Underground pipeline detector for natural gas pipeline detection

Abstract

The invention discloses an underground pipeline detector for natural gas pipeline detection, and particularly relates to the technical field of underground pipeline detectors, the underground pipeline detector comprises a cart, the top of the cart is fixedly connected with a detector transmission mechanism, and one side, far away from the detector transmission mechanism, of the top of the cart is fixedly connected with an anti-collision plate; the rear side of the cart is fixedly connected with a push handle, and the upper portion of the rear side of the cart is fixedly connected with a display screen, the cart, the detector transmission mechanism, the detector transmission main body, the detector containing plate and the limiting rod are arranged, rapid and accurate detection of underground pipelines can be achieved, operation is more convenient due to the design of the cart, and the detection efficiency is improved. The detector can easily move on the ground, a large amount of manpower and time are saved, the detector can automatically adjust the position of the detector relative to the ground due to the design of the detector transmission mechanism, and the purpose of automatically limiting the distance between the detector and the ground is achieved by adjusting the positions of the pressing rod and the pressing block.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipeline detectors, and more particularly to an underground pipeline detector for natural gas pipeline detection. Background Art

[0002] Without damaging the surface soil, the pipeline detector can quickly and accurately detect the location, direction, depth, and location and size of damaged spots in the steel pipeline's anti-corrosion coating, including underground water pipes, metal pipes, and cables. It is an essential instrument for water companies, gas companies, railway communications, municipal construction, industrial and mining enterprises, and infrastructure units involved in the renovation, maintenance, and survey of underground pipelines.

[0003] According to patent document: CN113219548A, a digital underground pipeline detector with a stable structure is disclosed, which includes a base and a detector. The detector is arranged on the top of the base, and a plurality of universal wheels are arranged at the bottom of the base. Handrails are arranged on both sides of the top of the base, and a manipulator is arranged on the top of the handrail. The manipulator is electrically connected to the detector. A directional wheel is rotatably arranged on one side of the bottom of the base, and an adjustment mechanism for locking the rotation direction of the directional wheel is provided on the handrail. A liquid outlet rack is provided on one side of the base, and a liquid spray device for marking the track is provided on the liquid outlet rack. This application has the effect of improving the convenience of using the underground pipeline detector;

[0004] When an existing underground pipeline detector for natural gas detection is used to detect an underground natural gas pipeline on the ground, the detector operator operates the instrument and needs to conduct multiple detections at different locations to obtain accurate pipeline location information. Generally, the detection unit is placed as close to the ground as possible to reduce detection errors, and then the detection unit is controlled and data is read through the display unit. However, some ground surfaces are not flat enough, which may cause a certain gap between the detector and the ground, which will increase detection errors and affect detection accuracy. In addition, when the detector moves downward and touches the ground, it is difficult to control the speed and position of the detector because the detector is set at the bottom. Therefore, it is difficult for the detector operator to accurately control the distance between the detector and the ground, which may cause friction between the detector and the ground, causing friction damage to the detector.

[0005] Most existing underground pipeline detectors for natural gas detection are pushed on carts for detection. However, workers need to observe data and operate in real time through the display screen, and it is difficult to observe whether there are obstacles on the ground. If the detector is accidentally hit by an obstacle during detection, it may be damaged, affecting the detection accuracy and the service life of the detector. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an underground pipeline detector for natural gas pipeline detection. The technical problem to be solved by the present invention is: some ground surfaces are not flat enough, which may cause a certain gap between the detector and the ground, which will increase the detection error and affect the detection accuracy. In addition, when the detector moves downward and sticks to the ground, since the detector is set at the bottom, it is not easy to control the speed and position of the detector moving downward. Therefore, it is difficult for the detector to accurately control the distance between the detector and the ground, which may cause friction between the detector and the ground, causing friction damage to the detector.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an underground pipeline detector for natural gas pipeline detection, comprising a cart, a detector transmission mechanism fixedly connected to the top of the cart, an anti-collision plate fixedly connected to the side of the top of the cart away from the detector transmission mechanism, a push handle fixedly connected to the rear side of the cart, and a display screen fixedly connected to the upper rear side of the cart;

[0008] The cart includes a cart bottom plate, the middle part of the cart bottom plate is hollowed out, the four sides of the bottom of the cart bottom plate are fixedly connected to universal wheels, the top of the cart bottom plate is fixedly connected to an L-shaped table top, the top of the L-shaped table top is fixedly connected to a motor placement block, the top of the L-shaped table top is fixedly connected to baffles on the front and rear sides away from the motor placement block, the left and right sides of the top of the L-shaped table top are respectively provided with extension grooves, and the surface of the L-shaped table top is provided with two second extension grooves.

