Transfer trolley for mechanical test of circuit breaker
By designing a transport vehicle for mechanical testing of circuit breakers, the movement and transfer process of circuit breakers was simplified, the problems of high operational complexity and safety hazards were solved, the testing efficiency was improved, and the safety of operators was ensured.
Patent Information
- Application Number
- CN202520245268.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The existing circuit breaker type testing involves highly complex and labor-intensive moving and transferring processes, which pose safety hazards.
Design a transport vehicle for mechanical testing of circuit breakers, including components such as a main frame, circuit breaker fixing mechanism, insulation support column and test pulleys, which simplifies the movement and transport process of circuit breakers, provides operating space for test sensors, and meets the requirements of insulation testing.
It improved testing efficiency, reduced workload, ensured operator safety, and met the horizontal force testing requirements of static load tests.
Smart Images
Figure CN223702673U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical testing technology and equipment, specifically to a transport vehicle used for mechanical testing of circuit breakers. Background Technology
[0002] As a key component of the power system, the quality and safety of circuit breakers directly affect the stable and reliable operation of the entire power system. Therefore, circuit breaker type testing has become an important series of tests to ensure that product performance meets standards. The circuit breaker type testing series includes multiple individual tests such as mechanical tests and insulation tests, aiming to comprehensively evaluate the mechanical strength, insulation performance, and overall reliability of the circuit breaker.
[0003] The mechanical testing process, especially the mechanical characteristic measurement, requires precise installation of sensors at the bottom of the circuit breaker to capture key data. The insulation test requires the circuit breaker to be suspended on the insulator. Since circuit breakers are usually large and heavy, existing methods rely on equipment such as lifting vehicles and cranes to lift and move the circuit breaker, which is not only complicated to operate, but also time-consuming and labor-intensive, and also increases the safety hazards of the test. Utility Model Content
[0004] The technical problem this utility model aims to solve is to overcome the shortcomings of existing circuit breaker type testing, such as high operational complexity and large workload in the movement and transfer process, as well as the safety hazards in the process. It provides a transfer vehicle for circuit breaker mechanical testing, which simplifies the movement and transfer process of circuit breaker type testing. While providing space for the operation and adjustment of test sensors for circuit breaker mechanical performance testing, it also meets the requirements of insulation testing and facilitates the horizontal force testing of static load tests, reducing related workload and thus improving overall testing efficiency while ensuring the safety of operators.
[0005] This transfer vehicle for mechanical testing of circuit breakers includes a main frame and a circuit breaker fixing mechanism mounted on the main frame. The main frame includes a top U-shaped support frame. The circuit breaker fixing mechanism includes a pair of guide rails and four uprights mounted on the U-shaped support frame. The two guide rails are respectively located on both sides of the U-shaped support frame. A limit fixing block is detachably installed at one end of each guide rail. A positioning nut is fixed at the other end of each guide rail, and a tightening screw is threaded into the positioning nut. The end of the tightening screw is rotatably connected to a U-shaped clamping frame placed on the upper surface of the guide rail.
[0006] Furthermore, the main frame also includes a seat frame with wheels and an insulating support column fixed on the seat frame to support the U-shaped support frame. The insulating support column adopts a 40.5kV porcelain insulator column.
[0007] Furthermore, the four uprights are equipped with crossbeams for enclosing the upper outer perimeter area of the circuit breaker under test. The uprights have longitudinal slots, and the two ends of the crossbeams are fastened to the slots by fixing bolts. Test pulleys for horizontal force testing of the static load test of the circuit breaker terminals are installed on the crossbeams.
[0008] Furthermore, the tightening screw is an M20 fixed screw, and a crank handle for operating the screw rotation is provided on one side of the tightening screw.
[0009] This utility model discloses a transport vehicle for mechanical testing of circuit breakers, which overcomes the shortcomings of existing circuit breaker type testing methods, such as high operational complexity and large workload in the movement and transport process, as well as the safety hazards in the process. Its beneficial effects are: it simplifies the movement and transport process of circuit breaker type testing, provides space for the operation and adjustment of test sensors for circuit breaker mechanical performance testing, meets the requirements of insulation testing, and facilitates the horizontal force test for static load testing, reducing related workload, thereby improving overall testing efficiency and ensuring the safety of operators. Attached Figure Description
[0010] The following description, in conjunction with the accompanying drawings, further illustrates a transfer vehicle for mechanical testing of circuit breakers according to this utility model:
[0011] Figure 1 This is a schematic diagram of the main view of the transport vehicle used for mechanical testing of circuit breakers;
[0012] Figure 2 yes Figure 1 Top view;
[0013] Figure 3 yes Figure 1 The right view.
[0014] In the picture:
[0015] 1-Main frame; 11-U-shaped support frame; 12-Wheel; 13-Seat frame; 14-Insulating support column;
[0016] 2-Circuit breaker fixing mechanism; 21-Guide rail, 22-Upright frame, 23-Limit fixing block, 24-Positioning nut, 25-Tightening screw, 26-U-shaped frame, 27-Crossbeam; 221-Long slot, 251-Crank handle, 271-Fixing bolt, 272-Test pulley. Detailed Implementation
[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0018] In the description of this utility model, it should be understood that the terms "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0019] The present invention will be further described below with specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments.
