CN109707325A - A drill rod guide bush of a roller cone drill - Google Patents
A drill rod guide bush of a roller cone drill Download PDFInfo
- Publication number
- CN109707325A CN109707325A CN201711020285.5A CN201711020285A CN109707325A CN 109707325 A CN109707325 A CN 109707325A CN 201711020285 A CN201711020285 A CN 201711020285A CN 109707325 A CN109707325 A CN 109707325A
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- China
- Prior art keywords
- hole
- roller cone
- guide sleeve
- lining
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004677 Nylon Substances 0.000 claims abstract description 24
- 229920001778 nylon Polymers 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 31
- 230000006378 damage Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 201000004569 Blindness Diseases 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 210000000003 hoof Anatomy 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003831 antifriction material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
本发明涉及一种牙轮钻机钻杆导套，以解决现有导套存在的寿命较短或结构较复杂，振动和噪音较大的技术问题。本发明包括外套和内衬，所述外套内孔呈两段阶梯的直孔，内衬外圆柱与外套半盲直孔过盈安装；所述半盲直孔的左端面和所述通孔形成的实体区域内，沿径向分布轴向贯穿设有凹凸槽，所述通孔的内径大于内衬的内径，所述凹凸槽的实心部分能有效阻挡因内衬破裂后飞溅对人和物的伤害；所述凹凸槽的空心部分是方便拆卸内衬的拆卸工具的着力点。所述内衬为直通式同心套筒，其外圆柱一端设有便于装入的导向角圆锥面。所述内衬的材料是填充MC尼龙，以延长其使用寿命、降低成本和噪音及振动。并且结构简单紧凑，无需维护，拆装更换方便。
The invention relates to a drill rod guide sleeve of a roller cone drilling machine, which solves the technical problems of short service life or complex structure, large vibration and noise of the existing guide sleeve. The invention includes an outer casing and an inner lining, the inner hole of the outer casing is a straight hole with two steps of steps, the outer cylinder of the inner lining and the semi-blind straight hole of the outer casing are installed with interference; the left end face of the semi-blind straight hole and the through hole are formed In the solid area of the lining, there are concave-convex grooves running through the radial direction. The inner diameter of the through hole is larger than the inner diameter of the lining. Damage; the hollow part of the concave-convex groove is the focal point of the dismantling tool that facilitates dismantling the inner liner. The inner lining is a straight-through concentric sleeve, and one end of the outer cylinder is provided with a conical surface of a leading angle for easy installation. The material of the inner lining is filled with MC nylon to prolong its service life, reduce cost and noise and vibration. In addition, the structure is simple and compact, no maintenance is required, and the disassembly, assembly and replacement are convenient.
Description
Technical field
The present invention relates to a kind of guide sleeve for drill rod of rotary drill.
Background technique
As shown in Figure 4,5, drilling rod guide sleeve used in the rotary drill in existing mine is largely that monoblock type hardening is closed
An external cylindrical surface is in two sections of stair-stepping sleeves caused by golden steel, and the larger portion of the sleeve diameter is radially centrosymmetric to open
There are two shape of a hoof slots.When rotary drill drills, the horseshoe type groove of drilling rod guide sleeve and drilling rod is led from focusing on drilling machine chain-wales
Set is fixed, and drilling machine rotates drilling rod in drilling rod guide sleeve.As shown in figure 5, gradually using a kind of rotary drill machine drill now
Head guide sleeve (ZL201210410733.3), the drilling rod guide sleeve are the groups for the replaceable inner sleeve that inner and outer sleeves have relative rotation structure
Box-like drilling rod guide sleeve；But still have biggish gap between drilling rod and the inner hole (set) of the drilling rod guide sleeve of two kinds of structures, due to
Drilling rod is the suspension type elongated shaft of thread connection, when high speed rotational operation, has certain beat and the direct steel to steel that generates
It hits；To generate biggish vibration and noise and impact force, and its service life and higher cost are influenced, especially to bearing
The influence in service life is very big, has a adverse impact to the occupational safety and health of surrounding enviroment and employee.Drilling rod guide sleeve and drilling rod have
Mutually abrasion, such guide sleeve for drill rod of rotary drill abrasion will scrap to a certain extent, especially whole hardening agent steel
Guide sleeve belongs to disposable components.
