A circuit breaker energy storage device servicing device

Abstract

The application discloses a circuit breaker energy storage device overhauling device, comprising a bearing frame, a bearing rail, a sliding shell, a truss, a hoist, a driving assembly and a locking mechanism. Through the integrated design of the modular bearing frame, the bearing rail, the sliding shell, the truss and the hoist, vertical lifting and horizontal movement integrated operation is realized, and the limitation of narrow space is broken through; the locking mechanism adopts gear and rack transmission to drive the synchronous braking locking wheels of the two side jacks, cooperates with the bolt limiting and the compression spring pre-tightening, and ensures the stability of overhauling; the driving assembly drives the driving wheel to move stably through the chain wheel transmission; the reinforcing rod, the limiting guide wheel and the stop rod enhance the structural rigidity and operation safety. The device solves the pain point that large equipment cannot enter narrow space, improves the overhauling efficiency and safety, and is suitable for narrow space overhauling operation of the circuit breaker energy storage device.

Description

Technical Field

[0001] This application belongs to the field of cranes, and specifically relates to a maintenance device for a circuit breaker energy storage device. Background Technology

[0002] As a core device in the power system ensuring the safety of power transmission, the energy storage device of the circuit breaker is a key component for realizing the opening and closing actions of the circuit breaker, and is directly related to the stable operation of the power grid and its ability to quickly isolate faults. With the development of power systems towards higher voltage and larger capacity, the integration of circuit breakers is constantly increasing. Their energy storage devices are usually installed in the narrow space at the bottom of the circuit breaker, which brings significant challenges to daily maintenance and replacement work.

[0003] In the existing technology, the maintenance work of circuit breaker energy storage devices has the following main drawbacks:

[0004] 1. Poor spatial adaptability: The weight of a single energy storage device can reach 450kg (such as the circuit breaker energy storage device configured in the AC filter field of the Chaidamu converter station), which cannot be directly moved by manpower; and large lifting equipment such as cranes and forklifts are difficult to enter the narrow working area at the bottom of the circuit breaker due to size limitations, which makes it impossible to carry out maintenance work.

[0005] 2. Limited tool functionality: Traditional jack-type tools rely on the bottom plane for support, but the circuit breaker has a slotted box structure at the bottom, which provides insufficient support points and makes it impossible to stably lift the energy storage device; conventional small lifting tools such as manual hoists only have vertical lifting functions and lack the ability to move and adjust laterally / vertically. They require multiple disassemblies and reassemblies, which is cumbersome and inefficient.

[0006] 3. Insufficient safety and stability: The existing mobile hoisting tools lack reliable locking devices for their moving mechanisms. During maintenance, they are prone to accidental slippage due to external forces or vibrations, posing safety hazards such as equipment falling and personnel injury. Utility Model Content

[0007] This application provides a maintenance device for circuit breaker energy storage devices. It achieves lateral movement through a modular support frame and load-bearing rail structure, integrates drive components and locking mechanisms to ensure operational safety, and optimizes detailed design to improve stability. Thus, it provides an integrated maintenance solution of "vertical lifting + lateral / longitudinal movement + reliable locking", which effectively meets the maintenance needs of circuit breaker energy storage devices.

[0008] To achieve the above objectives, this application provides a maintenance device for a circuit breaker energy storage device, including a support frame. Two load-bearing rails are symmetrically arranged on the top of the support frame. A drive wheel and a locking wheel are rolled on the load-bearing rails. A sliding housing is provided on the drive wheel and the locking wheel. A truss is fixedly arranged between the two sliding housings. A hoist is provided in the middle of the truss. A drive assembly is provided on the side of the truss near the drive wheel. The drive assembly is connected to the drive wheel. A locking mechanism is provided on the side of the sliding housing near the locking wheel. The locking mechanism is used to limit the movement of the locking wheel.

