A locking device for a dual power transfer switch

Abstract

The utility model is suitable for electrical switch field, disclose a locking device of double power conversion switch, include: frame, rotation connection on frame's turn lock subassembly, set up in frame and be located in turn lock subassembly one survey's micro -switch subassembly, set up in frame and be located in turn lock subassembly other side's closing component, and set up in frame and with closing component swing joint's closing coil subassembly, turn lock subassembly includes rotation lock core that rotates and connects on frame, first locking piece and second locking piece that set up on rotation lock core, when rotation lock core is in first position, first locking piece does not abut with micro -switch subassembly, second locking piece does not abut with closing component, micro -switch subassembly is in normally closed state, closing component free rotation, when rotation lock core is in second position, first locking piece abut with micro -switch subassembly, second locking piece abut with closing component, micro -switch subassembly is in normally open state, closing component is restricted to rotate.

Description

Technical Field

[0001] This utility model relates to the field of electrical switches, and in particular to a locking device for a dual power supply transfer switch. Background Technology

[0002] Dual power transfer switches are widely used in industries, medical facilities, data centers, rail transportation, and other places with high power requirements. Any interruption of power switching can have serious consequences. Therefore, after a certain number of years of use, it is inevitable to carry out periodic maintenance on the circuit system. At this time, it is necessary to lock the dual power transfer switch to prevent accidental closing by non-professionals during maintenance, which could cause personal injury or death. Therefore, there is an urgent need for a locking device that can lock the dual power transfer switch. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a locking device for a dual power supply changeover switch.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A locking device for a dual-power transfer switch is constructed, comprising: a frame, a rotary lock assembly rotatably connected to the frame, a micro switch assembly disposed on the frame and located on one side of the rotary lock assembly, a closing assembly disposed on the frame and located on the other side of the rotary lock assembly, and a closing coil assembly disposed on the frame and movably connected to the closing assembly; wherein, the rotary lock assembly includes a rotary lock core rotatably connected to the frame, a first locking member and a second locking member disposed on the rotary lock core; when the rotary lock core is in a first position, the first locking member does not abut against the micro switch assembly, the second locking member does not abut against the closing assembly, the micro switch assembly is in a normally closed state, and the closing assembly rotates freely; when the rotary lock core is in a second position, the first locking member abuts against the micro switch assembly, the second locking member abuts against the closing assembly, the micro switch assembly is in a normally open state, and the closing assembly is restricted from rotation.

[0005] Furthermore, the closing assembly includes a rotating shaft rotatably connected to the frame, a bracket disposed on the rotating shaft, and a sliding member hinged to the bracket and moving relative to the closing coil. The bracket is provided with a limiting part on the side near the second locking member, and the limiting part abuts against the second locking member.

[0006] Furthermore, when the rotary lock cylinder is in the second position, the second locking member extends from the rotary lock cylinder toward the limiting part to form a connecting member. The connecting member has an abutment member on the side near the limiting part. The abutment member abuts against the limiting part, and the shape of the abutment member matches the shape of the limiting part.

[0007] Furthermore, the bracket is provided with an extension component on the side away from the rotating lock core. The extension component extends toward the closing coil. When the rotating shaft is at the third angle, the extension component does not abut against the frame. When the rotating shaft is at the fourth angle, the extension component abuts against the frame.

[0008] Furthermore, the micro switch assembly includes a switch body disposed on the frame and an actuating spring disposed on the switch body and abutting against the first locking member.

[0009] Furthermore, the rotary lock cylinder includes a lock body disposed on the frame, a lock hole disposed on the lock body, and a lock assembly disposed within the lock body.

[0010] Furthermore, the rotary lock cylinder includes a drive member disposed below the lock assembly, a first locking member disposed on the drive member, a second locking member disposed on the drive member, the first locking member being perpendicular to the drive member, the first locking member being cam-shaped, and the cam rotation axis of the first locking member being non-concentric with the rotation axis of the rotary lock cylinder.

[0011] Furthermore, the frame includes a base, a first support frame, and a second support frame. The base is disposed at the bottom of the locking device, the first support frame is vertically disposed on the base, and the second support frame is disposed on the first support frame and is parallel to the base.

[0012] Furthermore, the rotary lock cylinder is mounted on the second support frame, the micro switch assembly is mounted on the first support frame, and the closing assembly is mounted on the base.

[0013] Furthermore, the base is provided with several through holes and several feet that are detachably connected to the through holes, and the feet are made of elastic material.

