A tool for circuit breaker withdrawal operation

Abstract

The utility model relates to power equipment maintenance technical field discloses a tool for circuit breaker to quit operation, including base assembly, lifting frame, lifting guide component and lifting drive arrangement, the bottom of base assembly is provided with the gyro wheel with locking mechanism, the upper portion of base assembly is installed with the lifting drive arrangement for controlling lifting frame and is adjusted to go up and down, the output of lifting drive arrangement is fixedly connected with the bottom of lifting frame, lifting frame bottom and base assembly upper end between setting up have lifting guide component, the upside of fixedly being provided with the inverted trapezoidal saddle for supporting circuit breaker body and being open mouthed on lifting frame, three connecting plates of setting up bolted connection hole are separately arranged on inverted trapezoidal saddle, the connecting plate is used for being connected with circuit breaker flange through bolt, and the support rib plate of connecting inverted trapezoidal saddle and lifting frame is set up in the position directly below connecting plate.

Description

Technical Field

[0001] This utility model relates to the field of power equipment maintenance technology, and in particular to a tooling for circuit breaker removal operations. Background Technology

[0002] Circuit breakers in power systems, as core equipment ensuring the safe and stable operation of the system, bear the important responsibility of preventing accidents caused by electrical faults such as overloads and short circuits. In the operation and maintenance process of power equipment, the regular inspection, replacement, and decommissioning of circuit breakers are crucial links in ensuring system reliability. To ensure the safety and accuracy of decommissioning operations, specialized tooling and equipment are usually required, especially for high-voltage power equipment such as GIS (Gas Insulated Switchgear), whose tooling must meet stringent standards in terms of adjustment accuracy and support stability. However, current circuit breaker decommissioning tooling still has significant shortcomings, particularly in terms of adjustment accuracy and structural stability, which are insufficient to meet the requirements of high-precision operations.

[0003] Existing tooling generally faces two core problems: First, for the removal of lightweight circuit breakers, the tooling lacks the ability to accurately and conveniently adjust the removal position and local posture, leading to positional deviations during operation. Second, the fastening structure between the tooling frame and the circuit breaker lacks an effective limiting structure, and the base of the tooling frame lacks reinforced support design, which can easily cause equipment displacement or support failure under complex working conditions. Specifically, most tooling uses a simple mechanical structure, the adjustment process is cumbersome and lacks precision, making it difficult to achieve highly accurate control when removing GIS circuit breakers; in special working environments such as vibration or tilt, the tooling often experiences support swaying or even structural instability due to the lack of stability reinforcement design, seriously threatening operational safety and equipment integrity. These defects directly restrict the improvement of the efficiency and quality of high-voltage power equipment operation and maintenance. Utility Model Content

[0004] To address the existing problems, this utility model provides a tooling for circuit breaker removal operations, which aims to provide effective and accurate support while ensuring convenient and stable operation of the circuit breaker removal tooling.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A tooling for circuit breaker removal operations includes a base assembly, a lifting frame, a lifting guide assembly, and a lifting drive device. The base assembly has rollers with locking mechanisms at its bottom. A lifting drive device for controlling the lifting adjustment of the lifting frame is mounted on the upper part of the base assembly. The output end of the lifting drive device is fixedly connected to the bottom end of the lifting frame. A lifting guide assembly is provided between the bottom end of the lifting frame and the upper end of the base assembly. An inverted trapezoidal saddle, open upwards and used to support the circuit breaker body, is fixedly mounted on the lifting frame. Three connecting plates with bolt holes are spaced apart on the inverted trapezoidal saddle. The connecting plates are used to connect to the circuit breaker flange via bolts. A support rib connecting the inverted trapezoidal saddle and the lifting frame is located directly below the connecting plates.

[0007] As a further improvement of this utility model, a thickened plate is provided at the bottom of the inverted trapezoidal saddle corresponding to the position of the supporting rib plate.

[0008] As a further improvement of this utility model, the lifting guide assembly includes four vertically arranged guide columns and four guide sleeves that are slidably engaged with the guide columns. The four guide sleeves are fixedly installed on the upper part of the base assembly and are distributed in a square shape. The guide columns are slidably connected inside the guide sleeves. The top end of the guide column is fixedly connected to the bottom end of the lifting frame. The bottom end of the guide column can be vertically lifted and lowered in the opening space inside the base assembly.

[0009] As a further improvement of this utility model, the lifting drive device includes a handwheel, a transmission mechanism, and a lifting screw coaxially connected to the output end of the transmission mechanism; the handwheel is located at the front end of the upper part of the base assembly, the shaft of the handwheel is connected to the input end of the transmission mechanism through a bearing seat, the output end of the transmission mechanism is connected to the lifting screw, a screw support seat is fixedly installed at the bottom end of the lifting frame, and the upper end of the lifting screw is connected to the screw support seat and connected to the lifting frame through the screw support seat.

