Large-depth cable detector based on weak signal detection

Abstract

The invention discloses a large-depth cable detector based on weak signal detection, which relates to the technical field of cable detection and comprises a detector main body, a moving mechanism, a connecting block, a folding mechanism and a protection mechanism. The moving mechanism is located on the outer wall of the detector body and comprises a fixing block and a rotating wheel, and the rotating wheel is provided with multiple rollers and connected with the fixing block through a buffer assembly. The connecting block is hinged to the outer wall of the top end of the detector body and provided with a handle and a display screen. The folding mechanism is used for locking the connection between the connecting block and the main body. The protection mechanism can cover the display screen, and dustproof and anti-reflection effects are provided. The detector has good adaptability and stability under different road surfaces, the influence of vibration on internal elements is reduced through the buffer assembly, and the data accuracy is ensured. The hinged design of the connecting blocks facilitates transportation and carrying, the protection mechanism protects the display screen, and the operation convenience is improved.

Description

Technical Field

[0001] This application relates to the technical field of cable detection, and particularly to a large-depth cable detector based on weak signal detection. Background Art

[0002] In the construction of modern urban infrastructure, the laying and maintenance of underground cables are of crucial importance. With the expansion of urban scale and the complexity of underground space, higher requirements are put forward for the precise positioning and trend detection of underground cables. Traditional cable detection technologies are often limited by detection depth and signal attenuation problems, making it difficult to meet the growing detection needs. The emergence of weak signal detection technology provides a possibility to solve this problem.

[0003] A large-depth cable detector driven by weak signal detection technology is a detection device integrating advanced signal processing algorithms and high-sensitivity sensors. It can effectively capture and analyze weak electromagnetic signals, thereby realizing the precise detection of the position and trend of cables at depths of 5 to 30 meters, or even more than 30 meters underground (large depth refers to positions 5 to 30 meters, or even more than 30 meters underground). The application of this technology greatly improves the accuracy and efficiency of cable detection, providing strong technical support for the maintenance and management of underground cables.

[0004] However, in practical applications, operators face some challenges when using cable detectors. Traditional cable detectors usually require operators to hold the device and slowly move along the potential cable path, and judge the specific position of the cable through the signal strength indication, audio prompt or screen display of the receiver. Prolonged use will cause the muscles of the operator's arms and wrists to remain tense, resulting in fatigue, which to a certain extent affects the use efficiency and detection accuracy.

[0005] In addition, although some detectors are equipped with rollers to move on the ground to reduce hand fatigue, the vibration generated when moving on rough roads may affect the precision components inside the device, thereby reducing the service life of the device. Vibration may not only damage sensors and circuit boards, but also affect the stable reception and processing of signals, and further affect the accuracy of detection results.

[0006] Therefore, while existing cable detectors improve detection efficiency and accuracy, they also bring problems of operation comfort and device durability. To solve these problems, there is an urgent need to develop a new type of cable detector that can not only provide high-precision detection results, but also has good operation comfort and device durability to adapt to various complex working environments. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a large-depth cable detector based on weak signal detection, which can not only provide high-precision detection results, but also has good operation comfort and equipment durability to adapt to various complex working environments.

[0008] To achieve the above technical objectives, this application provides a large-depth cable detector based on weak signal detection, including a detector main body, a moving mechanism, a connecting block, a folding mechanism, and a protection mechanism;

[0009] The moving mechanism is arranged on the outer wall of the detector main body and includes a fixed block;

[0010] A runner is rotatably connected inside the fixed block;

[0011] At least three rollers are circumferentially arranged around the runner;

[0012] Each of the rollers is connected to the runner through a buffer assembly;

[0013] The connecting block is hinged to the top outer wall of the detector main body;

[0014] A handle is fixedly connected to the outer wall of the connecting block;

[0015] The folding mechanism is respectively connected to the connecting block and the detector main body for locking the connection between the connecting block and the detector main body;

[0016] A handle is fixedly connected to the outer wall of the connecting block, and a display screen is fixedly connected to the top outer wall of the connecting block;

[0017] The protection mechanism is installed on the display screen for covering the display screen.

[0018] Further, the fixed block is in an inverted U shape and is symmetrically and fixedly connected to the outer walls on both sides of the detector main body.

