CN212433433U - Underground pipeline detecting instrument - Google Patents
Underground pipeline detecting instrument Download PDFInfo
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- CN212433433U CN212433433U CN202021264513.0U CN202021264513U CN212433433U CN 212433433 U CN212433433 U CN 212433433U CN 202021264513 U CN202021264513 U CN 202021264513U CN 212433433 U CN212433433 U CN 212433433U
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Abstract
The utility model belongs to the technical field of the technique of underground exploration and specifically relates to a pipeline detection instrument is related to, the test instrument comprises an instrument body, fixed surface is connected with the probe under the instrument body, still include the display screen, instrument body downside is connected with the bottom plate through detaching mechanism, the bottom plate is equipped with the connecting hole that the probe passed, a vertical side fixedly connected with backup pad of bottom plate, the display screen passes through the upper surface of coupling mechanism connection with the backup pad and is connected, one side fixedly connected with two pairs of first connecting plates of backup pad are kept away from to the bottom plate lower surface, every is equipped with the gyro wheel between every pair of first connecting plate, the gyro wheel is connected with the dwang, the dwang passes gyro wheel and gyro wheel fixed connection, the dwang passes first connecting plate and rotates with first connecting plate and is connected, the one end of dwa. The utility model discloses laborsaving effect in the testing process has.
Description
Technical Field
The utility model belongs to the technical field of the technique of underground exploration and specifically relates to a pipeline detection instrument.
Background
With the progress of society, more and more tap water pipelines, heat pipelines, gas pipelines and the like are laid on the ground, and in order to ensure the safety of the pipelines, the pipelines need to be detected. The underground pipeline detector can quickly and accurately detect the position, the trend and the depth of an underground tap water pipeline, a metal pipeline, a cable and the like and the position and the size of a damaged point of an anticorrosive coating of a steel pipeline under the condition of not damaging soil attached to the ground.
The current chinese utility model patent that authorizes bulletin number is CN208444028U discloses a backpack underground pipeline detection instrument, including instrument body and probe, the braces is installed to the horizontal lateral surface of instrument body, and support frame and flexible pipe are installed respectively to the vertical both sides of instrument body. The inside of support frame is installed with the rotary rod through the damping axle, and the tip of rotary rod is installed through the damping bearing and is born the axle, bears the tip of axle and installs the display screen, and the display screen is connected with the instrument body electricity. The end part of the telescopic pipe is provided with a fixed pipe, and the electric connection between the probe and the instrument body is conveniently realized through the telescopic pipe and the fixed pipe. In the detection process, the detection personnel carry the instrument body by the straps and then carry out detection work.
The above prior art solutions have the following drawbacks: in the testing process, need the staff to carry on the back the instrument body always, carry on the back the instrument body for a long time and cause the back fatigue of measurement personnel easily, it is harder.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing an underground pipeline detection instrument, it has laborsaving effect in the testing process.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: an underground pipeline detector comprises an instrument body, a probe fixedly connected with the lower surface of the instrument body, and a display screen, the lower side of the instrument body is connected with a bottom plate through a dismounting mechanism, the bottom plate is provided with a connecting hole through which a probe passes, a supporting plate is fixedly connected to one vertical side surface of the bottom plate, the display screen is connected with the upper surface of the supporting plate through a connecting mechanism, one side of the lower surface of the bottom plate, which is far away from the supporting plate, is fixedly connected with two pairs of first connecting plates, a roller is arranged between each pair of first connecting plates, the idler wheel is connected with a rotating rod, the rotating rod penetrates through the idler wheel and is fixedly connected with the idler wheel, the rotating rod penetrates through the first connecting plate and is rotatably connected with the first connecting plate, one end of the dwang is connected with and drives dwang pivoted actuating mechanism, the lower surface of bottom plate is close to a pair of universal wheel of one side fixedly connected with of backup pad.
