An outdoor pole-mounted switch isolating operating mechanism

Abstract

This invention provides an outdoor pole-mounted switch disconnecting operating mechanism, including a fixed plate with a transmission component for transmitting power and resetting the disconnecting action; and a positioning component for automatically positioning the closed and open positions. This invention enables the control operation of the built-in disconnecting switch in a pole-mounted circuit breaker, achieving coordination with its complete set of equipment. It has advantages such as compact structure, high space utilization, and simple operation.

Description

Technical Field

[0001] This invention relates to the field of medium-voltage power switch technology, and in particular to an outdoor pole-mounted switch isolating operating mechanism. Background Technology

[0002] In the power industry, disconnect switches are often used in conjunction with circuit breakers to switch circuits on and off. Circuit breakers interrupt fault currents, while disconnect switches create isolation points to provide safety protection for downstream lines.

[0003] As my country's power industry places increasingly higher demands on the integration and miniaturization of switchgear, the mainstream disconnect switches currently adopt either independent or external switchgear structures.

[0004] Stand-alone disconnect switches require a large installation space and are complicated to install, while external disconnect switches have a complex structure, many parts, and a large size.

[0005] Currently, the built-in isolation structure of the new post-mounted circuit breaker does not have a built-in operating mechanism for the disconnecting switch, which cannot meet the requirements for the coordinated use of the post-mounted circuit breaker and the disconnecting switch. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an outdoor pole-mounted switch isolating operating mechanism suitable for the built-in isolating structure of a post-mounted circuit breaker. It features automatic positioning for both closing and opening positions, and also includes a lockout protection function that prevents the isolating switch from operating when the circuit breaker is closed. The technical solution adopted by this invention is as follows:

[0007] An outdoor pole-mounted switch isolating operating mechanism includes a fixing plate, on which is provided...

[0008] A transmission assembly, which is used to transmit power and perform reset and isolation actions;

[0009] A positioning component, which is used for automatic positioning of the closing and opening positions.

[0010] Furthermore, the transmission assembly includes a driven wheel that passes through the fixed plate. One end of the driven wheel is connected to a driven shaft via a connector for transmitting power and resetting the driven shaft. The other end of the driven wheel is provided with a driving wheel.

[0011] Furthermore, the driven wheel is provided with a closing positioning groove and a closing positioning groove on its outer periphery.

[0012] Furthermore, the positioning component includes a positioning claw, which is rotatably connected to the fixed plate via a torsion spring. The positioning claw engages in the closing positioning slot or the opening positioning slot to complete the closing and opening actions.

[0013] Furthermore, the connecting member includes a crank arm disposed at one end of the driven wheel, and the crank arm and the driven shaft are rotatably connected by a connecting plate.

[0014] Furthermore, it also includes a self-locking component, which is disposed on the fixed plate to lock the positioning component.

[0015] Furthermore, the self-locking assembly includes a locking block, which is arranged parallel to the fixed plate and the distance between the locking block and the fixed plate is adjustable.

[0016] Furthermore, the fixed plate is provided with two sets of guide posts, and the locking block is slidably disposed on the two sets of guide posts and parallel to the fixed plate. A locking switch is provided on the side of the locking block away from the fixed plate.

[0017] Advantages of this invention: The entire mechanism occupies little space and, when used in conjunction with a post-type circuit breaker, has an automatic positioning function for the opening and closing positions, facilitating the opening and closing of external disconnect switches;

[0018] It has a function of blocking protection when the circuit breaker is closed, which prevents operation when the circuit breaker is closed, thus improving operational safety. Attached Figure Description

[0019] Figure 1 This is an exploded view of the present invention.

[0020] Figure 2 This is an assembly diagram of the transmission component and the connecting component of the present invention.

[0021] Figure 3 This is a side view of the circuit breaker tripping state of the present invention.

[0022] Figure 4 This is another side view of the circuit breaker tripping state of the present invention.

