An underground pipeline detector

Abstract

This invention relates to the field of pipeline detectors. The underground pipeline detector includes a transmitter for emitting alternating electromagnetic signals at a specific frequency and a receiver for sensing changes in the electromagnetic field. A storage device for storing tools is provided on one side of the transmitter. The storage device is equipped with an insertion device for inserting a grounding rod. The insertion device includes a cylinder mounted on the storage device. One end of the cylinder is fixedly connected to a cylinder cover that seals the opening at the end of the cylinder. An internally threaded sleeve is rotatably connected to the inner wall of the cylinder, and a threaded drive block is internally threaded onto the sleeve. This pipeline detector avoids the problem of operators needing to pour water or salt water to soften the soil at the insertion point when encountering hard backfill soil or frozen soil. This process requires time for the water to seep into the soil, and the infiltration rate is affected by soil texture and ambient temperature, causing the insertion time of the grounding rod to fluctuate with the soil conditions of the work area.

Description

Technical Field

[0001] This invention belongs to the technical field of pipeline detectors, and specifically relates to an underground pipeline detector. Background Technology

[0002] The underground pipeline detector is a specialized geophysical exploration equipment developed for the accurate identification and location of various hidden underground pipelines under trenchless conditions. It is a core and essential device for avoiding the risk of construction damage and understanding the distribution of underground pipelines in urban engineering construction, pipeline network operation and maintenance, and underground space management. The mainstream model adopts an integrated intelligent sensing architecture of "signal excitation unit + intelligent sensing terminal", which is usually composed of a signal transmitter and an intelligent receiver. The core integrates electromagnetic induction sensing and embedded intelligent computing technology: the transmitter applies an alternating electromagnetic signal of a specific frequency to the target pipeline, so that the pipeline generates an induced electromagnetic field that can be sensed from a distance; the intelligent receiver, as the sensing core of the system, captures the electromagnetic field intensity and phase spatial distribution characteristics radiated by the underground pipeline through a high-sensitivity antenna array, and then completes intelligent processing such as digital filtering, interference suppression, feature calculation, and error self-calibration through the built-in DSP / MCU microprocessor. Finally, it accurately outputs structured sensing data such as the planar direction, precise burial depth, spatial location, and pipe diameter attributes of the pipeline, realizing non-contact intelligent sensing of hidden underground pipelines.

[0003] When existing pipeline detectors use the direct connection method to conduct underground pipeline detection, grounding rods need to be inserted into the ground to form a signal transmission circuit. However, grounding rods are generally inserted manually into the soil by operators. In actual field operations, hard backfill soil, dense clay layers, and low-temperature frozen soil are often encountered. Grounding rods cannot be inserted manually in such high-hardness soils. Operators need to pour clean water or salt water into the insertion point to soften the soil. However, water needs to seep into the soil for a certain period of time, and the seepage rate varies significantly with soil texture and ambient temperature. Ultimately, this causes the insertion time of grounding rods to fluctuate greatly with the soil conditions of the work area, affecting the overall efficiency and controllability of pipeline detection operations. Summary of the Invention

[0004] The purpose of this invention is to provide an underground pipeline detector with a simple structure and reasonable design in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] An underground pipeline detector includes a transmitter for transmitting alternating electromagnetic signals at a specific frequency and a receiver for sensing changes in the electromagnetic field. A storage device for storing tools is provided on one side of the transmitter, and a plugging device for inserting a grounding rod is provided on the storage device.

[0007] The insertion device includes a cylinder mounted on a storage device. One end of the cylinder is fixedly connected to a cylinder cover that seals the opening at the end of the cylinder. An internally threaded sleeve is rotatably connected to the inner wall of the cylinder. A threaded drive block is internally threaded onto the internally threaded sleeve. A guide shaft for guiding the movement direction of the threaded drive block is fixedly connected inside the cylinder. A grounding rod for grounding is movably connected to the inner wall of the threaded drive block. The surface of the grounding rod has a helical cutting groove, which makes it easier for the grounding rod to be inserted into the soil when rotating. Two connecting rings arranged vertically are fixedly connected to the surface of the grounding rod. A connecting sleeve is fixedly connected to the upper surface of the internally threaded sleeve. The connecting sleeve is slidably connected to the surface of the grounding rod. A driven gear is fixedly connected to the upper surface of the connecting sleeve. The internally threaded sleeve and the driven gear can be connected through the connecting sleeve, so that the internally threaded sleeve can rotate with the driven gear. A bracket is fixedly connected to one side of the cylinder. A motor as a power source is fixedly connected to the bracket. The motor is electrically connected to a transmitter. An active gear adapted to the driven gear is fixedly connected to the output end of the motor.

