Device, assembly and method for measuring meshing eccentric value of tulip contact
By distributing the dot matrix pressure sensor on the measuring device between the plum blossom contact and the static contact, the problem of unstable eccentricity test during meshing is solved, and a higher measurement accuracy and simplified testing process is achieved.
Patent Information
- Application Number
- CN202411716006.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-04-15
AI Technical Summary
In the prior art, the eccentricity test is unstable when the plum blossom contact is meshed with the static contact, resulting in the impact of measurement accuracy and accuracy.
A measuring device including an annular section and a shrinking diameter section is designed, and a dot matrix pressure sensor distributed on the annular section and a shrinking diameter section is used to obtain the engagement pressure and insertion depth of the plum contact and the static contact, thereby calculating the eccentricity value.
By accurately recording the contact position and engagement pressure between the plum contact and the static contact, more details of pressure change are provided, the measurement accuracy of eccentricity is improved, the testing process is simplified, and the reliability of measurement results is improved.
Smart Images
Figure CN119826748A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of circuit breakers, and in particular to a device, an assembly and a method for measuring an engagement eccentricity value of a plum blossom contact. Background Art
[0002] At present, the commonly used method for measuring the eccentricity of single-phase plum blossom contacts and static contacts on the market is the dial indicator detection method. The measurement steps of this method are to fix the contact on the measuring platform to ensure that the contact is stable and motionless. Use a dial indicator to measure the outer circle of the contact, slowly rotate the contact, and record the change in the reading on the dial indicator. By analyzing the dial indicator reading, the eccentricity value of the contact can be calculated.
[0003] As an existing technology, the dial indicator detection method has the advantages of high precision, wide applicability, and easy operation, but it has the following limitations: during the use of the dial indicator, due to the wear of the meter head, low processing precision, inappropriate size or interference of the digital display circuit, the reading may fluctuate. This fluctuation will directly affect the precision and accuracy of the measurement, resulting in the inability to directly obtain measurement results that meet the standards; although the use of the dial indicator is relatively simple, when measuring the eccentricity value, it is necessary to ensure that the contact is stable and motionless, and slowly rotate the contact to record the reading changes on the dial indicator. This process is relatively cumbersome and requires the measurement personnel to have a certain degree of patience and carefulness. At the same time, in order to ensure the accuracy of the measurement results, it is necessary to measure multiple times and take the average value, which further increases the cumbersomeness of the operation; the measurement range of the dial indicator is limited, and it is usually suitable for measuring small distances. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a device, assembly and method for measuring the eccentricity value of a plum blossom contact engagement, so as to solve the problem of unstable eccentricity value test when the plum blossom contact is engaged with a stationary contact.
[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A device for measuring the engagement eccentricity value of a plum blossom contact comprises an annular segment, one end of which in the length direction is provided with a reduced diameter segment, the annular segment and the circumferential outer surface of which are at least partially provided with annularly distributed dot matrix pressure sensors, and the dot matrix pressure sensors are used to obtain the compressed position and the compressed pressure.
[0006] In order to solve the above technical problems, other technical solutions adopted by the present invention are: A measurement assembly for the engagement eccentricity value of a plum blossom contact comprises a plum blossom contact and a stationary contact that match each other and the measuring device, wherein the measuring device is sleeved on the outer surface of the stationary contact, the reduced diameter section is located at the end of the stationary contact, and the dot matrix pressure sensor of the annular section is arranged in the engagement area of the plum blossom contact and the stationary contact, and the dot matrix pressure sensor is used to obtain the engagement pressure between the plum blossom contact and the stationary contact.
