Special tool for adjusting height of insulating pull rod of circuit breaker

Abstract

The utility model discloses a special tool for adjusting the height of a circuit breaker insulation pull rod, and the tool comprises a nut fixing mechanism which comprises a guide cylinder and a force bearing handle, the force bearing handle is disposed on the guide cylinder, and one end, away from the force bearing handle, of the guide cylinder is provided with a locking ring for driving a nut to rotate; the screw adjusting mechanism comprises a tool bit, a guide rod and a driving handle, the tool bit is arranged at one end of the guide rod, the driving handle is arranged at the end, away from the tool bit, of the guide rod, the tool bit is located in the guide cylinder, and the tool bit can abut against a groove formed in the end of the screw in advance. According to the special tool for adjusting the height of the insulating pull rod of the circuit breaker, the nut can be driven to rotate through the nut fixing mechanism so that the screw can be fixedly connected to the insulating pull rod in an abutting mode, and the screw adjusting mechanism is used for adjusting the distance between the movable conducting rod and the insulating pull rod to achieve connection and disconnection of a circuit. And a nut fixing mechanism and a screw adjusting mechanism are integrated, so that carrying and operation are convenient, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power switch equipment debugging tools, in particular to a special tool for adjusting the height of an insulating pull rod of a circuit breaker. Background Art

[0002] The 10kV outdoor vacuum pole-mounted circuit breaker is a primary device used in high-voltage power systems. Its operating principle is to use an operating mechanism to drive the three-phase insulating rods (ABC) up and down. This in turn drives the movable conductive rod of the vacuum interrupter up and down, closing the two contacts in the vacuum interrupter, thereby completing the circuit. The downward movement of the movable conductive rod separates the two contacts in the interrupter, generating an arc between them. This arc extinguishes when the current naturally crosses zero, thus breaking the circuit. However, if the distance between the two contacts is too small, the arc will not be completely extinguished, preventing reliable power outages. While a larger distance can improve the withstand voltage, it will reduce the life of the vacuum interrupter's bellows, thereby affecting the overall service life of the vacuum circuit breaker. Existing pole-mounted circuit breaker installation requires manual control of the distance between the two contacts.

[0003] At present, the main adjustment method is to manually use a flat-blade screwdriver and an M19 box end wrench to adjust the height of the adjustment nuts of the ABC three-phase circuit breaker, so that the overall distance between the insulating pull rod and the moving conductive rod of the vacuum interrupter is adjusted, thereby adjusting the distance between the moving and static contacts between the vacuum interrupters. However, during the production and assembly process, it is cumbersome to find tools. In addition, due to the relatively narrow space between the phase brackets, it is difficult to use the M19 box end wrench. Continuous use can easily cause physical fatigue and sore hands of the user. When the assembly starts in the morning, the bolts are tightened in place. After a period of continuous use, the bolts are not tightened in place due to human fatigue. In addition, the tightening of bolts currently depends entirely on the personal experience of the assembly technician, and the bolts may not be tightened in place. Excessive force on the upper end may cause the lower end fastening part to loosen, resulting in rework, which is time-consuming and labor-intensive. In addition, the use of a bare flat-blade screwdriver may cause injuries due to improper use. In the process of turning, it is easy to forget the number of turns you have turned the bolt, and you are not sure how many more turns you need to turn up or down, thereby increasing the assembly time. Utility Model Content

[0004] In order to solve the problems of inaccurate adjustment and inconvenient operation in the prior art, the present application provides a special tool for adjusting the height of the insulating pull rod of a circuit breaker.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted in this application is: a special tool for adjusting the height of the insulating pull rod of the circuit breaker, comprising: a nut fixing mechanism, the nut fixing mechanism includes a guide cylinder and a load-bearing handle, the load-bearing handle is arranged on the guide cylinder, and the guide cylinder is provided with a locking ring for driving the nut to rotate at one end away from the load-bearing handle; a screw adjustment mechanism, the screw adjustment mechanism includes a cutter head, a guide rod and a driving handle, the cutter head is arranged at one end of the guide rod, and the driving handle is arranged at the end of the guide rod away from the cutter head, the cutter head is located in the guide cylinder, and the cutter head can abut against the groove pre-opened at the end of the screw.

