CN215933428U

CN215933428U - Lower door hard interlocking mechanism of ring main unit and ring main unit

Info

Publication number: CN215933428U
Application number: CN202122276594.7U
Authority: CN
Inventors: 赵永和; 仇翰宇
Original assignee: Zhejiang Juli Electrical Co ltd
Current assignee: Zhejiang Juli Electrical Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-03-01
Anticipated expiration: 2031-09-17

Abstract

When the lower door needs to be locked, the second connecting rod rotates anticlockwise around the rotating center of the second connecting rod under the action of external force so as to drive the first connecting rod to move upwards, and the first connecting rod pulls the third connecting rod to rotate anticlockwise around the rotating center of the third connecting rod so as to enable the plug pin to be inserted into the jack of the lower door and be matched with the lower door for locking. Because the respective rotation centers of the second connecting rod and the third connecting rod are positioned on the cabinet body or the mechanism, the guide hole does not need to be arranged on the first connecting rod like the prior art, and the structure of the first connecting rod is not damaged and is not easy to deform. The width direction of second connecting rod and third connecting rod extends along the height of cabinet body, and when operating personnel under the condition that the lower door is not closed tightly, when the hard interlocking device of drive door moved down, the width direction of dull and stereotyped can receive the extrusion effect, because dull and stereotyped width will be far more than its thickness, compares with prior art, and second connecting rod and third connecting rod are more difficult to warp like this.

Description

Lower door hard interlocking mechanism of ring main unit and ring main unit

Technical Field

The utility model relates to the technical field of ring main units, in particular to a lower door hard interlocking mechanism of a ring main unit and the ring main unit.

Background

Along with rapid development of economy, urban high-rise buildings and large public buildings are emerging continuously, the requirement on power supply reliability is higher and higher, many users require two or more than two power supplies to supply power, the power supply reliability can be effectively improved, the power supply continuity is ensured by establishing a distribution network mainly based on a ring network structure, the influences of power distribution equipment faults and maintenance power failure are reduced to the minimum, and the ring network cabinet is used as important equipment in a ring network operation mode, and the application of the ring network cabinet in distribution network transformation is also wider and wider.

In order to ensure the maintenance safety, a hard interlocking mechanism is arranged between the grounding switch and the lower door of the prior ring main unit, in order to avoid the fuse tube 07, as shown in fig. 5 and 6, the lower door hard interlocking mechanism includes a second link 02 and a third link 03 which are respectively arranged at the upper and lower sides and are horizontally arranged, and a first connecting rod 01 which is arranged between the second connecting rod 02 and the third connecting rod 03 and is vertically arranged, the first connecting rod 01 is used as an extension bar and is suitable for connecting the second connecting rod 02 and the third connecting rod 03, a bolt 05 which can be inserted into a jack of the lower door 04 in a matching way is arranged at the end part of the third connecting rod 03 far away from the first connecting rod, because the hard interlocking device of lower door wholly reciprocates along vertical direction, and length is longer, consequently need set up guide structure, guide structure is including the shaping on first connecting rod 01, along the vertical guiding hole 06 that sets up to and pass guiding hole 06, with cabinet body curb plate fixed connection's bolt (not drawn in the figure). In use, it often happens that the lower door 04 is not tightly closed (the jack is not aligned with the latch pin 05), the operator drives the lower door hard interlock mechanism to move downwards, because the bolt 05 is pressed against the top of the lower door 04 and can not move downwards, each connecting rod can be stressed by extrusion force, because the guide hole 06 formed on the first connecting rod 01 reduces the strength thereof, causing local stress concentration, the first connecting rod 01 is more easily deformed under the extrusion force, in addition, as shown in fig. 6, for convenience of processing, the first link 01, the second link 02 and the third link 03 are integrally bent and connected, so that the second link 02 and the third link 03 having a flat plate shape are horizontally arranged, the thickness direction of the flat plate link is the same as the direction of the pressing pressure F1, this is more easily deformed, resulting in the need to replace the hard interlock mechanism as a whole, increasing maintenance costs.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the defects that the lower door hard interlocking mechanism in the prior art is easy to deform and increases the maintenance cost, so as to provide a lower door hard interlocking mechanism of a ring main unit, which is not easy to deform and has a long service life, and a ring main unit having the lower door hard interlocking mechanism.

