The protective cover 2 is provided with a clamping hole 211. When the protective cover 2 opens the operation hole 101, the positioning member 32 can be inserted into the clamping hole 211.

[0043] In this embodiment, the first direction is parallel to the rotation plane of the protective cover 2. The direction shown by the a direction in the drawing is the first direction.

[0044] Specifically, when the protective cover 2 on the operation panel 1 rotates to open the operation hole 101 on the operation panel 1, at this time, the clamping hole 211 of the protective cover 2 can move to a position directly opposite to the positioning member 32. At this time, the positioning member 32 slides on the base frame 31 and can extend into the clamping hole 211, thereby achieving the clamping of the protective cover 2, locking the protective cover 2, preventing the protective cover 2 from rotating, and achieving reliable positioning of the protective cover 2.

[0045] Furthermore, the positioning mechanism 3 further includes an elastic member 33, and the elastic member 33 is arranged between one end of the positioning member 32 and the base frame 31. When the protective cover 2 opens the operation hole 101, the elastic member 33 is configured to insert the positioning member 32 into the clamping hole 211. Specifically, when the clamping hole 211 of the protective cover 2 moves to a position directly opposite to the positioning member 32, at this time, under the action of the elastic member 33, the positioning member 32 can be driven to extend into the clamping hole 211, thereby being able to lock the protective cover 2, prevent the protective cover 2 from rotating, which is convenient to operate and highly practical.

[0046] Exemplarily, the elastic member 33 is set as a spring.

[0047] Specifically, a positioning head 21 is integrally bent on one side of the protective cover 2, and the clamping hole 211 is opened on the positioning head 21.

[0048] In this embodiment, the base frame 31 is extended with a slideway 311, the positioning member 32 is slidably connected to the slideway 311, the side wall of the slideway 311 is provided with a guide groove 312, and the positioning member 32 is provided with a sliding head 3211, and the sliding head 3211 penetrates the guide groove 312 and is slidably connected to the guide groove 312. The positioning member 32 is slidably connected to the slideway 311 to ensure that the positioning member 32 strictly slides along the first direction. The elastic member 33 provides elastic force to make the positioning member 32 always have a tendency to extend out of the slideway 311. The sliding head 3211 penetrates the guide groove 312 and can extend out of the base frame 31 for the operator to move it manually. When the operator manually moves the sliding head 3211, the sliding head 3211 slides in the guide groove 312, which not only ensures that the positioning member 32 strictly slides along the extension direction of the slideway 311, but also can realize the telescopic control of the sliding head 3211.

[0049] Furthermore, a positioning abutment joint 313 is fixedly disposed in the slideway 311, and a first end of the elastic member 33 abuts against the positioning member 32, and a second end of the elastic member 33 abuts against the positioning abutment joint 313. Specifically, the setting of the positioning abutment joint 313 provides a reliable abutment space for the elastic member 33, ensuring that the elastic member 33 can reliably apply elastic force to the positioning member 32.

[0050] Exemplarily, the positioning abutment head 313 includes a fixing portion 3131 and an abutment portion 3132, wherein the fixing portion 3131 is fixed in the slideway 311, the abutment portion 3132 is fixed on the fixing portion 3131 and is provided with a first mounting hole 31321, and the second end of the elastic member 33 is fixedly plugged into the first mounting hole 31321. Specifically, a plug 331 is provided at the second end of the elastic member 33, and the elastic member 33 is fixed to the fixing portion 3131 by plugging the plug 331 into the first mounting hole 31321. Such a configuration can further ensure the reliability and stability of the installation of the elastic member 33, and prevent the elastic member 33 from accidentally falling off.

[0051] Specifically, the plug 331 and the first mounting hole 31321 are interference fit.

[0052] Exemplarily, the fixing portion 3131 is fixedly connected to the base frame 31 through a first fixing member (not shown). The fixing portion 3131 is provided with a second mounting hole 31311, the base frame 31 is provided with a third mounting hole 314, and the first fixing member penetrates the second mounting hole 31311 and the third mounting hole 314, and fixes the second mounting hole 31311 and the third mounting hole 314. Specifically, by penetrating and fixing the second mounting hole 31311 and the third mounting hole 314 with the first fixing member, reliable fixation between the fixing portion 3131 and the base frame 31 can be achieved.

