CN204609769U - Long auger expands end the complete sets of equipment - Google Patents
Long auger expands end the complete sets of equipment Download PDFInfo
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- CN204609769U CN204609769U CN201520293650.XU CN201520293650U CN204609769U CN 204609769 U CN204609769 U CN 204609769U CN 201520293650 U CN201520293650 U CN 201520293650U CN 204609769 U CN204609769 U CN 204609769U
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- oil cylinder
- bearing
- drilling rod
- otic placode
- cutter
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Abstract
Long auger expands end the complete sets of equipment, comprise filling concrete swivel coupling, hydraulic oil cylinder driving support, unit head, the excessive joint of drilling rod, inner catheter, external spiral drilling rod, expand knife system, drill bit, hydraulic system, described filling concrete swivel coupling comprises bend pipe, core pipe, bearing gland, bearing, ectosome, round nut, oil sealing, lining ring, described bend pipe and core pipe integrally welded, core pipe and ectosome are by bearing gland, bearing, round nut and lining ring are dynamically connected, oil sealing seals bearing bore, two upper end otic placodes of core pipe are connected with bolt with between the balladeur train otic placode of hydraulic oil cylinder driving support, be fixedly connected with bolt between ectosome and the inner core of unit head and turn round with inner core.
Description
Technical field
the present invention relates to piling machinery technical field, particularly relate to a kind of long auger and expand end the complete sets of equipment.
Background technology
long auger expands basic skill or training's method and has applied for many years, and it not only can increase the end carrying lotus of stake, and also can realize the resistance to plucking function of stake, reducing the foundation cost of stake, is very valuable a kind of pile foundation form.Expand end device with regard to the existing long auger in current domestic stake work market, problem exists a lot, and operating efficiency is lower, and pile quality is unsatisfactory, and synthtic price index is as follows:
the driving mechanism work of expanding cutter is unreliable, if any by the gravity of drilling tool, expansion cutter is opened, expansion cutter pulls open by the lead that utilizes also had, the withdrawal of expanding cutter helps regain by the deadweight of expansion cutter and hole wall substantially, the reaming size expanding cutter cannot be protected, expand cutter withdrawal and cannot receive position because filling in soil, problem exists a lot, and is difficult to solve.The upper end that some fluid pressure drive devices will drive oil cylinder to be arranged on drill bit, owing to taking defeated native space, easily make the soil body block, making to cut soil cannot carry out.What have does not arrange blade by expansion cutter section, and vestibule loosened soil is not easy cleaning.Expand knife structure poor rigidity, easily deform and displacement, cutting ability is deteriorated.What also have separates reaming and drilling operating, although can quality assurance, affect speed of application and construction cost, cause the inconvenience in construction, result of use be undesirable.
Summary of the invention
the present invention is directed to prior art above shortcomings, provide a kind of long auger that can adjust stake holes diameter to expand end the complete sets of equipment.
the object of the invention is to be achieved through the following technical solutions:
a kind of long auger expands end the complete sets of equipment, comprise filling concrete swivel coupling, hydraulic oil cylinder driving support, unit head, the excessive joint of drilling rod, inner catheter, external spiral drilling rod, expand knife system, drill bit, hydraulic system, described filling concrete swivel coupling comprises bend pipe, core pipe, bearing gland, bearing, ectosome, round nut, oil sealing, lining ring, described bend pipe and core pipe integrally welded, core pipe and ectosome are by bearing gland, bearing, round nut and lining ring are dynamically connected, oil sealing seals bearing bore, two upper end otic placodes of core pipe are connected with bolt with between the balladeur train otic placode of hydraulic oil cylinder driving support, be fixedly connected with bolt between ectosome and the inner core of unit head and turn round with inner core.
described expansion knife system comprises outer drilling rod body, expands cutter otic placode, expands cutter bearing pin, expands cutter, interior driving conduit, arc cushion block, pitman pin, connecting rod and mobile support saddle, outer drilling rod body and blade all have guide groove, expanding cutter otic placode is welded on outer drilling rod body, be connected expanding cutter otic placode with the upper end hole expanding cutter by expanding cutter bearing pin, interior driving conduit is welded with mobile support saddle, mobile support saddle is connected with the lower stomidium pitman pin of connecting rod, and the upper end hole of connecting rod is used with the interstitial hole expanding cutter and expanded pinned connection in cutter.
