A detection device

Abstract

The application relates to a detection device, which comprises a detection mechanism, a first driving mechanism and a mechanical arm, the detection mechanism comprises a generator and a detection probe electrically connected with the generator; the first driving mechanism comprises an output shaft and a constant-speed control module electrically connected with the output shaft, the output shaft is connected with the generator and used for outputting torque to the generator, and the constant-speed control module is used for adjusting the input voltage of the first driving mechanism in real time according to the rotating speed of the output shaft; the mechanical arm comprises a base and a first connecting rod movably connected with the base, and the detection probe is installed on the first connecting rod. The detection device provided by the application can drive the first connecting rod to move relative to the base by driving the first connecting rod, so that the detection probe on the first connecting rod is close to a position to be detected, the operator does not need to operate in close distance, the risk of electric shock of the operator is reduced, and the safety of the detection device is improved.

Description

Technical Field

[0001] This application relates to the field of power measurement and control technology, and in particular to a detection device. Background Technology

[0002] In troubleshooting conductor wire faults, using a mechanical megohmmeter to determine the insulation performance of the line is a common method.

[0003] However, traditional testing methods have many drawbacks. For example, when manually operating a mechanical megohmmeter, it is difficult to maintain a standard rotation speed precisely, affecting measurement accuracy. Furthermore, when the circuit under test is faulty, close-range manual operation poses a risk of electric shock, especially in special circumstances such as lightning strikes. Utility Model Content

[0004] Therefore, it is necessary to provide a detection device with high measurement accuracy to address the aforementioned technical problems.

[0005] This application provides a detection device, including a detection mechanism, a first drive mechanism, and a robotic arm. The detection mechanism includes a generator and a detection probe electrically connected to the generator. The first drive mechanism includes an output shaft and a constant speed control module electrically connected to the output shaft. The output shaft is connected to the generator to output torque to the generator, and the constant speed control module is used to adjust the input voltage of the first drive mechanism in real time according to the rotational speed of the output shaft. The robotic arm includes a base and a first connecting rod movably connected to the base, and the detection probe is mounted on the first connecting rod.

[0006] In one embodiment, the base includes a seat body and a receiving cavity extending along a first direction, the receiving cavity having an opening on one side of the first direction; a first connecting rod extends along the first direction, at least a portion of the first connecting rod being located within the receiving cavity.

[0007] In one embodiment, the robotic arm further includes a second drive mechanism connected to the first link, the second drive mechanism being used to drive the first link to move relative to the base in a first direction.

[0008] In one embodiment, the second drive mechanism is provided with a wireless receiving module.

[0009] In one embodiment, it further includes a height adjustment mechanism, comprising a base and a second link movably connected to the base, the second link extending in the height direction, and a base mounted on the side of the second link away from the base, the height direction being intersected with the first direction.

[0010] In one embodiment, it further includes: an angle adjustment mechanism, including a rotating shaft and a bushing sleeved on the rotating shaft, the rotating shaft and the bushing being rotatably connected, one of the rotating shaft and the bushing being disposed on a second connecting rod and the other being disposed on a base, the second connecting rod and the base being rotatably connected by the angle adjustment mechanism.

[0011] In one embodiment, the constant speed control module includes a speed monitoring unit for monitoring the speed of the output shaft.

[0012] In one embodiment, the rated speed of the output shaft is 120 revolutions per minute.

[0013] In one embodiment, a beam emitter is mounted on the end of the first link that is away from the base.

[0014] In one embodiment, the generator and the first drive mechanism are mounted on the base; the detection mechanism also includes connecting wires connecting the generator and the detection probe.

[0015] The detection device provided in this application, by setting the first drive mechanism to output torque from the generator in the detection mechanism, and the first drive mechanism including a constant speed control module, can improve the speed stability of the output shaft and thus improve the measurement accuracy of the detection device by adjusting the input voltage of the first drive mechanism in real time according to the speed of the output shaft. By setting a robotic arm, which includes a base and a first link movably connected to the base, the user can drive the first link to move relative to the base, thereby moving the detection probe on the first link closer to the position to be detected. This eliminates the need for close-range operation by the operator, reducing the risk of electric shock and improving the safety of the detection device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a robotic arm is provided.

[0018] Figure 2 This is a schematic diagram of the structure of the first drive mechanism in one embodiment.

