CN211857284U - Underground pipe gallery inspection robot - Google Patents
Underground pipe gallery inspection robot Download PDFInfo
- Publication number
- CN211857284U CN211857284U CN202020142948.1U CN202020142948U CN211857284U CN 211857284 U CN211857284 U CN 211857284U CN 202020142948 U CN202020142948 U CN 202020142948U CN 211857284 U CN211857284 U CN 211857284U
- Authority
- CN
- China
- Prior art keywords
- chassis
- inspection robot
- sleeve
- driven wheel
- pipe gallery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000000007 visual effect Effects 0.000 claims abstract description 11
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Landscapes
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Manipulator (AREA)
Abstract
The invention relates to an underground pipe gallery inspection robot which comprises a chassis, a differential motor, a driving wheel, a storage battery, a driven wheel, a steering mechanism and a visual navigation system, wherein the chassis is provided with a driving wheel and a driving wheel; the rear part of the chassis is provided with two driving wheels, the front part of the chassis is provided with two driven wheels, the differential motor is fixedly connected on the chassis through threads, output shafts at two ends of the differential motor are respectively connected with the left driving wheel and the right driving wheel through flat keys, the steering mechanism is arranged between the two driven wheels at the front part of the chassis, and the two driven wheels realize synchronous steering through the steering mechanism between the two driven wheels. The underground pipe gallery inspection robot has the advantages of high running speed and flexible steering, and meanwhile, the robot adopts a visual navigation system based on a linear array CCD camera, has reliable performance, reduces the cost compared with a fixed guide rail type inspection robot, and can realize autonomous inspection operation.
Description
Technical Field
The invention relates to the technical field of robot design, in particular to an underground pipe gallery inspection robot.
Background
The process of urbanization has promoted the development of underground pipe gallery, and a large amount of lines and supporting facilities thereof are placed underground. Daily work of patrolling and examining is the important measure of the normal work of guarantee electric power system, nevertheless because underground pipe gallery has characteristics such as distance is long, the topography is complicated and the cable is of a great variety, and traditional manual work patrols and examines inefficiency, maneuverability is poor, consequently utilizes to patrol and examine the robot and replace the manual work and patrol and examine its inevitable trend.
Utilize the robot to carry out the underground pipe gallery and patrol and examine the operation, reducible potential safety hazard not only ensures the reliable output of electric energy, and is favorable to improving the degree of automation of transmission network monitoring to promote smart power grids's construction. Therefore, the flexible and reliable inspection robot has important significance for guaranteeing the transmission of electric energy. Several underground pipe gallery inspection robot navigation modes that have been put into use at present adopt fixed guide rail type more, though this kind of navigation mode reliability is high but the cost is higher, inconvenient quick arrangement.
Disclosure of Invention
The invention aims to provide an underground pipe gallery inspection robot which is high in running speed and flexible in steering aiming at the problems of low manual inspection efficiency, high cost of a fixed guide rail type inspection robot and the like.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
an underground pipe gallery inspection robot comprises a chassis, a differential motor, a driving wheel, a storage battery, a driven wheel, a steering mechanism and a visual navigation system; the rear part of the chassis is provided with two driving wheels, the front part of the chassis is provided with two driven wheels, the differential motor is fixedly connected on the chassis through threads, output shafts at two ends of the differential motor are respectively connected with the left driving wheel and the right driving wheel through flat keys, the steering mechanism is arranged between the two driven wheels at the front part of the chassis, the two driven wheels realize synchronous steering through the steering mechanism between the two driven wheels, and the steering mechanism comprises a steering stepping motor, a bracket, a first sleeve, a second sleeve, a first connecting rod, a second connecting rod, a crank and a V-shaped frame;
a wheel shaft is arranged in each driven wheel, a bracket is arranged between the left driven wheel and the right driven wheel, two ends of each bracket are provided with a hinged hole bolt, and the hinged hole bolts are respectively provided with a first sleeve capable of rotating around the vertical axis of the hinged hole bolts; an inner hole is formed in the circumference of the first sleeve, and a wheel shaft of the driven wheel is in interference fit with the inner hole of the first sleeve; a boss with an opening is welded on the circumference of the first sleeve, and a fisheye rod end knuckle bearing is arranged on the unthreaded hole and used for mounting a first connecting rod and a second connecting rod;
the steering stepping motor is arranged on the n-shaped frame, an output shaft of the steering stepping motor is connected with one end of a crank through a flat key, so that the crank can rotate around the axis of the output shaft of the steering stepping motor; the other end of the crank is provided with a hole and is arranged together with the fisheye rod end joint bearing through a screw; one end of the second connecting rod is arranged on a fisheye rod end joint bearing at one end of the crank, and the other end of the second connecting rod is arranged together with a fisheye rod end joint bearing on the first sleeve connected with a driven wheel; a first connecting rod is arranged between fisheye rod end joint bearings on first sleeves of the left driven wheel and the right driven wheel.
