Unmanned detection vehicle for daily inspection and leakage detection of natural gas pipeline

Abstract

The unmanned detection vehicle comprises a bottom plate, a solar photovoltaic power generation set is arranged on one side of the top of the bottom plate, a storage battery is arranged on one side of the solar photovoltaic power generation set, and a crawler belt driving mechanism is arranged at the bottom of the interior of the bottom plate; through cooperation of the bottom plate, the crawler belt driving mechanism, the crawler belt, a camera group, a first gas concentration detection device, a GPS positioning device, a connecting vertical plate and a WiFi signal transmission mechanism, in the natural gas pipeline inspection process, the device can inspect along the route of a pipeline; when the natural gas concentration of a section of route changes, data can be detected in time, the situation that natural gas continuously leaks is avoided, the leakage position can be positioned, and the flatness image of the ground can be compared in the inspection process, so that the situation that the natural gas pipeline is excavated by other construction teams is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas leakage detection, and in particular to an unmanned detection vehicle used for daily inspection and leakage detection of natural gas pipelines. Background Art

[0002] A natural gas pipeline is a pipeline that transports natural gas from a mining site or processing plant to a city’s gas distribution center or an industrial enterprise user. If a natural gas leaks, it is prone to explosion. In order to reduce the impact of leaks and avoid leakage accidents caused by man-made damage or natural disasters, natural gas pipelines are buried underground. In order to detect leaks in a timely manner, the gas at the pipeline location needs to be tested during daily maintenance.

[0003] The existing authorized publication number is "CN108240558B", which is a natural gas leak detection device and detection method with a linkage alarm function, including a mounting through hole on the surface of the base, a sun gear and a planetary gear movably mounted on the surface of the bottom plate; a gear ring and a snail disk are respectively fixed on the two end surfaces of the outer shell; a circular groove is opened on the surface of the partition; the first bevel gear is connected to the planetary gear through a connecting shaft; a threaded shaft is movably mounted on the circumference of the inner shell, a slider is slidably mounted on the outer bottom surface, an arc ring is slidably mounted on the inner bottom surface, and an internal threaded hole is opened on the circumference of the arc ring; a snail-shaped protrusion is fixed on one surface of the slider, and the slider is meshed with the snail disk; the support table is installed in the mounting through hole. The present invention is safe and intelligent. After issuing a detection instruction to the micro-control end, the system can automatically complete a series of steps from natural gas detection to processing of detection information to alarm without manual operation. At the same time, the detection sensor is housed inside the shell in a rest state to prevent corrosion to the sensor caused by the outdoor environment and reduce the maintenance frequency. Natural gas pipelines are relatively long, and a large number of sensors are required during the detection process using the detection device. At the same time, these sensors are exposed to the outside and will be damaged after a period of use. Therefore, these sensors need to be maintained regularly, which increases the cost of maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide an unmanned inspection vehicle and method for daily inspection and leakage detection of natural gas pipelines, so as to solve the related problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines, comprising a bottom plate, a solar photovoltaic power generation group is arranged on one side of the top of the bottom plate, a storage battery is arranged on one side of the solar photovoltaic power generation group, a crawler drive mechanism is arranged at the bottom inside the bottom plate, crawlers are symmetrically arranged at both ends of the crawler drive mechanism, an auxiliary positioning mechanism is arranged in the middle of the top of the bottom plate, a connecting vertical plate is arranged on one side of the top of the bottom plate, a GPS positioning device is arranged on the top of one end of the connecting vertical plate, a camera connecting plate is arranged at the bottom of one end of the connecting vertical plate, and the camera is connected to the bottom of the vertical plate. A camera group is provided on one side of the head connecting plate, an air extraction mechanism is provided at the bottom of one side of the connecting vertical plate, a WiFi signal transmission mechanism is provided on the top of one side of the connecting vertical plate, a connecting plate is provided in the middle of the connecting vertical plate away from the WiFi signal transmission mechanism, a mounting frame is provided on one side of the connecting plate, a first electric cylinder is provided on the top of the mounting frame, a lifting plate is provided at the output end of the first electric cylinder, a plurality of drilling devices are evenly provided at the bottom of the lifting plate, an anti-collision plate is provided on one side of the crawler drive mechanism, a bulldozer is provided inside the crawler drive mechanism, and a first gas concentration detection device is provided on one side of the connecting vertical plate; The auxiliary positioning mechanism includes a marking plate loading slot, a pull plate, a push plate, a second electric cylinder, a marking plate, a limit plate, a guide tube, a spring, a sliding rod, and a loading bin. The loading bin is located in the middle of the top of the bottom plate, a guide tube is provided at one end of the loading bin, a sliding rod is slidably connected inside the guide tube, a spring is provided on the outside of the sliding rod, one end of the sliding rod extends to the interior of the loading bin and is provided with a push plate, a pull plate is provided on the top of the push plate, a marking plate loading slot is provided on the top of the loading bin, the pull plate is located inside the marking plate loading slot, multiple groups of marking plates are slidably connected inside the loading bin, a limit plate is provided on one side of one end of the loading bin, and a second electric cylinder is provided at one end of the top of the loading bin.