[0019] Further, a fixed rod is rotatably connected to the inner wall of the runner;

[0020] A moving rod is slidably connected to the inner wall of the fixed rod;

[0021] A clamping block is elastically connected to the inner wall of the moving rod through a connecting spring;

[0022] A limit ring is fixedly connected to the outer wall of the fixed block;

[0023] A card slot is formed on the outer wall of the limit ring;

[0024] The fixed rod penetrates through the fixed block and is rotatably connected to the fixed block;

[0025] The clamping block can be clamped with the card slot.

[0026] Further, one end of the connecting spring is fixedly connected to the outer wall of the clamping block;

[0027] The other end of the connecting spring is fixedly connected to the inner wall of the moving rod;

[0028] The clamping block is slidably connected to the inner wall of the moving rod;

[0029] The moving rod penetrates through the outer wall of the fixed block.

[0030] Further, the buffer assembly includes a buffer block;

[0031] A rubber pad is elastically connected to the inner wall of the buffer block through a buffer spring;

[0032] The rubber pad is fixedly connected to one end of the wheel frame where the roller extends into the buffer block;

[0033] The rotating wheel is detachably and fixedly connected to the buffer block;

[0034] One end of the buffer spring is fixedly connected to the outer wall of the rubber pad;

[0035] The other end of the buffer spring is fixedly connected to the inner wall of the buffer block.

[0036] Further, the folding mechanism includes a sliding rod;

[0037] A rotating block is rotatably connected to the outer wall of the sliding rod;

[0038] The sliding rod is elastically connected in the inner wall of the detector main body through a return spring;

[0039] A telescopic block is fixedly connected to the inner wall of the rotating block;

[0040] An insertion block is fixedly connected to the outer wall of the telescopic block;

[0041] A slot for clamping the insertion block is formed on the outer wall of the connection block.

[0042] Further, one end of the return spring is fixedly connected to the outer wall of the sliding rod;

[0043] The other end of the return spring is fixedly connected to the inner wall of the detector main body.

[0044] Further, the protection mechanism includes a mounting block;

[0045] A rotating shaft is rotatably connected to the inner wall of the mounting block;

[0046] Cover plates are fixedly connected to both ends of the rotating shaft;

[0047] The cover plate is used to cover the display screen.

[0048] Furthermore, the inner wall of the mounting block is elastically connected to a pull rod via a telescopic spring;

[0049] The outer wall of the rotating shaft is provided with a groove;

[0050] The pull rod is slidably connected to the inner wall of the mounting block;

[0051] The pull rod can be engaged with the groove.

[0052] Furthermore, one end of the telescopic spring is fixedly connected to the outer wall of the pull rod;

[0053] The other end of the telescopic spring is fixedly connected to the inner wall of the mounting block.

[0054] From the above technical solutions, it can be seen that the deep-depth cable detector based on weak signal detection designed in this application has the following beneficial effects:

[0055] 1. The moving mechanism constructed by the combination of the rotating wheel and the roller and the handle allows the rotating wheel to remain fixed when the detector is moved on a flat road. The two sets of rollers are in contact with the ground, so that the detector body can be pushed more stably and effortlessly for cable detection. When used on bumpy roads, the rotating wheel can be released and the three sets of rollers can contact the ground in turn to maintain relatively stable movement, reduce the bumps and shaking caused by uneven ground, and improve the adaptability of the device on different road surfaces.

[0056] 2. By designing the buffer component, when moving on bumpy roads, the buffer component can play a better buffering effect, reduce the vibration amplitude caused by uneven road surface, reduce the impact of vibration on the internal components of the detector body, and ensure the accuracy of detection data.

[0057] 3. The hinged connection block is equipped with a folding mechanism. When not in use, the folding mechanism can be operated to release the connection block from the detector body, and the connection block can be turned over. The folding mechanism can be operated again to fix the connection block to the detector body, thereby reducing the occupied space and making it easier to transport and carry.