In addition, due to the guide sleeve be it is knockdown, structure is more complex, so that guide sleeve structure size is larger not compact enough, squeezes
Account for limited chain-wales working space, while the noise that bearing high speed rotation also generates.Although rolling rotating part is marked with profit
Lubricating oil rouge, but drilling rod guide sleeve causes thermal expansion to cause bearing clearance too small, thus shadow for a long time using that can generate certain heat
Ring drilling rod guide sleeve continuous work and service life.
Summary of the invention
The object of the present invention is to provide a kind of simple and compact for structure, noise-and-vibration-reductions, wear-resisting and can repeatedly more changeable liner makes
With cost is relatively low, safeguards a kind of simple guide sleeve for drill rod of rotary drill.
Technical solution of the present invention is related to a kind of guide sleeve for drill rod of rotary drill, including housing, and the housing external cylindrical surface is in
Two sections of stair-stepping sleeves, the relatively large shorter big end of sleeve left end outer diameter radially symmetrically open there are two horseshoe by center line
Shape slot；The housing inner hole is two sections of ladder-like and concentric with the relatively small longer outer circle of housing right end outer diameter ladder straight holes,
The ladder straight hole is by the relatively large longer portion's half-blindness straight hole of right end and close to the relatively small shorter portion in housing shape of a hoof slot one end
Through-hole composition, interference is equipped with liner in the relatively large longer portion's half-blindness straight hole of ladder straight hole right end, the liner be by
The entity area that the concentric sleeve of through type of clear opening and outside cylinder composition, the left side of the half-blindness straight hole and the through-hole are formed
It is radially distributed to axially penetrate through equipped with tongue and groove in domain.
The further technical solution of the present invention is: the material of the liner is filling MC nylon.Certainly other also can be selected
With the metals such as certain mechanical strength, wear-resisting or nonmetallic and composite material etc..
The further technical solution of the present invention is: the material of the liner is that toughening modifying fills MC nylon or plasticising profit
Sliding Modification MC nylon.
Further technical solution is the present invention again: the material of the liner is that toughening modifying fills MC nylon.
After the technical solution, because being to have certain gap between the inner hole and drill rod of blast-hole drill of the liner.And
The material of liner is the filling MC nylon material with the function admirables such as certain mechanical performance, absorbing, wear-resisting, antifriction；So as to
To slow down the direct impact between drilling rod and metal-coating, so that the Rotation Noise that rotary drill guide sleeve generates at work is more
It is small, and can prolong its service life, while also mitigating abrasion of the drilling rod guide sleeve to drilling rod, and more changeable liner is convenient, structure is tight
It gathers.
The further technical solution of the present invention is: the magnitude of interference μ of the half-blindness straight hole and liner outside cylinder cooperation
Value range cooperates diameter D in (0.002~0.0025) times1Between, unit is millimeter.
The further technical solution of the present invention is: because interference is equipped in the concentric sleeve of through type in the half-blindness straight hole
Lining, for convenient for assembly, liner outside cylinder one end is equipped with the guide angle α circular conical surface for being convenient for being packed into, and right against the housing
The left side of relatively long larger half-blindness straight hole is held, the value range of the guide angle α is selected as 15 ° between 10 °~20 °.
The further technical solution of the present invention is: generating biggish noise and damage to avoid drilling rod steel to steel from directly hitting
The through-hole of housing, the housing are greater than the straight-through of the liner close to the relatively small shorter portion's through-hole internal diameter D in shape of a hoof slot one end
Hole internal diameter d, for the value range of the through-hole internal diameter D between (d+10)~(d+20), unit is millimeter.
The further technical solution of the present invention is: the housing is close to the relatively small shorter portion's through-hole in shape of a hoof slot one end
Internal diameter D is selected as (d+15), and unit is millimeter.
The further technical solution of the present invention is: the tongue and groove is quincunx slot or rectangular flower key-shaped slot, is selected as plum blossom
Shape slot.
The further technical solution of the present invention is: the tongue and groove is divided into hollow parts and solid section.
After the technical solution, mainly easy disassembly liner, while making after liner rupture in high-speed rotating drilling rod
The injury for being not to fly out under to people and object.
