Circuit breaker operating force testing device
By designing the circuit breaker operating force testing device, and using technical means such as electric speed control push rods and synchronous lifting platforms, the problem of large errors in the operating force test results of the circuit breaker during the existing technology has been solved, and the accuracy and applicability of the test are achieved.
Patent Information
- Application Number
- CN202421975720.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-15
AI Technical Summary
When testing the operating force of the aviation circuit breaker operating handle, it is difficult to control the magnitude of push and pull forces, and it is easy to cause overshoot to be used too much force, resulting in large errors in the test results.
A circuit breaker operating force testing device is designed, including an installation mechanism, a circuit breaker, a pulling crimp, a fixing table, a digital push-pull gauge, a guide rail and an electric speed control push rod. The digital push-pull gauge is driven to move at a constant speed through the electric speed control push rod to avoid excessive force, and ensure that the operating lever axis of the circuit breaker is consistent with the center axis of the pull-pull gauge through the synchronous lifting table and clamping components.
It realizes the accuracy of the circuit breaker operating force test, avoids overshoot caused by excessive force, reduces the error of the test results, and is suitable for circuit breakers of various models and sizes.
Smart Images
Figure CN222938737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aviation circuit breakers, and particularly to a test device for the operating force of a circuit breaker. Background Technique
[0002] An aviation circuit breaker is an electrical installation device specifically designed for aviation and aerospace equipment, mainly used to protect the circuits and loads on an aircraft. When inspecting the performance of an aviation circuit breaker, it is necessary to detect the operating force of its operating handle. Currently, the test is carried out using a handheld digital display push-pull force gauge. The circuit breaker operating handle is pushed to keep it in the locked state, or the handle is pulled to keep it in the tripped state. During the test, when pushing the digital display push-pull force gauge by hand, it is very difficult to control the magnitude of the push and pull forces, resulting in an overshoot phenomenon due to excessive force, and an invalid peak force appears. At the same time, due to manual operation, it is difficult to grasp the centering between the circuit breaker and the digital display push-pull force gauge, resulting in a large error in the test result of the operating force. Summary of the Invention
[0003] In order to solve the above problems, the utility model provides a test device for the operating force of a circuit breaker, aiming to avoid the overshoot phenomenon, ensure good centering during the test, and achieve the effect of accurate testing.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme: A test device for the operating force of a circuit breaker includes an installation mechanism, a circuit breaker, a pull-press buckle, a fixed table, a digital display push-pull force gauge, a guide rail, and an electric speed control push rod. The circuit breaker is connected to the installation mechanism. One end of the pull-press buckle is connected to the digital display push-pull force gauge, and the other end is connected to the circuit breaker. The guide rail is installed on the fixed table, the digital display push-pull force gauge is slidably connected to the guide rail, and the electric speed control push rod is connected to the digital display push-pull force gauge and drives the digital display push-pull force gauge to make a reciprocating motion towards the circuit breaker.
[0005] The installation mechanism includes an installation base and a synchronous lifting platform. The circuit breaker is placed on the installation base, and the synchronous lifting platform is fixedly connected to the installation base and drives the installation base to move up and down.
[0006] Clamping components are arranged on both sides of the installation base. The clamping components include a connecting plate, a top rod, and a spring. The connecting plate is respectively connected to the installation base and the top rod. A spring is sleeved on the top rod and abuts against the circuit breaker.
[0007] A limiting plate is arranged at the front end of the installation base, and the circuit breaker abuts against the limiting plate.
[0008] One end of the pull-press buckle connected to the circuit breaker is provided with a through slot, and the circuit breaker is clamped to the pull-press buckle through the through slot.
[0009] The width of the slot opening of the through slot is X, the diameter of the operating rod of the circuit breaker is Y, and X - Y = 1mm.
[0010] Advantages of the present utility model:
[0011] 1) By setting the running speed of the electric speed-regulating push rod, the digital display push-pull force gauge connected to the tension and compression buckle is driven to move uniformly, thereby pushing the operating rod of the circuit breaker forward or backward smoothly and uniformly, thus avoiding the overshoot phenomenon caused by excessive force.
[0012] 2) By setting the synchronous lifting platform to adjust the height of the mounting seat, the circuit breakers of multiple series models with different shell sizes can be tested, ensuring that the central axis of the operating rod of the circuit breaker is basically consistent with the central axis of the tension and compression buckle.
