Cable fault positioning instrument
By designing the attachment mechanism in the headphones of the cable fault fixing instrument, including chunks, rings, silicone rings, elastic parts, square grooves and large suction cups, the problem of insufficient fit and stability of the headphones in the field environment is solved, and higher accuracy of cable fault fixing points is achieved.
Patent Information
- Application Number
- CN202421587913.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-05
AI Technical Summary
When used in outdoor environments, the headphones and staff faces are low in fit and stability, and are easily affected by staff actions, resulting in inaccurate judgment on cable faults.
A cable fault pointing instrument is designed, using an attachment mechanism, including a chunk, ring, silicone ring, elastic parts, square grooves and large suction cups. Through the cooperation of these components, the headphones can be fit more stably on the side face of the staff, reducing displacement caused by the staff's actions.
It realizes a stable fit of the headphones on the staff's side face, improves the accuracy of fixed points of cable faults, reduces misjudgment, and improves measurement accuracy.
Smart Images
Figure CN222825626U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring equipment, in particular to a cable fault locating instrument. Background Art
[0002] The installation of circuits requires the laying of cables, and the stable operation of circuits requires the normal operation of cables. In the field, cables are prone to failures due to various problems and need to be checked in a timely manner. However, due to the long length of cables, it is difficult to check the fault points, and instruments are needed to carry out troubleshooting.
[0003] The existing cable fault locating instrument is usually implemented with the help of a high-voltage shock generator. The high-voltage shock generator is used to impact the cable, causing the cable to generate shock waves to detect the cable fault distance. However, the existing shock wave sensing equipment is wired to the headphones worn by the staff. The field environment is complex, and the sensor connection line is prone to produce noise when it touches the headphone, causing the staff to make misjudgments. The wireless headphones have low fit and stability to the staff's face, and are easily affected by the staff's actions and cause friction with the staff's face, thereby affecting the fixed-point judgment of the cable fault. In view of this, we propose a cable fault locating instrument. Utility Model Content
[0004] The utility model aims to provide a cable fault locating instrument to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a cable fault locator, comprising a locator body and an earphone, the top of the earphone is fixedly connected to a connecting frame, an attachment mechanism is arranged inside the earphone, and the attachment mechanism comprises:
[0006] A pressing block is slidably mounted on the side wall of the earphone, a circular ring is fixedly connected to the side wall of the pressing block through an arc-shaped connecting block, a silicone ring is fixedly mounted on the outer wall of the earphone away from the pressing block, and an elastic member is fixedly connected between the circular ring and the inner wall of the earphone;
[0007] A square groove is provided on the inner wall of the silicone ring, an inner groove is provided on the outer wall of the silicone ring away from the earphone, one end of the support rod is hinged to the side wall of the circular ring, a push plate is hinged to the other end of the support rod, and a large suction cup is fixedly connected to the end of the push plate.
[0008] Preferably, the inner wall of the earphone is provided with an arc groove adapted to the arc-shaped connecting block between the pressing block and the circular ring, and the number of the arc grooves is set to four groups, and the four groups of arc grooves are evenly distributed on the inner wall of the earphone in a circular array to ensure the stability between the pressing block and the earphone.
[0009] Preferably, the elastic member is composed of a spring and a telescopic rod, and the spring is sleeved on the outside of the telescopic rod to ensure stable transmission of the ring by the elastic member.
[0010] Preferably, the number of the square grooves and the push plates is arranged in several groups, and the several groups of square grooves and the push plates are evenly distributed in a circular array, the square grooves are adapted to the push plates, and the square grooves are inclined away from the center of the silicone ring, and the inclination angles of two adjacent groups of square grooves are different.
[0011] Preferably, a cylindrical groove is provided on the inner wall of the end of the push plate, a transmission column is movably provided on the inner wall of the cylindrical groove, a small suction cup is fixedly connected to the end of the transmission column, a spiral groove is provided on the inner wall of the cylindrical groove, a spiral chute is provided on the arc-shaped outer wall of the transmission column, and a ball is provided inside the spiral chute.
[0012] Preferably, the spiral groove and the spiral chute have the same shape, and the balls are in both the spiral chute and the spiral groove, so that the transmission column rotates under the influence of the balls and the spiral groove.