[0008] As a further optimization of the present invention, the transmitter includes a host, on which an operation panel is fixedly connected; the receiver includes a body, on which a control panel is fixedly connected; a handle is fixedly connected between the body and the control panel; and both the host and the body integrate a controller, which includes, but is not limited to, a PCB control motherboard, a microcontroller, or other control unit.

[0009] As a further optimization of the present invention, a protective cover for protecting the transmission structure is fixedly connected to the upper surface of the cylinder head. The protective cover is fixedly connected to the upper surface of the bracket. The output end of the motor movably passes through the protective cover. Both the driven gear and the driving gear are located inside the protective cover. The protective cover can protect the driven gear and the driving gear, avoiding the problem of the driven gear and the driving gear being exposed in the use environment, which is prone to wear of the meshing parts. The driven gear meshes with the driving gear. Under the drive of the motor, the driving gear drives the connecting sleeve to rotate by meshing with the driven gear, so that the internal threaded sleeve can be rotated.

[0010] As a further optimization of the present invention, an assembly cavity is formed on the lower surface of the cylinder body. A pressure sensor for outputting electrical signals is fixedly connected to the inner wall of the assembly cavity of the cylinder body. The pressure sensor is electrically connected to the transmitter. A connecting column is slidably connected to the inner wall of the assembly cavity. A cover is fixedly connected to the lower surface of the cylinder body. The connecting column slides through the cover. A base is fixedly connected to the end of the connecting column away from the cylinder body. A second spring is fixedly connected between the base and the cover. The second spring can constrain the position of the base so that the base always remains in the unfolded state when not under force. The second spring is sleeved on the connecting column.

[0011] As a further optimization of the present invention, a handle is fixedly connected to the surface of the cylinder body, the motor abuts against the upper surface of the handle, and the base slides in contact with the side surface of the handle. The handle makes it convenient for the operator to pick up the cylinder body. In addition, when the operator places the insertion device on the ground, the handle can support the cylinder body from the side, preventing the cylinder body from tilting due to the eccentric weight of the motor.

[0012] As a further optimization of the present invention, the surface of the threaded drive block is provided with a groove and a circular hole. The guide shaft is slidably connected to the inner wall of the circular hole. By guiding the threaded drive block through the guide shaft, the problem of the threaded drive block being unable to move vertically due to the rotation of the internal threaded sleeve can be avoided. The connecting ring is rotatably connected to the inner wall of the groove. The setting of the connecting ring allows the threaded drive block to drive the rotating grounding rod to move vertically when it moves vertically. The connecting sleeve is rotatably connected to the inner wall of the cylinder head. The inner wall of the connecting sleeve is provided with a protrusion. The surface of the grounding rod is provided with a sliding groove. The protrusion is slidably connected to the inner wall of the sliding groove. The passive gear is slidably sleeved on the grounding rod. The number of pressure sensors is four. The four pressure sensors are arranged in a circumferential array with the grounding rod as a reference. The setting of four pressure sensors can ensure that the motor can only be started when the base is in stable contact with the ground, avoiding the problem of the grounding rod extending in a non-working state due to accidental motor start-up.

[0013] As a further optimization of the present invention, the shielding cover is provided with a cleaning device, which includes a collar rotatably installed inside the shielding cover. The inner wall of the collar is fixedly connected to a scraper adapted to the spiral cutting groove. The cooperation between the scraper and the collar can clean the dirt attached to the surface of the retracted grounding rod. The upper end of the scraper is hemispherical and the lower end is semi-cylindrical. The hemispherical design of the upper end of the scraper allows the grounding rod to pass smoothly through the cleaning structure formed by it and the collar, while the semi-cylindrical design of the lower end of the scraper can scrape off the dirt attached to the spiral cutting groove of the grounding rod when the grounding rod is reset. There are multiple scrapers, which are arranged in a circumferential array with reference to the shielding cover. The number of scrapers can be adjusted according to the number of spiral cutting grooves on the surface of the grounding rod.