[0019] Figure 3 This is a schematic diagram of the structure of a robotic arm, a height adjustment mechanism, and an angle adjustment mechanism according to one embodiment.

[0020] Explanation of reference numerals in the attached figures:

[0021] 10. Detection device; 11. Detection probe;

[0022] 100. First drive mechanism; 110. Output shaft;

[0023] 200. Robotic arm; 210. Base; 220. First link; 221. Beam emitter;

[0024] 300. Height adjustment mechanism; 310. Base; 320. Second connecting rod;

[0025] 400. Angle adjustment mechanism; 410. Rotating shaft; 420. Bushing;

[0026] x, first direction; z, height direction. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] The detection device provided in the embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that the x-direction in the drawings is the first direction, and the z-direction is the height direction. In the drawings, for ease of drawing, the dimensions are not necessarily proportional to the actual dimensions.

[0034] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of a robotic arm is provided. Figure 2 This is a schematic diagram of the structure of the first drive mechanism in one embodiment.

[0035] like Figure 1 and Figure 2As shown, an embodiment of this application provides a detection device 10, including a detection mechanism (not shown), a first drive mechanism 100, and a robotic arm 200. The detection mechanism includes a generator and a detection probe 11 electrically connected to the generator. The first drive mechanism 100 includes an output shaft 110 and a constant speed control module (not shown) electrically connected to the output shaft 110. The output shaft 110 is connected to the generator to output torque to the generator, and the constant speed control module is used to adjust the input voltage of the first drive mechanism 100 in real time according to the rotational speed of the output shaft 110. The robotic arm 200 includes a base 210 and a first connecting rod 220 movably connected to the base 210, and the detection probe 11 is mounted on the first connecting rod 220.

[0036] Optionally, the testing mechanism is a mechanical insulation resistance meter. This mechanism also includes a crank connected to a generator. When an externally input torque drives the crank to rotate, the generator generates direct current. The DC output voltage of the testing mechanism can be 500V, 1000V, 2500V, or 5000V, which can be selected according to the device under test. The mechanical insulation resistance meter is used for remote insulation measurement. Its principle is to apply a specific high-voltage DC voltage across the insulating medium, measure the weak leakage current flowing through the medium, and calculate the insulation resistance value using Ohm's law, thereby determining the integrity of the insulation layer. When the insulation layer is intact, its resistance value is high; while when the insulation layer is damaged, aged, or damp, the resistance value will decrease significantly.

[0037] Optionally, the detection mechanism also includes a connecting wire connecting the generator and the detection probe 11. This connecting wire can be wound or coiled around one side of the generator. When the detection device 10 is not in the detection state, the first connecting rod 220 is coiled around the base 210, and the connecting wire is coiled or coiled around the outside of the generator. When the detection device 10 is in the detection state, the first connecting rod 220 moves the detection probe 11 away from the base 210, and the connecting wire extends until the detection probe 11 contacts the point to be tested. Then, the first drive mechanism 100 drives the generator to output a rated DC voltage to the point to be tested. The detection probe 11 measures the leakage current at the point to be tested and converts the leakage current into an insulation resistance value through the circuit built into the detection mechanism. After the test is completed, the first connecting rod 220 moves the detection probe 11 towards the base 210, separating the detection probe 11 from the point to be tested, and the first drive mechanism 100 stops outputting torque to the generator.

[0038] Optionally, the testing mechanism also includes a controllable grounding wire, to which both the testing probe 11 and the generator are connected. The grounding wire is used to discharge the testing mechanism after it has completed its testing function, releasing any residual charge within the mechanism.

[0039] Optionally, the first drive mechanism 100 is an electric motor. The speed control module includes a speed monitoring unit and a microprocessor. The speed monitoring unit monitors the speed of the output shaft 110. When the speed monitoring unit detects that the speed of the output shaft 110 is higher or lower than the set speed, it sends a signal to the microprocessor. The microprocessor adjusts the input voltage of the electric motor in real time according to the signal. For example, when the speed of the output shaft 110 is higher than the set speed, the microprocessor reduces the input voltage to slow down the speed; when the speed of the output shaft 110 is lower than the set speed, the microprocessor increases the voltage to increase the speed, thereby ensuring the stability of the output torque of the generator by the first drive mechanism 100 and improving the measurement accuracy of the detection mechanism. In this embodiment, the rated speed of the output shaft 110 is 120 rpm. When the actual speed of the output shaft 110 is higher or lower than 120 rpm, the microprocessor will adjust the voltage in real time to ensure that the speed of the output shaft 110 is stable at 120 rpm. The output shaft 110 is connected to the generator via a coupling, and the rotor assembly in the generator also rotates at 120 rpm.