[0010] As a further improvement of this utility model, the transmission mechanism is a worm gear transmission mechanism that can reduce speed; the transmission mechanism includes a transmission box, a worm installed in the transmission box, and a worm wheel installed in the transmission box and meshing with the worm. The worm is connected to the shaft of the handwheel, and the worm wheel can cooperate with the connected lifting screw. The bottom end of the lifting screw can be vertically raised and lowered within the opening space in the machine base assembly.

[0011] As a further improvement of this utility model, the base assembly includes a base and a sliding seat. The base is disposed on the sliding seat. A fixing plate for mounting a lifting drive device is fixedly disposed at the middle of the upper end of the base. Rollers with locking mechanisms are respectively installed at the four corners of the bottom end of the sliding seat.

[0012] As a further improvement of this utility model, the base is slidably connected to the sliding seat in a manner that allows it to slide left and right. The upper part of the sliding seat is symmetrically equipped with slide rails, and the lower part of the base is provided with sliders that cooperate with the slide rails.

[0013] As a further improvement of this utility model, a screw mounting seat for connecting the adjusting screw is installed at one of the left or right ends above the sliding seat, and the sliding seat is connected to the machine base through the adjusting screw; an adjusting wheel is fixedly connected to one outer end of the adjusting screw, and the other end of the adjusting screw is connected to a screw support seat provided at the bottom of one side of the machine base.

[0014] As a further improvement of this utility model, the circuit breaker removal tooling is used with one tooling at each end of the circuit breaker when removing the circuit breaker. The circuit breaker removal tooling is equipped with a walking support assembly to guide the movement of the tooling.

[0015] As a further improvement of this utility model, the walking support assembly is used to connect with the wooden pads laid on the ground to support the tooling during use. The walking support assembly includes two parallel sliding tracks on the left and right sides. The sliding tracks are steel structures with square grooves arranged along the length direction. Connecting pieces are evenly arranged on the left and right sides of the sliding tracks. Connecting holes are opened on the connecting pieces to connect the sliding tracks to the wooden pads by bolts.

[0016] This utility model has the following beneficial effects: This basic structure provides overall frame support for circuit breaker removal operations. The base assembly, as the basic load-bearing component, works with rollers at the bottom equipped with locking mechanisms to facilitate tooling movement and lock in place upon reaching the designated position, ensuring tooling stability during operation. The lifting drive device connects to the support frame, enabling the lifting and adjustment of the support frame to meet the removal requirements of circuit breakers at different heights. The lifting guide assembly ensures that the inverted trapezoidal saddle remains vertically stable during lifting, and the support frame itself maintains a stable posture, preventing deviation and improving the accuracy of circuit breaker removal operations. The inverted trapezoidal saddle and connecting plate design on the support frame stably supports the circuit breaker body and is connected to the circuit breaker flange via bolts, ensuring a secure and reliable connection for easy circuit breaker removal. The connecting plate design allows for snap-fit ​​connection with the circuit breaker, achieving effective limiting, and the support ribs increase the anti-overturning capacity of the inverted trapezoidal saddle, preventing significant increases in saddle bending moment under complex working conditions, especially under tilting center of gravity, which could lead to equipment displacement or support failure.

[0017] Preferably, a thickened plate is provided at the bottom of the inverted trapezoidal saddle corresponding to the support rib, which transfers the concentrated stress borne by the connecting plate downwards, effectively dispersing the pressure and preventing deformation or damage to the saddle due to localized stress concentration, thus ensuring support stability. Simultaneously, it works synergistically with the support rib to further enhance the overall structural rigidity.

[0018] Preferably, four guide columns and four guide sleeves are slidably engaged, with the guide sleeves arranged in a square pattern. This structure significantly enhances the guiding accuracy and stability during the lifting and lowering process of the lifting frame. The sliding of the guide columns within the guide sleeves effectively limits the swaying and offset of the lifting frame, ensuring that the lifting frame remains vertically raised and lowered. This guarantees the accurate positioning of the circuit breaker during disengagement, avoiding operational difficulties or equipment damage caused by positional deviations, and improving operational safety and reliability.

[0019] Preferably, the lifting and lowering of the lifting frame is manually controlled through a combination of a handwheel, a transmission mechanism, and a lifting screw. The handwheel is located at the upper front of the base assembly for easy operation by the operator.

[0020] Preferably, the worm gear transmission mechanism has a speed reduction effect, which can reduce the speed of the handwheel rotation and increase the output torque. This makes it easier for the operator to operate the handwheel, especially for heavier circuit breakers, and allows for easy adjustment of the lifting frame. At the same time, the worm gear transmission has a self-locking function, so when the handwheel stops rotating, the lifting frame can be stably maintained at the current height and will not descend on its own due to gravity.

[0021] Preferably, the base is mounted on a sliding seat, which increases the flexibility and adjustability of the tooling structure. This layered design allows the base to move within a certain range on the sliding seat according to actual operational needs, facilitating the adjustment of the relative position of the tooling and the circuit breaker, better adapting to the removal of circuit breakers from different installation positions, and improving the versatility and applicability of the tooling.

