Low-voltage electric leakage locator

Abstract

The invention discloses a low-voltage electric leakage locator, which relates to the field of electric leakage detection, and specifically comprises a clamp current meter and two clamp arms arranged on the clamp current meter, and also comprises a telescopic rod arranged on the clamp current meter; the power unit is arranged between the clamp flow meter and the telescopic rod; the auxiliary unit is arranged between the clamp flow meter and the power unit, through the arrangement of the power unit and the auxiliary unit, the clamp arm of the clamp flow meter can be controlled to be opened or closed at the handheld end of the telescopic rod, and meanwhile, a detection line can be conveniently separated from the clamp arm, so that the detection difficulty of remote operation is reduced, and the detection efficiency is improved. And the detection operation risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of leakage detection, in particular to a low-voltage leakage locator. Background Art

[0002] At present, the leakage locating method of low-voltage overhead lines usually adopts the existing leakage locator for positioning and detection. When implementing the specific operation, the operator usually climbs to the transformer position on the electric pole, and uses the clamp ammeter to detect the current of different neutral, live and ground wires, so as to determine which specific wire has a problem through the detected current.

[0003] However, workers are required to climb directly to conduct inspection, which may easily cause the risk of electric shock to the workers. In addition, if a telescopic rod is directly added to the clamp meter and then extended to the inspection position to inspect different inspection lines, the opening and closing of the clamp arm of the clamp meter is not easy to control. In addition, since the closing and opening positions of the two clamp arms of the clamp meter are set in an arc, and the inspection line is not necessarily in a straightened state and has a certain degree of softness, when the inspection line is separated from the clamp arm, it is easy to get stuck in the clamp arm, resulting in the inspection line being difficult to detach after the inspection, thereby increasing the difficulty of the entire inspection process. For this reason, we have designed a detection locator.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a low-voltage leakage locator to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-voltage leakage locator, comprising a current clamp meter and two clamp arms arranged on the current clamp meter, and also comprising:

[0006] A telescopic rod, arranged on the clamp meter;

[0007] A power unit is disposed between the clamp meter and the telescopic rod, and is used to simultaneously open and close the two clamp arms at an end of the telescopic rod away from the clamp meter;

[0008] The auxiliary unit is arranged between the clamp meter and the power unit, and is used to separate the clamped detection line from between the two clamp arms after the detection is completed.

[0009] Preferably, the two clamp arms are rotatably arranged on the clamp meter via a rotating shaft; and

[0010] The power unit comprises:

[0011] Two sets of first gears are fixedly arranged at two ends of the rotating shaft and are rotatably arranged on the clamp meter through the rotating shaft;

[0012] Two sets of second gears are symmetrically and rotationally arranged on the clamp meter, and are respectively meshed with the two sets of first gears.

[0013] A rack is disposed between the two sets of the second gears and meshes with the two sets of the second gears, and the rack is slidably disposed on the clamp meter;

[0014] A pull wire, one end of which is connected to the rack, and the other end of which passes through the inside of the telescopic rod to a pull ring provided at the end of the telescopic rod away from the clamp meter;

[0015] A reset member is arranged at the position of the rack and is used for resetting the rack after being pulled.

[0016] Preferably, the reset element comprises:

[0017] A slide groove is provided on the clamp flow meter and is used for the rack to slide up and down;

[0018] A return spring is arranged in the slide slot, with one end abutting against the rack and the other end abutting against the end of the slide slot.

[0019] Preferably, the auxiliary unit comprises:

[0020] Two groups of arc-shaped grooves are arranged on both sides of the two groups of clamp meters;

[0021] Two groups of guide rods, each of which is provided with a guide shaft, the guide rods are rotatably arranged through the guide shaft and the clamp meter, and the two groups of guide rods are provided with a sliding shaft at the position of the arc groove, one end of the sliding shaft is fixed to the guide rod, and the other end is slidably arranged in the arc groove;

[0022] The cooperative component is arranged between the end of the guide rod away from the sliding shaft and the second gear, and is used to drive the guide rod to swing periodically so that the detected line can be smoothly separated from the two groups of clamp arms after the detection is completed.

