A traction-type underground pipeline detector and its traction motion detection method

Abstract

The present invention relates to the technical field of underground pipeline detection, and specifically to a traction-type underground pipeline detector and a traction motion detection method thereof, comprising an extension device and a detection device, wherein the extension device comprises a clamping assembly clamped on the outer wall of the end of the underground pipeline and a driving assembly driving a plurality of linearly connected extension rods to extend laterally, and the detection device comprises a connecting block fixed on the extension rod and a probe for detection, and the beneficial effect is as follows: by providing a connecting device with a traction rope, the traction rope can be adjusted by rotating a pay-off wheel group, so that the free end of the extension rod moves upward under the action of traction force, balancing the falling gravity of the end of the extension rod, so that the extension rod maintains a laterally parallel extension, and ensures the stability of detection.

Description

Technical Field

[0001] The present invention relates to the technical field of underground pipeline detection, in particular to a traction-type underground pipeline detector and a traction motion detection method thereof. Background Art

[0002] In order to improve the safety of transmission cables, most of the existing cables are laid underground and protected by underground pipelines.

[0003] However, although underground laying can save space, it creates great obstacles to cable detection and maintenance.

[0004] Most of the existing technologies use extended detection devices to detect the inside of the pipeline. However, as the length of the pipeline increases, the center of gravity of the extended rod shifts, and the detection device at the end has a heavier gravity, causing the end to bend downward, causing the detection position to shift, and then collide with the inner wall of the pipeline, making it impossible to achieve horizontal parallel extension detection. Summary of the invention

[0005] The object of the present invention is to provide a traction-type underground pipeline detector and a traction motion detection method thereof, so as to solve the problem of supporting the falling end of an extension rod.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A traction-type underground pipeline detector, comprising an extension device and a detection device, wherein the extension device comprises a clamping assembly clamped on the outer wall of the end of the underground pipeline and a driving assembly driving a plurality of linearly connected extension rods to extend transversely, and the detection device comprises a connecting block fixed on the extension rod and a probe for detection;

[0008] The clamping assembly includes a fixed arc plate that fits the inner wall of the underground pipeline and a sliding arc plate that can be raised and lowered and fits the outer wall of the upper end of the underground pipeline, and the sliding arc plate is fixedly clamped on the underground pipeline by a fastening screw;

[0009] The driving assembly comprises an extension rod with a rack that is inserted and slidably connected transversely and a driving gear that is driven by a motor and meshes with the rack. A pay-off wheel assembly located at the upper end of the extension rod is arranged between the driving assembly and the clamping assembly.

[0010] The probe is installed at the lower end of the connecting block, and a traction rope connected with the pay-off wheel group is arranged on the outer wall of the end of the connecting block.

[0011] Preferably, the upper end of the probe is mounted on the lower end of the connecting block through a telescopic rod, the upper end of the connecting block is provided with a mounting hole, the upper end of the connecting block is provided with a traction wheel, the traction rope extends along the traction wheel to the pay-off wheel group, and the end of the extension rod is inserted into the mounting hole and fixedly connected by a fastening nut.

[0012] Preferably, an adjusting arc plate with an inner gear ring is provided at the upper end of the telescopic rod, an outer gear ring is provided at the lower end of the connecting block, the adjusting arc plate is meshingly sleeved on the outer gear ring, and a pair of elastic bands symmetrically arranged front and back are provided at the upper end of the adjusting arc plate.

[0013] Preferably, guide wheels are provided on the front and rear outer walls of the upper end of the connecting block, and a steering rope is provided on the upper ends of a pair of elastic bands distributed front and back, and the steering rope extends laterally along the guide wheel to the pay-off wheel group.

[0014] Preferably, a square plug is provided at one end of the extension rod, and a slot that cooperates with the square plug is provided at the other end of the extension rod. Threaded holes are penetrated on the upper inner wall of the slot and the square plug, and a pair of adjacent extension rods distributed linearly are fixedly connected by limiting bolts inserted in the threaded holes.

