Grounding knife-switch rocker operating tool

Abstract

The utility model provides a grounding knife switch rocker operating tool, which belongs to the technical field of power maintenance, and comprises a tool disc, a knife switch screwing operating mechanism and a tongue piece pressing mechanism, and the tool disc is used for butt joint of mechanical arms of an operation and maintenance robot; the disconnecting link screwing operation mechanism comprises a motor sleeve, a rotating motor arranged in the motor sleeve and a rotating sleeve in driving connection with the rotating motor; the rear end of the motor sleeve is connected with the tool shelf through an adapter; the tongue piece pressing mechanism comprises an installation support, a pressing driving element installed on the installation support and a lower pressing plate connected to an execution shaft of the pressing driving element. The installation support is connected with the motor sleeve through the fixing base. The grounding knife-switch rocker operating tool provided by the utility model can realize the functions of pushing aside the protective tongue piece and rotating the rocker, simplifies the operation process, and avoids potential safety hazards caused by human interference.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power maintenance, and in particular relates to a rocker operating tool for a grounding knife switch. Background Art

[0002] High and low voltage switchgear is one of the main equipment in the distribution room. Daily operation and maintenance mainly include inspection of the working status of the switchgear, opening and closing operations of the circuit breaker, and rocking in and out of the switchgear drawers. The maintenance operation of the trolley-type circuit breaker requires pulling the trolley circuit breaker out of the high-voltage switchgear.

[0003] A grounding knife, or earthing knife switch, is a safety interlock installed in high-voltage switchgear to replace the grounding wire. In accordance with the "five-protection" requirements, the grounding knife can only be closed during equipment maintenance, or when the circuit breaker and disconnector are disconnected. It acts like a grounding wire. During normal operation, the grounding knife must be open, and the equipment is typically equipped with a mechanical interlock. When the circuit breaker is closed, the grounding knife cannot be closed; similarly, when the grounding knife is closed, the high-voltage circuit breaker cannot be closed.

[0004] During daily operation and maintenance, inspection robots are used to assist in operations, and simple knob operations and ground knife switch handle operations are performed. The robot's working performance is relatively simple, and the switch cabinet ground knife operating joystick in the switch room has a protective tongue. Therefore, when operating, the protective tongue must be opened first to expose the operating hole before the joystick can be inserted for rotation. It can be seen that during the operation, multiple actions need to be coordinated simultaneously to perform the operation, but the existing robots cannot realize complex multi-action operations and more functional applications. Utility Model Content

[0005] The embodiment of the utility model provides a rocker operating tool for a grounding knife switch, aiming to solve the problem that existing operating tools cannot realize complex multi-action operations.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a grounding knife switch rocker operating tool, including: a tool tray, a knife switch rotating operating mechanism and a tongue pressing mechanism, the tool tray is used to dock with the mechanical arm of the operation and maintenance robot; the knife switch rotating operating mechanism includes a motor sleeve, a rotating motor arranged in the motor sleeve and a rotating sleeve driven and connected to the rotating motor; the rear end of the motor sleeve is connected to the tool tray through an adapter seat; the tongue pressing mechanism includes a mounting bracket, a pressing drive element mounted on the mounting bracket and a lower pressure plate connected to the execution shaft of the pressing drive element; the mounting bracket is connected to the motor sleeve through a fixed seat.

[0007] In one achievable manner, the tongue pressing mechanism further includes an upper pressing plate fixed on the mounting bracket, wherein the upper pressing plate is supported on the switch cabinet body to provide support for the lower pressing plate to press down the protective tongue.

[0008] In one achievable manner, the pressing drive element is an electric push rod, and the lower pressing plate is fixed on the electric push rod.

[0009] In one feasible embodiment, the pressing drive element is a stepper motor, which is installed on the mounting bracket. The main shaft of the stepper motor is connected to the screw rod, and the lower pressure plate is provided with a threaded hole threadedly connected to the screw rod; a guide rod is also provided between the mounting bracket and the lower pressure plate.

[0010] In one feasible manner, two guide rods are provided between the mounting bracket and the lower pressing plate, and the rotating sleeve is located between the two guide rods.

[0011] In one achievable manner, a motor cover is further mounted on the mounting bracket, and the pressing drive element is located inside the motor cover.