[0009] As a further solution of the present invention: the detector transmission mechanism includes a detector transmission body, a detector placement plate is fixedly connected to the bottom of the detector transmission body, and a limit rod is fixedly connected to the bottom of the detector transmission body.

[0010] As a further solution of the present invention: the transmission body of the detector includes a motor, the bottom of the motor is fixedly connected to the top of the motor placement block, the output end of the motor extends to the front side of the rear baffle and is fixedly connected to a rotating rod, the front and rear ends of the rotating rod are respectively movably connected to the opposite sides of the two baffles, and the rotating rod is fixedly connected to the main gear on the outer walls of the opposite sides of the two baffles.

[0011] As a further solution of the present invention: two sub-gears are respectively engaged on both sides of the outer wall of the main gear, the opposite surfaces of the two groups of sub-gears are fixedly connected with a rotating shaft, and the inner walls of the two groups of sub-gears and the rotating shaft are fixedly connected with a second rotating rod, and the front and rear ends of the two second rotating rods are respectively movably connected to the left and right sides of the opposite surfaces of the two sub-gears.

[0012] As a further solution of the present invention: the outer walls of the two rotating shafts are fixedly connected with rocker arms, the sides of the two rocker arms away from the rotating shafts are rotatably connected with connecting rods, the bottoms of the two connecting rods are fixedly connected with pressure rods, the bottoms of the two pressure rods extend to the bottom of the L-shaped table through extension grooves, and the front and rear sides of the two connecting rods are respectively fixedly connected with pressure blocks.

[0013] As a further solution of the present invention: the limiting rod includes a limiting rod top rod, the top of the limiting rod top rod is fixedly connected to the bottom of the pressure block, the bottom of the limiting rod top rod extends to the bottom of the L-shaped table through the second extension groove, and the bottom of the limiting rod top rod is fixedly connected to the limiting connecting rod.

[0014] As a further solution of the present invention: the detector placement plate includes a detector placement plate body, the left and right sides of the bottom of the inner wall of the detector placement plate body are respectively fixedly connected to the bottom of the two pressure rods, the front and back sides of the left and right sides of the bottom of the inner wall of the detector placement plate body are respectively provided with placement plate extension grooves, the bottom of the inner wall of the detector placement plate body is provided with a slide groove, the rear side of the detector placement plate body is fixedly connected to a turntable motor placement block, the inner wall of the turntable motor placement block is fixedly connected to a turntable motor, the output end of the turntable motor is fixedly connected to a turntable, and the top of the turntable is fixed The cam is fixedly connected to the chassis, and the outer wall of the cam is slidably connected to the swing shaft. The front side of the swing shaft is fixedly connected to the L-shaped connecting rod, and the inner wall of the L-shaped connecting rod is fixedly connected to the axial rotating rod. The bottom of the axial rotating rod is movably connected to the bottom of the inner wall of the detector placement plate body. The bottom of the L-shaped connecting rod is fixedly connected to the detector push-pull block, and the bottom of the detector push-pull block is fixedly connected to the detector connecting block. The bottom of the detector connecting block extends to the bottom of the detector placement plate body through a slide groove and is fixedly connected to the detector. The outer wall of the detector connecting block is slidably connected to the inner wall of the slide groove.

[0015] As a further solution of the present invention: the outer wall of the limit connecting rod extends to the bottom of the detector placement plate body through the placement plate extension groove, the bottom of the limit connecting rod is fixedly connected to the limit external shaft, the top of the limit external shaft is fixedly connected to a spring, the inner wall of the spring is movably connected to the outer wall of the limit connecting rod, and the bottom of the limit external shaft is fixedly connected to the ground contact rod.