[0015] Preferably, the fixed arc plate is transversely fixed on the clamping assembly, and the upper end of the fixed arc plate is vertically provided with a slide groove opened on the side wall of the clamping assembly, one end of the sliding arc plate is slidably inserted in the slide groove, and the upper end of the sliding arc plate is vertically provided with a fastening screw threadedly rotatably installed on the clamping assembly, and the lower end of the fastening screw is pressed on the upper arc-shaped outer wall of the sliding arc plate.

[0016] Preferably, a pair of left-right symmetrical hinge seats are provided at the upper end of the extension rod, a rotating frame is rotatably mounted on the hinge seat, one end of the rotating frame is provided with a sleeve rotatably plugged into the hinge seat, a wire arrangement wheel group is installed in the middle position of the rotating frame, and the rear side of the rotating frame is fixed to the outer wall of the upper end of the extension rod by fastening screws.

[0017] Preferably, three sets of rotating wheels are provided in the pay-out wheel group and the line-arranging wheel group, and the rotating wheels on the pay-out wheel group and the line-arranging wheel group correspond to the traction rope and a pair of front-to-back symmetrical steering ropes respectively, the traction rope and the steering rope extend from the line-arranging wheel group to the pay-out wheel group, and the ends of the traction rope and the steering rope are both wound around the pay-out wheel group, and the three sets of rotating wheels in the pay-out wheel group are individually rotatably mounted through bearings.

[0018] Preferably, a pair of front-to-back symmetrical limiting grooves are provided on the clamping assembly, and the front and rear outer walls of the extension rod are provided with positioning side strips which are slidably inserted in the limiting grooves.

[0019] A detection method implemented according to the above-mentioned traction-type underground pipeline detector, the detection method comprises the following steps:

[0020] Position installation, the extension device is fixedly installed on the underground pipeline port through the clamping assembly, and the extension rod and the detection device are fixedly connected through the connecting block;

[0021] Drive extension, through the meshing of the driving gear and the rack, drive the extension rod to extend to the inside of the underground pipeline for detection;

[0022] The line-paying and traction is carried out by controlling the rotation of the line-paying wheel group to adjust the traction rope, thereby providing an upward traction force to the detection device.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a connecting device with a traction rope, so that the traction rope can be adjusted by rotating the pay-off wheel group, so that the free end of the extension rod moves upward under the action of traction force, balancing the falling gravity of the end of the extension rod, so that the extension rod maintains a horizontal parallel extension, thereby ensuring the stability of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the detection device of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the extension device of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the cable arrangement wheel assembly of the present invention;

[0029] Figure 5 It is a schematic diagram of the extension rod structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the extension rod of the present invention;

[0031] Figure 7 It is a side view of the three-dimensional structure of the extension device of the present invention.

[0032] In the figure: 1. underground pipeline; 2. clamping assembly; 3. wire-laying wheel group; 4. driving assembly; 5. driving gear; 6. extension rod; 7. wire-laying wheel group; 8. connecting block; 9. elastic band; 10. telescopic rod; 11. probe; 12. fastening nut; 13. traction wheel; 14. guide wheel; 15. traction rope; 16. adjustment rope; 17. positioning side strip; 18. rack; 19. mounting hole; 20. adjusting arc plate; 21. fastening screw; 22. limiting groove; 23. sliding arc plate; 24. slide groove; 25. fixed arc plate; 26. sleeve; 27. rotating frame; 28. outer gear ring; 29. ​​slot; 30. threaded hole; 31. hinge seat; 32. square plug column; 33. limiting bolt. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 7 , the present invention provides a technical solution:

[0035] A traction-type underground pipeline detector includes an extension device and a detection device. The extension device includes a clamping assembly 2 clamped on the outer wall of the end of an underground pipeline 1 and a driving assembly 4 driving a plurality of linearly connected extension rods 6 to extend laterally. The detection device includes a connecting block 8 fixed on the extension rod 6 and a probe 11 for detection. The extension rod 6 is driven to extend laterally by the driving assembly 4, so that the probe 11 can detect and inspect the cables in the underground pipeline 1.