Through adopting above-mentioned technical scheme, the instrument body is connected through linking the detaching mechanism with the bottom plate, and the probe passes the connecting hole setting, and the display screen passes through coupling mechanism and connects, and the dwang rotates with first connecting plate to be connected, and actuating mechanism drives the gyro wheel and rotates, and gyro wheel pivoted in-process drives the bottom plate and moves forward. The bottom plate drives the instrument body to move forwards, the instrument body drives the probe to move forwards, and the probe detects the underground pipeline. The bottom plate drives the backup pad and moves forward, and the backup pad drives the display screen and moves forward, and the display screen sets up towards measurement personnel, and measurement personnel observe the data that the display screen shows at the in-process that detects the underground utility, and at the in-process of bottom plate motion, the universal wheel makes things convenient for the bottom plate to turn to. In the testing process, the instrument body is not required to be carried by the worker, and the labor-saving effect in the testing process is achieved.
The present invention may be further configured in a preferred embodiment as: the disassembly mechanism comprises connecting blocks fixedly connected with one side of the instrument body close to the supporting plate and one side of the instrument body far away from the supporting plate respectively, the upper surface of the bottom plate is close to the supporting rods fixedly connected with the connecting blocks respectively, the top end of each supporting rod is rotatably connected with a pressing plate which can only rotate around the axis of the supporting rod, and the lower surface of the pressing plate is abutted to the upper surface of the connecting block.
Through adopting above-mentioned technical scheme, when the lower surface of instrument body and the upper surface butt of bottom plate, rotate and support the clamp plate, support the lower surface of clamp plate and the inseparable butt of upper surface of connecting block. The pressing plate presses the connecting block, so that the instrument body is connected with the bottom plate, and the connecting process is more convenient. When needs pull down the instrument body and overhaul, rotate and support the clamp plate, make to support the clamp plate not with the connecting block butt, support the clamp plate and no longer block the connecting block, separate instrument body and bottom plate.
The present invention may be further configured in a preferred embodiment as: the lower surface of the abutting plate is fixedly connected with a first anti-skid pad.
Through adopting above-mentioned technical scheme, when the upper surface butt of the lower surface that supports the clamp plate and connecting block, the upper surface contact of first slipmat and connecting block increases the stability when supporting the clamp plate and pushing down the connecting block.
The present invention may be further configured in a preferred embodiment as: the lower surface of the connecting block is fixedly connected with an inserting block respectively, a pair of inserting grooves are formed in the upper surface of the bottom plate, and the inserting block is inserted into the inserting grooves.
Through adopting above-mentioned technical scheme, when holding the clamp plate and suppressing the connecting block, the grafting piece is pegged graft with the inserting groove, increases the stability when holding the clamp plate and suppressing the connecting block.
The present invention may be further configured in a preferred embodiment as: the connecting block upper surface fixedly connected with first magnet, support one side fixedly connected with second magnet that the clamp plate is close to first magnet, first magnet and second magnet attract the butt.
Through adopting above-mentioned technical scheme, when holding the clamp plate and suppressing the connecting block, first magnet and second magnet attract the butt each other, increase the stability when holding down the connecting block by holding the clamp plate.
The present invention may be further configured in a preferred embodiment as: the actuating mechanism includes the one end fixed connection's of dwang first gear, the vertical side fixedly connected with second connecting plate that the bottom plate is close to first gear, surface fixedly connected with buncher under the second connecting plate, buncher's output shaft fixedly connected with and the second gear that first gear engagement is connected.
Through adopting above-mentioned technical scheme, buncher drives the second gear rotation, and the second gear drives first gear rotation, and first gear drives the dwang and rotates, and the dwang drives the gyro wheel and rotates. The speed regulating motor drives the roller to rotate, the roller drives the bottom plate to move forwards, a worker only needs to hold the handle to master the direction, the supporting plate does not need to be pushed forwards, and the labor-saving effect is achieved. By adopting the speed regulating motor, the rotation of the speed regulating motor can be regulated according to the requirement of actual conditions, and further the forward movement speed of the bottom plate is controlled.
The present invention may be further configured in a preferred embodiment as: coupling mechanism includes the head rod of a pair of vertical setting of backup pad upper surface fixed connection, the both sides difference fixedly connected with second connecting rod of display screen, the second connecting rod passes first dwang and rotates with first dwang to be connected, head rod upper surface threaded connection has fastening bolt, fastening bolt's lower extreme second dwang butt.