[0007] In order to solve the above technical problems, other technical solutions adopted by the present invention are: A method for measuring the meshing eccentricity of a plum blossom contact is applied to a measuring assembly for measuring the meshing eccentricity of a plum blossom contact and a stationary contact, and the measuring method comprises the following steps: S1, pressing the plum blossom contact into the stationary contact, and using the dot matrix pressure sensor to record the initial contact position between the plum blossom contact and the stationary contact; S2, detecting the pressed-in state of the plum blossom contact, and when it is detected that the plum blossom contact and the stationary contact are locked with each other, obtaining the actual meshing pressure and final contact position of each contact finger recorded by the dot matrix pressure sensor; S3. Calculate and obtain the eccentricity value between the plum blossom contact and the stationary contact based on the initial contact position, the final contact position and the actual meshing pressure.
[0008] The beneficial effects of the present invention are: providing a measuring device, assembly and method for the engagement eccentricity value of a plum blossom contact, wherein a measuring device with a reducing section is sleeved on a stationary contact, and dot matrix pressure sensors respectively arranged on the reducing section and the annular section are used to obtain the insertion depth of the contact finger on the plum blossom contact and the stationary contact and the pressure value of the engagement portion, and the eccentricity between the plum blossom contact and the stationary contact is calculated based on the above data, that is, the eccentricity value test is assisted by measuring the insertion depth of the contact finger on the plum blossom contact, providing more pressure change details, improving the measurement accuracy of the eccentricity value, and simplifying the test process. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 A cross-sectional view of a measuring assembly for the engagement eccentricity value of a plum blossom contact in an embodiment of the present invention; Figure 2 A schematic diagram of a measuring assembly for the engagement eccentricity value of a plum blossom contact in an embodiment of the present invention; Figure 3 It is a flow chart of a method for measuring the engagement eccentricity value of a plum blossom contact in an embodiment of the present invention; Description of labels: 1. Contact arm; 2. Contact finger; 3. Plum blossom contact; 4. Measuring device; 5. Dot matrix pressure sensor; 6. Static contact; 7. Guide ramp; 8. Fixed ring. DETAILED DESCRIPTION
[0010] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.
[0011] Please refer to Figure 1 as well as Figure 2 A measuring device 4 for the engagement eccentricity value of a plum blossom contact comprises an annular segment, one end of the annular segment in the length direction is provided with a reduced diameter segment, and the circumferential outer surfaces of the annular segment and the reduced diameter segment are at least partially provided with annularly distributed dot matrix pressure sensors 5, and the dot matrix pressure sensors 5 are used to obtain the pressure position and the pressure. The dot matrix pressure sensor 5 comprises a plurality of sub-pressure sensors distributed at a preset interval.
[0012] It can be understood that the eccentricity of the plum blossom contact 3 and the stationary contact 6 means that when the plum blossom contact 3 and the stationary contact 6 are engaged, their geometric center axes do not completely overlap or are not completely aligned. This situation will cause a positional offset or misalignment between the two during the mechanical contact process. The offset will affect the contact uniformity and electrical performance. In order to control the eccentricity, a measuring device 4 is provided in the present invention and is sleeved on the static contact 6. At the same time, a dot matrix pressure sensor 5 is provided on the variable diameter section and the annular section of the measuring device 4. The purpose is as follows: the inventor has found through many experiments that during the test of the eccentricity value of the meshing of some plum blossom contacts 3 and the static contact 6, at the moment of the initial contact, it is easy for the contact finger 2 to increase the eccentricity of the two under the action of the elastic force. However, in the conventional testing method, the dot matrix pressure sensor 5 is not provided in the variable diameter section, resulting in these situations not being detected, so that the measurement of the eccentricity value ignores the error caused by mechanical collision, and then causes inaccurate test results. In order to solve this problem, a dot matrix pressure sensor 5 is provided in the variable diameter section. On the one hand, it records the starting position of the contact between the plum blossom contact 3 and the static contact 6, and on the other hand, it provides more detailed pressure test data to avoid test errors caused by mechanical collision.