[0014] As a further optimization of the present invention, the storage device includes a storage rack fixed to one side of the transmitter. A mounting box is fixedly connected to the surface of the cylinder. A locking pin is slidably connected inside the mounting box. An insertion hole is provided on the side of the storage rack. The locking pin is inserted into the insertion hole. When the locking pin is inserted into the insertion hole, the cylinder can be restricted inside the storage rack, so that the cylinder is stored and placed on one side of the transmitter. A baffle is fixedly connected to the side of the mounting box away from the storage rack. A spring is fixedly connected between the locking pin and the baffle. The spring can apply a preload to the locking pin, so that the locking pin inserted into the storage rack can be stably kept in the locked state. A protrusion is fixedly connected to the surface of the locking pin. A guide groove is provided on the inner wall of the handle. A slider is slidably connected to the inner wall of the guide groove. A pull rod is fixedly connected to the surface of the slider. A connecting frame that adapts to the protrusion is fixedly connected to the surface of the pull rod. The connecting frame can be moved along a specified direction by the pull rod.

[0015] As a further optimization of the present invention, the locking pin slides through one side of the mounting box, the mounting box is provided with a guide hole, the protrusion is slidably connected to the guide hole, the surface of the connecting frame is provided with an oblique hole, the protrusion is slidably connected to the oblique hole, the guide hole and the oblique hole can guide and constrain the movement direction of the protrusion, so that the protrusion can cooperate with the connecting frame to drive the locking pin to move.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. Because the grounding rod is inserted into the soil through the insertion device, replacing the traditional manual insertion of grounding rods, when the insertion device is used to insert the grounding rod, the internal threaded sleeve, the threaded drive block and the guide shaft cooperate to achieve the dual action of rotational cutting and vertical feeding of the grounding rod with a single motor. This allows the grounding rod to drill into the soil in a rotational cutting posture, which can directly overcome the resistance of high hard soil layers without any soil softening pretreatment. This eliminates the ineffective waiting time for water to seep in, thereby improving work efficiency. It also avoids the problem that when encountering hard backfill soil, frozen soil and other scenarios, operators need to pour clean water or salt water to soften the soil at the insertion point. Water seepage into the soil requires waiting, and the seepage rate is affected by soil texture and ambient temperature, causing the grounding rod insertion time to fluctuate with the soil conditions of the work area.

[0018] 2. Because the bottom of the insertion device is equipped with a cleaning device, when the insertion device drives the grounding rod to reset, the collar and scraper can clean the soil attached to the surface of the grounding rod. The cleaning can be completed simultaneously when the grounding rod is reset and stored, without the need for manual wiping and digging.

[0019] 3. Because the transmitter has a storage device on its side, the grounding rod device can be directly stored and fixed on the side of the transmitter, realizing the integrated carrying of the detection host and the grounding rod device. This solves the problem of easy loss and omission of the grounding rod in the traditional split design, and is suitable for multi-point field operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure between the storage rack and the cylinder body of the present invention;

[0022] Figure 3 This is a schematic diagram of the insertion device of the present invention;

[0023] Figure 4 This is a cross-sectional view of the cylinder block of the present invention;

[0024] Figure 5 This is the present invention. Figure 4 Enlarged view of the structure at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the connection structure between the internal threaded sleeve and the threaded drive block of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the connecting sleeve and the driven gear of the present invention;

[0027] Figure 8 This is a schematic diagram of the connection structure between the pressure sensor and the assembly cavity of the present invention;

[0028] Figure 9 This is a side view of the handle and cylinder body of the present invention;

[0029] Figure 10 This is a schematic diagram of the connection structure between the collar and the shielding cover of the present invention;

[0030] Figure 11 This is a bottom view of the cleaning device of the present invention;

[0031] Figure 12 This is a schematic diagram of the connection structure between the storage rack and the locking pin of the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of the storage device of the present invention;

[0033] Figure 14 This is a schematic diagram of the connection structure between the protrusion and the mounting box of the present invention.