[0040] The detection device 10 provided in this embodiment, by setting the first drive mechanism 100 to output torque from the generator in the detection mechanism, and the first drive mechanism 100 including a constant speed control module, can improve the speed stability of the output shaft 110 and thus improve the measurement accuracy of the detection device 10 by adjusting the input voltage of the first drive mechanism 100 in real time according to the rotational speed of the output shaft 110. By setting a robotic arm 200, and the robotic arm 200 including a base 210 and a first connecting rod 220 movably connected to the base 210, the user can drive the first connecting rod 220 to move relative to the base 210, thereby moving the detection probe 11 on the first connecting rod 220 closer to the position to be detected, so that the operator does not need to operate at close range, reducing the risk of electric shock to the operator and thus improving the safety of the detection device 10.

[0041] In some embodiments, the base 210 includes a seat and a receiving cavity (not shown) extending along a first direction (x direction in the figure), the receiving cavity having an opening on one side of the first direction x. A first link 220 extends along the first direction x, at least a portion of the first link 220 being located within the receiving cavity.

[0042] Optionally, the receiving cavity is provided with a slide rail extending along the first direction x, and the first connecting rod 220 is movably mounted on the slide rail.

[0043] Optionally, there may be multiple first links 220, which are sequentially nested along the first direction x to form a telescopic link, thereby increasing the extension distance of the robotic arm 200. In this embodiment, the total extension length of the first links 220 is preferably 0.5-5 meters.

[0044] Optionally, the robotic arm 200 further includes a second drive mechanism (not shown), which is connected to the first link 220. The second drive mechanism is used to drive the first link 220 to move relative to the base 210 along a first direction x. The second drive mechanism can be a motor or a cylinder; in this embodiment, a stepper motor is used as an example.

[0045] Optionally, the second drive mechanism is equipped with a wireless receiving module, which is used to receive wireless signals and then control the start and stop of the second drive mechanism. In this embodiment, the wireless receiving module is preferably a 4G module, with an effective transmission distance of more than 5 meters, allowing the user to control the second drive mechanism from a distance of more than 5 meters from the detection device 10, thereby causing the first connecting rod 220 to extend forward in the first direction x until the detection probe 11 contacts the point to be measured. After the detection probe 11 has completed the detection, the user can also remotely control the second drive mechanism to drive in reverse, causing the first connecting rod 220 to reset towards the base 210, thereby separating the detection probe 11 from the point to be measured.

[0046] Optionally, the generator and the first drive mechanism 100 are mounted on the base 210, so that the generator and the first drive mechanism 100 are fixed in position, and only the detection probe 11 and the connecting wire move with the movement of the first link 220. Of course, in other embodiments, the generator and the first drive mechanism 100 can also be placed on the ground near the robotic arm 200, with only the detection probe 11 mounted on the first link 220 and connected to the generator through an extendable connecting wire.

[0047] The detection device 10 provided in this embodiment increases the extension distance of the robotic arm 200 by sequentially connecting multiple first links 220 along the first direction x to form a telescopic link. By installing a wireless receiving module on the second drive mechanism, the user can remotely control the second drive mechanism to start. When the detection probe 11 is energized and in contact with the point to be tested, the operator can wirelessly make close contact with the detection device 10, further reducing the risk of electric shock to the operator and thus improving the safety of the detection device 10.

[0048] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a robotic arm, a height adjustment mechanism, and an angle adjustment mechanism according to one embodiment.

[0049] like Figure 3 As shown, in some embodiments, the detection device 10 further includes a height adjustment mechanism 300, which includes a base 310 and a second link 320 movably connected to the base 310. The second link 320 extends along the height direction (the z direction in the figure), and the base 210 is mounted on the side of the second link 320 away from the base 310. The height direction z intersects with the first direction x.

[0050] Here, the first direction x can be understood as the horizontal direction.