[0006] In some embodiments of the present invention, a return spring is provided between the guide rod and the guide cylinder, one end of the return spring is fixed to the guide cylinder, and the other end of the return spring is rotatably provided on the outer wall of the guide rod.

[0007] In some embodiments of the present invention, a rotating ring is provided at one end of the return spring away from the guide cylinder, and a receiving groove adapted to the rotating ring is provided on the guide rod.

[0008] In some embodiments of the present invention, a counter for counting the number of rotations of the cutter head is provided between the driving handle and the guide cylinder.

[0009] In some embodiments of the present invention, the above-mentioned counter includes a signal emitting end, a signal receiving end and a display panel. The signal emitting end is arranged on the driving handle, and the signal receiving end and the display panel are both arranged on the guide tube. The signal emitting end and the signal receiving end are both communicatively connected to the display panel.

[0010] Beneficial effects:

[0011] 1. The above-mentioned nut fixing mechanism is used to drive the nut to rotate and fix the screw against the insulating pull rod. The above-mentioned screw adjustment mechanism is used to adjust the distance between the movable conductive rod and the insulating pull rod to achieve the conduction and disconnection of the circuit. Integrating the nut fixing mechanism and the screw adjustment mechanism is easy to carry and operate, thereby improving the convenience of operation.

[0012] 2. A counter for calculating the number of rotations of the cutter head is provided between the driving handle and the guide cylinder. The counter is used to record the number of rotations of the driving handle by the operator, so as to facilitate the precise adjustment of the screw position according to the position of the insulating pull rod of the vacuum circuit breaker, thereby effectively improving the efficiency of the adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic diagram of the structure of the embodiment of the present application Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the structure of the embodiment of the present application Figure 2 ;

[0016] Figure 3 This is a cross-sectional view of an embodiment of the present application.

[0017] In the figure: 1-guide cylinder; 2-load-bearing handle; 3-locking ring; 4-cutter head; 5-guide rod; 6-driving handle; 7-reset spring; 8-rotating ring; 9-signal sending end; 10-signal receiving end; 11-display panel. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without making any creative efforts shall fall within the scope of protection of the present application.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0021] In the description of this application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0022] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not necessarily imply that a component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical" and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0023] It should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] Example

[0025] Please refer to Figure 1-Figure 3 This embodiment provides a special tool for adjusting the height of the insulating pull rod of a circuit breaker, including: a nut fixing mechanism, the nut fixing mechanism includes a guide cylinder 1 and a load-bearing handle 2, the load-bearing handle 2 is arranged on the guide cylinder 1, and the guide cylinder 1 is provided with a locking ring 3 for driving the nut to rotate at one end away from the load-bearing handle 2; a screw fixing mechanism, the screw fixing mechanism includes a cutter head 4, a guide rod 5 and a driving handle 6, the cutter head 4 is arranged at one end of the guide rod 5, and the driving handle 6 is arranged at the end of the guide rod 5 away from the cutter head 4, the cutter head 4 is located in the guide cylinder 1, and the cutter head 4 can abut against the groove pre-opened at the end of the screw.

[0026] In this embodiment, the nut fixing mechanism is used to drive the nut to rotate and fix the screw against the insulating pull rod. Specifically, the guide cylinder 1 is used to be sleeved on the nut to be driven, and the inner wall of the locking ring 3 is adapted to the outer wall size of the nut to be driven, so that the nut is rotated and fixed by driving the guide cylinder 1 to rotate. The load-bearing handle 2 is used to form a lever structure with the guide cylinder 1 as the fulcrum, which is used to drive the rotation of the nut with effort, thereby fixing the moving conductive rod through the nut.

[0027] In this embodiment, the screw adjustment mechanism is used to adjust the distance between the moving conductive rod and the insulating pull rod, thereby enabling and disconnecting the circuit. The integration of the nut fixing mechanism and the screw adjustment mechanism facilitates portability and operation, improving operational convenience. Specifically, the insulating blade head 4 is an I-shaped structure, adapted to fit within a notch on the moving conductive rod. The operator grips the drive handle 6 and rotates it to rotate the moving conductive rod. The guide rod 5 is used to transmit the kinetic energy output by the gripping handle.

