CN213629464U - Pipeline inspection robot - Google Patents
Pipeline inspection robot Download PDFInfo
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- CN213629464U CN213629464U CN202022433902.8U CN202022433902U CN213629464U CN 213629464 U CN213629464 U CN 213629464U CN 202022433902 U CN202022433902 U CN 202022433902U CN 213629464 U CN213629464 U CN 213629464U
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- pipeline inspection
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Abstract
The utility model discloses a pipeline inspection robot, including pipeline inspection device and running gear, the pipeline inspection device level sets up, pipeline inspection device's lower extreme is equipped with at least one buoyancy cabin, running gear sets up buoyancy cabin lower extreme is used for driving the buoyancy cabin removes. The utility model provides a pipeline inspection robot that can adapt to the complicated environment beyond conventional land (dry and wet land) simultaneously.
Description
Technical Field
The utility model relates to a pipeline detection equipment field. More specifically, the utility model relates to a pipeline inspection robot.
Background
In the actual working process of the pipeline detection robot, when sludge exists in a pipeline, the crawling vehicle cannot normally pass through the sludge; when the pipeline has the retaining, the climbing vehicle does not possess the ability that detects on water. At present, driving devices for walking movement on land and in water are designed into different types according to different use environments, and the traditional driving devices are wheel type, crawler type and blade type (propellers and the like) according to different use environments. The method comprises the following specific steps: the land walking driving mode mainly depends on the form of driving wheels, the mud walking driving mode mainly depends on the form of driving tracks, and the underwater walking driving mode mainly depends on the form of driving blades. In addition, in the aspect of research on amphibious equipment, most of the adopted power driving forms are combinations of the driving forms.
The utility model discloses a propeller (201910351807.2) provides a propeller type driver who is fit for aircraft, boats and ships design, contains drive shaft, oar axle and oar stick, and its characteristics are autogiration when meeting the air current through the oar stick that adopts area spiral slot, spiral protruding characteristic to utilize magnus effect to produce thrust.
Utility model patent "an amphibious vehicle's automobile body" (201920424170.0), mainly provide buoyancy through the gasbag to drive blade device and rotate and provide the thrust that gos forward in aquatic, when walking on the land, adjust running gear and the land contact that has the wheel through hydraulic system, rethread drive wheel realizes the motion of machine on the land.
Utility model patent amphibious ship (201810748401.3) of a novel drive arrangement is through setting up the wheel on the hull, and the wheel hub of wheel is the structure of a propeller type blade characteristic, and is the same with conventional drive wheel walking form when walking on the land, and when moving in the aquatic, drives hydraulic pressure disk assembly and carries out relative rotation for the wheel twists reverse 90, with regard to the wheel hub of propeller type as the power of aquatic navigation.
Conventional designs of drive are currently centered around wheeled, tracked and vane configurations, and it is difficult to satisfy the use in a single drive for a variety of environments. In particular, the driving force which can adapt to dry land, wet land, sand, stone, mud and water environment simultaneously is a fresh research. The prior art has the following disadvantages: at present, the conventional driving device is single in environmental adaptability; the amphibious device is mostly combined with conventional design in the aspect of research, the structure is complex, and in the aspect of environmental adaptability, although the amphibious device can adapt to the land and water, the use condition in a specific complex land environment is not researched and discussed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can adapt to the pipeline inspection robot of the complicated environment beyond conventional land (dry and wet land) simultaneously
In order to realize the basis the utility model discloses a these purposes and other advantages provide a pipeline inspection robot, including pipeline inspection device and running gear, the pipeline inspection device level sets up, pipeline inspection device's lower extreme is equipped with at least one buoyancy cabin, running gear sets up buoyancy cabin lower extreme is used for driving the buoyancy cabin removes.
Preferably, in the pipeline inspection robot, the walking devices include a plurality of walking systems which are equal in number to the buoyancy chambers and correspond to the buoyancy chambers one to one, and the walking systems are arranged at the lower ends of the corresponding buoyancy chambers.
