Device, method and system for measuring angle of connecting arm of circuit breaker main shaft

Abstract

The present invention provides a connecting arm angle measuring device, method and system for a circuit breaker main shaft, wherein the connecting arm angle measuring device for the circuit breaker main shaft comprises: a rotating shaft, which is rotatably arranged on a signal processing device; a rotating member, which is connected to the rotating shaft and rotates with the rotation of the rotating shaft; a telescopic connecting rod connected to the rotating member, which is telescopic along its extension direction, and one end of the telescopic connecting rod has an opening, wherein a transmitting end of a ranging sensor is fixed to one side of the opening, and a receiving end corresponding to the transmitting end of the ranging sensor is fixed to the other side opposite to the one side; and a signal processing device. The present invention can greatly improve the efficiency of the connecting arm angle measuring mechanism of the circuit breaker main shaft. The present invention makes up for the defects of the main components of the circuit breaker, and the present invention is particularly suitable for medium and high voltage circuit breaker products.

Description

Technical Field

[0001] The present invention relates to the field of circuit breakers, and in particular to a device, method and system for measuring the angle of a connecting arm of a main shaft of a circuit breaker. Background Art

[0002] Circuit breakers are important electrical equipment in switch cabinets, used to disconnect and connect load circuits, as well as disconnect fault circuits. The size of circuit breakers ranges from low voltage applications (tens of amperes) to high voltage applications (tens of thousands of amperes).

[0003] Among them, the shaft is an important component for controlling the movement of the moving and static contacts of the circuit breaker. The main shaft of the circuit breaker and other components are connected together by connecting arms. There are many connecting arms on the shaft of a circuit breaker, and each connecting arm has a connecting hole. The relevant angles of the connecting arms of all circuit breakers are fixed. If a connecting arm is configured at a wrong angle, the shaft cannot be installed smoothly in the circuit breaker. Therefore, it is very important to detect the angle of the circuit breaker connecting arm easily, accurately and quickly after the shaft is produced.

[0004] Currently, the above problem has not been solved. Usually, after the shaft of the circuit breaker is produced, the angles of all the connecting arms on the shaft of the circuit breaker are measured manually with a vernier caliper, and it takes about two hours to manually measure all the connecting arms of each shaft.

[0005] Therefore, the industry needs a mechanism for simply, quickly and accurately testing the angle of the connecting arm of the circuit breaker main shaft. Summary of the invention

[0006] A first aspect of the present invention provides a connecting arm angle measuring device for a circuit breaker main shaft, wherein the connecting arm angle measuring device for the circuit breaker main shaft comprises: a rotating shaft, which is rotatably arranged on a signal processing device; a rotating member, which is connected to the rotating shaft and rotates with the rotation of the rotating shaft; a telescopic connecting rod connected to the rotating member, which is telescopic along its extension direction, and one end of the telescopic connecting rod has an opening, wherein a transmitting end of a distance measuring sensor is fixed to one side of the opening, and a receiving end corresponding to the transmitting end of the distance measuring sensor is fixed to the other side opposite to the one side, wherein the transmitting end and the receiving end record the movement of the rotating member and the telescopic connecting rod; a signal processing device, which records the movement angles of the rotating shaft, the telescopic connecting rod, the transmitting end and the receiving end, and the voltage values ​​and their time of the transmitting end and the receiving end.

[0007] Furthermore, a plurality of connecting arms are sleeved on the main shaft of the circuit breaker, and the angles between the plurality of connecting arms and the main shaft are different, wherein each of the connecting arms has at least one connecting hole.

[0008] Furthermore, the distance measuring sensor is a photoelectric sensor.

[0009] Furthermore, the photoelectric sensor is a laser sensor.