[0058] 4. By designing a protective mechanism, the display screen can be protected from dust and the problem of light reflecting on the display screen affecting the operator's reading of data can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0060] Figure 1 It is a schematic diagram of the main structure of a large-depth cable detector based on weak signal detection provided in the present application;

[0061] Figure 2 It is a schematic diagram of the folding mechanism and the moving mechanism of a large-depth cable detector based on weak signal detection provided in the present application;

[0062] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixed block of a large-depth cable detector based on weak signal detection provided in the present application;

[0063] Figure 4 It is a schematic diagram of the decomposed structure of the fixed block, the runner, and the buffer block in cross-section of a large-depth cable detector based on weak signal detection provided in the present application;

[0064] Figure 5 It is a schematic diagram of the decomposed structure of the cross-section of the detector main body and the connecting block of a large-depth cable detector based on weak signal detection provided in the present application;

[0065] Figure 6 It is a schematic diagram of the decomposed structure of the cover plate and the mounting block of a large-depth cable detector based on weak signal detection provided in the present application;

[0066] In the figure: 1. Detector main body; 2. Moving mechanism; 201. Fixed block; 202. Runner; 203. Roller; 204. Moving rod; 205. Limiting ring; 206. Card slot; 207. Buffer block; 208. Rubber pad; 209. Buffer spring; 210. Fixed rod; 211. Connecting spring; 212. Clamping block; 3. Folding mechanism; 301. Reset spring; 302. Slide rod; 303. Rotating block; 304. Telescopic block; 305. Insert block; 306. Insert slot; 4. Protection mechanism; 401. Mounting block; 402. Telescopic spring; 403. Pull rod; 404. Rotating shaft; 405. Groove; 406. Cover plate; 5. Display screen; 6. Connecting block; 7. Handle. Detailed implementation manners

[0067] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the embodiments of the present application.

[0068] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0069] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0070] The embodiments of the present application disclose a large-depth cable detector based on weak signal detection.

[0071] Please refer to Figures 1 to 6 , an embodiment of a large-depth cable detector based on weak signal detection provided in the embodiments of the present application includes:

[0072] A detector main body 1, a moving mechanism 2, a connecting block 6, a folding mechanism 3, and a protection mechanism 4.

[0073] The moving mechanism 2 is arranged on the outer wall of the detector main body 1 and includes a fixed block 201; a runner 202 is rotatably connected inside the fixed block 201; at least three rollers 203 are circumferentially arranged around the runner 202; each roller 203 is connected to the runner 202 through a buffer assembly.

[0074] The connecting block 6 is hinged to the outer wall of the top of the detector body 1; a handle 7 is fixedly connected to the outer wall of the connecting block 6; the folding mechanism 3 is respectively connected to the connecting block 6 and the detector body 1 for locking the connection between the connecting block 6 and the detector body 1; a handle 7 is fixedly connected to the outer wall of the connecting block 6, and a display screen 5 is fixedly connected to the outer wall of the top of the connecting block 6.

[0075] The protection mechanism 4 is installed on the display screen 5 and can cover the display screen 5, including an installation block 401. The installation block 401 is fixed to one side of the display area on the top of the display screen 5, and a rotating shaft 404 is rotatably connected to the inner wall of the installation block 401. A cover plate 406 is fixedly connected to the outer wall of the rotating shaft 404.

[0076] In the above design, the detector body 1 is a large-depth cable detector based on weak signal detection, which is a prior art. An alternating current signal is sent to the ground through an internal transmitter, so that the cable generates an induced current and an alternating magnetic field. The receiver uses a sensor to collect the weak magnetic field signal after long-distance propagation and medium attenuation, and then amplifies and filters it, fuses various characteristic information, and combines an algorithm software to calculate the position and depth of the cable. At the same time, with multiple measurements and calibrations, accurate detection of large-depth cables is achieved.

[0077] The detected data will be presented on the display screen 5 for easy reading by the operator. The protection mechanism 4 can protect the display screen 5 and prevent dust from entering. When the device is not in use, the cover plate 406 can be closed to prevent dust; when in use, the operator can open the cover plate 406 and adjust its angle according to the surrounding light to reduce screen reflection and improve the visibility of the display screen 5. The design of the moving mechanism 2 allows the operator to easily push the detector body 1 to move on the ground, avoiding the fatigue of detecting for a long time by holding the handle 7, and its built-in buffer component can reduce the vibration of the detector body 1 on rough terrain, ensuring the accuracy of the detected data and the integrity of the device. In addition, the folding mechanism 3 enables the entire device to be easily folded, as Figure 2 shown, greatly reducing the space required for carrying and improving portability.

[0078] The above is Embodiment 1 of a large-depth cable detector based on weak signal detection provided by this application. The following is Embodiment 2 of a large-depth cable detector based on weak signal detection provided by this application. For details, please refer to Figures 1 to 6 .