[0016] As a further solution of the present invention: the anti-collision plate includes an anti-collision plate main body, and the left and right sides of the inner wall of the anti-collision plate main body are respectively provided with anti-collision plate slide grooves, and the front side of the anti-collision plate main body is provided with an anti-collision plate front groove, and the bottom of the inner wall of the anti-collision plate main body is fixedly connected to the double-axis motor, and the left and right output ends of the double-axis motor are respectively fixedly connected to conical teeth, and the outer walls of the two conical teeth away from the side of the double-axis motor are meshed with the second conical teeth, and the inner walls of the two second conical teeth are fixedly connected to a screw rod, and the front and rear ends of the two screw rods are respectively movably connected to the front and rear sides of the inner wall of the anti-collision plate main body, and the outer walls of the two screw rods are threadedly connected to the transmission rods, and the opposite surfaces of the two transmission rods are fixedly connected to the transmission rod sliders, and the outer walls of the two transmission rod sliders are slidably connected to the inner wall of the anti-collision plate slide groove, and the opposite surfaces of the two transmission rods are fixedly connected to the anti-collision outer plates.

[0017] Preferably, two second springs are fixedly connected to the rear side of the inner wall of the anti-collision outer plate, and the front ends of the two second springs are fixedly connected to a shock-absorbing plate. The outer wall of the shock-absorbing plate is slidably connected to the inner wall of the anti-collision outer plate, and the front side of the shock-absorbing plate extends to the outer wall of the anti-collision plate body through the front groove of the anti-collision plate and is fixedly connected to an obstacle detection plate.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention is capable of realizing rapid and accurate detection of underground pipelines by providing a trolley, a detector transmission mechanism, a detector transmission body, a detector placement plate, and a limit rod. The design of the trolley makes the operation more convenient and can be easily moved on the ground, saving a lot of manpower and time. The design of the detector transmission mechanism enables the detector to automatically adjust its position relative to the ground, thereby improving the accuracy and efficiency of detection. By adjusting the position of the pressure rod and the pressure block, the purpose of automatically limiting the distance between the detector and the ground is achieved, preventing the detector from being too close to the ground and causing damage. At the same time, through the drive of the turntable motor, the detector can move back and forth left and right in the horizontal direction, thereby realizing detection of underground pipelines over a wider range.

[0020] 2. By providing an anti-collision plate, it can effectively prevent collisions with obstacles during the detection process, protecting the safety of the entire device. The design of the anti-collision plate allows the anti-collision outer plate to be squeezed and moved inward when encountering an obstacle, thereby triggering the buffering effect of the second spring and reducing the impact on the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention;

[0022] Figure 2 This is a schematic diagram of a three-dimensional cross-sectional structure of the cart of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the transmission mechanism of the three-dimensional detector of the present invention;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the transmission body of the detector of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting rod of the present invention;

[0026] Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure of a three-dimensional detector placement plate of the present invention;

[0027] Figure 7 The figure is a schematic diagram of a three-dimensional cross-sectional structure of the anti-collision plate of the present invention.

[0028] In the figure: 1. trolley; 11. trolley bottom plate; 12. universal wheel; 13. L-shaped table; 14. baffle; 15. motor placement block; 16. extension slot; 17. second extension slot; 2. push handle; 3. detector transmission mechanism; 31. detector transmission body; 311. motor; 312. rotating rod; 313. main gear; 314. secondary gear; 315. rotating shaft; 316. rocker rod; 317. second rotating rod; 318. connecting rod; 319. pressure rod; 3110. pressure block; 32. detector placement plate; 321. detector placement plate body; 322. slide slot; 323. placement plate extension slot; 324. turntable motor placement block; 325. turntable motor; 326. turntable; 327. clamping rod ; 328. Swing shaft; 329. L-shaped connecting rod; 3210. Axis rotating rod; 3211. Detector push-pull block; 3212. Detector connecting block; 3213. Detector; 33. Limit rod; 331. Limit rod top rod; 332. Limit connecting rod; 333. Limit outer shaft; 334. Spring; 335. Ground contact rod; 4. Anti-collision plate; 41. Anti-collision plate body; 42. Anti-collision plate slide; 43. Dual-axis motor; 44. Conical teeth; 45. Second conical teeth; 46. Screw; 47. Transmission rod; 48. Transmission rod slider; 49. Anti-collision outer plate; 410. Second spring; 411. Shock-absorbing plate; 412. Anti-collision plate front groove; 413. Obstacle detection plate; 5. Display screen. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1-7 As shown, the present invention provides an underground pipeline detector for natural gas pipeline detection, including a cart 1, a detector transmission mechanism 3 is fixedly connected to the top of the cart 1, an anti-collision plate 4 is fixedly connected to the side of the top of the cart 1 away from the detector transmission mechanism 3, a push handle 2 is fixedly connected to the rear side of the cart 1, and a display screen 5 is fixedly connected to the upper rear side of the cart 1.