[0051] Optionally, the height adjustment mechanism 300 further includes a third drive mechanism (not shown), which is connected to the second link 320 and is used to drive the second link 320 to move relative to the base 310 along the height direction z. The third drive mechanism can be a motor or a cylinder; in this embodiment, a stepper motor is used as an example for illustration.

[0052] Optionally, the third drive mechanism is also equipped with a wireless receiving module to receive remote control signals from the operator, so that the operator can remotely control the extension and retraction of the second link 320 in the height direction.

[0053] Optionally, the detection device 10 further includes an angle adjustment mechanism 400. The angle adjustment mechanism 400 includes a rotating shaft 410 and a bushing 420 sleeved on the rotating shaft 410. The rotating shaft 410 and the bushing 420 are rotatably connected. One of the rotating shaft 410 and the bushing 420 is disposed on the second connecting rod 320, and the other is disposed on the base 210. The second connecting rod 320 and the base 210 are rotatably connected through the angle adjustment mechanism 400. The user can change the orientation of the first connecting rod 220 through the angle adjustment mechanism 400. In this embodiment, the rotating shaft 410 is disposed on the base 210 and the bushing 420 is disposed on the second connecting rod 320 as an example for explanation.

[0054] Optionally, a level (not shown) may also be provided on the base 210. The level is used to help the user determine whether the base 210, the first connecting rod 220 and the detection probe 11 are in a horizontal state, so that the user can adjust the detection probe 11 to be horizontal by adjusting the height adjustment mechanism 300 and the angle adjustment mechanism 400.

[0055] In a specific operation, the operator can first move the base 310 to the ground near the test point and fix the base 310. Then, the operator can manually or mechanically adjust the second link 320 to raise or lower it, so that the detection probe 11 on the first link 220 is on the same horizontal plane as the test point in the height direction z. After the height adjustment is completed, the base 310 and the second link 320 are locked. Then, the operator uses the angle adjustment mechanism 400 to rotate the robotic arm 200 circumferentially relative to the height adjustment mechanism 300 until the detection probe 11 on the first link 220 points to the test point. After the angle adjustment is completed, the operator locks the rotating shaft 410 and the bushing 420 and moves them away from the detection device 10. Then, the operator moves away from the detection device 10 and remotely sends a wireless signal to start the first drive mechanism 100 and the second drive mechanism. The first link 220 drives the charged detection probe 11 to approach the test point until the detection probe 11 contacts the test point, and the detection mechanism begins detection.

[0056] The detection device 10 provided in this embodiment, by setting a height adjustment mechanism 300 and an angle adjustment mechanism 400, enables the detection probe 11 to not only be driven by the first connecting rod 220 to move in the first direction x, but also to be driven by the height adjustment mechanism 300 and the angle adjustment mechanism 400 to move in the height direction z, and to rotate on the horizontal plane, thereby improving the adjustment freedom of the detection probe 11 and enabling the detection device 10 to adapt to the test points at different positions.

[0057] Of course, in other embodiments, the robotic arm 200 can also be fixed to the ground by a telescopic tripod (not shown), and the telescopic tripod is connected to the base 210 by a ball joint (not shown) to realize the lifting and angle adjustment of the robotic arm 200.

[0058] In some embodiments, a beam emitter 221 is mounted on the end of the first link 220 away from the base 210. The beam emitter 221 is oriented in the same direction as the detection probe 11, and the beam emitter 221 and the detection probe 11 are arranged side by side. The beam emitter 221 is used to emit light along a first direction x.

[0059] It is easy to understand that since the beam emitter 221 faces the same direction as the detection probe 11, and the beam emitter 221 and the detection probe 11 are arranged side by side, when the operator adjusts the height and angle of the first link 220, the light emitted by the beam emitter 221 will be emitted along the extension direction of the first link 220. The operator can use the beam emitter 221 for assisted aiming; that is, when the beam emitter 221 projects a light spot on the point to be measured, the first link 220 can be considered to be successfully aligned. Afterward, when the first link 220 extends forward, the detection probe 11 will align with the point to be measured.

[0060] The detection device 10 provided in this embodiment provides a beam emitter 221 on the first link 220, and the orientation of the beam emitter 221 is the same as that of the detection probe 11. This allows the operator to adjust the height, angle and orientation of the first link 220 by the light emitted by the beam emitter 221, thereby improving the alignment accuracy of the detection probe 11 and enhancing the user experience of the detection device 10.