[0036] A mounting hole 19 is provided at the upper end of the connecting block 8, and a traction wheel 13 is provided at the upper end of the connecting block 8. The traction rope 15 extends along the traction wheel 13 to the pay-off wheel group 3. The end of the extension rod 6 is inserted into the mounting hole 19 and fixedly connected by a fastening nut 12. The mounting hole 19 and the fastening nut 12 cooperate to achieve fixed installation of the extension rod 6 and the connecting block 8. By setting the traction wheel 13, the force of the traction rope 15 is kept vertically upward, thereby achieving the purpose of stretching and traction.

[0037] The clamping assembly 2 includes a fixed arc plate 25 that fits the inner wall of the underground pipeline 1 and a sliding arc plate 23 that can be raised and lowered and fits the outer wall of the upper end of the underground pipeline 1. The sliding arc plate 23 is fixedly clamped on the underground pipeline 1 by a fastening screw 21. The fixed arc plate 25 is laterally fixed on the clamping assembly 2. The upper end of the fixed arc plate 25 is vertically provided with a slide groove 24 opened on the side wall of the clamping assembly 2. One end of the sliding arc plate 23 is slidably inserted in the slide groove 24. The upper end of the sliding arc plate 23 is vertically provided with a fastening screw 21 that is threaded and rotatably installed on the clamping assembly 2. The lower end of the fastening screw 21 is pressed on the upper arc-shaped outer wall of the sliding arc plate 23. The cooperation of the slide groove 24 and the sliding arc plate 23 makes the clamping assembly 2 suitable for the clamping and fastening installation of underground pipelines 1 of different thicknesses. The clamping assembly 2 is fixedly installed at the port position of the underground pipeline 1 by the extrusion of the fastening screw 21.

[0038] The driving assembly 4 includes an extension rod 6 with a rack 18 that is inserted and slidably connected transversely and a driving gear 5 that is driven by a motor and meshes with the rack 18. The meshing of the driving gear 5 and the rack 18 realizes the transverse driving of the extension rod 6.

[0039] A pay-off wheel group 3 located at the upper end of the extension rod 6 is provided between the driving assembly 4 and the clamping assembly 2, and the probe 11 is installed at the lower end of the connecting block 8. A traction rope 15 connected to the pay-off wheel group 3 is provided on the outer wall of the end of the connecting block 8. By providing a connecting device with the traction rope 15, the traction rope 15 can be adjusted by rotating the pay-off wheel group 3, so that the free end of the extension rod 6 moves upward under the action of the traction force, balancing the falling gravity of the end of the extension rod 6, so that the extension rod 6 maintains a horizontal parallel extension, thereby ensuring the stability of the detection.

[0040] Embodiment 1:

[0041] By utilizing the cooperation between the slide groove 24 and the sliding arc plate 23 , the clamping assembly 2 is adapted to the clamping and fastening installation of underground pipes 1 of different thicknesses. By utilizing the extrusion of the fastening screw 21 , the clamping assembly 2 is fixedly installed at the port position of the underground pipe 1 .

[0042] The driving gear 5 is driven by a motor to rotate, and the engagement of the driving gear 5 with the rack 18 is utilized to realize the lateral drive of the extension rod 6, and the extension rod 6 is driven to extend lateraly by the driving assembly 4, so that the probe 11 can detect and inspect the cables in the underground pipeline 1.

