Telescopic mechanism and locking 10kv switch cabinet grounding knife switch operating mechanism device

Abstract

The utility model discloses a telescopic mechanism and locking 10KV switch cabinet ground knife switch operating mechanism device, including accommodating piece, telescopic unit, the telescopic unit includes connecting rod, extruding head and cam assembly, the telescopic unit sets up in accommodating space A to and, fixed block, be provided with first connecting hole and second connecting hole on the fixed block, operating lever, the operating lever includes main part, the connector of setting up in the main part one end and setting up in the main part another end's multilateral head, the initiative rod includes initiative head, connecting portion, limit head and second elastic part. The utility model has the advantages of: the telescopic unit sets up in accommodating space A, and the telescopic unit is equivalent with extruding head convex part height, when connecting rod force makes extruding head in the accommodating piece's accommodating space A to the inboard wall of accommodating piece movement, gyro wheel moves to the inclined plane, and the limit post is from first through -hole and stretches out, makes operating handle not to be inserted operating lever.

Description

Technical Field

[0001] This utility model relates to the field of 10KV high-voltage switchgear maintenance devices, and in particular to a telescopic mechanism and a locking mechanism for operating the grounding switch of a 10KV switchgear. Background Technology

[0002] During the maintenance of 10kV high-voltage switchgear, the grounding switch interlocking mechanism is operated. The grounding switch can only be disengaged when the lower rear door of the high-voltage switchgear is closed and the interlocking component is pressed inward. This interlock with the lower rear door prevents accidental entry into a live compartment. During preventative testing of a 10kV three-position load switchgear, the grounding switch must be operated with the cable compartment door open. In this case, a tool is needed to release the door lock. If the lock is not released, the grounding switch operating port can still be opened, allowing the operating rod to be inserted to operate the grounding switch interlocking mechanism, potentially damaging the interlocking mechanism.

[0003] With the cable compartment door of the high-voltage switchgear open, after opening the operating hole of the grounding switch, the grounding switch opening and closing operating rod is mechanically locked, and the operating handle cannot be inserted into the polygonal end of the operating rod, making operation impossible. This device has a simple structure, reliable operation, and convenient operation, requiring no human intervention. It solves the problem of damage to the grounding switch interlocking mechanism caused by operating the grounding switch with the cable compartment door open. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is: the operating handle of the purely mechanically locked ground switch opening and closing operating rod cannot be inserted into the polygonal end of the operating rod, making it impossible to operate.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a telescopic mechanism, which includes a receiving member. The receiving member has a structure with a central groove and a side wall connected to the groove. A first through hole is provided on the side wall, and the central groove is a receiving space A.

[0006] The telescopic unit includes a connecting rod, an extrusion head, and a cam assembly. One end of the connecting rod is movably connected to one end of the extrusion head. The end of the extrusion head away from the connecting rod is an outwardly protruding inclined surface. The extrusion head is movably connected to the cam assembly. The telescopic unit is disposed within the accommodating space A.

[0007] In a preferred embodiment of the telescopic mechanism of this utility model: the cam assembly includes a limiting post disposed on one side of the limiting block and a roller disposed on the other side of the limiting block. A first elastic element is sleeved on the limiting post, and the diameter of the first elastic element is larger than the diameter of the first through hole.

[0008] In a preferred embodiment of the telescopic mechanism of this utility model: the height of the telescopic unit is equivalent to the height of the protruding part of the extrusion head.

[0009] The beneficial effects of this utility model are as follows: the telescopic unit is set in the accommodating space A, and the telescopic unit is at the same height as the protruding part of the extrusion head. When the connecting rod is subjected to force, the extrusion head moves towards the inner wall of the accommodating part in the accommodating space A of the accommodating part. The roller moves to the inclined surface, and the limiting post extends out from the first through hole, so that the operating handle cannot insert the operating rod.

[0010] The technical problem to be solved by this utility model is: when operating the grounding switch with the cable compartment door open, a tool is needed to unlock the cabinet door. If the lock is not unlocked, the grounding switch operating hole can still be opened and the operating rod can be inserted to operate the grounding switch interlocking mechanism, which will damage the grounding switch interlocking mechanism.

[0011] In a preferred embodiment of the interlocking 10kV switchgear grounding switch operating mechanism of this utility model: a fixing block is provided with a first connecting hole and a second connecting hole, the first connecting hole being located at one end of the fixing block and the second connecting hole being located at the other end of the fixing block.

[0012] The operating lever includes a main body, a connector at one end of the main body, and a multi-faceted head at the other end of the main body. The connector is movably connected to the first connecting hole.