Preferably, a pipeline inspection robot in, pipeline inspection device lower extreme interval is equipped with two the buoyancy cabin, the buoyancy cabin includes casing, bottom plate and arc, the bottom plate level sets up, and its lower extreme is equipped with traveling system, the equal opening in both ends about the inside cavity of casing and is established to the cover bottom plate upper end, be equipped with the connection skeleton in the casing, the upper and lower both ends of connecting the skeleton respectively with pipeline inspection device's lower extreme with the upper end of bottom plate is connected, the casing intussuseption is filled with the buoyancy foam, the arc sets up the front end of bottom plate lower extreme.
Preferably, in the pipeline inspection robot, the traveling system comprises a traveling mechanism, a transmission mechanism and a driving mechanism, the traveling mechanism is arranged at the lower end of the corresponding bottom plate, and the driving mechanism is in transmission connection with the traveling mechanism through the transmission mechanism.
Preferably, in the pipeline inspection robot, the transmission mechanism is a gear box, the gear box is arranged at the rear end of the corresponding shell, an input shaft of the gear box is in transmission connection with an output end of the driving mechanism, and an output shaft of the gear box is in transmission connection with an input end of the corresponding walking mechanism.
Preferably, in the pipeline inspection robot, the traveling mechanism includes a screw shaft, a positioning member, a power input shaft, a front connecting member, a rear connecting member, two chains and a plurality of drums, the screw shaft is disposed under the bottom plate along the front-rear direction, a front horizontal segment and a rear horizontal segment are disposed at the front end and the rear end of the screw shaft respectively, the front horizontal segment and the screw shaft are coaxially disposed, the rear horizontal segment and the screw shaft are eccentrically disposed, the front connecting member and the rear connecting member are both horizontally disposed and disposed at the front side and the rear side of the screw shaft respectively, the front end of the front horizontal segment penetrates through the front connecting member and is rotatably connected with the positioning member disposed at the lower end of the bottom plate, the power input shaft and the rear horizontal segment are arranged in parallel, and the front end of the power input shaft penetrates through the rear connecting member and is then connected with the rear horizontal segment through a vertically disposed eccentric wheel, the two chains are arranged along the length direction of the spiral shaft, the front end and the rear end of the chains are respectively movably connected with the two ends of the front connecting piece and the two ends of the rear connecting piece, the multiple rotary drums are arranged along the left-right direction and are arranged between the two chains at intervals, the left end and the right end of each rotary drum are respectively rotatably connected with the two chains, a notch penetrating through the rotary drum is radially arranged on the rotary drum along the rotary drum, the spiral shaft sequentially penetrates through the notches of the multiple rotary drums, the lower end of each rotary drum is provided with a moving strip along the left-right direction, a soft board is arranged between any two adjacent rotary drums, and the front end and the rear end of each soft board are respectively connected with the lower ends of the corresponding two rotary drums.
Preferably, in the pipeline inspection robot, the rotary drum includes two end covers and two optical axes, the two end covers are arranged at intervals in the left-right direction, the two end covers are connected through two positioning plates arranged at intervals in the up-down direction, the lower end of the positioning plate located below is provided with the moving strip, the front end and the rear end of the lower end of the positioning plate located below are respectively connected with two soft plates adjacent to the positioning plate, the two end covers are respectively connected with the two chains in a rotating manner, the two optical axes are arranged between the two end covers in the front-back direction, the left end and the right end of the optical axes are respectively connected with the end covers, and the gap is formed between the two optical axes.
Preferably, in the pipeline inspection robot, two ends of the end covers, which are far away from each other, are respectively provided with a pin shaft along the left and right directions, and the pin shafts penetrate through the corresponding chains and are in transmission connection with the chains.
Preferably, the pipeline inspection robot, the chain includes a plurality of vertically arranged connecting plates, a waist round hole is respectively arranged at the left end and the right end of the connecting plate, and the pin shaft sequentially penetrates through two corresponding connecting plates, two adjacent waist round holes are arranged in the waist round holes and can slide.
Preferably, in the pipeline inspection robot, a plurality of anti-slip strips are arranged at intervals at the lower end of the moving strip.