[0023] Preferably, the guide rod includes a first slide rod and a second slide rod, and the first slide rod and the second slide rod are slidably arranged to realize the change of the total length of the guide rod, an elastic member is arranged between the first slide rod and the second slide rod, and the second slide rod is provided with a limiting groove for the sliding of the first slide rod, and the elastic member is an adjustment spring arranged in the limiting groove, and one end of the adjustment spring abuts against the first slide rod, and the other end abuts against the end of the limiting groove.

[0024] Preferably, the collaborative component includes:

[0025] A gear shaft, one end of which is concentrically arranged with the second gear, and the other end of which penetrates the clamp meter and is provided with a third gear, a ratchet structure is provided between the gear shaft and the third gear, and is used to drive the third gear to rotate through the gear shaft when the rack slides downward to drive the second gear to rotate, and does not drive the third gear to rotate when the rack is reset upward;

[0026] A fourth gear is meshed with the third gear, a rotating plate is fixedly arranged on the fourth gear, and a rotating shaft is arranged at one end of the rotating plate away from the fourth gear;

[0027] The rotating groove is arranged on the guide rod and is used for the rotating shaft to slide therein.

[0028] Preferably, a guide plate is provided at one end of the guide rod close to the arc groove, so that when the guide rod slides to the end where the two arc grooves are close to each other, there is a certain distance between the guide rod and the end of the clamp arm, so that the detection line can smoothly leave this position and avoid being stuck there.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention can realize the control of opening or closing the clamp arm of the clamp meter at the handheld end of the telescopic rod by setting the power unit and the auxiliary unit, and can also facilitate the detachment of the detection line from the clamp arm, thereby reducing the detection difficulty of long-distance operations and reducing the risks of detection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a screenshot of the clamp meter of the present invention;

[0033] Figure 3 It is a cross-sectional view of the current clamp table of the present invention;

[0034] Figure 4 It is a cross-sectional view of the clamp flow table from another perspective of the present invention;

[0035] Figure 5 This is a schematic diagram of the ratchet structure of the present invention;

[0036] Figure 6 It is a partial cross-sectional view of the guide rod of the present invention;

[0037] Figure 7 This is the initial state diagram of the current clamp meter of the present invention;

[0038] Figure 8 The diagram of the clamp meter of the present invention in the open state;

[0039] Fig. 9 This is a diagram of the first closing state of the clamp arm of the present invention;

[0040] Fig.10 This is a schematic diagram of the state of the clamp meter of the present invention when it is off-line;

[0041] Fig.11 for Figure 3 Enlarged view of point A in the middle;

[0042] Fig.12 for Figure 4 Enlarged view of point B in the middle.

[0043] Figure numerals: 1-clamp flow meter; 2-clamp arm; 3-telescopic rod; 4-power unit; 41-first gear; 42-second gear; 43-rack; 44-pull wire; 45-pull ring; 46-slide groove; 47-reset spring; 5-auxiliary unit; 51-arc groove; 52-guide rod; 521-first slide rod; 522-second slide rod; 523-elastic member; 53-guide shaft; 54-slide shaft; 55-cooperative component; 551-gear shaft; 552-third gear; 553-ratchet structure; 554-fourth gear; 555-rotating plate; 556-rotating shaft; 557-rotating groove; 558-guide plate; 6-rotating shaft. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-12 The present invention provides a technical solution: a low-voltage leakage locator, comprising a current clamp meter 1 and two clamp arms 2 arranged on the current clamp meter 1, and further comprising:

[0046] A telescopic rod 3 is arranged on the current clamp meter 1;

[0047] A power unit 4 is disposed between the current clamp 1 and the telescopic rod 3, and is used to simultaneously open and close the two clamp arms 2 at an end of the telescopic rod 3 away from the current clamp 1;

[0048] The auxiliary unit 5 is arranged between the clamp meter 1 and the power unit 4, and is used to separate the clamped detection line from between the two clamp arms 2 after the detection is completed.

