Circuit breaker replacement tooling

Abstract

The application provides a circuit breaker replacement tool, which comprises a base, a connecting frame, a lifting assembly and a supporting arm assembly. The base is provided with casters. The connecting frame is installed on the base. The lifting assembly comprises a lifting mechanism and a support. The lifting mechanism is installed on the base. The support is connected with the top end of the lifting mechanism. A sliding rod is installed on the support. The supporting arm assembly comprises two supporting arms. Each supporting arm comprises a connecting part, a supporting part and a limiting part. The supporting part and the limiting part are connected with the connecting part. The connecting part is in sliding connection with the sliding rod. The supporting part is configured to support the bottom of the circuit breaker. The limiting part is configured to abut against the side surface of the circuit breaker. The circuit breaker replacement tool has high universality and can carry circuit breakers with different sizes.

Description

Technical Field

[0001] This application relates to the field of power equipment maintenance technology, and in particular to a circuit breaker replacement tool. Background Technology

[0002] Electrical equipment is typically equipped with circuit breakers to manually or remotely connect or disconnect circuits, enabling normal operation and decommissioning of the equipment. After the electrical equipment is put into operation, the circuit breakers require regular maintenance.

[0003] Currently, to avoid problems such as poor positioning accuracy, high risk of workplace injury, and low efficiency caused by manually handling circuit breakers, general-purpose forklifts or rail-mounted trolleys can be used to transport circuit breakers. However, general-purpose forklifts or rail-mounted trolleys have poor versatility and are difficult to use to transport circuit breakers of different sizes. Utility Model Content

[0004] This application provides a circuit breaker replacement fixture, which is highly versatile and can carry circuit breakers of different sizes.

[0005] This application provides a circuit breaker replacement fixture, including:

[0006] The base is equipped with casters.

[0007] Connector bracket, mounted on the base;

[0008] A lifting assembly includes a lifting mechanism and a support component. The lifting mechanism is mounted on a base, and the support component is connected to the top of the lifting mechanism.

[0009] The slide bar is mounted on the support member;

[0010] The support arm assembly includes two support arms, each of which includes a connecting part, a supporting part, and a limiting part. The supporting part and the limiting part are respectively connected to the connecting part. The connecting part is slidably connected to a slide rod. The supporting part is configured to support the bottom of the circuit breaker, and the limiting part is configured to abut against the side of the circuit breaker.

[0011] In one embodiment, the slide bar is a circular bar that passes through the top of the connector, and the bottom of the connector is configured to abut against the support.

[0012] In one embodiment, a retaining spring is attached to the slide bar;

[0013] Along the axial direction of the slide rod, the two opposite sides of the connecting part abut against a retaining spring.

[0014] In one embodiment, the support arm assembly further includes fasteners;

[0015] The limiting part has a threaded hole, the fastener passes through the threaded hole and is threadedly connected to the threaded hole, and the end of the fastener facing the circuit breaker abuts against the side of the circuit breaker.

[0016] In one embodiment, the support member is provided with multiple mounting seats, the slide rod passes through the multiple mounting seats, and each support arm is located between two adjacent mounting seats.

[0017] In one embodiment, a marking line is provided on the support, and the marking line extends parallel to the axial direction of the slide rod.

[0018] In one embodiment, an anti-slip layer is provided on the top of the support and / or the side of the limiting portion facing the circuit breaker.

[0019] In one embodiment, two casters are provided on the front side and the rear side of the base, and the two casters on the front side of the base are swivel wheels.

[0020] In one embodiment, the lifting stroke of the lifting assembly is 500mm-700mm.

[0021] In one embodiment, a limiting section is provided at the end of the limiting portion away from the connecting portion, and the limiting sections of the two support arms are arranged opposite to each other, with the limiting sections configured to abut against the side of the circuit breaker away from the connecting portion.