[0034] In the diagram: 1. Transmitter; 11. Main unit; 12. Control panel; 2. Receiver; 21. Body; 22. Control panel; 23. Grip; 3. Storage device; 31. Storage rack; 32. Mounting box; 33. Locking pin; 34. Baffle; 35. Spring 1; 36. Protruding post; 37. Connecting frame; 38. Pull rod; 39. Slider; 310. Guide groove; 4. Insertion device; 41. Cylinder body; 42. Cylinder head; 43. Internal threaded sleeve; 44. Threaded drive block; 45. Guide shaft; 46. Grounding pin; 47. Connecting ring; 48. Connecting sleeve; 49. Driven gear; 410. Bracket; 411. Motor; 412. Drive gear; 413. Protective cover; 414. Assembly cavity; 415. Pressure sensor; 416. Connecting column; 417. Cover; 418. Base; 419. Spring II; 420. Handle; 5. Cleaning device; 51. Collar; 52. Scraper. Detailed Implementation

[0035] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] Example: Please refer to Figures 1-14 An underground pipeline detector includes a transmitter 1 for transmitting alternating electromagnetic signals at a specific frequency and a receiver 2 for sensing changes in the electromagnetic field. The transmitter 1 also integrates an intelligent sensing module, which includes, but is not limited to, a control unit such as a microcontroller. A storage device 3 for storing tools is provided on one side of the transmitter 1, and a plugging device 4 for inserting a grounding rod is provided on the storage device 3.

[0037] Please see Figures 2-6The insertion device 4 includes a cylinder 41 mounted on the storage device 3. A cylinder cover 42, sealing the end opening of the cylinder 41, is fixedly connected to one end of the cylinder 41. An internally threaded sleeve 43 is rotatably connected to the inner wall of the cylinder 41. A threaded drive block 44 is internally threadedly connected to the internally threaded sleeve 43. A guide shaft 45, used to guide the movement direction of the threaded drive block 44, is fixedly connected inside the cylinder 41. A grounding rod 46, used for grounding, is movably connected to the inner wall of the threaded drive block 44. A spiral cutting groove is formed on the surface of the grounding rod 46. The spiral cutting groove makes it easier for the grounding rod 46 to be inserted into the soil when rotating. The surface of the grounding rod 46 is fixedly connected to... There are two connecting rings 47 arranged vertically. A connecting sleeve 48 is fixedly connected to the upper surface of the internal threaded sleeve 43. The connecting sleeve 48 is slidably connected to the surface of the grounding pin 46. A driven gear 49 is fixedly connected to the upper surface of the connecting sleeve 48. The internal threaded sleeve 43 and the driven gear 49 can be connected through the connecting sleeve 48, so that the internal threaded sleeve 43 can rotate with the driven gear 49. A bracket 410 is fixedly connected to one side of the cylinder body 41. A motor 411, which serves as a power source, is fixedly connected to the bracket 410. The motor 411 is electrically connected to the transmitter 1. An active gear 412 adapted to the driven gear 49 is fixedly connected to the output end of the motor 411.

[0038] Please see Figure 1 The transmitter 1 includes a main unit 11, on which an operation panel 12 is fixedly connected. The receiver 2 includes a body 21, on which a control panel 22 is fixedly connected. A handle 23 is fixedly connected between the body 21 and the control panel 22. Both the main unit 11 and the body 21 have integrated controllers, including but not limited to PCB control motherboards, microcontrollers, and other control units.

[0039] Please see Figure 2 and Figure 3 A protective cover 413 for protecting the transmission structure is fixedly connected to the upper surface of the cylinder head 42. The protective cover 413 is fixedly connected to the upper surface of the bracket 410. The output end of the motor 411 moves through the protective cover 413. The driven gear 49 and the driving gear 412 are both located inside the protective cover 413. The protective cover 413 can protect the driven gear 49 and the driving gear 412, preventing them from being exposed in the operating environment, which could easily cause wear on the meshing parts. The driven gear 49 meshes with the driving gear 412. Driven by the motor 411, the driving gear 412 drives the connecting sleeve 48 to rotate by meshing with the driven gear 49, so that the internal threaded sleeve 43 can be rotated.