[0013] 3) By setting a through slot on the tension and compression buckle and limiting the width of the slot opening to be 1 mm larger than the diameter of the operating rod of the circuit breaker, strict centering is required during installation to fit, further ensuring the accuracy of the test results. Description of the drawings
[0014] The present utility model will be further described below in conjunction with the drawings:
[0015] Figure 1 is a schematic diagram of the present utility model;
[0016] Figure 2 is a schematic diagram of the principle of the tension and compression buckle of the present utility model;
[0017] In the figure: 1. Circuit breaker; 2. Tension and compression buckle; 21. Through slot; 3. Fixed table; 4. Digital display push-pull force gauge; 5. Guide rail; 6. Electric speed-regulating push rod; 7. Mounting seat; 8. Synchronous lifting platform; 9. Connecting plate; 10. Jack; 11. Spring; 12. Limiting plate. Specific embodiments
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0019] The technical solutions of the present utility model will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be repeated in some embodiments. Embodiment
[0020] As Figures 1 to 2As shown in the figure, the utility model provides a breaker operating force test device, which includes an installation mechanism, a breaker 1, a tension and compression buckle 2, a fixed table 3, a digital display push-pull force gauge 4, a guide rail 5 and an electric speed-regulating push rod 6. The breaker 1 is connected to the installation mechanism. One end of the tension and compression buckle 2 is connected to the digital display push-pull force gauge 4, and the other end is connected to the breaker 1. The guide rail 5 is installed on the fixed table 3. The digital display push-pull force gauge 4 is slidably connected to the guide rail 5. The electric speed-regulating push rod 6 is connected to the digital display push-pull force gauge 4 and drives the digital display push-pull force gauge 4 to make a reciprocating motion in the direction of the breaker 1. By setting the running speed of the electric speed-regulating push rod 6, during the test, press the forward button of the electric speed-regulating push rod 6 to make the electric speed-regulating push rod 6 run. When the operating rod of the breaker 1 just reaches the locked state, that is, when the breaker 1 makes a sound, stop running at this time. The peak force displayed by the digital display push-pull force gauge 4 is the closing force. Press the backward button of the electric speed-regulating push rod 6 to pull the operating rod of the breaker 1 so that it just disconnects and remains in the tripped state, that is, when the breaker 1 makes a sound again. At this time, the peak force displayed by the digital display push-pull force gauge 4 is the opening force. Since the electric speed-regulating push rod 6 runs at a constant speed and drives the operating rod of the breaker 1 to move forward or backward smoothly and at a constant speed, it is possible to avoid the overshoot phenomenon caused by excessive force.
[0021] Specifically, the installation mechanism includes an installation seat 7 and a synchronous lifting table 8. The breaker 1 is placed on the installation seat 7. The synchronous lifting table 8 is fixedly connected to the installation seat 7 and drives the installation seat 7 to move up and down. By setting the synchronous lifting table 8, the height of the installation seat 7 is adjusted, so as to test breakers 1 of multiple series models with different shell sizes, and ensure that the axis of the operating rod of the breaker 1 is basically aligned with the central axis of the tension and compression buckle 2.
[0022] After the breaker 1 and the tension and compression buckle 2 are connected, in order to limit the position of the breaker 1 and prevent the breaker 1 from moving around after being stressed, resulting in inaccurate measurement results, clamping components are arranged on both sides of the installation seat 7. The clamping components include a connecting plate 9, a top rod 10 and a spring 11. The connecting plate 9 is respectively connected to the installation seat 7 and the top rod 10. The spring 11 is sleeved on the top rod 10 and abuts against the breaker 1. For the convenience of installation and positioning, a limiting plate 12 is provided at the front end of the installation seat 7, and the front end of the breaker 1 abuts against the limiting plate 12.
[0023] Specifically, in order to further ensure the accuracy of the test results, a through slot 21 is opened at one end of the tension and compression buckle 2 connected to the breaker 1. The breaker 1 and the tension and compression buckle 2 are clamped through the through slot 21. The width of the slot opening of the through slot 21 is X, and the diameter of the operating rod of the breaker 1 is Y, and X - Y = 1mm. Since the gap between the slot opening of the through slot 21 and the operating rod of the breaker 1 is very small, if they are not strictly centered during installation, they cannot be matched.
[0024] In addition to the above preferred embodiments, the present utility model has other implementation manners. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection claimed by the present utility model.
Claims
1. A circuit breaker operating force testing device, comprising a mounting mechanism, a circuit breaker (1), a pull-press buckle (2), a fixing platform (3), a digital display push-pull force gauge (4), a guide rail (5) and an electric speed regulating push rod (6), characterized in that: The circuit breaker (1) is connected to the mounting mechanism, one end of the pull-press buckle (2) is connected to the digital push-pull force gauge (4), and the other end is connected to the circuit breaker (1), the guide rail (5) is installed on the fixed platform (3), the digital push-pull force gauge (4) is slidably connected to the guide rail (5), and the electric speed regulating push rod (6) is connected to the digital push-pull force gauge (4) and drives the digital push-pull force gauge (4) to reciprocate in the direction of the circuit breaker (1).
2. A circuit breaker operating force testing device according to claim 1, characterized in that: The mounting mechanism comprises a mounting seat (7) and a synchronous lifting platform (8); the circuit breaker (1) is placed on the mounting seat (7); the synchronous lifting platform (8) is fixedly connected to the mounting seat (7) and drives the mounting seat (7) to move up and down.
3. A circuit breaker operating force testing device according to claim 2, characterized in that: Clamping assemblies are arranged on both sides of the mounting seat (7), the clamping assemblies comprising a connecting plate (9), a push rod (10) and a spring (11), the connecting plate (9) being respectively connected to the mounting seat (7) and the push rod (10), the spring (11) being sleeved on the push rod (10) and abutting against the circuit breaker (1).
4. A circuit breaker operating force testing device according to claim 2, characterized in that: A limiting plate (12) is provided at the front end of the mounting seat (7), and the circuit breaker (1) abuts against the limiting plate (12).
5. A circuit breaker operating force testing device according to claim 1, characterized in that: One end of the pull-and-press buckle (2) connected to the circuit breaker (1) is provided with a through-slot (21), and the circuit breaker (1) and the pull-and-press buckle (2) are connected via the through-slot (21).
6. A circuit breaker operating force testing device according to claim 5, characterized in that: The width of the slot that penetrates the slot (21) is X, the diameter of the operating rod of the circuit breaker (1) is Y, and XY=1 mm.