[0012] In one practicable manner, the mounting bracket is connected to the fixing seat via a connecting rod.

[0013] In one feasible manner, a knife switch positioning sleeve is further provided at the front end of the motor sleeve, and the rotating sleeve is coaxially sleeved in the knife switch positioning sleeve and extends out of the knife switch positioning sleeve.

[0014] In one feasible manner, the knife switch positioning sleeve is fixed to the motor sleeve via a mounting plate.

[0015] Compared with the existing technology, the grounding knife switch rocker operating tool provided by this utility model has the following advantages: the lower pressure plate of the tongue pressing mechanism first presses the protective tongue downward until the operating hole is exposed. Then, a rotating sleeve is inserted into the rocker of the knife switch, and the rotary motor is started to rock the rocker to close the grounding knife switch. While the rotating sleeve rotates the rocker, the lower pressure plate continues to press the protective tongue. When the rocker operation is completed, the mechanical arm drives the entire tool away from the switch cabinet, and the lower pressure plate moves away from the protective tongue. The protective tongue elastically resets to continue covering the operating hole, preventing misoperation. This operating tool can realize the functions of opening the protective tongue and rotating the rocker, simplifying the operation process and avoiding safety hazards caused by human interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the rocker operating tool for the grounding knife switch provided in the embodiment of the utility model Figure 1 ;

[0017] Figure 2 Schematic diagram of the three-dimensional structure of the rocker operating tool for the grounding knife switch provided in the embodiment of the utility model Figure 2 ;

[0018] Figure 3 A schematic diagram of the main structure of the rocker operating tool for the grounding knife switch provided by an embodiment of the utility model;

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the rocker operating tool for the grounding knife switch provided by the embodiment of the utility model without the motor cover Figure 1 ;

[0020] Figure 5 Schematic diagram of the three-dimensional structure of the rocker operating tool for the grounding knife switch provided by the embodiment of the utility model without the motor cover Figure 2 ;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the rocker operating tool for the grounding knife switch provided by the embodiment of the utility model without the motor cover Figure 3 ;

[0022] Figure 7 A schematic diagram of the three-dimensional structure of a knife switch positioning sleeve provided in an embodiment of the utility model;

[0023] Figure 8 A schematic diagram of the three-dimensional structure of a rotating sleeve provided in an embodiment of the utility model;

[0024] Description of reference numerals:

[0025] 1. Motor sleeve; 2. Adapter; 21. Fixing plate; 22. Connecting sleeve; 23. Adapter plate; 3. Tool tray; 4. Fixing seat; 5. Connecting rod; 6. Motor cover; 7. Upper pressure plate; 8. Guide rod; 9. Lower pressure plate; 10. Rotating sleeve; 11. Knife switch positioning sleeve; 12. Mounting plate; 13. Press drive element; 14. Mounting bracket; 15. Screw. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] Please also refer to Figures 1 to 8The rocker operating tool for the grounding knife switch provided by the present invention is now described. The rocker operating tool for the grounding knife switch comprises: a tool tray 3, a knife switch rotating operating mechanism, and a tongue pressing mechanism. The tool tray 3 is used for docking with the mechanical arm of the operation and maintenance robot. The knife switch rotating operating mechanism comprises a motor sleeve 1, a rotating motor disposed within the motor sleeve 1, and a rotating sleeve 10 drive-connected to the rotating motor. The rear end of the motor sleeve 1 is connected to the tool tray 3 via an adapter 2. The tongue pressing mechanism comprises a mounting bracket 14, a pressing drive element 13 mounted on the mounting bracket 14, and a lower pressing plate 9 connected to the actuator shaft of the pressing drive element 13. The mounting bracket 14 is connected to the motor sleeve 1 via a fixing base 4.