[0079] Based on the solution of the above Embodiment 1:

[0080] Further, as Figure 3 and Figure 4 shown, the fixing block 201 is in an inverted U shape and is symmetrically fixedly connected to the outer walls on both sides of the detector body 1.

[0081] The inner wall of the rotating wheel 202 is rotatably connected to the fixed rod 210; the inner wall of the fixed rod 210 is slidably connected to the moving rod 204; the inner wall of the moving rod 204 is elastically connected to the clamping block 212 via the connecting spring 211; the outer wall of the fixed block 201 is fixedly connected to the limiting ring 205; the outer wall of the limiting ring 205 is provided with a clamping groove 206.

[0082] In the above design, both the fixed rod 210 and the movable rod 204 pass through the outer wall of the fixed block 201, the fixed rod 210 is fixed in the inner wall of the rotating wheel 202, and the movable rod 204 can only move laterally in the inner wall of the fixed rod 210 and cannot rotate independently; the buffer assembly and the roller 203 are provided with three groups, and when moving on a flat ground, two groups of rollers 203 can be made to contact the ground, and when the operator holds the handle 7 to move the detector body 1, the roller 203 will rotate, which is more labor-saving; the movable rod 204, the fixed rod 210 and the movable rod 204 are fixed by the engagement of the card slot 206 on the limit ring 205 with the card block 212. When the measuring instrument body 1 moves, the two sets of rollers 203 are kept in contact with the ground. When the road surface is relatively bumpy and uneven, the operator can release the limit of the moving rod 204 and the limiting ring 205, so that the moving rod 204, the fixed rod 210 and the rotating wheel 202 can rotate within the inner wall of the fixed block 201. When moving in this state, the three sets of rollers 203 can contact the ground in turn, so that it can better fit the ground of various shapes. Even if it encounters large protrusions or depressions, it can maintain relatively stable movement through the alternating contact of the rollers 203, reducing the bumps and shaking caused by uneven ground, thereby improving the instrument's ability to pass through complex terrain.

[0083] The fixed rod 210 passes through the fixed block 201 and is rotatably connected to the fixed block 201. The clamping block 212 is engaged with the clamping slot 206. One end of the connecting spring 211 is fixedly connected to the outer wall of the clamping block 212. The other end of the connecting spring 211 is fixedly connected to the inner wall of the movable rod 204. The clamping block 212 is slidably connected to the inner wall of the movable rod 204. The movable rod 204 passes through the outer wall of the fixed block 201.

[0084] In the above design, when the block 212 is engaged with the slot 206, the limiting ring 205 limits and fixes the moving rod 204; when the block 212 is pressed to disengage it from the slot 206, the connecting spring 211 is forced to contract, releasing the fixed state of the moving rod 204 and the limiting ring 205. At this time, the moving rod 204 can be pulled outward to pull the block 212 to the outside of the limiting ring 205. Since the inner diameter of the limiting ring 205 is larger than the outer diameter of the moving rod 204, its inner wall does not contact the outer wall of the moving rod 204, so that the moving rod 204, the fixed rod 210 and the rotating wheel 202 can rotate freely, and a more stable movement can be achieved on a bumpy ground.

[0085] Furthermore, if Figure 3and Figure 4 As shown in Figure 4 , the buffer assembly includes a buffer block 207; the inner wall of the buffer block 207 is elastically connected with a rubber pad 208 through a buffer spring 209; the rubber pad 208 is fixedly connected to one end of the wheel frame of the roller 203 extending into the buffer block 207 (the design of the roller 203 includes a wheel body and a Y-shaped wheel frame connecting the wheel body, and one end of the wheel frame can extend into the inner wall of the buffer block 207); the rotating wheel 202 is detachably and fixedly connected to the buffer block 207 (for example, an installation cavity can be provided on the outer peripheral surface of the rotating wheel 202 along the radial direction of the rotating wheel 202 for the buffer block 207 to be detachably installed); one end of the buffer spring 209 is fixedly connected to the outer wall of the rubber pad 208; the other end of the buffer spring 209 is fixedly connected to the inner wall of the buffer block 207.

