A method for detecting the overlap amount of a circuit breaker reclosing buckle and a locking buckle

Abstract

The application provides a circuit breaker buckle and lock overlap amount detection method, and relates to the technical field of low-voltage electricity. The detection method comprises the following steps: measuring the included angle between the traction rod and the base when the buckle and the lock are buckled to obtain an actual angle; comparing the actual angle with a preset angle to obtain an angle difference between the actual angle and the preset angle, wherein the preset angle is the included angle between the traction rod and the base when the buckle and the lock are buckled and have a preset overlap amount; and determining whether the buckle and lock overlap amount is qualified through the angle difference. The method is convenient to operate and detect, and improves the convenience of buckle and lock overlap amount detection. Moreover, the measurement precision is high, the consistency and measurement reliability of the buckle and lock overlap amount are improved, the unqualified circuit breakers with unqualified buckle and lock overlap amount are avoided to a certain extent, the risk of unqualified product outflow is reduced, the consistency and yield of the circuit breaker are improved, and the performance of the circuit breaker is ensured.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and in particular to a method for detecting the overlap of circuit breaker tripping and locking. Background Technology

[0002] The circuit breaker includes a base, a re-clamp, a latch, and a pull rod. The re-clamp is mounted on the base and connected to the circuit breaker's operating mechanism. The pull rod is mounted on the base and is rotatable relative to the base. The latch is fixed to the pull rod.

[0003] When the circuit breaker is closed, the traction rod remains in the pre-tightened position, with the latch and locking buckle engaged and abutting each other. The latch and locking buckle have a preset overlap, forming a locked engagement state. When the circuit breaker is opened, the traction rod rotates rapidly under the action of the tripping force, and the locking buckle rotates with the traction rod. The locking buckle and latch quickly separate, forming a tripped unlocked state, and the circuit breaker opens, cutting off the circuit.

[0004] If the overlap between the latch and the locking mechanism is too small, the circuit breaker's tripping mechanism is prone to slippage, affecting the power supply operation of the line. If the overlap is too large, the operating mechanism cannot trip when a line fault occurs, causing the circuit breaker to fail to disconnect in time and failing to protect the line and electrical equipment. Therefore, the overlap of the latch and locking mechanism needs to be tested during the circuit breaker manufacturing process. However, in related technologies, the overlap of the latch and locking mechanism often relies on visual judgment by experienced workers, resulting in poor consistency and a high risk of defective products being released. Summary of the Invention

[0005] This application provides a method for detecting the overlap between the re-clamping and locking of a circuit breaker, so as to improve the consistency of the overlap between the re-clamping and locking and reduce the risk of defective products being released.

[0006] This application provides a method for detecting the overlap between the re-clamp and latch of a circuit breaker. The circuit breaker includes a base and a re-clamp, a latch, and a traction rod disposed on the base. The latch and the traction rod are relatively fixed. When the circuit breaker is closed, the re-clamp and the latch abut and overlap. The detection method includes: The actual angle is obtained by measuring the angle between the traction rod and the base when the re-clamp and the locking buckle are engaged. The actual angle is compared with the preset angle to obtain the angle difference between the actual angle and the preset angle. The preset angle is the angle between the traction rod and the base when the re-clamp and the locking buckle have a preset overlap. The overlap between the re-fastener and the locking buckle is determined by the angle difference. When the angle difference is within the preset range, the overlap between the re-fastener and the locking buckle is qualified; when the angle difference exceeds the preset range, the overlap between the re-fastener and the locking buckle is unqualified.

[0007] The circuit breaker re-clamping and locking overlap detection method provided in this application measures the angle between the traction rod and the base to obtain the actual angle, and compares this actual angle with a preset angle between the traction rod and the base when the re-clamping and locking have a preset overlap. If the angle difference is within the preset range, the re-clamping and locking overlap is qualified; if the angle difference is not within the preset range, the re-clamping and locking overlap is unqualified. In specific testing, the re-clamping and locking are kept in the engaged state, and then the actual angle between the traction rod and the base is measured. The actual angle is then compared with the preset angle to obtain the angle difference. This angle difference can be used to detect whether the re-clamping and locking overlap is qualified. In other words, the re-clamping and locking overlap can be detected by measuring the angle between the traction rod and the base. This method is convenient to operate and easy to test, improving the convenience of re-clamping and locking overlap detection.