[0022] The circuit breaker replacement fixture provided in this application embodiment allows for precise positioning of the support arm assembly by adjusting its height via a lifting component. This reduces the adjustment time during circuit breaker installation and disassembly, improving installation accuracy and efficiency. A sliding rod is mounted on the support of the lifting component. The circuit breaker can be supported by the support arm assembly. The support arm assembly includes two arms, each comprising a connecting part, a supporting part, and a limiting part. The support arm assembly supports the circuit breaker via the supporting parts of the two arms. The limiting parts of the two arms, after abutting against the circuit breaker, restrict the circuit breaker's movement along the width direction of the replacement fixture, preventing the circuit breaker from detaching from the arms. The connecting parts of the arms are slidably connected to the sliding rod. Adjusting the position of the two arms on the sliding rod adjusts the distance between them, allowing the distance between the limiting parts to match the circuit breaker's dimensions. Thus, the circuit breaker replacement fixture can carry circuit breakers of different sizes, exhibiting high versatility. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of this application, the drawings used in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the circuit breaker after the tooling is replaced with a circuit breaker according to an embodiment of this application;

[0025] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0026] Figure 3 for Figure 1 The front view;

[0027] Figure 4 for Figure 1 Side view;

[0028] Figure 5 for Figure 1 Top view.

[0029] Figure label:

[0030] 100. Base; 110. First caster; 120. Second caster;

[0031] 200. Connecting bracket; 210. Handle;

[0032] 300. Lifting assembly; 310. Lifting mechanism; 320. Support component; 321. Mounting base;

[0033] 400. Slide bar;

[0034] 500, support arm; 510, connecting part; 520, support part; 521, marking line; 530, limiting part; 540, fastener;

[0035] 600. Circuit breaker. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0040] Currently, to avoid problems such as poor positioning accuracy, high risk of workplace injury, and low efficiency caused by manually handling circuit breakers, general-purpose forklifts or rail-mounted trolleys can be used to transport circuit breakers. However, general-purpose forklifts or rail-mounted trolleys have poor versatility and are difficult to use to transport circuit breakers of different sizes.

[0041] To address the aforementioned issues, this application provides a circuit breaker replacement fixture. A lifting assembly allows for adjustment of the support arm assembly's height, enabling precise positioning, reducing adjustment time during circuit breaker installation and removal, and improving installation accuracy and efficiency. A sliding rod is mounted on the support of the lifting assembly. The support arm assembly carries the circuit breaker. The support arm assembly includes two arms, each comprising a connecting portion, a supporting portion, and a limiting portion. The support arm assembly supports the circuit breaker via the supporting portions of the two arms. The limiting portions of the two arms, after abutting against the circuit breaker, restrict the circuit breaker's movement along the width of the replacement fixture, preventing it from detaching from the arms. The connecting portions of the arms are slidably connected to the sliding rod. Adjusting the position of the two arms on the sliding rod adjusts the distance between them, allowing the distance between the limiting portions to match the circuit breaker's dimensions. This allows the circuit breaker replacement fixture to carry circuit breakers of different sizes, offering high versatility and improving its utilization rate.

[0042] The specific structure of the circuit breaker replacement fixture provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0043] Reference Figures 1 to 5 As shown in the figure, this application provides a circuit breaker replacement fixture, including a base 100, a connecting frame 200, a lifting assembly 300, a slide bar 400, and a support arm assembly.

[0044] Casters are mounted on the base 100. For example, the base 100 can be formed into an approximate "U" shape, with the opening of the "U" facing the front of the circuit breaker replacement fixture. There can be four casters, which can be arranged at the four corners of the base 100. The casters allow for the movement of the circuit breaker replacement fixture.

[0045] The connecting frame 200 is installed on the base 100. The bottom end of the connecting frame 200 is fixedly connected to the base 100, and the top end of the connecting frame 200 can be equipped with two handles 210. The distance between the two handles 210 can be 50cm. The operator can move the circuit breaker to change the tooling by holding the handles 210.