[0014] The locking device for a dual-power transfer switch according to this utility model has the following advantages: When the rotating lock cylinder is in the first position, the first locking member does not abut against the micro switch assembly, and the second locking member does not abut against the closing assembly. The micro switch assembly is in a normally closed state, the closing assembly can rotate normally, and the circuit of the closing coil assembly is in a normally closed state and can close normally. When the rotating lock cylinder is in the second position, the first locking member abuts against the micro switch assembly, and the second locking member abuts against the closing assembly. The micro switch assembly is in a normally closed open state, the closing assembly is restricted from rotating, and the circuit of the closing coil assembly is disconnected and in an open state, preventing the closing coil assembly from closing. This achieves electrical interlocking protection. The entire locking device for the dual-power transfer switch has a simple structure, is easy to operate, and has both mechanical and electrical interlocking protection, making it reliable and safe. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings: Figure 1 This is an overall view of a locking device for a dual power supply changeover switch in one embodiment of the present invention; Figure 2 This is a third-angle front view of a locking device for a dual-power transfer switch according to one embodiment of the present invention; Figure 3 This is a fourth-angle front view of a locking device for a dual-power transfer switch according to one embodiment of the present invention; Figure 4 This is a structural diagram of the rotating lock body of a locking device for a dual power supply changeover switch in one embodiment of the present invention, with the lock body in the second position. Figure 5 This is a structural diagram of the rotating lock body of a locking device for a dual power supply changeover switch in one embodiment of the present invention, with the lock body in the first position. Figure 6 This is a structural diagram of the rotating lock core of a locking device for a dual power supply changeover switch according to one embodiment of the present invention; Figure 7 This is a structural diagram of the first and second locking components of a locking device for a dual-power transfer switch according to one embodiment of the present invention. Figure 8 This is a structural diagram of the closing assembly of a locking device for a dual-power transfer switch in one embodiment of the present invention; Figure 9 This is a bottom view of the closing assembly of a locking device for a dual-power transfer switch according to one embodiment of the present invention.

[0016] Figure Labels 100, Frame; 110, Second bracket; 120, First bracket; 130, Base; 200, Rotary lock cylinder; 210, Lock body; 220, Drive component; 230, First locking component; 240, Second locking component; 241, Connecting component; 242, Abutting component; 300, Micro switch assembly; 310, Switch body; 320, Actuating spring; 400, Closing assembly; 410, Rotating shaft; 420, Bracket; 421, Limiting part; 430, Sliding component; 500, Closing coil assembly. Detailed Implementation

[0017] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "upper," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0018] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0019] Figures 1 to 9This invention illustrates a locking device for a dual-power transfer switch according to one embodiment of the present invention. This locking device can be used to lock a dual-power switching device. It may include a frame 100, a rotary lock assembly rotatably connected to the frame 100, a micro switch assembly 300 disposed on the frame 100 and located on one side of the rotary lock assembly, a closing assembly 400 disposed on the frame 100 and located on the other side of the rotary lock assembly, and a closing coil assembly 500 disposed on the frame 100 and movably connected to the closing assembly 400. The rotary lock assembly includes a rotary lock core 2 rotatably connected to the frame 100. 00. The first locking member 230 and the second locking member 240 are provided on the rotary lock cylinder 200. When the rotary lock cylinder 200 is in the first position, the first locking member 230 does not abut against the micro switch assembly 300, the second locking member 240 does not abut against the closing assembly 400, the micro switch assembly 300 is in the normally closed state, and the closing assembly 400 rotates freely. When the rotary lock cylinder 200 is in the second position, the first locking member 230 abuts against the micro switch assembly 300, the second locking member 240 abuts against the closing assembly 400, the micro switch assembly 300 is in the normally open state, and the closing assembly 400 is restricted from rotating.

[0020] When the rotary lock cylinder 200 is in the first position, the first locking member 230 does not abut against the micro switch assembly 300, and the second locking member 240 does not abut against the closing assembly 400. The micro switch assembly 300 is in a normally closed state, the closing assembly 400 can rotate normally, and the circuit of the closing coil assembly 500 is in a normally closed state and can close normally. When the rotary lock cylinder 200 is in the second position, the first locking member 230 abuts against the micro switch assembly 300, and the second locking member 240 abuts against the closing assembly 400. The micro switch assembly 300 is in a normally closed open state, the closing assembly 400 is restricted from rotating, and the circuit of the closing coil assembly 500 is disconnected and in an open state. The closing coil assembly 500 cannot close, thus achieving electrical interlock protection. The locking device of the entire dual power supply transfer switch has a simple structure, is easy to operate, and has both mechanical and electrical interlock protection, making it reliable and safe.

