Cable short circuit detector

Abstract

The utility model discloses a cable short circuit detector. The cable short circuit detector comprises a detector box body and a detector turning cover arranged on the upper side of the detector box body, a three-phase wiring terminal is arranged on the detector box body, a current detection device is arranged on the right side of the three-phase wiring terminal, a short-circuit detection power switch is arranged on the right side of the current detection device, and a current limiting neon lamp is arranged on the front side of the short-circuit detection power switch and connected into a power supply cable to be detected in series. The to-be-detected power supply cable is analyzed, the power supply range is determined, the to-be-detected position is determined by knowing the trend of the electric equipment and the power supply cable, and the to-be-detected position of the power supply cable is measured by using the clip-on ammeter to determine the fault range, so that unnecessary cable damage is avoided; and through the overall structure of the bottom buffer connecting block, the damage to the cable short circuit detector caused by accidental falling of the cable short circuit detector when the user lifts the cable short circuit detector can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field related to cable short-circuit detectors, and specifically relates to a cable short-circuit detector. Background Art

[0002] A fault in the power supply cable for the sign light at the Wenxiang exit section of the Dijianshan Tunnel on the expressway caused the switch to trip. When five inspectors from the Gaolou Tunnel Management Station went to troubleshoot, they spent nearly two hours lifting more than 200 inspection covers and still could not find the fault point. According to the original maintenance method, they were going to cut the cable in sections to find the fault point. After discussion, after stringing a light bulb at the lower end of the switch, the switch could supply power normally. After lifting more than 10 inspection covers, they used a clamp ammeter to measure the cable section by section. The fault point was found in about half an hour. However, the cable laying on the expressway is more than 1 km, with many connections along the line and high inspection pressure. The high-speed tunnel cable fault inspection requires The problem in the cable trench can only be checked by flipping up the 40-kilogram cover. The cable cover needs to be flipped over many times for section-by-section inspection. The previous maintenance method is to shorten the cable section by section and then reclose the circuit breaker to judge the quality of the cable. This adds more hidden dangers of breakpoints. The wire inspection method generally takes more than 2 hours from inspection to maintenance. The previous maintenance method requires at least 4 people to complete. The utility model improves the above-mentioned problems and determines the place to be inspected through understanding the direction of electrical equipment and power supply cables, and uses a clamp ammeter to measure the place to be inspected of the power supply cable to determine the fault range, thereby avoiding unnecessary cable damage. Utility Model Content

[0003] The utility model aims to provide a cable short circuit detector to solve the problems in the above background technology that the original detection of cable short circuit faults has high detection pressure, high workload, potential hidden dangers in the work, long time consumption and large personnel requirements.

[0004] To achieve the above object, the utility model provides the following technical solutions: a cable short circuit detector, comprising a detector box and a detector flip cover arranged at the upper side of the detector box;

[0005] The detector box is provided with a three-phase terminal, a current detection device is provided at the right side of the three-phase terminal, a short-circuit detection power switch is provided at the right side of the current detection device, and a current-limiting neon lamp is provided at the front side of the short-circuit detection power switch, which is connected in series to the power supply cable to be detected. The power supply range is determined by analyzing the power supply cable to be detected, and the location to be detected is determined by understanding the electrical equipment and the direction of the power supply cable.

[0006] Preferably, a bottom buffer connecting block is provided at the right end position of the detector case, a buffer spring is provided at the internal position of the bottom buffer connecting block, a buffer moving block is provided at the bottom position of the buffer spring, a through-diameter groove is provided at the side position of the bottom buffer connecting block, an inclined support strip is provided at the internal position of the through-diameter groove, a limiting column is provided at the side position of the inclined support strip, and a reset spring is provided at the side position of the limiting column. When the detector case is pressed downward, the bottom buffer connecting block will use the elastic potential energy of the buffer spring to eliminate the impact force, and at the same time, the bottom buffer connecting block will squeeze the inclined support strip to make it leak out to form a triangular support with the ground.

[0007] Preferably, an extrusion card connector is provided at a side position of the bottom buffer connection block, and the extrusion card connector is composed of two blocks of different lengths.

[0008] Preferably, a tension spring is provided at the inner side of the extrusion card connector, and the extrusion card connector is installed and connected with the bottom buffer connection block by plugging and through the tension spring.