[0008] Furthermore, compared with the related technologies where the overlap of the re-clamping and locking relies on the visual judgment of experienced workers, the circuit breaker re-clamping and locking overlap detection method provided in this application uses the angle between the traction rod and the base to measure whether the overlap of the re-clamping and locking is qualified. The measurement accuracy is higher, thereby improving the consistency and measurement reliability of the re-clamping and locking overlap. To a certain extent, it avoids the outflow of circuit breakers with unqualified re-clamping and locking overlap, thereby reducing the risk of defective products being outflowed, improving the consistency and yield of circuit breakers, and ensuring the performance of circuit breakers.

[0009] In one possible design, the actual angle is obtained by measuring the angle between the traction rod and the base using a measuring instrument.

[0010] The above solution uses a measuring instrument to measure the angle between the traction rod and the base, which is convenient and helps improve work efficiency. At the same time, the high accuracy of the angle measurement helps improve the detection accuracy of the overlap between the re-clamp and the locking mechanism, ensuring the yield rate and breaking performance of the circuit breakers where the re-clamp and locking mechanism are located.

[0011] In one possible design, after measuring the angle between the traction rod and the base when the latch and lock are engaged to obtain the actual angle, the testing method also includes: The actual angle is displayed on a monitor, which is electrically connected to the measuring instrument.

[0012] By using the above method, when measuring the angle between the traction rod and the base with a measuring instrument, a display is set up and electrically connected to the measuring instrument. In this way, the actual angle measured by the measuring instrument can be displayed on the display in real time. The actual angle is clear and intuitive, which helps to improve work efficiency.

[0013] In one possible design, the actual angle is compared with a preset angle by a detector to obtain the angle difference, wherein the detector is electrically connected to the measuring instrument.

[0014] With the above scheme, when measuring the angle between the traction rod and the base using a measuring instrument, a detector is set up and electrically connected to the measuring instrument. In this way, when the measuring instrument measures the actual angle, the detector can quickly compare the actual angle with the preset angle to obtain the angle difference, thus improving the detection efficiency.

[0015] In one possible design, when the circuit breaker is located on the production line, a stop structure is installed on the production line. The stop structure and the detector are both electrically connected to the production line controller. After determining whether the overlap of the latch and the locking mechanism is qualified by measuring the angle difference—where the overlap is qualified when the angle difference is within a preset range, and unqualified when the angle difference exceeds the preset range—the detection method further includes: when the angle difference detected by the detector is within the preset range, the controller drives the stop structure to open and allow the circuit breaker with qualified overlap to continue moving on the production line to enter the downstream process.

[0016] The above solution involves installing a stop structure on the production line to test the overlap of the re-clamping and locking mechanism. This stop structure is electrically connected to the production line controller. After determining whether the overlap of the re-clamping and locking mechanism is qualified, the controller drives the stop structure to open when the angle difference is within a preset range (i.e., the overlap of the re-clamping and locking mechanism is qualified). This allows the circuit breaker with qualified overlap to proceed to downstream processes, such as time-delay testing. This testing method can be run on the production line, expanding its applicability. Furthermore, the test results can be fed back to the production line in a timely manner, improving production efficiency.

[0017] In one possible design, when the circuit breaker is located on the production line, a stop structure is installed on the production line. The stop structure and the detector are electrically connected to the production line controller. After determining whether the overlap of the latching and locking is qualified by measuring the angle difference—where the overlap is qualified when the angle difference is within a preset range, and unqualified when the angle difference exceeds the preset range—the detection method further includes: when the angle difference detected by the detector exceeds the preset range, the controller drives the stop structure to close, thereby stopping the circuit breaker with unqualified overlap of the latching and locking.

[0018] Through the above scheme, after determining whether the overlap between the re-clamp and the latch is qualified, the controller drives the stop structure to close when the angle difference exceeds the preset range (i.e., the overlap between the re-clamp and the latch is unqualified). The stop structure prevents the circuit breaker with unqualified overlap from entering the downstream process, effectively avoiding the outflow of products with unqualified overlap, and further reducing the risk of defective products. Furthermore, the detection results are linked to the production line, allowing for timely feedback and improving production efficiency.

[0019] In one possible design, the measuring instrument includes at least one of a laser angle meter, an optical right angle meter, and a coordinate measuring machine.

[0020] The above solution enables automated detection of included angles. It has a simple structure, is easy to operate, is suitable for small operating spaces, and has high measurement accuracy.

[0021] In one possible design, before measuring the angle between the traction rod and the base when the re-clamp and the locking buckle are engaged to obtain the actual angle, the testing method includes: adjusting the position of the traction rod so that the re-clamp and the locking buckle abut and engage.