[0021] Understandably, the closing coil assembly 500 is the core component of the electric closing section in a high-voltage circuit breaker, using a hollow cylindrical coil wound with copper wire. In a high-voltage circuit breaker, closing is achieved by utilizing the electromagnetic effect of energizing the closing coil assembly 500 to convert electrical energy into mechanical energy, causing the armature of the closing coil assembly 500 to strike the closing operating mechanism of the circuit breaker, thus achieving the purpose of closing the circuit breaker.

[0022] In one specific embodiment, when the micro switch assembly 300 is in a normally closed state and the closing assembly 400 restricts rotation, the closing coil assembly 500 will be restricted by the closing assembly 400 and will not be able to close.

[0023] Figure 1 , Figure 8 and Figure 9 The closing assembly 400, as shown in one embodiment, may include a rotating shaft 410 rotatably connected to the frame 100, a bracket 420 disposed on the rotating shaft 410, and a sliding member 430 hinged to the bracket 420 and movable relative to it within the closing coil. The bracket 420 has a limiting part 421 on the side near the second locking member 240, and the limiting part 421 abuts against the second locking member 240. Under the drive of the rotating lock cylinder 200, the second locking member 240 rotates to the limiting part 421, and the second locking member 240 abuts against the limiting part 421, thereby restricting the rotation of the bracket 420.

[0024] In one specific embodiment, a gap is provided between the second locking member 240 and the limiting part 421, which allows the second locking member 240 to rotate and prevents the second locking member 240 from being jammed by the limiting part 421.

[0025] Figure 5 , Figure 6 and Figure 7 The rotary lock cylinder 200 is shown in one embodiment to include a second locking member 240 extending from the rotary lock cylinder 200 toward the limiting portion 421 as a connector 241 when the rotary lock cylinder 200 is in the second position. The connector 241 has an abutment member 242 on the side near the limiting portion 421. The abutment member 242 abuts against the limiting portion 421. The shape of the abutment member 242 matches the shape of the limiting portion 421. The abutment member 242 restricts the rotation of the bracket 420.

[0026] In one specific embodiment, the abutment 242 is flat and the limiting part 421 is planar. The abutment 242 and the limiting part 421 have the same shape. The abutment 242 can fit into the limiting part 421 to the maximum extent, thereby limiting the rotation of the bracket 420 to the maximum extent.

[0027] In one specific embodiment, the corners of the abutment member 242 are rounded, which can prevent scratching of the limiting part 421.

[0028] Figure 5 , Figure 6 and Figure 7 The bracket 420 is shown in one embodiment and may include an extension component on the side of the bracket 420 away from the rotating lock core 200. The extension component extends toward the closing coil. When the rotating shaft 410 is at a third angle, the extension component does not abut against the frame 100. When the rotating shaft 410 is at a fourth angle, the extension component abuts against the frame 100. The extension component limits the angle of rotation of the bracket 420.

[0029] Figure 5 and Figure 6The diagram shows a micro switch assembly 300 in one embodiment, which may be mounted on a frame 100 as a switch body 310 and an actuating spring 320 mounted on the switch body 310 and abutting against a first locking member 230. The first locking member 230 rotates to abut against the actuating spring 320, and the actuating spring 320 directly triggers the switch body 310 to disconnect the micro switch assembly 300.

[0030] Figure 7 The rotary lock cylinder 200, as shown in one embodiment, may include a lock body 210 disposed on a frame 100, a keyhole disposed on the lock body 210, and a lock assembly disposed within the lock body 210. The user needs to insert a key that matches the rotary lock cylinder 200 into the keyhole, and the lock assembly engages the key to rotate the lock body 210.

[0031] Figure 7 The rotary lock cylinder 200, as shown in one embodiment, may include a drive member 220 disposed below the lock assembly, a first locking member 230 disposed on the drive member 220, a second locking member 240 disposed on the drive member 220, the first locking member 230 being perpendicular to the drive member 220, the first locking member 230 being cam-shaped, the cam rotation axis of the first locking member 230 being non-concentric with the rotation axis of the rotary lock cylinder 200, the actuating spring 320 being in constant contact with the first locking member 230, the cam shape of the first locking member 230 reducing wear on the actuating spring 320.

[0032] Figure 1 , Figure 2 and Figure 3 The frame 100 shown in one embodiment may include a base 130, a first support frame, and a second support frame. The base 130 is disposed at the bottom of the locking device, the first support frame is vertically disposed on the base 130, and the second support frame is disposed on the first support frame and parallel to the base 130. The first support frame and the second support frame form a right angle to facilitate the installation of the rotary lock cylinder 200, the micro switch assembly 300, and the closing assembly 400, which can be easily adjusted in two directions toward the micro switch assembly 300 and the closing assembly 400.