[0010] The second aspect of the present invention provides a method for measuring the angle of a connecting arm of a circuit breaker main shaft, which utilizes the connecting arm angle measuring device of the circuit breaker main shaft described in the first aspect of the present invention, and includes the following steps: placing the connecting arm of the circuit breaker main shaft to be tested and the connecting arm angle measuring device of the circuit breaker main shaft relative to each other, so that the connecting arm and the opening are parallel to each other; rotating the rotating member with the rotating shaft as the axis to drive the retractable connecting rod and its opening, so that the transmitting end and the receiving end on the opening sweep across the connecting hole to be tested, when the transmitting end or the receiving end sweeps across the connecting hole and is not conductive, the voltage value is 0, and when the transmitting end and the receiving end sweep across the connecting arm, the voltage value is not 0; and calculating the angle of each connecting arm and the circuit breaker main shaft based on the above voltage value and its corresponding time.

[0011] Furthermore, the method for measuring the angle of the connecting arm of the main shaft of the circuit breaker also includes the following steps: applying a pulse signal to the photoelectric sensor, decoding the photoelectric sensor signal, and counting the voltage value and its corresponding time.

[0012] Furthermore, the method for measuring the angle of the connecting arm of the main shaft of the circuit breaker further comprises the following steps: selecting a first center point of one of the cross sections of the main shaft of the circuit breaker, wherein the distance from the first center point to the second center point of the rotating member is m, and the angle between the connecting arm and the main shaft of the circuit breaker is:

[0013]

[0014] Wherein, h is the vertical line from the third center point of the connecting hole to the distance m, h=n sinθ 2 ; n is the distance from the third center point to the second center point; θ 2 is the angle between n and m, θ 1 is the angle between the connection point of the connection hole and h and the second center point.

[0015] The third aspect of the present invention provides a connecting arm angle measurement system for a circuit breaker main shaft, wherein the connecting arm angle measurement method for the circuit breaker main shaft utilizes the connecting arm angle measurement device for the circuit breaker main shaft described in the first aspect of the present invention, wherein the connecting arm angle measurement system for the circuit breaker main shaft comprises: a placing device, which places the connecting arm of the circuit breaker main shaft to be tested and the connecting arm angle measurement device for the circuit breaker main shaft relative to each other, so that the connecting arm and the opening are parallel to each other; a rotating device, which rotates the rotating member with the rotating shaft as the axis to drive the retractable connecting rod and its opening, so that the transmitting end and the receiving end on the opening sweep across the connecting hole to be tested, when the transmitting end or the receiving end sweeps across the connecting hole and is not conductive, the voltage value is 0, and when the transmitting end and the receiving end sweep across the connecting arm, the voltage value is not 0; a calculating device, which calculates the angle of each connecting arm and the circuit breaker main shaft based on the above voltage value and its corresponding time.

[0016] Furthermore, it also includes: a processing device, which applies a pulse signal to the photoelectric sensor, decodes the photoelectric sensor signal, and counts the voltage value and its corresponding time.

[0017] The method for measuring the angle of the connecting arm of the main shaft of a circuit breaker further includes: a selection device, which selects a first center point of one of the cross sections of the main shaft of the circuit breaker, wherein the distance from the first center point to the second center point of the rotating member is m, and the angle between the connecting arm and the main shaft of the circuit breaker is:

[0018]

[0019] Wherein, h is the vertical line from the third center point of the connecting hole to the distance m, h = n sin θ 2 ; n is the distance from the third center point to the second center point; θ 2 is the angle between n and m, θ 1 is the angle between the connection point of the connection hole and h and the second center point.

[0020] The present invention can greatly improve the efficiency of the angle measurement mechanism of the connecting arm of the main shaft of the circuit breaker and realize intelligent testing and design. In addition, the present invention makes up for the defects of the main components of the circuit breaker, and is particularly suitable for medium and high voltage circuit breaker products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the circuit breaker main shaft and its connecting arm;

[0022] Figure 2 is a schematic structural diagram of a device for measuring the angle of a circuit breaker main shaft and its connecting arm according to a specific embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the positions of a device for measuring the angles of a circuit breaker main shaft and its connecting arm according to a specific embodiment of the present invention;

[0024] Figure 4 is a diagram of corresponding voltages at the transmitting end and the receiving end of a distance measuring sensor of a device for measuring the angle of a main shaft of a circuit breaker and its connecting arm according to a specific embodiment of the present invention;

[0025] Figure 5 The invention is a schematic diagram of angle calculation of a device for measuring the angles of a main shaft of a circuit breaker and its connecting arm according to a specific embodiment of the invention. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0027] The present invention provides a connection arm angle measurement mechanism for a circuit breaker main shaft, wherein the present invention is more accurate, convenient and low-cost.