[0022] By using the above method, before measuring the angle between the traction rod and the base, the position of the traction rod is adjusted so that the re-clamp and the locking buckle are kept in the abutting and locked state. Even if the traction rod is kept in the pre-tightened position on the base, the measurement accuracy and reliability of the re-clamp and locking buckle overlap are high.

[0023] In one possible design, the top of the base has a first plane, and the traction rod has a second plane for cooperating with the tripping mechanism of the circuit breaker. Part of the second plane is exposed outside the base. The actual angle is the angle between the first plane and the second plane when the re-clamp and the latch are engaged and abutted. The preset angle is the angle between the first plane and the second plane when the re-clamp and the latch have a preset overlap.

[0024] The above method measures the angle between the second plane of the traction rod and the first plane at the top of the base to determine whether the overlap between the re-clamp and the locking buckle is qualified. The structure is simple and easy to see, and the measurement is convenient, which helps to improve the detection accuracy of the overlap between the re-clamp and the locking buckle.

[0025] In one possible design, the preset range is ±2°.

[0026] By using the above method, judging whether the angle difference between the actual angle and the preset angle between the traction rod and the base is within the preset range, it is possible to determine whether the overlap of the re-clamp and the locking buckle is qualified. This makes the detection of the overlap of the re-clamp and the locking buckle more intuitive and easier to judge, improving the detection accuracy. Furthermore, setting the preset range to ±2° allows the actual angle to be controlled within a small allowable error range, resulting in higher detection accuracy of the overlap of the re-clamp and the locking buckle and further reducing the risk of defective products being released. Attached Figure Description

[0027] Figure 1 This is an assembly diagram of a circuit breaker according to an embodiment of this application.

[0028] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0029] Figure 3 This is an isometric view of a circuit breaker according to an embodiment of this application from a first perspective.

[0030] Figure 4 This is an isometric view of a circuit breaker according to an embodiment of this application from a second perspective.

[0031] Figure 5 This is a flowchart illustrating the circuit breaker re-clamping and latching overlap detection method according to an embodiment of this application. Figure 1 .

[0032] Figure 6 This is a flowchart illustrating the circuit breaker re-clamping and latching overlap detection method according to an embodiment of this application. Figure 2 .

[0033] Figure 7 This is a flowchart illustrating the circuit breaker re-clamping and latching overlap detection method according to an embodiment of this application. Figure 3 .

[0034] Figure 8 This is a flowchart illustrating the circuit breaker re-clamping and latching overlap detection method according to an embodiment of this application. Figure 4 .

[0035] Explanation of reference numerals in the attached drawings: 1. Base; 11. First plane; 2. Re-clamp; 3. Lock; 4. Traction rod; 41. Second plane. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Unless otherwise defined, 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 application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0038] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0040] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the circuit breaker re-clamping and latching overlap detection method of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0042] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0043] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection secured by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] The circuit breaker includes a base, a re-clamp, a latch, and a pull rod. The re-clamp is mounted on the base and connected to the circuit breaker's operating mechanism. The pull rod is mounted on the base and is rotatable relative to the base. The latch is fixed to the pull rod.

[0045] When the circuit breaker is closed, the traction rod remains in the pre-tightened position, with the latch and locking buckle engaged and abutting each other. The latch and locking buckle have a preset overlap, forming a locked engagement state. When the circuit breaker is opened, the traction rod rotates rapidly under the action of the tripping force, and the locking buckle rotates with the traction rod. The locking buckle and latch quickly separate, forming a tripped unlocked state, and the circuit breaker opens, cutting off the circuit.

[0046] If the overlap between the latch and the locking mechanism is too small, the circuit breaker's tripping mechanism is prone to slippage, affecting the power supply operation of the line. If the overlap is too large, the operating mechanism cannot trip when a line fault occurs, causing the circuit breaker to fail to disconnect in time and failing to protect the line and electrical equipment. Therefore, the overlap of the latch and locking mechanism needs to be tested during the circuit breaker manufacturing process. However, in related technologies, the overlap of the latch and locking mechanism often relies on visual judgment by experienced workers, resulting in poor consistency and a high risk of defective products being produced.