[0040] Please see Figure 3 and Figure 8The lower surface of the cylinder body 41 has an assembly cavity 414. A pressure sensor 415 for outputting electrical signals is fixedly connected to the inner wall of the assembly cavity 414. The pressure sensor 415 is electrically connected to the transmitter 1 and is used to provide the transmitter 1 with an electrical signal to control the motor 411. In conjunction with the intelligent sensing module integrated in the transmitter 1, the transmitter 1 can control the motor 411 to work. A connecting post 416 is slidably connected to the inner wall of the assembly cavity 414. A cover 417 is fixedly connected to the lower surface of the cylinder body 41. The connecting post 416 slides through the cover 417. A base 418 is fixedly connected to the end of the connecting post 416 away from the cylinder body 41. A second spring 419 is fixedly connected between the base 418 and the cover 417. The second spring 419 can constrain the position of the base 418 so that the base 418 always remains in the unfolded state when not under force. The second spring 419 is sleeved on the connecting post 416.

[0041] Please see Figure 3 and Figure 9 A handle 420 is fixedly connected to the surface of the cylinder body 41. The motor 411 abuts against the upper surface of the handle 420, and the base 418 slides against the side surface of the handle 420. The handle 420 is designed to make it convenient for the operator to pick up the cylinder body 41. In addition, when the operator places the inserting device 4 on the ground, the handle 420 can support the cylinder body 41 from the side, preventing the cylinder body 41 from tilting due to the eccentric weight of the motor 411.

[0042] Please see Figures 5-8 The threaded drive block 44 has a groove and a round hole on its surface. The guide shaft 45 is slidably connected to the inner wall of the round hole. By guiding the threaded drive block 44 through the guide shaft 45, the problem of the threaded drive block 44 being unable to move vertically due to the rotation of the internal threaded sleeve 43 can be avoided. The connecting ring 47 is rotatably connected to the inner wall of the groove. The setting of the connecting ring 47 allows the threaded drive block 44 to drive the rotating grounding rod 46 to move vertically when it moves vertically. The connecting sleeve 48 is rotatably connected to the inner wall of the cylinder head 42. The inner wall of the connecting sleeve 48 is provided with a raised strip, and the surface of the grounding rod 46 is provided with a sliding groove. The raised strip is slidably connected to the inner wall of the sliding groove. The passive gear 49 is slidably sleeved on the grounding rod 46. There are four pressure sensors 415. The four pressure sensors 415 are arranged in a circumferential array with the grounding rod 46 as a reference. The arrangement of the four pressure sensors 415 can ensure that the motor 411 can be started only when the base 418 is in stable contact with the ground, avoiding the problem of the grounding rod 46 extending out when not in operation due to accidental starting of the motor 411.

[0043] Please see Figure 3 , Figure 10 and Figure 11A cleaning device 5 is provided on the cover 417. The cleaning device 5 includes a collar 51 rotatably installed inside the cover 417. A scraper 52 adapted to the spiral cutting groove is fixedly connected to the inner wall of the collar 51. The cooperation between the scraper 52 and the collar 51 can clean the dirt attached to the surface of the retracted grounding rod 46. The upper end of the scraper 52 is hemispherical and the lower end is semi-cylindrical. The hemispherical design of the upper end of the scraper 52 allows the grounding rod 46 to pass smoothly through the cleaning structure formed by it and the collar 51. The semi-cylindrical design of the lower end of the scraper 52 can scrape off the dirt attached to the spiral cutting groove of the grounding rod 46 when the grounding rod 46 is reset. There are multiple scrapers 52, which are arranged in a circumferential array with reference to the cover 417. The number of scrapers 52 can be adjusted according to the number of spiral cutting grooves on the surface of the grounding rod 46.

[0044] Please see Figure 1 , Figure 12 , Figure 13 and Figure 14 The storage device 3 includes a storage rack 31 fixed to one side of the transmitter 1. A mounting box 32 is fixedly connected to the surface of the cylinder 41. A locking pin 33 is slidably connected inside the mounting box 32. An insertion hole is provided on the side of the storage rack 31. The locking pin 33 is inserted into the insertion hole. When the locking pin 33 is inserted into the insertion hole, the cylinder 41 can be restricted inside the storage rack 31, so that the cylinder 41 is stored and placed on one side of the transmitter 1. A baffle 34 is fixedly connected to the side of the mounting box 32 away from the storage rack 31. The locking pin 33 is fixed to the baffle 34. A spring 35 is connected, which can apply a preload to the locking pin 33, so that the locking pin 33 inserted into the storage rack 31 can be stably kept in the locked state. A protrusion 36 is fixedly connected to the surface of the locking pin 33. A guide groove 310 is provided on the inner wall of the handle 420. A slider 39 is slidably connected to the inner wall of the guide groove 310. A pull rod 38 is fixedly connected to the surface of the slider 39. A connecting frame 37 that matches the protrusion 36 is fixedly connected to the surface of the pull rod 38. The connecting frame 37 can be moved along a specified direction by the pull rod 38.