[0046] The lifting assembly 300 includes a lifting mechanism 310 and a support member 320. The lifting mechanism 310 is mounted on the base 100, and the support member 320 is connected to the top end of the lifting mechanism 310. Specifically, the bottom end of the lifting mechanism 310 is connected to the base 100, and the top end is connected to the support member 320. The height of the support member 320 can be adjusted via the lifting mechanism 310. For example, a hydraulic cylinder or an electric lead screw can be used as the lifting mechanism 310. When the lifting mechanism 310 is a hydraulic cylinder, its cost is lower; when the lifting mechanism 310 is an electric lead screw, its lifting accuracy can be improved to ±0.05mm. For example, the support member 320 includes a base plate and two side plates, which are respectively disposed on opposite sides of the base plate, and a connecting frame 200 extends between the two side plates.

[0047] The slide bar 400 is mounted on the support member 320. Optionally, the axis of the slide bar 400 may extend along the width direction of the circuit breaker replacement fixture.

[0048] The support arm assembly includes two support arms 500, each of which includes a connecting portion 510, a support portion 520, and a limiting portion 530. The support portion 520 and the limiting portion 530 are respectively connected to the connecting portion 510, the connecting portion 510 is slidably connected to the slide rod 400, the support portion 520 is configured to support the bottom of the circuit breaker 600, and the limiting portion 530 is configured to abut against the side of the circuit breaker 600.

[0049] The support arm assembly can support a frame-type circuit breaker, which has a cuboid structure. For example... Figure 1 and Figure 2 As shown, the support portion 520 and the limiting portion 530 respectively along Figure 1 Extending in the direction indicated by the Y-axis, both the support portion 520 and the limiting portion 530 are located on the side of the connecting portion 510 opposite to the support member 320. The end of the support portion 520 is connected to the bottom end of the connecting portion 510, and the end of the limiting portion 530 is connected to the side of the connecting portion 510. The support portion 520 and the limiting portion 530 can be fixed to the connecting portion 510 by welding, or they can be integrally formed into a single piece using a molding process. Understandably, the support arm assembly supports the circuit breaker 600 through the support portions 520 of the two support arms 500. When the limiting portions 530 of the two support arms 500 abut against the opposite sides of the circuit breaker 600, they limit the circuit breaker 600, preventing it from moving along the width direction of the circuit breaker replacement fixture and detaching from the support arm assembly.

[0050] For example, the distance between the limiting parts 530 of the two support arms 500 can be adjusted within the range of 30-55cm. The support arm assembly can be adapted to circuit breakers 600 with a standard width of 45cm and an error of ±5cm, which expands the applicability range by 30% compared to fixed-width general-purpose tooling.

[0051] For example, the limiting part 530 along Figure 1 The dimension in the direction indicated by the X-axis can be 1 cm, and the limiting part 530 is along... Figure 1 The dimension in the direction indicated by the Y-axis can be 60mm, and the limiting part 530 is along... Figure 1 The dimension in the direction indicated by the Z-axis can be 6cm. The limiting part 530 can be set 10cm above the support part 520, precisely matching the 45cm height of the circuit breaker 600.

[0052] Optionally, the base 100 and support arm assembly of the circuit breaker replacement fixture can be made of sturdy and durable steel as the main material to ensure that the circuit breaker replacement fixture has sufficient load-bearing capacity and stability to safely support circuit breakers 600 of different specifications.

[0053] The circuit breaker replacement fixture provided in this embodiment can support the circuit breaker 600 via a support arm assembly. Casters on the base 100 of the fixture allow workers to push it forward, facilitating the replacement and transport of the circuit breaker 600 outdoors or inside wind turbine units. Those skilled in the art will understand that, because the connecting portion 510 of the support arm 500 is slidably connected to the slide rod 400, the distance between the limiting portions 530 of the two support arms 500 can be adjusted by sliding the support arm 500 to adjust its position on the slide rod 400. This allows the distance between the two limiting portions 530 to match the width of the circuit breaker 600, thus enabling the circuit breaker replacement fixture to carry circuit breakers 600 of different sizes, demonstrating high versatility.

[0054] When using the circuit breaker replacement fixture, first push it to the position of the circuit breaker 600 to be replaced and secure it. Then, operate the lifting assembly 300 to adjust the support arm assembly to a suitable height, matching the installation height of the circuit breaker 600. Next, after accurately aligning the support arm assembly with the circuit breaker 600, the operator can safely and conveniently remove the old circuit breaker 600 and install the new circuit breaker 600 in the designated position. Finally, operate the circuit breaker replacement fixture to reset the support arm assembly, completing the replacement of the entire circuit breaker 600.