[0006] Furthermore, the exhaust mechanism includes a mounting shell, a second gas concentration detection device, a first mounting plate, a first ventilation pipe, an exhaust pump, a second mounting plate, an exhaust head, a cover plate, a ventilation main pipe, and a second ventilation pipe. The mounting shell is located on one side of the connecting vertical plate, a ventilation main pipe is provided at the bottom of the mounting shell, a cover plate is provided at the bottom of the ventilation main pipe, an exhaust head is provided inside the cover plate, a second mounting plate is provided on one side inside the mounting shell, an exhaust pump is provided on the top of the second mounting plate, a second ventilation pipe is provided at the input end of the exhaust pump, the second ventilation pipe and the ventilation main pipe are connected to each other, a first ventilation pipe is provided at the output end of the second mounting plate, a second gas concentration detection device is provided at the top inside the mounting shell, a second gas concentration detection device is provided at the top of the first mounting plate, the first ventilation pipe is connected to the second gas concentration detection device, and can extract natural gas from the ground.

[0007] Furthermore, the anti-collision plate is made of an arc-shaped structure, a mounting groove is provided on one side of the anti-collision plate, and an anti-collision guide wheel is provided inside the mounting groove. When the inspection vehicle collides, the front end of the inspection vehicle can be protected, and the impact force of the inspection can be buffered to prevent the inspection vehicle from being damaged.

[0008] Furthermore, L-shaped mounting plates are symmetrically provided on both sides of the first electric cylinder, and the L-shaped mounting plates are connected to the mounting frame by locking bolts, so that the first electric cylinder can be fixed on the top of the mounting frame to prevent the first electric cylinder from shifting during operation and ensure its stability during operation. A through groove is provided on the top of the mounting frame, and the output end of the first electric cylinder extends to the interior of the mounting frame through the through groove and is connected to the lifting plate, so that the output end of the first electric cylinder extends to the interior of the mounting frame to connect with the lifting plate, which is convenient for subsequently driving the lifting plate and the drilling device to lift and lower for drilling.

[0009] Furthermore, the cover plate is made of a conical structure, and the vacuum head is located inside the cover plate, so that the vacuum head can better absorb the gas inside the hole, which is convenient for collecting the gas. A mounting hole is provided at the bottom of the mounting shell, and the bottom of the ventilation main pipe extends to the bottom of the mounting shell through the mounting hole, which is convenient for installation, so that the ventilation main pipe can be fixed inside the mounting shell. A mounting frame is provided on the top of the second mounting plate, and the vacuum pump and the mounting frame are interconnected to prevent the vacuum pump from moving, thereby ensuring the stability of the vacuum pump during installation.

[0010] Furthermore, the limit plate is made of an L-shaped structure, so that the marking plate can slide out from the limit plate to the outside, and can also limit the front end of the marking plate. Pads are provided at both ends of the marking plate, so that a certain gap is generated between multiple groups of marking plates, making it convenient for the second electric cylinder to push a marking plate downward.

[0011] Furthermore, a sliding hole is provided between the guide tube and the loading bin, the sliding rod is located inside the sliding hole, a limiting ring is provided on the outside of the sliding rod, and the diameter of the limiting ring is larger than the diameter of the sliding hole, and the spring and the limiting ring are connected to each other, so that the sliding rod can slide into the interior of the loading bin while preventing the sliding rod from falling out to the outside, thereby ensuring stability during the connection process.

[0012] Furthermore, the camera group is composed of an infrared camera and a camera. A normal camera is used to work during the day, and the infrared camera can capture the night situation at night, so that the inspection vehicle can work in a night environment. Fixed plates are symmetrically provided on the top and bottom of the camera connecting plate, and the fixed plates are connected to the connecting vertical plates by locking bolts. When the camera is damaged, it is convenient to remove the camera for maintenance and replacement, reducing the difficulty of maintenance.