[0045] Please see Figure 13 and Figure 14 The locking pin 33 slides through one side of the mounting box 32. The mounting box 32 has a guide hole. The protrusion 36 is slidably connected to the guide hole. The surface of the connecting frame 37 has an oblique hole. The protrusion 36 is slidably connected to the oblique hole. The guide hole and the oblique hole can guide and constrain the movement direction of the protrusion 36, so that the protrusion 36 can cooperate with the connecting frame 37 to drive the locking pin 33 to move.

[0046] It should be noted that when this type of underground pipeline detector uses the direct connection method for underground pipeline detection, the grounding rod 46 is first inserted at a point perpendicular to the direction of the target pipeline and at a horizontal distance of not less than 3 meters from the target pipeline. Then, the transmitter 1 main unit 11 is reliably connected to the exposed metal part of the pipeline to be detected and the grounding rod 46 through a dedicated connecting cable. After the connection is completed, the transmitter 1 is powered on, and the frequency of the output signal is set according to the detection conditions. Then, the receiver 2 is picked up, its power is turned on, and the receiving frequency is adjusted to be exactly the same as that of the transmitter 1. The operator can then hold the receiver 2 and carry out underground pipeline location and detection operations along the detection path.

[0047] Before inserting the grounding pin 46, hold the handle 420 of the insertion device 4 and pull the lever 38 inside the handle 420. The lever 38 drives the connecting frame 37 to slide along the guide groove 310. The connecting frame 37 drives the protrusion 36 to move laterally along the guide hole of the mounting box 32 through the oblique hole on its surface. The protrusion 36 simultaneously drives the locking pin 33 to slide towards the baffle 34, compressing the spring 35 to deform, causing the end of the locking pin 33 to disengage from the insertion hole of the storage frame 31. After the locking pin 33 is completely removed from the storage frame 31, the entire insertion device 4 can be removed from the storage frame 31 on the transmitter 1 side through the handle 420.

[0048] After removing the insertion device 4, move it to the preset insertion point and place it stably on the ground. After the base 418 contacts the ground, it remains stationary due to the ground support. The weight of the cylinder 41, motor 411, and other components exerts downward pressure, causing the cover 417 to compress the spring 419 downward. At the same time, the four pressure sensors 415 at the bottom of the cylinder 41 synchronously contact the upper end of the connecting column 416. Only when all four pressure sensors 415 detect the pressure signal and confirm that the device is stably placed without tilting will the pressure sensors 415 transmit the trigger signal to the intelligent sensing module in the transmitter 1. The intelligent sensing module, in conjunction with the controller of the transmitter 1, starts the motor 411. The motor 411 drives the active gear 412 to rotate, which drives the passive gear 49 to rotate synchronously through meshing transmission. This, in turn, drives the internal threaded sleeve 43 and the grounding pin 46 to rotate synchronously through the connecting sleeve 48. When the internal threaded sleeve 43 rotates, it drives the threaded drive block 44 to move vertically downward along the guide shaft 45 through thread transmission. The threaded drive block 44 drives the rotating grounding rod 46 to feed downwards synchronously through the connecting ring 47. The tip of the grounding rod 46 passes downwards through the collar 51 inside the shielding cover 417. The hemispherical upper end of the scraper 52 guides the grounding rod 46 to pass smoothly. At the same time, the scraper 52 is inserted into the spiral cutting groove on the surface of the grounding rod 46, causing the collar 51 to rotate synchronously with the grounding rod 46. The grounding rod 46 drills into the soil in a rotating cutting posture, greatly reducing the soil penetration resistance. During the process of the grounding rod 46 being inserted into the soil, the transmitter 1 uses the internally integrated intelligent sensing module to combine the rotation parameters of the motor 411 and the threaded feed stroke to accurately calculate the soil penetration depth of the grounding rod 46 in real time. When the grounding rod 46 is inserted into the soil to reach the preset standard value, the transmitter 1, in conjunction with its internal intelligent sensing module, controls the motor 411 to stop running. The grounding rod 46 remains in the inserted state, thus completing the fully automatic insertion operation of the grounding rod 46. Then, the wiring operation between the transmitter 1 and the grounding rod 46 can be completed according to the direct connection method.