[0055] The circuit breaker replacement fixture provided in this embodiment offers several advantages. First, its high mobility solves the problem of difficult handling of the circuit breaker 600 during traditional replacement processes, saving significant labor costs. Second, the lifting assembly 300 is easy to operate; workers can easily raise and lower the support arm assembly without complex training. The overall weight of the circuit breaker replacement fixture can be kept below 50kg, a 50% reduction compared to a hydraulic forklift with the same load capacity. Combined with the handle 210 on the connecting frame 200, it allows for easy lifting by two people.

[0056] Furthermore, the circuit breaker replacement fixture can accurately adjust the height of the support arm assembly via the lifting mechanism 310 of the lifting assembly 300, ensuring it aligns with the installation position of the circuit breaker 600, facilitating disassembly and installation of the circuit breaker 600. The lifting assembly 300 achieves precise alignment within ±1mm, improving the installation accuracy and efficiency of the circuit breaker 600. The circuit breaker replacement fixture enables a "one-stop" operation from lifting, raising, moving, and positioning for installation, eliminating the need for tool switching and simplifying the process.

[0057] In one embodiment, such as Figure 1 and Figure 2 As shown, the slide bar 400 is a circular bar that passes through the top of the connecting part 510, and the bottom of the connecting part 510 is configured to abut against the support member 320.

[0058] Specifically, the top of the connecting part 510 has a through hole through which the slide rod 400 passes. The slide rod 400 is a circular rod, meaning its cross-sectional shape is circular. After the slide rod 400 passes through the connecting part 510, the support arm 500 can rotate around the axis of the slide rod 400. When the circuit breaker 600 is supported on the support arm 500, under the weight of the support arm 500 and the circuit breaker 600, the bottom of the connecting part 510 abuts against the support member 320.

[0059] In this embodiment, when the circuit breaker replacement fixture needs to be moved, the two support arms 500 can be flipped upwards to reduce the space occupied by the replacement fixture, making it easier to move the fixture outdoors or into the wind turbine unit, adapting to the outdoor and wind turbine unit operating environments for replacing the circuit breaker 600. Furthermore, the slide rod 400 and support member 320 provide reliable support for the support arms 500, ensuring that the support arm assembly can stably support the circuit breaker 600.

[0060] Optionally, after the circuit breaker 600 is placed on the support arm assembly, the support arm 500 can be rotated upwards at a certain angle around the slide bar 400. A fixing component, such as a pad, can be installed between the bottom of the connecting part 510 and the support member 320 to support the support arm 500 and fix its angle. In this way, the angle of the support arm 500 can match the layout of different power equipment, further improving the versatility of the circuit breaker replacement fixture.

[0061] In one possible implementation, a retaining ring (not shown) is attached to the slide bar 400. Along the axial direction of the slide bar 400, each of the opposite sides of the connecting portion 510 abuts against a retaining ring.

[0062] For example, the slide rod 400 is provided with multiple annular grooves, each annular groove being arranged around the axis of the slide rod 400, and the multiple annular grooves being spaced apart along the axial direction of the slide rod 400. When a retaining ring is engaged in a corresponding annular groove, the annular groove can limit the retaining ring, preventing the retaining ring from moving along the axial direction of the slide rod 400. When the connecting part 510 of the support arm 500 slides on the slide rod 400 between two adjacent annular grooves, retaining rings can be engaged in the annular grooves on both sides of the connecting part 510. By clamping the connecting part 510 of the support arm 500 with two retaining rings, the connecting part 510 can be limited, preventing the connecting part 510 from moving along the axial direction of the slide rod 400.

[0063] With the above settings, when the connecting part 510 of the support arm 500 slides to a preset position relative to the slide rod 400, the support arm 500 can be limited to restrict the axial movement of the support arm 500 along the slide rod 400, ensuring that the limiting part 530 of the support arm 500 reliably limits the circuit breaker 600.