[0028] Figure 1 It is a schematic diagram of the structure of the circuit breaker main shaft and its connecting arm. Figure 1 As shown, the main shaft 200 of the circuit breaker is an important part of the circuit breaker, and a plurality of connecting arms are sleeved thereon, namely connecting arm 210, connecting arm 220, connecting arm 230, connecting arm 240, connecting arm 250, connecting arm 260, connecting arm 270, connecting arm 280, and connecting arm 290. The angles between the connecting arms 210, 220, 230, 240, 250, 260, 270, 280, and 290 and the main shaft 200 are different. The connecting arms each have at least one connecting hole. Specifically, the connecting arm 210 has a connecting hole 210a, the connecting arm 220 has connecting holes 220a and 220b, the connecting arm 230 has a connecting hole 230a, the connecting arm 250 has connecting holes 250a, 250b and 250c, the connecting arm 260 has a connecting hole 260a, the connecting arm 270 has a connecting hole 270a, the connecting arm 280 has a connecting hole 280a, and the connecting arm 290 has a connecting hole 290a.

[0029] A first aspect of the present invention provides a device for measuring the angle of a connecting arm of a main shaft of a circuit breaker. Figure 21 is a schematic diagram of a circuit breaker main shaft and its connecting arm angle measuring device according to a specific embodiment of the present invention, wherein the circuit breaker main shaft connecting arm angle measuring device 100 comprises a signal processing device 110, a rotating shaft 120, a rotating member 130 and a retractable connecting rod 140. Specifically, the rotating shaft 120 is rotatably disposed on the signal processing device 110. The rotating member 130 is connected to the rotating shaft 120 and rotates with the rotation of the rotating shaft 120. The retractable connecting rod 140 is connected to the rotating member 130, and the retractable connecting rod 140 is retractable along its extension direction, that is, the extension direction is as shown by the arrow S in 3. 1 direction. Therefore, in order to match different connecting arms and the centers of the connecting holes thereon, the length of the telescopic connecting rod 140 can be adjusted. One end of the telescopic connecting rod 140 has an opening 140a, wherein a transmitting end 150a of a distance measuring sensor is fixed on one side of the opening 140a, and a receiving end 150b corresponding to the transmitting end of the distance measuring sensor is fixed on the other side opposite to the one side. The signal processing device 110 records the movement angles of the rotating shaft 120, the telescopic connecting rod 140, the transmitting end 150a and the receiving end 150b, as well as the voltage values ​​of the transmitting end 150a and the receiving end 150b and their time. The transmitting end 150a and the receiving end 150b record the movement of the rotating member (130) and the telescopic connecting rod (140).

[0030] Furthermore, the distance measuring sensor is a photoelectric sensor. Preferably, the photoelectric sensor is a laser sensor.

[0031] The second aspect of the present invention provides a method for measuring the angle of a connecting arm of a circuit breaker main shaft, which utilizes the method for measuring the angle of a connecting arm of a circuit breaker main shaft described in the first aspect of the present invention and utilizes the device for measuring the angle of a connecting arm of a circuit breaker main shaft described in the first aspect of the present invention. Exemplarily, the method is described below by taking the angle of the connecting arm 210 and the main shaft 200 as an example.