[0009] In one embodiment, the locking mechanism includes push rods slidably disposed on both sides of the locking wheel via a sliding housing, and a brake block is provided on the side of the push rods near the locking wheel;

[0010] The sliding housing has a connecting groove through the top near the locking wheel. First bearings are provided on both sides of the connecting groove. A telescopic connecting rod is rotatably installed in the first bearing. The telescopic connecting rod extends into the sliding housing through the connecting groove and connects with the adjusting component. The adjusting component is fixedly installed in the sliding housing and connected with the top rod. A pin is slidably installed on the first bearing corresponding to the telescopic connecting rod.

[0011] In one embodiment, the adjustment assembly includes a fixed chamber fixedly disposed within the sliding housing, two connecting screws slidably disposed at both ends of the fixed chamber, and a connecting plate disposed at the end of the two connecting screws near the top rod, the connecting plate being connected to the top rod by screws;

[0012] Two connecting screws are connected at one end of the sliding housing by a connecting rod. A rack is provided on the connecting rod, which meshes with a gear. The gear is rotatably mounted in the fixed compartment. A second bearing is provided on the connecting rod near the truss side, and the second bearing is rotatably connected to the telescopic connecting rod.

[0013] In one embodiment, a compression spring is provided between the connecting screw and the fixed chamber.

[0014] In one embodiment, the sliding housing is further provided with bosses at both ends and limit guide wheels, which are rolledly connected to the load-bearing rail.

[0015] In one embodiment, limit stops are fixedly installed at both ends of the load-bearing rail.

[0016] In one embodiment, a reinforcing rod is provided at the connection between the support frame and the load-bearing rail.

[0017] In one embodiment, the drive assembly includes a drive motor fixedly mounted on a frame, the output end of the drive motor being connected to a sprocket assembly, the sprocket assembly being mounted on a transmission shaft, and the transmission shaft being rotatably mounted on a sliding housing and connected to a drive wheel.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] By combining the modular structure of the support frame and load-bearing rail with the integrated design of the sliding shell, truss and hoist, the vertical lifting and lateral movement of the circuit breaker energy storage device are integrated, effectively overcoming the limitations of narrow spaces on maintenance operations, solving the technical pain point that large hoisting equipment cannot enter, and significantly improving maintenance efficiency and space adaptability.

[0020] The adjusting component in the locking mechanism uses a gear and rack drive to drive the push rods on both sides to move synchronously, so that the brake block presses the locking wheel evenly. In conjunction with the pin, the telescopic link is limited and fixed, ensuring the stability of the equipment during maintenance and eliminating the risk of accidental slippage. The compression spring in the adjusting component provides pre-tightening force to ensure connection reliability and provides reset assistance for the unlocking action, improving the smoothness of locking and unlocking. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 An overall schematic diagram of a circuit breaker energy storage device maintenance device provided in this application;

[0023] Figure 2 Provided for this application Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 A side-tilt schematic diagram of a circuit breaker energy storage device maintenance device provided in this application;

[0025] Figure 4 Provided for this application Figure 3 Enlarged view of point B in the middle;

[0026] Figure 5 A schematic diagram of the adjustment component of a circuit breaker energy storage device maintenance device provided in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Bearing frame; 2. Load-bearing rail; 3. Sliding housing; 4. Truss; 5. Drive shaft; 6. Drive wheel; 7. Locking mechanism; 71. Locking wheel; 72. Pin; 73. Telescopic connecting rod; 74. First bearing seat; 75. Top rod; 76. Brake block; 77. Adjustment assembly; 771. Fixed chamber; 772. Compression spring; 773. Connecting plate; 774. Connecting screw; 775. Rack; 776. Second bearing seat; 777. Gear; 8. Drive motor; 9. Limiting stop bar; 10. Reinforcing rod; 11. Hoist; 12. Sprocket assembly; 13. Limiting guide wheel; 14. Boss. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0029] See Figures 1 to 5 As shown, this application provides a circuit breaker energy storage device maintenance device, including a support frame 1. Two load-bearing rails 2 are symmetrically arranged on the top of the support frame 1. A drive wheel 6 and a locking wheel 76 are rolled on the load-bearing rails 2. A sliding housing 3 is provided on the drive wheel 6 and the locking wheel 76. A truss 4 is fixedly arranged between the two sliding housings 3. A hoist 11 is arranged in the middle of the truss 4. A drive assembly is arranged on the side of the truss 4 near the drive wheel 6. The drive assembly is connected to the drive wheel 6. A locking mechanism 7 is arranged on the side of the sliding housing 3 near the locking wheel 71. The locking mechanism 7 is used to limit the movement of the locking wheel 71.