[0033] Figure 1 , Figure 2 and Figure 3 The rotary lock cylinder 200 shown in one embodiment may include a rotary lock cylinder 200 disposed on a second support frame, a micro switch assembly 300 disposed on a first support frame, and a closing assembly 400 disposed on a base 130.

[0034] Figure 1 , Figure 2 and Figure 3The base 130 is shown in one embodiment and may include a plurality of through holes and a plurality of feet detachably connected to the through holes. The feet are made of elastic material, which can greatly reduce the vibration of the feet in contact with the plane and reduce the impact of external environmental vibration on the locking device.

[0035] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A locking device for a dual-power transfer switch, characterized in that, include: A frame (100), a rotary lock assembly rotatably connected to the frame (100), a micro switch assembly (300) disposed on the frame (100) and located on one side of the rotary lock assembly, a closing assembly (400) disposed on the frame (100) and located on the other side of the rotary lock assembly, and a closing coil assembly (500) disposed on the frame (100) and movably connected to the closing assembly (400); The rotary lock assembly includes a rotary lock cylinder (200) rotatably connected to the frame (100), a first locking member (230) and a second locking member (240) disposed on the rotary lock cylinder (200). When the rotary lock cylinder (200) is in the first position, the first locking member (230) does not abut against the micro switch assembly (300), the second locking member (240) does not abut against the closing assembly (400), the micro switch assembly (300) is in a normally closed state, and the closing assembly (400) rotates freely. When the rotary lock cylinder (200) is in the second position, the first locking member (230) abuts against the micro switch assembly (300), the second locking member (240) abuts against the closing assembly (400), the micro switch assembly (300) is in a normally open state, and the closing assembly (400) is restricted from rotating.

2. The locking device for a dual power supply changeover switch according to claim 1, characterized in that, The closing assembly (400) includes a rotating shaft (410) rotatably connected to the frame (100), a bracket (420) disposed on the rotating shaft (410), and a sliding member (430) hinged to the bracket (420) and moving relative to the closing coil. The bracket (420) has a limiting part (421) on the side near the second locking member (240), and the limiting part (421) abuts against the second locking member (240).

3. The locking device for a dual power supply changeover switch according to claim 2, characterized in that, When the rotary lock cylinder (200) is in the second position, the second locking member (240) extends from the rotary lock cylinder (200) toward the limiting part (421) to form a connecting member (241). The connecting member (241) has an abutment (242) on the side near the limiting part (421). The abutment (242) abuts against the limiting part (421). The shape of the abutment (242) matches the shape of the limiting part (421).

4. The locking device for a dual power supply transfer switch according to claim 2, characterized in that, The bracket (420) has an extension component on the side away from the rotating lock core (200). The extension component extends toward the closing coil. When the rotating shaft (410) is at the third angle, the extension component does not abut against the frame (100). When the rotating shaft (410) is at the fourth angle, the extension component abuts against the frame (100).

5. The locking device for a dual power supply transfer switch according to claim 1, characterized in that, The micro switch assembly (300) includes a switch body (310) disposed on the frame (100) and an actuating spring (320) disposed on the switch body (310) and abutting against the first locking member (230).

6. The locking device for a dual power supply changeover switch according to claim 1, characterized in that, The rotary lock cylinder (200) includes a lock body (210) disposed on the frame (100), a lock hole disposed on the lock body (210), and a lock assembly disposed within the lock body (210).

7. The locking device for a dual power supply changeover switch according to claim 6, characterized in that, The rotary lock cylinder (200) includes a drive member (220) disposed below the lock assembly, a first locking member (230) disposed on the drive member (220), a second locking member (240) disposed on the drive member (220), the first locking member (230) being perpendicular to the drive member (220), the first locking member (230) being cam-shaped, and the rotation axis of the cam of the first locking member (230) being non-concentric with the rotation axis of the rotary lock cylinder (200).

8. The locking device for a dual power supply transfer switch according to claim 1, characterized in that, The frame (100) includes a base (130), a first support frame and a second support frame. The base (130) is disposed at the bottom of the locking device. The first support frame is vertically disposed on the base (130). The second support frame is disposed on the first support frame and is parallel to the base (130).

9. A locking device for a dual power supply changeover switch according to claim 8, characterized in that, The rotary lock cylinder (200) is mounted on the second support frame, the micro switch assembly (300) is mounted on the first support frame, and the closing assembly (400) is mounted on the base (130).

10. A locking device for a dual power supply changeover switch according to claim 8, characterized in that, The base (130) is provided with several through holes and several feet that are detachably connected to the through holes, and the feet are made of elastic material.

Images