[0022] Preferably, the machine base is connected to the sliding seat by a slide rail and a slider to achieve left and right sliding connection. Operators can easily, quickly and accurately adjust the position of the tooling, which improves work efficiency. At the same time, it can also ensure the stability of the machine base during the sliding process and avoid the impact of shaking on the operation.

[0023] Preferably, the design of the adjusting screw provides a precise means of adjusting the left and right sliding of the machine base. Operators can adjust the position of the machine base to meet high-precision operation requirements, enabling the tooling to connect more accurately with the circuit breaker, and improving the quality and success rate of circuit breaker disengagement operations.

[0024] Preferably, a tooling fixture is arranged at each end of the circuit breaker, which can support and remove the circuit breaker from both ends simultaneously. This makes the circuit breaker more evenly stressed during the removal process, avoids tilting or damage to the circuit breaker due to unilateral stress, and improves the safety and stability of the operation.

[0025] Preferably, the walking support assembly is connected to the wooden blocks laid on the ground via a slide rail. The square groove design of the slide rail provides a stable guide track for the movement of the tooling. The connecting holes on the connecting plate facilitate the secure connection of the slide rail to the wooden blocks with bolts, ensuring the stability of the walking support assembly. This structure enables the tooling to obtain reliable support during use, avoiding instability caused by uneven ground or the weight of the tooling itself. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and do not limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 This is a schematic diagram of the structure of a tooling for circuit breaker removal work provided in an embodiment of this application; Figure 2 A schematic diagram of a circuit breaker removal tooling provided in an embodiment of this application on a traveling support assembly; Among them, 100 is the base assembly; 110 is the base; 111 is the fixing plate; 112 is the slider; 120 is the sliding seat; 121 is the slide rail; 122 is the adjusting screw; 123 is the screw mounting seat; 124 is the adjusting wheel; 200 is the lifting frame; 210 is the inverted trapezoidal saddle; 220 is the connecting plate; 230 is the support rib; 240 is the thickened plate; 300 is the lifting guide assembly; 310 is the guide column; 320 is the guide sleeve; 400 is the lifting drive device; 410 is the handwheel; 420 is the transmission mechanism; 430 is the lifting screw; 500 is the roller; 510 is the locking mechanism; 600 is the traveling support assembly; 610 is the slide rail; and 620 is the connecting piece. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0029] Unless otherwise defined below, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] like Figure 1 As shown, a tooling for circuit breaker removal includes a base assembly 100, a lifting frame 200, a lifting guide assembly 300, and a lifting drive device 400. The base assembly 100 has rollers 500 with locking mechanisms 510 at its bottom. The upper part of the base assembly 100 is equipped with a lifting drive device 400 for controlling the lifting adjustment of the lifting frame 200. The output end of the lifting drive device 400 is fixedly connected to the bottom end of the lifting frame 200. A lifting guide assembly 300 is positioned between the bottom end of the lifting frame 200 and the upper end of the base assembly 100. The lifting guide assembly 300 includes four vertically arranged guide columns 310 and four connecting rods respectively connected to the guide columns. Four guide sleeves 320 with sliding fit are fixedly installed on the upper part of the base assembly 100 and distributed in a square shape. One end of the guide column 310 is slidably connected inside the guide sleeve 320, and the other end is fixedly connected to the bottom end of the support frame 200. An inverted trapezoidal saddle 210 with an upward opening is fixedly installed on the support frame 200 to support the circuit breaker body. Three connecting plates 220 with bolt connection holes are spaced apart on the inverted trapezoidal saddle 210. The connecting plates 220 are used to connect to the circuit breaker flange by bolts. A support rib 230 connecting the inverted trapezoidal saddle 210 and the support frame 200 is provided directly below the connecting plate 220. The support rib 230 increases the anti-overturning capacity of the inverted trapezoidal saddle 210 and avoids a significant increase in saddle bending moment under complex working conditions, especially under the overturning center of gravity, which could lead to equipment displacement or support failure. Figure 1As shown, a thickened plate 240 is provided at the bottom of the inverted trapezoidal saddle 210 corresponding to the support rib 230. This thickened plate 240 transfers the concentrated stress borne by the connecting plate 220 downwards, effectively dispersing pressure and preventing deformation or damage to the saddle due to localized stress concentration, thus ensuring support stability. Simultaneously, it works synergistically with the support rib 230 to further enhance the overall structural rigidity.