[0031] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6As shown, the cart 1 includes a cart bottom plate 11, the middle of the cart bottom plate 11 is hollowed out, the four sides of the bottom of the cart bottom plate 11 are fixedly connected with universal wheels 12, the top of the cart bottom plate 11 is fixedly connected with an L-shaped table top 13, the top of the L-shaped table top 13 is fixedly connected with a motor placement block 15, the top of the L-shaped table top 13 away from the front and rear sides of the motor placement block 15 are fixedly connected with baffles 14, the left and right sides of the top of the L-shaped table top 13 are respectively provided with extension grooves 16, and the surface of the L-shaped table top 13 is provided with two second extension grooves 17. The detector transmission mechanism 3 includes a detector transmission body 31, the bottom of the detector transmission body 31 is fixedly connected with a detector placement plate 32, the bottom of the detector transmission body 31 is fixedly connected with a limit rod 33, and the detector The instrument transmission body 31 includes a motor 311, the bottom of the motor 311 is fixedly connected to the top of the motor placement block 15, the output end of the motor 311 extends to the front side of the rear baffle 14 and is fixedly connected to a rotating rod 312, the front and rear ends of the rotating rod 312 are respectively movably connected to the opposite sides of the two baffles 14, the rotating rod 312 is fixedly connected to the outer wall of the opposite sides of the two baffles 14 with a main gear 313, the two sides of the outer wall of the main gear 313 are respectively engaged with two sub-gears 314, the opposite sides of the two sets of sub-gears 314 are fixedly connected to a rotating shaft 315, the two sets of sub-gears 314 and the inner wall of the rotating shaft 315 are fixedly connected to a second rotating rod 317, the front and rear ends of the two second rotating rods 317 are respectively movably connected to the left and right sides of the opposite sides of the two sub-gears 314, and the two The outer wall of each rotating shaft 315 is fixedly connected with a rocker rod 316, and the two rocker rods 316 are rotatably connected to the side of the rotating shaft 315. The bottom of the two connecting rods 318 is fixedly connected with a pressure rod 319, and the bottom of the two pressure rods 319 extends to the bottom of the L-shaped table 13 through the extension groove 16. The front and rear sides of the two connecting rods 318 are respectively fixedly connected with a pressure block 3110. The limiting rod 33 includes a limiting rod top rod 331, the top of the limiting rod top rod 331 is fixedly connected to the bottom of the pressure block 3110, and the bottom of the limiting rod top rod 331 extends to the bottom of the L-shaped table 13 through the second extension groove 17. The bottom of the limiting rod top rod 331 is fixedly connected to the limiting connecting rod 332. The detector placement plate 32 includes a detector placement The plate body 321, the left and right sides of the bottom of the inner wall of the detector placement plate body 321 are respectively fixedly connected to the bottom of the two pressure rods 319, and the front and rear sides of the left and right sides of the bottom of the inner wall of the detector placement plate body 321 are respectively provided with a placement plate extension groove 323, and the bottom of the inner wall of the detector placement plate body 321 is provided with a slide groove 322. The rear side of the detector placement plate body 321 is fixedly connected to the turntable motor placement block 324, and the inner wall of the turntable motor placement block 324 is fixedly connected to the turntable motor 325. The output end of the turntable motor 325 is fixedly connected to the turntable 326, and the top of the turntable 326 is fixedly connected to the clamping rod 327. The outer wall of the clamping rod 327 is slidably connected to the swing shaft 328, and the front side of the swing shaft 328 is fixedly connected to the L-shaped connecting rod 329.The inner wall of the L-shaped connecting rod 329 is fixedly connected to the axis rotating rod 3210, and the bottom of the axis rotating rod 3210 is movably connected to the bottom of the inner wall of the detector placement plate body 321. The bottom of the L-shaped connecting rod 329 is fixedly connected to the detector push-pull block 3211, and the bottom of the detector push-pull block 3211 is fixedly connected to the detector connection block 3212. The bottom of the detector connection block 3212 extends to the bottom of the detector placement plate body 321 through the slide groove 322 and is fixedly connected to the detector 321. 3. The outer wall of the detector connecting block 3212 is slidably connected to the inner wall of the slide groove 322. The outer wall of the limit connecting rod 332 extends to the bottom of the detector placement plate body 321 through the placement plate extension groove 323. The bottom of the limit connecting rod 332 is fixedly connected to the limit outer shaft 333. The top of the limit outer shaft 333 is fixedly connected to a spring 334. The inner wall of the spring 334 is movably connected to the outer wall of the limit connecting rod 332. The bottom of the limit outer shaft 333 is fixedly connected to a ground contact rod 335.

