CN203978290U - A kind of earth auger arc double-pole drill bit - Google Patents
A kind of earth auger arc double-pole drill bit Download PDFInfo
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- CN203978290U CN203978290U CN201420471554.5U CN201420471554U CN203978290U CN 203978290 U CN203978290 U CN 203978290U CN 201420471554 U CN201420471554 U CN 201420471554U CN 203978290 U CN203978290 U CN 203978290U
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- pole
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Abstract
A kind of earth auger arc double-pole drill bit, its structure has two large features: one is two, and to dig cave blade be cambered blade wide outside and narrow inside, and blade outer is widened, and greatly improves the wear-resisting utilization rate of blade; The 2nd, arc double-pole apex point forms dismountable being threaded with seamless steel pipe drilling rod, in the time needing to renew after blade abrasion, can retain native helical runner and seamless steel pipe drilling rod like this, thereby saves drill bit cost depletions.The design is rational in infrastructure, just can realize blade utilization rate and improve more than 20 times, saves hole digger drill head use cost more than 50%, has very high application and promotional value.
Description
Technical field
The utility model belongs to afforestation tillage machinery, relates to a kind of earth auger arc double-pole drill bit.
Background technology
At present China's forest culture and management is produced and is generally adopted tradition " slash-and-burn cultivation " one hoe, and chopper, is afforested fiery " refining mountain ".Along with factors such as scientific progress, Social Ecology demand and forest culture and management labour are in short supply, silviculture mechanization has started to lay out agenda, extensively launches.Existing forest land, forest culture and management tillage machinery aspect brush cutter, earth auger etc.Forest land earth auger has stretcher type earth auger, Contiuum type earth auger, backpack earth auger, these earth augers show in forest culture and management production practices through us: blade abrasion is fast, application life is short, some uses one day will allowing blade replacement, after the wearing and tearing of some fixed blades, whole drill bit all will be changed etc., these many difficult problems, need solve as early as possible.
Summary of the invention
The purpose of this utility model be design a kind of have durable dig cave blade and in the time that blade abrasion need to be changed, the novel hole digger drill head of nonabradable native helical runner and seamless steel pipe drilling rod be can retain, thereby the overall service efficiency that improves earth auger and the effect that reduces use cost reached.
The utility model is achieved through the following technical solutions:
A kind of earth auger arc double-pole drill bit, formed by arc double-pole apex point and seamless steel pipe drilling rod, arc double-pole apex point comprises spiral positioning apex point, arc double blade and apex point screw thread round steel, wherein: arc double blade is to intersect two of certain angle with level to dig cave blade and make cambered blade wide outside and narrow inside, and arc double blade and spiral positioning apex point weld and be fused into one; It is apex point screw thread round steel in the upper end of spiral positioning apex point; In seamless steel pipe drilling rod lower end, there is the drilling rod internal thread spinning mutually with apex point screw thread round steel; Seamless steel pipe drilling rod upper end is connected with earth auger power output steel axle.
The utility model, owing to having developed cambered blade wide outside and narrow inside, widens blade outer arc, greatly improves the wear-resisting utilization rate of blade; And arc double blade and spiral positioning apex point and apex point screw thread round steel merge welding and join together, and spin and form dismountable being threaded with seamless steel pipe drilling rod lower end, like this in the time needing to renew after blade abrasion, can retain native helical runner and seamless steel pipe drilling rod, thereby save drill bit cost depletions.The design is rational in infrastructure, effectively improves the durability of drill bit, and the unnecessary waste having brought while also having avoided because of allowing blade replacement more, so the design has very high application and promotional value.
Brief description of the drawings
Fig. 1 arc double-pole apex point diagram
Fig. 2 is Fig. 1 top view
Fig. 3 is the design's drill bit structure figure
Wherein: 1 spiral positioning apex point 2 arc double blade 3 apex point screw thread round steel 4 drilling rod internal threads
The native helical blade 7 power output couplings of 56, seamless steel pipe drilling rod
8 cottor pin 9 fixed drill bit bearing pins
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further elaborated.
With reference to Fig. 1,2, arc double-pole apex point is made up of spiral positioning apex point 1, apex point screw thread round steel 3 and lonely shape double blade 2, the upper end of apex point screw thread round steel 3 in spiral positioning apex point 1; It is cambered blade wide outside and narrow inside that two of lonely shape double blade 2 dig cave blade, and two blades and level intersect certain angle and weld and be fused into one with spiral positioning apex point 1 and drill bit screw thread round steel.(the two blades angle crossing with level can be according to traditional earth auger blade setting angle.)
Put forth effort maximum because dig cave blade by the position of cave round edge, cut the earth apart from the longest, wear and tear the fastest, more allowing blade replacement of some operations one day.Now blade is made into similarly to spherical cavity shape, accounts for the cambered blade of circumference certain length, widened like this outer arc width of blade, greatly improve blade anti-wear performance, extended the application life of blade; Due to blade from the center of circle part close to more put forth effort littlely, cut the earth apart from shorter, wear and tear less, blade inwardly does gradually narrow and forms cambered blade wide outside and narrow inside for this reason.This blade abrasive resistance can improve more than 10 times, adds that its tear resistance of symmetric double blade can improve more than 20 times.