The utility model has the advantages that:
1. the utility model discloses a pipeline inspection robot sets up two buoyancy cabins at pipeline inspection device's lower extreme to set up running gear in every buoyancy cabin below, provide power for pipeline inspection robot's removal through two running gear, the buoyancy cabin that is filled with the foam provides buoyancy for pipeline inspection robot.
2. The utility model discloses a running gear is connected the back through power input shaft and external power supply transmission, and external power supply drives power input shaft and screw axis rotation to drive a plurality of rotary drums and a plurality of soft board motion, when working on the land (wet land, stone futilely), the rotary drum moves behind the minimum, and the removal strip on it contacts with the land, produces frictional force because of the relation of relative motion, makes the drive obtain the driving force of advancing or moving back; when the movable strip works on the ground of sand or mud, the movable strip on the rotary drum is not completely pressed into the sand or mud, the pushing force is obtained by the friction force between the movable strip and the ground, and after the movable strip is pressed into the sand or mud, the soft plate positioned between the rotary drum and the movable strip can be contacted with the sand or mud to generate the friction force to obtain the pushing force for advancing or retreating; when the water-saving device works in water, the rotation of the spiral shaft drives the wave motion of the soft plate to generate driving force in the water.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a pipeline inspection robot according to the present invention;
fig. 2 is a top view of the pipeline inspection robot according to the present invention;
fig. 3 is a bottom view of the pipeline inspection robot according to the present invention;
fig. 4 is a front view of the pipeline inspection robot according to the present invention;
fig. 5 is a schematic structural view of the traveling mechanism of the present invention;
fig. 6 is a schematic structural view of the threaded rod of the present invention;
fig. 7 is a schematic structural view of the chain according to the present invention;
FIG. 8 is a schematic structural view of a drum according to the present invention;
fig. 9 is a schematic view illustrating the connection between the connection plate and the shaft pin according to the present invention;
fig. 10 is a schematic structural diagram of the movable strip according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-4, an embodiment of the utility model provides a pipeline inspection robot, including pipeline inspection device 1 and running gear, the level of pipeline inspection device 1 sets up, and the lower extreme of pipeline inspection device 1 is equipped with at least one buoyancy cabin, and running gear sets up at buoyancy cabin lower extreme for it removes to drive the buoyancy cabin.
In this embodiment, the pipeline detection device 1 adopts the prior art, and the description is not repeated here. In this embodiment, at least one buoyancy chamber is arranged at the lower end of the pipeline detection device 1, and the buoyancy chamber filled with foam provides buoyancy for the pipeline detection robot, so that when accumulated water exists in the pipeline, the pipeline detection device 1 can float on the water surface. Meanwhile, a walking device is arranged below the buoyancy cabin, and walking power is provided for the pipeline detection device 1 and the buoyancy cabin on the ground or in water through the walking device.
Preferably, in the pipeline inspection robot, the walking devices include a plurality of walking systems which are equal in number to the buoyancy chambers and correspond to the buoyancy chambers one by one, and the walking systems are arranged at the lower ends of the corresponding buoyancy chambers.
In the embodiment, the lower end of each buoyancy cabin is provided with the walking device, so that the power distribution of the pipeline detection robot is more uniform when the pipeline detection robot walks.
Preferably, a pipeline inspection robot in, 1 lower extreme interval of pipeline inspection device is equipped with two buoyancy cabins, the buoyancy cabin includes casing 2, bottom plate 3 and arc 4, 3 levels of bottom plate set up, its lower extreme is equipped with traveling system, 2 inside cavities of casing and the equal openings in both ends from top to bottom, and the cover is established in 3 upper ends of bottom plate, be equipped with in the casing 2 and connect skeleton 5, the upper and lower both ends of connecting skeleton 5 are connected with pipeline inspection device 1's lower extreme and bottom plate 3's upper end respectively, 2 intussuseptions of casing are filled with the buoyancy foam, arc 4 sets up the front end at 3 lower extremes of bottom plate.