[0032] The cart bottom plate 11 moves through the four universal wheels 12 at the bottom. When the position of the detector 3213 needs to be adjusted, the motor 311 is started, and the output end of the motor 311 drives the rotating rod 312 to rotate. The rotating rod 312 drives the main gear 313 to rotate. The main gear 313 is engaged with the two sub-gears 314, so that the two sub-gears 314 respectively drive the two rotating shafts 315 to rotate. The two rotating shafts 315 respectively drive the two rocking rods 316 to rotate. The two rocking rods 316 transmit force to the The detector placement plate body 321 allows the detector placement plate body 321 to move downward, thereby adjusting the position of the detector 3213. At the same time, the two pressing blocks 3110 also move with the movement of the connecting rod 318, thereby transmitting force to the ground contact rod 335 through the limiting rod top rod 331 and the limiting connecting rod 332. The bottom of the ground contact rod 335 contacts the ground, and the limiting outer shaft 333 limits the lowest landing point of the detector placement plate body 321, thereby preventing the detector 3213 from contacting the ground and being damaged.

[0033] In addition, when the cart base plate 11 moves, the turntable motor 325 remains in the started state, and the output end of the turntable motor 325 drives the turntable 326 to rotate, and the turntable 326 drives the clamping rod 327 to rotate. The clamping rod 327 rotates and slides on the inner wall of the swing shaft 328, so that the swing shaft 328 drives the L-shaped connecting rod 329 to swing with the axial rotating rod 3210 as the axis, thereby driving the detector push-pull block 3211 to drive the detector connecting block 3212 to slide on the inner wall of the slide groove 322, and then causing the detector 3213 to slide on the bottom of the detector placement plate body 321, so that the detector 3213 moves left and right all the time. This design enables the detector 3213 to continue scanning or detecting during the movement, thereby improving work efficiency. At the same time, since the detector 3213 always remains in a working state during the movement, it also reduces the mechanical wear caused by frequent starting and stopping, thereby extending the service life of the equipment.

[0034] like Figure 2 and Figure 7 As shown, the anti-collision plate 4 includes an anti-collision plate main body 41, and anti-collision plate slide grooves 42 are respectively opened on the left and right sides of the inner wall of the anti-collision plate main body 41, and an anti-collision plate front groove 412 is opened on the front side of the anti-collision plate main body 41. The bottom of the inner wall of the anti-collision plate main body 41 is fixedly connected to a dual-axis motor 43, and the left and right output ends of the dual-axis motor 43 are respectively fixedly connected to conical teeth 44, and the outer walls of the two conical teeth 44 are engaged with the second conical teeth 45 on the side away from the dual-axis motor 43. The inner walls of the two second conical teeth 45 are fixedly connected with screw rods 46, and the front and rear ends of the two screw rods 46 are respectively movably connected to the front and rear sides of the inner wall of the anti-collision plate main body 41. 6 are all threadedly connected with transmission rods 47, and the opposite surfaces of the two transmission rods 47 are fixedly connected with transmission rod sliders 48, and the outer walls of the two transmission rod sliders 48 are slidably connected to the inner wall of the anti-collision plate slide groove 42, and the opposite surfaces of the two transmission rods 47 are fixedly connected with the anti-collision outer plate 49, and the rear sides of the inner walls of the anti-collision outer plate 49 are respectively fixedly connected with two second springs 410, and the front ends of the two second springs 410 are fixedly connected with a shock-absorbing plate 411, and the outer wall of the shock-absorbing plate 411 is slidably connected to the inner wall of the anti-collision outer plate 49, and the front side of the shock-absorbing plate 411 extends to the outer wall of the anti-collision plate body 41 through the anti-collision plate front groove 412 and is fixedly connected with an obstacle detection plate 413;