[0013] Please refer to Figure 2 A measuring assembly for the meshing eccentricity value of a plum blossom contact 3 comprises a plum blossom contact 3 and a stationary contact 6 that match each other and a measuring device 4, wherein the measuring device 4 is sleeved on the outer surface of the stationary contact 6, the reduced diameter section is located at the end of the stationary contact 6, and the dot matrix pressure sensor 5 of the annular section is arranged in the meshing area of the plum blossom contact 3 and the stationary contact 6, and the dot matrix pressure sensor 5 is used to obtain the meshing pressure between the plum blossom contact 3 and the stationary contact 6.
[0014] Specifically, the plum blossom contact 3 includes a plurality of contact fingers 2 arranged in a circumferential array, and the contact fingers 2 are fixed by a limiting plate; for convenience and practicality, the plum blossom contact 3 is usually assembled and connected with the contact arm 1.
[0015] From the above description, it can be seen that the measuring device 4 with a reducing section is sleeved on the static contact 6, and the dot matrix pressure sensors 5 respectively arranged on the reducing section and the annular section are used to obtain the insertion depth of the contact finger 2 on the plum blossom contact 3 and the static contact 6 and the pressure value of the meshing part, and the eccentricity between the plum blossom contact 3 and the static contact 6 is calculated based on the above data, that is, the test of the eccentricity value is assisted by measuring the insertion depth of the contact finger 2 on the plum blossom contact 3, providing more pressure change details, improving the measurement accuracy of the eccentricity value, and simplifying the test process.
[0016] In some embodiments, during the engagement process of the plum blossom contact 3 and the stationary contact 6, the dot matrix pressure sensor 5 of the reduced diameter section is used to obtain the starting position of the contact between the plum blossom contact 3 and the stationary contact 6, and the dot matrix pressure sensor 5 of the annular section is used to obtain the final position of the contact between the plum blossom contact 3 and the stationary contact 6.
[0017] From the above description, it can be seen that by distributing the dot matrix pressure sensors 5 in the reduced diameter section and the annular section, the entire process from the initial contact to the final contact between the plum blossom contact 3 and the static contact 6 can be accurately recorded, and the pressing depth of the plum blossom contact 3 can be statistically obtained based on the starting position and the final position, providing more dimensional test data, ensuring that the entire process of meshing is controllable, thereby improving the accuracy of the test.
[0018] In some embodiments, the measuring assembly further includes a fixing ring 8 , which is fixedly connected to the inside of the plum blossom contact 3 , and a slot is provided on a side of the fixing ring 8 facing the stationary contact 6 , and the slot is used to limit the stationary contact 6 .
[0019] As can be seen from the above description, by introducing the fixing ring 8 inside the plum blossom contact 3 and designing the limit slot, the displacement of the stationary contact 6 can be effectively limited, the alignment accuracy of the plum blossom contact 3 and the stationary contact 6 can be improved, and the stability and accuracy of the mechanical structure during the meshing process can be ensured, thereby reducing the measurement error. Preferably, the shape of the slot matches the shape of the stationary contact 6 and the end of the measuring device 4. When the stationary contact 6 with the measuring device 4 is engaged with the slot, it means that the plum blossom contact 3 and the stationary contact 6 are locked with each other.
[0020] In some embodiments, a guide slope 7 is provided at the end of the stationary contact 6, and the guide slope 7 matches the reduced diameter section.
[0021] From the above description, it can be seen that by setting the guiding bevel 7 at the end of the static contact 6 and matching it with the structure of the reduced diameter section, a clear guiding path can be provided when the plum blossom contact 3 is inserted, thereby reducing mechanical interference and friction during the insertion process and improving the smoothness and accuracy of the overall insertion operation.
[0022] Please refer to Figure 3A method for measuring the meshing eccentricity of a plum blossom contact 3 is applied to the measuring assembly of the meshing eccentricity of a plum blossom contact 3 and a stationary contact 6, and the measuring method comprises the steps of: S1, pressing the plum blossom contact 3 into the stationary contact 6, and using the dot matrix pressure sensor 5 to record the initial contact position between the plum blossom contact 3 and the stationary contact 6; S2, detecting the pressed-in state of the plum blossom contact 3, and when it is detected that the plum blossom contact 3 and the stationary contact 6 are locked with each other, obtaining the actual meshing pressure and final contact position of each contact finger 2 recorded by the dot matrix pressure sensor 5; S3. Calculate and obtain the eccentricity value between the plum blossom contact 3 and the stationary contact 6 based on the initial contact position, the final contact position and the actual meshing pressure.
