A split type current clamp meter without climbing
By using a split-type current clamp meter with an insulating rod and a magnetic induction detection head, the problems of poor applicability and cumbersome testing of existing current clamp meters are solved, enabling remote cable current detection and improving ease of use.
Patent Information
- Application Number
- CN202310047508.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-01-31
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2043-01-31
AI Technical Summary
Existing current clamp meters have poor applicability in use, cannot perform long-distance testing, and the testing process is cumbersome, requiring the cable to be removed or exposed for testing.
It adopts a split design, including a telescopic insulating rod and a detection head installed on the insulating rod. The detection head detects the internal current of the cable by magnetic induction, and the display is installed outside the insulating rod away from the detection head to realize remote detection.
This technology enables current detection without the need for close proximity or cable disconnection, improving the applicability and ease of use of the device and reducing the difficulty of detection.
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Figure CN116223880B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of measuring equipment, in particular to a non-climbing split type current clamp meter. BACKGROUND
[0002] In the electronic industry, various test tools are often needed to test some parameters such as resistance, capacitance, current, voltage, and temperature. Among them, the current clamp meter, i.e. the clamp-on ammeter, can not only measure current, but also measure voltage, resistance, etc. When measuring current, the jaws need to be opened to enclose the measured conductor. Therefore, the clamp-on ammeter is often used for high-voltage line current measurement and for periodic leakage current detection of lightning arresters and other high-voltage equipment.
[0003] At present, the existing current clamp meter (such as patent number: CN215678533U) discloses a clamp-on ammeter, which comprises a meter body, a movable wrench is arranged on the meter body, a first infrared distance sensor and a second infrared distance sensor are arranged on the meter body towards the center of the movable wrench, the first infrared distance sensor comprises a first emitter tube and a first receiver tube, the second infrared distance sensor comprises a second emitter tube and a second receiver tube, the first receiver tube and the second receiver tube are connected to a control circuit, the output end of the control circuit is connected with a prompt device, the prompt device is arranged on the meter body, when the signal strength received by the first receiver tube is greater than a preset strength, the first receiver tube sends out a first power-on signal, when the signal strength received by the second receiver tube is greater than the preset strength, the second receiver tube sends out a second power-on signal, when the control circuit receives the first power-on signal and the second power-on signal at the same time, the prompt device sends out a prompt signal.
[0004] However, during the implementation of the above technical solution, at least the following technical problems are found:
[0005] 1. Poor applicability: the existing current clamp meter needs to be clamped on the outside of the cable to be measured during use, and then the current clamp meter connected with the clamp body is used to detect the cable, which results in that the current clamp meter cannot be detected remotely, but only in a short distance (or the current clamp meter is sent to the position of the cable), which limits the use range of the current clamp meter and makes the use complicated.
[0006] 2. Complicated detection: the existing current clamp meter needs to be clamped on the outside of the cable to be measured during use, which results in that the cable to be detected needs to be completely exposed. However, since some cables are fixed on the outside of the wall by fixing devices or are closely connected with the outside of the object, the cable needs to be removed for detection during detection, which seriously affects the convenience of use of the device and makes the use process complicated. Therefore, we propose a non-climbing split type current clamp meter. SUMMARY
[0007] (1) Technical problems solved
[0008] In view of the deficiencies of the prior art, the application provides a split type current clamp meter without climbing, which solves the technical problems of poor applicability and complicated detection of the current clamp meter in use.
[0009] (II) Technical scheme
[0010] To achieve the above object, the application is implemented by the following technical scheme:
[0011] A split type current clamp meter without climbing, which comprises an insulating rod with telescopic function and a detection head mounted on the insulating rod, the detection head being used to detect whether there is current passing through the inside of the cable, and finally a display mounted on the insulating rod displays the detected value (the detected value):
[0012] The insulating rod has telescopic function and can also be in a folding form;
[0013] The detection head is mounted at the end of the insulating rod, and the detection end is used to detect whether the cable is powered on, and the detection is performed in a magnetic induction mode; and
[0014] The display is mounted at the end of the insulating rod away from the detection head, which is convenient for the staff to observe and cannot be viewed at close range, thereby improving the use range of the device;
[0015] The detection head and the display are electrically connected, and the display displays the detection result of the detection head.