[0009] Preferably, an extruded rubber is provided on the side surface of the extruded card connector near the other end, and the extruded rubber is installed and connected to the extruded card connector by adhesive.

[0010] Preferably, a connecting handle is provided at a side position of the detector housing and the detector flip cover, and the connecting handle is installed and connected to the detector housing and the detector flip cover by screws.

[0011] Preferably, a connecting flip bar is connected between the detector housing and the detector cover, and the connecting flip bar is a flippable structure.

[0012] Compared with the prior art, the utility model provides a cable short circuit detector, which has the following beneficial effects:

[0013] 1. In the cable short-circuit detector, a three-phase terminal block is provided on the detector box, a current detection device is provided at the right side of the three-phase terminal block, a short-circuit detection power switch is provided at the right side of the current detection device, and a current-limiting neon lamp is provided at the front side of the short-circuit detection power switch, which is connected in series to the power supply cable to be detected. The power supply range is determined by analyzing the power supply cable to be detected, and the position to be detected is determined by understanding the direction of the electrical equipment and the power supply cable. A clamp ammeter is used to measure the position to be detected of the power supply cable to determine the fault range, thereby avoiding unnecessary cable damage.

[0014] 2. In the cable short-circuit detector, a bottom buffer connection block is arranged at the right end of the detector box, a buffer spring is arranged at the internal position of the bottom buffer connection block, a buffer moving block is arranged at the bottom position of the buffer spring, a diameter groove is arranged at the side position of the bottom buffer connection block, an inclined support strip is arranged at the internal position of the diameter groove, a limiting column is arranged at the side position of the inclined support strip, and a reset spring is arranged at the side position of the limiting column. When the detector box is pressed down, the bottom buffer connection block will use the elastic potential energy of the buffer spring to eliminate the impact force, and at the same time, the bottom buffer connection block will squeeze the inclined support strip to make it leak out to form a triangular support with the ground, thereby effectively avoiding damage to the user caused by accidental drop of the cable short-circuit detector when the user lifts it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of the cable short circuit detector.

[0016] Figure 2 The utility model is a schematic diagram of the structure of the buffer connection block at the bottom of the cable short circuit detector.

[0017] Figure 3 It is a right side cross-sectional structural schematic diagram of the bottom buffer connection block of the cable short circuit detector of the utility model.

[0018] Figure 4 It is a front view cross-sectional structural diagram of the bottom buffer connection block of the cable short circuit detector of the utility model.

[0019] In the figure: 1. Detector box; 2. Detector cover; 3. Connection handle; 4. Connection flip bar; 5. Short circuit detection power switch; 6. Current detection device; 7. Current limiting neon lamp; 8. Three-phase terminal; 9. Bottom buffer connection block; 10. Extrusion card plate; 11. Extrusion rubber; 12. Buffer moving block; 13. Through-diameter groove; 14. Tension spring; 15. Buffer spring; 16. Oblique support bar; 17. Reset spring; 18. Limit column. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figure 1-4As shown, a cable short-circuit detector comprises a detector housing 1 and a detector flap 2 arranged at the upper side of the detector housing 1; a three-phase terminal 8 is arranged on the detector housing 1, a current detection device 6 is arranged at the right side of the three-phase terminal 8, a short-circuit detection power switch 5 is arranged at the right side of the current detection device 6, a current-limiting neon lamp 7 is arranged at the front side of the short-circuit detection power switch 5, and is connected in series to the power supply cable to be detected. The power supply range is determined by analyzing the power supply cable to be detected, the position to be detected is determined by understanding the direction of the electrical equipment and the power supply cable, and a clamp ammeter is used to measure the position to be detected of the power supply cable to determine the fault range, thereby avoiding unnecessary cable damage.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, a bottom buffer connecting block 9 is arranged at the right end position of the detector case 1, a buffer spring 15 is arranged at the internal position of the bottom buffer connecting block 9, a buffer moving block 12 is arranged at the bottom position of the buffer spring 15, a through-diameter groove 13 is arranged at the side position of the bottom buffer connecting block 9, an oblique support strip 16 is arranged at the internal position of the through-diameter groove 13, a limiting column 18 is arranged at the side position of the oblique support strip 16, and a reset spring 17 is arranged at the side position of the limiting column 18. When the detector case 1 is pressed down, the bottom buffer connecting block 9 will use the elastic potential energy of the buffer spring 15 to eliminate the impact force, and at the same time, the bottom buffer connecting block 9 will squeeze the oblique support strip 16 to make it leak out to form a triangular support with the ground, thereby effectively avoiding damage to the cable short-circuit detector caused by the user accidentally dropping it when lifting it.