[0023] In the diagram: 1-Drive shaft, 2-Cylindrical pin, 3-Drive wheel, 4-Driven wheel, 5-Flat washer, 6-Bearing 1, 7-Fixing plate, 8-Crank arm, 9-Connecting plate, 10-Flat key, 11-Driven shaft, 12-Bearing 2, 13-Right end plate, 14-Left end plate, 15-Positioning claw, 16-Torsion spring, 17-Flat pin, 18-Locking block, 19-Guide post, 20-Drive shaft hole, 21-Torsion spring seat, 22-Bearing seat, 23-Driven wheel hole, 24-Opening positioning groove, 25-Closing positioning groove. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] Please see the appendix Figure 1-4 This invention provides an outdoor pole-mounted switch isolation operating mechanism, including a fixing plate 7, on which the fixing plate 7 is provided with

[0026] Transmission components are used to transmit power and perform reset and isolation actions.

[0027] Positioning component, used for automatic positioning of the closing and opening positions.

[0028] The transmission assembly includes a driven wheel 4 that passes through the fixed plate 7, and a driven shaft 11 is connected to one end of the driven wheel 4 via a connector. The input end of the driven wheel 4 is connected to a driving wheel 3, and the input end of the driving wheel 3 is mounted to the driving shaft 1 via a quick-release mechanism. In actual use, the quick-release mechanism can be a fixing pin, a key, a bolt, or other quick-release mechanisms.

[0029] The connecting component includes a crank arm 8 disposed at one end of the driven wheel 4. The crank arm 8 and the driven wheel 4 are located on both sides of the fixed plate 7. The crank arm 8 and the driven shaft 11 are rotatably connected by a connecting plate 9. The crank arm 8 and the connecting plate 9 respectively connect the driven wheel 4 and the driven shaft 11, forming a three-linkage structure, so that when the driven wheel 4 rotates, the driven shaft 11 can only rotate within a certain range under the restriction of the connecting plate 9 and the crank arm 8.

[0030] The fixed plate 7 is provided with a driven wheel hole 23. The driven wheel 4 is installed in the driven wheel hole 23 through the bearing 6 and the flat washer 5. The driven wheel 4 passes through the driven wheel hole 23 and is assembled with the crank arm 8 through the flat key 10.

[0031] The driven wheel 4 is provided with a closing positioning groove 25 and a opening positioning groove 24 on its outer periphery.

[0032] The positioning component includes a positioning claw 15, which is rotatably connected to the fixing plate 7 via a torsion spring 16. The positioning claw 15 is engaged in the closing positioning groove 25 or the opening positioning groove 24 to complete the closing and opening actions.

[0033] The driving wheel 3 is provided with a cam plate on the side of the circumference close to the driven wheel 4, which can rotate synchronously with the driving wheel 3 and push the positioning claw 15 out of the opening positioning groove 24.

[0034] One end of the driving wheel 3 is provided with a fan-shaped baffle plate 1, and the driven wheel 4 is provided with a fan-shaped baffle plate 2. There is a certain angular free travel between the baffle plate 1 and the baffle plate 2. When the driving wheel 3 rotates through a certain angle, the baffle plate 1 and the baffle plate 2 come into contact, and the driving wheel 3 can drive the driven wheel 4 to rotate.

[0035] It also includes a self-locking component, which includes a locking block 18, which is arranged parallel to the fixing plate 7 and the distance between the locking block 18 and the fixing plate 7 is adjustable.

[0036] The fixed plate 7 is provided with two sets of guide posts 19. The locking block 18 is slidably disposed on the two sets of guide posts 19 and parallel to the fixed plate 7. A locking switch is provided on the side of the locking block 18 away from the fixed plate 7. In actual use, a spring is provided on the guide post 19 between the fixed plate 7 and the locking block 18. The locking switch can be a bolt, screw, threaded rod or a handle screwed between the fixed plate 7 and the locking block 18. When the locking block 18 moves to the closest point of the fixed plate 7, when one end of the locking block 18 is locked in the notch of the positioning claw 15, the spring is in a compressed state, which helps the locking block 18 to reset.

[0037] The positioning claw 15 is provided with a flat pin 17, and the torsion spring 16 is sleeved on the flat pin 17.

[0038] The entire device is located inside the circuit breaker, between the left end plate 14 and the right end plate 13. The fixed plate 7 has a convex cross-section, which hides the driving wheel 3, driven wheel 4, positioning claw 15 and locking block 18 inside the fixed plate 7. The left end plate 14 is provided with a driving shaft hole 20 and a torsion spring seat 21. The driving shaft 1 passes through the driving shaft hole 20. One end of the torsion spring 16 is fixed on the torsion spring seat 21 and the other end is fixed on the positioning claw 15. The right end plate 13 is provided with a bearing seat 22. One end of the driven shaft 11 is rotatably connected to the bearing seat 22 through the bearing 12.