[0013] An active rod is disposed within the fixed block. The active rod includes an active head, a connecting part, a limiting head, and a second elastic element. The active head, connecting part, and limiting head are arranged sequentially. The second elastic element is sleeved on the limiting head. The active head is movably connected to the second connecting hole.

[0014] In a preferred embodiment of the interlocking 10KV switchgear grounding switch operating mechanism of this utility model: the fixing block is C-shaped, and a connecting hole is provided on the C-shaped side wall of the fixing block.

[0015] In a preferred embodiment of the 10KV switchgear grounding switch operating mechanism of this utility model: a through groove is provided inside the main body, and the connecting rod is movably connected to the through groove.

[0016] In a preferred embodiment of the 10KV switchgear grounding switch operating mechanism of this utility model: an elastic limiting member is provided on the connector head, and the elastic limiting member is movably connected to the active rod.

[0017] The multi-faceted head includes a receiving groove and a second through hole. The receiving groove is located at the end of the multi-faceted head away from the connector, and the second through hole is located on the side wall of the multi-faceted head.

[0018] In a preferred embodiment of the interlocking 10KV switchgear grounding switch operating mechanism of this utility model: a receiving groove is provided at the end of the polygonal head away from the connector, and the receiving element is disposed inside the polygonal head.

[0019] In a preferred embodiment of the 10KV switchgear grounding switch operating mechanism of this utility model: the connecting part includes a first limiting block and a second limiting block, the diameter of the first limiting block is larger than the diameter of the second connecting hole, and the diameter of the second limiting block is larger than the diameter of the first connecting hole.

[0020] In a preferred embodiment of the interlocking 10KV switchgear grounding switch operating mechanism of this utility model: the limiting head is provided with a connecting groove, and the elastic limiting member is movably connected to the connecting groove.

[0021] The beneficial effects of this utility model are as follows: A second elastic element is assembled between the connection between the active rod and the operating rod. When the switch is running normally, the high-voltage switch cabinet is closed, the cabinet door is pressed on the active rod, the second elastic element is in a compressed state, the roller of the cam assembly is at the critical position between the inclined section and the horizontal section, and the first elastic element in the cam assembly is in a natural state. When the rear cabinet door acting on the active rod is moved, the second elastic element naturally rebounds, the active element drives the connecting rod to move, thereby driving the extrusion head to move. The roller moves to the inclined surface of the extrusion head, driving the cam assembly to move, protruding into the polygonal head of the operating rod. The ground knife operating handle cannot be inserted into the polygonal head end of the operating rod, thus achieving locking. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0023] Figure 1 The structure of a locking mechanism for the grounding switch of a 10kV switchgear is shown. Figure 1 ;

[0024] Figure 2 The structure of a locking mechanism for the grounding switch of a 10kV switchgear is shown. Figure 2 ;

[0025] Figure 3 A structural diagram of the control lever is shown;

[0026] Figure 4 A cross-sectional view of the control lever is shown;

[0027] Figure 5 A structural diagram of the driving component, the control lever, and the receiving component is shown.

[0028] Figure 6 A cross-sectional view of a locking mechanism for a 10kV switchgear grounding switch is shown. Figure 1 ;

[0029] Figure 7 A cross-sectional view of a locking mechanism for a 10kV switchgear grounding switch is shown. Figure 2 ;

[0030] Figure 8 A partially enlarged view of the telescopic unit is shown. Detailed Implementation

[0031] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0032] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0033] Example 1

[0034] Reference Figure 5 This embodiment provides a telescopic mechanism, including a receiving member 5. The receiving member 5 has a structure with a central groove and a sidewall connected to the groove. A first through hole 51 is provided on the sidewall, and the central groove is a receiving space A. In this embodiment, the receiving member 5 can be C-shaped or have various shapes with a groove and four sidewalls. The function of the receiving member 5 is to allow the telescopic unit 3 to slide in its internal receiving space A. Its shape is not specifically described.

[0035] The telescopic unit 3 includes a connecting rod 31, an extrusion head 32, and a cam assembly 33. One end of the connecting rod 31 is movably connected to one end of the extrusion head 32. In this embodiment, the connection between the connecting rod 31 and the extrusion head 32 can be welded or threaded, which will not be described in detail here. The end of the extrusion head 32 away from the connecting rod 31 is an outwardly protruding inclined surface 321, that is, the end of the extrusion head 32 away from the connecting rod 31 has a protruding inclined extension. The extrusion head 32 is movably connected to the cam assembly 33. The telescopic unit 3 is disposed in the accommodating space A.

[0036] When in use, the connecting rod 31 is subjected to force at one end, causing the extrusion head 32 to slide within the accommodating space A of the accommodating member 5. When the cam assembly 33 contacts the inclined surface 321, the cam assembly 33 extends out from the first through hole 51, thereby preventing the operator's ground knife operating handle from being inserted into the polygonal end of the operating rod.