[0047] Based on this, this embodiment provides a method for detecting the overlap of the re-clamp and latch of a circuit breaker. By measuring the angle between the traction rod and the base when the re-clamp and latch are engaged, the method detects whether the overlap of the re-clamp and latch is qualified. Compared with the related technology where the overlap of the re-clamp and latch relies on the visual judgment of experienced workers, this method improves the consistency and measurement reliability of the overlap of the re-clamp and latch, thereby improving the consistency and yield of the circuit breaker, reducing the risk of defective products leaving the circuit breaker, and ensuring the performance of the circuit breaker.

[0048] The following detailed description, with reference to the accompanying drawings and specific embodiments, illustrates a method for detecting the overlap of circuit breaker tripping and locking provided in this embodiment.

[0049] refer to Figures 1 to 4 As shown, the circuit breaker includes a base 1, a re-clamp 2, a latch 3, a traction rod 4, and an operating mechanism (not shown).

[0050] Both the re-clamp 2 and the operating mechanism are mounted on the base 1, with the re-clamp 2 connected to the operating mechanism. The operating mechanism can drive the re-clamp 2 to rotate, thereby switching the re-clamp 2 between the engaged and disengaged states.

[0051] The latch 3 is connected to the traction rod 4 and is fixed relative to the traction rod 4. The traction rod 4 can rotate relative to the base 1 between the pre-tightened position and the unlocked position, so as to drive the latch 3 to rotate, and switch the latch 3 between the engaged state and the disengaged state.

[0052] In practice, the driving force for the rotation of the traction rod 4 can be, for example, the tripping force of the circuit breaker's tripping mechanism or an external operating force.

[0053] refer to Figure 2 As shown, when the circuit breaker is closed, the traction rod 4 remains in the pre-tightened position, and the latch 2 and the locking latch 3 are engaged and abut against each other, that is, the latch 2 and the locking latch 3 are engaged and have an overlap. Both remain engaged, and the circuit breaker connects the circuit.

[0054] When the circuit breaker trips, the traction rod 4 rotates to the unlocked position under the action of the tripping force, causing the latch 3 to separate from the re-latch 2. The re-latch 2 and the latch 3 are in the tripped state, the circuit breaker trips, and the circuit is switched.

[0055] refer to Figure 5 and Figure 6 As shown, this embodiment provides a method for detecting the overlap between the circuit breaker's tripping and locking mechanisms. The method includes: S101. Measure the angle α between the traction rod 4 and the base 1 when the re-clamp 2 and the locking buckle 3 are engaged, and obtain the actual angle.

[0056] When measuring the included angle, the circuit breaker to be tested (hereinafter referred to as the circuit breaker) is closed to the position, so that its traction rod 4 is held in the pre-tightened position. Then, the latch 2 and the locking latch 3 are kept in contact and abut against each other, that is, the latch 2 and the locking latch 3 are fastened together, and there is an overlap between the two. Then, the included angle α between the traction rod 4 and the base 1 is measured to obtain the actual angle, for reference. Figure 2 and Figure 4 As shown.

[0057] Definition: When the circuit breaker is closed, the overlap of its latch 2 and latch 3 is the actual overlap. At this time, the angle α between the traction rod 4 and the base 1 is the actual angle.

[0058] refer to Figure 2 As shown, the overlap between the second buckle 2 and the third buckle 3 is different, and correspondingly, the angle α between the traction rod 4 and the base 1 is different, that is, the actual angle measured is different. In other words, the overlap between the second buckle 2 and the third buckle 3 and the angle α between the traction rod 4 and the base 1 are matched. In this way, the overlap between the second buckle 2 and the third buckle 3 can be fed back by the actual angle between the traction rod 4 and the base 1, making the detection of the overlap between the second buckle 2 and the third buckle 3 more convenient and intuitive.

[0059] In some embodiments, the actual angle can be obtained by measuring the angle α between the traction rod 4 and the base 1 when the re-clamp 2 and the locking buckle 3 are engaged, for example, by measuring the angle α between the traction rod 4 and the base 1.

[0060] The angle α between the traction rod 4 and the base 1 is measured using a measuring instrument, which is convenient and helps improve work efficiency. At the same time, the high accuracy of the angle measurement helps improve the detection accuracy of the overlap between the re-clamp 2 and the latch 3, ensuring the yield rate and breaking performance of the circuit breakers where the re-clamp 2 and the latch 3 are located.

[0061] In practice, the measuring instrument can be at least one of the following: a laser angle meter, an optical right angle meter, or a coordinate measuring machine. It can achieve automated detection of the included angle, has a simple structure, is easy to operate, is suitable for small operating spaces, and has high measurement accuracy.