[0064] like Figure 1 , Figure 2 and Figure 4 As shown, the support arm assembly also includes a fastener 540. A threaded hole is provided on the limiting part 530, the fastener 540 passes through the threaded hole and is threadedly connected to the threaded hole, and the end of the fastener 540 facing the circuit breaker 600 abuts against the side of the circuit breaker 600.

[0065] For example, a bolt can be used as the fastener 540, with the bolt shank passing through and threaded into a threaded hole. The limiting portion 530 may have multiple threaded holes, which are arranged along... Figure 1 Extending in the direction indicated by the Y-axis, each threaded hole is equipped with a fastener 540.

[0066] In this embodiment, after the circuit breaker 600 extends between the limiting portions 530 of the two support arms 500, the circuit breaker 600 can be clamped by rotating the bolts on the limiting portions 530 on both sides of the circuit breaker 600. This ensures that the locking force of the support arm assembly on the circuit breaker 600 is not less than 500N. When the circuit breaker 600 is subjected to inertial impact, it can resist the inertial impact force and prevent the circuit breaker 600 from coming forward out of the support arm assembly. When disassembling the circuit breaker 600 from the power equipment, it can also assist in pulling out the circuit breaker 600 that is stuck or difficult to disassemble. That is, after part of the circuit breaker 600 extends out of the power equipment, the fasteners 540 on the two limiting portions 530 can be used to clamp the circuit breaker 600. The operator can then pull the circuit breaker outward and remove it from the power equipment by changing the tooling.

[0067] In one embodiment, such as Figure 2 and Figure 5 As shown, the support member 320 is provided with multiple mounting seats 321, the slide rod 400 passes through the multiple mounting seats 321, and each support arm 500 is located between two adjacent mounting seats 321.

[0068] For example, the mounting base 321 can be a plate-like structure, with multiple mounting bases 321 arranged parallel to each other, and each mounting base 321 having a through hole for the slide rod 400 to pass through. Optionally, the mounting base 321 and the base plate of the support member 320 can be integrally formed using a one-piece molding process. The number of mounting bases 321 is not limited, and those skilled in the art can set it as needed.

[0069] In this embodiment, the mounting base 321 can limit the connecting part 510 on the slide rod 400, that is, limit the travel of the support arm 500 on the slide rod 400, and at the same time prevent the support arm 500 from falling off the support member 320.

[0070] In one possible implementation, there can be three mounting bases 321. Two mounting bases 321 located at the edges are respectively disposed on the two side plates of the support member 320. By disassembling the side plates of the support member 320, the connecting part 510 of the support arm 500 can be removed from the slide rod 400. In this way, the slide rod 400 can be connected to support arms 500 of different sizes.

[0071] In one embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, a marking line 521 is provided on the support part 520, and the extension direction of the marking line 521 is parallel to the axial direction of the slide rod 400.

[0072] The marking line 521 can be set on the top surface of the support 520. Optionally, when the length of the support 520 is 60cm, the marking line 521 can be set at a position 22.5cm from the front end of the support 520. After the circuit breaker 600 is placed on the support arm assembly, the center position of the circuit breaker 600 must correspond to the marking line 521. In this way, the overall center of gravity of the circuit breaker replacement fixture and the circuit breaker 600 is reasonably positioned, preventing the circuit breaker replacement fixture from tipping over during the transportation of the circuit breaker 600 and avoiding injury to the equipment or personnel.

[0073] By setting the marking line 521 on the support 520, it is not necessary to repeatedly adjust the front and rear position of the circuit breaker 600 on the support arm assembly to set the circuit breaker replacement tooling and the overall center of gravity of the circuit breaker 600. Compared with general forklifts or rail-mounted trolleys, the center of gravity adjustment time can be shortened to within 10 seconds, improving work efficiency.

[0074] In one possible implementation, the top of the support portion 520 and / or the limiting portion 530 facing the side of the circuit breaker 600 are provided with an anti-slip layer.