[0030] During routine maintenance of the circuit breaker, firstly, lower the hook of the hoist 11 to the lifting points at both ends of the circuit breaker, fasten it, and confirm that the connection is secure. Then, simultaneously operate the chain hoist handle to smoothly lift the energy storage device, allowing it to vertically detach from the circuit breaker mounting base, thus completing the lifting operation. After the lifting operation is completed, drive the drive wheel 6 through the drive assembly to move the sliding housing 3 along the load-bearing rail 2, causing the truss 4 to move horizontally to the maintenance area. After sliding to the maintenance area, lock the locking wheel 71 through the locking mechanism 7 to prevent the sliding housing 3 from shifting during maintenance, ensuring operational safety. After maintenance is completed, operate in the reverse order, smoothly moving the circuit breaker energy storage device back along the rail and vertically lowering it to the mounting base. After confirming the reset, remove the lifting tools and restore the equipment to its initial state.

[0031] It should be noted that casters can be installed at the bottom of the support frame 1 to facilitate flexible movement of the entire device between different work points; at the same time, adjustable outriggers can also be installed at the bottom of the support frame to stably support the whole machine during operation, avoiding tilting or shaking caused by uneven ground, thereby improving the safety and accuracy of maintenance operations.

[0032] Optionally, the locking mechanism 7 includes a push rod 75 slidably disposed on both sides of the locking wheel 71 via the sliding housing 3, and a brake block 76 is provided on the side of the push rod 75 near the locking wheel 71;

[0033] The sliding housing 3 has a connecting groove through the top near the locking wheel 71. First bearings 74 are provided on both sides of the connecting groove. A telescopic connecting rod 73 is rotatably arranged in the first bearing 74. The telescopic connecting rod 73 extends into the sliding housing 3 through the connecting groove and connects with the adjusting component 77. The adjusting component 77 is fixedly arranged in the sliding housing 3 and connected to the top rod 75. A pin 72 is slidably arranged on the first bearing 74 corresponding to the telescopic connecting rod 73.

[0034] In this embodiment, after the circuit breaker energy storage device is lifted and moved to the maintenance area, the telescopic connecting rod 73 is pressed down. During the pressing process, the telescopic connecting rod 73 rotates around the first axle seat 74, thereby driving the adjusting component 77 to drive the top rods 75 on both sides to slide towards each other, so that the brake block 76 presses tightly against the wheel surface of the locking wheel 71. Then, the pin 72 is inserted into the first axle seat 74 to complete the limiting and fixing of the telescopic connecting rod 73, thereby achieving reliable braking of the locking wheel 71 and preventing the sliding housing 3 from moving unexpectedly during maintenance. When the maintenance work is completed, the pin 72 is pulled out, the telescopic connecting rod 73 is raised, and the adjusting component 77 drives the top rod 75 to slide in the opposite direction, so that the brake block 76 disengages from the surface of the locking wheel 71, releasing the locked state, thereby restoring the free movement function of the sliding housing 3 along the load-bearing rail 2, ensuring that the equipment can be smoothly moved back to its original position.