[0043] As the extension rod 6 is extended in the underground pipe 1, the center of gravity gradually shifts toward the inside of the underground pipe 1, causing the end of the extension rod 6 to fall. By providing a connecting device with a traction rope 15, the traction rope 15 can be adjusted by rotating the pay-off wheel group 3, so that the free end of the extension rod 6 moves upward under the action of traction force, balancing the falling gravity of the end of the extension rod 6, so that the extension rod 6 maintains a horizontally parallel extension, thereby ensuring the stability of detection.

[0044] A detection method implemented according to the above-mentioned traction-type underground pipeline detector, the detection method comprises the following steps:

[0045] Position installation, the extension device is fixedly installed at the port of the underground pipeline 1 through the clamping assembly 2, and the extension rod 6 is fixedly connected to the detection device through the connecting block 8;

[0046] Drive extension, through the meshing of the driving gear 5 and the rack 18, drive the extension rod 6 to extend to the inside of the underground pipeline 1 for detection;

[0047] The line-releasing and traction are performed by controlling the rotation of the line-releasing wheel group 3 to adjust the traction rope 15, thereby providing an upward traction force to the detection device.

[0048] Embodiment 2:

[0049] On the basis of Example 1, the present application also has a probe 11 installed at the upper end of the lower end of the connecting block 8 through a telescopic rod 10, an upper end of the telescopic rod 10 is provided with an adjusting arc plate 20 with an inner gear ring, and an outer gear ring 28 is provided at the lower end of the connecting block 8. The adjusting arc plate 20 is meshingly sleeved on the outer gear ring 28, and a pair of elastic bands 9 symmetrically arranged front and back are arranged at the upper end of the adjusting arc plate 20. Guide wheels 14 are provided on the front and rear outer walls of the upper end of the connecting block 8, and a steering rope 16 is provided at the upper end of the pair of elastic bands 9 distributed front and back, and the steering rope 16 extends laterally along the guide wheel 14 to the pay-off wheel group 3.

[0050] For underground pipelines 1 with a larger inner diameter, the detection range of the probe 11 is limited, and the angle of the probe 11 needs to be adjusted to increase the detection range.

[0051] By setting the coordination of the adjusting arc plate 20 and the outer gear ring 28, the rotation installation of the upper end of the probe 11 is realized, and the position of the probe 11 is limited by the traction of the elastic band 9 to prevent it from falling off. By setting the guide wheel 14, the adjusting rope 16 can be smoothly extended, and then by adjusting the rotation of the pay-off wheel group 3, the adjusting rope 16 can be pulled unidirectionally. Under the action of the traction force, the adjusting arc plate 20 rotates in a circle on the outer gear ring 28, thereby achieving the purpose of adjusting the angle of the probe 11.

[0052] Embodiment 3:

[0053] On the basis of Example 2, the present application further has a square plug post 32 provided at one end of the extension rod 6, and a slot 29 which cooperates with the square plug post 32 is provided at the other end of the extension rod 6, and threaded holes 30 are penetrated through the upper inner wall of the slot 29 and the square plug post 32, and a pair of adjacent extension rods 6 distributed linearly are fixedly connected by limiting bolts 33 inserted in the threaded holes 30.

[0054] For a relatively long underground pipeline 1 , the length of the extension rod 6 cannot meet the requirement, and it is necessary to provide a plurality of groups of extension rods 6 to splice and adapt to the length of the underground pipeline 1 .

[0055] By setting the square plug 32 and the slot 29 together, the cable extension rod 6 is positioned and spliced, and the limit bolt 33 is used to achieve fixed connection, so that the length of the extension rod 6 can be spliced ​​to adapt to underground pipes 1 of different lengths.

[0056] Embodiment 4:

[0057] On the basis of Example 3, the present application also has a pair of hinge seats 31 symmetrically arranged at the upper end of the extension rod 6, a rotating frame 27 is rotatably mounted on the hinge seat 31, one end of the rotating frame 27 is provided with a sleeve 26 rotatably inserted on the hinge seat 31, a wire arrangement wheel group 7 is installed in the middle position of the rotating frame 27, and the rear side of the rotating frame 27 is fixed to the upper end outer wall of the extension rod 6 by fastening screws.