The left side and the right side of an inner hole of the driven wheel are respectively provided with a first bearing, and the inner diameter of each first bearing is matched with the wheel shaft, so that the driven wheel is arranged on the wheel shaft.
The end face of the driving wheel is fixedly provided with a shaft end retainer ring through a screw, and the shaft end retainer ring is used for preventing the driving wheel from shifting left and right.
And the end surface of the driven wheel is fixedly provided with a shaft end check ring through a screw, and the shaft end check ring is used for preventing the driven wheel from shifting left and right.
A storage battery and a control box are arranged on the chassis, the storage battery supplies power for the inspection robot, and a temperature and humidity sensor, a gas concentration sensor, a camera and an illuminating lamp are arranged on the control box;
the second bearings are installed on the upper side and the lower side of the inner hole of the first sleeve respectively, the inner hole of each second bearing is matched with the corresponding hinged hole bolt, and the hinged hole bolts are fixed on the support through threaded connection, so that the first sleeve can rotate around the vertical axis of the hinged hole bolts.
The second sleeve is sleeved on the reamed hole bolt and used for preventing the second bearing from axially moving, and the position of the first sleeve is limited.
The visual navigation system comprises a linear array CCD camera, an L-shaped support, a camera fixing platform, a control box and a navigation line, wherein the linear array CCD camera is fixed on the L-shaped support through threaded connection, the L-shaped support is fixed on the camera fixing platform, the camera fixing platform is fixed on the support, the control box is installed on a chassis, and the control box is internally provided with the control system.
Install temperature and humidity sensor and gas concentration sensor on the control box, temperature and humidity sensor is used for monitoring the temperature and the humidity in the piping lane, and gas concentration sensor is used for monitoring the gaseous concentration in the piping lane.
Has the advantages that:
1. the underground pipe gallery inspection robot adopts a four-wheel type travelling mechanism, and is flexible in steering and strong in power.
2. The underground pipe gallery inspection robot adopts a visual navigation system based on a linear array CCD camera, and has reliable performance; compared with a fixed guide rail type inspection robot, the underground pipe gallery inspection robot is lower in cost.
3. By carrying the camera and various sensors, the underground pipe gallery inspection robot can realize autonomous inspection operation.
Drawings
Fig. 1 is a schematic structural view of an underground pipe gallery inspection robot.
Fig. 2 is a schematic structural view of the driving mechanism.
Fig. 3 is a schematic structural view of the steering mechanism.
Fig. 4 is a schematic view of the driven wheel securing device.
Fig. 5 shows the driven wheel turning to the schematic (right turn).
Fig. 6 shows the driven wheel turning to the schematic (left turn).
FIG. 7 is a schematic diagram of a visual navigation system.