[0032] First, step S1 is performed to place the connecting arm 210 of the circuit breaker main shaft 200 to be tested and the connecting arm angle measuring device 100 of the circuit breaker main shaft opposite to each other, so that the connecting arm 210 to be tested and the opening 140a are parallel to each other. Figure 3 is a schematic diagram of the position of a device for measuring the angle of a circuit breaker main shaft and its connecting arm according to a specific embodiment of the present invention. Figure 3 As shown, the spindle 200 to be tested is placed on a table A, and the connecting arm angle measuring device 100 of the circuit breaker spindle is placed on a platform B. Preferably, the connecting arm of the spindle 200 to be tested and the connecting arm angle measuring device 100 of the circuit breaker spindle are placed relatively parallel. The connecting arm angle measuring device 100 of the circuit breaker spindle can be moved along the arrow S 3direction of movement.

[0033] Preferably, the angles of one connecting arm and the main shaft are tested each time. For example, in this embodiment, Figure 1 The angles of the connecting arm 210 , the connecting arm 220 , the connecting arm 230 , the connecting arm 240 , the connecting arm 250 , the connecting arm 260 , the connecting arm 270 , the connecting arm 280 , and the connecting arm 290 respectively shown in FIG.

[0034] Then, step S2 is performed, wherein the rotating member 130 is rotated with the rotating shaft 120 as the axis to drive the retractable connecting rod 140 and its opening 140a, so that the transmitting end 150a and the receiving end 150b on the opening 140a sweep across the connection hole to be tested. When the transmitting end 150a or the receiving end 150b sweeps across the connection hole, the voltage value is 0 if there is no conduction. When the transmitting end 150a and the receiving end 150b sweep across the connection arm 210, the voltage value is not 0.

[0035] Specifically, Figure 4 As shown, the horizontal axis is time and the vertical axis is voltage. In the time range from t1 to t2, when the transmitting end 150a and the receiving end 150b sweep across the metal part of the connecting arm 210 for the first time, the voltage V=V1. Then, in the time range from t2 to t3, when the transmitting end 150a or the receiving end 150b of the distance measuring sensor is not conducting when connecting the hole 210a, the voltage V=0. Then, in the time range from t3 to t4, when the transmitting end 150a and the receiving end 150b sweep across the metal part of the connecting arm 210 for the second time, the voltage V=V1.

[0036] Finally, step S3 is performed to calculate the angle between each of the connecting arms 210 and the circuit breaker main shaft 200 based on the voltage value and its corresponding time.

[0037] Preferably, the method for measuring the angle of the connecting arm of the main shaft of the circuit breaker further comprises the following steps: applying a pulse signal to the photoelectric sensor, decoding the photoelectric sensor signal, and counting the voltage value and its corresponding time.

[0038] Figure 5 The invention is a schematic diagram of angle calculation of a device for measuring the angle of a main shaft of a circuit breaker and its connecting arm according to a specific embodiment of the present invention. The connecting arm angle measurement method of the main shaft of a circuit breaker also includes the following steps: selecting a first center point O of one of the cross sections of the main shaft of the circuit breaker (200); 1 , wherein the first center point O 1 To the second center point O of the rotating member (130) 2 The distance is m, so if Figure 5The angles of the connecting arms (210, 220, 230, 240, 250, 260, 270, 280, 290) and the circuit breaker main axis (200) are as follows:

[0039]

[0040] Wherein, h is the third center point O of the connecting holes (210a, 220a, 220b, 230a, 250a, 250b, 250c, 260a, 270a, 280a, 290a) 3 To the perpendicular line at the distance m, h = n sinθ 2 , n is the third center point O 3 To the second center point O 2 The distance θ 2 is the angle between n and m, θ 1 The connecting point of the connecting holes (210a, 220a, 220b, 230a, 250a, 250b, 250c, 260a, 270a, 280a, 290a) and h to the second center point O 2 The angle between the third center point O 3 To the second center point O 2 distance.