[0086] In the above design, each group of rollers 203 is arranged on the buffer assembly. The inner wall of the buffer block 207 is provided with a plurality of transverse grooves arranged at intervals in the radial direction of the rotating wheel 202 in sequence. The size of the transverse grooves is adapted to the size of the rubber pad 208 and can allow the rubber pad 208 to be deformed and clamped in or deformed and disengaged; when the roller 203 is jolted, the wheel frame of the roller 203 and the rubber pad 208 move deep into the inner wall of the buffer block 207 at the same time. During the moving process, the return spring 301 is gradually compressed. And the rubber pad 208 is deformed and disengaged from the current transverse groove and clamped into the next transverse groove during the moving process. That is to say, the rubber pad 208 will be continuously deformed and in frictional contact with the inner wall of the buffer block 207 during the moving process, so as to increase the friction force when the wheel frame of the roller 203 moves deep into the inner wall of the buffer block 207. And when the return spring 301 drives the roller 203 to reset, it is also affected by the high friction force between the rubber pad 208 and the inner wall of the buffer block 207. The moving speed of the roller 203 is delayed through the contact friction deformation between the rubber pad 208 and the inner wall of the buffer block 207. At the same time, the buffer effect is better by using its own deformation characteristics to cooperate with the return spring 301, further reducing the vibration generated when the roller 203 is jolted, and thus reducing the impact of the vibration on the detector main body 1.

[0087] Furthermore, the folding mechanism 3 includes a slide rod 302; a rotating block 303 is rotatably connected to the outer wall of the slide rod 302; the slide rod 302 is elastically connected in the inner wall of the detector main body 1 through a return spring 301; a telescopic block 304 is fixedly connected to the inner wall of the rotating block 303; a plug block 305 is fixedly connected to the outer wall of the telescopic block 304; a slot 306 for clamping the plug block 305 is provided on the outer wall of the connecting block 6.

[0088] In the above design, the sliding rod 302 can only move horizontally in the inner wall of the detector main body 1 and cannot rotate. The connecting block 6 can be flipped on the detector main body 1. The connecting block 6 and the detector main body 1 can be fixedly connected by the insertion block 305 being snapped into the slot 306. When the two are flipped into a straight line, it is in the unfolded state, and the handle 7 can be held to perform cable detection operations. After the two are flipped, they can also be fixed by the insertion block 305 being snapped into the slot 306. At this time, it is in the folded state, as Figure 2 shown, which can reduce the occupied space and is convenient for carrying.

[0089] Furthermore, as Figure 5 shown, one end of the return spring 301 is fixedly connected to the outer wall of the sliding rod 302; the other end of the return spring 301 is fixedly connected to the inner wall of the detector main body 1.

[0090] In the above design, the rotating block 303 can rotate on the outer wall of the sliding rod 302. Under normal conditions, due to the elastic force, the return spring 301 keeps the sliding rod 302 in a certain position, driving the insertion block 305 to be snapped into the slot 306. When the rotating block 303 is pulled, the sliding rod 302 moves outward to compress the return spring 301, and the insertion block 305 is disengaged from the slot 306, thus releasing the limit between the detector main body 1 and the connecting block 6 and adjusting their states. After the connecting block 6 is flipped, the rotating block 303 can be rotated to make the insertion block 305 rotate to a position corresponding to the slot 306, and then the return spring 301 can drive the sliding rod 302 to move back into the inner wall of the detector main body 1 by its elastic force, and the rotating block 303 and the telescopic block 304 are reset, and the insertion block 305 is inserted into the slot 306 to fix the connecting block 6 and the detector main body 1.

[0091] Furthermore, as Figure 6 shown, the protection mechanism 4 includes a mounting block 401; a rotating shaft 404 is rotatably connected to the inner wall of the mounting block 401; cover plates 406 are fixedly connected to both ends of the rotating shaft 404; the cover plates 406 are used to cover the display screen 5.

[0092] A pull rod 403 is elastically connected to the inner wall of the mounting block 401 through a telescopic spring 402; a groove 405 is formed on the outer wall of the rotating shaft 404; the pull rod 403 is slidably connected to the inner wall of the mounting block 401; the pull rod 403 can be snapped into the groove 405.

[0093] One end of the telescopic spring 402 is fixedly connected to the outer wall of the pull rod 403; the other end of the telescopic spring 402 is fixedly connected to the inner wall of the mounting block 401.