[0075] Specifically, the anti-slip layer can be provided only on the top of the support portion 520, or only on the side of the limiting portion 530 facing the circuit breaker 600. Alternatively, anti-slip layers can be provided on both the support portion 520 and the limiting portion 530. For example, a 5mm thick rubber pad can be used as the anti-slip layer, and the rubber pad is fixed to the support portion 520 and / or the limiting portion 530. In other embodiments, anti-slip textures can also be provided on the support portion 520 and / or the limiting portion 530, and the portion of the support portion 520 and / or the limiting portion 530 with anti-slip textures can serve as the anti-slip layer.

[0076] The anti-slip layer increases the friction between the support portion 520 and / or the limiting portion 530 and the circuit breaker 600, allowing the support arm assembly to more stably fix the circuit breaker 600 and achieve safety protection for the circuit breaker 600. When rubber pads are used as an anti-slip layer, they can also provide some protection for the circuit breaker 600, reducing the scraping of the circuit breaker 600 by the support portion 520 and / or the limiting portion 530. When the rubber pads are placed on the limiting portion 530, the rubber pads on the two limiting portions 530 can completely cover both sides of the circuit breaker 600, and the anti-slip effect can be improved by 80% compared to general forklifts. When the rubber pads are placed on the support portion 520, the coefficient of friction at the top of the support portion 520 can be increased to 0.8, which is more than 60% higher than the coefficient of friction of the metal contact surface of general load-bearing tooling (0.3-0.5).

[0077] In one possible implementation, the support portion 520 of the support arm 500 may have a protrusion, and correspondingly, the bottom of the circuit breaker 600 has a groove. When the circuit breaker 600 moves sequentially to a preset position on the support portion 520, the protrusion extends into the groove. The cooperation between the protrusion and the groove further restricts the movement of the circuit breaker 600 along the width direction of the circuit breaker changing fixture. Utilizing the cooperation between the protrusion and the groove, along with an anti-slip layer, a three-dimensional protection can be formed for the circuit breaker 600, reducing the risk of the circuit breaker 600 slipping by more than 90% compared to a general forklift.

[0078] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, two casters are provided on the front side and the rear side of the base 100, and the two casters on the front side of the base 100 are swivel wheels.

[0079] Among them, the two casters located on the front side of the base 100 are the first casters 110, and the two casters located on the rear side of the base 100 are the second casters 120. Both first casters 110 are swivel wheels, and the first casters 110 can rotate as needed.

[0080] The above-mentioned design makes the circuit breaker replacement tool easy to move in confined spaces, allowing a single person to adjust it, thus improving the convenience of the circuit breaker replacement tool.

[0081] In one possible implementation, the casters are equipped with brakes. Once the circuit breaker replacement fixture has moved to a preset position, the operator can depress the brakes to secure it and prevent it from tipping over. In other embodiments, once the circuit breaker replacement fixture has moved to the preset position, the operator can adjust the casters to rotate them 90° around the vertical direction, preventing the fixture from moving back and forth and similarly preventing it from tipping over.

[0082] In one possible implementation, the lifting stroke of the lifting assembly 300 is 500mm-700mm. The lifting stroke of the lifting assembly 300 can be 500mm, 550mm, 600mm, 650mm, or 700mm, etc., and is not limited to a single value. For example, when the lifting stroke of the lifting assembly 300 is 600mm, the lifting assembly 300 can drive the support portion 520 of the support arm 500 to rise and fall within a range of 600mm-1200mm from the ground.

[0083] When the lifting stroke of the lifting assembly 300 is less than 500mm, the circuit breaker replacement tooling is difficult to accurately match the height requirement of the circuit breaker 600 from the ground to the installation position on the power equipment; when the lifting stroke of the lifting assembly 300 is greater than 700mm, the cost of the lifting mechanism 310 is high, which increases the cost of the circuit breaker replacement tooling.

[0084] In other words, the above settings can enable the support arm assembly to accurately match the height requirements of the circuit breaker 600 from the ground to the installation position on the power equipment, reduce unnecessary operations, improve efficiency, and control the cost of replacing the circuit breaker tooling.