In this embodiment, as shown in fig. 1, 3 and 4, the casing 2 of the buoyancy compartment is connected with the lower end of the pipeline detection device 1 through the connection framework 5, and the buoyancy compartment is filled with foam, so that the buoyancy compartment can float on the water surface, and meanwhile, as shown in fig. 3, the arc-shaped plate 4 is arranged on the front side of the lower end of the casing 2, so that the obstacle crossing capability of the buoyancy compartment is enhanced, and the buoyancy compartment can be conveniently moved.
Preferably, in the pipeline inspection robot, the walking system comprises a walking mechanism, a transmission mechanism 6 and a driving mechanism 7, wherein the walking mechanism is arranged at the lower end of the corresponding bottom plate 3, and the driving mechanism 7 is in transmission connection with the walking mechanism through the transmission mechanism 6. The transmission mechanism 6 is a gear box, which is arranged at the rear end of the corresponding shell 2, the input shaft of the transmission mechanism is in transmission connection with the output end of the driving mechanism 7, and the output shaft of the transmission mechanism is in transmission connection with the input end of the corresponding walking mechanism. In addition, as shown in fig. 1, a wheel serving as an auxiliary support may be disposed at a lower end of the gear box, and the wheel serves to provide an additional support for the pipeline inspection robot, so that the pipeline inspection robot is more stable in the process of traveling, and in addition, provides a certain obstacle crossing capability when the pipeline inspection robot moves backward.
In this embodiment, the driving mechanism 7 may adopt a motor, a box body for placing the motor is arranged in the shell body 2 of the corresponding buoyancy chamber, an output shaft of the motor sequentially penetrates through the box body and the corresponding shell body 2 and is coaxially connected with an input shaft of the gear box, as shown in fig. 1, the output shaft of the gear box is positioned below the output shaft and is in transmission connection with an input end of the traveling mechanism, so that the traveling mechanism can be driven to work by the motor; in this embodiment, the motor and the gear box both adopt the prior art, and the description is not repeated here.
Preferably, as another embodiment of the present invention, as shown in fig. 1 to 10, the traveling mechanism includes a screw shaft 8, a positioning member 9, a power input shaft 10, a front connecting member 11, a rear connecting member 12, two chains and a plurality of drums, the screw shaft 8 is disposed under the bottom plate 3 along a front-rear direction, a front horizontal section 13 and a rear horizontal section 14 disposed along the front-rear direction are respectively disposed at front and rear ends of the screw shaft 8, the front horizontal section 13 and the screw shaft 8 are coaxially disposed, the rear horizontal section 14 is eccentrically disposed with respect to the screw shaft 8, the front connecting member 11 and the rear connecting member 12 are both horizontally disposed and are respectively disposed at front and rear sides of the screw shaft 8, a front end of the front horizontal section 13 passes through the front connecting member 11 and is rotatably connected to the positioning member 9 disposed at a lower end of the bottom plate 3, the power input shaft 10 is disposed in parallel to the rear horizontal section 14, the front end of the rotary drum penetrates through the rear connecting piece 12 and then is in transmission connection with the rear horizontal section 14 through an eccentric wheel which is vertically arranged, the two chains are arranged along the length direction of the spiral shaft 8, the front end and the rear end of the rotary drum are respectively in movable connection with the two ends of the front connecting piece 11 and the two ends of the rear connecting piece 12, the rotary drums are arranged along the left and right direction and are arranged between the two chains at intervals, the left end and the right end of the rotary drum are respectively in rotary connection with the two chains, a notch 15 penetrating through the rotary drum is arranged on the rotary drum along the radial direction of the rotary drum, the spiral shaft 8 sequentially penetrates through the notches 15 of the rotary drums, the lower end of the rotary drum is provided with a moving strip 16 along the left and right direction, a soft plate 17 is arranged between any two adjacent rotary drums, and the front end and the rear end of the soft.