[0013] Compared with the prior art, the utility model provides a cable fault locator, which has the following beneficial effects:
[0014] 1. The cable fault locating instrument is provided with an attachment mechanism. When the earphone is worn, the pressure block is pressed, and the push plate is pushed by the ring and the support rod, so that the push plate slides along the inclined square groove to one side of the inner groove. Since the inclination angles of the two adjacent groups of square grooves are different, the large suction cup is arranged in an irregular circular array, so that the earphone can be more stably attached to the side face of the staff, and will not be shifted due to the actions of the staff, thereby ensuring the accuracy of the staff's monitoring, so as to better complete the work of locating the cable fault.
[0015] 2. The cable fault locator has a cylindrical groove at the end of the push plate, which cooperates with a transmission column movably arranged in the cylindrical groove. Under the influence of the ball and the spiral groove, after the small suction cup contacts the side face of the staff, the transmission column will be prompted to rotate, and then the small suction cup will rotate slightly on the staff's face until the small suction cup is close to the staff's face. After that, the transmission column still slides toward one side of the cylindrical groove in cooperation with the setting of the spiral chute, so that the earphone can be kept stable on the side face of the staff in cooperation with the large suction cup, thereby providing a stable monitoring environment and improving the measurement accuracy of the cable fault locator. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the main body of the utility model fixed-point instrument;
[0017] Figure 2 This is a schematic diagram of the structure of the earphone of the utility model;
[0018] Figure 3 This is a schematic diagram of the side structure of the earphone of the utility model;
[0019] Figure 4 This is a schematic diagram of the partial explosion structure of the earphone of the utility model;
[0020] Figure 5 This is a schematic diagram of the push plate and large suction cup structure of the utility model;
[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the push plate and the large suction cup of the utility model.
[0022] In the figure: 1. Pointing instrument body; 2. Earphone; 3. Connecting frame; 4. Pressure block; 5. Silicone ring; 6. Round ring; 7. Elastic part; 8. Square groove; 9. Inner groove; 10. Support rod; 11. Push plate; 12. Large suction cup; 13. Cylindrical groove; 14. Transmission column; 15. Small suction cup; 16. Spiral groove; 17. Spiral chute; 18. Ball. DETAILED DESCRIPTION
[0023] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a cable fault locating instrument, comprising a locating instrument body 1 and an earphone 2, the top of the earphone 2 is fixedly connected with a connecting frame 3, the interior of the earphone 2 is provided with an attaching mechanism, and the attaching mechanism includes a pressing block 4, a circular ring 6, a silicone ring 5, an elastic member 7, a square groove 8, an inner groove 9, a support rod 10, a push plate 11 and a large suction cup 12.
[0024] In one embodiment of the utility model, a pressure block 4 is slidably installed on the side wall of the earphone 2, and a circular ring 6 is fixedly connected to the side wall of the pressure block 4 through an arc-shaped connecting block. A silicone ring 5 is fixedly installed on the outer wall of the earphone 2 away from the pressure block 4, and an elastic member 7 is fixedly connected between the circular ring 6 and the inner wall of the earphone 2. A square groove 8 is provided on the inner wall of the silicone ring 5, and an inner groove 9 is provided on the outer wall of the silicone ring 5 away from the earphone 2. The side wall of the circular ring 6 is hinged to one end of a support rod 10, and the other end of the support rod 10 is hinged to a push plate 11, and the end of the push plate 11 is fixedly connected to a large suction cup 12.
[0025] Furthermore, the interior of the positioning instrument body 1 is provided with five parts, namely, an electromagnetic wave sensor, an acoustic wave vibration sensor, a data processor, an LED distance display and an audio amplifier, and the interior of the positioning instrument body 1 is provided with a built-in power supply to power the above-mentioned devices. Specifically, when performing impact high-voltage discharge positioning, the electromagnetic sensor receives the electromagnetic wave radiated by the cable and sends it to the data processor. After amplification and shaping, the internal distance conversion circuit is started. When the sound pickup sensor receives the seismic wave of the fault point transmitted from the underground, it is also sent to the data processor for amplification and shaping, and a counting interrupt signal is generated, so that the distance display displays the final processing result, that is, the fault distance number, and freezes the displayed number at the same time to facilitate stable observation by the staff. The above process is repeated during the second impact discharge and the last displayed data is refreshed. Since the propagation speed of electromagnetic waves is extremely fast, much higher than the propagation speed of surface acoustic waves, the propagation time difference between the electromagnetic waves and the acoustic waves is calculated using a pre-set common time, and finally the fault distance is converted by the data processing circuit, thereby facilitating the staff to realize the fixed-point judgment of the cable fault.