[0023] From the above description, it can be seen that the dot matrix pressure sensor 5 is used to accurately record the starting contact position of the plum blossom contact 3 and the static contact 6. The starting point position and pressure value of the contact between the plum blossom contact 3 and the static contact 6 are used as test information. The starting position and initial pressure information after the mechanical collision are recorded. Combined with the final contact position after the two are locked and the actual meshing pressure, comprehensive and accurate data support is provided for the calculation of the eccentricity value to ensure the reliability of the measurement results.
[0024] In some embodiments, step S2 specifically includes the steps of: Detect the pressed-in state of the plum blossom contact 3. When it is detected that the plum blossom contact 3 and the stationary contact 6 are locked with each other, obtain the meshing pressure and final contact position recorded by the dot matrix pressure sensor 5, as well as the insertion depth of each contact finger 2 of the plum blossom contact 3 relative to the stationary contact 6.
[0025] From the above description, it can be seen that by accurately detecting the pressed state of the plum blossom contact 3, the insertion depth and engagement pressure information of each contact finger 2 can be obtained in real time, which helps to judge the effectiveness and stability of the contact, thereby improving the overall engagement quality and the accuracy of eccentricity detection.
[0026] In some implementations, step S3 specifically includes the steps of: Based on the initial contact position and the insertion depth, determining the contact effectiveness between each contact finger 2 of the plum blossom contact 3 and the stationary contact 6, and selecting the contact fingers 2 with effective contact; Obtaining the theoretical meshing pressure of each contact finger 2 when the plum blossom contact 3 and the stationary contact 6 are in a fully aligned state; The theoretical meshing pressure is used as a reference, and based on the final contact position and the actual meshing pressure, the radial offset between the contact finger 2 in the plum blossom contact 3 and the stationary contact 6 is calculated, and the eccentricity value is calculated according to the radial offset.
[0027] As can be seen from the above description, first of all, the information of the initial contact position and the insertion depth provides an accurate reference datum. In the process of the plum blossom contact 3 being inserted into the stationary contact 6, the initial contact position indicates the exact position where the plum blossom contact 3 and the stationary contact 6 first come into contact, which provides an initial reference point for the alignment of the entire engagement process. The information of the insertion depth reflects the depth difference of each contact finger 2 at the time of final engagement. These data help determine whether positional offset or mechanical error occurs during the insertion process. Therefore, by combining these two pieces of information, it is possible to accurately identify whether each contact finger 2 is in contact at the appropriate position, ensuring the effectiveness and stability of the contact.
[0028] Secondly, the theoretical meshing pressure is an important basis for ensuring the accuracy of the measurement as a comparison benchmark. The theoretical meshing pressure refers to the standard pressure value that each contact finger 2 should apply when the plum blossom contact 3 and the static contact 6 are completely aligned. By comparing the actual measured pressure with the theoretical pressure value, it can be determined whether there is eccentricity. If the actual pressure of a contact finger 2 deviates from the theoretical value, it can be analyzed whether there is radial offset.
[0029] Finally, through the comprehensive comparison of these data, the radial offset can be accurately calculated. The radial offset is a key indicator for evaluating the degree of eccentricity between the plum blossom contact 3 and the stationary contact 6. The calculation of the offset requires the difference between the actual pressure value and the theoretical value of each contact finger 2, and the specific offset value is obtained by mathematical methods. This calculation method improves the accuracy of eccentricity detection, making it possible to detect and correct inaccuracies in mechanical assembly earlier.