[0041] The third aspect of the present invention provides a connecting arm angle measurement system for a circuit breaker main shaft, wherein the connecting arm angle measurement method for the circuit breaker main shaft utilizes the connecting arm angle measurement device for the circuit breaker main shaft described in the first aspect of the present invention, wherein the connecting arm angle measurement system for the circuit breaker main shaft comprises: a placing device, which places the connecting arm of the circuit breaker main shaft to be tested and the connecting arm angle measurement device for the circuit breaker main shaft relative to each other, so that the connecting arm and the opening are parallel to each other; a rotating device, which rotates the rotating member with the rotating shaft as the axis to drive the retractable connecting rod and its opening, so that the transmitting end and the receiving end on the opening sweep across the connecting hole to be tested, when the transmitting end or the receiving end sweeps across the connecting hole and is not conductive, the voltage value is 0, and when the transmitting end and the receiving end sweep across the connecting arm, the voltage value is not 0; a calculating device, which calculates the angle of each connecting arm and the circuit breaker main shaft based on the above voltage value and its corresponding time.

[0042] Furthermore, it also includes: a processing device, which applies a pulse signal to the photoelectric sensor, decodes the photoelectric sensor signal, and counts the voltage value and its corresponding time.

[0043] The third aspect of the present invention is a connecting arm angle measurement system for a circuit breaker main shaft, which further includes: a selection device, which selects a first center point of one of the cross sections of the circuit breaker main shaft, wherein the distance from the first center point to the second center point of the rotating member is m, and the angle between the connecting arm and the circuit breaker main shaft is:

[0044]

[0045] Wherein, h is the vertical line from the third center point of the connecting hole to the distance m, h=nsinθ 2 ; n is the distance from the third center point to the second center point; θ 2 is the angle between n and m, θ 1 is the angle between the connection point of the connection hole and h and the second center point.

[0046] The present invention can greatly improve the efficiency of the angle measurement mechanism of the connecting arm of the main shaft of the circuit breaker and realize intelligent testing and design. In addition, the present invention makes up for the defects of the main components of the circuit breaker, and is particularly suitable for medium and high voltage circuit breaker products.

[0047] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be regarded as limiting the present invention. After reading the above content, various modifications and substitutions of the present invention will be obvious to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the attached claims. In addition, any figure mark in the claims should not be regarded as limiting the claims involved; the word "comprising" does not exclude devices or steps not listed in other claims or the specification; words such as "first" and "second" are only used to indicate names, and do not indicate any specific order.

Claims

1. A device for measuring the angle of the connecting arm of the main shaft of a circuit breaker, wherein: The connecting arm angle measuring device (100) of the circuit breaker main shaft comprises: A rotating shaft (120) rotatably disposed on the signal processing device (110); a rotating member (130) connected to the rotating shaft (120) and rotating along with the rotation of the rotating shaft (120); A telescopic connecting rod (140) connected to the rotating member (130), which is telescopic along its extension direction, and one end of the telescopic connecting rod (140) has an opening (140a), wherein a transmitting end (150a) of a distance measuring sensor is fixed on one side of the opening (140a), and a receiving end (150b) corresponding to the transmitting end of the distance measuring sensor is fixed on the other side opposite to the one side, wherein the transmitting end (150a) and the receiving end (150b) record the movement of the rotating member (130) and the telescopic connecting rod (140); A signal processing device (110) records the movement angles of the rotating shaft (120), the telescopic connecting rod (140), the transmitting end (150a) and the receiving end (150b), and the voltage values ​​of the transmitting end (150a) and the receiving end (150b) and their time; The method for measuring the angle of the connecting arm of the main shaft of a circuit breaker utilizes the connecting arm angle measuring device (100) of the main shaft of a circuit breaker, and comprises the following steps: Placing the connecting arm of the circuit breaker main shaft (200) to be tested and the connecting arm angle measuring device (100) of the circuit breaker main shaft opposite to each other, so that the connecting arm and the opening (140a) are parallel to each other; The rotating member (130) is rotated with the rotating shaft (120) as the axis to drive the telescopic connecting rod (140) and the opening (140a) thereof, so that the transmitting end (150a) and the receiving end (150b) on the opening (140a) sweep across the connection hole to be tested, when the transmitting end (150a) or the receiving end (150b) sweeps across the connection hole without conduction, the voltage value is 0, and when the transmitting end (150a) and the receiving end (150b) sweep across the connection arm, the voltage value is not 0; The angle between each of the connecting arms and the main axis (200) of the circuit breaker is calculated based on the voltage value and its corresponding time.