[0013] Furthermore, a reinforcing plate is provided on the top of the connecting plate, and the reinforcing plate is connected to the connecting vertical plate to improve the strength during the connection process and prevent it from being offset.

[0014] Compared with the prior art, the present invention provides an unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines, which has the following beneficial effects: The present invention, through the cooperation of the base plate, the crawler drive mechanism, the crawler, the camera group, the first gas concentration detection device, the GPS positioning device, the connecting vertical plate, and the WiFi signal transmission mechanism, can enable the device to inspect along the route of the pipeline during the inspection of the natural gas pipeline. When the natural gas concentration changes on a section of the route, the data can be detected in time to avoid continuous leakage of natural gas, and the location of the leakage can be located. In addition, during the inspection, the image of the flatness of the ground can be compared to prevent the location of the natural gas pipeline from being dug up by other construction teams.

[0015] The present invention can perform drilling and exhaust operations at the leakage location after preliminarily detecting the location of the natural gas leakage through the cooperation of a drilling device, a lifting plate, a mounting frame, a first electric cylinder, a mounting shell, a second gas concentration detection device, a first mounting plate, a first ventilation pipe, an exhaust pump, a second mounting plate, an exhaust head, a cover plate, a ventilation main pipe, and a second ventilation pipe, so as to accurately locate the location where the maximum concentration of natural gas emitted from the ground is obtained, thereby effectively reducing the scope of ground excavation required for subsequent maintenance.

[0016] The present invention can perform auxiliary positioning with the cooperation of the marking plate filling slot, the pull plate, the push plate, the second electric cylinder, the marking plate, the limit plate, the guide tube, the spring, the slide rod and the filling bin. After the GPS positioning device has located the leak, the marking plate can be inserted into the ground. When subsequent maintenance personnel arrive nearby using the positioning information, they can directly observe the location where they have reached the positioning using the marking plate, and there is no need to observe the positioning information for searching, thereby reducing the convenience during the maintenance process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a front cross-sectional view of the present invention; Figure 3 A side view of the lifting plate of the present invention; Figure 4 A top view of the bottom plate of the present invention; Figure 5 A side view of the bottom plate of the present invention; Figure 6 It is a front cross-sectional view of the air extraction mechanism of the present invention; Figure 7It is a side sectional view of the auxiliary positioning mechanism of the present invention.

[0018] In the figure: 1, bottom plate; 2, crawler drive mechanism; 3, crawler; 4, camera connecting plate; 5, camera group; 6, first gas concentration detection device; 7, anti-collision plate; 8, connecting plate; 9, drilling device; 10, lifting plate; 11, installation frame; 12, first electric cylinder; 13, GPS positioning device; 14, connecting vertical plate; 15, WiFi signal transmission mechanism; 16, exhaust mechanism; 161, installation shell; 162, second gas concentration detection device; 163, first installation plate; 164, first pass Air pipe; 165, vacuum pump; 166, second mounting plate; 167, vacuum head; 168, cover plate; 169, ventilation main pipe; 1610, second ventilation pipe; 17, auxiliary positioning mechanism; 171, marking plate loading groove; 172, pull plate; 173, push plate; 174, second electric cylinder; 175, marking plate; 176, limit plate; 177, guide tube; 178, spring; 179, slide rod; 1710, loading bin; 18, battery; 19, solar photovoltaic power generation group; 20, bulldozer. DETAILED DESCRIPTION