Through adopting above-mentioned technical scheme, fastening bolt's lower extreme and the inseparable butt of second connecting rod make the second connecting rod can not rotate, are fixed with the second connecting rod, and then are connected display screen and a pair of head rod. When adjusting display screen orientation measurement personnel's angle according to measurement personnel's needs, unscrew fastening bolt, fastening bolt no longer with the second connecting rod butt. The display screen is rotated, the angle of the display screen towards the detection personnel is adjusted, and after the angle is adjusted, the fastening bolt is screwed down, so that the fastening bolt is tightly abutted to the second connecting rod.
The present invention may be further configured in a preferred embodiment as: and the lower end of the fastening bolt is fixedly connected with a second anti-skid pad.
Through adopting above-mentioned technical scheme, when fastening bolt and the inseparable butt of second connecting rod, the skid-proof pad of second and second connecting rod butt increase the stability when fastening bolt and second connecting rod butt.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the driving mechanism drives the roller to rotate, the roller drives the bottom plate to move forwards in the rotating process, the bottom plate drives the instrument body to move forwards, and in the detection process, a worker does not need to carry the instrument body, so that the effect of saving labor in the detection process is achieved;
2. the pressing plate presses the connecting block, so that the instrument body is connected with the bottom plate, and the connecting process is more convenient.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
fig. 2 is a schematic view showing a rotating lever in the present embodiment;
FIG. 3 is a schematic view of the present embodiment showing a first cleat;
FIG. 4 is a schematic view showing a first magnet according to the present embodiment;
FIG. 5 is a schematic view showing a fastening bolt in the present embodiment;
FIG. 6 is a schematic view of the second cleat of this embodiment.
Reference numerals: 1. an instrument body; 11. a probe; 12. a display screen; 13. connecting blocks; 131. a first magnet; 132. an insertion block; 2. a base plate; 21. connecting holes; 22. a first connecting plate; 23. a roller; 24. a universal wheel; 25. rotating the rod; 251. a first gear; 26. a support bar; 261. pressing the plate; 262. a first non-slip mat; 263. a second magnet; 27. inserting grooves; 28. a second connecting plate; 281. a speed-regulating motor; 282. a second gear; 3. a support plate; 31. a handle; 32. a first connecting rod; 33. a second connecting rod; 34. fastening a bolt; 341. and a second non-slip mat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, for the utility model discloses an underground pipeline detecting instrument, including instrument body 1, fixed surface is connected with probe 11 under instrument body 1 to probe 11 is connected with instrument body 1 electricity. The instrument body 1 is electrically connected with the display screen 12.
As shown in fig. 1 and 2, a bottom plate 2 is connected to the lower side of the apparatus body 1 through a connection mechanism, the bottom plate 2 is provided with a connection hole 21 penetrating through the upper and lower surfaces of the bottom plate 2, the lower end of the probe 11 penetrates through the connection hole 21, and the probe 11 is opposite to the ground for detection.
A supporting plate 3 is fixedly connected to a vertical side surface of the bottom plate 2, and a handle 31 is fixedly connected to one side of the supporting plate 3 far away from the instrument body 1. The display screen 12 is connected with the upper surface of the supporting plate 3 through a connecting mechanism.
Two pairs of first connecting plates 22 are fixedly connected to one side of the lower surface of the bottom plate 2, which is far away from the supporting plate 3, and rollers 23 are respectively arranged in the middle of each pair of first connecting plates 22. The roller 23 is connected with a rotating rod 25, and the rotating rod 25 penetrates through the roller 23 and is fixedly connected with the roller 23. The rotating rod 25 passes through the two pairs of first connecting plates 22, and the rotating rod 25 is rotatably connected to the first connecting plates 22.
The end of the rotating rod 25 passing through the first connecting plate 22 is connected with a driving mechanism, the driving mechanism drives the rotating rod 25 to rotate, and the rotating rod 25 drives the roller 23 to rotate. A pair of universal wheels 24 is fixedly connected to one side of the lower surface of the bottom plate 2 close to the supporting plate 3.
