Interlocking device for operation of grounding switch of cable chamber of medium-voltage switch cabinet

Abstract

The utility model discloses a grounding switch operation interlocking device for a cable chamber of a medium-voltage switch cabinet, which belongs to the field of grounding switch operation link rods and comprises a grounding switch body, and an opening and closing rotating shaft is arranged in the grounding switch body. A separator and a side edge base are arranged at one end of the opening and closing rotating shaft, a deflection corner piece is arranged between the separator and the side edge base, a pull rod is rotationally connected to the bottom of the deflection corner piece, and an operation switch blade is arranged at one end of the pull rod; combination and separation between the deflection corner fitting and the opening and closing rotating shaft are controlled through combination and separation of the connecting positions of the first shell and the second shell in the separator, and the structure for controlling combination and separation of the connecting positions of the first shell and the second shell can be achieved by pulling the separation operating rod in a reciprocating mode. And a clamping mechanism limited by rebounding of a spring does not need to be arranged in the separator, so that the maintenance probability of the separator is reduced, and the use reliability is improved.

Description

Technical Field

[0001] The utility model relates to the field of grounding switch operating linkage, and more specifically to a grounding switch operating interlocking device in a cable room of a medium-voltage switch cabinet. Background Art

[0002] The grounding switch is an important component in the medium voltage switchgear. It can cut off the circuit in time to ensure the safety of electrical equipment and personnel. In industrial production and daily life, the grounding switch has been widely used.

[0003] The grounding switch needs to be equipped with a corresponding operating linkage mechanism to control the opening and closing state of the grounding switch, and a locking mechanism is usually provided on the operating linkage mechanism to lock or open the transmission of the linkage. However, the locking mechanism on the existing operating linkage mechanism has a relatively complex structure and is not easy to produce and assemble. In addition, a clamping mechanism that is limited by spring rebound is usually provided inside the locking mechanism. When the spring loses its effective elasticity over time, it is easy to cause the locking mechanism to get stuck, which increases the maintenance probability of the locking mechanism. Therefore, we propose a medium-voltage switch cabinet cable room grounding switch operation interlocking device to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an operating interlock device for the grounding switch in the cable room of a medium-voltage switch cabinet, which controls the connection and separation between the deflection angle piece and the opening and closing rotating shaft by means of the connection and separation of the connection between the shell one and the shell two inside the separator, and the structure for controlling the connection and separation of the connection between the shell one and the shell two can be achieved by reciprocating the separation operating lever, the structure is simple, and there is no need to set a clamping mechanism that relies on spring rebound to limit the position inside the separator, which reduces the maintenance probability of the separator and improves the reliability of use.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A medium-voltage switch cabinet cable room grounding switch operation interlocking device, comprising a grounding switch body, an opening and closing rotating shaft is arranged inside the grounding switch body, a separator and a side base are arranged at one end of the opening and closing rotating shaft, and a deflection angle piece is arranged between the separator and the side base, a pull rod is rotatably connected to the bottom of the deflection angle piece, an operating knife is arranged at one end of the pull rod, and an arc-shaped piece on one side of the operating knife is rotatably connected to one end of the pull rod;

[0009] The separator includes a shell one, a rotating chamber is opened inside the shell one, a shell two is rotatably connected inside the rotating chamber, a rotating plate is rotatably connected to one side of the shell two, a separation operating rod is fixedly welded to the top of the rotating plate, a redundant chamber is opened at the center position inside the shell two, one end of the opening and closing shaft passes through the interior of the rotating plate and is fixedly installed at the center of the redundant chamber.

[0010] Furthermore, a plurality of slide grooves connected to the interior of the redundant cavity are provided inside the second shell, and telescopic rods are slidably connected to the interior of a plurality of the slide grooves, and a plurality of arc grooves are provided on the rotating plates corresponding to the positions of the plurality of slide grooves, and connecting columns are fixedly welded on a plurality of the telescopic rods, and one end of the connecting column is clamped with the interior of the corresponding arc groove.

[0011] Furthermore, a plurality of insertion holes are provided on the inner wall of the rotating cavity corresponding to the positions of the plurality of sliding grooves, and one end of the telescopic rod is snap-connected with the inside of the corresponding insertion hole.

[0012] Furthermore, a circular hole is opened inside the shell, one end of the side base is rotatably connected inside the circular hole, the deflection angle piece is sleeved on the outer side of one end of the side base, and the deflection angle piece is fixedly installed on one side of the shell by screws.