[0030] In some embodiments, step S3 further comprises the steps of: Based on the calculated radial offset, the engagement pressure distribution is adjusted by adjusting the relative position of the plum blossom contact 3 and the stationary contact 6 or the spring stiffness coefficient of the contact finger 2 until the pressure feedback of each contact finger 2 tends to be uniform.
[0031] It can be seen from the above description that by adjusting the positional relationship between the plum blossom contact 3 and the stationary contact 6 or the spring stiffness coefficient of the contact finger 2 based on the calculated radial offset, the pressure distribution of each contact finger 2 tends to be uniform, ensuring the stability and uniformity of the final contact, thereby optimizing the mechanical and electrical performance of the equipment.
[0032] In some embodiments, step S3 further includes step S4: Recording the eccentricity value and the corresponding actual meshing pressure as empirical data; When it is detected that the plum blossom contact 3 and the stationary contact 6 are eccentric, the plum blossom contact 3 and the stationary contact 6 are assisted in centering according to the empirical data.
[0033] From the above description, it can be seen that by recording the eccentricity value and the corresponding actual meshing pressure as empirical data, when eccentricity is detected between the plum blossom contact 3 and the static contact 6, adjustments and centering assistance can be made based on these data, which helps to improve the efficiency of assembly and the accuracy of centering, and ensure the reliability of long-term operation of the equipment.
[0034] The present invention provides a measuring device 4, assembly and method for the engagement eccentricity value of a plum blossom contact 3, which is mainly used to detect the eccentricity value when the plum blossom contact 3 is engaged with a stationary contact 6, and is specifically described below in conjunction with an embodiment.
[0035] Please refer to Figure 1 as well as Figure 2 , Embodiment 1 of the present invention is: A measuring device 4 for the engagement eccentricity value of a plum blossom contact 3 includes an annular segment, one end of the annular segment in the length direction is provided with a reduced diameter segment, and the circumferential outer surfaces of the annular segment and the reduced diameter segment are at least partially provided with annularly distributed dot matrix pressure sensors 5, and the dot matrix pressure sensors 5 are used to obtain the compressed position and the compressed pressure. The dot matrix pressure sensor 5 is arranged in the reduced diameter segment, on the one hand, to record the contact starting position of the plum blossom contact 3 and the static contact 6, and on the other hand, to provide more detailed pressure test data to avoid the test error caused by mechanical collision.
[0036] The above device cooperates with the plum blossom contact 3 and the stationary contact 6 to measure the eccentricity value. The measuring device 4 is sleeved on the outer surface of the stationary contact 6, the reduced diameter section is located at the end of the stationary contact 6, and the dot matrix pressure sensor 5 of the annular section is arranged in the meshing area of the plum blossom contact 3 and the stationary contact 6. The dot matrix pressure sensor 5 is used to obtain the meshing pressure between the plum blossom contact 3 and the stationary contact 6. The end of the stationary contact 6 is provided with a guide bevel 7, and the guide bevel 7 matches the reduced diameter section. The measuring device 4 with the reduced diameter section is sleeved on the stationary contact 6, and the dot matrix pressure sensors 5 respectively arranged on the reduced diameter section and the annular section are used to obtain the insertion depth of the contact finger 2 on the plum blossom contact 3 and the stationary contact 6 and the pressure value of the meshing part, and the eccentricity between the plum blossom contact 3 and the stationary contact 6 is calculated based on the above data, that is, the eccentricity test is assisted by measuring the insertion depth of the contact finger 2 on the plum blossom contact 3, providing more pressure change details, improving the measurement accuracy of the eccentricity value, and simplifying the test process.