As shown in fig. 1 and fig. 2, the inspector holds the handle 31, the driving mechanism drives the roller 23 to rotate, and the roller 23 drives the bottom plate 2 to move forward during rotation. The bottom plate 2 drives the instrument body 1 to move forward, the instrument body 1 drives the probe 11 to move forward, and the probe 11 detects the underground pipeline. Bottom plate 2 drives backup pad 3 forward motion, and backup pad 3 drives display screen 12 forward motion, and display screen 12 is towards measurement personnel, and measurement personnel observes the data that display screen 12 shows at the in-process that detects the underground utility. In the testing process, do not need the staff to carry the instrument body 1 on back, have laborsaving effect in the testing process.
When the bottom plate 2 moves forwards, a worker holds the handle 31, and when the moving direction of the bottom plate 2 needs to be changed, the universal wheels 24 enable the turning process of the bottom plate 2 to be smoother.
As shown in fig. 3, the detaching mechanism includes a connecting block 13 fixedly connected to a side of the apparatus body 1 close to the supporting plate 3 (refer to fig. 1) and a side far from the supporting plate 3, respectively, and a lower surface of the connecting block 13 is in the same plane as a lower surface of the apparatus body 1. When the apparatus body 1 is connected to the bottom plate 2, the lower surface of the apparatus body 1 abuts against the upper surface of the bottom plate 2.
The upper surface of the bottom plate 2 is fixedly connected with support rods 26 (refer to fig. 1) near the connecting blocks 13, the top ends of the support rods 26 are rotatably connected with pressing plates 261, and the pressing plates 261 can only rotate around the axis of the support rods 26. When the lower surface of the instrument body 1 abuts against the upper surface of the bottom plate 2, the pressing plate 261 is rotated, and the lower surface of the pressing plate 261 abuts against the upper surface of the connecting block 13 tightly. The pressing plate 261 presses the connecting block 13, so that the instrument body 1 is connected with the bottom plate 2, and the connecting process is convenient.
The lower surface of the pressing plate 261 is fixedly connected with the first anti-slip pad 262, and when the lower surface of the pressing plate 261 is abutted to the upper surface of the connecting block 13, the first anti-slip pad 262 is in contact with the upper surface of the connecting block 13, so that the stability of the pressing plate 261 pressing the connecting block 13 is improved.
As shown in fig. 3 and 4, the upper surfaces of the connecting blocks 13 are fixedly connected with first magnets 131, and the sides of the pressing plates 261 close to the first magnets 131 are fixedly connected with second magnets 263. When the pressing plate 261 presses the connecting block 13, the first magnet 131 and the second magnet 263 attract each other and abut against each other, so that the stability of the pressing plate 261 when pressing the connecting block 13 is increased.
The lower surfaces of the connecting blocks 13 are fixedly connected with inserting blocks 132 respectively, and the upper surface of the bottom plate 2 is internally provided with a pair of inserting grooves 27. When the pressing plate 261 presses the connecting block 13, the insertion block 132 is inserted into the insertion groove 27, so that stability when the pressing plate 261 presses the connecting block 13 is improved.
When needing to pull down instrument body 1 and overhaul, rotate and support clamp plate 261, make and support clamp plate 261 not with connecting block 13 butt, support clamp plate 261 no longer blocks connecting block 13, first magnet 131 and the separation of second magnet 263. Move up instrument body 1, make plug block 132 and inserting groove 27 separation, pull down instrument body 1 and overhaul work, it is more convenient with the process that instrument body 1 pulled down.
As shown in fig. 1 and 2, the driving mechanism includes a first gear 251 fixedly connected to one end of the first connecting plate 22 through which the rotating rod 25 passes, and a second connecting plate 28 fixedly connected to a vertical side of the base plate 2 close to the first gear 251. A speed-regulating motor 281 is fixedly connected to the lower surface of the second connecting plate 28, and a second gear 282 engaged with the first gear 251 is fixedly connected to an output shaft of the speed-regulating motor 281.