[0037] Example 2

[0038] Reference Figures 5-8 As an optional embodiment, the cam assembly 33 includes a limiting post 331 disposed on one side of the limiting block 332 and a roller 334 disposed on the other side of the limiting block 332. A first elastic element 333 is sleeved on the limiting post 331. The diameter of the first elastic element 333 is larger than the diameter of the first through hole 51, and the width of the limiting block 332 is larger than the diameter of the first through hole 51. When the roller 334 rolls on the inclined surface 321, the first elastic element 333 generates a pushing force on the limiting block 332. At this time, the limiting post 331 extends out of the first through hole 51, which is the state when the rear cabinet door is moved open. In this state, the floor knife operating handle cannot be inserted into the multi-faceted end of the operating rod, thus achieving locking.

[0039] Preferably, the height H of the telescopic unit 3 is equivalent to the height H of the protrusion of the extrusion head 32, that is, when the cam assembly 33 moves on the horizontal surface of the extrusion head 32, the top surface of the cam assembly 33 is at the same horizontal height as the top surface of the receiving member 5.

[0040] In use, the height H of the telescopic unit 3 is equivalent to the height H of the protrusion of the extrusion head 32. When the cam assembly 33 moves on the horizontal surface of the extrusion head 32, the top surface of the cam assembly 33 is at the same horizontal height as the top surface of the accommodating member 5. At this time, the connecting rod 31 is under force. When the connecting rod 31 is not under force, the connecting rod 31 causes the extrusion head 32 to move outside the accommodating space A of the accommodating member 5. At this time, when the roller 334 rolls on the inclined surface 321, the limiting post 331 extends out of the first through hole 51.

[0041] Example 3

[0042] Reference Figures 1 to 8 This is the third embodiment of the present invention. This embodiment further provides a device for interlocking the operating mechanism of a 10kV switchgear grounding switch, comprising: a fixing block 1, on which a first connecting hole 12 and a second connecting hole 13 are provided. The first connecting hole 12 is located at one end of the fixing block 1, and the second connecting hole 13 is located at the other end of the fixing block 1. The main function of the fixing block 1 is to fix the position of the device.

[0043] The operating lever 2 includes a main body 21, a connector 22 disposed at one end of the main body 21, and a polygonal head 23 disposed at the other end of the main body 21. The connector 22 is movably connected to the first connecting hole 12. The polygonal head 23 of the operating lever 2 is a polygonal end for the operator to twist. In this embodiment, the polygonal head 23 is a hexagonal end, and the specific number of sides is not limited.

[0044] Active component 4 is set inside fixed block 1. Active component 4 includes active head 41, connecting part 42, limiting head 43 and second elastic component 44. Active head 41, connecting part 42 and limiting head 43 are arranged in sequence. The second elastic component 44 is sleeved on the limiting head 43. Active head 41 is movably connected to the second connecting hole 13. When the high voltage switch cabinet is closed, the cabinet door is pressed on the active head 41.

[0045] Preferably, the fixing block 1 is C-shaped, and a connecting hole 11 is provided on the C-shaped side wall of the fixing block 1. The connecting hole 11 is used to fix the fixing block 1. In this embodiment, the connecting hole 11 can be a threaded hole, etc., and is not specifically limited here.

[0046] Preferably, a through groove 211 is provided through the main body 21, and the connecting rod 31 is movably connected to the through groove 211. One end of the connecting rod 31, the active member 4, is connected through the through groove 211. In this embodiment, the connecting rod 31 and the active member 4 can be connected by welding, threaded connection, or other connection methods, which are not specifically limited here.

[0047] Preferably, the connector 22 is provided with an elastic limiting member 221, which is movably connected to the drive rod 4.

[0048] The multi-faceted head 23 includes a receiving groove 231 and a second through hole 232. The receiving groove 231 is disposed at the end of the multi-faceted head 23 away from the connector 22, and the second through hole 232 is disposed on the side wall of the multi-faceted head 23.

[0049] Furthermore, a receiving groove 231 is provided at the end of the polygonal head 23 away from the connector 22, and a receiving member 5 is disposed inside the polygonal head 23, with the opening of the receiving member 5 on the opposite side being flush with the top surface of the polygonal head 23.

[0050] Preferably, the connecting part 42 includes a first limiting block 421 and a second limiting block 422. The diameter of the first limiting block 421 is larger than the diameter of the second connecting hole 13, and the diameter of the second limiting block 422 is larger than the diameter of the first connecting hole 12. The connecting part 42 moves within the C-shaped space of the fixing block 1 and its movement range is limited by the first limiting block 421 and the second limiting block 422.