[0020] Implementation method 1: such as Figures 1 to 3 As shown, the transfer vehicle for mechanical testing of circuit breakers includes a main frame 1 and a circuit breaker fixing mechanism 2 mounted on the main frame 1. The main frame 1 includes a top U-shaped support frame 11. The circuit breaker fixing mechanism 2 includes a pair of guide rails 21 and four uprights 22 mounted on the U-shaped support frame 11. The two guide rails 21 are respectively mounted on both sides of the U-shaped support frame 11. A limit fixing block 23 is detachably mounted on one end of each guide rail 21. A positioning nut 24 is fixed to the other end of each guide rail 21, and a tightening screw 25 is threaded into the positioning nut 24. The end of the tightening screw 25 is rotatably connected to a U-shaped clamping frame 26 placed on the upper surface of the guide rail 21.
[0021] Implementation Method 2: The main frame 1 of the transport vehicle used for mechanical testing of circuit breakers further includes a seat frame 13 equipped with wheels 12, and an insulating support column 14 fixed on the seat frame 13 to support the U-shaped support frame 11. The insulating support column 14 uses a 40.5kV porcelain insulator column. The 40.5kV porcelain insulator support column has high insulation performance and high voltage resistance, and can effectively isolate the potential difference between the U-shaped support frame and the ground, meeting the test requirements of insulation testing. The remaining structures and components are as described in Implementation Method 1 and will not be described again.
[0022] Implementation Method 3: The four uprights 22 of the transport vehicle used for mechanical testing of circuit breakers are equipped with crossbeams 27 for enclosing the upper outer perimeter of the circuit breaker under test. The uprights have longitudinal slots 221. The two ends of the crossbeams 27 are fastened to the slots 221 by fixing bolts 271. Test pulleys 272 for horizontal force testing during static load testing of the circuit breaker terminals are installed on the crossbeams 27. The remaining structures and components are as described in Implementation Method 1 and will not be repeated.
[0023] Embodiment 4: The tightening screw 25 of the transfer vehicle used for mechanical testing of circuit breakers is an M20 fixed screw, and a crank handle 251 for operating the screw rotation is provided on one side of the tightening screw 25. The remaining structure and components are as described in Embodiment 1, and will not be described again.
[0024] In use: Push the transport cart to the vicinity of the circuit breaker, remove the limiting fixing block, and push the circuit breaker trolley into the transport cart along the guide rail. After installing the limiting fixing block, turn the handwheel and tighten the screw to push the U-shaped clamping frame forward, locking the circuit breaker trolley wheels. Continue turning the handwheel, and the U-shaped clamping frame will push the circuit breaker closer to the limiting fixing block until the U-shaped clamping frame and the limiting fixing block clamp the circuit breaker from both sides. The hollow center of the U-shaped support frame forms an open area under the circuit breaker, providing ideal installation space for various sensors required for testing. Operators can easily enter this area and perform necessary operations and adjustments on the sensors at the bottom of the circuit breaker.
[0025] This transport vehicle for mechanical testing of circuit breakers overcomes the shortcomings of existing circuit breaker type testing, such as high operational complexity and large workload in the movement and transfer process, as well as the safety hazards in the process. While providing space for the operation and adjustment of test sensors for the mechanical performance testing of circuit breakers, it also meets the requirements of insulation testing and facilitates the horizontal force testing of static load testing, reducing the related workload, thereby improving the overall testing efficiency and ensuring the safety of operators.
[0026] The above description illustrates the main features, basic principles, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments or examples described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments or examples should be considered exemplary and not restrictive. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A transfer cart for circuit breaker mechanical testing, characterized by: It includes a main frame (1) and a circuit breaker fixing mechanism (2) installed on the main frame (1), wherein the main frame (1) includes a top U-shaped support frame (11). The circuit breaker fixing mechanism (2) includes a pair of guide rails (21) and four uprights (22) installed on the U-shaped support frame (11). The two guide rails (21) are respectively set on both sides of the U-shaped support frame (11). A limit fixing block (23) is detachably installed at one end of the two guide rails (21). A positioning nut (24) is fixed at the other end of each of the two guide rails (21), and a tightening screw (25) is threaded into the positioning nut (24). The end of the tightening screw (25) is rotatably connected to a U-shaped clip frame (26) placed on the upper surface of the guide rail (21).
2. The transfer cart for mechanical testing of circuit breakers according to claim 1, characterized in that: The main frame (1) also includes a seat frame (13) with wheels (12) installed, and an insulating support column (14) fixed on the seat frame (13) for supporting the U-shaped support frame (11). The insulating support column (14) is a 40.5kV porcelain insulator column.
3. The transfer cart for mechanical testing of circuit breakers according to claim 2, characterized in that: The four uprights (22) are provided with crossbeams (27) for enclosing the upper outer area of the circuit breaker under test. The uprights have longitudinal slots (221). The two ends of the crossbeams (27) are fastened to the slots (221) by fixing bolts (271). The crossbeams (27) are equipped with test pulleys (272) for horizontal force testing of the static load test of the circuit breaker terminals.
4. The transfer cart for mechanical testing of circuit breakers of claim 3, wherein: The tightening screw (25) is an M20 fixed screw, and a crank handle (251) for operating the screw rotation is provided on one side of the tightening screw (25).