[0019] 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. Example

[0020] See also Figure 1-Figure 5, an unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines, comprising a bottom plate 1, a solar photovoltaic power generation group 19 is provided on one side of the top of the bottom plate 1, a battery 18 is provided on one side of the solar photovoltaic power generation group 19, a crawler drive mechanism 2 is provided at the bottom inside the bottom plate 1, crawlers 3 are symmetrically provided at both ends of the crawler drive mechanism 2, so that the device can move along the ground, an auxiliary positioning mechanism 17 is provided at the middle of the top of the bottom plate 1, a connecting vertical plate 14 is provided on one side of the top of the bottom plate 1, a GPS positioning device 13 is provided on the top of one end of the connecting vertical plate 14 to locate the position of the leak, so as to facilitate the subsequent maintenance of the pipeline at the designated position, a camera connecting plate 4 is provided at the bottom of one end of the connecting vertical plate 14, and the camera connecting plate 4 is provided at the bottom of the camera connecting plate 4. A camera group 5 is provided on one side, an exhaust mechanism 16 is provided at the bottom of one side of the connecting vertical plate 14, a WiFi signal transmission mechanism 15 is provided at the top of one side of the connecting vertical plate 14, a connecting plate 8 is provided in the middle of the connecting vertical plate 14 away from the WiFi signal transmission mechanism 15, a mounting frame 11 is provided on one side of the connecting plate 8, a first electric cylinder 12 is provided on the top of the mounting frame 11, a lifting plate 10 is provided at the output end of the first electric cylinder 12, and a plurality of drilling devices 9 are evenly provided on the bottom of the lifting plate 10, which can drill holes on the ground to facilitate the subsequent extraction of underground gas for detection, an anti-collision plate 7 is provided on one side of the crawler drive mechanism 2, a bulldozer 20 is provided inside the crawler drive mechanism 2, and a first gas concentration detection device 6 is provided on one side of the connecting vertical plate 14.

[0021] General natural gas detection devices are manually inspected along designated routes, while this device can automatically inspect along the route of the pipeline without manual movement along the pipeline. When the natural gas concentration changes on a section of the route, the data can be detected in time to avoid continuous leakage of natural gas. The location of the leak can also be located, and the image of the flatness of the ground can be compared during the inspection to prevent the location of the natural gas pipeline from being dug up by other construction teams.

[0022] During the inspection process, the device uses the crawler 3 to drive the crawler drive mechanism 2 and the bottom plate 1 to move, so that the inspection vehicle inspects along the pipeline line. During the inspection process, the camera group 5 is used to collect image information, and the WiFi data is transmitted to the cloud through the WiFi signal transmission mechanism 15. The staff enters the cloud system to monitor the device and can observe the picture in real time. At night, the infrared camera on the camera group 5 can observe the night situation. If the ground is uneven or excavation occurs, it can be observed in time. At the same time, during the movement of the inspection vehicle, the first gas concentration detection device 6 can detect the concentration of natural gas in the air, and the data at the detection point can be received by the WiFi signal transmission mechanism 15, and then the WiFi signal is used for data transmission, so that the indoor staff can also directly observe through the cloud. When natural gas is detected, the GPS positioning device 13 is used for positioning, which is convenient for subsequent finding of the leak location; At the same time, during the daily operation of the inspection vehicle, the solar photovoltaic power generation group 19 can convert solar energy into electrical energy and then use the photovoltaic inverter to convert direct current into alternating current and store it in the battery 18. The electrical energy inside the battery 18 then powers the electrical appliances on the inspection vehicle, so that the inspection vehicle can perform inspection work for a long time.

[0023] The anti-collision plate 7 is made of an arc-shaped structure, one side of the anti-collision plate 7 is provided with a mounting groove, and the interior of the mounting groove is provided with an anti-collision guide wheel. When the inspection vehicle collides, the front end of the inspection vehicle can be protected, and the impact force of the inspection can be buffered to prevent the inspection vehicle from being damaged.

[0024] L-shaped mounting plates are symmetrically provided on both sides of the first electric cylinder 12, and the L-shaped mounting plates are connected to the mounting frame 11 by locking bolts, so that the first electric cylinder 12 can be fixed on the top of the mounting frame 11 to prevent the first electric cylinder 12 from shifting during operation and ensure its stability during operation. A through groove is provided on the top of the mounting frame 11, and the output end of the first electric cylinder 12 extends to the inside of the mounting frame 11 through the through groove and is connected to the lifting plate 10, so that the output end of the first electric cylinder 12 extends to the inside of the mounting frame 11 to connect with the lifting plate 10, which is convenient for subsequently driving the lifting plate 10 and the drilling device 9 to lift and drill holes.

[0025] The camera group 5 is composed of an infrared camera and a camera. A normal camera is used to work during the day, and the infrared camera can capture the night situation at night, so that the inspection vehicle can work in a night environment. Fixed plates are symmetrically provided on the top and bottom of the camera connecting plate 4, and the fixed plates are connected to the connecting vertical plates 14 through locking bolts. When the camera is damaged, it is convenient to remove the camera for maintenance and replacement, reducing the difficulty of maintenance.