[0037] Embodiment 2 of the present invention is: On the basis of the first embodiment, during the meshing process of the plum blossom contact 3 and the stationary contact 6, the dot matrix pressure sensor 5 of the reduced diameter section is used to obtain the starting position of the contact between the plum blossom contact 3 and the stationary contact 6, and the dot matrix pressure sensor 5 of the annular section is used to obtain the final position of the contact between the plum blossom contact 3 and the stationary contact 6. By distributing the dot matrix pressure sensors 5 of the reduced diameter section and the annular section, the entire process from the initial contact to the final contact between the plum blossom contact 3 and the stationary contact 6 can be accurately recorded, and the pressing depth of the plum blossom contact 3 can be statistically obtained based on the starting position and the final position, providing more dimensional test data, ensuring that the entire process of meshing is controllable, thereby improving the accuracy of the test.
[0038] The measuring assembly also includes a fixing ring 8, which is fixedly connected to the inside of the plum blossom contact 3. A slot is provided on the side of the fixing ring 8 facing the stationary contact 6, and the slot is used to limit the stationary contact 6. By introducing the fixing ring 8 into the inside of the plum blossom contact 3 and designing the limit slot, the deviation of the stationary contact 6 can be effectively limited, the alignment accuracy of the plum blossom contact 3 and the stationary contact 6 can be improved, and the stability and accuracy of the mechanical structure during the meshing process can be ensured, thereby reducing the measurement error.
[0039] Please refer to Figure 3 , Embodiment 3 of the present invention is: A method for measuring the meshing eccentricity value of a plum blossom contact 3 is applied to the measuring device 4 or the measuring assembly of the first or second embodiment, and the measuring method comprises the following steps: S1, pressing the plum blossom contact 3 into the stationary contact 6, and using the dot matrix pressure sensor 5 to record the initial contact position between the plum blossom contact 3 and the stationary contact 6; S2, detecting the pressed-in state of the plum blossom contact 3, and when it is detected that the plum blossom contact 3 and the stationary contact 6 are locked with each other, obtaining the actual meshing pressure and final contact position of each contact finger 2 recorded by the dot matrix pressure sensor 5; S3. Calculate and obtain the eccentricity value between the plum blossom contact 3 and the stationary contact 6 based on the initial contact position, the final contact position and the actual meshing pressure.
[0040] That is, in this embodiment, the dot matrix pressure sensor 5 is used to accurately record the starting contact position of the plum blossom contact 3 and the static contact 6. The starting point position and pressure value of the contact between the plum blossom contact 3 and the static contact 6 are used as test information. The starting position and initial pressure information after the mechanical collision are recorded. Combined with the final contact position after the two are locked and the actual meshing pressure, comprehensive and accurate data support is provided for the calculation of the eccentricity value to ensure the reliability of the measurement results.
[0041] Embodiment 4 of the present invention is: Based on the third embodiment, step S2 specifically includes the following steps: Detect the pressed-in state of the plum blossom contact 3. When the plum blossom contact 3 and the stationary contact 6 are locked with each other, obtain the meshing pressure and final contact position recorded by the dot matrix pressure sensor 5, as well as the insertion depth of each contact finger 2 of the plum blossom contact 3 relative to the stationary contact 6. By accurately detecting the pressed-in state of the plum blossom contact 3, the insertion depth and meshing pressure information of each contact finger 2 can be obtained in real time, which helps to judge the effectiveness and stability of the contact, thereby improving the overall meshing quality and the accuracy of eccentricity detection.
[0042] Step S3 specifically includes the following steps: Based on the initial contact position and the insertion depth, the contact effectiveness between each contact finger 2 of the plum blossom contact 3 and the stationary contact 6 is judged, and the contact fingers 2 with effective contact are screened out; Obtaining the theoretical meshing pressure of each contact finger 2 when the plum contact 3 and the stationary contact 6 are fully aligned; The radial offset between the contact finger 2 and the stationary contact 6 in the plum blossom contact 3 is calculated based on the theoretical meshing pressure and the final contact position and the actual meshing pressure, and the eccentricity value is calculated according to the radial offset.