[0035] Optionally, the adjustment assembly 77 includes a fixed chamber 771 fixedly disposed within the sliding housing 3. Two connecting screws 774 are slidably disposed at both ends of the fixed chamber 771. A connecting plate 773 is disposed at one end of the two connecting screws 774 near the top rod 75. The connecting plate 773 is connected to the top rod 75 by screws.

[0036] The two connecting screws 774 are connected at one end of the sliding housing 3 by a connecting rod. A rack 775 is provided on the connecting rod, and the rack 775 meshes with a gear 777. The gear 777 is rotatably disposed in the fixed compartment 771. A second bearing 776 is provided on the connecting rod near the side of the truss 4, and the second bearing 776 is rotatably connected to the telescopic connecting rod 73.

[0037] In this embodiment, when the telescopic connecting rod 73 is pressed down, it rotates around the second shaft seat 776, which drives the connecting screw 774 through the connecting rod to move the top rods 75 towards each other, thereby causing the brake block 76 to press against the locking wheel 71 to achieve locking; during the movement of the connecting screw 774, the rack 775 will move synchronously with the connecting rod, driving the gear 777 meshing with it to rotate, thereby driving the connecting screw 774 on the other side to move in coordination, ensuring that the top rods 75 on both sides move in unison, and improving the symmetry and reliability of braking.

[0038] When the telescopic linkage 73 is lifted and reset, the gear 777 rotates in the opposite direction, driving the rack 775 to retract, causing the connecting screws 774 on both sides to move in the opposite direction, pushing the push rod 75 to slide in opposite directions, so as to realize the synchronous disengagement of the brake block 76 and ensure smooth unlocking.

[0039] Optionally, a compression spring 772 is provided between the connecting screw 774 and the fixed chamber 771. The compression spring 772 is in its naturally extended state when the telescopic link 73 is not subjected to external force, providing preload to the connecting screw 774. This ensures a stable and reliable connection between the connecting screw 774 and the fixed chamber 771, preventing loosening due to vibration or impact. Furthermore, it ensures that the push rod 75 remains stably positioned when no external force is applied, preventing the brake block 76 from accidentally unlocking or contacting the locking wheel 71 due to vibration during equipment operation, thereby improving the stability and safety of the entire locking mechanism. Simultaneously, the compression spring 772 provides a reset assist during the movement of the telescopic link 73, making the push rod 75 retract more smoothly and further enhancing the reliability of the unlocking response.

[0040] Optionally, the sliding housing 3 is further provided with bosses 14 at both ends and limit guide wheels 13, which are tactilely connected to the load-bearing rail 2. Limit stops 9 are fixedly provided at both ends of the load-bearing rail 2.

[0041] In this embodiment, when the sliding housing 3 moves along the load-bearing rail 2, the limiting guide wheel 13 rolls smoothly on the load-bearing rail 2. The boss 14 and the limiting stop 9 cooperate to form a mechanical limit, preventing the sliding housing 3 from detaching from the end of the rail body and improving operational safety. At the same time, when the limiting guide wheel 13 rolls on the load-bearing rail 2, it can form a tight fit with both sides of the load-bearing rail 2, effectively suppressing lateral swaying and ensuring the stability and straightness of the sliding housing 3 along the load-bearing rail 2, avoiding operational deviation caused by uneven load or external force.

[0042] Optionally, a reinforcing rod 10 is provided at the connection between the support frame 1 and the load-bearing rail 2. The reinforcing rod 10 is fixedly connected to the support frame 1 and the load-bearing rail 2, forming a triangular support structure, which effectively improves the bending and torsional stiffness of the connection part and prevents plastic deformation under long-term load. The setting of the reinforcing rod 10 not only enhances the stability of the overall structure, but also disperses the stress concentration at the connection between the support frame 1 and the load-bearing rail 2, extending the service life of the equipment.