[0049] The two clamp arms 2 are rotatably arranged on the clamp meter 1 via a rotating shaft 6; and

[0050] The power unit 4 comprises:

[0051] Two sets of first gears 41 are fixedly disposed at both ends of the rotating shaft 6 and are rotatably disposed on the current clamp meter 1 through the rotating shaft 6;

[0052] Two sets of second gears 42 are symmetrically and rotationally arranged on the clamp meter 1, and are respectively meshed with the two sets of first gears 41.

[0053] A rack 43 is disposed between two groups of the second gears 42 and meshes with the two groups of the second gears 42. The rack 43 is slidably disposed on the clamp meter 1.

[0054] A pull wire 44, one end of which is connected to the rack 43, and the other end of which passes through the inside of the telescopic rod 3 to the end of the telescopic rod 3 away from the clamp meter 1, where a pull ring 45 is provided;

[0055] The reset member is arranged at the position of the rack 43 and is used for resetting the rack 43 after being pulled.

[0056] In addition, the reset element comprises:

[0057] A slide groove 46 is provided on the clamp meter 1 and is used for the rack 43 to slide up and down;

[0058] The return spring 47 is disposed in the slide slot 46 , with one end abutting against the rack 43 and the other end abutting against the end of the slide slot 46 .

[0059] At the same time, the auxiliary unit 5 includes:

[0060] Two groups of arc-shaped grooves 51 are arranged on both sides of the two groups of current clamp meters 1;

[0061] Two groups of guide rods 52, both of which are provided with guide shafts 53, the guide rods 52 are rotatably arranged through the guide shafts 53 and the clamp meter 1, and the two groups of guide rods 52 are provided with sliding shafts 54 at the positions of the arc grooves 51, one end of the sliding shaft 54 ​​is fixed to the guide rods 52, and the other end is slidably arranged in the arc grooves 51;

[0062] The cooperative component 55 is arranged between the end of the guide rod 52 away from the sliding shaft 54 ​​and the second gear 42, and is used to drive the guide rod 52 to swing periodically so that the detected line can be smoothly separated from the two groups of clamp arms 2 after the detection is completed.

[0063] Among them, the guide rod 52 includes a first slide bar 521 and a second slide bar 522, and the first slide bar 521 and the second slide bar 522 are slidingly arranged to realize the change of the total length of the guide rod 52, and an elastic member 523 is arranged between the first slide bar 521 and the second slide bar 522, and a limiting groove for the sliding of the first slide bar 521 is arranged on the second slide bar 522, and the elastic member 523 is an adjustment spring arranged in the limiting groove, and one end of the adjustment spring abuts against the first slide bar 521, and the other end abuts against the end of the limiting groove.

[0064] In addition, the collaborative component 55 includes:

[0065] A gear shaft 551 is provided with a third gear 552 at one end thereof and passes through the clamp meter 1. A ratchet structure 553 is provided between the gear shaft 551 and the third gear 552, and is used to drive the third gear 552 to rotate through the gear shaft 551 when the rack 43 slides downward to drive the second gear 42 to rotate. When the rack 43 is reset upward, the third gear 552 is not driven to rotate.

[0066] A fourth gear 554 is meshed with the third gear 552 . A rotating plate 555 is fixedly disposed on the fourth gear 554 . A rotating shaft 556 is disposed at one end of the rotating plate 555 away from the fourth gear 554 .

[0067] The rotation groove 557 is provided on the guide rod 52 for the rotation shaft 556 to slide therein.

[0068] Finally, a guide plate 558 is provided at one end of the guide rod 52 close to the arc groove 51, so that when the guide rod 52 slides to the end where the two arc grooves 51 are close to each other, there is a certain distance between the guide rod 52 and the end of the clamp arm 2, so that the detection line can smoothly leave this position and avoid being stuck there.