[0016] As shown in the prior art (using the current clamp meter), preferably, the detection head comprises: Figure 2 The connecting seat is mounted at the end of the insulating rod and is fixedly connected with the end of the insulating rod;
[0017] The clamp head is mounted at the front end of the connecting seat and is used to be clamped on the outside of the cable, so as to surround the outside of the cable, thereby detecting whether the current magnetic field is generated on the outside of the cable;
[0018] The clamp head comprises an upper clamp and a lower clamp, which are combined to form a complete whole, one end of the upper clamp is fixedly connected with the connecting seat and remains in position, one end of the lower clamp is hingedly connected with the connecting seat, which is convenient for movement (in cooperation with the upper clamp), and the end of the lower clamp corresponds to the end of the upper clamp, so that when the upper and lower clamps are attached, a whole ring is formed to be sleeved on the outside of the cable.
[0019] Preferably, the connecting seat and the lower clamp are connected through a torsional spring, and the torsional force of the torsional spring is away from the upper clamp, so that when the lower clamp is only subjected to the torsional force of the torsional spring (without being subjected to other external forces), the upper clamp and the lower clamp are not attached to each other, as shown in
[0020] Figure 2 The cable is conveniently placed between the two upper clamps.
[0021] Preferably, the other end of the insulating rod is provided with a handle for facilitating remote operation by the user, and the handle comprises a movable handle and a fixed handle; the movable handle is hinged to the fixed handle, and the movable handle is connected to the lower clamp through a pulling rope, so that when the user presses the movable handle, the lower clamp can be rotated to adjust the distance between the upper and lower clamps, thereby facilitating the use of the device.
[0022] Preferably, the detection head comprises:
[0023] The fitting plate is provided with a through hole at the front end for placing the rotating shaft;
[0024] The rotating shaft is installed in the through hole of the fitting plate and is hinged to the fitting plate to facilitate normal rotation of the rotating shaft;
[0025] The rotating shaft is provided with a metal rod on the outside, which cuts the magnetic induction lines to generate an induced current, and the end of the metal rod is in contact with the conductive ring on the inner wall of the through hole, which cooperates with the metal rod to facilitate the cutting of the magnetic induction lines to generate a voltage difference and form an electric current, which is finally detected by the ammeter. This process only requires the ammeter to be close to the ammeter, without the need to wrap around the outside of the cable, thereby reducing the difficulty of operation;
[0026] The rotating shaft is driven to rotate by the driving motor installed inside the insulating rod, so that the driving motor transmits the torque to the rotating shaft, causing the rotating shaft to rotate the metal rod to stably cut the magnetic induction lines, thereby forming a stable current for subsequent detection.
[0027] Preferably, the output shaft of the driving motor and the outside of the rotating shaft are provided with a transmission belt, and the transmission belt is located inside the insulating rod, so that when the driving motor rotates, the rotating shaft can be driven to rotate, causing the metal rod to cut the magnetic induction lines.
[0028] The inner wall of the transmission belt and the outer wall of the rotating shaft are provided with teeth, and the teeth on the inner wall of the transmission belt are engaged with the teeth on the outer wall of the rotating shaft to improve the stability of the torque transmission of the driving motor, and finally the cutting of the magnetic induction lines reaches a stable state.
[0029] Preferably, the top of the fitting plate is provided with a corresponding seat, and the top of the corresponding seat is arc-shaped to facilitate the fitting with the outer wall of the cable, and the fitting plate is fitted with the surface of the cable through the corresponding seat.
[0030] The length direction of the fitting plate is consistent with the extension direction of the cable, at this time, the magnetic field generated by the cable production passes through the through hole on the outside of the fitting plate, and then the magnetic induction lines passing through the through hole are cut by the metal rod to form an electric current.
[0031] Preferably, the inside of the insulating rod is provided with an ammeter, and the positive and negative poles of the ammeter are connected with the rotating shaft and the conductive ring through wires, so that the voltage difference generates current, and the current is detected by the ammeter.
[0032] The rotating shaft is sleeved with a bearing, and a plurality of supporting rods are arranged between the outer wall of the bearing and the inner wall of the through hole, so as to connect the through hole and the rotating shaft together, thereby keeping the stability of the position of the rotating shaft, facilitating the normal cutting of the metal rod, and improving the applicability of the device.