In this embodiment, the power input shaft 10 is coaxially connected with the output shaft of the gear box, so that the driving mechanism 7 is in transmission connection with the power output shaft, the driving mechanism 7 drives the power output shaft to rotate through the transmission mechanism 6, the power output shaft drives the screw shaft 8 to synchronously rotate through the eccentric wheel, when the screw shaft rotates, the side wall of the gap 15 of each rotary drum is in contact with the screw shaft, so that the rotation is driven to move along with the screw shaft, as the left end and the right end of the rotary drum are coaxially connected with two chains, and the two ends of the two chains are respectively in rotational connection with the fixedly arranged front connecting piece 11 and the rear connecting piece 12, so that the positions of the front end and the rear end of the chains are unchanged, as shown in fig. 1-2, when the screw shaft rotates, a plurality of rotations are driven by the screw shaft to form a simple harmonic wave, and can be in contact, driving the pipeline detecting device 1 to move.
Preferably, as another embodiment of the utility model, as shown in fig. 4, the rotary drum includes two end covers 18 and two optical axes 19, two the interval sets up about end cover 18, connects through two locating plates 20 that the interval set up from top to bottom between the two, is located the below locating plate 20's lower extreme is equipped with remove strip 16, and is located the below locating plate 20 lower extreme around both ends respectively with two rather than adjacent soft board 17 connect, two end cover 18 respectively with two the chain rotates to be connected, two optical axes 19 all sets up two along the fore-and-aft direction between the end cover 18, its about both ends respectively with end cover 18 connects, two form between the optical axis 19 breach 15.
In this embodiment, a soft plate 17 is disposed between two adjacent drums, and the soft plate 17 can be made of a rubber pad.
Preferably, as another embodiment of the present invention, a pin 21 is disposed at each end of the two end covers 18 away from each other along the left-right direction, and the pin 21 passes through the corresponding chain and is in transmission connection with the chain; the chain includes a plurality of vertical connecting plates 22 that set up, both ends are equipped with a waist round hole 23 respectively about connecting plate 22, round pin axle 21 passes two that correspond in proper order the adjacent two of connecting plate 22 waist round hole 23 and slidable set up in the two.
In the embodiment, the chains are spliced by the connecting pieces, and the adjacent two connecting pieces are movably connected through the corresponding shaft pins, so that the connecting pieces can move along with the corresponding rotary drums; as an extension, as shown in fig. 8, two lightening holes may be formed on the connecting plate 22 to reduce the weight of the connecting plate 22 and the chain.
Preferably, as another embodiment of the present invention, a plurality of anti-slip strips 24 are provided at intervals at the lower end of the moving strip 16.
In this embodiment, the lower end of the moving strip 16 is spaced apart by a plurality of cleats 24 to increase the friction between the moving strip 16 and the contact surface.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields suitable for the invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details and embodiments shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a pipeline inspection robot, its characterized in that, includes pipeline inspection device (1) and running gear, pipeline inspection device (1) level sets up, the lower extreme of pipeline inspection device (1) is equipped with at least one buoyancy cabin, running gear sets up buoyancy cabin lower extreme is used for driving the buoyancy cabin removes.
2. The pipeline inspection robot as claimed in claim 1, wherein the walking means comprises a plurality of walking systems corresponding to the buoyancy chambers in number and one to one, and the walking systems are disposed at the lower ends of the corresponding buoyancy chambers.
3. The pipeline inspection robot according to claim 2, wherein two buoyancy chambers are arranged at the lower end of the pipeline inspection device (1) at intervals, each buoyancy chamber comprises a shell (2), a bottom plate (3) and an arc-shaped plate (4), the bottom plate (3) is horizontally arranged, the traveling system is arranged at the lower end of the bottom plate, the shell (2) is hollow, the upper end and the lower end of the shell are both open, the shell is covered at the upper end of the bottom plate (3), a connecting framework (5) is arranged in the shell (2), the upper end and the lower end of the connecting framework (5) are respectively connected with the lower end of the pipeline inspection device (1) and the upper end of the bottom plate (3), a buoyancy foam body is filled in the shell (2), and the arc-shaped plate (4) is arranged at the front end of the lower end of the bottom plate (3).
4. The pipeline inspection robot according to claim 3, wherein the walking system comprises a walking mechanism, a transmission mechanism (6) and a driving mechanism (7), the walking mechanism is disposed at the lower end of the corresponding bottom plate (3), and the driving mechanism (7) is in transmission connection with the walking mechanism through the transmission mechanism (6).