[0031] In this embodiment, the coordination between the base assembly 100, the lifting frame 200, the lifting guide assembly 300, and the lifting drive device 400 ensures a relatively stable operating state of the device during circuit breaker removal. The rollers 500 with locking mechanisms 510 at the bottom of the base assembly 100 can lock after the tooling has moved to a designated position, thereby reducing the possibility of bottom displacement and lowering the probability of shaking caused by manual operation or tool contact. Simultaneously, the lifting guide assembly 300 employs a sliding engagement of four guide columns 310 and four guide sleeves 320, ensuring that the lifting frame 200 always moves along a fixed guide surface during vertical movement. Therefore, when the lifting frame 200 is adjusted for lifting, its movement trajectory remains relatively stable, reducing uneven load distribution caused by structural offset and contributing to the overall stability of the circuit breaker removal operation.

[0032] Building upon the above, the further coordination between the lifting guide assembly 300 and the lifting drive device 400 enables the lifting frame 200 to exhibit smoother posture changes during lifting and adjustment. Since the four guide columns 310 and the guide sleeve 320 jointly restrict the lateral offset of the lifting frame 200, its vertical movement is primarily constrained by multiple sliding contact surfaces, thus reducing swaying caused by unilateral force. Simultaneously, the fixed connection between the lifting drive device 400 and the bottom of the lifting frame 200 concentrates the power transmitted during lifting, helping to reduce torsional phenomena during screw rotation and ensuring the movement of the lifting frame 200 is closer to the intended direction. This power transmission method improves the convenience of height adjustment to a certain extent, allowing operators to more easily adjust the lifting and lowering of the circuit breaker.

[0033] In the lifting and support section, the inverted trapezoidal saddle 210 in this embodiment adopts an upwardly open structure, gradually expanding outwards from bottom to top to form a space for accommodating the cylindrical circuit breaker flange end. When the circuit breaker is removed, the flange end typically serves as the main load-bearing component. When placed inside the inverted trapezoidal saddle 210, the outward-expanding structure on both sides of the saddle allows the flange end to form three contact points within the saddle, thus achieving a relatively stable support foundation. Based on this support relationship, the connecting plates 220 spaced apart on the saddle 210 can be connected to the circuit breaker flange via bolts, establishing a fixed relationship between the lifting frame 200 and the circuit breaker. Through this combination of support structure and connection method, the circuit breaker is less prone to displacement during lifting, lowering, and movement, contributing to improved overall support reliability during removal operations.

[0034] In some embodiments, the lifting drive device 400 is a manual drive device, which includes a handwheel 410, a transmission mechanism 420, and a lifting screw 430 coaxially connected to the output end of the transmission mechanism 420.

[0035] The handwheel 410 is located at the front end of the upper part of the base assembly 100. The shaft of the handwheel 410 is connected to the input end of the transmission mechanism 420 through the bearing seat. The output end of the transmission mechanism 420 is connected to the lifting screw 430. The lifting screw 430 can rotate under the action of the handwheel 410 and driven by the transmission mechanism 420, so that the lifting frame 200 connected to the lifting screw 430 can be raised and lowered in the vertical direction. The bottom end of the lifting frame 200 is fixedly installed with a screw support seat. The upper end of the lifting screw 430 is connected to the screw support seat and connected to the lifting frame 200 through the screw support seat.

[0036] In this embodiment, the lifting drive device 400 is manually driven, utilizing a handwheel 410, a transmission mechanism 420, and a lifting screw 430 coaxially mounted with its output end to jointly adjust the height of the lifting frame 200. During operation, the operator rotates the handwheel 410 to drive the shaft at the input end of the transmission mechanism 420, allowing power to be transmitted through the transmission mechanism 420 and output to the lifting screw 430. When the lifting screw 430 rotates, its upper end's connection to the screw support allows this rotational motion to be converted into vertical movement of the lifting frame 200, thereby adjusting the height of the lifting frame 200.

[0037] Since the movement of the lifting screw 430 is directly driven by the handwheel 410, the rotation speed can be controlled by the operator during adjustment, making it suitable for applications requiring fine height adjustments. After the adjustment action is output through the transmission mechanism 420, the lifting screw 430 can drive the lifting frame 200 to rise and fall in a relatively stable manner, making the vertical position adjustment of the lifting frame 200 smoother during use. Combined with the screw support seat at the bottom, the lifting screw 430 can maintain a good stress state during operation, reducing sway and helping to improve the reliability of the vertical movement of the lifting frame 200.

[0038] Overall, this embodiment, through the cooperation of the aforementioned structures, makes the control process of the lifting and adjusting action more intuitive, allowing operators to flexibly adjust the height of the lifting frame 200 according to the actual situation. During circuit breaker removal operations, this manual drive method helps reduce the difficulty of loading and unloading caused by improper height adjustment, and reduces the difficulty of adjustment during operation, ensuring the circuit breaker maintains a relatively stable posture during removal or placement.

[0039] In some embodiments, the transmission mechanism 420 is a worm gear transmission mechanism that can reduce speed. The transmission mechanism 420 includes a transmission box, a worm installed in the transmission box, and a worm wheel installed in the transmission box and meshing with the worm. The worm is connected to the shaft of the handwheel 410. The worm wheel can convert the rotation of the handwheel 410 into the rotation of the lifting screw 430 by cooperating with the connected lifting screw 430, so that the lifting frame 200 can be raised and lowered in the vertical direction.