[0033] Preferably, the detection head comprises:
[0034] The detection seat is provided with a through hole at the front end, facilitating the placement of the metal plate;
[0035] The metal plate is movably installed in the through hole, and the end of the metal plate is attached to the conductive plate in the through hole, so that the magnetic induction lines passing through the through hole can be cut when the metal plate shakes;
[0036] The metal plate is movably installed in the through hole, and the end of the metal plate is attached to the conductive plate in the through hole, so that the magnetic induction lines passing through the through hole can be cut when the metal plate shakes;
[0037] The inner wall of the through hole is provided with an electromagnetic plate, and the electromagnetic plate corresponds to the metal plate up and down, thereby improving the vibration frequency and vibration time of the metal plate.
[0038] Preferably, the number of conductive plates is two, and the two ends of the metal plate are attached to the two conductive plates, so as to conduct the current generated by cutting the metal plate to the two conductive plates, so that a voltage difference is formed between the two conductive plates, thereby forming a current;
[0039] The inside of the insulating rod is provided with an alternating current ammeter, and the positive and negative poles of the alternating current ammeter are connected with the two conductive plates through wires, and the size of the electromagnetic field cut by the metal plate is detected by the alternating current ammeter, thereby roughly estimating the size of the current.
[0040] (Three) beneficial effects
[0041] 1. Since the detection head and the display device are separated by the insulating rod, the technical problem of poor applicability of the existing current clamp meter during use is effectively solved, and the purpose of remote detection of the cable is achieved, without the need to climb to detect, thereby improving the applicability of the device and reducing the detection difficulty.
[0042] 2. Since the magnetic induction lines are cut to detect whether there is a current magnetic field around the cable, the technical problem of complicated detection of the existing current clamp meter during use is effectively solved, and the energization of the cable can be detected at a certain distance, thereby reducing the difficulty and limitation of cable detection. BRIEF DESCRIPTION OF DRAWINGS
[0043] The above description is only a summary of the technical scheme of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, the preferred embodiments of the present application are described in detail as follows with reference to the accompanying drawings.
[0044] Figure 1 It is a structure diagram of the embodiment of the present application.
[0045] Figure 2 It is a structure diagram of the embodiment 1 of the present application.
[0046] Figure 3 It is a structure diagram of the embodiment 2 of the present application.
[0047] Figure 4 It is a partial structure diagram of the adhering plate and the driving motor in the embodiment 2 of the present application.
[0048] Figure 5 It is a partial structure diagram of the conductive ring and the metal rod in the embodiment 2 of the present application.
[0049] Figure 6 It is a structure diagram of the embodiment 3 of the present application.
[0050] Figure 7 It is a linkage structure diagram of the metal plate in the embodiment 3 of the present application.
[0051] Figure 8 It is a use state diagram of the embodiment 2 of the present application.
[0052] Legend: 1, insulating rod; 21, connecting seat; 22, upper clamp; 23, lower clamp; 3, handle; 4, display; 51, adhering plate; 52, corresponding seat; 53, rotating shaft; 54, metal rod; 55, conductive ring; 56, transmission belt; 57, driving motor; 61, detection seat; 62, metal plate; 63, conductive plate; 64, electromagnetic plate. DETAILED DESCRIPTION
[0053] The embodiment of the present application provides a split type current clamp meter without climbing, effectively solves the technical problems of poor applicability and complicated detection of the current clamp meter in use, realizes remote detection of the cable, and improves the applicability and reduces the detection difficulty of the device, since the detection head and the display device are separated by the insulating rod in use of the current clamp meter; the current clamp meter can detect the energization of the cable at a certain distance by cutting the magnetic induction lines to detect whether there is a current magnetic field around the cable, thereby reducing the difficulty and limitation of the cable detection.
[0054] Embodiment 1
[0055] The technical solution in this application embodiment effectively solves the technical problem of poor applicability of existing current clamp meters during use. The overall idea is as follows:
[0056] To address the problems existing in the prior art, the present invention provides a height-free, split-type current clamp meter. This split-type current clamp meter includes an insulating rod 1 with a telescopic function and a detection head mounted on the insulating rod 1. The detection head is used to detect whether current flows through the cable, and the detected value is finally displayed on a display 4 mounted on the insulating rod 1.
[0057] Insulating rod 1 has a telescopic function and can also be foldable;
[0058] A detection head is installed at the end of insulating rod 1, and the detection end is used to detect whether the cable is energized, using magnetic induction for detection; and
[0059] Display 4 is installed on the outside of the insulating rod 1 and at the end away from the detection head, making it convenient for staff to observe but not for close-up viewing, thus increasing the scope of use of the device;
[0060] The detection head and the display 4 are electrically connected, and the display 4 displays the detection results of the detection head.