[0026] In addition, the earphones 2 are provided in two groups, and the two groups of earphones 2 are mirror-imaged at the two ends of the connecting frame 3, and the connecting frame 3 is made of elastic material to facilitate positioning of the earphones 2 on the head of the staff. At the same time, the interior of the earphones 2 and the interior of the pointing instrument body 1 are provided with Bluetooth modules to facilitate wireless data connection between the earphones 2 and the pointing instrument body 1. Furthermore, the inner wall of the earphones 2 is provided with an arc groove that is compatible with the arc-shaped connecting block between the pressing block 4 and the ring 6, and the number of the arc grooves is provided with four groups, and the four groups of arc grooves are evenly distributed on the inner wall of the earphones 2 in a circular array to ensure that the pressing block 4 and the earphones are connected to each other. The stability between the machines 2, specifically, the elastic member 7 is composed of a spring and a telescopic rod, and the spring is sleeved on the outside of the telescopic rod to ensure the stable transmission of the elastic member 7 to the ring 6, and avoid the spring from being deflected in the vertical direction under the influence of gravity. At the same time, the inner wall of the earphone 2 is provided with a notch adapted to the silicone ring 5. At the same time, due to the setting of the silicone ring 5, the irritation of the earphone 2 to the face of the staff is reduced, thereby improving the comfort of the staff. The square groove 8 is adapted to the push plate 11, and the square groove 8 is inclined away from the center of the silicone ring 5, and the inclination angles of the two adjacent groups of square grooves 8 are different.
[0027] At the same time, the number of the square grooves 8 and the push plates 11 is arranged in several groups, and the several groups of square grooves 8 and push plates 11 are evenly distributed in a circular array. Specifically, the square grooves 8 are in the inner groove 9, so that the push plates 11 will not exceed the outer surface of the silicone ring 5 when extended, so as to avoid excessive stimulation to the face of the staff when the device is in use. Specifically, when the earphone 2 is worn, the staff presses the side pressure block 4 toward one side of the earphone 2, so that the pressure block 4 pushes the circular ring 6 to move toward the side of the silicone ring 5. At this time, due to the push of the push plate 11 by the support rod 10, the push plate 11 slides along the inclined square groove 8 toward the inner groove 9, and due to the different inclination angles of the two adjacent groups of square grooves 8, the large suction cup 12 is arranged in an irregular circular array, so that the earphone 2 can fit more stably on the side face of the staff, and will not be displaced due to the actions of the staff, thereby ensuring the accuracy of the staff's monitoring and better completing the fixed-point work of the cable fault.
[0028] In an embodiment of the utility model, a cylindrical groove 13 is provided on the inner wall of the end of the push plate 11, a transmission column 14 is movably provided on the inner wall of the cylindrical groove 13, a small suction cup 15 is fixedly connected to the end of the transmission column 14, a spiral groove 16 is provided on the inner wall of the cylindrical groove 13, a spiral chute 17 is provided on the arc-shaped outer wall of the transmission column 14, and a ball 18 is provided inside the spiral chute 17.
[0029] Specifically, the inner diameter of the cylindrical groove 13 is matched with the outer diameter of the transmission column 14, and the spiral groove 16 has the same shape as the spiral chute 17, and the ball 18 is in both the spiral chute 17 and the spiral groove 16, so that when the push plate 11 moves toward the side of the staff's face, the small suction cup 15 contacts the staff's face in advance and pushes the transmission column 14 toward the cylindrical groove 13. Affected by the ball 18 and the spiral groove 16, the transmission column 14 rotates, and the small suction cup 15 rotates slightly on the staff's face until the small suction cup 15 is close to the staff's face. Then, in conjunction with the setting of the spiral chute 17, the transmission column 14 still slides toward the cylindrical groove 13, thereby cooperating with the large suction cup 12 to keep the earphone 2 stable on the side of the staff's face, thereby providing a stable monitoring environment and improving the measurement accuracy of the cable fault locator.