[0040] In this embodiment, the transmission mechanism 420 adopts a worm gear structure, allowing the rotation of the handwheel 410 to change its speed and transmission direction after meshing within the transmission box. The worm is connected to the shaft of the handwheel 410. When the operator rotates the handwheel 410, the worm drives the worm wheel to rotate at a lower speed, and the worm wheel then drives the lifting screw 430, causing the lifting screw 430 to produce a smooth rotational motion. Due to the significant deceleration characteristics of the worm gear transmission, the output change of the handwheel 410 is more gradual after deceleration, making it easier to control the lifting screw 430 during adjustment and facilitating the operator to gradually adjust the height during the lifting process.

[0041] Based on the above, the worm gear meshing is a multi-faceted contact type, resulting in a more uniform force distribution. This structure provides a more stable driving effect on the rotation of the lifting screw 430 during use. The lifting screw 430 operates under relatively uniform power, making the speed change of the lifting frame 200 during vertical movement smoother and reducing vibration caused by instantaneous changes in rotational force. Simultaneously, the worm gear drive features reasonable force distribution and a lighter operating burden in manual adjustment scenarios, allowing operators to achieve continuous rotation without applying significant force, thus facilitating consistent operation during extended adjustments.

[0042] With power transmitted step by step, this embodiment forms a relatively smooth lifting and lowering drive relationship, enabling the lifting frame 200 to exhibit subtle and controllable movement during height adjustment. In this power transmission mode, the lifting and lowering motion is closer to the expected trajectory, helping to reduce potential height deviations during adjustment and thus ensuring smoother lifting and lowering conditions when the circuit breaker is disengaged from operation.

[0043] In some embodiments, the base assembly 100 includes a base 110 and a sliding seat 120. The base 110 is disposed on the sliding seat 120. A fixing plate 111 for mounting a lifting drive device 400 is fixedly disposed at the middle of the upper end of the base 110. Rollers 500 with locking mechanisms 510 are respectively installed at the four corners of the bottom end of the sliding seat 120.

[0044] In this embodiment, the base assembly 100 is jointly composed of a base 110 and a sliding seat 120, which together form the basic load-bearing part of the tooling through an upper and lower fit. The base 110 is positioned above the sliding seat 120, allowing the lifting drive device 400 to be mounted on a relatively stable support surface. The fixing plate 111 is located at the upper center of the base 110, and its main function is to provide an installation position for the lifting drive device 400, giving the drive device a clear fixed reference during operation, thereby forming a relatively clear force transmission path in the overall structural relationship. Through this arrangement, the load of the lifting drive device 400 during operation can be more directly transmitted to the sliding seat 120 through the base 110, providing more continuous mechanical support conditions for the lifting process and facilitating subsequent height adjustment operations.

[0045] Furthermore, the sliding seat 120 provides primary support for the tooling during movement and parking. Rollers 500 with locking mechanisms 510 are installed at each of its four bottom corners, allowing for smoother pushing and turning of the tooling during transport. Once the tooling is in the designated position, the locking mechanisms 510 can be used to brake the rollers 500, reducing the possibility of unexpected movement during lifting. In this way, the parking state of the base assembly 100 on the ground is more stable, allowing the lifting and lowering of the lifting frame 200 and the connection of the circuit breaker flange to be performed in a more stable environment, helping to reduce interference factors during operation.

[0046] With the combined use of the base 110 and the sliding seat 120, this embodiment achieves a relatively balanced structural relationship between ease of movement and operational stability. The sliding seat 120 is equipped with rollers 500, providing flexibility during initial tooling placement and position adjustment; while with the rollers 500 locked, the overall structure maintains a relatively static state, thereby reducing posture changes caused by bottom swaying. This structural combination offers good adaptability for circuit breaker removal operations, maintaining reliable support conditions in different working positions or ground conditions, making subsequent lifting and connection operations easier to complete in a stable environment.

[0047] In some embodiments, the base 110 is slidably connected to the slide seat 120 in a manner that allows it to slide left and right. The upper part of the slide seat 120 is symmetrically equipped with slide rails 121, and the lower part of the base 110 is provided with sliders 112 that cooperate with the slide rails 121.

[0048] In this embodiment, the base 110 can slide left and right on the sliding seat 120, giving the tooling a certain degree of lateral adjustment capability after it is positioned. The upper part of the sliding seat 120 has symmetrically arranged slide rails 121, and the lower part of the base 110 has a slider 112 that engages with the slide rails 121, providing clear guidance and constraint for the base 110 during lateral movement. Based on this structure, the movement direction of the base 110 is limited to the left and right direction, thereby avoiding unnecessary swaying and helping to ensure that subsequent operations are carried out in a more stable state.