[0094] In the above design, when the cover 406 is flipped, the shaft 404 can rotate in the inner wall of the mounting block 401, and there are multiple groups of grooves 405 distributed on the circumference of the shaft 404. Under normal circumstances, the pull rod 403 is engaged with a group of shafts 404 due to the elastic force of the telescopic spring 402, thereby limiting the shaft 404 and fixing the cover 406; by pulling the pull rod 403 to disengage it from the groove 405, the limit of the shaft 404 can be released, and the cover 406 can be opened and flipped over; the cover 406 is made of opaque plastic material. According to the light exposure direction of the detector body 1 in the use scenario, the flipping angle of the cover 406 can be adjusted so that it can block light and avoid reflection of the display screen 5, making it easier for operators to read data in different light environments.

[0095] Working principle and usage process of this application:

[0096] When in use, the connecting block 6 and the detector body 1 can be unfolded first, and the rotating block 303 can be pulled first to move the slide bar 302 outward to compress the return spring 301, and the plug block 305 is out of contact with the slot 306, thereby releasing the limit between the detector body 1 and the connecting block 6, and the connecting block 6 can be flipped from the folded state in contact with the detector body 1 to the unfolded state in a straight line with the detector body 1; then the rotating block 303 is rotated to rotate the plug block 305 to the position corresponding to the slot 306, and the elastic force of the return spring 301 drives the slide bar 302 to move and reset toward the inner wall of the detector body 1, and the rotating block 303 and the telescopic block 304 are reset accordingly, and the plug block 305 is inserted into the slot 306 to fix the connecting block 6 and the detector body 1. At this time, the handle 7 at the top of the connecting block 6 can be held to prepare for the detection operation.

[0097] If used on a relatively flat ground, it is ensured that the block 212 in the movable rod 204 is in a state of being engaged with the slot 206. At this time, the fixed rod 210 and the movable rod 204 cannot rotate, the rotating wheel 202 is also relatively fixed, and the two sets of rollers 203 are in contact with the ground. The operator can push the device and move it on the ground to perform cable detection with relatively little effort.

[0098] When moving on a relatively bumpy ground, the clamping block 212 can be pressed to disengage it from the clamping groove 206. The connecting spring 211 is stressed and contracts, pulling the moving rod 204 outwards, so that the clamping block 212 is pulled to the outside of the limiting ring 205. At this time, the moving rod 204, the fixed rod 210 and the rotating wheel 202 can rotate freely in the inner wall of the fixed block 201. In this state, the three rollers 203 can alternately contact the ground, better fitting the ground of various shapes. And when the rollers 203 are jolted, the rubber pad 208 will be driven by the vibration to move in the inner wall of the buffer block 207, and deform under the extrusion of the internal transverse groove, increasing the friction force, thereby reducing the amplitude of the vibration and the vibration impact generated by the bumpy road surface, ensuring the normal operation of the precision components inside the detector main body 1 and also ensuring the accuracy of the detection data.

[0099] During detection, the pull rod 403 inside the mounting block 401 can be pulled to disengage it from the groove 405 on the outer wall of the rotating shaft 404, releasing the limit on the rotating shaft 404 and flipping the cover plate 406 upwards to expose the display screen 5 for the operator to read the detection data. According to the light irradiation direction of the use occasion, the angle of the cover plate 406 can be flipped and adjusted so that it can effectively block the light and prevent the display screen 5 from reflecting light and affecting the data reading. After adjusting the cover plate 406 to an appropriate angle, the pull rod 403 can be released. Under the elastic force of the telescopic spring 402, the pull rod 403 is clamped with the corresponding groove 405 to fix the angle of the rotating shaft 404 and the cover plate 406.

[0100] After the adjustment is completed, the detector main body 1 can be started. The internal transmitter sends an alternating current signal underground, causing the cable to generate an induced current and an alternating magnetic field. During the movement, the receiver uses the sensor to collect the weak magnetic field signal after long-distance propagation and medium attenuation. The collected weak magnetic field signal enters the inside of the detector main body 1, is first amplified, then filtered to remove the interference signal, and then combines a variety of characteristic information. The processed signal is deduced by combining the algorithm software to obtain the position and depth of the cable.