[0062] Of course, in other embodiments, the included angle α between the traction rod 4 and the base 1 can be measured using manual tools such as a universal angle gauge.

[0063] S102. Compare the actual angle with the preset angle to obtain the angle difference between the actual angle and the preset angle. The preset angle is the angle between the traction rod 4 and the base 1 when the re-clamp 2 and the locking buckle 3 are fastened together with a preset overlap.

[0064] It should be noted that the preset overlap amount when latch 2 and latch 3 are engaged in the closed state of the circuit breaker is a core design parameter that has been validated from multiple dimensions during the design phase. Furthermore, after the design validation, the overlap amount parameter is repeatedly tested and calibrated through prototype manufacturing. Only after verifying that it meets all performance requirements will the preset overlap amount be solidified as a formal production parameter and used as the basis for subsequent processing, assembly, and debugging. Therefore, during mass production of circuit breakers, the preset overlap amount of latch 2 and latch 3 is a known production parameter.

[0065] Furthermore, the preset overlap amounts for re-clamping 2 and latching 3 vary depending on the circuit breaker model. Different circuit breaker models have different preset overlap amounts for re-clamping 2 and latching 3. During the circuit breaker manufacturing process, the corresponding preset overlap amount parameters should be referenced.

[0066] In this embodiment, the preset angle can be specifically understood as the angle α between the traction rod 4 and the base 1 when the circuit breaker is closed and the latch 2 and latch 3 have a preset overlap. The preset angle can be obtained based on the preset overlap. Of course, the preset angle can also be a known production parameter, just like the preset overlap.

[0067] In practice, the actual angle obtained in step S101 is compared with the preset angle to obtain the angle difference between the two. This angle difference reflects both the difference between the actual angle α between the traction rod 4 and the base 1 when the re-clamp 2 and the locking buckle 3 have an actual overlap and the preset angle between the traction rod 4 and the base 1 when the re-clamp 2 and the locking buckle 3 have a preset overlap, and the difference between the actual overlap of the re-clamp 2 and the locking buckle 3 and the preset overlap. In this way, the overlap of the re-clamp 2 and the locking buckle 3 can be fed back through the angle difference between the traction rod 4 and the base 1, making the detection of the overlap of the re-clamp 2 and the locking buckle 3 more convenient and intuitive.

[0068] S103. Determine whether the overlap amount of the re-fastener 2 and the multi-fastener is qualified by the angle difference. When the angle difference is within the preset range, the overlap amount of the re-fastener 2 and the locking buckle 3 is qualified; when the angle difference exceeds the preset range, the overlap amount of the re-fastener 2 and the locking buckle 3 is unqualified.

[0069] In other words, if the angle difference between the traction rod 4 and the base 1 is within the preset range, the overlap between the latch 2 and the locking buckle 3 is acceptable. If the angle difference between the traction rod 4 and the base 1 is not within the preset range, the overlap between the latch 2 and the locking buckle 3 is unacceptable.

[0070] Based on this, the actual angle α between the traction rod 4 and the base 1 can be larger or smaller than the preset angle. However, as long as the angle difference between the two is within the preset range, the overlap between the buckle 2 and the lock 3 is acceptable.

[0071] In practice, if the actual angle between the traction rod 4 and the base 1 is larger than the preset angle, but the angle difference between the actual angle and the preset angle is within the preset range, then the overlap between the re-clamp 2 and the lock 3 is considered to be within the allowable error range, and the overlap between the re-clamp 2 and the lock 3 is considered to be qualified.

[0072] If the actual angle α between the traction rod 4 and the base 1 is smaller than the preset angle, but as long as the angle difference between the preset angle and the actual angle is within the preset range, then the overlap between the re-fastener 2 and the locking buckle 3 is considered to be within the allowable error range, and the overlap between the re-fastener 2 and the locking buckle 3 is qualified.

[0073] In practice, the preset range can be, for example, ±2°.

[0074] In other words, if the angle difference between the actual angle between the traction rod 4 and the base 1 and the preset angle is equal to or within 2°, that is, the angle difference between the two is not greater than 2°, then the overlap between the re-fastener 2 and the locking buckle 3 is considered to be within the allowable error range, and the overlap between the re-fastener 2 and the locking buckle 3 is qualified.

[0075] If the actual angle between the traction rod 4 and the base 1 differs from the preset angle by more than 2°, then the overlap between the re-clamp 2 and the locking buckle 3 is considered to exceed the allowable error range, and the overlap between the re-clamp 2 and the locking buckle 3 is considered unqualified.