[0049] When the underground pipeline detection work is completed and the grounding rod 46 needs to be pulled out, the cylinder 41 is pulled upward by holding the handle 420 and the pull rod 38. The cylinder 41 drives the shield 417 and the pressure sensor 415 to move upward synchronously. The spring 419 loses pressure and rebounds to its original position, driving the base 418 and the connecting column 416 to move downward synchronously, so that the connecting column 416 is disengaged from the pressure sensor 415. The pressure sensor 415 transmits the disconnection signal to the intelligent sensing module integrated in the transmitter 1. Then the transmitter 1 automatically controls the motor 411 to reverse, which drives the internal threaded sleeve 43 to rotate in the opposite direction through the transmission of the drive gear 412 and the driven gear 49, thereby driving the threaded drive. The moving block 44 drives the grounding rod 46 to move vertically upward, automatically pulling the grounding rod 46 out of the soil. During the upward reset process of the grounding rod 46, the collar 51, together with the scraper 52, scrapes away the soil embedded in the spiral cutting groove and the soil attached to the surface of the grounding rod 46, realizing automatic mud cleaning. When the grounding rod 46 is completely reset into the cylinder 41, the transmitter 1 controls the motor 411 to stop working, and then puts the cylinder 41 back into the storage rack 31 on the side of the transmitter 1. The pull rod 38 is released. At this time, the spring 35 loses pressure and rebounds. The locking pin 33 automatically pops out under the elastic force of the spring 35 and inserts into the insertion hole of the storage rack 31, completing the locking and storage of the insertion device 4.

[0050] Since the grounding rod 46 is inserted into the soil through the insertion device 4, replacing the traditional manual insertion of the grounding rod 46, when the insertion device 4 inserts the grounding rod 46, through the cooperation of the internal threaded sleeve 43, the threaded drive block 44 and the guide shaft 45, a single motor 411 can simultaneously realize the dual actions of the rotational cutting and vertical feeding of the grounding rod 46. This allows the grounding rod 46 to drill into the soil in a rotational cutting posture, which can directly break through the resistance of high-hardness soil layers without any soil softening pretreatment. This eliminates the ineffective waiting time for water infiltration, thereby improving work efficiency. It also avoids the problem that when encountering hard backfill soil, frozen soil and other scenarios, operators need to pour clean water or salt water to soften the soil at the insertion point. Water infiltration into the soil requires waiting, and the infiltration speed is affected by soil texture and ambient temperature, causing the insertion time of the grounding rod 46 to fluctuate with the soil conditions of the work area.

[0051] Among them, the main unit 11, the body 21, the controller integrated with the main unit 11 and the body 21, the operation panel 12, the control panel 22, the intelligent sensing module, the motor 411 and the pressure sensor 415 that make up the transmitter 1 and the receiver 2 are all existing technologies, and their working and control principles will not be elaborated here. For the connection parts between the parts, the connection methods such as welding, bolt fixing and interference fit can be selected according to the requirements of the connection position of the parts. In addition, for the parts in different positions, the materials suitable for their working environment can be selected according to the working conditions and requirements.

[0052] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. An underground pipeline detector, comprising a transmitter (1) and a receiver (2), characterized in that: The receiver (2) is located on one side of the transmitter (1), and a storage device (3) is provided on one side of the transmitter (1). A plug device (4) is provided on the storage device (3). The insertion device (4) includes a cylinder (41) mounted on a storage device (3). One end of the cylinder (41) is fixedly connected to a cylinder cover (42). An internally threaded sleeve (43) is rotatably connected to the inner wall of the cylinder (41). A threaded drive block (44) is internally threaded onto the internally threaded sleeve (43). A guide shaft (45) is fixedly connected inside the cylinder (41). A grounding rod (46) is movably connected to the inner wall of the threaded drive block (44). A spiral cutting groove is formed on the surface of the grounding rod (46). There are two connecting rings (47) arranged vertically in a fixed connection. A connecting sleeve (48) is fixedly connected to the upper surface of the internal threaded sleeve (43). The connecting sleeve (48) is slidably connected to the surface of the grounding rod (46). A driven gear (49) is fixedly connected to the upper surface of the connecting sleeve (48). A bracket (410) is fixedly connected to one side of the cylinder (41). A motor (411) is fixedly connected to the bracket (410). An active gear (412) adapted to the driven gear (49) is fixedly connected to the output end of the motor (411).