Therefore, the utility model provides a lower door hard interlocking mechanism of a ring main unit, which comprises a first connecting rod, a second connecting rod and a third connecting rod, wherein the first connecting rod is provided with a first end and a second end which are respectively arranged at the two ends of the first connecting rod in the length direction; the second connecting rod and the third connecting rod are rotatably installed on the cabinet body, the second connecting rod is provided with a driving end and a third end which are respectively arranged at two ends of a rotating center of the second connecting rod, the third end is suitable for being rotatably connected with the first end, the third connecting rod is provided with a bolt end and a fourth end which are respectively arranged at two ends of the rotating center of the third connecting rod, a bolt which is in adaptive splicing with a lower door jack is arranged at the bolt end, and the fourth end is suitable for being connected with the second end.

The second connecting rod and the third connecting rod are flat plates, and the width direction of the flat plates extends along the height of the cabinet body.

The first connecting rod is integrally formed.

The first connecting rod comprises at least one connecting rod part and an adjusting rod which can extend and retract relative to the connecting rod part.

The connecting rod part is provided with a threaded hole, and the adjusting rod is provided with a screw rod part in threaded connection with the threaded hole.

The connecting rod portion has two, two connecting rod portion respectively with correspond the second connecting rod with the third connecting rod links to each other, it locates two to adjust the pole between the connecting rod portion, it has respectively with two first screw rod portion and the second screw rod portion that the connecting rod portion corresponds threaded connection.

And the adjusting rod is also provided with a locking nut in threaded connection with the adjusting rod.

The connecting rod part is provided with first through holes which are arranged at intervals along the height direction of the connecting rod part, and/or the adjusting rod is provided with second through holes which are arranged at intervals along the height direction of the adjusting rod, and the connecting rod part is fixedly connected with the adjusting rod after the bolt assembly sequentially penetrates through the first through holes and the second through holes.

The bolt with the third connecting rod rotates and links to each other, the third end of second connecting rod is equipped with rather than the actuating lever that rotates and link to each other, the actuating lever is suitable for the drive the second connecting rod rotates.

The utility model also provides a ring main unit, which comprises the lower door hard interlocking mechanism of the ring main unit.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a lower door hard interlocking mechanism of a ring main unit, which comprises a first connecting rod, a second connecting rod and a third connecting rod, wherein the second connecting rod and the third connecting rod are rotatably arranged on a cabinet body, the second connecting rod is provided with a driving end and a third end which are respectively arranged at two ends of a rotating center of the second connecting rod, the third end is suitable for being rotatably connected with the first end of the first connecting rod, the third connecting rod is provided with a bolt end and a fourth end which are respectively arranged at two ends of the rotating center of the third connecting rod, a bolt which is in adaptive insertion connection with a lower door jack is arranged at the bolt end, and the fourth end is suitable for being connected with the second end of the first connecting rod. When needs carry out the locking to the lower door, the second connecting rod is rotated around its rotation center anticlockwise under the exogenic action to drive first connecting rod rebound, first connecting rod pulling third connecting rod rotates around its rotation center anticlockwise, thereby makes the bolt insert in the jack of lower door, with lower door cooperation locking. Because the respective rotation centers of the second connecting rod and the third connecting rod are positioned on the cabinet body or the mechanism, namely the rotation tracks of the second connecting rod and the third connecting rod are limited, the guide hole is not required to be arranged on the first connecting rod in the prior art, so that the structure of the first connecting rod is not damaged and is not easy to deform, and the service life is prolonged.

2. According to the lower door hard interlocking mechanism of the ring main unit, the second connecting rod and the third connecting rod are flat plates, the width direction of each flat plate extends along the height of the ring main unit, namely the flat plates are vertically arranged, when an operator drives the door hard interlocking mechanism to move downwards under the condition that the lower door is not closed tightly, the width direction of each flat plate can be stressed by extrusion force, and the width of each flat plate is far larger than the thickness of the flat plate.