[0026] A reinforcing plate is provided on the top of the connecting plate 8, and the reinforcing plate is connected to the connecting vertical plate 14 to improve the strength during the connection process and prevent it from deflecting. Example

[0027] See also Figure 1 and Figure 6 , further changes were made on the basis of Example 1: The exhaust mechanism 16 includes a mounting shell 161, a second gas concentration detection device 162, a first mounting plate 163, a first ventilation pipe 164, an exhaust pump 165, a second mounting plate 166, an exhaust head 167, a cover plate 168, an air pipe 169, and a second air pipe 1610. The mounting shell 161 is located on one side of the connecting vertical plate 14. The bottom of the mounting shell 161 is provided with an air pipe 169, the bottom of the air pipe 169 is provided with a cover plate 168, the interior of the cover plate 168 is provided with an exhaust head 167, and one side of the interior of the mounting shell 161 A second mounting plate 166 is provided, a vacuum pump 165 is provided on the top of the second mounting plate 166, a second ventilation pipe 1610 is provided at the input end of the vacuum pump 165, the second ventilation pipe 1610 is interconnected with the ventilation main pipe 169, a first ventilation pipe 164 is provided at the output end of the second mounting plate 166, a second gas concentration detection device 162 is provided at the top inside the mounting shell 161, a second gas concentration detection device 162 is provided on the top of the first mounting plate 163, and the first ventilation pipe 164 is connected to the second gas concentration detection device 162.

[0028] During some inspections, some equipment can detect the specific leakage location very well. After the inspection vehicle initially detects the location of the natural gas leakage, it can drill holes and extract gas at the leakage location to accurately locate the place with the highest concentration of natural gas emitted from the ground, thereby effectively reducing the scope of ground excavation required for subsequent maintenance.

[0029] After the natural gas leak is detected, the detection vehicle is moved to the position of the leak, and the first electric cylinder 12 and the drilling device 9 are started at each end distance, so that the first electric cylinder 12 drives the lifting plate 10 and the multiple sets of drilling devices 9 to move downward. When the drilling device 9 is started and moves downward, the ground is drilled. After the drilling is completed, the drilling device 9 is lifted up and moved upward, and then the exhaust mechanism 16 on the vehicle is moved to the drilling position. At this time, the exhaust pump 165 is started again, so that the exhaust pump 165 extracts the gas at the drilling position through the second ventilation pipe 1610, the ventilation main pipe 169 and the exhaust head 167, so that the device can extract the natural gas contained in the ground, and then the natural gas is transmitted through the first ventilation pipe 164. The data are sent to the second gas concentration detection device 162, and the second gas concentration detection device 162 is used to detect the concentration of natural gas. Then, the concentration information is transmitted to the WiFi signal transmission mechanism 15, and the WiFi signal transmission mechanism 15 is used to transmit the signals to the cloud, so that the people in the room can collect these data. At the same time, the GPS positioning device 13 is used to locate each drilling position during the collection process. After collecting data from multiple positions, the information of these data is compared, and the position with the highest concentration is the position closest to the leakage point. At the same time, after the data collection of the drilling position is completed, the detection vehicle will drive the bulldozer 20 to push the soil on the ground, so that the soil covers the drilling hole position.

[0030] The cover plate 168 is made of a conical structure, and the vacuum head 167 is located inside the cover plate 168, so that the vacuum head 167 can better absorb the gas inside the hole, which is convenient for collecting the gas. A mounting hole is provided at the bottom of the mounting shell 161, and the bottom of the ventilation main pipe 169 extends to the bottom of the mounting shell 161 through the mounting hole, which is convenient for installation, so that the ventilation main pipe 169 can be fixed inside the mounting shell 161. A mounting frame is provided on the top of the second mounting plate 166, and the vacuum pump 165 is connected to the mounting frame to prevent the vacuum pump 165 from moving, thereby ensuring the stability of the vacuum pump 165 during installation. Example

[0031] See also Figure 1 and Figure 7 , which is different from the second embodiment in that: The auxiliary positioning mechanism 17 includes a marking plate loading slot 171, a pull plate 172, a push plate 173, a second electric cylinder 174, a marking plate 175, a limit plate 176, a guide tube 177, a spring 178, a slide bar 179, and a loading bin 1710. The loading bin 1710 is located in the middle of the top of the bottom plate 1. A guide tube 177 is provided at one end of the loading bin 1710. The interior of the guide tube 177 is slidably connected to a slide bar 179. A spring 178 is provided on the outside of the slide bar 179. One end of the sliding rod 179 extends to the interior of the loading bin 1710 and is provided with a push plate 173, the top of the push plate 173 is provided with a pull plate 172, the top of the loading bin 1710 is provided with a marking plate loading groove 171, the pull plate 172 is located inside the marking plate loading groove 171, the interior of the loading bin 1710 is slidably connected with multiple groups of marking plates 175, a limiting plate 176 is provided on one side of one end of the loading bin 1710, and a second electric cylinder 174 is provided at one end of the top of the loading bin 1710.