[0058] Three sets of rotating wheels are arranged in the pay-out wheel group 3 and the arranging wheel group 7. The rotating wheels on the pay-out wheel group 3 and the arranging wheel group 7 correspond to the traction rope 15 and a pair of steering ropes 16 which are symmetrical front and back respectively. The traction rope 15 and the steering rope 16 extend along the arranging wheel group 7 to the pay-out wheel group 3, and the ends of the traction rope 15 and the steering rope 16 are both wound around the pay-out wheel group 3. The three sets of rotating wheels in the pay-out wheel group 3 are individually rotatably mounted through bearings.

[0059] The long-distance extension of the adjustment rope 16 and the traction rope 15 may easily cause entanglement with each other, so a wire arrangement device is required to limit the extension direction.

[0060] By setting the rotating frame 27 to be rotatably installed, during the splicing process of the extension rod 6, the wire arrangement wheel group 7 is rotatably installed, so that the wire arrangement wheel group extending into the underground pipeline 1 is rotatably installed on the upper ends of the adjusting rope 16 and the traction rope 15, avoiding affecting the splicing of the extension rod 6.

[0061] At the same time, the position of the adjusting rope 16 and the pulling rope 15 is limited by the wire arrangement wheel group 7 to ensure their lateral parallel extension. By independently installing the terminal rotating wheel of the wire release wheel group 3, the adjusting rope 16 and the pulling rope 15 can be adjusted separately to adapt to different detection needs.

[0062] Embodiment 5:

[0063] On the basis of Example 1, the present application further has a pair of front-to-back symmetrical limiting grooves 22 provided on the clamping assembly 2 , and the front and rear outer walls of the extension rod 6 are provided with positioning side strips 17 slidably inserted in the limiting grooves 22 .

[0064] The limiting groove 22 and the positioning side strip 17 are provided to further limit the lateral extension position of the extension rod 6, thereby ensuring that the extension rod 6 maintains parallel extension.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction-type underground pipeline detector, comprising an extension device and a detection device, characterized in that: The extension device comprises a clamping assembly (2) clamped on the outer wall of the end of the underground pipeline (1) and a driving assembly (4) driving a plurality of linearly connected extension rods (6) to extend transversely, and the detection device comprises a connecting block (8) fixed on the extension rod (6) and a probe (11) for detection; The clamping assembly (2) comprises a fixed arc plate (25) which fits the inner wall of the underground pipeline (1) and a sliding arc plate (23) which can be raised and lowered and fits the outer wall of the upper end of the underground pipeline (1); the sliding arc plate (23) is fixedly clamped on the underground pipeline (1) by a fastening screw (21); The driving assembly (4) comprises an extension rod (6) with a rack (18) which is inserted and slidably connected transversely, and a driving gear (5) driven by a motor and meshing with the rack (18); a pay-off wheel assembly (3) located at the upper end of the extension rod (6) is provided between the driving assembly (4) and the clamping assembly (2); The probe (11) is mounted on the lower end of the connection block (8), and a traction rope (15) connected to the pay-off wheel assembly (3) is provided on the outer wall of the end of the connection block (8).

2. A traction-type underground pipeline detector according to claim 1, characterized in that: The upper end of the probe (11) is mounted on the lower end of the connecting block (8) via a telescopic rod (10); a mounting hole (19) is provided at the upper end of the connecting block (8); a traction wheel (13) is provided at the upper end of the connecting block (8); the traction rope (15) extends along the traction wheel (13) to the pay-off wheel assembly (3); and the end of the extension rod (6) is inserted into the mounting hole (19) and fixedly connected via a fastening nut (12).