[0030] In the utility model, when using, when using the high-voltage generator in the fixed-point instrument body 1 to make a high-voltage impact on the faulty cable, the impact high-voltage amplitude must be high enough to ensure that the fault point is fully broken down and discharged, and the discharge frequency is controlled to discharge once every 3-5 seconds. The vibration sensor probe is placed on the cable path or above the faulty cable body, connected to the acoustic-magnetic synchronous detector, and the "acoustic-magnetic fixed-point" gear is selected; when just starting to find the fault, first adjust the fixed-point gain appropriately, monitor the acoustic-magnetic waves through the earphone 2, observe the display screen of the acoustic-magnetic synchronous fixed-point instrument, and judge the distance of the fault by observing the strength of the magnetic signal. ; When no acoustic and magnetic waves are heard, the distance display screen counts and refreshes each time an impact discharge occurs, and the sensor probe is continuously moved along the path above the cable until the sound of the fault point is heard; when the sound of the seismic wave heard is strong enough, the discharge duration is about 30ms, and the fault point display is only about 10m, the fault point should be nearby, and the fixed-point gain should be appropriately reduced. When the gain is adjusted to the minimum, the acoustic wave waveform is the largest, a dull "pop" sound is heard, the time is the shortest, and the fault distance display is the smallest, then the sensor probe can be directly placed at the corresponding location according to the distance number; at this location Move the probe back and forth to find the point where the digital display value is the smallest. This is the precise location of the fault. When you are far away from the fault point, if you see the waveform diagram below, the waveform amplitude is small. If you listen carefully, you can sometimes hear very faint popping sounds along the entire length of the cable, and it will not change with the position of the sensor. This is the vibration caused by the stress generated by the high-voltage flashover impact on the cable. It is very different from the real fault discharge sound. Be careful not to misjudge. Before measuring, the staff will connect the headset 2 to the fixed-point instrument body 1 through Bluetooth wireless connection in advance, and then wear the headset 2 and face it. One side of the earphone 2 pushes the pressing block 4, so that the pressing block 4 pushes the circular ring 6 to move toward the side of the silicone ring 5. At this time, due to the push of the support rod 10 on the pushing plate 11, the pushing plate 11 slides along the inclined square groove 8 toward the side of the inner groove 9, and because the inclination angles of the two adjacent groups of square grooves 8 are different, the large suction cup 12 is arranged in an irregular circular array, so that the earphone 2 can fit more stably on the side face of the staff, and will not be displaced due to the actions of the staff, thereby ensuring the accuracy of the staff's monitoring and better completing the fixed-point work of the cable fault.
[0031] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A cable fault locator, comprising a locator body (1) and an earphone (2), wherein the top of the earphone (2) is fixedly connected to a connecting frame (3), characterized in that: An attachment mechanism is provided inside the earphone (2), and the attachment mechanism comprises: A pressing block (4), the side wall of the earphone (2) is slidably mounted with the pressing block (4), the side wall of the pressing block (4) is fixedly connected to a circular ring (6) via an arc-shaped connecting block, a silicone ring (5) is fixedly mounted on the outer wall of the earphone (2) away from the pressing block (4), and an elastic member (7) is fixedly connected between the circular ring (6) and the inner wall of the earphone (2); A square groove (8) is provided on the inner wall of the silicone ring (5), an inner groove (9) is provided on the outer wall of the silicone ring (5) away from the earphone (2), one end of a support rod (10) is hingedly connected to the side wall of the circular ring (6), the other end of the support rod (10) is hingedly connected to a push plate (11), and a large suction cup (12) is fixedly connected to the end of the push plate (11).
2. A cable fault locator according to claim 1, characterized in that: The inner wall of the earphone (2) is provided with an arc-shaped groove adapted to the arc-shaped connecting block between the pressing block (4) and the circular ring (6), and the number of the arc-shaped grooves is four groups, and the four groups of arc-shaped grooves are evenly distributed on the inner wall of the earphone (2) in a circular array.
3. A cable fault locator according to claim 1, characterized in that: The elastic member (7) is formed by combining a spring and a telescopic rod, and the spring is sleeved on the outside of the telescopic rod.
4. A cable fault locator according to claim 1, characterized in that: The number of the square grooves (8) and the push plates (11) is set in a plurality of groups, and the plurality of groups of square grooves (8) and the push plates (11) are evenly distributed in a circular array, the square grooves (8) are adapted to the push plates (11), and the square grooves (8) are inclined away from the center of the silicone ring (5), and the inclination angles of two adjacent groups of square grooves (8) are different.
5. A cable fault locator according to claim 1, characterized in that: A cylindrical groove (13) is provided on the inner wall of the end of the push plate (11); a transmission column (14) is movably provided on the inner wall of the cylindrical groove (13); a small suction cup (15) is fixedly connected to the end of the transmission column (14); a spiral groove (16) is provided on the inner wall of the cylindrical groove (13); a spiral chute (17) is provided on the arc-shaped outer wall of the transmission column (14); and a ball (18) is provided inside the spiral chute (17).
6. A cable fault locating instrument according to claim 5, characterized in that: The spiral groove (16) and the spiral chute (17) have the same shape, and the ball (18) is located in both the spiral chute (17) and the spiral groove (16).