[0051] Preferably, the limiting head 43 is provided with a connecting groove 431, and the elastic limiting member 221 is movably connected to the connecting groove 431. In this embodiment, the active member 4 and the operating rod 2 are connected to the connecting groove 431 through the elastic limiting member 221, but they can also be connected in other ways.

[0052] In use, when the switch is running normally, the high-voltage switchgear is closed, and the cabinet door presses against the active head 41. The second elastic element 44 is in a compressed state, and the active head 41 is subjected to the force of the switchgear. Since the connecting rod 31 is connected to the active element 4, the connecting rod 31 is subjected to force, causing the pressing head 32 to move inward toward the opening side of the receiving part 5. At this time, the roller 334 is in contact with the horizontal surface of the pressing head 32, the first elastic element 333 is in a relaxed state, and the limiting post 331 is at the same horizontal height as the first through hole 51. When the high-voltage switchgear is opened, the second elastic element 44 relaxes, and the active head 41 is no longer subjected to the force in the direction of the switchgear. The connecting rod 31 drives the pressing head 32 to move toward the opening side of the receiving part. Here, the roller 334 is in contact with the inclined surface 321, the first elastic element 333 is in a compressed state, and at this time, the limiting post 331 extends out of the second through hole 232 to prevent the ground knife operating handle from being inserted.

[0053] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A telescopic mechanism, characterized in that: include, The accommodating member (5) has a structure with a central groove and a sidewall connected to the groove. A first through hole (51) is provided on the sidewall, and the central groove is an accommodating space A. The telescopic unit (3) includes a connecting rod (31), an extrusion head (32), and a cam assembly (33). One end of the connecting rod (31) is movably connected to one end of the extrusion head (32). The end of the extrusion head (32) away from the connecting rod (31) is an outwardly protruding inclined surface (321). The extrusion head (32) is movably connected to the cam assembly (33). The telescopic unit (3) is disposed in the accommodating space A.

2. The telescopic mechanism according to claim 1, characterized in that: The cam assembly (33) includes a limiting post (331) disposed on one side of the limiting block (332) and a roller (334) disposed on the other side of the limiting block (332). A first elastic element (333) is sleeved on the limiting post (331), and the diameter of the first elastic element (333) is larger than the diameter of the first through hole (51).

3. The telescopic mechanism according to claim 2, characterized in that: The height of the telescopic unit (3) is approximately equal to the height of the protrusion of the extrusion head (32).

4. A device for interlocking the operating mechanism of a 10kV switchgear grounding switch, characterized in that: Includes the telescopic mechanism as described in any one of claims 1 to 3; and, A fixing block (1) is provided with a first connecting hole (12) and a second connecting hole (13). The first connecting hole (12) is located at one end of the fixing block (1), and the second connecting hole (13) is located at the other end of the fixing block (1). The operating lever (2) includes a main body (21), a connector (22) disposed at one end of the main body (21), and a multi-faceted head (23) disposed at the other end of the main body (21). The connector (22) is movably connected to the first connecting hole (12). An active rod (4) is disposed within the fixed block (1). The active rod (4) includes an active head (41), a connecting part (42), a limiting head (43), and a second elastic element (44). The active head (41), the connecting part (42), and the limiting head (43) are arranged in sequence. The second elastic element (44) is sleeved on the limiting head (43). The active head (41) is movably connected to the second connecting hole (13).

5. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 4, characterized in that: The fixing block (1) is C-shaped, and a connecting hole (11) is provided on the C-shaped side wall of the fixing block (1).

6. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 4, characterized in that: A through groove (211) is provided inside the main body (21), and the connecting rod (31) is movably connected to the through groove (211).

7. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 6, characterized in that: The connector (22) is provided with an elastic limiting member (221), which is movably connected to the driving rod (4). The polygonal head (23) includes a receiving groove (231) and a second through hole (232). The receiving groove (231) is located at one end of the polygonal head (23) away from the connector (22), and the second through hole (232) is located on the side wall of the polygonal head (23).

8. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 7, characterized in that: The multi-faceted head (23) has a receiving groove (231) at the end away from the connector (22), and the receiving member (5) is disposed in the receiving groove (231).

9. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 8, characterized in that: The connecting part (42) includes a first limiting block (421) and a second limiting block (422), wherein the diameter of the first limiting block (421) is larger than the diameter of the second connecting hole (13), and the diameter of the second limiting block (422) is larger than the diameter of the first connecting hole (12).

10. The interlocking 10KV switchgear grounding switch operating mechanism device according to claim 9, characterized in that: The limiting head (43) is provided with a connecting groove (431), and the elastic limiting member (221) is movably connected to the connecting groove (431).

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