[0076] By judging whether the angle difference between the actual angle between the traction rod 4 and the base 1 and the preset angle is within the preset range, it is possible to determine whether the overlap between the re-clamp 2 and the locking buckle 3 is qualified, making the detection of the overlap between the re-clamp 2 and the locking buckle 3 more intuitive and easier to judge, thus improving the detection accuracy.

[0077] Meanwhile, setting the preset range to ±2° allows the actual angle to be controlled within a small allowable error range, resulting in higher detection accuracy of the overlap between the second buckle and the third buckle, further reducing the risk of defective products leaving the factory.

[0078] The detection method provided in this embodiment measures the angle α between the traction rod 4 and the base 1 to obtain the actual angle, and compares this actual angle with the preset angle between the traction rod 4 and the base 1 when the re-fastener 2 and the locking buckle 3 have a preset overlap. If the angle difference is within the preset range, the overlap of the re-fastener 2 and the locking buckle 3 is qualified; if the angle difference is not within the preset range, the overlap of the re-fastener 2 and the locking buckle 3 is unqualified. In specific testing, the re-fastener 2 and the locking buckle 3 are kept in the fastened state, and then the actual angle between the traction rod 4 and the base 1 is measured. The actual angle is then compared with the preset angle to obtain the angle difference. This angle difference can be used to detect whether the overlap of the re-fastener 2 and the locking buckle 3 is qualified. In other words, by measuring the angle α between the traction rod 4 and the base 1, the overlap of the re-fastener 2 and the locking buckle 3 can be detected as qualified. The operation is convenient and the detection is easy, improving the convenience of detecting the overlap of the re-fastener 2 and the locking buckle 3.

[0079] Furthermore, compared with the related technologies where the overlap of the re-clamp and the latch relies on visual judgment by experienced workers, the circuit breaker re-clamp and latch overlap detection method provided in this application uses the included angle α between the traction rod 4 and the base 1 to measure whether the overlap of the re-clamp 2 and the latch 3 is qualified. The measurement accuracy is high, thereby improving the consistency and measurement reliability of the overlap of the re-clamp 2 and the latch 3. To a certain extent, it avoids the outflow of circuit breakers with unqualified overlap of the re-clamp 2 and the latch 3, thereby reducing the risk of defective products being outflowed, improving the consistency and yield of circuit breakers, and ensuring the performance of circuit breakers.

[0080] refer to Figure 6 As shown, in some embodiments, after step S101, the detection method further includes: S1011. Display the actual angle on the monitor, wherein the monitor is electrically connected to the measuring instrument.

[0081] When measuring the angle α between the traction rod 4 and the base 1 using a measuring instrument, by setting up a display and electrically connecting the display to the measuring instrument, the actual angle measured by the measuring instrument can be displayed on the display in real time. The actual angle is clear and intuitive, which helps to improve work efficiency.

[0082] In practice, the display and measuring instrument can be electrically connected using a wiring harness. Alternatively, they can be connected wirelessly.

[0083] Of course, in other embodiments, the measuring instrument may have a digital display function, for example.

[0084] In some embodiments, the actual angle is compared with a preset angle by a detector to obtain the angle difference, wherein the detector is electrically connected to the measuring instrument.

[0085] When measuring the angle α between the traction rod 4 and the base 1 using a measuring instrument, a detector is set up and electrically connected to the measuring instrument. This allows the detector to quickly compare the actual angle with the preset angle and calculate the angle difference, thus improving the detection efficiency.

[0086] In practice, the detector and measuring instrument can be electrically connected using a wiring harness, for example. Alternatively, they can be connected wirelessly.

[0087] In other embodiments, since the preset angle is known, after measuring the actual angle, the inspector can also use a calculator or the like to calculate the angle difference between the actual angle and the preset angle.

[0088] In practice, the detector can have a digital display function, so that the detector can display the angle difference, which makes it easier for the inspector to obtain the difference between the actual angle and the preset angle in a timely manner, and to determine whether the overlap between the second buckle and the third buckle is qualified, thus making the inspection efficiency higher.

[0089] In other embodiments, the detector may be electrically connected to a display, so that when the detector obtains the angle difference, the display can show the angle difference obtained by the detector, which is intuitive and clear, and makes the work more efficient.

[0090] In a practical implementation, the detector can be, for example, an encoder, a phase meter, etc.