[0013] Furthermore, the length of the telescopic rod is equal to the length of the sliding groove.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] In this solution, a separator is set up, and the connection and separation of the deflection angle piece and the opening and closing shaft are controlled by utilizing the connection and separation of the connection between the shell one and the shell two inside. The structure for controlling the connection and separation of the connection between the shell one and the shell two can be achieved by reciprocating the separation operating lever. The structure is simple, and there is no need to set a clamping mechanism that relies on spring rebound to limit the position inside the separator, which reduces the probability of maintenance of the separator and improves the reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A schematic diagram of the structure of the enlarged part of the middle area;

[0019] Figure 3 This is a schematic diagram of the separator splitting structure of the utility model;

[0020] Figure 4It is a schematic diagram of the internal structure of the second shell of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1. Earthing switch body; 101. Opening and closing shaft; 2. Separator; 3. Side base; 4. Deflection angle piece; 5. Pull rod; 6. Operating knife; 7. Shell 1; 701. Rotating cavity; 702. Socket; 703. Round hole; 8. Shell 2; 801. Redundant cavity; 802. Slide groove; 9. Rotating plate; 901. Arc groove; 10. Telescopic rod; 1001. Connecting column; 11. Separation operating rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 4 , an operating interlocking device for a grounding switch in a cable room of a medium-voltage switch cabinet, comprising a grounding switch body 1, an opening and closing rotating shaft 101 is arranged inside the grounding switch body 1, a separator 2 and a side base 3 are arranged at one end of the opening and closing rotating shaft 101, and a deflection angle piece 4 is arranged between the separator 2 and the side base 3, a pull rod 5 is rotatably connected to the bottom of the deflection angle piece 4, an operating knife 6 is arranged at one end of the pull rod 5, and an arc-shaped piece on one side of the operating knife 6 is rotatably connected to one end of the pull rod 5;

[0026] The separator 2 includes a shell 1 7, a rotating chamber 701 is provided inside the shell 1 7, a shell 2 8 is rotatably connected inside the rotating chamber 701, a rotating plate 9 is rotatably connected to one side of the shell 2 8, a separation operating rod 11 is fixedly welded to the top of the rotating plate 9, a redundant chamber 801 is provided at the center position inside the shell 2 8, one end of the opening and closing shaft 101 passes through the inside of the rotating plate 9 and is fixedly installed at the center of the redundant chamber 801; a plurality of slide grooves 802 connected to the inside of the redundant chamber 801 are provided inside the shell 2 8, and a plurality of slide grooves 802 are slidably connected to the inside of the telescopic rods 10, corresponding to the plurality of slide grooves 802 A plurality of arc grooves 901 are provided on the rotating piece 9 at the position, and a plurality of telescopic rods 10 are fixedly welded with connecting columns 1001, and one end of the connecting column 1001 is snap-fitted with the inside of the corresponding arc groove 901; a plurality of plug holes 702 are provided on the inner wall of the rotating cavity 701 at the positions corresponding to the plurality of slide grooves 802, and one end of the telescopic rod 10 is snap-fitted with the inside of the corresponding plug holes 702; a circular hole 703 is also provided inside the shell 7, and one end of the side base 3 is rotatably connected inside the circular hole 703, and the deflection angle piece 4 is sleeved on the outside of one end of the side base 3, and the deflection angle piece 4 is fixedly installed with one side of the shell 7 by screws.

[0027] The operating principle of the grounding switch operating interlock device in the cable room of this medium voltage switch cabinet is:

[0028] First, the grounding switch body 1 is installed inside the cable room of the medium-voltage switch cabinet, and then the side base 3 is installed on the side wall of the cable room of the medium-voltage switch cabinet, and the operating knife 6 is installed on the outer wall of the medium-voltage switch cabinet. During the installation process, an arc groove is opened on the side wall of the medium-voltage switch cabinet at the position of the separation operating rod 11, so that one end of the separation operating rod 11 extends to the outer side of the side wall of the medium-voltage switch cabinet through the arc groove;

[0029] When the earthing switch body 1 needs to be operated to open and close, first, the separation operating lever 11 is pulled to drive the rotating piece 9 on the separator 2 to rotate on the opening and closing shaft 101. At this time, since a plurality of telescopic rods 10 are clamped in the arc groove 901 on the rotating piece 9 through the connecting column 1001, and the telescopic rods 10 are slidably connected in the sliding groove 802, the rotating piece 9 is rotated under the influence of the structure of the arc groove 901 to cause a plurality of telescopic rods 10 to be ejected from the inside of the shell 2 8 and inserted into the corresponding jacks 702. At this time, the shell 1 7 and the shell 2 8 are combined. Then, the operating knife 6 is pulled up and down to pull the pull rod 5, and the pulling makes the deflection angle piece 4 deflect. At this time, the shell 1 7, the shell 2 8 and the opening and closing shaft 101 can be driven to rotate back and forth, and then the transmission effect of the opening and closing shaft 101 causes the earthing switch body 1 to achieve the opening and closing state.