[0053] Optionally, the first fixing member is set as a screw, the second mounting hole 31311 is set as a threaded hole, and the first fixing member passes through the third mounting hole 314 and is threadedly connected to the second mounting hole 31311.

[0054] Optionally, the first fixing member is set as a bolt assembly, that is, a bolt and a nut. The bolt passes through the second mounting hole 31311 and the third mounting hole 314 and is threadedly connected to the falling thread. In this embodiment, the second mounting hole 31311 can be set as a counterbore so that the head 321 of the bolt is located within the counterbore to avoid interfering with the sliding of the positioning member 32.

[0055] Exemplarily, the positioning member 32 includes a head 321 and a rod portion 322. The head 321 is slidably connected to the base frame 31. The first end of the head 321 is used for plugging into the clamping hole 211. The second end of the head 321 is connected to the rod portion 322. The elastic member 33 is located within the slideway 311 and sleeved on the rod portion 322. When the protective cover 2 rotates until the clamping hole 211 is aligned with the head 321, the elastic member 33 can drive the positioning member 32 to extend outward, so that the head 321 extends into the clamping hole 211, thereby locking the protective cover 2. The setting of the rod portion 322 is suitable for providing a reliable installation space for the elastic member 33 to ensure the stable and reliable operation of the elastic member 33 within the slideway 311.

[0056] Specifically, the abutting portion 3132 is correspondingly arranged with the rod portion 322, and the abutting portion 3132 is used for the sliding limit of the rod portion 322. When the positioning member 32 slides inward relative to the slideway 311 to the extreme position, the rod portion 322 abuts against the abutting portion 3132, thereby being able to perform sliding limit on the positioning member 32.

[0057] Optionally, the first end of the head 321 is set as a conical structure. Specifically, when the protective cover 2 rotates until it abuts against the positioning member 32, the protective cover 2 contacts the conical end face of the head 321, and the entire positioning member 32 can also be pushed inward and retracted into the slideway 311 by abutting against the conical end face. In this process, the elastic member 33 is compressed. When the protective cover 2 continues to swing until the clamping hole 211 is aligned with the slideway 311, the elastic member 33 can drive the positioning member 32 to extend out of the slideway 311 and extend into the clamping hole 211, thereby locking the protective cover 2.

[0058] Optionally, in addition to being set as a cone, the end of the head 321 facing the protective cover 2 can also be set as a spherical or ellipsoidal shape protruding toward the protective cover 2 side, and no further limitation is made here.

[0059] Specifically, the sliding head 3211 is fixedly arranged on the head 321.

[0060] Exemplarily, the head 321 and the rod portion 322 are integrally formed. In this way, the process of assembling the head 321 and the rod portion 322 separately can be avoided, and the use of connecting parts such as screws and bolts can also be further eliminated.

[0061] Exemplarily, the base frame 31 and the operation panel 1 are fixedly connected through a second fixing member (not shown). Among them, the base frame 31 is provided with a fourth mounting hole 315, and the operation panel 1 is provided with a fifth mounting hole (not shown). The second fixing member passes through the fourth mounting hole 315 and the fifth mounting hole and fixedly connects the fourth mounting hole 315 and the fifth mounting hole. Specifically, by passing through and fixing the fourth mounting hole 315 and the fifth mounting hole with the second fixing member, reliable fixation between the base frame 31 and the operation panel 1 can be achieved.

[0062] Exemplarily, the base frame 31 is bent into a U-shaped structure. The corresponding position of the U-shaped groove of the U-shaped structure is the slideway 311. Both side walls of the U-shaped structure are bent and extended outward, and the fourth mounting hole 315 is opened at the bent and extended end.

[0063] Optionally, the second fixing member is set as a screw, and the fifth mounting hole is set as a threaded hole. The first fixing member passes through the fourth mounting hole 315 and is threadedly connected with the fifth mounting hole.