In the figure: 1-differential motor, 2-driving wheel, 3-storage battery, 4-chassis, 5-control box, 6-driven wheel, 7-steering mechanism, 7-1-reamed hole bolt, 7-2-first sleeve, 7-4-fisheye rod end joint bearing, 7-5-bracket, 7-6-first connecting rod, 7-7-second connecting rod, 7-8-bolt, 7-9-crank, 7-10-bracket, 8-linear array CCD camera, 9-steering stepping motor, 10-camera, 11-illuminating lamp, 12-temperature and humidity sensor, 13-gas concentration sensor, 14-leading line, 15-shaft end retainer ring, 16-first screw, 17-second screw, 18-first bearing, 19-wheel shaft, 20-nut, 21-second sleeve, 22-L-shaped bracket, 23-camera fixing platform.
Detailed Description
The present invention will be further described with reference to the following specific examples.
An underground pipe gallery inspection robot comprises a chassis 4, a differential motor 1, a driving wheel 2, a storage battery 3, a driven wheel 6, a steering mechanism 7 and a visual navigation system; two driving wheels 2 are arranged at the rear part of a chassis 4, two driven wheels 6 are arranged at the front part of the chassis 4, a differential motor 1 is fixedly connected on the chassis 4 through threads, output shafts at two ends of the differential motor 1 are respectively connected with the left and right driving wheels 2 through flat keys, a steering mechanism 7 is arranged between the two driven wheels 6 at the front part of the chassis 4, the two driven wheels 6 realize synchronous steering through the steering mechanism 7 between the two driven wheels, and the steering mechanism 7 comprises a steering stepping motor 9, a bracket 7-5, a first sleeve 7-2, a second sleeve 21, a first connecting rod 7-6, a second connecting rod 7-7, a crank 7-9 and a bracket 7-10;
a wheel shaft 19 is arranged in the driven wheel 6, a bracket 7-5 is arranged between the left driven wheel 6 and the right driven wheel 6, two ends of the bracket 7-5 are provided with hinged hole bolts 7-1, and the hinged hole bolts 7-1 are respectively provided with a first sleeve 7-2 capable of rotating around the vertical axis of the hinged hole bolts 7-1; an inner hole is formed in the circumference of the first sleeve 7-2, and a wheel shaft 19 of the driven wheel 6 is in interference fit with the inner hole of the first sleeve 7-2; a boss with an opening is welded on the circumference of the first sleeve 7-2, and a fisheye rod end joint bearing is arranged on the unthreaded hole and used for mounting a first connecting rod 7-6 and a second connecting rod 7-7;
the n-shaped frame 7-10 is fixedly arranged on the chassis 4, the steering stepping motor 9 is arranged on the n-shaped frame 7-10, and an output shaft of the steering stepping motor 9 is connected with one end of a crank 7-9 through a flat key, so that the crank 7-9 can rotate around the axis of the output shaft of the steering stepping motor 9; the other end of the crank 7-9 is provided with a hole and is arranged together with the fisheye rod end joint bearing through a screw; one end of the second connecting rod 7-7 is mounted on a fisheye rod end joint bearing at one end of the crank 7-9, and the other end of the second connecting rod 7-7 is mounted together with a fisheye rod end joint bearing on the first sleeve 7-2 connected with the driven wheel 6; a first connecting rod 7-6 is arranged between fisheye rod end joint bearings on first sleeves 7-2 of the left driven wheel 6 and the right driven wheel 6.
The left side and the right side of the inner hole of the driven wheel 6 are respectively provided with a first bearing 18, the inner diameter of the first bearing 18 is matched with the wheel shaft 19, and the driven wheel 6 is arranged on the wheel shaft 19.
The end face of the driving wheel 2 is fixedly provided with a shaft end retainer ring 15 through screws, and the shaft end retainer ring is used for preventing the driving wheel 2 from shifting left and right.
And a shaft end retainer ring 15 is fixedly arranged on the end surface of the driven wheel 6 through a screw and is used for preventing the driven wheel 6 from shifting left and right.