described unit head comprises motor, planetary reducer, headstock, junction plate, slide, suspension bracket, described planetary reducer one end is connected with motor, the described planetary reducer other end is connected with headstock, the lower surface of described junction plate is connected with headstock, the upper surface of described junction plate is connected with suspension bracket, described slide is connected with junction plate, described planetary reducer one end is provided with pinion, bull gear and hollow shaft wheel hub is provided with in described headstock, described bull gear is fixedly connected with hollow shaft wheel hub, described pinion engagement bull gear, taper roll bearing is provided with between the two ends of described hollow shaft wheel hub and headstock, the upper end of described taper roll bearing is fixed with bearing gland, described suspension bracket arranges the collar and suspension bracket body, the collar and suspension bracket body pinned connection, suspension bracket and headstock pinned connection, motor is arranged with 2, hollow shaft wheel hub inner sleeve has inner core, described inner core upper end is fixedly connected with the ectosome of filling concrete swivel coupling, described inner core lower end is connected with inner catheter, the inner core of unit head is free to slide and rotates in unit head hollow shaft wheel hub.
the excessive joint top of described drilling rod connects hollow shaft wheel hub output, the excessive joint bottom of described drilling rod connects external spiral drilling rod, described inner catheter is the connector of filling concrete swivel coupling and the interior driving conduit expanding knife system, and external spiral drill pipe bore has inner catheter.
described hydraulic oil cylinder driving support comprises fixed support, oil cylinder and balladeur train, described balladeur train has balladeur train otic placode, fixed support connects balladeur train by oil cylinder, fixed support is bolted on the installed surface of unit head end face, balladeur train slides along fixed support, the cylinder body earrings of described oil cylinder and fixed support hinged, the piston rod earrings of oil cylinder and balladeur train hinged, described hydraulic oil cylinder driving support symmetry has 2.
described drill bit comprises bit body, bores tooth and apex point, wherein bit body is made up of protruded tube, flange, big leaf's slice, vanelets, auris dextra plate, otic placode bearing pin and left otic placode, there is on the left of bit body left otic placode, have auris dextra plate on the right side of bit body, big leaf's slice is welded with brill tooth, vanelets is also welded with brill tooth, there is a pin-and-hole side of apex point, the auris dextra plate otic placode pinned connection of apex point and bit body, after apex point is combined with bit body, apex point opposite side inserts in the middle of the left otic placode of bit body.
described hydraulic system comprises fuel tank, hydraulic pump group, control valve and pipeline, and described fuel tank is by pipeline connecting fluid press pump group, and described hydraulic pump group connects oil cylinder, and described pipeline is provided with control valve.
beneficial effect of the present invention:
1. melt boring, the expansion end, defeated soil and perfusion pile to be integrated, have very high operating efficiency.
reaming and the speed of returning sword can be transferred to optimum state.
the pushing action expanding cutter motion is reliable, and arrival rate is high, and reaming quality is good.
the structural rigidity expanding cutter mechanism is good, under cutting resistance effect, can ensure constant
shape and not being subjected to displacement, can ensure carrying out smoothly of ream operation.
have hole function clearly, loosened soil amount remaining at the bottom of hole is few, and the settling amount of stake is little.
Accompanying drawing explanation
fig. 1 is this long auger expansion end the complete sets of equipment structural representation.
fig. 2 is this long auger expansion end the complete sets of equipment side structure schematic diagram.
fig. 3 is this filling concrete swivel coupling structural representation.
fig. 4 is hydraulic oil cylinder driving supporting structure schematic diagram of the present invention.
fig. 5 is hydraulic oil cylinder driving side face structural representation of the present invention.
fig. 6 is power head structure schematic diagram of the present invention.
fig. 7 is unit head side structure schematic diagram of the present invention.
fig. 8 is expansion knife system structural representation of the present invention.
fig. 9 is drill bit structure schematic diagram of the present invention
figure 10 is drill bit side structure schematic diagram of the present invention.