[0091] refer to Figure 7 As shown, when the circuit breaker is located on a production line (not shown), a stop structure (not shown) is provided on the production line. Both the stop structure and the detector are electrically connected to the production line's controller. In some embodiments, after step S103, the detection method further includes: Step S1041: When the angle difference detected by the detector is within the preset range, the controller drives the stop structure to open and allow the circuit breaker with qualified overlap between the re-clamp 2 and the latch 3 to continue moving on the production line to enter the downstream process.

[0092] When inspecting the overlap between latch 2 and latch 3 on the production line, a stop structure is installed on the production line and electrically connected to the production line controller. After determining whether the overlap between latch 2 and latch 3 is qualified, the controller drives the stop structure to open when the angle difference is within a preset range (i.e., the overlap between latch 2 and latch 3 is qualified), allowing the circuit breaker with qualified overlap between latch 2 and latch 3 to proceed to downstream processes, such as time-delay testing. This inspection method can be run on the production line, expanding its applicability. Furthermore, the inspection results can be fed back to the production line in a timely manner, improving production efficiency.

[0093] In practice, the stop structure can be installed on the production line at the location where the overlap between latch 2 and latch 3 is detected. If the overlap between latch 2 and latch 3 is found to be within acceptable limits, the stop structure can quickly release the circuit breaker, allowing it to proceed to the downstream process, thus improving work efficiency.

[0094] refer to Figure 7 As shown, in some embodiments, after step S103, the detection method further includes: Step S1042: When the angle difference detected by the detector exceeds the preset range, the controller drives the stop structure to close, so as to stop the circuit breaker whose overlap between the re-clamp 2 and the latch 3 is not qualified.

[0095] After determining whether the overlap between latch 2 and latch 3 is acceptable, the controller drives the stop structure to close when the angle difference exceeds the preset range (i.e., the overlap between latch 2 and latch 3 is unacceptable). This stop structure prevents the circuit breaker with unacceptable overlap between latch 2 and latch 3 from entering the downstream process, effectively avoiding the outflow of products with unacceptable overlap between latch 2 and latch 3, and further reducing the risk of defective products. Furthermore, the detection results are linked to the production line, allowing for timely feedback and improving production efficiency.

[0096] In practice, the stop structure can be a stop arm, a stop block, etc.

[0097] When the circuit breaker is closed, the traction rod 4 remains in the pre-tightened position, keeping the re-clamp 2 and the latch 3 in contact and engaged. When the circuit breaker is open, the traction rod 4 is in the unlocked position, and the re-clamp 2 and the latch 3 are disengaged.

[0098] Specifically, whether the pre-tightening position and the unlocking position of the traction rod 4 are the same depends on the design requirements of the circuit breaker.

[0099] In other words, the pre-tensioning position and the unlocking position of the traction rod 4 may be the same, or they may be different.

[0100] Based on this, refer to Figure 8 As shown, in some embodiments, before step S101, the detection method further includes: Step S100: Adjust the position of the traction rod 4 so that the re-latch 2 and the locking buckle 3 abut and engage.

[0101] Before measuring the angle α between the traction rod 4 and the base 1, adjust the position of the traction rod 4 so that the re-clamp 2 and the locking buckle 3 are in abutting and engaged state. This ensures that the traction rod 4 is kept in the pre-tightened position on the base 1, thus improving the accuracy and reliability of the measurement of the overlap between the re-clamp 2 and the locking buckle 3.

[0102] In practical implementation, for small-batch trial production, the position of the traction rod 4 can be manually adjusted by holding and rotating it. Alternatively, tools such as torque wrenches, T-wrenches, or lever-type tools can be used to adjust the position of the traction rod 4.

[0103] On a mass production line, customized fixtures can be used to adjust the position of the traction rod 4, such as traction rod angle positioning blocks, multi-station adjustment jigs, and pneumatic torque wrenches. This results in high consistency and adjustment efficiency.

[0104] Of course, if the pre-tightening position and the unlocking position of the traction rod 4 on the base 1 are the same, when checking the overlap of the re-clamp 2 and the lock 3, step S101 can be executed directly.

[0105] refer to Figures 2 to 4 As shown, in some embodiments, the top of the base 1 has a first plane 11, and the traction rod 4 has a second plane 41 for cooperating with the tripping mechanism (not shown) of the circuit breaker. Part of the second plane 41 is exposed outside the base 1. The actual angle is the angle α between the first plane 11 and the second plane 41 when the re-clamp 2 and the latch 3 are engaged and abutted. The preset angle is the angle between the first plane 11 and the second plane 41 when the re-clamp 2 and the latch 3 have a preset overlap.