[0064] In summary, for the ring main unit provided in this embodiment, by setting the positioning mechanism 3, the elastic member 33 provided between the base frame 31 and the positioning member 32 provides an elastic force to make the positioning member 32 always have a tendency to extend out of the base frame 31. When the protective cover 2 on the operation panel 1 rotates to open the operation hole 101 on the operation panel 1, at this time, the clamping hole 211 of the protective cover 2 can move to a position directly opposite to the positioning member 32. At this time, under the action of the elastic member 33, the positioning member 32 can be driven to extend into the clamping hole 211, so as to lock the protective cover 2, avoid the rotation of the protective cover 2, and realize the reliable positioning of the protective cover 2. By applying the above positioning mechanism 3 to the ring main unit, reliable positioning of the protective cover 2 can be achieved after the protective cover 2 is opened. In addition, the positioning mechanism 3 is arranged on the operation panel 1, which is equivalent to being arranged outside the ring main unit. The sliding direction of the positioning member 32 is parallel to the rotation plane of the protective cover 2. When the protective cover 2 rotates to make the clamping hole 211 directly face the positioning member 32, the positioning member 32 can be reliably inserted into the clamping hole 211 under the action of the elastic member 33 to lock the protective cover 2, which is convenient to operate and has strong practicability.

[0065] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A ring main unit, characterized in that, Comprising: An operation panel (1) provided with an operation hole (101); A protective cover (2) rotatably arranged on the operation panel (1) and used for closing or opening the operation hole (101); A positioning mechanism (3) including a positioning member (32), the positioning member (32) being movably arranged on the operation panel (1), and when the protective cover (2) opens the operation hole (101), the positioning member (32) moves relative to the operation panel (1) and engages with the protective cover (2).

2. The ring main unit according to claim 1, characterized in that, The positioning mechanism (3) further includes a base frame (31) fixed to the operation panel (1), and the positioning member (32) is slidably arranged on the base frame (31) along a first direction; The protective cover (2) is provided with a clamping hole (211), and when the protective cover (2) opens the operation hole (101), the positioning member (32) can be inserted into the clamping hole (211).

3. The ring main unit according to claim 2, characterized in that, The positioning mechanism (3) further includes an elastic member (33), and the elastic member (33) is arranged between one end of the positioning member (32) and the base frame (31); When the protective cover (2) opens the operation hole (101), the elastic member (33) is configured to make the positioning member (32) inserted into the clamping hole (211).

4. The ring main unit according to claim 3, characterized in that, The base frame (31) extends to be provided with a slideway (311), the positioning member (32) is slidably connected to the slideway (311), side walls of the slideway (311) are provided with guide grooves (312), the positioning member (32) is provided with a sliding head (3211), and the sliding head (3211) penetrates through the guide grooves (312) and is slidably connected to the guide grooves (312).

5. The ring main unit according to claim 4, characterized in that A positioning abutting head (313) is fixedly arranged in the slideway (311), a first end of the elastic member (33) abuts against the positioning member (32), and a second end of the elastic member (33) abuts against the positioning abutting head (313).

6. The ring main unit according to claim 5, characterized in that, The positioning abutting head (313) includes a fixing part (3131) and an abutting part (3132), the fixing part (3131) is fixed in the slideway (311), the abutting part (3132) is fixed on the fixing part (3131) and is provided with a first mounting hole (31321), and the second end of the elastic member (33) is fixedly inserted into the first mounting hole (31321).

7. The ring main unit according to claim 6, characterized in that, The fixing part (3131) is provided with a second mounting hole (31311), the base frame (31) is provided with a third mounting hole (314), a first fixing member penetrates through the second mounting hole (31311) and the third mounting hole (314), and fixedly connects the second mounting hole (31311) and the third mounting hole (314).

8. The ring main unit according to claim 4, characterized in that, The positioning member (32) includes a head (321) and a rod portion (322). The head (321) is slidably connected to the base frame (31). The first end of the head (321) is for being inserted into the clamping hole (211). The second end of the head (321) is connected to the rod portion (322). The elastic member (33) is located in the slideway (311) and sleeved on the rod portion (322).

9. The ring main unit according to claim 8, characterized in that, The first end of the head (321) is arranged in a conical structure.

10. The ring main unit according to claim 2, characterized in that, The base frame (31) is provided with a fourth mounting hole (315), and the operation panel (1) is provided with a fifth mounting hole. A second fixing member passes through the fourth mounting hole (315) and the fifth mounting hole, and fixedly connects the fourth mounting hole (315) and the fifth mounting hole.

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