[0028] Compared with the prior art, the rocker operating tool for the grounding knife switch provided by the present invention has the following beneficial effects: the lower pressure plate 9 of the tongue pressing mechanism first presses the protective tongue downward until the operating hole is exposed, and then the rotating sleeve 10 is inserted into the rocker of the knife switch. The rocker can be shaken by starting the rotary motor to close the grounding knife switch. During the process of rotating the rocker by the rotating sleeve 10, the lower pressure plate 9 will continue to press the protective tongue. When the rocker operation is completed, the mechanical arm drives the entire tool away from the switch cabinet, and the lower pressure plate 9 leaves the protective tongue. The protective tongue can be elastically reset to continue covering the operating hole, avoiding misoperation. This operating tool can realize the functions of opening the protective tongue and rotating the rocker, simplifying the operation process, shortening the operation time, and avoiding safety hazards caused by human interference.

[0029] The rear end of the rotating sleeve 10 is equipped with a connecting sleeve, which connects to the rotating motor via a coupling. Optionally, the coupling is an HPJM-RE80-110-PRO-XX joint module. The front end of the rotating sleeve 10 is equipped with a rectangular, hexagonal, or cross-shaped hole for the rocker. The rotating sleeve 10 is interchangeable to accommodate different rockers, improving the tool's adaptability.

[0030] In some embodiments, as Figures 1 to 6 As shown, the tongue pressing mechanism also includes an upper pressing plate 7 fixed to a mounting bracket 14. The upper pressing plate 7 is supported on the switch cabinet body and provides support for the lower pressing plate 9 to press down on the protective tongue. Two upper pressing plates 7 are provided, forming a stable support. Specifically, the upper pressing plate 7 is formed by bending a single plate into two upper pressing tongues.

[0031] In some embodiments, as Figures 1 to 6 As shown, the pressing drive element 13 is an electric push rod, and the lower pressing plate 9 is fixed on the electric push rod. When the upper pressing plate 7 is supported on the step of the switch cabinet body, the electric push rod extends downward, pushing the lower pressing plate 9 downward to press the protective tongue until the operating hole of the knife switch is exposed.

[0032] In some embodiments, as Figures 1 to 6 As shown, the pressing drive element 13 is a stepper motor mounted on a mounting bracket 14. The stepper motor's main shaft is connected to a screw 15. The lower pressing plate 9 is provided with a threaded hole for threaded connection to the screw 15. A guide rod 8 is also provided between the mounting bracket 14 and the lower pressing plate 9. Optionally, the stepper motor is 42N260-2-2.5-4-130-002. When the stepper motor is activated, it rotates the screw 15, thereby driving the threaded lower pressing plate 9 in linear motion. The guide rod 8 guides the lower pressing plate 9 as it is raised and lowered.

[0033] Specifically, a limiting nut is provided at the lower end of the screw rod 15, and the limiting nut forms a radial limit with the screw rod 15 through a locking screw or a pin; the limiting nut can prevent the lower pressure plate 9 from falling off from the screw rod 15; an upper limit sleeve is provided at the upper end of the guide rod 8, and a lower limit sleeve is provided at the lower end. The upper limit sleeve supports the guide rod 8 on the mounting bracket 14, and the lower limit sleeve has a lower limit function on the lower pressure plate 9.

[0034] The lower pressing plate 9 includes a connecting plate and a lower pressing tongue provided on the connecting plate, and the lower pressing tongue protrudes forward to facilitate pressing down the protective tongue piece.

[0035] In some embodiments, as Figures 1 to 6 As shown, two guide rods 8 are provided between the mounting bracket 14 and the lower pressing plate 9, and the rotating sleeve 10 is located between the two guide rods 8. The two guide rods 8 and the screw rod 15 form a stable structure of three-point support, so that the lower pressing plate 9 can be smoothly lowered.

[0036] In some embodiments, as Figures 1 to 6 As shown, the motor cover 6 is also mounted on the mounting bracket 14, and the pressing drive element 13 is located in the motor cover 6. The mounting bracket 14 is an L-shaped structure, and the housing formed together with the motor cover 6 protects the pressing drive element 13.

[0037] In some embodiments, as Figures 1 to 6 As shown, the mounting bracket 14 is connected to the fixing base 4 via a connecting rod 5. The fixing base 4 is fixed to the motor sleeve 1, and the connecting rod 5 is connected between the fixing base 4 and the mounting bracket 14 to provide support for the mounting bracket 14, thereby supporting the pressing drive element 13.