[0085] In one possible implementation, a limiting section is provided at the end of the limiting part 530 away from the connecting part 510, and the limiting sections of the two support arms 500 are arranged opposite to each other, with the limiting sections configured to abut against the side of the circuit breaker 600 away from the connecting part 510.

[0086] Schematic, each limiting part 530 is formed into an approximate "L" shape, with one end of the "L" shape connected to the connecting part 510, and the other ends of the two "L" shapes facing each other. Along the width direction of the circuit breaker replacement fixture, the size of the limiting section is smaller than the size of the support part 520, ensuring that the support part 520 can reliably support the circuit breaker 600 when it passes through the limiting section.

[0087] During the use of the circuit breaker replacement fixture, the width between the limiting sections 530 of the two support arms 500 is first set to be greater than the width of the circuit breaker 600, allowing the circuit breaker 600 to pass over the limiting sections of the limiting sections 530 and be placed on the support sections 520 of the support arms 500. After the circuit breaker 600 passes over the limiting sections, the two support arms 500 are controlled to move closer together so that the limiting sections 530 of the two support arms 500 abut against the sides of the circuit breaker 600. At this time, the limiting sections of the two limiting sections 530 can abut against the front side of the circuit breaker 600.

[0088] With the above settings, the limiting section of the limiting part 530 can block the circuit breaker 600 on the support arm assembly, preventing the circuit breaker 600 from moving forward and detaching from the support arm assembly during the process of the circuit breaker replacement tool carrying the circuit breaker 600 and moving, thus achieving safety protection for the circuit breaker 600.

[0089] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A circuit breaker replacement fixture, characterized in that, include: A base, on which casters are mounted; The connecting bracket is mounted on the base; A lifting assembly includes a lifting mechanism and a support member, wherein the lifting mechanism is mounted on the base and the support member is connected to the top end of the lifting mechanism; A sliding rod is mounted on the support member; The support arm assembly includes two support arms, each of which includes a connecting portion, a supporting portion, and a limiting portion. The supporting portion and the limiting portion are respectively connected to the connecting portion. The connecting portion is slidably connected to the slide rod. The supporting portion is configured to support the bottom of the circuit breaker, and the limiting portion is configured to abut against the side of the circuit breaker.

2. The circuit breaker replacement fixture according to claim 1, characterized in that, The slide bar is a circular rod that passes through the top of the connecting part, and the bottom of the connecting part is configured to abut against the support member.

3. The circuit breaker replacement fixture according to claim 2, characterized in that, A retaining spring is fitted onto the slide rod; Along the axial direction of the slide rod, the opposite sides of the connecting portion abut against one of the retaining springs.

4. The circuit breaker replacement fixture according to claim 3, characterized in that, The support arm assembly also includes fasteners; The limiting part has a threaded hole, the fastener passes through the threaded hole and is threadedly connected to the threaded hole, and the end of the fastener facing the circuit breaker abuts against the side of the circuit breaker.

5. The circuit breaker replacement fixture according to claim 1, characterized in that, The support member is provided with multiple mounting seats, the slide rod passes through the multiple mounting seats, and each of the support arms is located between two adjacent mounting seats.

6. The circuit breaker replacement fixture according to claim 1, characterized in that, The support portion is provided with a marking line, and the marking line extends parallel to the axial direction of the slide rod.

7. The circuit breaker replacement fixture according to claim 1, characterized in that, An anti-slip layer is provided on the top of the support and / or on the side of the limiting part facing the circuit breaker.

8. The circuit breaker replacement fixture according to claim 1, characterized in that, Two casters are respectively provided on the front side and the rear side of the base, and the two casters on the front side of the base are swivel wheels.

9. The circuit breaker replacement fixture according to claim 1, characterized in that, The lifting stroke of the lifting assembly is 500mm-700mm.

10. The circuit breaker replacement fixture according to claim 1, characterized in that, The limiting part is provided with a limiting section at the end away from the connecting part, and the limiting sections of the two support arms are arranged opposite to each other. The limiting section is configured to abut against the side of the circuit breaker away from the connecting part.

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