[0061] like Figure 2 As shown (using an existing current clamp meter), in some examples, the detection head includes:
[0062] Connecting seat 21 is installed at the end of insulating rod 1 and is fixedly connected to the end of insulating rod 1;
[0063] The clamp head, installed at the front end of the connector 21, is used to clamp the outside of the cable, thereby surrounding the outside of the cable and detecting whether a current magnetic field is generated outside the cable.
[0064] The clamp head includes an upper clamp 22 and a lower clamp 23, which are combined to form a complete unit. One end of the upper clamp 22 is fixedly connected to the connecting seat 21 to keep it in place, while one end of the lower clamp 23 is hinged to the connecting seat 21 for easy movement (in conjunction with the upper clamp 22). The end of the lower clamp 23 corresponds to the end of the upper clamp 22. Therefore, when the two clamps are in contact, they form a complete ring, which is then fitted over the outside of the cable.
[0065] In some examples, the connecting seat 21 and the lower clamp 23 are connected by a torsion spring, and the torsion of the torsion spring is directed away from the upper clamp 22. Therefore, when the lower clamp 23 is only subjected to the torsion of the torsion spring (without the action of other external forces), the upper clamp 22 and the lower clamp 23 do not fit together. Figure 2 As shown, this makes it easy to insert the cable between the two clips.
[0066] In some examples, the other end of the insulating rod 1 is provided with a handle 3, which is convenient for remote operation by the user, and the handle 3 comprises a movable handle and a fixed handle; wherein the movable handle is hinged to the fixed handle, and the movable handle is connected to the lower clamp 23 through a traction rope, so that when the user presses the movable handle, the lower clamp 23 can be rotated to adjust the distance between the upper and lower clamps, thereby facilitating the use of the device.
[0067] In the specific implementation process, the length of the insulating rod 1 is adjusted so that it can extend to the position of the cable, then the jaws at the end of the insulating rod 1 are stretched to the position of the cable, and the upper clamp 22 and the lower clamp 23 are respectively located on both sides of the cable, then the handle 3 is pressed, so that the handle 3 drives the upper clamp 22 and the lower clamp 23 to close, thereby forming a ring (using the existing current clamp meter).
[0068] After the clamp detection, the result detected by the detection head is transmitted to the display 4 through the wire, and the result detected by the detection head is displayed through the display 4, so that the staff does not need to hold the current clamp meter to the position of the cable for detection, thereby avoiding the need to use (i.e. detect the position of the higher cable).
[0069] Embodiment 2
[0070] Based on Embodiment 1, the present application effectively solves the technical problem of complicated detection when using the existing current clamp meter, and the overall idea is as follows:
[0071] The detection head comprises:
[0072] The fitting plate 51 is provided with a through hole at the front end, which is convenient for placing the rotating shaft 53;
[0073] The rotating shaft 53 is installed in the through hole of the fitting plate 51 and is hinged to the fitting plate 51, which is convenient for normal rotation of the rotating shaft 53;
[0074] Wherein, the outer part of the rotating shaft 53 is provided with a metal rod 54, which cuts the magnetic induction line to generate induced current, and the end of the metal rod 54 is fitted with a conductive ring 55 in the inner wall of the through hole, which cooperates with the metal rod 54 to facilitate the cutting of the magnetic induction line to generate a voltage difference, so as to form a current which is finally detected by the ammeter, and this process only needs to be close to the ammeter, without the need to surround the outside of the cable, thereby reducing the difficulty of operation;
[0075] The rotating shaft 53 is driven to rotate by the driving motor 57 installed in the insulating rod 1, which is convenient for the driving motor 57 to transmit torque to the rotating shaft 53, so that the rotating shaft 53 drives the metal rod 54 to rotate, thereby stably cutting the magnetic induction line to form a stable current, which is convenient for subsequent detection.
[0076] In some examples, the output shaft of the driving motor 57 and the outer sleeve of the rotating shaft 53 are provided with a transmission belt 56, and the transmission belt 56 is located inside the insulating rod 1, so that when the driving motor 57 rotates, the rotating shaft 53 can be driven to rotate, so that the metal rod 54 cuts the magnetic induction lines;
[0077] The inner wall of the transmission belt 56 and the outer wall of the rotating shaft 53 are provided with clamping teeth, and the clamping teeth of the inner wall of the transmission belt 56 are engaged with the clamping teeth of the outer wall of the rotating shaft 53, so as to improve the stability of the torque transmission of the driving motor 57, and finally make the cutting of the magnetic induction lines reach a stable state.