2. The connecting arm angle measuring device of the circuit breaker main shaft according to claim 1, characterized in that: A plurality of connecting arms are sleeved on the circuit breaker main shaft (200), and the angles between the plurality of connecting arms and the circuit breaker main shaft (200) are different, wherein each of the connecting arms has at least one connecting hole.

3. The connecting arm angle measuring device of the circuit breaker main shaft according to claim 1, characterized in that: The distance measuring sensor is a photoelectric sensor.

4. The device for measuring the angle of the connecting arm of the main shaft of a circuit breaker according to claim 3, characterized in that: The photoelectric sensor is a laser sensor.

5. A method for measuring the angle of the connecting arm of a circuit breaker main shaft, characterized in that: The connecting arm angle measurement method of the circuit breaker main shaft utilizes the connecting arm angle measurement device (100) of the circuit breaker main shaft as described in claim 3, which includes the following steps: The connecting arm angle measurement method of the circuit breaker main shaft also includes the following steps: applying a pulse signal to the photoelectric sensor, decoding the photoelectric sensor signal, and counting the voltage value and its corresponding time.

6. The method for measuring the angle of the connecting arm of the main shaft of a circuit breaker according to claim 5, characterized in that: The method for measuring the angle of the connecting arm of the circuit breaker main shaft also includes the following steps: Select a first center point of one of the cross sections of the circuit breaker main shaft (200), wherein the distance from the first center point to the second center point of the rotating member (130) is m, then the angle between the connecting arm and the circuit breaker main shaft (200) is: Wherein, h is the vertical line from the third center point of the connecting hole to the distance m, h=n sin θ2; n is the distance from the third center point to the second center point; θ2 is the angle between n and m, θ1 is the angle between the connection point of the connection hole and h and the second center point.

7. The connecting arm angle measurement system of the circuit breaker main shaft is characterized by: The connecting arm angle measurement method of the circuit breaker main shaft utilizes the connecting arm angle measurement device (100) of the circuit breaker main shaft according to any one of claims 1 to 4, wherein the connecting arm angle measurement system of the circuit breaker main shaft comprises: A placement device, which places the connection arm of the circuit breaker main shaft (200) and the connection arm angle measuring device (100) of the circuit breaker main shaft relative to each other so that the connection arm and the opening (140a) are parallel to each other; A rotating device, which rotates the rotating member (130) with the rotating shaft (120) as the axis to drive the telescopic connecting rod (140) and its opening (140a), so that the transmitting end (150a) and the receiving end (150b) on the opening (140a) sweep across the connection hole to be tested, when the transmitting end (150a) or the receiving end (150b) sweeps across the connection hole without conduction, the voltage value is 0, and when the transmitting end (150a) and the receiving end (150b) sweep across the connection arm, the voltage value is not 0; A calculation device is provided for calculating the angle between each of the connecting arms and the main axis (200) of the circuit breaker based on the voltage value and its corresponding time.

8. The connecting arm angle measurement system of the circuit breaker main shaft according to claim 7, characterized in that: The distance measuring sensor is a photoelectric sensor; It also includes: A processing device applies a pulse signal to the photoelectric sensor, decodes the photoelectric sensor signal, and counts the voltage value and its corresponding time.

9. The connecting arm angle measurement system of the circuit breaker main shaft according to claim 7, characterized in that: It also includes: A selection device, which selects a first center point of one of the cross sections of the circuit breaker main shaft (200), wherein the distance from the first center point to the second center point of the rotating member (130) is m, and the angle between the connecting arm and the circuit breaker main shaft (200) is: Wherein, h is the vertical line from the third center point of the connecting hole to the distance m, h=n sin θ2; n is the distance from the third center point to the second center point; θ2 is the angle between n and m, θ1 is the angle between the connection point of the connection hole and h and the second center point.

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