3. The utility model provides a lower door hard interlocking mechanism of a ring main unit, wherein a first connecting rod comprises: the two connecting rod parts are respectively connected with the corresponding second connecting rod and the third connecting rod; the adjusting rod is arranged between the two connecting rod parts and is provided with a first screw rod part and a second screw rod part which are respectively in corresponding threaded connection with the two connecting rod parts. Through making the regulation pole flexible to can adjust the length of first connecting rod, with the looped netowrk cabinet that is applicable to different producers production, reduce the high accuracy requirement to cabinet body lower door.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a ring main unit according to the present invention;

fig. 2 is a perspective view of a lower door hard interlocking mechanism of the ring main unit;

FIG. 3 is an exploded view of the first link;

FIG. 4 is a perspective view of the second or third link;

fig. 5 is a perspective view of a ring main unit in the prior art;

fig. 6 is a perspective view of a lower door hard interlocking mechanism of a ring main unit in the prior art.

Description of reference numerals: 01. a first link; 02. a second link; 03. a third link; 04. a lower door; 05. a bolt; 06. a guide hole; 07. a fuse tube;

1. a first link; 11. a first end; 12. a second end; 13. a link section; 14. adjusting a rod; 15. a first screw section; 16. a second screw section; 17. locking the nut; 2. a second link; 21. a driving end; 22. a third end; 3. a third link; 31. a plug end; 32. a fourth end; 4. a cabinet body; 5. a lower door; 6. a bolt; 7. a drive rod.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a ring main unit, which comprises a lower door hard interlocking mechanism, as shown in fig. 1 and 2, wherein the lower door hard interlocking mechanism comprises a first connecting rod 1, a second connecting rod 2 and a third connecting rod 3.

First connecting rod 1, along vertical locate in cabinet body 4, it has first end 11 and second end 12 of locating length direction both ends separately, as shown in fig. 2 and 3, first connecting rod 1 includes: two link portions 13 connected to the corresponding second link 2 and third link 3, respectively; an adjusting rod 14, which is arranged between the two connecting rod parts 13 and is provided with a first screw rod part 15 and a second screw rod part 16 which are respectively in corresponding threaded connection with the two connecting rod parts 13; and the locking nut 17 is suitable for locking and connecting the adjusting rod 14 and the connecting rod part 13. In this embodiment, one of the first screw portion 15 and the second screw portion 16 is a left-handed screw, and the other is a right-handed screw. The body of the first link 1 is cylindrical.

In an alternative embodiment, the first screw portion 15 and the second screw portion 16 have the same screw direction.

As an alternative embodiment, the link portion 13 has first through holes (not shown) spaced apart along the height direction thereof, the adjustment lever 14 has second through holes (not shown) spaced apart along the height direction thereof, and the pin assembly passes through the first through holes and the second through holes in sequence to fixedly connect the link portion 13 and the adjustment lever 14. The latch assembly is assembled with the first and second through holes at different height positions, so that the length of the entire first link 1 can be adjusted.

As an alternative embodiment, the first connecting rod 1 is integrally formed, i.e. the length of the first connecting rod 1 is not adjustable.

The second connecting rod 2 and the third connecting rod 3 are both rotatably mounted on the cabinet 4, as shown in fig. 2, the second connecting rod 2 has a driving end 21 and a third end 22 respectively disposed at two ends of a rotation center a (the rotation center a is located on the mechanism), the third end 22 is adapted to be rotatably connected with the first end 11, the third connecting rod 3 has a plug end 31 and a fourth end 32 respectively disposed at two ends of a rotation center B (the rotation center B is located on the cabinet), the plug end 31 is provided with a plug 6 adapted to be plugged into a jack of the lower door 5, and the fourth end 32 is adapted to be connected with the second end 12. In this embodiment, as shown in fig. 4, the second link 2 and the third link 3 are both flat plates, and the width direction of the flat plates extends along the height of the cabinet 4. The bolt 6 is rotatably connected with the third connecting rod 3; the third end 22 of the second connecting rod 2 is provided with a driving rod 7 which is connected with the second connecting rod in a rotating way, and the driving rod 7 is suitable for driving the second connecting rod 2 to rotate.