[0032] After the location of the leak is located, sometimes the staff arrives at the designated vicinity and needs to search, confirm and compare for a period of time before they can fully determine the location. After the device has determined the location, it can perform auxiliary positioning. When the GPS positioning device 13 locates the leak, it can insert the marking plate 175 into the ground. When subsequent maintenance personnel arrive at the vicinity using the positioning information, they can directly observe the location they have reached using the marking plate 175, and there is no need to observe the positioning information to search, thereby reducing the convenience of the maintenance process.

[0033] After the location of the leak is determined, the inspection vehicle is remotely controlled to move to the determined leak location, and then the second electric cylinder 174 is started. At this time, the output end of the second electric cylinder 174 applies pressure to the marking plate 175, and then the bottom of the marking plate 175 is inserted into the mud ground. After the insertion is completed, the inspection vehicle is controlled to move forward. Since the bottom of the marking plate 175 is fixed inside the ground, the fixed marking plate 175 slides relatively along the limit plate 176 during the forward movement of the inspection vehicle, and then a gap is generated between the next marking plate 175 and the limit plate 176. At this time, the spring 178 is reset again to drive the sliding rod 179 and the push plate 173 so that the push plate 173 pushes the multiple groups of marking plates 175 to move, so that the next marking plate 175 is automatically loaded to the outside, and the marking plate 175 will not fall under the action of the clamping force. Then, in the subsequent process of finding the location, when the maintenance personnel arrive near the leak, they can directly observe the location through the marking plate 175; When the marking plate 175 needs to be replenished, the push plate 173 is pulled by the pull plate 172, and then the marking plate 175 is inserted into the interior of the filling bin 1710 along the marking plate filling slot 171, so as to replenish the number of marking plates 175.

[0034] The limiting plate 176 is made of an L-shaped structure, so that the marking plate 175 can slide out from the limiting plate 176 to the outside, and can also limit the front end of the marking plate 175. Pads are provided at both ends of the marking plate 175, so that a certain gap is generated between multiple groups of marking plates 175, which facilitates the second electric cylinder 174 to push a marking plate 175 to move downward.

[0035] A sliding hole is provided between the guide tube 177 and the loading bin 1710, and the sliding rod 179 is located inside the sliding hole. A limiting ring is provided on the outer side of the sliding rod 179, and the diameter of the limiting ring is larger than the diameter of the sliding hole. The spring 178 and the limiting ring are connected to each other, so that the sliding rod 179 can slide into the interior of the loading bin 1710, while preventing the sliding rod 179 from slipping out to the outside, thereby ensuring stability during the connection process.

[0036] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. An unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines, comprising a base plate (1), characterized in that: A solar photovoltaic power generation group (19) is provided on one side of the top of the base plate (1), and a storage battery (18) is provided on one side of the solar photovoltaic power generation group (19). A crawler drive mechanism (2) is provided at the bottom of the base plate (1), and crawlers (3) are symmetrically provided at both ends of the crawler drive mechanism (2). An auxiliary positioning mechanism (17) is provided at the middle of the top of the base plate (1). A connecting vertical plate (14) is provided on one side of the top of the base plate (1), and a GPS positioning device (13) is provided at the top of one end of the connecting vertical plate (14). A camera connecting plate (4) is provided at the bottom of one end of the connecting vertical plate (14), and a camera group (5) is provided on one side of the camera connecting plate (4). An air pump is provided at the bottom of one side of the connecting vertical plate (14). A structure (16), a WiFi signal transmission mechanism (15) is provided at the top of one side of the connecting vertical plate (14), a connecting plate (8) is provided at the middle of the side of the connecting vertical plate (14) away from the WiFi signal transmission mechanism (15), a mounting frame (11) is provided at one side of the connecting plate (8), a first electric cylinder (12) is provided at the top of the mounting frame (11), a lifting plate (10) is provided at the output end of the first electric cylinder (12), a plurality of drilling devices (9) are evenly provided at the bottom of the lifting plate (10), an anti-collision plate (7) is provided at one side of the crawler drive mechanism (2), a bulldozer (20) is provided inside the crawler drive mechanism (2), and a first gas concentration detection device (6) is provided at one side of the connecting vertical plate (14); The auxiliary positioning mechanism (17) comprises a marking plate loading groove (171), a pull plate (172), a push plate (173), a second electric cylinder (174), a marking plate (175), a limit plate (176), a guide tube (177), a spring (178), a slide rod (179), and a loading bin (1710). The loading bin (1710) is located in the middle of the top of the bottom plate (1). One end of the loading bin (1710) is provided with a guide tube (177). The interior of the guide tube (177) is slidably connected to a slide rod (179). The outer side of the slide rod (179) is provided with a spring (178). ), one end of the sliding rod (179) extends to the interior of the loading bin (1710) and is provided with a push plate (173), the top of the push plate (173) is provided with a pull plate (172), the top of the loading bin (1710) is provided with a marking plate loading groove (171), the pull plate (172) is located inside the marking plate loading groove (171), the interior of the loading bin (1710) is slidably connected to multiple groups of marking plates (175), a limiting plate (176) is provided on one side of one end of the loading bin (1710), and a second electric cylinder (174) is provided at one end of the top of the loading bin (1710).

2. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized in that: The exhaust mechanism (16) comprises a mounting shell (161), a second gas concentration detection device (162), a first mounting plate (163), a first ventilation pipe (164), an exhaust pump (165), a second mounting plate (166), an exhaust head (167), a cover plate (168), an exhaust main pipe (169), and a second exhaust pipe (1610). The mounting shell (161) is located on one side connected to the vertical plate (14). The exhaust main pipe (169) is provided at the bottom of the mounting shell (161). The cover plate (168) is provided at the bottom of the exhaust main pipe (169). The exhaust head (167) is provided inside the cover plate (168). A second mounting plate (166) is provided on one side of the housing, a vacuum pump (165) is provided on the top of the second mounting plate (166), a second ventilation pipe (1610) is provided at the input end of the vacuum pump (165), the second ventilation pipe (1610) is connected to the ventilation main pipe (169), a first ventilation pipe (164) is provided at the output end of the second mounting plate (166), a second gas concentration detection device (162) is provided on the top of the interior of the mounting shell (161), a second gas concentration detection device (162) is provided on the top of the first mounting plate (163), and the first ventilation pipe (164) is connected to the second gas concentration detection device (162).

3. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized in that: The anti-collision plate (7) is made of an arc-shaped structure, a mounting groove is provided on one side of the anti-collision plate (7), and an anti-collision guide wheel is provided inside the mounting groove.

4. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized by: L-shaped mounting plates are symmetrically provided on both sides of the first electric cylinder (12), and the L-shaped mounting plates are connected to the mounting frame (11) via locking bolts; a through slot is provided on the top of the mounting frame (11), and an output end of the first electric cylinder (12) extends through the through slot to the interior of the mounting frame (11) and is connected to the lifting plate (10).

5. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 2 is characterized by: The cover plate (168) is made of a conical structure, the vacuum head (167) is located inside the cover plate (168), a mounting hole is provided at the bottom of the mounting shell (161), the bottom of the ventilation main pipe (169) extends to the bottom of the mounting shell (161) through the mounting hole, a mounting frame is provided at the top of the second mounting plate (166), and the vacuum pump (165) is connected to the mounting frame.

6. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized by: The limiting plate (176) is made of an L-shaped structure, and pads are provided at both ends of the marking plate (175).

7. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized by: A sliding hole is provided between the guide tube (177) and the loading bin (1710), the sliding rod (179) is located inside the sliding hole, a limiting ring is provided on the outside of the sliding rod (179), and the diameter of the limiting ring is greater than the diameter of the sliding hole, and the spring (178) and the limiting ring are connected to each other.

8. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized by: The camera group (5) is composed of an infrared camera and a camera, and fixing plates are symmetrically provided at the top and bottom of the camera connecting plate (4), and the fixing plates are connected to the connecting vertical plates (14) via locking bolts.

9. The unmanned inspection vehicle for daily inspection and leakage detection of natural gas pipelines according to claim 1 is characterized by: A reinforcing plate is provided on the top of the connecting plate (8), and the reinforcing plate and the connecting vertical plate (14) are connected to each other.

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