5. The pipeline inspection robot as claimed in claim 4, wherein said transmission mechanism (6) is a gear box, which is disposed at the rear end of the corresponding housing (2), and the input shaft thereof is in transmission connection with the output end of said driving mechanism (7), and the output shaft thereof is in transmission connection with the input end of the corresponding walking mechanism.
6. The pipeline inspection robot as claimed in claim 5, wherein the traveling mechanism comprises a screw shaft (8), a positioning member (9), a power input shaft (10), a front connecting member (11), a rear connecting member (12), two chains and a plurality of drums, the screw shaft (8) is disposed under the bottom plate (3) along a front-rear direction, a front horizontal section (13) and a rear horizontal section (14) are disposed at front and rear ends of the screw shaft (8), the front horizontal section (13) and the screw shaft (8) are coaxially disposed, the rear horizontal section (14) is eccentrically disposed with the screw shaft (8), the front connecting member (11) and the rear connecting member (12) are both horizontally disposed and disposed at front and rear sides of the screw shaft (8), a front end of the front horizontal section (13) penetrates through the front connecting member (11) and is rotatably connected with the positioning member (9) disposed at a lower end of the bottom plate (3), the power input shaft (10) and the rear horizontal section (14) are arranged in parallel, the front end of the power input shaft penetrates through the rear connecting piece (12) and then is in transmission connection with the rear horizontal section (14) through a vertically arranged eccentric wheel, the two chains are arranged along the length direction of the screw shaft (8), the front end and the rear end of the screw shaft are respectively movably connected with the two ends of the front connecting piece (11) and the two ends of the rear connecting piece (12), the multiple rotary drums are arranged along the left and right direction and are arranged between the two chains at intervals in the front and back direction, the left end and the right end of each rotary drum are respectively in rotary connection with the two chains, a notch (15) penetrating through each rotary drum is arranged on each rotary drum along the radial direction of the rotary drum, the screw shaft (8) sequentially penetrates through the notches (15) of the multiple rotary drums, the lower ends of the rotary drums are respectively provided with a moving strip (16) along the left and right, the front end and the rear end of the soft board (17) are respectively connected with the lower ends of the two corresponding rotary drums.
7. The pipeline inspection robot according to claim 6, wherein the drum comprises two end caps (18) and two optical shafts (19), the two end caps (18) are spaced left and right and connected by two positioning plates (20) spaced up and down, the lower end of the positioning plate (20) located below is provided with the moving strip (16), the front and rear ends of the lower end of the positioning plate (20) located below are respectively connected with the two soft plates (17) adjacent thereto, the two end caps (18) are respectively connected with the two chains in a rotating manner, the two optical shafts (19) are both arranged between the two end caps (18) in the front and rear direction, the left and right ends of the optical shafts are respectively connected with the end caps (18), and the gap (15) is formed between the two optical shafts (19).
8. The pipeline inspection robot as claimed in claim 7, wherein a pin (21) is disposed at each end of the two end caps (18) away from each other along the left-right direction, and the pin (21) passes through the corresponding chain and is in transmission connection therewith.
9. The pipeline inspection robot as claimed in claim 8, wherein the chain comprises a plurality of vertically arranged connecting plates (22), a waist circular hole (23) is respectively formed at each of the left and right ends of each connecting plate (22), and the pin shaft (21) sequentially passes through and is slidably disposed in two adjacent waist circular holes (23) of two corresponding connecting plates (22).
10. A pipeline inspection robot as claimed in any one of claims 6 to 9, wherein the lower end of the moving bar (16) is provided with a plurality of anti-slip bars (24) at intervals.
Priority Applications (1)
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CN202022433902.8U CN213629464U (en) | 2020-10-28 | 2020-10-28 | Pipeline inspection robot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202022433902.8U CN213629464U (en) | 2020-10-28 | 2020-10-28 | Pipeline inspection robot |
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CN213629464U true CN213629464U (en) | 2021-07-06 |
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CN202022433902.8U Active CN213629464U (en) | 2020-10-28 | 2020-10-28 | Pipeline inspection robot |
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