It should be noted that, in this embodiment, the ring main unit is provided with two sets of lower door hard interlocking mechanisms, one set of which is suitable for interlocking between the earthing switch and the lower door, and the other set of which is suitable for interlocking between the upper door and the lower door of the cabinet body.

According to the lower door hard interlocking mechanism of the ring main unit, when the lower door 5 needs to be locked, the second connecting rod 2 rotates anticlockwise around the rotating center of the second connecting rod under the action of external force, so that the first connecting rod 1 is driven to move upwards, the first connecting rod 1 further pulls the third connecting rod 3 to rotate anticlockwise around the rotating center of the third connecting rod, and the bolt 6 is inserted into the jack of the lower door 5 and is matched with the lower door 5 to be locked. Because the respective rotation centers of the second connecting rod 2 and the third connecting rod 3 are positioned on the cabinet body 4 or the mechanism, that is, the rotation tracks of the second connecting rod 2 and the third connecting rod 3 are limited, there is no need to provide a guide hole on the first connecting rod like the prior art, and thus the structure of the first connecting rod is not damaged and is not easy to deform, and the service life is prolonged.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The utility model provides a hard interlocking device of lower door of looped netowrk cabinet which characterized in that includes:

a first link (1) having a first end (11) and a second end (12) disposed at opposite ends of the first link in a longitudinal direction thereof;

second connecting rod (2) and third connecting rod (3), all rotate and install on the cabinet body (4), second connecting rod (2) have drive end (21) and third end (22) of locating its rotation center both ends separately, third end (22) be suitable for with first end (11) rotate and link to each other, third connecting rod (3) have bolt end (31) and fourth end (32) of locating its rotation center both ends separately, bolt end (31) department is equipped with bolt (6) of pegging graft with lower door (5) jack adaptation, fourth end (32) be suitable for with second end (12) link to each other.

2. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 1, wherein the second connecting rod (2) and the third connecting rod (3) are both flat plates, and the width direction of the flat plates extends along the height of the main body (4).

3. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 1 or 2, wherein the first connecting rod (1) is integrally formed.

4. The lower door hard interlocking mechanism of the ring main unit according to claim 1 or 2, wherein the first link (1) comprises at least one link portion (13) and an adjusting rod (14) which can be extended and retracted relative to the link portion (13).

5. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 4, wherein the connecting rod portion (13) is provided with a threaded hole, and the adjusting rod (14) is provided with a screw portion in threaded connection with the threaded hole.

6. The lower door hard interlocking mechanism of the ring main unit according to claim 5, wherein there are two link portions (13), two link portions (13) are respectively connected to the second link (2) and the third link (3), and the adjusting rod (14) is disposed between the two link portions (13) and has a first screw portion (15) and a second screw portion (16) respectively in threaded connection with the two link portions (13).

7. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 6, wherein the adjusting rod (14) is further provided with a locking nut (17) in threaded connection therewith.

8. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 4, wherein the link portion (13) has first through holes spaced along the height direction thereof, and/or the adjusting rod (14) has second through holes spaced along the height direction thereof, and the pin assembly passes through the first through holes and the second through holes in sequence to fixedly connect the link portion (13) and the adjusting rod (14).

9. The lower door hard interlocking mechanism of the ring main unit as claimed in claim 1, wherein the latch (6) is rotatably connected with the third connecting rod (3), the third end (22) of the second connecting rod (2) is provided with a driving rod (7) rotatably connected therewith, and the driving rod (7) is adapted to drive the second connecting rod (2) to rotate.

10. A ring main unit, comprising the hard interlocking mechanism for the lower door of the ring main unit as claimed in any one of claims 1 to 9.