Detailed description of the invention
according to drawings and embodiments the present invention is described in further detail below:
a kind of long auger expands end the complete sets of equipment, comprises filling concrete swivel coupling 1, hydraulic oil cylinder driving support 2, unit head 3, the excessive joint 4 of drilling rod, inner catheter 5, external spiral drilling rod 6, expands knife system 7, drill bit 8, hydraulic system.Described filling concrete swivel coupling 1 comprises bend pipe 10, core pipe 11, bearing gland 12, bearing 13, ectosome 14, round nut 15, oil sealing 16, lining ring 17, described bend pipe 10 is integrally welded with core pipe 11, core pipe and ectosome 14 are by bearing gland 12, bearing 13, round nut 15 and lining ring are dynamically connected, oil sealing 16 pairs of bearing bores seal, lining ring 17 is for the rotatory sealing between ectosome 14 and core pipe 11, two upper end otic placode 11-1 of core pipe 11 are connected with bolt with between the balladeur train otic placode 20-1 of hydraulic oil cylinder driving support 2, when oil cylinder axial displacement, filling concrete swivel coupling is action thereupon also, be fixedly connected with bolt between ectosome 14 and the inner core of unit head 3 and turn round with inner core.
described hydraulic oil cylinder driving support 2 comprises fixed support 18, oil cylinder 19 and balladeur train 20, described balladeur train has balladeur train otic placode 20-1, fixed support connects balladeur train 20 by oil cylinder 19, fixed support is bolted on the installed surface of unit head 3 end face, balladeur train 20 slides along fixed support 18, balladeur train 20 can slide up and down on fixed support 18, cylinder body earrings 19-1 and the fixed support of described oil cylinder 19 are hinged, piston rod earrings 19-2 and the balladeur train 20 of oil cylinder 19 are hinged, described hydraulic oil cylinder driving support 2 symmetry has 2, 2 oil cylinders adopt the oil circuit that floats in parallel to connect, 2 oil cylinders are floating connection in parallel with the connection of oil pipe, well can control the reaming action of expanding cutter.
described unit head 3 comprises motor 3-1, planetary reducer 3-2, headstock 3-3, junction plate 3-4, slide and suspension bracket 3-5, described planetary reducer 3-2 one end is connected with motor, the described planetary reducer other end is connected with headstock, the lower surface of described junction plate is connected with headstock, the upper surface of described junction plate is connected with suspension bracket, described slide is connected with junction plate, described planetary reducer one end is provided with pinion 3-7, bull gear 3-8 and hollow shaft wheel hub 3-9 is provided with in described headstock, described bull gear is fixedly connected with hollow shaft wheel hub, described pinion engagement bull gear, taper roll bearing 3-10 is provided with between the two ends of described hollow shaft wheel hub and headstock, the upper end of described taper roll bearing is fixed with bearing gland, described suspension bracket arranges the collar and suspension bracket body, the collar and suspension bracket body pinned connection, suspension bracket and headstock pinned connection, motor 3-1 is arranged with 2, hollow shaft wheel hub inner sleeve has inner core, described inner core upper end is fixedly connected with the ectosome 14 of filling concrete swivel coupling 1, described inner core lower end is connected with inner catheter 5, the inner core of unit head is free to slide and rotates in unit head hollow shaft wheel hub, the inner core of unit head and the synchronous revolving of outer drilling rod control by expanding knife system 7.
the excessive joint of described drilling rod 4 is that the hollow shaft wheel hub output of unit head 3 is connected with the excessive of external spiral drilling rod 6, described drilling rod excessive joint 4 top connects hollow shaft wheel hub output, described drilling rod excessive joint 4 bottom connects external spiral drilling rod 6, and the external spiral drilling rod 6 that the excessive joint of replacing drilling rod can realize different-diameter is connected with the excessive of unit head output.
described inner catheter 5 is filling concrete swivel coupling 1 and the connector of the interior driving conduit 25 of expansion knife system 7, the action of oil cylinder can be passed to interior driving conduit, then controls to expand opening and drawing in of cutter by connecting rod.Inner catheter fluid concrete pile can be passed through again, often save inner catheter length isometric with corresponding external spiral drilling rod, often the connection saved between inner catheter 5 is screw fastening type structure, by in rectangular teeth in the outer rectangular teeth insertion female joint end of public access head end, relative rotation angle, rectangular teeth being alignd, can be fixed with stop arc cushion block again to reinforce.
be that dental inlay tooth flange form connects between described external spiral drilling rod 6, by dental inlay tooth transmitting torque between flange, external spiral drill pipe bore has inner catheter 5.
described expansion knife system 7 comprises outer drilling rod body 21, expand cutter otic placode 22, expand cutter bearing pin 23, expand cutter 24, interior driving conduit 25, arc cushion block 26, pitman pin 27, connecting rod 28 and mobile support saddle 29, outer drilling rod body and blade all have guide groove 21-1, for guiding when expansion cutter and link motion and support, lower flange 21-2 has technology groove, expanding cutter otic placode 22 is welded on outer drilling rod body 21, be connected expanding cutter otic placode 22 with the upper end hole 24-1 expanding cutter by expanding cutter bearing pin 23, expand cutter 24 to be connected with connecting rod 28, prevent from axially scurrying out, interior driving conduit 25 is welded with mobile support saddle 29, mobile support saddle 29 is connected with the lower stomidium 28-1 pitman pin 27 of connecting rod, insert together with the technology groove of interior driving conduit from outer drilling rod body lower flange after connection, pitman pin places restrictions on axial float by drilling rod body guide groove, afterwards, the upper end hole 28-2 of connecting rod is connected with expanding bearing pin 23-1 in cutter with the interstitial hole expanding cutter, the not outstanding connecting rod of bearing pin in cutter is expanded after connecting, with junction of the edges of two sheets of paper screw, bearing pin and connecting rod in expansion cutter are fixed, make it can be free to slide in blade guide groove.Arc cushion block is that the gap of filling between outer drilling rod body 21 and interior driving conduit is used.
described drill bit 8 comprises bit body 30, bore tooth 31 and apex point 32, wherein bit body 30 is by protruded tube 33, flange 34, big leaf's slice 35, vanelets 36, auris dextra plate 37, otic placode bearing pin 38 and left otic placode 39 form, there is on the left of bit body 30 left otic placode 39, there is on the right side of bit body 30 auris dextra plate 37, protruded tube 33 is used for filling the gap between outer drilling rod body 21 and interior driving conduit 25, together with arc cushion block 26, outer drilling rod body core pipe guide groove is made to be formed closed, prevent soil bits from entering in body, flange 34 is used for being connected with outer drilling rod body 21, big leaf's slice is primary blades, big leaf's slice is welded with and bores tooth 31, be mainly used to bore soil and defeated soil, vanelets is the cutting body of big leaf's slice, vanelets is also welded with and bores tooth 31, but be only used for cutting soil, be not used for defeated soil, soil is not filled in order to make blade space, make blade volume reduce as far as possible, there is a pin-and-hole side of apex point 32, apex point 32 is connected with otic placode bearing pin 38 with the auris dextra plate 37 of bit body, after apex point is combined with bit body, apex point opposite side inserts in the middle of the left otic placode 39 of bit body, during bore operation, apex point plays centering and the effect of closed bit body endoporus, during concrete perfusion operation, apex point is automatically opened under concrete gravity and Gravitative Loads, concrete is injected in stake holes by guide pipe inner hole.
described hydraulic system comprises fuel tank, hydraulic pump group, control valve and pipeline, described fuel tank is by pipeline connecting fluid press pump group, described hydraulic pump group connects oil cylinder 19, described pipeline is provided with control valve, described hydraulic oil container can be used, and hydraulic pump group can select the gear pump of small displacement according to the movement velocity expanding cutter, and control valve can select solenoid operated directional valve to add throttling adjustment, be convenient to use button control
a kind of expanding method, comprises the following steps:
the first step starts unit head and drives drilling tool to bore stake holes, and after reaching the degree of depth, control hydraulic system is to oil cylinder fuel feeding, and hydraulic oil cylinder driving support drives on inner catheter and moves, and is strutted by expansion cutter by connecting rod;
second step expands cutter and does reaming campaign, and the loosened soil of vestibule is upwards with by external spiral drilling rod, and sideband moves limit rotation conveying;
after 3rd step reaming completes, in hydraulic oil cylinder driving support drives, pipe moves down, and expansion cutter is withdrawn into original position, and reaming terminates.
the installation of hydraulic oil cylinder driving support: upper mounting plane hydraulic oil cylinder driving support 2 being fixed by bolts to unit head 3, then carry out pipeline connection, two oil cylinders adopt the oil circuit that floats in parallel to connect, after connection, want the action of test oil cylinder and the gas of draining in pipeline, then oil cylinder is retracted into extreme lower position.The installation of filling concrete swivel coupling and the excessive joint of drilling rod: filling concrete swivel coupling is fixedly connected with the inner core bolt of unit head 3, insert in unit head hollow shaft wheel hub together with inner core, two upper end otic placode 11-1 of core pipe 11 are connected with bolt with between the balladeur train otic placode 20-1 of hydraulic oil cylinder driving support 2, again excessive for drilling rod joint 4 is connected with the hollow shaft wheel hub output bolt of unit head 3, after connecting, drilling rod anchor tip will be exposed, to carry out next step connection in inner core lower end.
the connection of inner catheter 5 and external spiral drilling rod 6: inner catheter 5 and the external spiral drilling rod 6 of equal length are set in together, notice that upper and lower link wants consistent, first inner catheter pull-out is connected with the inner core lower end of unit head, jointing is mouth rotating type, insert in the square profile of tooth female joint of inner catheter 5 upper end by end moment profile of tooth male joint under the inner core of unit head 3, rotate an angle, time male and female rectangular teeth align, insert a curved baffle at the dead slot place of rectangular teeth and be screwed, inner catheter has connected.External spiral drilling rod is that flange form bolt connects, by dental inlay tooth transmitting torque between flange.Connecting of following joint is completed with same method.Expand the interior driving conduit 25 of knife system 7 the same with the method for attachment of the connection of inner catheter 5 and outer drilling rod body 21 and external spiral drilling rod 6.For flange form is connected between drill bit 8 with expansion knife system 7, be bolted.
operating principle of the present invention is: first, starts unit head and drives drilling tool to bore stake holes, and after reaching the degree of depth, control hydraulic system is to oil cylinder fuel feeding, and hydraulic oil cylinder driving support drives on inner catheter and moves, and is strutted by expansion cutter by connecting rod.After reaming completes, control hydraulic system makes interior pipe move down, and expansion cutter is withdrawn into original position.The loosened soil of vestibule upwards can be with by auger stem, and sideband moves limit rotation conveying, and if desired, can carry out several times please be native, to ensure the quality of stake.Construct time, conveniently construct, expand cutter open and withdrawal speed is controlled by one-way throttle valve.Preferably also its movement locus can be shown on the touchscreen by automatically controlled network system and sensor by the reaming campaign of expanding cutter.Utilize the motion of Sensor monitoring oil cylinder, so as to describing the reaming motion state expanding cutter, and by electrically controlled monitoring network system by the display of its image on the touchscreen, operator is according to the image on screen, can judge whether counter bore diameter puts in place, and whether quality reaches requirement.
Claims (7)
1. a long auger expands end the complete sets of equipment, it is characterized in that: comprise filling concrete swivel coupling, hydraulic oil cylinder driving support, unit head, the excessive joint of drilling rod, inner catheter, external spiral drilling rod, expand knife system, drill bit, hydraulic system, described filling concrete swivel coupling comprises bend pipe, core pipe, bearing gland, bearing, ectosome, round nut, oil sealing, lining ring, described bend pipe and core pipe integrally welded, core pipe and ectosome are by bearing gland, bearing, round nut and lining ring are dynamically connected, oil sealing seals bearing bore, two upper end otic placodes of core pipe are connected with bolt with between the balladeur train otic placode of hydraulic oil cylinder driving support, be fixedly connected with bolt between ectosome and the inner core of unit head and turn round with inner core.
2. long auger according to claim 1 expands end the complete sets of equipment, it is characterized in that: described expansion knife system comprises outer drilling rod body, expand cutter otic placode, expand cutter bearing pin, expand cutter, interior driving conduit, arc cushion block, pitman pin, connecting rod and mobile support saddle, outer drilling rod body and blade all have guide groove, expanding cutter otic placode is welded on outer drilling rod body, be connected expanding cutter otic placode with the upper end hole expanding cutter by expanding cutter bearing pin, interior driving conduit is welded with mobile support saddle, mobile support saddle is connected with the lower stomidium pitman pin of connecting rod, the upper end hole of connecting rod is used with the interstitial hole expanding cutter and is expanded pinned connection in cutter.
3. long auger according to claim 2 expands end the complete sets of equipment, it is characterized in that: described unit head comprises motor, planetary reducer, headstock, junction plate, slide, suspension bracket, described planetary reducer one end is connected with motor, the described planetary reducer other end is connected with headstock, the lower surface of described junction plate is connected with headstock, the upper surface of described junction plate is connected with suspension bracket, described slide is connected with junction plate, described planetary reducer one end is provided with pinion, bull gear and hollow shaft wheel hub is provided with in described headstock, described bull gear is fixedly connected with hollow shaft wheel hub, described pinion engagement bull gear, taper roll bearing is provided with between the two ends of described hollow shaft wheel hub and headstock, the upper end of described taper roll bearing is fixed with bearing gland, described suspension bracket arranges the collar and suspension bracket body, the collar and suspension bracket body pinned connection, suspension bracket and headstock pinned connection, motor is arranged with 2, hollow shaft wheel hub inner sleeve has inner core, described inner core upper end is fixedly connected with the ectosome of filling concrete swivel coupling, described inner core lower end is connected with inner catheter, the inner core of unit head is free to slide and rotates in unit head hollow shaft wheel hub.
4. long auger according to claim 2 expands end the complete sets of equipment, it is characterized in that:
The excessive joint top of described drilling rod connects hollow shaft wheel hub output, the excessive joint bottom of described drilling rod connects external spiral drilling rod, described inner catheter is the connector of filling concrete swivel coupling and the interior driving conduit expanding knife system, and external spiral drill pipe bore has inner catheter.
5. long auger according to claim 1 expands end the complete sets of equipment, it is characterized in that: described hydraulic oil cylinder driving support comprises fixed support, oil cylinder and balladeur train, described balladeur train has balladeur train otic placode, fixed support connects balladeur train by oil cylinder, fixed support is bolted on the installed surface of unit head end face, and balladeur train slides along fixed support, the cylinder body earrings of described oil cylinder and fixed support hinged, the piston rod earrings of oil cylinder and balladeur train hinged, described hydraulic oil cylinder driving support symmetry has 2.
6. long auger according to claim 1 expands end the complete sets of equipment, it is characterized in that: described drill bit comprises bit body, bores tooth and apex point, wherein bit body is made up of protruded tube, flange, big leaf's slice, vanelets, auris dextra plate, otic placode bearing pin and left otic placode, there is on the left of bit body left otic placode, there is on the right side of bit body auris dextra plate, big leaf's slice is welded with brill tooth, vanelets is also welded with brill tooth, there is a pin-and-hole side of apex point, the auris dextra plate otic placode pinned connection of apex point and bit body, after apex point is combined with bit body, apex point opposite side inserts in the middle of the left otic placode of bit body.
7. long auger according to claim 6 expands end the complete sets of equipment, it is characterized in that: described hydraulic system comprises fuel tank, hydraulic pump group, control valve and pipeline, described fuel tank is by pipeline connecting fluid press pump group, and described hydraulic pump group connects oil cylinder, and described pipeline is provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520293650.XU CN204609769U (en) | 2015-05-08 | 2015-05-08 | Long auger expands end the complete sets of equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520293650.XU CN204609769U (en) | 2015-05-08 | 2015-05-08 | Long auger expands end the complete sets of equipment |
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| Publication Number | Publication Date |
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| CN204609769U true CN204609769U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520293650.XU Expired - Fee Related CN204609769U (en) | 2015-05-08 | 2015-05-08 | Long auger expands end the complete sets of equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832094A (en) * | 2015-05-08 | 2015-08-12 | 黑龙江中古建筑节能科技股份有限公司 | Long auger drilling and base-expanding complete device and reaming method |
| CN109779525A (en) * | 2019-03-15 | 2019-05-21 | 山东瑞源钾盐工程技术股份有限公司 | Major diameter self- steering horizontal drill |
-
2015
- 2015-05-08 CN CN201520293650.XU patent/CN204609769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832094A (en) * | 2015-05-08 | 2015-08-12 | 黑龙江中古建筑节能科技股份有限公司 | Long auger drilling and base-expanding complete device and reaming method |
| CN104832094B (en) * | 2015-05-08 | 2017-12-01 | 黑龙江中古建筑节能科技股份有限公司 | Long auger base expanding and base expanding complexes and expanding method |
| CN109779525A (en) * | 2019-03-15 | 2019-05-21 | 山东瑞源钾盐工程技术股份有限公司 | Major diameter self- steering horizontal drill |
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Granted publication date: 20150902 Termination date: 20160508 |