The speed-regulating motor 281 drives the second gear 282 to rotate, the second gear 282 drives the first gear 251 to rotate, the first gear 251 drives the rotating rod 25 to rotate, and the rotating rod 25 drives the roller 23 to rotate. The speed regulating motor 281 drives the roller 23 to rotate, the roller 23 drives the bottom plate 2 to move forwards, a worker only needs to hold the handle 31 to master the direction, the supporting plate 3 does not need to be pushed forwards, and the labor saving effect is achieved. By adopting the speed regulating motor 281, the rotation of the speed regulating motor 281 can be adjusted according to the requirement of actual situation, and further the forward movement speed of the bottom plate 2 is controlled.
As shown in fig. 5 and 6, the connecting mechanism includes a pair of vertically disposed first connecting rods 32 (refer to fig. 1) fixedly connected to the upper surface of the supporting rod 26, and the display 12 is disposed between the pair of first connecting rods 32. The side surfaces of the display 12 close to the first connecting rods 32 are respectively and fixedly connected with second connecting rods 33 (refer to fig. 1), the second connecting rods 33 are respectively inserted into the first connecting rods 32 adjacent to the second connecting rods 33, and the second connecting rods 33 are rotatably connected with the first connecting rods 32.
The upper surface of one of the first connecting rods 32 is connected with a fastening bolt 34 through a thread, the lower end of the fastening bolt 34 is tightly abutted to the second connecting rod 33, so that the second connecting rod 33 cannot rotate, the second connecting rod 33 is fixed, and the display screen 12 is further connected with the pair of first connecting rods 32.
As shown in fig. 5 and 6, when the angle of the display screen 12 toward the inspector is adjusted according to the needs of the inspector, the fastening bolt 34 is loosened and the fastening bolt 34 is no longer in contact with the second link 33. The display screen 12 is rotated, the angle of the display screen 12 facing the detection personnel is adjusted, and after the angle is adjusted, the fastening bolt 34 is screwed down, so that the fastening bolt 34 is tightly abutted to the second connecting rod 33.
The lower end of the fastening bolt 34 is fixedly connected with a second anti-skid pad 341, and when the fastening bolt 34 is tightly abutted to the second connecting rod 33, the second anti-skid pad 341 is abutted to the second connecting rod 33, so that the stability of the fastening bolt 34 in abutting to the second connecting rod 33 is improved.
The implementation principle of the embodiment is as follows: when the instrument body 1 is connected to the base plate 2, the lower surface of the instrument body 1 abuts against the upper surface of the base plate 2, and the insertion block 132 is inserted into the insertion groove 27. The pressing plate 261 is rotated, and the lower surface of the pressing plate 261 is tightly abutted to the upper surface of the connecting block 13.
The speed-regulating motor 281 drives the second gear 282 to rotate, the second gear 282 drives the first gear 251 to rotate, the first gear 251 drives the rotating rod 25 to rotate, and the rotating rod 25 drives the roller 23 to rotate. The roller 23 drives the bottom plate 2 to move forward in the process of rotating. The bottom plate 2 drives the instrument body 1 to move forward, the instrument body 1 drives the probe 11 to move forward, and the probe 11 detects the underground pipeline. Bottom plate 2 drives backup pad 3 and moves forward, and the measurement personnel hold handle 31 control direction, and backup pad 3 drives display screen 12 and moves forward, and display screen 12 sets up towards measurement personnel, and measurement personnel observe the data that display screen 12 shows at the in-process that detects the underground utility.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an underground pipeline detection instrument, includes instrument body (1), fixed surface is connected with probe (11) under instrument body (1), still includes display screen (12), its characterized in that: the instrument body (1) downside is connected with bottom plate (2) through a dismounting mechanism, bottom plate (2) is equipped with connecting hole (21) that probe (11) passed, a vertical side fixedly connected with backup pad (3) of bottom plate (2), display screen (12) are connected with the upper surface of backup pad (3) through coupling mechanism, one side fixedly connected with two pairs of first connecting plate (22) that backup pad (3) were kept away from to bottom plate (2) lower surface, every is equipped with gyro wheel (23) between first connecting plate (22), gyro wheel (23) are connected with dwang (25), dwang (25) pass gyro wheel (23) and gyro wheel (23) fixed connection, dwang (25) pass first connecting plate (22) and are connected with first connecting plate (22) rotation, the one end of dwang (25) is connected with dwang drive (25) pivoted actuating mechanism, one side of the lower surface of the bottom plate (2) close to the supporting plate (3) is fixedly connected with a pair of universal wheels (24).