[0078] In some examples, the top of the fitting plate 51 is provided with a corresponding seat 52, and the top of the corresponding seat 52 is arc-shaped, which is convenient for fitting with the outer wall of the cable. The fitting plate 51 is fitted with the surface of the cable through the corresponding seat 52;
[0079] The length direction of the fitting plate 51 is consistent with the extension direction of the cable. At this time, the magnetic field generated by the cable production passes through the through hole outside the fitting plate 51, and then the magnetic induction lines passing through the through hole are cut by the metal rod 54, so as to form an electric current.
[0080] In some examples, the inside of the insulating rod 1 is provided with an ammeter, and the positive and negative electrodes of the ammeter are connected with the rotating shaft 53 and the conductive ring 55 through wires respectively, so that the voltage difference generated forms an electric current, and the size of the electric current is detected by the ammeter;
[0081] The outer sleeve of the rotating shaft 53 is provided with a bearing, and a plurality of supporting rods are installed between the outer wall of the bearing and the inner wall of the through hole, which is convenient for connecting with the through hole together, so as to keep the stability of the position of the rotating shaft 53, facilitate the normal cutting of the metal rod 54, and improve the applicability of the device.
[0082] In the specific implementation process, the fitting plate 51 is stretched to the direction of the cable through the insulating rod 1, and then the extension direction of the cable is consistent with the length direction of the fitting plate 51 (that is, when the current passes through the cable, the current magnetic field can stably pass through the through hole), and then the driving motor 57 drives the transmission belt 56 to rotate. Since the transmission belt 56 is sleeved on the outside of the rotating shaft 53, when the driving motor 57 rotates, the rotating shaft 53 can be driven to rotate synchronously, and the metal rod 54 connected to the outside of the rotating shaft 53 can cut the magnetic induction lines passing through the through hole, so that a voltage difference is generated in the metal rod 54. The center of the metal rod 54 is connected to one pole of the ammeter through a wire, and the conductive ring 55 is connected to the other pole of the ammeter through a wire, so that the current flows in the ammeter, and finally the detection result is displayed by the display 4. Therefore, whether the current flows through the cable can be judged by observing whether there is a value on the ammeter, and the size of the current inside the cable can be detected by the size of the current (roughly detect the result).
[0083] Through the above manner, the cable fixed with the wall body and the clamp body (or object) can be detected without adjusting the cable, thereby improving the applicability and convenience of the device.
[0084] Embodiment 3
[0085] Based on the embodiment 1, the embodiment of the application effectively solves the technical problem of complicated detection of the existing current clamp meter in use, and the general idea is as follows:
[0086] The detection head comprises:
[0087] The detection seat 61 is provided with a through hole at the front end, which is convenient for placing the metal plate 62;
[0088] The metal plate 62 is movably installed in the through hole, and the end of the metal plate 62 is attached to the conductive plate 63 in the through hole, so that when the metal plate 62 shakes, the magnetic induction lines passing through the through hole can be cut;
[0089] Among them, the metal plate 62 is installed on the upper and lower surfaces of the metal plate 62, which is convenient for the metal plate 62 to shake, and the metal plate 62 is connected to the inner wall of the through hole through the spring, so as to cut the magnetic induction lines;
[0090] The inner wall of the through hole is provided with an electromagnetic plate 64, and the electromagnetic plate 64 corresponds to the upper and lower surfaces of the metal plate 62, so as to improve the vibration frequency and vibration time of the metal plate 62.
[0091] In some examples, the number of conductive plates 63 is two, and the two ends of the metal plate 62 are attached to the two conductive plates 63 respectively, so as to conduct the current generated by cutting the metal plate 62 to the two conductive plates 63, so that a voltage difference is formed between the two conductive plates 63, thereby forming a current;
[0092] Among them, the inside of the insulating rod 1 is installed with an alternating current meter, and the positive and negative poles of the alternating current meter are connected with the two conductive plates 63 through wires, and the size of the electromagnetic field cut by the metal plate 62 is detected by the alternating current meter, so as to roughly estimate the size of the current.