3. A traction-type underground pipeline detector according to claim 2, characterized in that: The upper end of the telescopic rod (10) is provided with an adjusting arc plate (20) with an inner gear ring, the lower end of the connecting block (8) is provided with an outer gear ring (28), the adjusting arc plate (20) is meshingly sleeved on the outer gear ring (28), and the upper end of the adjusting arc plate (20) is provided with a pair of elastic bands (9) symmetrically arranged front and rear.

4. The traction-type underground pipeline detector according to claim 3 is characterized in that: The front and rear outer walls of the upper end of the connection block (8) are provided with guide wheels (14), and the upper ends of a pair of elastic bands (9) distributed front and rear are provided with steering ropes (16), and the steering ropes (16) extend transversely along the guide wheels (14) to the pay-off wheel group (3).

5. The traction-type underground pipeline detector according to claim 1, characterized in that: One end of the extension rod (6) is provided with a square plug post (32), and the other end of the extension rod (6) is provided with a slot (29) that cooperates with the square plug post (32). The upper inner wall of the slot (29) and the square plug post (32) are penetrated by threaded holes (30), and a pair of linearly distributed adjacent extension rods (6) are fixedly connected by limiting bolts (33) inserted in the threaded holes (30).

6. The traction-type underground pipeline detector according to claim 1, characterized in that: The fixed arc plate (25) is transversely fixed on the clamping assembly (2), and a slide groove (24) is vertically arranged on the upper end of the fixed arc plate (25) and is opened on the side wall of the clamping assembly (2). One end of the sliding arc plate (23) is slidably inserted in the slide groove (24), and a fastening screw (21) is vertically arranged on the upper end of the sliding arc plate (23) and is threadedly rotatably mounted on the clamping assembly (2). The lower end of the fastening screw (21) is pressed on the upper arc-shaped outer wall of the sliding arc plate (23).

7. The traction-type underground pipeline detector according to claim 4, characterized in that: A pair of hinge seats (31) are provided at the upper end of the extension rod (6) and are symmetrical with each other. A rotating frame (27) is rotatably mounted on the hinge seat (31). A sleeve (26) rotatably plugged into the hinge seat (31) is provided at one end of the rotating frame (27). A cable arrangement wheel assembly (7) is installed at the middle position of the rotating frame (27). The rear side of the rotating frame (27) is fixed to the outer wall of the upper end of the extension rod (6) by means of fastening screws.

8. The traction-type underground pipeline detector according to claim 7, characterized in that: The pay-off wheel group (3) and the line-traversing wheel group (7) are each provided with three sets of rotating wheels. The rotating wheels on the pay-off wheel group (3) and the line-traversing wheel group (7) correspond to the traction rope (15) and a pair of symmetrical steering ropes (16) in the front and rear, respectively. The traction rope (15) and the steering rope (16) extend along the line-traversing wheel group (7) to the pay-off wheel group (3), and the ends of the traction rope (15) and the steering rope (16) are both wound around the pay-off wheel group (3). The three sets of rotating wheels in the pay-off wheel group (3) are independently rotatably mounted via bearings.

9. The traction-type underground pipeline detector according to claim 1, characterized in that: A pair of front-to-back symmetrical limiting grooves (22) are provided on the clamping assembly (2), and the front and rear outer walls of the extension rod (6) are provided with positioning side strips (17) which are slidably inserted into the limiting grooves (22).

10. A detection method implemented by the traction-type underground pipeline detector according to any one of claims 1 to 9, characterized in that: The detection method includes the following steps: Position installation, the extension device is fixedly installed on the port of the underground pipeline (1) through the clamping assembly (2), and the extension rod (6) is fixedly connected to the detection device through the connecting block (8); Driving extension, through the meshing of the driving gear (5) and the rack (18), driving the extension rod (6) to extend toward the inside of the underground pipeline (1) for detection; The line-releasing traction is achieved by controlling the rotation of the line-releasing wheel group (3) to adjust the traction rope (15), thereby providing an upward traction force to the detection device.

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