[0049] Based on the above structural relationship, when the fixture has not yet supported the circuit breaker, the friction of the slider 112 sliding along the slide rail 121 is relatively light, making the lateral adjustment process relatively smooth, and the operator can more easily move the fixture to the expected position. Due to the clear guiding relationship, the restriction of the slide rail 121 on the slider 112 makes the movement more straight, reducing repeated adjustments caused by offset, thereby creating convenient conditions for subsequent support of the circuit breaker body.

[0050] After the base 110 enters the load-bearing state, the slider 112 remains in contact with the slide rail 121, maintaining a relatively stable force relationship under load, making the structure less prone to swaying under lateral forces. This upper and lower cooperation method ensures that the fixture retains a certain degree of resistance to displacement even after bearing the weight of the circuit breaker. During operations such as lifting, flange installation / removal, or translation, the position of the base 110 is less likely to change significantly, thus reducing the frequency of manual positioning and helping to maintain a relatively stable state throughout the entire withdrawal process.

[0051] In some embodiments, a screw mounting seat 123 connected to an adjusting screw 122 is installed at one of the upper left or right ends of the sliding seat 120. The sliding seat 120 is connected to the machine base 110 through the adjusting screw 122, so that the machine base 110 can slide left and right on the slide rail 121 to adjust its position by rotating the adjusting screw 122. An adjusting wheel 124 is fixedly connected to one outer end of the adjusting screw 122, and the other end of the adjusting screw 122 is connected to a screw support seat provided at the bottom of one side of the machine base 110.

[0052] In this embodiment, the adjusting screw 122 is rotatably mounted within the screw mounting base 123. The screw mounting base 123 provides rotational support for the adjusting screw 122, enabling the axial movement of the adjusting screw 122 to occur at a predetermined position. One end of the adjusting screw 122 is fixedly connected to the adjusting wheel 124. The operator can rotate the adjusting wheel 124 to drive the adjusting screw 122 to rotate, causing the adjusting screw 122 to gradually rotate in or out of the screw mounting base 123. As the adjusting screw 122 moves gradually in the axial direction, the distance between its other end and the screw support seat at the bottom of the machine base 110 changes accordingly, thereby causing the machine base 110 to move left or right along the slide rail 121, achieving lateral adjustment.

[0053] In practical use, the adjusting wheel 124 allows the operator to make left and right adjustments from a convenient position without the need for additional tools. Because the adjusting screw 122 uses a screw-pair transmission, it exhibits a smoother movement characteristic under external force, reducing sudden jumps or movements of the base 110 during lateral displacement, thus making the entire adjustment process more seamless. With this adjustment method, the fixture can achieve more precise lateral position correction when faced with minor positional deviations between the circuit breaker and the fixture, space constraints, or the need for alignment of fixtures on both sides. This helps reduce the number of repositioning operations and makes the exit process smoother.

[0054] Both the base assembly 100 and the support frame 200 are made of steel. Steel has advantages such as high strength, good rigidity, and wear resistance. Using steel to make the base assembly 100 and the support frame 200 ensures that the tooling will not deform or be damaged when bearing the weight of the circuit breaker and various forces generated during operation, thus ensuring the structural stability and reliability of the tooling.

[0055] In some embodiments, the circuit breaker removal tool is used with one tool at each end of the circuit breaker during removal. The circuit breaker removal tool is equipped with a walking support assembly 600 to guide the movement of the tool. The walking support assembly 600 is used to connect with the wooden blocks laid on the ground to support the tool during use. The walking support assembly 600 includes two parallel slides 610 arranged on the left and right sides. The slides 610 are steel structures with square grooves arranged along the length direction. Connecting pieces 620 are evenly arranged on the left and right sides of the slides 610. The connecting pieces 620 have connecting holes to connect the slides 610 to the wooden blocks by bolts.

[0056] In some embodiments, the tooling for circuit breaker removal is used with one tool at each end of the circuit breaker, such as... Figure 2 As shown, the tooling for circuit breaker removal is equipped with a traveling support assembly 600 to guide the movement of the tooling. The walking support assembly 600 is used to connect with the wooden blocks laid on the ground to support the tooling during use. The walking support assembly 600 includes two parallel slides 610 arranged on the left and right sides. The slides 610 are steel structures with square grooves arranged along the length direction. Connecting pieces 620 are evenly arranged on the left and right sides of the slides 610. The connecting pieces 620 have connecting holes so that the slides 610 can be connected to the wooden blocks by bolts.

[0057] In this embodiment, to meet the requirements of the tooling placement foundation during circuit breaker removal operations, a traveling support assembly 600 is used to provide a relatively stable support environment for the tooling. This assembly is typically arranged in front of and behind the circuit breaker body, enabling the two pieces of tooling to form a cooperative force-bearing relationship during the removal operation. To ensure the tooling remains usable even when the ground conditions on site are complex, the traveling support assembly 600 in this embodiment employs two parallel slides 610 arranged in the left-right direction. The slide bodies are made of steel and are placed as a whole on wooden blocks to form a continuous support surface during use.