[0069] Operation and principle steps:

[0070] 1. Adjustment and control of the length of the telescopic rod 3;

[0071] In this implementation, the telescopic rod 3 can be an electric telescopic rod 3. A control button is installed at the hand-held position of the electric telescopic rod 3, and the length of the telescopic rod 3 is adjusted by the button, so that the clamp meter 1 installed on the other end is close to the detected line (wherein, in order to prevent the telescopic rod 3 from affecting the pull wire 44 when extending and retracting, a winding drum can be provided in the telescopic rod 3 to wind the pull wire, and the winding drum can be provided with a built-in micro motor to drive the winding drum to rotate, and the wire is released as the telescopic rod 3 is extended, and the wire is wound when it is retracted);

[0072] 2. The clamp arm 2 of the clamp meter 1 is opened and closed;

[0073] When the clamp meter 1 is extended to the position with the detection line, it is opened and closed for the first time;

[0074] like Figure 7 , 8 As shown, Figure 7 The clamp meter 1 is moved to the initial state at the detection line, and then the pull wire 44 is pulled by the pull ring 45 to drive the rack 43 to move downward, and the first gear 41 and the second gear 42 are meshed and drive the clamp arm 2 to open. At the same time, the third gear 552 connected by the gear shaft 551 and the second gear 42 drives the third gear 552 to rotate synchronously under the action of the ratchet structure 553, so that the fourth gear 554 rotates, and then rotates one end distance, so that the rotating shaft 556 rotates relatively with the rotating groove 557 on the guide rod 52, thereby driving the guide rod 52 to rotate. At this time, the guide rod 52 and the clamp arm 2 move synchronously, and the clamp arm 2 and the guide rod 52 are opened to both sides. Then, due to the elastic sliding setting of the guide rod 52, the length of the guide rod 52 can be automatically adjusted as the position of the clamp arm 2 changes;

[0075] like Figure 8 , 9 As shown, after the clamp arm 2 is opened, the detection line is inserted into the clamp arm 2, and then the pull ring 45 is loosened. Under the action of the reset spring 47, the rack 43 can be reset (a torsion spring can be provided at the rotating shaft 6 to increase the elastic force of the reset spring to increase the balance, resulting in insufficient reset of the clamp arm 2), thereby driving the first gear 41 and the second gear 42 to rotate, so that the clamp arm 2 is closed. At the same time, a ratchet structure 553 is provided between the gear shaft 551 and the third gear 552, so that the third gear 552 does not rotate, so that the guide rod 52 is still in an open state in the clamp arm 2. The specific state is as follows: Fig. 9 As shown, in this process, the guide rod 52 swings half a cycle, that is, the fourth gear 554 drives the rotating shaft 556 on the rotating plate 555 to rotate 180 degrees;

[0076] After the clamp meter 1 completes the detection, the detection data of the clamp meter 1 will be transmitted to the display device through a signal and recorded, and compared with the normal current to determine whether there is leakage, and then the clamp arm 2 is opened to detect the disconnection of the line, which is the second opening and closing of the clamp arm 2;

[0077] The process principle is as described above, however, after releasing the pull wire 44 to the clamp arm 2 and the guide rod 52, Fig.10 In the state shown, the detection is first separated from this state, so that the detection line will not be separated from the clamp arm 2 along the guide rod 52 and will not be stuck, and then continue to release the pull wire 44 to return to the initial state.

Claims

1. A low-voltage leakage locator, comprising a current clamp meter (1) and two clamp arms (2) arranged on the current clamp meter (1), characterized in that: Also includes: A telescopic rod (3) is arranged on the clamp meter (1); A power unit (4) is arranged between the clamp meter (1) and the telescopic rod (3), and is used for simultaneously opening and closing the two clamp arms (2) at an end of the telescopic rod (3) away from the clamp meter (1); The auxiliary unit (5) is arranged between the clamp meter (1) and the power unit (4) and is used to separate the clamped detection line from between the two clamp arms (2) after the detection is completed.