A storage battery 3 and a control box 5 are arranged on the chassis 4, the storage battery 3 supplies power for the inspection robot, and a temperature and humidity sensor 12, a gas concentration sensor 13, a camera 10 and an illuminating lamp 11 are arranged on the control box 5;
the upper side and the lower side of an inner hole of the first sleeve 7-2 are respectively provided with a second bearing, the inner hole of the second bearing is matched with the reamed hole bolt 7-1, and the reamed hole bolt 7-1 is fixed on the bracket 7-5 through threaded connection, so that the first sleeve 7-2 can rotate around the vertical axis of the reamed hole bolt 7-1.
The second sleeve 21 is sleeved on the reamed hole bolt 7-1 and used for preventing the second bearing from axially moving, and further limiting the position of the first sleeve 7-2.
The visual navigation system comprises a linear array CCD camera 8, an L-shaped support 22, a camera fixing platform 23, a control box 5 and a navigation line 14, wherein the linear array CCD camera 8 is fixed on the L-shaped support 22 through threaded connection, the L-shaped support 22 is fixed on the camera fixing platform 23, the camera fixing platform 23 is fixed on supports 7-5, the control box 5 is installed on a chassis 4, and the control system is installed in the control box 5.
Install temperature and humidity sensor 12 and gas concentration sensor 13 on the control box 5, temperature and humidity sensor 12 is used for monitoring the temperature and the humidity in the piping lane, and gas concentration sensor 13 is used for monitoring the gaseous concentration in the piping lane.
As shown in fig. 1. The differential motor 1 is arranged on the chassis 4 and is used for driving the two driving wheels 2 to rotate. The storage battery 3 and the control box 5 are fixed on the chassis 4, and the storage battery 3 supplies power for the robot. The steering mechanism 7 is used for controlling steering of the driven wheel, and the linear array CCD camera 8 is fixed on the support and used for controlling the robot to run along a preset path. Temperature and humidity sensor 12 and gas concentration sensor 13 install on control box 5, and temperature and humidity sensor 12 is used for monitoring the temperature and the humidity in the piping lane, and gas concentration sensor 13 is used for monitoring the gaseous concentration in the piping lane. Camera 10 and light 11 are installed in the top of control box 5, and camera 10 shoots the inside condition of piping lane in real time and transmits the image for the control room to in the staff grasps the inside condition of piping lane, light 11 provides the light source for camera 10. And a control system is arranged in the control box 5 and used for controlling the robot to carry out autonomous inspection operation.
The working principle of the driving mechanism is as follows: the differential motor 1 works to drive the left driving wheel and the right driving wheel 2 to rotate, so that the robot is driven to run.
The operating principle of the rotating mechanism is as follows: an output shaft of the steering stepping motor 9 drives the crank 7-9 to rotate, the crank 7-9 drives the second connecting rod 7-7 to do plane motion, and the second connecting rod 7-7 further drives the first connecting rod 7-6 to do translation motion. As the two sides of the first connecting rod 7-6 are respectively connected with the lug bosses of the sleeve 7-2 in a rotating way, the sleeve 7-2 can rotate around the axis of the bolt 7-1 for reaming, and the synchronous steering of the left driven wheel 6 and the right driven wheel 6 is realized. Fig. 5 is a schematic view of the driven wheel turning left and right.
The working principle of the visual navigation system is as follows: a white line with a certain width is sprayed on the ground by paint or paint to be used as a leading line 14, and the lens of the linear array CCD camera 8 faces the leading line 14. When the robot deviates from the leading line in the running process, the linear array CCD camera 8 transmits images to the control system, the control system analyzes the images, then controls the steering stepping motor 9 to work, and drives the driven wheel 6 to steer, so that the robot can automatically run along the leading line.