With reference to Fig. 3, a kind of earth auger arc double-pole drill bit, formed by arc double-pole apex point and seamless steel pipe drilling rod 5, in seamless steel pipe drilling rod 5 lower ends, there is the drilling rod internal thread 4 matched with the screw thread of apex point screw thread round steel 3, make arc double-pole apex point (comprise spiral positioning apex point 1, apex point screw thread round steel 3 and lonely shape double blade 2) realize and being dismountablely connected with the drilling rod internal thread 4 of the contrary locking of drill bit shoveling direction of rotation with seamless steel pipe drilling rod 5, the rotation of cutting the earth like this makes to connect tighter, like this in the time of lonely shape double blade 2 and the 1 wearing and tearing need replacing of spiral positioning apex point, just disassembling, assembling and replacing herein, with regard to being unlikely, nonabradable seamless steel pipe drilling rod 5 is caused to waste with rising a native helical runner 6 also to be changed, thereby save drill bit cost depletions.Seamless steel pipe drilling rod 5 upper ends and earth auger power output coupling 7 socket-connect fixing (realized and being fixed by socket with cottor pin 8 by fixed drill bit bearing pin 9, this is earth auger tradition routine techniques, does not repeat them here).
The design's drill bit can be assemblied on the earth auger of " multifunctional afforestation machine of working soil " can dig cave, due to the power discharge capacity (cm of " multifunctional afforestation machine of working soil "
3)>=49, power (kw/6800r/min)>=1.2, has enough power capacities to drive the design's drill bit to dig cave operation.When after earth auger starting, the hand steered earth auger handle of operator, while being drilled into certain depth under spiral positioning apex point 1 location, lonely shape double blade 2 starts to contact soil, at this moment opens the throttle gradually, drill bit is accelerated rotation and lower brill shoveling automatically gradually, the mud soil having dug rotates through playing native helical blade 6 the cave surrounding stacking of dishing out, and while digging to enough degree of depth, manual control turns down throttle, and drill speed is slack-off, extract drill bit out, drill bit stall enters holding state.Due to symmetrical installation of blade of arc double blade 2, make drill bit shoveling automatic steady, shake little.May wear to cannot use time and can get in time lower arc double-pole apex point when arc double-pole apex point digs cave through productivity, load onto new product, handling easily.Not only drill bit utilization rate improves more than 20 times thus, and drill bit use cost reduces more than 50%, be contained in can lightly dig fast cave or be contained on the earth auger identical or close with " multifunctional afforestation machine of working soil " power on the earth auger of " multifunctional afforestation machine of working soil " and also can dig fast cave.
Claims (4)
1. an earth auger arc double-pole drill bit, it is characterized in that, comprise arc double-pole apex point and seamless steel pipe drilling rod (5), wherein arc double-pole apex point is made up of spiral positioning apex point (1), arc double blade (2) and apex point screw thread round steel (3).
2. according to the drill bit of claim 1, it is characterized in that, it is cambered blade wide outside and narrow inside that two of arc double blade (2) dig cave blade, and two cambered blades and level intersect certain angle and spiral positioning apex point (1) and the welding of apex point screw thread round steel and be fused into one.
3. according to the drill bit of claim 1, it is characterized in that, apex point screw thread round steel (3) is in the upper end of spiral positioning apex point (1), and its screw-threaded coupling direction is contrary with shoveling direction of rotation.
4. according to the drill bit of claim 1, it is characterized in that having in the lower end of seamless steel pipe drilling rod (5) with apex point screw thread round steel (3) and can load and unload the drilling rod internal thread (4) spinning mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471554.5U CN203978290U (en) | 2014-08-14 | 2014-08-14 | A kind of earth auger arc double-pole drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471554.5U CN203978290U (en) | 2014-08-14 | 2014-08-14 | A kind of earth auger arc double-pole drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978290U true CN203978290U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420471554.5U Active CN203978290U (en) | 2014-08-14 | 2014-08-14 | A kind of earth auger arc double-pole drill bit |
Country Status (1)
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| CN (1) | CN203978290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196457A (en) * | 2014-08-14 | 2014-12-10 | 许丽 | Arc-shaped double-blade drill bit of hole digger |
| CN107690505A (en) * | 2015-06-08 | 2018-02-13 | 斯伦贝谢技术有限公司 | Replaceable cementation zone |
-
2014
- 2014-08-14 CN CN201420471554.5U patent/CN203978290U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196457A (en) * | 2014-08-14 | 2014-12-10 | 许丽 | Arc-shaped double-blade drill bit of hole digger |
| CN104196457B (en) * | 2014-08-14 | 2019-05-03 | 许丽 | A kind of earth auger arc double-pole drill bit |
| CN107690505A (en) * | 2015-06-08 | 2018-02-13 | 斯伦贝谢技术有限公司 | Replaceable cementation zone |
| US10632713B2 (en) | 2015-06-08 | 2020-04-28 | Schlumberger Technology Corporation | Replaceable hardfacing |
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| C14 | Grant of patent or utility model | ||
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