[0106] The included angle α between the second plane 41 of the traction rod 4 and the first plane 11 at the top of the base 1 is measured to determine whether the overlap between the re-fastener 2 and the locking buckle 3 is qualified. The structure is simple and easy to see, and the measurement is convenient, which helps to improve the detection accuracy of the overlap between the re-fastener 2 and the locking buckle 3.

[0107] In a specific implementation, the first plane 11 can be, for example, the top surface of the base 1. The second plane 41 can be, for example, the side of the traction rod 4 facing away from the latch 3.

[0108] Of course, in other embodiments, for example, the included angle α between other positions of the traction rod 4 and the base 1 can also be measured, depending on the specific working conditions, and no further restrictions are imposed here.

Claims

1. A method for detecting the overlap between a circuit breaker's re-clamp and latch, the circuit breaker comprising a base and a re-clamp, a latch, and a traction rod disposed on the base, the latch and the traction rod being fixed relative to each other, wherein when the circuit breaker is closed, the re-clamp and the latch engage and overlap, characterized in that... The detection method includes: The actual angle is obtained by measuring the angle between the traction rod and the base when the re-clamp and the locking buckle are engaged. The actual angle is compared with the preset angle to obtain the angle difference between the actual angle and the preset angle, wherein the preset angle is the angle between the traction rod and the base when the re-hook and the lock buckle have a preset overlap; The overlap between the re-fastener and the lock is determined by the angle difference. When the angle difference is within a preset range, the overlap between the re-fastener and the lock is acceptable. When the angle difference exceeds the preset range, the overlap between the re-fastener and the lock is unacceptable. The base has a first plane at its top, and the traction rod has a second plane for engaging with the tripping mechanism of the circuit breaker. A portion of the second plane is exposed outside the base. The actual angle is the angle between the first plane and the second plane when the re-clamp and the latch engage and abut. The preset angle is the angle between the first plane and the second plane when the re-clamp and the latch have the preset overlap amount.

2. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 1, characterized in that, The actual angle is obtained by measuring the angle between the traction rod and the base using a measuring instrument.

3. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 2, characterized in that, After measuring the angle between the traction rod and the base when the re-clamp and the locking buckle are engaged to obtain the actual angle, the detection method further includes: The actual angle is displayed on a monitor, wherein the monitor is electrically connected to the measuring instrument.

4. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 2, characterized in that, The actual angle is compared with the preset angle by a detector to obtain the angle difference, wherein the detector is electrically connected to the measuring instrument.

5. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 4, characterized in that, When the circuit breaker is located on the production line, the production line is equipped with a stop structure, and the stop structure and the detector are electrically connected to the controller of the production line. The step of determining whether the overlap between the re-fastener and the locking buckle is qualified by using the angle difference, wherein when the angle difference is within a preset range, the overlap between the re-fastener and the locking buckle is qualified; when the angle difference exceeds the preset range, the overlap between the re-fastener and the locking buckle is unqualified, the detection method further includes: When the angle difference detected by the detector is within a preset range, the controller drives the stop structure to open and allow passage, so that the circuit breaker with qualified overlap between the re-clamp and the latch can continue to move on the production line to enter the downstream process.

6. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 4, characterized in that, When the circuit breaker is located on the production line, the production line is equipped with a stop structure, and the stop structure and the detector are electrically connected to the controller of the production line. The step of determining whether the overlap between the re-fastener and the locking buckle is qualified by using the angle difference, wherein when the angle difference is within a preset range, the overlap between the re-fastener and the locking buckle is qualified; when the angle difference exceeds the preset range, the overlap between the re-fastener and the locking buckle is unqualified, the detection method further includes: When the angle difference detected by the detector exceeds a preset range, the controller drives the stop structure to close, so as to stop the circuit breaker whose re-clamp and latch overlap amount is unqualified.

7. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 2, characterized in that, The measuring instrument includes at least one of a laser angle meter, an optical right angle meter, and a coordinate measuring machine.

8. The method for detecting the overlap of circuit breaker re-clamping and locking as described in claim 1, characterized in that, Before the step of measuring the angle between the traction rod and the base when the re-clamp and the locking buckle are engaged to obtain the actual angle, the detection method includes: Adjust the position of the traction rod so that the re-clamp and the locking buckle abut and engage.

9. The method for detecting the overlap of circuit breaker re-clamping and locking according to any one of claims 1 to 8, characterized in that, The preset range is ±2°.

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