The robot runs along the navigation line 14 under the driving of the differential motor 1, and the storage battery 3 supplies power for the robot. In the process of traveling, temperature and humidity in the temperature and humidity sensor 12 real-time supervision piping lane, the gaseous concentration of gas in the gas concentration sensor 13 real-time supervision piping lane. The camera 10 shoots the inside condition of pipe gallery in real time and transmits the image for the control room to the staff grasps the inside condition of pipe gallery. When the robot deviates from the navigation line, the linear array CCD camera 8 shoots images and sends the images to the control system, the control system analyzes the images and controls the steering stepping motor 9 to work, and the stepping motor 9 drives the driven wheel 6 to steer through the steering mechanism 7, so that the robot can autonomously run along the navigation line.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any person skilled in the art can make any simple modification, equivalent replacement, and improvement on the above embodiment without departing from the technical spirit of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides an underground pipe gallery inspection robot which characterized in that: the device comprises a chassis, a differential motor, a driving wheel, a storage battery, a driven wheel, a steering mechanism and a visual navigation system; the rear part of the chassis is provided with two driving wheels, the front part of the chassis is provided with two driven wheels, the differential motor is fixedly connected on the chassis through threads, output shafts at two ends of the differential motor are respectively connected with the left driving wheel and the right driving wheel through flat keys, the steering mechanism is arranged between the two driven wheels at the front part of the chassis, the two driven wheels realize synchronous steering through the steering mechanism between the two driven wheels, and the steering mechanism comprises a steering stepping motor, a bracket, a first sleeve, a second sleeve, a first connecting rod, a second connecting rod, a crank and a V-shaped frame;
a wheel shaft is arranged in each driven wheel, a bracket is arranged between the left driven wheel and the right driven wheel, two ends of each bracket are provided with a hinged hole bolt, and the hinged hole bolts are respectively provided with a first sleeve capable of rotating around the vertical axis of the hinged hole bolts; an inner hole is formed in the circumference of the first sleeve, and a wheel shaft of the driven wheel is in interference fit with the inner hole of the first sleeve; a boss with an opening is welded on the circumference of the first sleeve, and a fisheye rod end knuckle bearing is arranged on the unthreaded hole and used for mounting a first connecting rod and a second connecting rod;
the steering stepping motor is arranged on the n-shaped frame, an output shaft of the steering stepping motor is connected with one end of a crank through a flat key, so that the crank can rotate around the axis of the output shaft of the steering stepping motor; the other end of the crank is provided with a hole and is arranged together with the fisheye rod end joint bearing through a screw; one end of the second connecting rod is arranged on a fisheye rod end joint bearing at one end of the crank, and the other end of the second connecting rod is arranged together with a fisheye rod end joint bearing on the first sleeve connected with a driven wheel; a first connecting rod is arranged between fisheye rod end joint bearings on first sleeves of the left driven wheel and the right driven wheel.
2. The underground pipe gallery inspection robot according to claim 1, characterized in that: the left side and the right side of an inner hole of the driven wheel are respectively provided with a first bearing, and the inner diameter of each first bearing is matched with the wheel shaft, so that the driven wheel is arranged on the wheel shaft.
3. The underground pipe gallery inspection robot according to claim 1, characterized in that: the end face of the driving wheel is fixedly provided with a shaft end retainer ring through a screw, and the shaft end retainer ring is used for preventing the driving wheel from shifting left and right.
4. The underground pipe gallery inspection robot according to claim 1, characterized in that: and the end surface of the driven wheel is fixedly provided with a shaft end check ring through a screw, and the shaft end check ring is used for preventing the driven wheel from shifting left and right.
5. The underground pipe gallery inspection robot according to claim 1, characterized in that: the inspection robot is characterized in that a storage battery and a control box are installed on the chassis, the storage battery supplies power to the inspection robot, and a temperature and humidity sensor, a gas concentration sensor, a camera and a lighting lamp are installed on the control box.
6. The underground pipe gallery inspection robot according to claim 1, characterized in that: the second bearings are installed on the upper side and the lower side of the inner hole of the first sleeve respectively, the inner hole of each second bearing is matched with the corresponding hinged hole bolt, and the hinged hole bolts are fixed on the support through threaded connection, so that the first sleeve can rotate around the vertical axis of the hinged hole bolts.