[0093] In the specific implementation process, the detection seat 61 is extended to the direction of the cable through the insulating rod 1, then the extension direction of the cable is consistent with the length direction of the detection seat 61 (i.e. when the current passes through the cable, the current magnetic field can stably pass through the through hole), then the electromagnetic plate 64 is powered to generate magnetism, so that the metal plate 62 moves to the direction of the electromagnetic plate 64, and the springs on both sides of the metal plate 62 are compressed (the spring above the metal plate 62 is stretched, and the spring below the metal plate 62 is compressed), then the electromagnetic plate 64 is powered off, so that the metal plate 62 vibrates under the action of the spring, thereby cutting the magnetic induction lines passing through the through hole, so that a voltage difference is generated in the metal plate 62, and one end of the metal plate 62 is connected with one pole of the alternating current meter, and the other end of the metal plate 62 is connected with the other pole of the alternating current meter, so that the current flows in the alternating current meter, and finally the display 4 displays the detection result, so that whether the cable has current flowing through can be judged by observing whether the alternating current meter has a value, and the size of the current in the cable is detected (roughly detect the result).
[0094] In the above manner, the cable fixedly connected with the wall body and the pliers body (or the object) can be detected without adjusting the cable, thereby improving the applicability and the convenience of use of the device.
[0095] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limitations of the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.
Claims
1. A height-free, split-type current clamp meter, characterized in that, This split-type current clamp meter includes: Insulating rod (1); A detection head is installed at the end of the insulating rod (1), and the detection end is used to detect whether the cable is energized; and The display (4) is mounted on the outside of the insulating rod (1) and at the end away from the detection head; The detection head and the display (4) are electrically connected; The detection head includes: The bonding plate (51) has a through hole at its front end; The rotating shaft (53) is installed in the through hole of the bonding plate (51) and is hinged to the bonding plate (51); Among them, a metal rod (54) is installed on the outside of the rotating shaft (53), and the end of the metal rod (54) is in contact with the conductive ring (55) on the inner wall of the through hole; The rotating shaft (53) is driven to rotate by a drive motor (57) installed inside the insulating rod (1); Or the detection head may include: The detection seat (61) has a through hole at its front end; A metal plate (62) is movably installed in the through hole, and the end of the metal plate (62) is in contact with the conductive plate (63) in the through hole; Springs are installed on both the upper and lower surfaces of the metal plate (62), and the metal plate (62) is connected to the inner wall of the through hole through the springs; An electromagnetic plate (64) is installed on the inner wall of the through hole, and the electromagnetic plate (64) corresponds vertically to the metal plate (62).
2. The height-free split-type current clamp meter as described in claim 1, characterized in that: The other end of the insulating rod (1) is equipped with a handle (3), and the handle (3) includes a movable handle and a fixed handle; The moving handle is hinged to the fixed handle, and the moving handle is connected to the lower clamp (23) via a traction rope.
3. The non-climbing split-type current clamp meter as described in claim 1, characterized in that: The output shaft and rotating shaft (53) of the drive motor (57) are fitted with a transmission belt (56), and the transmission belt (56) is located inside the insulating rod (1); The inner wall of the transmission belt (56) and the outer wall of the rotating shaft (53) are both provided with locking teeth, and the locking teeth on the inner wall of the transmission belt (56) mesh with the locking teeth on the outer wall of the rotating shaft (53).
4. The non-climbing split-type current clamp meter as described in claim 1, characterized in that: The top of the bonding plate (51) is equipped with a corresponding seat (52), and the top of the corresponding seat (52) is arc-shaped. The bonding plate (51) is bonded to the surface of the cable through the corresponding seat (52). The length direction of the bonding plate (51) is consistent with the extension direction of the cable.
5. A height-free, split-type current clamp meter as described in claim 1, characterized in that: An ammeter is installed inside the insulating rod (1), and the positive and negative terminals of the ammeter are connected to the rotating shaft (53) and the conductive ring (55) respectively through wires; The rotating shaft (53) is fitted with a bearing on its outer side, and multiple support rods are installed between the outer wall of the bearing and the inner wall of the through hole.
6. A height-free, split-type current clamp meter as described in claim 1, characterized in that: There are two conductive plates (63), which are respectively attached to both ends of the metal plate (62); The insulating rod (1) is equipped with an AC ammeter, and the positive and negative terminals of the AC ammeter are connected to two conductive plates (63) through wires.
Citation Information
Patent Citations
Clamp-type ammeter
CN215678533U
Line current monitoring device for electricity consumption abnormality analysis
CN112255446A