[0101] The above has introduced in detail a large-depth cable detector based on weak signal detection provided by the present application. For those of ordinary skill in the art, according to the idea of the embodiments of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A large-depth cable detector based on weak signal detection, characterized in that, It includes a detector main body (1), a moving mechanism (2), a connecting block (6), a folding mechanism (3) and a protection mechanism (4); The moving mechanism (2) is arranged on the outer wall of the detector main body (1) and includes a fixed block (201); A runner (202) is rotatably connected inside the fixed block (201); At least three rollers (203) are circumferentially arranged around the runner (202); Each of the rollers (203) is connected to the runner (202) through a buffer assembly; The connecting block (6) is hinged to the top outer wall of the detector main body (1); A handle (7) is fixedly connected to the outer wall of the connecting block (6); The folding mechanism (3) is respectively connected to the connecting block (6) and the detector main body (1) for locking the connection between the connecting block (6) and the detector main body (1); A display screen (5) is fixedly connected to the top outer wall of the connecting block (6); The protection mechanism (4) is installed on the display screen (5) for covering the display screen (5).

2. The large-depth cable detector based on weak signal detection according to claim 1, wherein The fixed block (201) is in an inverted U shape and is symmetrically and fixedly connected to the outer walls on both sides of the detector main body (1).

3. The large-depth cable detector based on weak signal detection according to claim 2, wherein A fixed rod (210) is rotatably connected to the inner wall of the runner (202); A moving rod (204) is slidably connected to the inner wall of the fixed rod (210); A clamping block (212) is elastically connected to the inner wall of the moving rod (204) through a connecting spring (211); A limit ring (205) is fixedly connected to the outer wall of the fixed block (201); A card slot (206) is formed on the outer wall of the limit ring (205); The fixed rod (210) penetrates through the fixed block (201) and is rotatably connected to the fixed block (201); The clamping block (212) can be clamped with the card slot (206).

4. The large-depth cable detector based on weak signal detection according to claim 3, characterized in that, One end of the connecting spring (211) is fixedly connected to the outer wall of the clamping block (212); The other end of the connecting spring (211) is fixedly connected to the inner wall of the moving rod (204); The clamping block (212) is slidably connected to the inner wall of the moving rod (204); The moving rod (204) penetrates through the outer wall of the fixed block (201).

5. A large-depth cable detector based on weak signal detection according to claim 1, characterized in that, The buffer assembly includes a buffer block (207); A rubber pad (208) is elastically connected to the inner wall of the buffer block (207) through a buffer spring (209); The rubber pad (208) is fixedly connected to one end of the wheel frame of the roller (203) extending into the buffer block (207); The runner (202) is detachably and fixedly connected to the buffer block (207); One end of the buffer spring (209) is fixedly connected to the outer wall of the rubber pad (208); The other end of the buffer spring (209) is fixedly connected to the inner wall of the buffer block (207).

6. The large-depth cable detector based on weak signal detection according to claim 1, characterized in that The folding mechanism (3) includes a sliding rod (302); A rotating block (303) is rotatably connected to the outer wall of the sliding rod (302); The sliding rod (302) is elastically connected to the inner wall of the detector main body (1) through a return spring (301); A telescopic block (304) is fixedly connected to the inner wall of the rotating block (303); The outer wall of the telescopic block (304) is fixedly connected with an insertion block (305); A slot (306) for clamping the insertion block (305) is formed in the outer wall of the connection block (6).

7. A large-depth cable detector based on weak signal detection according to claim 6, characterized in that, One end of the return spring (301) is fixedly connected with the outer wall of the sliding rod (302); The other end of the return spring (301) is fixedly connected with the inner wall of the detector body (1).

8. A large-depth cable detector based on weak signal detection according to claim 1, characterized in that, The protection mechanism (4) includes a mounting block (401); A rotating shaft (404) is rotatably connected to the inner wall of the mounting block (401); Both ends of the rotating shaft (404) are fixedly connected with a cover plate (406); The cover plate (406) is used to cover the display screen (5).

9. A large-depth cable detector based on weak signal detection according to claim 8, characterized in that A pull rod (403) is elastically connected to the inner wall of the mounting block (401) through a telescopic spring (402); A groove (405) is formed in the outer wall of the rotating shaft (404); The pull rod (403) is slidably connected to the inner wall of the mounting block (401); The pull rod (403) can be clamped with the groove (405).

10. The large-depth cable detector based on weak signal detection according to claim 9, characterized in that, One end of the telescopic spring (402) is fixedly connected with the outer wall of the pull rod (403); The other end of the telescopic spring (402) is fixedly connected with the inner wall of the mounting block (401).

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