[0035] Start the dual-axis motor 43, and the left and right output ends of the dual-axis motor 43 respectively drive the two conical teeth 44 to rotate. The two conical teeth 44 are respectively engaged with the two second conical teeth 45, so that the two second conical teeth 45 respectively drive the two screw rods 46 to rotate. Since the outer walls of the two screw rods 46 are threadedly connected to the transmission rods 47, and the opposite surfaces of the two transmission rods 47 are fixedly connected to the transmission rod sliders 48, the outer walls of the transmission rod sliders 48 are slidably connected to the inner walls of the anti-collision plate slots 42, the rotation of the two screw rods 46 will drive the two transmission rods 47 to move, thereby Adjust the distance between the anti-collision outer plate 49 to adjust the position of the obstacle detection plate 413. At the same time, since the obstacle detection plate 413 is fixedly connected to the front side of the shock-absorbing plate 411, and the outer wall of the shock-absorbing plate 411 is slidably connected to the inner wall of the anti-collision outer plate 49, the front end of the second spring 410 is fixedly connected to the rear side of the shock-absorbing plate 411. Therefore, when an obstacle contacts the obstacle detection plate 413, the shock-absorbing plate 411 will slide on the inner wall of the anti-collision outer plate 49 and compress the second spring 410, thereby playing a role of shock absorption and buffering, thereby protecting the obstacle detection plate 413 and the obstacle from damage;

[0036] In addition, in order to further improve the anti-collision effect, shock-absorbing springs and shock-absorbing rubber are set on the inner wall of the anti-collision outer plate 49 to better absorb and disperse the impact force. At the same time, in order to ensure the sensitivity and reliability of the obstacle detection plate 413, the obstacle detection plate 413 is made of lightweight, wear-resistant and impact-resistant materials to improve its service life and stability.

[0037] The working principle of the present invention is as follows: the cart bottom plate 11 moves through the four universal wheels 12 at the bottom. When the position of the detector 3213 needs to be adjusted, the motor 311 is started, and the output end of the motor 311 drives the rotating rod 312 to rotate, and the rotating rod 312 drives the main gear 313 to rotate. The main gear 313 is engaged with the two sub-gears 314, so that the two sub-gears 314 respectively drive the two rotating shafts 315 to rotate, and the two rotating shafts 315 respectively drive the two swing rods 316 to rotate. The two swing rods 316 are connected by the connecting rod 318 and the pressure rod 319. The force is transmitted to the detector placement plate body 321, so that the detector placement plate body 321 can move downward, thereby adjusting the position of the detector 3213. At the same time, the two pressing blocks 3110 also move with the movement of the connecting rod 318, thereby transmitting the force to the ground contact rod 335 through the limiting rod top rod 331 and the limiting connecting rod 332. The bottom of the ground contact rod 335 contacts the ground, and the limiting outer shaft 333 limits the lowest landing point of the detector placement plate body 321, preventing the detector 3213 from contacting the ground and being damaged.

[0038] The cam 327 is rotated to move the cam 328 so that the cam 328 can move the cam 329 to the left and right.

[0039] Before pushing the whole, first start the double-axis motor 43, and the left and right output ends of the double-axis motor 43 respectively drive the two conical teeth 44 to rotate, and the two conical teeth 44 are respectively engaged with the two second conical teeth 45, so that the two second conical teeth 45 respectively drive the two screw rods 46 to rotate. Since the outer walls of the two screw rods 46 are threadedly connected to the transmission rod 47, and the opposite surfaces of the two transmission rods 47 are fixedly connected to the transmission rod slider 48, the outer wall of the transmission rod slider 48 is slidably connected to the inner wall of the anti-collision plate slide 42, the rotation of the two screw rods 46 will drive the two transmission rods 47 The second spring 410 is fixedly connected to the rear side of the shock absorbing plate 411, so when the obstacle contacts the obstacle detection plate 413, the shock absorbing plate 411 will slide on the inner wall of the anti-collision outer plate 49 and compress the second spring 410, thereby playing the role of shock absorption and buffering, thereby protecting the obstacle detection plate 413 and the obstacle from damage.