[0058] Furthermore, the slide rail 610 has a square groove along its length to limit the movement range of the roller 500 on the slide rail 610. When the tooling moves on the slide rail 610 via the roller 500, the square groove can constrain the lateral displacement of the roller 500, causing the tooling to move in a roughly uniform direction. Since the slide rail 610 is supported on the wooden pad, its overall stress state is relatively uniform, making it easier for the groove to guide the roller 500. Through this structural cooperation, the movement of the tooling in the front-to-back direction will be more concentrated and controllable, providing a stable moving basis for the process of removing the circuit breaker.

[0059] In addition, multiple connecting plates 620 are arranged on both the left and right sides of the slide 610. The connecting plates 620 have connecting holes and can be fixed to the wooden blocks with bolts. Since the slide 610 can be fixed before use using the connecting plates 620, it is less prone to lateral displacement when carrying the tooling. With this arrangement, the slide 610 can maintain a relatively stable position during movement under stress, thereby reducing swaying caused by uneven ground or changes in the force on the rollers 500. As the stability of the slide 610 is improved, the offset of the tooling during forward and backward movement tends to decrease, making the exit process more seamless in actual operation and facilitating the operator's coordination of subsequent actions such as height and position adjustments.

[0060] In this embodiment, both the base assembly 100 and the support frame 200 are made of steel.

[0061] Steel possesses high compressive strength and structural rigidity, making it suitable for bearing the weight of the circuit breaker body and the sustained loads generated during decommissioning operations. When the fixture is in a lifting, moving, or stationary state, the steel undergoes minimal deformation under stress, helping to maintain the relative positional stability of the base assembly 100 and the support frame 200. For operational scenarios requiring repeated lifting and moving adjustments, this material property can, to some extent, reduce the possibility of cumulative structural displacement due to repeated stress, ensuring the fixture maintains a relatively stable geometric relationship throughout its service life.

[0062] Furthermore, after conventional spraying or rust prevention treatment, steel can withstand common external factors in the substation operating environment, such as humidity and dust. For tooling that needs to be in outdoor or semi-outdoor environments for extended periods, this material characteristic helps maintain the reliability of structural connections, ensuring that the base assembly 100 and the support frame 200 maintain relatively stable support capabilities during subsequent use.

[0063] Compared with the prior art, this application has the following beneficial effects: 1. This application provides a fixture for circuit breaker removal operations. Through the cooperation of the base assembly, lifting frame, lifting guide assembly, and lifting drive device, the fixture maintains a relatively stable operating state during circuit breaker removal. Rollers with locking mechanisms at the bottom of the base assembly can lock after the fixture moves to a designated position, thereby reducing the possibility of bottom displacement and lowering the probability of shaking caused by manual operation or tool contact. Simultaneously, the lifting guide assembly employs a sliding engagement of four guide columns and four guide sleeves, ensuring that the lifting frame always moves along a fixed guide surface during vertical movement. Therefore, during lifting and adjusting of the lifting frame, its movement trajectory remains relatively stable, reducing uneven load distribution caused by structural misalignment and contributing to the overall stability of the circuit breaker removal operation.

[0064] 2. This application, through further coordination between the lifting guide assembly and the lifting drive device, enables the lifting frame to exhibit smoother posture changes during lifting and adjustment. Since the four guide columns and guide sleeves jointly restrict the lateral offset of the lifting frame, its vertical movement is mainly constrained by multiple sliding contact surfaces, thereby reducing swaying caused by unilateral force. Simultaneously, the fixed connection between the lifting drive device and the bottom of the lifting frame concentrates the power transmitted during lifting, helping to reduce torsional phenomena during screw rotation and making the movement of the lifting frame closer to the intended direction. This power transmission method improves the convenience of height adjustment to a certain extent, allowing operators to more easily complete the lifting and lowering adjustments of the circuit breaker.

[0065] 3. In the lifting and support section, the inverted trapezoidal saddle in this application adopts an upwardly open structure, gradually expanding outwards from bottom to top to form a space for accommodating the cylindrical circuit breaker flange end. When the circuit breaker is removed, the flange end typically serves as the main load-bearing component. When placed inside the inverted trapezoidal saddle, the outward-expanding structure on both sides of the saddle allows the flange end to form three contact points within the saddle, thus achieving a relatively stable support foundation. Based on this support relationship, the connecting plates spaced apart on the saddle can be connected to the circuit breaker flange via bolts, establishing a fixed relationship between the lifting frame and the circuit breaker. Through this combination of support structure and connection method, the circuit breaker is less prone to displacement during lifting, raising, and moving, contributing to improved overall support reliability during removal operations.