2. The underground pipeline detector according to claim 1, characterized in that: The transmitter (1) includes a host (11), and an operation panel (12) is fixedly connected to the host (11). The receiver (2) includes a body (21), and a control panel (22) is fixedly connected to the body (21). A handle (23) is fixedly connected between the body (21) and the control panel (22).

3. The underground pipeline detector according to claim 1, characterized in that: A protective cover (413) is fixedly connected to the upper surface of the cylinder head (42). The protective cover (413) is fixedly connected to the upper surface of the bracket (410). The output end of the motor (411) moves through the protective cover (413). The passive gear (49) and the active gear (412) are both located inside the protective cover (413). The passive gear (49) meshes with the active gear (412).

4. The underground pipeline detector according to claim 1, characterized in that: The lower surface of the cylinder (41) is provided with an assembly cavity (414). A pressure sensor (415) is fixedly connected to the inner wall of the assembly cavity (414). A connecting column (416) is slidably connected to the inner wall of the assembly cavity (414). A cover (417) is fixedly connected to the lower surface of the cylinder (41). The connecting column (416) slides through the cover (417). A base (418) is fixedly connected to one end of the connecting column (416) away from the cylinder (41). A second spring (419) is fixedly connected between the base (418) and the cover (417). The second spring (419) is sleeved on the connecting column (416).

5. The underground pipeline detector according to claim 4, characterized in that: A handle (420) is fixedly connected to the surface of the cylinder (41), the motor (411) abuts against the upper surface of the handle (420), and the base (418) slides in contact with the side surface of the handle (420).

6. The underground pipeline detector according to claim 5, characterized in that: The surface of the threaded drive block (44) is provided with a groove and a round hole. The guide shaft (45) is slidably connected to the inner wall of the round hole. The connecting ring (47) is rotatably connected to the inner wall of the groove. The connecting sleeve (48) is rotatably connected to the inner wall of the cylinder head (42). The inner wall of the connecting sleeve (48) is provided with a protrusion. The surface of the grounding rod (46) is provided with a sliding groove. The protrusion is slidably connected to the inner wall of the sliding groove. The passive gear (49) is slidably sleeved on the grounding rod (46). There are four pressure sensors (415). The four pressure sensors (415) are arranged in a circumferential array with reference to the grounding rod (46).

7. The underground pipeline detector according to claim 6, characterized in that: A cleaning device (5) is provided on the cover (417). The cleaning device (5) includes a collar (51) rotatably installed inside the cover (417). The inner wall of the collar (51) is fixedly connected to a scraper (52) adapted to a spiral cutting groove. The upper end of the scraper (52) is hemispherical and the lower end of the scraper (52) is semi-cylindrical. There are multiple scrapers (52), and the multiple scrapers (52) are arranged in a circumferential array with reference to the cover (417).

8. The underground pipeline detector according to claim 1, characterized in that: The storage device (3) includes a storage rack (31) fixed to one side of the transmitter (1), a mounting box (32) fixedly connected to the surface of the cylinder (41), a locking pin (33) slidably connected inside the mounting box (32), an insertion hole is provided on the side of the storage rack (31), the locking pin (33) is inserted into the insertion hole, a baffle (34) is fixedly connected to the side of the mounting box (32) away from the storage rack (31), a spring (35) is fixedly connected between the locking pin (33) and the baffle (34), a protrusion (36) is fixedly connected to the surface of the locking pin (33), a guide groove (310) is provided on the inner wall of the handle (420), a slider (39) is slidably connected to the inner wall of the guide groove (310), a pull rod (38) is fixedly connected to the surface of the slider (39), and a connecting bracket (37) adapted to the protrusion (36) is fixedly connected to the surface of the pull rod (38).

9. An underground pipeline detector according to claim 8, characterized in that: The locking pin (33) slides through one side of the mounting box (32), the mounting box (32) has a guide hole, the protrusion (36) is slidably connected to the guide hole, the surface of the connecting frame (37) has an oblique hole, and the protrusion (36) is slidably connected to the oblique hole.

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