[0040] In addition, in order to further improve the anti-collision effect, shock-absorbing springs and shock-absorbing rubber are set on the inner wall of the anti-collision outer plate 49 to better absorb and disperse the impact force. At the same time, in order to ensure the sensitivity and reliability of the obstacle detection plate 413, the obstacle detection plate 413 is made of lightweight, wear-resistant and impact-resistant materials to improve its service life and stability.

[0041] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0042] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0043] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An underground pipeline detector for natural gas pipeline detection, comprising a cart (1), characterized in that: The top of the cart (1) is fixedly connected to a detector transmission mechanism (3), a side of the top of the cart (1) away from the detector transmission mechanism (3) is fixedly connected to an anti-collision plate (4), a rear side of the cart (1) is fixedly connected to a push handle (2), and a display screen (5) is fixedly connected to the upper rear side of the cart (1); The cart (1) includes a cart bottom plate (11), the middle part of the cart bottom plate (11) is hollowed out, the four sides of the bottom of the cart bottom plate (11) are fixedly connected with universal wheels (12), the top of the cart bottom plate (11) is fixedly connected with an L-shaped table top (13), the top of the L-shaped table top (13) is fixedly connected with a motor placement block (15), the top of the L-shaped table top (13) away from the motor placement block (15) is fixedly connected with baffles (14), the left and right sides of the top of the L-shaped table top (13) are respectively provided with extension grooves (16), and the surface of the L-shaped table top (13) is provided with two second extension grooves (17).

2. The underground pipeline detector for natural gas pipeline detection according to claim 1, characterized in that: The detector transmission mechanism (3) comprises a detector transmission body (31), the bottom of the detector transmission body (31) is fixedly connected to a detector placement plate (32), and the bottom of the detector transmission body (31) is fixedly connected to a limit rod (33).

3. The underground pipeline detector for natural gas pipeline detection according to claim 2, characterized in that: The detector transmission body (31) includes a motor (311), the bottom of the motor (311) is fixedly connected to the top of the motor placement block (15), the output end of the motor (311) extends to the front side of the rear baffle (14) and is fixedly connected to a rotating rod (312), the front and rear ends of the rotating rod (312) are movably connected to the opposite sides of the two baffles (14), and the rotating rod (312) is fixedly connected to the outer walls of the opposite sides of the two baffles (14). A main gear (313) is fixedly connected to the outer walls of the opposite sides of the two baffles (14).

4. The underground pipeline detector for natural gas pipeline detection according to claim 3, characterized in that: Two sub-gears (314) are respectively engaged on both sides of the outer wall of the main gear (313); opposite surfaces of the two sets of sub-gears (314) are fixedly connected with a rotating shaft (315); the inner walls of the two sets of sub-gears (314) and the rotating shaft (315) are fixedly connected with a second rotating rod (317); the front and rear ends of the two second rotating rods (317) are respectively movably connected to the left and right sides of the opposite surfaces of the two sub-gears (314).

5. The underground pipeline detector for natural gas pipeline detection according to claim 4, characterized in that: The outer walls of the two rotating shafts (315) are fixedly connected to rocking rods (316), and the sides of the two rocking rods (316) away from the rotating shafts (315) are rotatably connected to connecting rods (318). The bottoms of the two connecting rods (318) are fixedly connected to pressure rods (319), and the bottoms of the two pressure rods (319) extend to the bottom of the L-shaped table (13) through extension grooves (16). The front and rear sides of the two connecting rods (318) are respectively fixedly connected to pressure blocks (3110).

6. The underground pipeline detector for natural gas pipeline detection according to claim 2, characterized in that: The limiting rod (33) includes a limiting rod top rod (331), the top of the limiting rod top rod (331) is fixedly connected to the bottom of the pressing block (3110), the bottom of the limiting rod top rod (331) extends to the bottom of the L-shaped table (13) through the second extension groove (17), and the bottom of the limiting rod top rod (331) is fixedly connected to the limiting connecting rod (332).