7. The underground pipe gallery inspection robot according to claim 6, characterized in that: the second sleeve is sleeved on the reamed hole bolt and used for preventing the second bearing from axially moving, and the position of the first sleeve is limited.
8. The underground pipe gallery inspection robot according to claim 1, characterized in that: the visual navigation system comprises a linear array CCD camera, an L-shaped support, a camera fixing platform, a control box and a navigation line, wherein the linear array CCD camera is fixed on the L-shaped support through threaded connection, the L-shaped support is fixed on the camera fixing platform, the camera fixing platform is fixed on the support, the control box is installed on a chassis, and the control box is internally provided with the control system.
9. The underground pipe gallery inspection robot according to claim 8, wherein: install temperature and humidity sensor and gas concentration sensor on the control box, temperature and humidity sensor is used for monitoring the temperature and the humidity in the piping lane, and gas concentration sensor is used for monitoring the gaseous concentration in the piping lane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142948.1U CN211857284U (en) | 2020-01-22 | 2020-01-22 | Underground pipe gallery inspection robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020142948.1U CN211857284U (en) | 2020-01-22 | 2020-01-22 | Underground pipe gallery inspection robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211857284U true CN211857284U (en) | 2020-11-03 |
Family
ID=73232416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020142948.1U Expired - Fee Related CN211857284U (en) | 2020-01-22 | 2020-01-22 | Underground pipe gallery inspection robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211857284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221339A (en) * | 2020-01-22 | 2020-06-02 | 南京林业大学 | Underground pipe gallery inspection robot |
-
2020
- 2020-01-22 CN CN202020142948.1U patent/CN211857284U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111221339A (en) * | 2020-01-22 | 2020-06-02 | 南京林业大学 | Underground pipe gallery inspection robot |
| CN111221339B (en) * | 2020-01-22 | 2024-06-21 | 南京林业大学 | Underground pipe gallery inspection robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017004943A1 (en) | Smart mobile detection platform for greenhouse | |
| CN111221339A (en) | Underground pipe gallery inspection robot | |
| CN111457192A (en) | Wheeled pipeline inner wall cleans detection robot | |
| CN111217108A (en) | A single track robot system of patrolling and examining for extreme environment band conveyer | |
| CN211857284U (en) | Underground pipe gallery inspection robot | |
| CN209682199U (en) | A kind of mine monitoring rail polling robot | |
| CN210730437U (en) | Pipeline cleaning robot | |
| CN111776100B (en) | Outer pipeline crawling robot with six-link mechanism | |
| CN111216092A (en) | Composite wheel type hanging rail inspection robot | |
| CN111578151B (en) | Flange water leakage detection node capable of being installed on multi-pipe-diameter pipeline and intelligent liquid leakage monitoring system | |
| CN204383627U (en) | AGV intelligence charge car travel driving system | |
| CN112555571A (en) | Automatic control trolley for internal maintenance of pipeline | |
| CN211223653U (en) | Industrial inspection equipment | |
| CN110842900A (en) | Pipeline robot inspection system and method | |
| CN114184238A (en) | Old pipeline inspection robot based on telescopic wheel train | |
| CN113048326A (en) | Robot for detecting defects in pipeline based on machine vision | |
| CN111497970B (en) | Pipeline cruising system capable of passing through artificial intelligent bend and liquid leakage detection, positioning and monitoring system | |
| CN115436754A (en) | Intelligent inspection robot for underground power pipeline cable fault detection | |
| CN207945413U (en) | A kind of reducing circulating line crawl device | |
| CN218361136U (en) | Ash removal device for horizontal cylindrical dust removal pipeline | |
| CN108533886B (en) | Maintenance equipment for petroleum pipeline | |
| CN206208294U (en) | A kind of pipe detection device | |
| CN213840046U (en) | Automatic control trolley for internal maintenance of pipeline | |
| CN114310933A (en) | Suspension type inspection robot | |
| CN215908658U (en) | Three track pipeline inspection robot of self-adaptation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |