CN208346799U - A kind of slope drainage pipe dredging device - Google Patents
A kind of slope drainage pipe dredging device Download PDFInfo
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- CN208346799U CN208346799U CN201820873463.2U CN201820873463U CN208346799U CN 208346799 U CN208346799 U CN 208346799U CN 201820873463 U CN201820873463 U CN 201820873463U CN 208346799 U CN208346799 U CN 208346799U
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Abstract
The utility model relates to side slope maintenance prevention equipment technical fields, specially a kind of slope drainage pipe dredging device, including drilling machine ontology, water pump and for providing the power supply of power to the drilling machine ontology and water pump, it is characterized by: the drilling machine ontology includes drilling machine components, sliceable drill rod assemblies and drill bit assembly, the drilling machine components are connect by sliceable drill rod assemblies with drill bit assembly;The junction of the drilling machine components and sliceable drill rod assemblies is equipped with the first water inlet pipe, and first water inlet pipe is connect with water pump;The utility model is using the above structure, mud in slope drainage pipe can be effectively cleared up, keeps its draining unobstructed, reduces groundwater level in side slope, be conducive to reduce groundwater pressure and because of the phenomenon that rock mechanical property caused by underground water reduces, enhance slope stability.In addition, the device have it is light portable, it is easy to operate, the advantages that highly effective.
Description
Technical field
The utility model relates to side slope maintenance prevention equipment technical field, specially a kind of slope drainage pipe dredging dress
It sets.
Background technique
In recent years, since the aggravation of mankind's activity and extreme natural weather situation, many slope instabilities cause huge
Economic loss and casualties event.Wherein, rainwater, underground water infiltrate, and river level rise is one for causing slope instability
Major reason.Currently used side slope protection technology has friction pile supporting, suspension roof support, drainage system etc..For most of sides
Slope, drainage system are highly effective and economical rationality administration ways.Many side slopes are also in the base using other administration ways
Drainage pipeline project construction is carried out on plinth.Surface water in side slope can be drained by building the modes such as gutter, for side
Underground water in slope is then needed using modes such as drainpipes with lowering of watertable.
However, the drainpipe in side slope is often blocked with reasons such as the postponements and construction of time, blocking draining
The substance of pipe is mainly the thinner mud of particle and clay, and water penetration is poor but fragile, and underground water cannot be smoothly from draining
Smooth discharge in pipe.Rainfall or surrounding underground water, which infiltrate, is lifted slope underground water position, and the soil body generates water pressure on the downside of side slope
To increase sliding force, also, underground water can have an impact the physico-mechanical properties of Rock And Soil, or even cause weak sliding
Face can cause extreme influence for the stability of side slope.
Currently, usually punching pipe laying again for the administration way for blocking drainpipe, that is, blocking slope drainage pipe
Position is punched with drilling machine again, and original drainpipe is destroyed completely, then buries drainpipe again again with punch position.This side
Method needs biggish manpower and economic cost, because other reasons are no longer administered, it is hidden even to generate biggish safety for some side slopes
Suffer from.In terms of existing desilting equipment and dredging method are also applicable only to the urban construction such as sewer, it is not involved with side slope
Drainpipe harnessing project.Therefore, a kind of economic and effective side slope Accrete clearing device is needed at present, to having blocked slope drainage pipe
Carrying out dredging improvement makes it play a role again.
Utility model content
In view of the deficienciess of the prior art, the purpose of the utility model is to provide a kind of slope drainage pipe dredging dresses
Set, have it is light portable, it is easy to operate, the advantages that highly effective, can effectively clear up mud in slope drainage pipe, make its draining
It is unobstructed, groundwater level in side slope is reduced, slope stability is enhanced.
To achieve the above object, the utility model provides the following technical solutions: a kind of slope drainage pipe dredging device, packet
Include drilling machine ontology, water pump and for providing the power supply of power to the drilling machine ontology and water pump, it is characterised in that: the brill
Machine ontology includes drilling machine components, sliceable drill rod assemblies and drill bit assembly, the drilling machine components by sliceable drill rod assemblies with
Drill bit assembly connection;The junction of the drilling machine components and sliceable drill rod assemblies is equipped with the first water inlet pipe, first water inlet
Pipe is connect with water pump;
The drilling machine components include drill motor, shaft and drilling machine connector, and the drill motor is by shaft and bores
The connection of machine connector;
The sliceable drill rod assemblies include drill rod body, the drilling rod nipple set on described drill rod body one end, and
Set on the drilling rod coupling of the drill rod body other end, the drill rod body passes through the drilling machine of drilling rod coupling and drilling machine components
Connector connection;
The drill bit assembly include drill bit, set on the chisel edge several cut native knife blade and with the brill
The bit adapter of head rear end connection, is equipped with several apopores close to the rear end of bit adapter on the drill bit side wall.
Further, described several are cut native knife blade and are made of hard alloy or diamond, it is described several
It cuts native knife blade to be arranged in tip-angled shape uniform intervals around drill bit circumferencial direction, described several cut native knife blade with drill bit
Slope inwardly setting centered on the center of circle, and several described tilt angles for cutting native knife blade differ.
Further, the drill bit is made of steel material.
Further, shape is evenly spaced on drill bit side wall several described apopores in a ring, and apopore
Diameter is 2mm.
Further, the bit adapter is screw thread bit adapter.
Further, the drill rod body is made of steel material, and the diameter of the drill rod body is 1cm, the brill
The length of club shaft is 0.5m-2m, uses and is threadedly coupled between the drilling rod coupling and drilling machine connector.
Further, the drilling machine components further include drilling machine handrail, and the drilling machine handrail is set to the rear end of drill motor.
Further, the power supply is electrically connected with the drill motor of drilling machine components and water pump respectively by electric wire.
Further, the power supply is generator or battery.
Further, the water pump is connect by the second water inlet pipe with water source.
In addition, a kind of slope drainage pipe dredging device provided by the utility model, wherein bit part cuts native knife knife
Piece is curved inwardly with different angle, can not only have been cut the different location soil body but also can have been prevented from destroying draining tube wall, due to difference
The drain pipe diameter being arranged at side slope or same side slope different location is not of uniform size, needs different-diameter drill bit.Therefore, this is practical
It is novel to can provide different-diameter drill bit to adapt to different tube diameters drainpipe, and drill bit connector diameter is consistent, may be applicable to same
A set of drilling rod.Wherein, the water hole being arranged on drill bit side wall can spray current scour tube wall and understand the silt remained on drainpipe
Mud, lesser bit diameter can make the water in water pump pressure have enough pressure to wash away tube wall and take away chopping mud.
Compared with existing device and method, provided by the present invention for drainpipe dredging device and method have it is as follows
Advantage:
1, drill bit side wall provided by the utility model is provided with water hole, and the pressure flow in drilling rod is through drill bit side wall through drainage hole
It sprays, the mud remained on draining pipeline can be cleared up, and as the rotation of drill bit and movement are constantly washed away.
2, drill bit provided by the utility model is cut native knife blade and is tilted with different angle to center, before deflection angle is the smallest
Stretch apart from longest, cut at first to the front soil body, outside fanned the air, in drilling rod water flow reach herein after flowed through along blade gap
Place, reaches tube wall and drill bit and drilling rod gap is formed into a loop.The blade of different angle can will not with the autobiography of drill bit and movement
Soil with orientation is smashed, and there are water loop out, water flow is flowed out with along the angle tilted down.
3, drill pipe diameter provided by the utility model is consistent, is differed with every section of 0.5m-2m, bit diameter is straight according to drainpipe
Diameter difference is exchanged, and the different-diameter drainpipe of different side slopes is applicable to.
4, the Accrete clearing device size of the utility model is smaller, and drill pipe diameter is sliceable, and drilling machine provides power for cutting mud,
Type is small, can integrally be packed into knapsack, and it is convenient to carry, easy to operate.
5, the Accrete clearing device of the utility model is compared compared to existing hole pipe laying mode of beating again, greatly reduces workload,
It avoids reusing large and medium-sized mechanical device, working efficiency can be improved, substantially reduce maintenance cost.
6, the Accrete clearing device of the utility model can be dredged in time to slope drainage pipe has been blocked, and restore drainability, drop
Low slope underground water position is conducive to the stability for improving side slope, reduces security risk.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model;
Fig. 2 is the structural schematic diagram of drill bit assembly in the utility model;
Fig. 3 is the sectional view of Fig. 2;
Fig. 4 is the structural schematic diagram of sliceable drill rod assemblies in the utility model;
Fig. 5 is the structural schematic diagram of drilling machine components in the utility model;
Fig. 6 is the structural schematic diagram of water pump in the utility model;
Fig. 7 is the structural schematic diagram of power supply in the utility model;
Fig. 8 is the embedding schematic diagram of side slope and drainpipe when the utility model is used.
In figure: 1 water pump, 2 power supplys, 3 drilling machine components, 3-1 drill motor, 3-2 shaft, 3-3 drilling machine connector, 3-4 drilling machine
Handrail, 4 sliceable drill rod assemblies, 4-1 drill rod body, 4-2 drilling rod nipple, the coupling of 4-3 drilling rod, 5 drill bit assemblies, 5-1 are bored
Head, 5-2 cut native knife blade, 5-3 bit adapter, 5-4 apopore, 6 first water inlet pipes, 7 electric wires, 8 second water inlet pipes, 9 water sources, 10
Side slope, 11 drainpipes.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-8 is please referred to, the utility model provides a kind of technical solution: a kind of slope drainage pipe dredging device, including
Drilling machine ontology, water pump 1 and for providing the power supply 2 of power to the drilling machine ontology and water pump 1, the drilling machine ontology includes
Drilling machine components 3, sliceable drill rod assemblies 4 and drill bit assembly 5, the drilling machine components 3 pass through sliceable drill rod assemblies 4 and drill bit group
Part 5 connects;The drilling machine components 3 and the junction of sliceable drill rod assemblies 4 are equipped with the first water inlet pipe 6, first water inlet pipe 6
It is connect with water pump 1;In the present embodiment, power is provided to sliceable drill rod assemblies 4 by drilling machine components 3 first, then by that can spell
The torque of stacks component 4 provides rotation drilling depth power to drill bit assembly 5, and the first water inlet pipe 6 intakes water inlet tube position backward
Tube cavity is closed at 10cm, and only bit part and the first water inlet pipe communicate with the outside world with the integral part of rod bit composition;
The pressure water that water pump 1 conveys reaches following bit locations and flows out the silt soil of chopping along the gap of drainpipe and drill bit, drilling rod,
Drill bit side wall water hole can spray remaining mud on current scour drainpipe, reach dredging purpose.
Wherein, the drilling machine components 3 include that drill motor 3-1, shaft 3-2 and drilling machine connector 3-3, the drilling machine are electronic
Machine 3-1 is connect by shaft 3-2 with drilling machine connector 3-3;In the present embodiment, drill motor 3-1 is used to provide power simultaneously edge
Shaft 3-2 communicates rotational motion to drilling machine connector 3-3, and following native knife blades of cutting is made to shred mud and continue drilling depth, pressure
Water enters sliceable drill rod assemblies 4 along the first water inlet pipe 6, is pumped into drill bit assembly 5, most of water flows through blade position, takes out of
Mud is shredded, drainpipe is flowed out in the gap between micro- drainpipe and drill bit and drilling rod tilted down;Small part is after drill bit
The water hole of edge sprays, and as draining inside pipe wall is washed away in the rotation of drill bit, clears up remaining mud.In addition, the drilling machine components 3 are also
Including drilling machine handrail 3-4, the drilling machine handrail 3-4 is set to the rear end of drill motor 3-1, the drilling machine entirety ruler of the Accrete clearing device
Very little smaller, worker can hold drilling machine handrail 3-4 independent operation.
The sliceable drill rod assemblies 4 include drill rod body 4-1, and the drilling rod set on the one end the drill rod body 4-1 is inscribed
Head 4-2, and pass through outside drilling rod set on drilling rod the coupling 4-3, the drill rod body 4-1 of the drill rod body 4-1 other end
Connector 4-3 is connect with the drilling machine connector 3-3 of drilling machine components 3;In the present embodiment, the drilling rod nipple 4-2 and different-diameter head
It can connect, drilling rod coupling 4-3 and other drilling rods splice and are finally connected on drilling machine components 3.
In addition, the drill rod body 4-1 is made of steel material, the diameter of the drill rod body 4-1 is 1cm, described
The length of drill rod body 4-1 is 0.5m-2m, uses and is threadedly coupled between the drilling rod coupling 4-3 and drilling machine connector 3-3, needle
For the drainpipe at different side slope positions, the cheap property and water-pipe blockage depth of the drilling work of consideration comprehensively consider selection
Splice different length drilling rod;The main function of drilling rod is to provide power as medium for drill bit, and drill bit is transmitted to when drilling
Mud block part and as water transport channel in water pipe.Take out and splice from knapsack when in use, according to drainpipe plug depth and
The splicing living of the cheap personality of operation.
The drill bit assembly 5 include drill bit 5-1, set on the front end the drill bit 5-1 several cut native knife blade 5-2, with
And the bit adapter 5-3 being connect with the rear end the drill bit 5-1, close to the rear end of bit adapter 5-3 on the drill bit 5-1 side wall
Equipped with several apopores 5-4;Wherein, described several are cut native knife blade 5-2 and are made of hard alloy or diamond,
In this way to guarantee the sustainable use of the blade, blade abrasion is prevented;It is between tip-angled shape is uniform that described several, which cut native knife blade 5-2,
It is arranged every around drill bit 5-1 circumferencial direction, it is inside centered on the center of circle of drill bit 5-1 that described several cut native knife blade 5-2
It is obliquely installed, and several described tilt angles for cutting native knife blade 5-2 differ, wherein its projection of tilt angle the maximum reaches
The side-walls of drill bit, tilt angle reckling is close to parallel with drill bit side wall, in drilling, at the smallest knife of tilt angle before
Stretch apart from longest, cut at first to the front soil body, outside fanned the air, in drilling rod water flow reach herein after flowed through along blade gap
Place, reaches tube wall and drill bit and drilling rod gap, is formed into a loop.Meanwhile autobiography and movement of the blade of different angle with drill bit
The soil of different direction can be smashed, and there are water loop out, water flow is flowed out with along the angle tilted down.
Specifically, the drill bit 5-1 is made of steel material, in actual use, the size of drill bit can be according to draining
Pipe size selection, diameter are about drain pipe diameter 2/3rds, and it is thorough by drainpipe mud to shake drilling machine in drilling
Chopping.
Specifically, shape is evenly spaced on drill bit 5-1 side wall several apopores 5-4 in a ring, and it is discharged
The diameter of hole 5-4 is 2mm, here more preferably at least 6 water holes, and side wall of the pressure flow through drill bit in drilling rod is through being somebody's turn to do
Apopore sprays, and can clear up the mud remained on draining pipeline, and as the rotation of drill bit and movement are constantly washed away.
Specifically, the bit adapter 5-3 is screw thread bit adapter, so that various sizes of drill bit can be used together
A set of connector.
Specifically, the power supply 2 is electrically connected with the drill motor 3-1 of drilling machine components 3 and water pump 1 respectively by electric wire 7
It connects;The power supply 2 is generator or electric power storage, and in the present embodiment, which provides power for drilling machine rotation and water pump water pumping,
In actual use, it is contemplated that the condition of field side slope preferably uses diesel-driven generator.
Specifically, the water pump 1 is connect by the second water inlet pipe 8 with water source 9, wherein water source can extract ditch by water pipe
Canal ponding or water storage of digging pit extraction etc., the main function at water source is that bit location in drainpipe is depressed by water pump, by drill bit
The chopping soil body is taken out of and uses current scour drainpipe side wall residual sludge;Water pump 1 is small portable water pump, is connected with drilling machine front
It connects, water source can be extracted and give pressure and will have the water of pressure to be transmitted in drilling rod, pressure water is full of drilling rod, because drill pipe diameter is only
For 1cm, water flow is very fast, reaches bit location by direct circulation mode, and the cutting different angle using pressure itself and flow velocity
The silt soil that native knife is smashed flows out around drill bit and drilling rod.It should be noted that since the drainpipe in side slope buries angle
Smaller, buried depth is about tens of rice to tens meters, therefore small pump is only needed to provide relatively small pressure, be enough by
Drill bit smashes mud and goes out bit location and flow out along drainpipe from drainpipe and drilling rod gap, reaches borehole cleaning purpose, this pressure
It will not cause the destruction of slope drainage pipe.
In addition, referring to Fig. 8, drainpipe 11 is embedded in side slope lower parts at different levels with 5-10 ° of angle of declination when slope controlling 10,
Effectively dredging drainpipe mud, guarantee drainage effect it can enhance slope stability.
When the utility model is used, it is to be blocked in slope drainage pipe by mud, after cannot effectively draining, this set facility is transported
Drill bit assembly is connect with drill rod assemblies then, is put into drainpipe first on deck by equipment to scene, will constantly be bored
Bar and drill bit go deep into drainpipe and continue jointed rod, and drilling rod is connected drilling machine after the position of drill bit reaches blocking region;With
Starting drilling machine rotates drill bit with drilling rod after water pump extracts water source and the water for having pressure is pumped into drilling rod, and then bit cutting is made to become silted up
Mud and shaking drilling machine cuts it sufficiently, then visible muddy water flow is mingled with mud and flows out from slope drainage nozzle.Such section is bored
Among bar all deeply drills, but dredging drainpipe not yet, drilling can be suspended, switched off the pump, after dismounting drilling rod and drilling machine part
After continuation jointed rod reaches designated length, connection drilling machine opens water pump and continues to creep into, until the silt in clear completely root drainpipe
Mud reaches dredging purpose.
For the utility model when carrying out drainpipe dredging, by taking a certain slope drainage pipe as an example, specifically used method is as follows:
1. the side slope of pair embedding drainpipe is checked, the drainpipe that may be blocked is found out.According to construction information, understanding will
The information such as caliber, buried depth, the form of construction work of dredging drainpipe investigate water source distribution on or near side slope.According to the above money
Material prepares bit size and quantity, prepares drilling rod model and length, prepares water source etc., carries out preliminary preparation.
2. site layout project instrument, pump power is in place, suitable dimension drill bit is connect with first segment drilling rod and along oblique upper
It is put into drainpipe, continues jointed rod during drill bit gos deep into drainpipe, such as reaches blocking position, in place conditions permit
In the case where access several meters of drilling rods again, connect drilling machine.
3. pressure water enters drilling rod after starting water pump, drilling machine is opened immediately, and rotation drilling rod starts to creep into dredging, bores in operation
One side drilling depth when machine, it is pico- on one side to shake drilling machine, the mud in water pipe is all shredded, then i.e. visible sewage is from drainpipe pipe
Mouth outflow.
4. drilling machine leading edge closes drilling machine and water pump when will reach drainpipe nozzle, temporarily when drilling rod and drill bit continue deeper into
Stop drilling machine, rig down and drilling rod junctions, continue to connect next section drilling rod, then connect drilling machine, start water pump and drilling machine after
Continuous drilling dredging, until drainpipe buried depth when drill bit reaches construction, stops drilling, this drainpipe dredging work is completed.
5. the device is placed at next blocking position of drain pipe, continues dredging according to the above operating procedure, such as drain
Pipe caliber change then needs to consider whether more bit change.