[0043] Specifically, the calculation method can be performed by the following formula: (Theoretical meshing pressure - actual meshing pressure) / plum blossom contact 3 spring stiffness coefficient = radial offset; In addition, step S3 also includes the steps of: Based on the calculated radial offset, the relative position of the plum blossom contact 3 and the stationary contact 6 or the spring stiffness coefficient of the contact finger 2 is adjusted to adjust the engagement pressure distribution until the pressure feedback of each contact finger 2 tends to be uniform. By adjusting the positional relationship between the plum blossom contact 3 and the stationary contact 6 or the spring stiffness coefficient of the contact finger 2 based on the calculated radial offset, the pressure distribution of each contact finger 2 tends to be uniform, ensuring the stability and uniformity of the final contact, thereby optimizing the mechanical and electrical performance of the device.
[0044] Embodiment 5 of the present invention is: Based on the third or fourth embodiment, step S3 further includes step S4: Record the eccentricity value and the corresponding actual meshing pressure as empirical data; When the eccentricity of the plum blossom contact 3 and the stationary contact 6 is detected, the plum blossom contact 3 and the stationary contact 6 are assisted in centering according to the empirical data. That is, the pressure distribution of each contact point under different centering conditions is calculated according to the above steps. The centering degree of the plum blossom contact 3 and the stationary contact 6 is manually adjusted, and the pressure value under different offset values is recorded. The offset value of the plum blossom contact 3 and the stationary contact 6 can be fed back through the pressure value later, so that the plum blossom contact 3 and the stationary contact 6 can be quickly and correctly positioned according to the above empirical value during operation, thereby speeding up the tooling process.
[0045] In summary, the present invention provides a device, assembly and method for measuring the eccentricity value of the engagement of a plum blossom contact. By designing a special measuring device including an annular segment and a reduced diameter segment, the circularly distributed dot matrix pressure sensors can obtain subtle changes in contact pressure in all directions, ensuring that the pressure of each contact point during the engagement process is accurately monitored and recorded. In actual operation, the measuring device is tightly mounted on the outside of the static contact, and the initial contact position can be clearly identified through the pressure detection of the reduced diameter segment. At the same time, the sensor of the annular segment covers the entire engagement area and can track the entire process from insertion to full engagement. Such a segmented detection design allows the plum blossom contact to have a clear guide path during the insertion process, which helps to reduce assembly errors and mechanical deviations.
[0046] In addition, the design of the fixing ring and the slot further improves the accuracy of mechanical positioning and reduces the instability during assembly. With the help of the guide bevel, the insertion of the plum blossom contact is smoother and more accurate, which improves the stability of the mechanical connection and the assembly efficiency. Through a systematic measurement method, including starting position recording, real-time pressure detection and insertion depth analysis, the contact effectiveness of each contact finger can be judged, and the radial offset of each contact finger can be accurately calculated based on the theoretical meshing pressure, thereby obtaining an accurate eccentricity value.
[0047] This system not only greatly improves the detection accuracy, but also can realize automatic adjustment and compensation. By adjusting the relative position of the plum blossom contact and the static contact or the spring stiffness of the contact finger, the contact pressure is evenly distributed, thereby effectively reducing the negative impact of mechanical eccentricity on electrical performance. At the same time, the system can also provide a reference basis for future assembly and alignment by recording the eccentricity value and the actual meshing pressure as empirical data, ensuring the stability and reliability of the equipment in long-term operation. Ultimately, the present invention realizes more efficient and accurate meshing detection and adjustment of the plum blossom contact and the static contact, providing a new technical solution for the safety, durability and performance improvement of complex electrical equipment.
[0048] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A device for measuring the eccentricity of engagement of plum blossom contacts, characterized in that: It comprises an annular segment, one end of which in the length direction is provided with a reduced diameter segment, and the circumferential outer surfaces of the annular segment and the reduced diameter segment are at least partially provided with annularly distributed dot matrix pressure sensors, which are used to obtain the compressed position and the compressed pressure.