7. The underground pipeline detector for natural gas pipeline detection according to claim 2, characterized in that: The detector placement plate (32) includes a detector placement plate body (321), the left and right sides of the bottom of the inner wall of the detector placement plate body (321) are respectively fixedly connected to the bottoms of two pressure rods (319), the front and rear sides of the left and right sides of the bottom of the inner wall of the detector placement plate body (321) are respectively provided with placement plate extension grooves (323), the bottom of the inner wall of the detector placement plate body (321) is provided with a slide groove (322), the rear side of the detector placement plate body (321) is fixedly connected to a turntable motor placement block (324), the inner wall of the turntable motor placement block (324) is fixedly connected to a turntable motor (325), the output end of the turntable motor (325) is fixedly connected to a turntable (326), the top of the turntable (326) is fixedly connected to a clamping rod (327), the clamping rod (327) is fixedly connected to the top of the turntable (326), and the clamping rod (327) is fixedly connected to the bottom of the inner wall of the detector placement plate body (321). ) is slidably connected to the outer wall of a swing shaft (328), the front side of the swing shaft (328) is fixedly connected to an L-shaped connecting rod (329), the inner wall of the L-shaped connecting rod (329) is fixedly connected to an axial rotating rod (3210), the bottom of the axial rotating rod (3210) is movably connected to the bottom of the inner wall of the detector placement plate body (321), the bottom of the L-shaped connecting rod (329) is fixedly connected to a detector push-pull block (3211), the bottom of the detector push-pull block (3211) is fixedly connected to a detector connecting block (3212), the bottom of the detector connecting block (3212) extends to the bottom of the detector placement plate body (321) through a sliding groove (322) and is fixedly connected to a detector (3213), and the outer wall of the detector connecting block (3212) is slidably connected to the inner wall of the sliding groove (322).

8. The underground pipeline detector for natural gas pipeline detection according to claim 6, characterized in that: The outer wall of the limiting connecting rod (332) extends to the bottom of the detector placement plate body (321) through the placement plate extension groove (323); the bottom of the limiting connecting rod (332) is fixedly connected to the limiting outer shaft (333); the top of the limiting outer shaft (333) is fixedly connected to a spring (334); the inner wall of the spring (334) is movably connected to the outer wall of the limiting connecting rod (332); and the bottom of the limiting outer shaft (333) is fixedly connected to a ground contact rod (335).

9. The underground pipeline detector for natural gas pipeline detection according to claim 1, characterized in that: The anti-collision plate (4) includes an anti-collision plate body (41), and anti-collision plate sliding grooves (42) are respectively provided on the left and right sides of the inner wall of the anti-collision plate body (41), and an anti-collision plate front groove (412) is provided on the front side of the anti-collision plate body (41). A dual-axis motor (43) is fixedly connected to the bottom of the inner wall of the anti-collision plate body (41), and the left and right output ends of the dual-axis motor (43) are respectively fixedly connected to conical teeth (44), and the outer walls of the two conical teeth (44) are engaged with the second conical teeth (45) on the side away from the dual-axis motor (43). The inner walls of the two second conical teeth (45) are fixedly connected with screw rods (46), and the front and rear ends of the two screw rods (46) are movably connected to the front and rear sides of the inner wall of the anti-collision plate body (41). The outer walls of the two screw rods (46) are threadedly connected with transmission rods (47), and the opposite surfaces of the two transmission rods (47) are fixedly connected with transmission rod sliders (48). The outer walls of the two transmission rod sliders (48) are slidably connected to the inner wall of the anti-collision plate slide groove (42), and the opposite surfaces of the two transmission rods (47) are fixedly connected with anti-collision outer plates (49).

10. The underground pipeline detector for natural gas pipeline detection according to claim 9, characterized in that: Two second springs (410) are fixedly connected to the rear side of the inner wall of the anti-collision outer plate (49), and the front ends of the two second springs (410) are fixedly connected to a shock-absorbing plate (411). The outer wall of the shock-absorbing plate (411) is slidably connected to the inner wall of the anti-collision outer plate (49). The front side of the shock-absorbing plate (411) extends to the outer wall of the anti-collision plate body (41) through the anti-collision plate front groove (412) and is fixedly connected to an obstacle detection plate (413).

Images