[0030] After the opening and closing operation of the grounding switch body 1 is completed, the separation operating lever 11 is pulled in the opposite direction to drive the rotating piece 9 on the separator 2 to rotate in the opposite direction on the opening and closing shaft 101. At this time, the plurality of telescopic rods 10 inside the shell 2 8 can be retracted into the shell 2 8 to realize the separation process between the shell 1 7 and the shell 2 8. At this time, although the operating knife 6 can drive the shell 1 7 to rotate, it cannot drive the synchronous rotation of the shell 2 8, so that the opening and closing shaft 101 can be ineffectively controlled, thereby avoiding the opening and closing process of the grounding switch body 1 due to misoperation, thereby improving the safety of use.

[0031] Embodiment 2:

[0032] In view of the above embodiment 1, for further description, refer to Figure 4 , the length of the telescopic rod 10 is equal to the length of the slide slot 802.

[0033] By making the length of the telescopic rod 10 equal to the length of the slide slot 802, it can be ensured that the telescopic rod 10 can be fully retracted into the housing 8, while avoiding interference at the connection between the opening and closing shaft 101 and the redundant cavity 801 due to the excessive length of the telescopic rod 10.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An operating interlock device for a grounding switch in a cable room of a medium voltage switch cabinet, comprising a grounding switch body (1), characterized in that: An opening and closing rotating shaft (101) is arranged inside the grounding switch body (1), a separator (2) and a side base (3) are arranged at one end of the opening and closing rotating shaft (101), and a deflection angle piece (4) is arranged between the separator (2) and the side base (3), a pull rod (5) is rotatably connected to the bottom of the deflection angle piece (4), an operating knife (6) is arranged at one end of the pull rod (5), and an arc-shaped piece on one side of the operating knife (6) is rotatably connected to one end of the pull rod (5); The separator (2) comprises a first shell (7), a rotating chamber (701) is provided inside the first shell (7), the second shell (8) is rotatably connected inside the rotating chamber (701), a rotating plate (9) is rotatably connected to one side of the second shell (8), a separation operating rod (11) is fixedly welded to the top of the rotating plate (9), a redundant chamber (801) is provided at the center position inside the second shell (8), and one end of the opening and closing shaft (101) passes through the interior of the rotating plate (9) and is fixedly installed at the center of the redundant chamber (801).

2. The medium voltage switch cabinet cable room grounding switch operation interlocking device according to claim 1, characterized in that: The second housing (8) is provided with a plurality of slide grooves (802) in communication with the interior of the redundant cavity (801); a plurality of the slide grooves (802) are slidably connected with telescopic rods (10); a plurality of arc grooves (901) are provided on the rotating sheet (9) at positions corresponding to the plurality of slide grooves (802); a plurality of the telescopic rods (10) are fixedly welded with connecting columns (1001); one end of the connecting column (1001) is snap-fitted with the interior of the corresponding arc groove (901).

3. The medium voltage switch cabinet cable room grounding switch operation interlocking device according to claim 2, characterized in that: A plurality of insertion holes (702) are provided on the inner wall of the rotating cavity (701) at positions corresponding to the plurality of sliding grooves (802), and one end of the telescopic rod (10) is snap-fitted into the corresponding interior of the insertion hole (702).

4. The medium voltage switch cabinet cable room grounding switch operation interlocking device according to claim 1, characterized in that: A circular hole (703) is also provided inside the shell one (7), one end of the side base (3) is rotatably connected inside the circular hole (703), the deflection angle piece (4) is sleeved on the outside of one end of the side base (3), and the deflection angle piece (4) is fixedly mounted to one side of the shell one (7) by means of screws.

5. The medium voltage switch cabinet cable room grounding switch operation interlocking device according to claim 3, characterized in that: The length of the telescopic rod (10) is equal to the length of the sliding groove (802).

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