[0023] like Figure 2 As shown, an extrusion card connector 10 is arranged at the side position of the bottom buffer connecting block 9. The extrusion card connector 10 is composed of two blocks of different lengths. A tension spring 14 is arranged at the inner side of the extrusion card connector 10. The extrusion card connector 10 is installed and connected with the bottom buffer connecting block 9 by plugging and through the tension spring 14. The tension of the extrusion card connector 10 by the tension spring 14 can better enable the bottom buffer connecting block 9 to be installed and connected with the detector box 1.

[0024] like Figure 2 As shown, an extruded rubber 11 is provided on the side of the extruded card connector 10 near the other end. The extruded rubber 11 is installed and connected to the extruded card connector 10 by adhesive. The extruded rubber 11 can increase the contact friction between the extruded card connector 10 and the detector housing 1, thereby making the installation connection more stable.

[0025] like Figure 1As shown, a connecting handle 3 is provided at the side of the detector case 1 and the detector flip cover 2. The connecting handle 3 is installed and connected to the detector case 1 and the detector flip cover 2 by screws. The setting of the connecting handle 3 is convenient for users to carry.

[0026] like Figure 1 As shown, a connecting flip bar 4 is connected between the detector case 1 and the detector flip cover 2. The connecting flip bar 4 is a flippable structure. The setting of the connecting flip bar 4 can enable the detector case 1 and the detector flip cover 2 to maintain a certain angle, thereby facilitating user operation.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable short circuit detector, comprising: A detector box (1) and a detector flip cover (2) arranged at the upper side of the detector box (1); Features: The detector housing (1) is provided with a three-phase terminal block (8), a current detection device (6) is provided at the right side of the three-phase terminal block (8), a short-circuit detection power switch (5) is provided at the right side of the current detection device (6), and a current-limiting neon lamp (7) is provided at the front side of the short-circuit detection power switch (5) and connected in series to the power supply cable to be detected. The power supply range is determined by analyzing the power supply cable to be detected, and the location to be detected is determined by understanding the direction of the power-consuming equipment and the power supply cable.

2. A cable short circuit detector according to claim 1, characterized in that: A bottom buffer connection block (9) is arranged at the right end of the detector housing (1), a buffer spring (15) is arranged at the inner position of the bottom buffer connection block (9), a buffer moving block (12) is arranged at the bottom position of the buffer spring (15), a diameter groove (13) is arranged at the side position of the bottom buffer connection block (9), an oblique support strip block (16) is arranged at the inner position of the diameter groove (13), a limiting column (18) is arranged at the side position of the oblique support strip block (16), and a reset spring (17) is arranged at the side position of the limiting column (18). When the detector housing (1) is pressed down, the bottom buffer connection block (9) will use the elastic potential energy of the buffer spring (15) to eliminate the impact force, and at the same time, the bottom buffer connection block (9) will squeeze the oblique support strip block (16) to make it leak out to form a triangular support with the ground.

3. A cable short circuit detector according to claim 2, characterized in that: An extrusion card connecting piece (10) is arranged at the side of the bottom buffer connecting block (9), and the extrusion card connecting piece (10) is composed of two blocks of different lengths.

4. A cable short circuit detector according to claim 3, characterized in that: A tension spring (14) is provided at the inner side of the extrusion card connector (10), and the extrusion card connector (10) is installed and connected with the bottom buffer connection block (9) by plugging and through the tension spring (14).

5. A cable short circuit detector according to claim 4, characterized in that: An extruded rubber (11) is provided on the side surface of the extruded card connector (10) near the other end, and the extruded rubber (11) is installed and connected to the extruded card connector (10) by means of adhesive.

6. A cable short circuit detector according to claim 1, characterized in that: A connecting handle (3) is provided at the side of the detector box (1) and the detector flip cover (2), and the connecting handle (3) is installed and connected to the detector box (1) and the detector flip cover (2) by means of screws.

7. A cable short circuit detector according to claim 1, characterized in that: A connecting flip bar (4) is connected between the detector box body (1) and the detector flip cover (2), and the connecting flip bar (4) is a flippable structure.

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