2. A low voltage leakage locator according to claim 1, characterized in that: The two clamp arms (2) are rotatably arranged on the clamp meter (1) via a rotating shaft (6); and The power unit (4) comprises: Two sets of first gears (41) are fixedly arranged at two ends of the rotating shaft (6) and are rotatably arranged on the clamp meter (1) through the rotating shaft (6); Two sets of second gears (42) are symmetrically and rotationally arranged on the clamp meter (1), and are respectively meshed with the two sets of first gears (41) A rack (43) is arranged between the two groups of the second gears (42) and meshes with the two groups of the second gears (42), and the rack (43) is slidably arranged on the clamp meter (1); A pull wire (44), one end of which is connected to the rack (43), and the other end of which passes through the inside of the telescopic rod (3) to an end of the telescopic rod (3) away from the clamp meter (1) and is provided with a pull ring (45); A reset member is arranged at the position of the rack (43) and is used for resetting the rack (43) after being pulled.

3. A low voltage leakage locator according to claim 2, characterized in that: The reset element comprises: A slide groove (46) is provided on the clamp meter (1) and is used for the rack (43) to slide up and down; A return spring (47) is arranged in the slide groove (46), one end of which abuts against the rack (43) and the other end of which abuts against the end of the slide groove (46).

4. A low voltage leakage locator according to claim 2, characterized in that: The auxiliary unit (5) comprises: Two groups of arc-shaped grooves (51) are arranged on both sides of the two groups of clamp meters (1); Two groups of guide rods (52), each of which is provided with a guide shaft (53), the guide rods (52) being rotatably arranged through the guide shaft (53) and the clamp meter (1), and the two groups of guide rods (52) being provided with a sliding shaft (54) at the position of the arc groove (51), one end of the sliding shaft (54) being fixed to the guide rod (52), and the other end being slidably arranged in the arc groove (51); The cooperative component (55) is arranged between the end of the guide rod (52) away from the sliding shaft (54) and the second gear (42), and is used to drive the guide rod (52) to swing periodically, so that the detected line can be smoothly separated from the two sets of clamp arms (2) after the detection is completed.

5. A low voltage leakage locator according to claim 4, characterized in that: The guide rod (52) comprises a first slide rod (521) and a second slide rod (522), wherein the first slide rod (521) and the second slide rod (522) are arranged to slide with each other so as to change the total length of the guide rod (52), an elastic member (523) is arranged between the first slide rod (521) and the second slide rod (522), and a limiting groove for sliding the first slide rod (521) is arranged on the second slide rod (522), and the elastic member (523) is an adjustment spring arranged in the limiting groove, and one end of the adjustment spring is in contact with the first slide rod (521), and the other end is in contact with the end of the limiting groove.

6. A low voltage leakage locator according to claim 4, characterized in that: The collaborative component (55) comprises: A gear shaft (551), one end of which is concentrically arranged with the second gear (42), and the other end of which penetrates the clamp meter (1) and is provided with a third gear (552); a ratchet structure (553) is provided between the gear shaft (551) and the third gear (552), and is used to drive the third gear (552) to rotate through the gear shaft (551) when the rack (43) slides downward to drive the second gear (42) to rotate, and does not drive the third gear (552) to rotate when the rack (43) is reset upward; A fourth gear (554) is meshed with the third gear (552), a rotating plate (555) is fixedly arranged on the fourth gear (554), and a rotating shaft (556) is arranged at one end of the rotating plate (555) away from the fourth gear (554); The rotation groove (557) is arranged on the guide rod (52) and is used for the rotation shaft (556) to slide therein.

7. A low voltage leakage locator according to claim 4, characterized in that: A guide plate (558) is provided at one end of the guide rod (52) close to the arc groove (51), and is used for when the guide rod (52) slides to the end where the two arc grooves (51) are close to each other, a certain distance exists between the guide rod (52) and the end of the clamp arm (2), so that the detection line can smoothly leave this position.

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