[0066] The above embodiments are merely one of the implementation methods for achieving the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions, and other implementation methods that are easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tooling for removing a circuit breaker, characterized in that, It includes a base assembly (100), a support frame (200), a lifting guide assembly (300), and a lifting drive device (400). The base assembly (100) has a roller (500) with a locking mechanism (510) at its bottom; a lifting drive device (400) for controlling the lifting frame (200) to lift and adjust is installed on the upper part of the base assembly (100), the output end of the lifting drive device (400) is fixedly connected to the bottom end of the lifting frame (200), and a lifting guide assembly (30) is provided between the bottom end of the lifting frame (200) and the upper end of the base assembly (100). 0); The lifting frame (200) is fixedly provided with an inverted trapezoidal saddle (210) for supporting the circuit breaker body and open upward. The inverted trapezoidal saddle (210) is provided with three connecting plates (220) with bolt connection holes at intervals. The connecting plates (220) are used to connect to the circuit breaker flange by bolts. The connecting plate (220) is provided with a support rib (230) connecting the inverted trapezoidal saddle (210) and the lifting frame (200) at the position directly below the connecting plate (220).

2. The tooling for circuit breaker removal operation according to claim 1, characterized in that, The bottom of the inverted trapezoidal saddle (210) is provided with a thickened plate (240) corresponding to the position of the supporting rib (230).

3. The tooling for circuit breaker removal operation according to claim 1, characterized in that, The lifting guide assembly (300) includes four vertically arranged guide columns (310) and four guide sleeves (320) that are slidably engaged with the guide columns (310). The four guide sleeves (320) are fixedly installed on the upper part of the base assembly (100) and are arranged in a square shape. The guide columns (310) are slidably connected in the guide sleeves (320). The top of the guide column (310) is fixedly connected to the bottom of the lifting frame (200). The bottom of the guide column (310) can be vertically lifted and lowered in the opening space in the base assembly (100).

4. The tooling for circuit breaker removal operation according to claim 1, characterized in that, The lifting drive device (400) includes a handwheel (410), a transmission mechanism (420), and a lifting screw (430) coaxially connected to the output end of the transmission mechanism (420). The handwheel (410) is located at the front end of the upper part of the base assembly (100). The shaft of the handwheel (410) is connected to the input end of the transmission mechanism (420) through the bearing seat. The output end of the transmission mechanism (420) is connected to the lifting screw (430). The bottom end of the lifting frame (200) is fixedly installed with a screw support seat. The upper end of the lifting screw (430) is connected to the screw support seat and connected to the lifting frame (200) through the screw support seat.

5. The tooling for circuit breaker removal operation according to claim 4, characterized in that, The transmission mechanism (420) is a worm gear transmission mechanism that can reduce speed. The transmission mechanism (420) includes a transmission box, a worm installed in the transmission box, and a worm wheel installed in the transmission box and meshing with the worm. The worm is connected to the shaft of the handwheel (410). The worm wheel can cooperate with the connected lifting screw (430). The bottom end of the lifting screw (430) can be vertically raised and lowered in the opening space in the base assembly (100).

6. The tooling for circuit breaker removal operation according to claim 1, characterized in that, The base assembly (100) includes a base (110) and a sliding seat (120). The base (110) is disposed on the sliding seat (120). A fixing plate (111) for mounting a lifting drive device (400) is fixedly disposed at the middle of the upper end of the base (110). Rollers (500) with locking mechanisms (510) are respectively installed at the four corners of the bottom end of the sliding seat (120).

7. The tooling for circuit breaker removal operation according to claim 6, characterized in that, The base (110) is slidably connected to the slide seat (120) in a way that allows it to slide left and right. The upper part of the slide seat (120) is symmetrically equipped with slide rails (121), and the lower part of the base (110) is provided with sliders (112) that cooperate with the slide rails (121).

8. The tooling for circuit breaker removal operation according to claim 7, characterized in that, The sliding seat (120) is equipped with a screw mounting seat (123) for connecting the adjusting screw (122) at one of its upper left and right ends. The sliding seat (120) is connected to the machine base (110) through the adjusting screw (122). An adjusting wheel (124) is fixedly connected to one of the outer ends of the adjusting screw (122), and the other end of the adjusting screw (122) is connected to the screw support seat set at the bottom of one side of the machine base (110).

9. The tooling for circuit breaker removal operation according to claim 1, characterized in that, The circuit breaker removal tooling is used by arranging one at each end of the circuit breaker when removing the circuit breaker. The circuit breaker removal tooling is equipped with a traveling support assembly (600) to guide the movement of the tooling.

10. A tooling for circuit breaker removal operation according to claim 9, characterized in that, The walking support assembly (600) is used to connect with the wooden pads laid on the ground to support the tooling during use. The walking support assembly (600) includes two parallel sliding tracks (610) on the left and right sides. The sliding track (610) is a steel structure with square grooves arranged along the length direction. Connecting pieces (620) are evenly arranged on the left and right sides of the sliding track (610). The connecting pieces (620) have connecting holes to connect the sliding track (610) to the wooden pads by bolts.

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