[0043] Optionally, the drive assembly includes a drive motor 8 fixedly mounted on the truss 4, the output end of the drive motor 8 being connected to a sprocket assembly 12, the sprocket assembly 12 being mounted on a transmission shaft 5, and the transmission shaft 5 being rotatably mounted on the sliding housing 3 and connected to the drive wheel 6.

[0044] In this embodiment, after the drive motor 8 starts, it transmits power to the transmission shaft 5 through the sprocket assembly 12, which drives the drive wheel 6 to rotate synchronously, thereby driving the sliding housing 3 to move smoothly along the load-bearing rail 2.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A maintenance device for a circuit breaker energy storage device, characterized in that: The system includes a support frame (1), on which two load-bearing rails (2) are symmetrically arranged at the top. A drive wheel (6) and a locking wheel (71) are rolled on the load-bearing rails (2). A sliding housing (3) is provided on the drive wheel (6) and the locking wheel (71). A truss (4) is fixedly arranged between the two sliding housings (3). A hoist (11) is provided in the middle of the truss (4). A drive assembly is provided on the side of the truss (4) near the drive wheel (6). The drive assembly is connected to the drive wheel (6). A locking mechanism (7) is provided on the side of the sliding housing (3) near the locking wheel (71). The locking mechanism (7) is used to limit the movement of the locking wheel (71).

2. The circuit breaker energy storage device maintenance device according to claim 1, characterized in that: The locking mechanism (7) includes a push rod (75) slidably disposed on both sides of the locking wheel (71) via the sliding housing (3), and a brake block (76) is provided on the side of the push rod (75) near the locking wheel (71). The sliding housing (3) has a connecting groove through the top near the locking wheel (71). First bearings (74) are provided on both sides of the connecting groove. A telescopic connecting rod (73) is rotatably provided in the first bearing (74). The telescopic connecting rod (73) extends into the sliding housing (3) through the connecting groove and is connected to the adjusting component (77). The adjusting component (77) is fixedly provided in the sliding housing (3) and is connected to the top rod (75). A pin (72) is slidably provided on the first bearing (74) corresponding to the telescopic connecting rod (73).

3. The circuit breaker energy storage device maintenance device according to claim 2, characterized in that: The adjustment assembly (77) includes a fixed chamber (771) fixedly disposed in the sliding housing (3). Two connecting screws (774) are slidably disposed at both ends of the fixed chamber (771). A connecting plate (773) is disposed at one end of the two connecting screws (774) near the top rod (75). The connecting plate (773) is connected to the top rod (75) by screws. The two connecting screws (774) are connected by a connecting rod at one end of the sliding housing (3). A rack (775) is provided on the connecting rod, and the rack (775) meshes with a gear (777). The gear (777) is rotatably disposed in the fixed compartment (771). A second bearing (776) is provided on the connecting rod near the truss (4), and the second bearing (776) is rotatably connected to the telescopic connecting rod (73).

4. The circuit breaker energy storage device maintenance device according to claim 3, characterized in that: A compression spring (772) is provided between the connecting screw (774) and the fixed chamber (771).

5. A circuit breaker energy storage device maintenance device according to claim 1, characterized in that: The sliding housing (3) is also provided with bosses (14) at both ends and with limit guide wheels (13), which are rolledly connected to the load-bearing rail (2).

6. The circuit breaker energy storage device maintenance device according to claim 1, characterized in that: Limiting stops (9) are fixedly installed at both ends of the load-bearing rail (2).

7. The circuit breaker energy storage device maintenance device according to claim 1, characterized in that: A reinforcing rod (10) is provided at the connection between the support frame (1) and the load-bearing rail (2).

8. A circuit breaker energy storage device maintenance device according to any one of claims 1-7, characterized in that: The drive assembly includes a drive motor (8) fixedly mounted on the truss (4). The output end of the drive motor (8) is connected to a sprocket assembly (12). The sprocket assembly (12) is mounted on a transmission shaft (5). The transmission shaft (5) is rotatably mounted on the sliding housing (3) and connected to the drive wheel (6).

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