6. completing dredging, provision for disengagement.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of slope drainage pipe dredging device, including drilling machine ontology, water pump (1) and for the drilling machine ontology and
The power supply (2) of water pump (1) offer power, it is characterised in that: the drilling machine ontology includes drilling machine components (3), sliceable drilling rod group
Part (4) and drill bit assembly (5), the drilling machine components (3) are connect by sliceable drill rod assemblies (4) with drill bit assembly (5);It is described
The junction of drilling machine components (3) and sliceable drill rod assemblies (4) is equipped with the first water inlet pipe (6), first water inlet pipe (6) and water
Pump (1) connection;
The drilling machine components (3) include that drill motor (3-1), shaft (3-2) and drilling machine connector (3-3), the drilling machine are electronic
Machine (3-1) is connect by shaft (3-2) with drilling machine connector (3-3);
The sliceable drill rod assemblies (4) include drill rod body (4-1), are set in the drilling rod of the one end the drill rod body (4-1)
Connector (4-2), and it is set to the drilling rod coupling (4-3) of the drill rod body (4-1) other end, the drill rod body (4-1)
It is connect by drilling rod coupling (4-3) with the drilling machine connector (3-3) of drilling machine components (3);
The drill bit assembly (5) include drill bit (5-1), be set to the front end the drill bit (5-1) several cut native knife blade (5-
2) bit adapter (5-3) and with the rear end the drill bit (5-1) connecting, close to bit adapter on drill bit (5-1) side wall
The rear end of (5-3) is equipped with several apopores (5-4).
2. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: described several cut native knife
Blade (5-2) is made of hard alloy or diamond, and it is between tip-angled shape is uniform that described several, which cut native knife blade (5-2),
It is arranged every around drill bit (5-1) circumferencial direction, described several are cut during native knife blade (5-2) with the center of circle of drill bit (5-1) is
The heart, which slopes inwardly, to be arranged, and several described tilt angles for cutting native knife blade (5-2) differ.
3. a kind of slope drainage pipe dredging device according to claim 2, it is characterised in that: the drill bit (5-1) is adopted
It is made of steel material.
4. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: several described apopores
(5-4) shape is evenly spaced on drill bit (5-1) side wall in a ring, and the diameter of apopore (5-4) is 2mm.
5. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: the bit adapter (5-
It 3) is screw thread bit adapter.
6. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: the drill rod body (4-
1) it is made of steel material, the diameter of the drill rod body (4-1) is 1cm, and the length of the drill rod body (4-1) is
0.5m-2m is used between the drilling rod coupling (4-3) and drilling machine connector (3-3) and is threadedly coupled.
7. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: the drilling machine components (3)
It further include drilling machine handrail (3-4), the drilling machine handrail (3-4) is set to the rear end of drill motor (3-1).
8. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: the power supply (2) passes through
Electric wire (7) is electrically connected with the drill motor (3-1) of drilling machine components (3) and water pump (1) respectively.
9. a kind of slope drainage pipe dredging device according to claim 2, it is characterised in that: the power supply (2) is hair
Motor or battery.
10. a kind of slope drainage pipe dredging device according to claim 1, it is characterised in that: the water pump (1) passes through
Second water inlet pipe (8) is connect with water source (9).
Priority Applications (1)
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CN201820873463.2U CN208346799U (en) | 2018-06-06 | 2018-06-06 | A kind of slope drainage pipe dredging device |
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Application Number | Priority Date | Filing Date | Title |
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CN201820873463.2U CN208346799U (en) | 2018-06-06 | 2018-06-06 | A kind of slope drainage pipe dredging device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110847339A (en) * | 2019-11-26 | 2020-02-28 | 中铁十八局集团建筑安装工程有限公司 | Directional dredging device for drainage pipeline |
CN110924515A (en) * | 2019-11-07 | 2020-03-27 | 中国地质大学(武汉) | Drainage pipeline dredging device adopting horizontal directional drill |
-
2018
- 2018-06-06 CN CN201820873463.2U patent/CN208346799U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110924515A (en) * | 2019-11-07 | 2020-03-27 | 中国地质大学(武汉) | Drainage pipeline dredging device adopting horizontal directional drill |
CN110847339A (en) * | 2019-11-26 | 2020-02-28 | 中铁十八局集团建筑安装工程有限公司 | Directional dredging device for drainage pipeline |
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Address after: 518027 No. 1043 Shangbu Middle Road, Futian District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Survey and Mapping Institute (Group) Co., Ltd. Address before: 518031 Shenzhen Exploration Building 517, 1043 Shangbuzhong Road, Futian District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Geotechnical Investigation & Surveying Institute Co., Ltd. |
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