[0039] Working principle:

[0040] In the initial state, the positioning claw 15 is engaged in the opening positioning slot 24. Rotating the drive shaft 1 clockwise via the external operating handle causes the drive shaft 1 to drive the drive wheel 3 to rotate via the cylindrical pin 2. The cam plate on the drive wheel 3 pushes the positioning claw 15 to rotate, pushing the positioning claw out of the opening positioning slot 24. At this time, the flat pin 17 rotates with the positioning claw 15, increasing the torque of the torsion spring 16 until the first baffle on the drive wheel 3 and the second baffle on the driven wheel 4 come into contact. The driven wheel 4 rotates with the drive wheel 3, and the torsion spring 16... Under the action of the positioning claw 15, the driven wheel 4 is in contact with the surface of the driven wheel 4. The other end of the driven wheel 4 drives the driven shaft 11 to rotate between the left end plate 14 and the right end plate 13 through the crank arm 8 and the connecting plate 9. Thus, the disconnecting switch is controlled by the external disconnecting operating rod. When the driven wheel 4 rotates to the position of the positioning claw 15 in the closing positioning groove 25, the positioning claw 15 enters the closing positioning groove 25 under the action of the torsion spring 16. At this time, the closing action of the mechanism is completed, the external disconnecting switch is closed, and the circuit breaker is allowed to perform the closing operation.

[0041] When the circuit breaker is closed, the interlocking block 18 is moved to the contact plate 7 using the interlocking switch. At this time, the positioning claw 15 is restricted by the interlocking block 18, so it cannot disengage from the closing positioning groove 25 on the driven wheel 4, ensuring that the external disconnecting switch cannot be disconnected, thus achieving the purpose of self-locking protection.

[0042] When the locking block 18 is removed, the positioning claw 15 is released from its restriction. The drive shaft 1 is rotated in the opposite direction by the external operating handle. Subsequently, the drive wheel 3, driven wheel 4 and other components move in the opposite direction. The positioning claw 15 moves out of the closing positioning groove 25 and remains in contact with the surface of the driven wheel 4 under the action of the torsion spring 16. The driven wheel 4 drives the driven shaft 11 to reverse direction through the crank arm 8 and the connecting plate 9. Then, the external operating lever controls the isolating switch again. When the driven wheel 4 rotates to the position of the positioning claw 15 in the opening positioning groove 24, the positioning claw 15 enters the opening positioning groove 24. At this time, the opening action of the mechanism is completed, and the external isolating switch is disconnected.

[0043] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An outdoor pole-mounted switch isolation operating mechanism, characterized in that: Includes a fixing plate (7), on which are provided The transmission assembly includes a driven wheel (4) that passes through the fixed plate (7). One end of the driven wheel (4) is connected to a driven shaft (11) via a connector for transmitting power and resetting the driven shaft (11). The other end of the driven wheel (4) is provided with a driving wheel (3). The outer periphery of the driven wheel (4) is provided with a closing positioning groove (25) and a closing positioning groove (24). The positioning assembly includes a positioning claw (15), which is rotatably connected to the fixing plate (7) via a torsion spring (16); A self-locking assembly is provided on a fixed plate (7) for locking the positioning assembly. The self-locking assembly includes a locking block (18), which is arranged parallel to the fixed plate (7) and the distance between the locking block (18) and the fixed plate (7) is adjustable. The fixed plate (7) has a convex cross section, which hides the driving wheel (3), driven wheel (4), positioning claw (15) and locking block (18) inside the fixed plate (7); The fixed plate (7) is provided with two sets of guide posts (19), and the locking block (18) is slidably disposed on the two sets of guide posts (19) and parallel to the fixed plate (7). The locking block (18) is provided with a locking switch on the side away from the fixed plate (7).

2. The outdoor pole-mounted switch isolation operating mechanism according to claim 1, characterized in that: The connector includes a crank arm (8) disposed at one end of the driven wheel (4), and the crank arm (8) and the driven shaft (11) are rotatably connected by a connecting plate (9).

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