[0061] In some embodiments, the robotic arm 200, the height adjustment mechanism 300, and the angle adjustment mechanism 400 are all made of metal, but the surface of the metal material is covered with an insulating layer. The insulating layer is made of a high-voltage resistant insulating material that can withstand high voltages above 35kV to prevent the risk of leakage during operation.

[0062] Of course, in other embodiments, the robotic arm 200, the height adjustment mechanism 300, and the angle adjustment mechanism 400 may all be made of insulating material.

[0063] Specifically, this embodiment further describes the specific usage process of the detection device 10 through a practical application scenario. In this scenario, the detection device 10 is used to perform insulation remote measurement on three-phase contacts in a 35kV switchgear. First, the operator moves the base 310 to the ground near the switchgear and fixes the base 310. Then, the operator can manually adjust or mechanically drive the second connecting rod 320 to raise or lower it, so that the detection probe 11 on the first connecting rod 220 is on the same horizontal plane as the point to be measured in the height direction z. After the height adjustment is completed, the base 310 and the second connecting rod 320 are locked. Then, the operator uses the angle adjustment mechanism 400 to make the robotic arm 200 rotate circumferentially relative to the height adjustment mechanism 300 until the light emitted by the beam emitter 221 projects a light spot on one of the three-phase contacts in the switchgear. At this time, it can be considered that the detection probe 11 on the first connecting rod 220 is pointing to the three-phase contact. After angle adjustment, the operator locks the rotating shaft 410 and bushing 420 and moves away from the detection device 10. The operator then moves away from the detection device 10 and remotely sends a wireless signal to activate the first drive mechanism 100 and the second drive mechanism. The first connecting rod 220 drives the energized detection probe 11 close to the three-phase contact until the detection probe 11 contacts the point to be tested, at which point the detection mechanism begins testing. After testing one three-phase contact, the first connecting rod 220 retracts and repositions, completing the testing of all three three-phase contacts in sequence. After completing the measurements of all phases, the operator manipulates the first connecting rod 220 to exit the switch cabinet and shuts off the power to the detection device 10, then organizes the equipment and measurement data. Finally, a grounding wire is used to discharge the detection mechanism, releasing any residual charge within it.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A detection device, characterized in that, include: The testing mechanism includes a generator and a testing probe electrically connected to the generator; The first drive mechanism includes an output shaft and a constant speed control module electrically connected to the output shaft. The output shaft is connected to the generator for outputting torque to the generator. The constant speed control module is used to adjust the input voltage of the first drive mechanism in real time according to the rotational speed of the output shaft. The robotic arm includes a base and a first link movably connected to the base, wherein the detection probe is mounted on the first link.

2. The detection device according to claim 1, characterized in that, The base includes a seat body and a receiving cavity extending along a first direction, the receiving cavity having an opening on one side of the first direction; The first link extends along the first direction, and at least a portion of the first link is located within the receiving cavity.

3. The detection device according to claim 2, characterized in that, The robotic arm also includes: A second drive mechanism is connected to the first link, and the second drive mechanism is used to drive the first link to move relative to the base along the first direction.

4. The detection device according to claim 3, characterized in that, The second drive mechanism is equipped with a wireless receiving module.

5. The detection device according to claim 2, characterized in that, Also includes: The height adjustment mechanism includes a base and a second link movably connected to the base. The second link extends along the height direction, and the base is installed on the side of the second link away from the base. The height direction intersects with the first direction.

6. The detection device according to claim 5, characterized in that, Also includes: An angle adjustment mechanism includes a rotating shaft and a bushing sleeved on the rotating shaft. The rotating shaft and the bushing are rotatably connected. One of the rotating shaft and the bushing is disposed on a second connecting rod, and the other is disposed on a base. The second connecting rod and the base are rotatably connected through the angle adjustment mechanism.

7. The detection device according to claim 1, characterized in that, The constant speed control module includes a speed monitoring unit, which is used to monitor the speed of the output shaft.

8. The detection device according to claim 1, characterized in that, The rated speed of the output shaft is 120 rpm.

9. The detection device according to claim 1, characterized in that, A beam emitter is mounted on the end of the first link that is away from the base.

10. The detection device according to claim 1, characterized in that, The generator and the first drive mechanism are mounted on the base; The testing mechanism also includes connecting wires that connect the generator and the testing probe.

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