[0038] In some embodiments, as Figures 1 to 7As shown, the front end of the motor sleeve 1 is also provided with a knife switch positioning sleeve 11, and the rotating sleeve 10 is coaxially sleeved in the knife switch positioning sleeve 11 and extends out of the knife switch positioning sleeve 11. When the current rotating sleeve 10 is used to rotate the rocker, there is a problem of poor positioning effect during the rotation process. However, the knife switch positioning sleeve 11 provided in this application can solve the problem of poor positioning effect of the rotating sleeve 10. Specifically, when the rotating sleeve 10 is inserted into the operating hole and engaged with the rocker, the front end of the knife switch positioning sleeve 11 can also be pressed against the end surface around the operating hole by the mechanical arm, thereby avoiding the phenomenon of inaccurate positioning of the rotating sleeve 10.

[0039] In some embodiments, as Figures 1 to 6 As shown, the knife switch positioning sleeve 11 is fixed to the motor sleeve 1 through a mounting plate 12. Wherein, the mounting plate 12 is fixed to the front end of the motor sleeve 1 by bolts.

[0040] In this application, if Figures 1 to 6 As shown, the adapter 2 connected to the tool tray 3 includes an adapter plate 23 connected to the tool tray 3, a connecting sleeve 22, and a fixing plate 21 connected to the motor sleeve 1. The fixing plate 21 is sealed at the rear end of the motor sleeve 1, and the two are bolted together. The connecting sleeve 22 is connected between the adapter plate 23 and the fixing plate 21. The front end of the motor sleeve 1 is also provided with a front cover, and the mounting plate 12 is fixed to the front cover by bolts. The various components of this application are connected by bolts, which facilitates disassembly and assembly.

[0041] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rocker operating tool for a grounding switch, characterized in that: include: Tool tray (3), used for docking the mechanical arm of the operation and maintenance robot; A knife switch screwing operating mechanism comprises a motor sleeve (1), a rotating motor arranged in the motor sleeve (1), and a rotating sleeve (10) drivingly connected to the rotating motor; the rear end of the motor sleeve (1) is connected to the tool disk (3) via an adapter seat (2); and The tongue pressing mechanism comprises a mounting bracket (14), a pressing drive element (13) mounted on the mounting bracket (14), and a lower pressing plate (9) connected to an execution shaft of the pressing drive element (13); the mounting bracket (14) is connected to the motor sleeve (1) via a fixing seat (4).

2. The rocker operating tool for the grounding knife switch according to claim 1, characterized in that: The tongue pressing mechanism further comprises an upper pressing plate (7) fixed on the mounting bracket (14); the upper pressing plate (7) is supported on the switch cabinet body to provide support for the lower pressing plate (9) to press down the protective tongue.

3. The grounding switch rocker operating tool according to claim 1, characterized in that: The pressing drive element (13) is an electric push rod, and the lower pressing plate (9) is fixed on the electric push rod.

4. The grounding switch rocker operating tool according to claim 1, characterized in that: The pressing drive element (13) is a stepper motor, which is mounted on the mounting bracket (14). The main shaft of the stepper motor is connected to the screw rod (15), and the lower pressing plate (9) is provided with a threaded hole threadedly connected to the screw rod (15); a guide rod (8) is also provided between the mounting bracket (14) and the lower pressing plate (9).

5. The grounding switch rocker operating tool according to claim 4, characterized in that: Two guide rods (8) are provided between the mounting bracket (14) and the lower pressing plate (9), and the rotating sleeve (10) is located between the two guide rods (8).

6. The grounding switch rocker operating tool according to claim 1, characterized in that: A motor cover (6) is also mounted on the mounting bracket (14), and the pressing drive element (13) is located inside the motor cover (6).

7. The grounding switch rocker operating tool according to claim 1, characterized in that: The mounting bracket (14) is connected to the fixing seat (4) via a connecting rod (5).

8. The grounding switch rocker operating tool according to claim 1, characterized in that: A knife switch positioning sleeve (11) is also provided at the front end of the motor sleeve (1), and the rotating sleeve (10) is coaxially sleeved in the knife switch positioning sleeve (11) and extends out of the knife switch positioning sleeve (11).

9. The grounding switch rocker operating tool according to claim 8, characterized in that: The knife switch positioning sleeve (11) is fixed to the motor sleeve (1) via a mounting plate (12).

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