2. The underground utility detector according to claim 1, wherein: the disassembly body includes that instrument body (1) is close to one side of backup pad (3) and keeps away from one side of backup pad (3) connecting block (13) that one side fixed connection has respectively, bottom plate (2) upper surface is close to connecting block (13) punishment difference fixedly connected with bracing piece (26), bracing piece (26) top is rotated and is connected with axis pivoted that can only wind bracing piece (26) and is supported clamp plate (261), support the upper surface butt of clamp plate (261) lower surface and connecting block (13).
3. The underground utility detector according to claim 2, wherein: the lower surface of the pressing plate (261) is fixedly connected with a first anti-skid pad (262).
4. The underground utility detector according to claim 2, wherein: the lower surface of connecting block (13) is fixedly connected with grafting piece (132) respectively, bottom plate (2) upper surface is equipped with a pair of inserting groove (27) to the inside, grafting piece (132) are pegged graft with inserting groove (27).
5. The underground utility detector according to claim 2, wherein: fixed surface is connected with first magnet (131) on connecting block (13), it is close to one side fixedly connected with second magnet (263) of first magnet (131) to support clamp plate (261), first magnet (131) and second magnet (263) attract the butt.
6. The underground utility detector according to claim 2, wherein: the driving mechanism comprises a first gear (251) fixedly connected with one end of a rotating rod (25), the bottom plate (2) is close to a second connecting plate (28) fixedly connected with the vertical side face of the first gear (251), a speed regulating motor (281) is fixedly connected with the lower surface of the second connecting plate (28), and an output shaft of the speed regulating motor (281) is fixedly connected with a second gear (282) meshed with the first gear (251).
7. The underground utility detector according to claim 2, wherein: coupling mechanism includes the head rod (32) of a pair of vertical setting of fixed surface connection on backup pad (3), the both sides difference fixedly connected with second connecting rod (33) of display screen (12), second connecting rod (33) pass head rod (32) and rotate with head rod (32) and be connected, head rod (32) upper surface threaded connection has fastening bolt (34), lower extreme second dwang (25) butt of fastening bolt (34).
8. The underground utility detector according to claim 7, wherein: the lower end of the fastening bolt (34) is fixedly connected with a second anti-skid pad (341).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264513.0U CN212433433U (en) | 2020-06-30 | 2020-06-30 | Underground pipeline detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264513.0U CN212433433U (en) | 2020-06-30 | 2020-06-30 | Underground pipeline detecting instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212433433U true CN212433433U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021264513.0U Active CN212433433U (en) | 2020-06-30 | 2020-06-30 | Underground pipeline detecting instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219548A (en) * | 2021-04-29 | 2021-08-06 | 广东新达测绘科技有限公司 | Digital underground pipeline detecting instrument with stable structure |
| CN113958816A (en) * | 2021-11-03 | 2022-01-21 | 西南石油大学 | Gas pipeline flow noise detection device |
-
2020
- 2020-06-30 CN CN202021264513.0U patent/CN212433433U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219548A (en) * | 2021-04-29 | 2021-08-06 | 广东新达测绘科技有限公司 | Digital underground pipeline detecting instrument with stable structure |
| CN113958816A (en) * | 2021-11-03 | 2022-01-21 | 西南石油大学 | Gas pipeline flow noise detection device |
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Address after: Room 102, Building 12, MAX Innovation Technology Industrial Park, 151 Wangjiang Road, Huangdao District, Qingdao, Shandong 266000 Patentee after: Cheng'an Engineering Technology Group Co.,Ltd. Address before: Room 402, building 3, NO.666, Jiangshan South Road, Huangdao District, Qingdao City, Shandong Province 266500 Patentee before: Qingdao dexantai Geotechnical Engineering Co.,Ltd. |
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