[0028] Please refer to Figure 1-Figure 3 In some implementations of this embodiment, a return spring 7 is provided between the guide rod 5 and the guide cylinder 1 , one end of the return spring 7 is fixed on the guide cylinder 1 , and the other end of the return spring 7 is rotatably provided on the outer wall of the guide rod 5 .

[0029] In this embodiment, the reset spring 7 is used to automatically reset the screw fixing mechanism as a whole after the operator completes the operation, so as to facilitate secondary use and improve the convenience of use.

[0030] Please refer to Figure 1-Figure 3 In some implementations of this embodiment, a rotating ring 8 is provided at one end of the return spring 7 away from the guide cylinder 1 , and a receiving groove adapted to the rotating ring 8 is provided on the guide rod 5 .

[0031] In this embodiment, the rotating ring 8 is used to rotate freely on the outer surface of the guide rod 5, and the rotating ring 8 is limited by the accommodating groove to prevent the reset spring 7 from being twisted when the guide rod 5 is rotated, which can effectively protect the reset spring 7 and improve its service life.

[0032] Please refer to Figure 1-Figure 3 In some implementations of this embodiment, a counter for counting the number of rotations of the cutter head 4 is provided between the driving handle 6 and the guide cylinder 1 .

[0033] In this embodiment, the counter is used to count the number of rotations of the driving handle 6, thereby greatly improving the number of rotations of the driving handle 6, thereby calculating the number of rotations of the conductive rod and improving its control accuracy.

[0034] Please refer to Figure 1-Figure 3In some implementations of this embodiment, the above-mentioned counter includes a signal emitting end 9, a signal receiving end 10 and a display panel 11. The signal emitting end 9 is set on the driving handle 6, and the signal receiving end 10 and the display panel 11 are both set on the guide cylinder 1. The signal emitting end 9 and the signal receiving end 10 are both communicatively connected to the display panel 11.

[0035] In this embodiment, the signal emitting end 9 is an infrared emitter for emitting infrared light. The signal receiving end 10 is for receiving infrared light. During use, whenever the infrared emitting end of the driving handle 6 faces the signal receiving end 10 on the guide cylinder 1, it indicates that the driving handle 6 has rotated one circle, and the display panel 11 counts accordingly, making it easier for the operator to read and improving accuracy during actual operation.

[0036] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A special tool for adjusting the height of the insulating rod of a circuit breaker, characterized in that: include: A nut fixing mechanism, comprising a guide cylinder (1) and a load-bearing handle (2), wherein the load-bearing handle (2) is arranged on the guide cylinder (1), and a locking ring (3) for driving the nut to rotate is arranged at one end of the guide cylinder (1) away from the load-bearing handle (2); A screw adjustment mechanism comprises a cutter head (4), a guide rod (5) and a driving handle (6); the cutter head (4) is arranged at one end of the guide rod (5); the driving handle (6) is arranged at the end of the guide rod (5) away from the cutter head (4); the cutter head (4) is located in the guide cylinder (1), and the cutter head (4) can abut against a groove pre-opened at the end of the screw.

2. A special tool for adjusting the height of the insulating pull rod of a circuit breaker according to claim 1, characterized in that: A return spring (7) is provided between the guide rod (5) and the guide cylinder (1), one end of the return spring (7) is fixed to the guide cylinder (1), and the other end of the return spring (7) is rotatably provided on the outer wall of the guide rod (5).

3. A special tool for adjusting the height of the insulating pull rod of a circuit breaker according to claim 2, characterized in that: A rotating ring (8) is provided at one end of the return spring (7) away from the guide cylinder (1), and a receiving groove adapted to the rotating ring (8) is provided on the guide rod (5).

4. A special tool for adjusting the height of the insulating pull rod of a circuit breaker according to claim 1, characterized in that: A counter for counting the number of rotations of the cutter head (4) is provided between the driving handle (6) and the guide cylinder (1).

5. A special tool for adjusting the height of the insulating pull rod of a circuit breaker according to claim 4, characterized in that: The counter comprises a signal emitting end (9), a signal receiving end (10) and a display panel (11); the signal emitting end (9) is arranged on the driving handle (6); the signal receiving end (10) and the display panel (11) are both arranged on the guide cylinder (1); and the signal emitting end (9) and the signal receiving end (10) are both communicatively connected to the display panel (11).

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