2. A measuring assembly for the engagement eccentricity value of a plum blossom contact, characterized in that: It comprises a plum blossom contact and a stationary contact that match each other and the measuring device as claimed in claim 1, wherein the measuring device is sleeved on the outer surface of the stationary contact, the reduced diameter section is located at the end of the stationary contact, and the dot matrix pressure sensor of the annular section is arranged in the meshing area of the plum blossom contact and the stationary contact, and the dot matrix pressure sensor is used to obtain the meshing pressure between the plum blossom contact and the stationary contact.
3. The measuring assembly of the engagement eccentricity value of a plum blossom contact according to claim 2, characterized in that: During the meshing process of the plum blossom contact and the stationary contact, the lattice pressure sensor of the reduced diameter section is used to obtain the starting position of the contact between the plum blossom contact and the stationary contact, and the lattice pressure sensor of the annular section is used to obtain the final position of the contact between the plum blossom contact and the stationary contact.
4. The measuring assembly of the engagement eccentricity value of the plum blossom contact according to claim 3 is characterized in that: The measuring assembly also includes a fixing ring, which is fixedly connected to the inside of the plum blossom contact. A slot is provided on a side of the fixing ring facing the stationary contact, and the slot is used to limit the stationary contact.
5. The measuring assembly of the engagement eccentricity value of a plum blossom contact according to claim 2, characterized in that: A guiding slope is provided at the end of the stationary contact, and the guiding slope matches the reduced diameter section.
6. A method for measuring the engagement eccentricity value of a plum blossom contact, characterized in that: A measuring assembly for measuring the eccentricity value of engagement between a plum blossom contact and a stationary contact as described in any one of claims 2 to 5, wherein the measuring method comprises the steps of: S1, pressing the plum blossom contact into the stationary contact, and using the dot matrix pressure sensor to record the initial contact position between the plum blossom contact and the stationary contact; S2, detecting the pressed-in state of the plum blossom contact, and when it is detected that the plum blossom contact and the stationary contact are locked with each other, obtaining the actual meshing pressure and final contact position of each contact finger recorded by the dot matrix pressure sensor; S3. Calculate and obtain the eccentricity value between the plum blossom contact and the stationary contact based on the initial contact position, the final contact position and the actual meshing pressure.
7. A method for measuring the engagement eccentricity value of a plum blossom contact according to claim 6, characterized in that: The step S2 specifically includes the following steps: Detect the pressed-in state of the plum blossom contact, and when it is detected that the plum blossom contact and the stationary contact are locked with each other, obtain the meshing pressure and final contact position recorded by the dot matrix pressure sensor, as well as the insertion depth of each contact finger of the plum blossom contact relative to the stationary contact.
8. The method for measuring the engagement eccentricity value of a plum blossom contact according to claim 7, characterized in that: The step S3 specifically comprises the following steps: Based on the initial contact position and the insertion depth, determining the contact effectiveness between each contact finger of the plum blossom contact and the stationary contact, and selecting the contact fingers with effective contact; Obtaining the theoretical meshing pressure of each contact finger when the plum blossom contact and the stationary contact are fully aligned; The theoretical meshing pressure is used as a reference, and based on the final contact position and the actual meshing pressure, the radial offset between the contact fingers in the plum blossom contact and the stationary contact is calculated, and the eccentricity value is calculated according to the radial offset.
9. A method for measuring the engagement eccentricity value of a plum blossom contact according to claim 8, characterized in that: The step S3 further comprises the steps of: Based on the calculated radial offset, the engagement pressure distribution is adjusted by adjusting the relative position of the plum blossom contact and the stationary contact or the spring stiffness coefficient of the contact finger until the pressure feedback of each contact finger tends to be uniform.
10. A method for measuring the engagement eccentricity value of a plum blossom contact according to any one of claims 6 to 9, characterized in that: The step S3 further includes a step S4: Recording the eccentricity value and the corresponding actual meshing pressure as empirical data; When it is detected that the plum blossom contact and the stationary contact are eccentric, the plum blossom contact and the stationary contact are assisted in centering according to the empirical data.