The beneficial effects of the present invention are: at low cost, Maintenance free, disassembling, assembling and replacing is convenient, long service life.Due to MC nylon
It is kind of an ideal antifriction material under more dust operating conditions, reduces abrasion of the drilling rod guide sleeve inner hole to drilling rod external cylindrical surface, favorably
In the service life for extending drilling rod；It is light-weight since MC nylon inner lining specific gravity only has 1.16~1.2, it is replaced convenient for field condition,
The drilling rod guide sleeve of the liner of the housing of steel and MC nylon composition also has certain weight simultaneously, and drilling rod guide sleeve " escape " is avoided to go out to bore
Machine chain-wales；Expendable part MC nylon inner lining can machine, and die forming especially can be used without machining, can save in this way
Material and machining expense, further reduce the cost.Due to being the interior hole portion for replacing existing drilling rod guide sleeve with liner of the invention
Point, so not having to change with chain-wales coupling part, there is versatility, and it is easy to promote and utilize, while housing is without alloy
Steel and cure process.
Detailed description of the invention
The side view of guide sleeve Fig. 1 of the invention
Fig. 2 along Fig. 1 shape of a hoof groove center line guide sleeve semi-cutaway (D be housing close to shape of a hoof slot one end it is relatively small compared with
Short through-hole diameter, diameter, the D that d is liner clear opening1For the cooperation diameter of half-blindness straight hole and liner outside cylinder)
Liner guide angle circular conical surface shown in Fig. 3 Fig. 2 abuts the enlarged drawing of half-blindness straight hole left side
Semi-cutaway of Fig. 4 prior art monoblock type guide sleeve along shape of a hoof groove center line
Semi-cutaway of Fig. 5 prior art combined type guide sleeve along shape of a hoof groove center line
Specific embodiment
As shown in Fig. 2, being on the basis of the guide sleeve for drill rod of rotary drill of the prior art, to the portion of itself and drilling rod " cooperation "
Point, i.e. the bore section of drilling rod guide sleeve improves.Guide sleeve of the invention includes the housing 1 of tubular, the outside cylinder of the housing 1
Face is in two sections of stair-stepping sleeves, and radially center line is symmetrically opened there are two being used in the relatively large shorter portion of sleeve left end outer diameter
The horseshoe shaped recess of fixed guide sleeve, the relatively small longer portion's outer circle 11 of right end outer diameter.This is to say, housing 1 and rotary drill
Chain-wales coupling part is constant.
1 inner hole of housing is two sections of ladder-like and concentric with the relatively small longer outer circle 11 of 1 right end outer diameter of housing ranks
Terraced straight hole 12, the ladder straight hole 12 is by the relatively large longer portion's half-blindness straight hole 121 of right end and close to 1 shape of a hoof slot one end of housing
Relatively small shorter portion's through-hole 122 forms, interference peace in the relatively large longer portion's half-blindness straight hole 121 of 12 right end of ladder straight hole
Equipped with liner 2, the concentric sleeve of through type that the liner 2 is made of clear opening 21 and outside cylinder, the half-blindness straight hole 121
It is radially distributed to axially penetrate through equipped with tongue and groove 14 in the entity area that left side 13 and the through-hole 122 are formed.
Further technical solution is: the material of the liner 2 is filling MC nylon, which has certain machinery strong
Degree, good wear-resisting, antifriction, heat-resisting, corrosion resistant, self-lubrication, coefficient of friction is small, absorbing, does not seize, does not damage neck, and source is wide,
It is at low cost.Therefore, it is heavy-duty low-speed, heavily loaded middling speed, middle load middling speed, temperature work under -40 DEG C~118 DEG C and more dust operating conditions
A kind of ideal antifriction material made, the working condition requirement of rotary drill is met using the material.Certainly other also can be selected has
The metals or nonmetallic and composite material etc. such as certain mechanical strength, wear-resisting avoid direct steel to steel using the material and hit,
To greatly slow down the influence of noise and vibration, it is unfavorable that reduction generates the occupational safety and health of surrounding enviroment and employee
It influences, prolongs its service life and reduce cost.
Further technical solution is: the material of the liner 2 is that toughening modifying fills MC nylon or plasticising lubrication changes
Property filling MC nylon.
Further technical solution is again: the material of the liner 2 is that toughening modifying fills MC nylon.
Further technical solution is: the concentric sleeve liner 2 of through type is made of clear opening 21 and external cylindrical surface,
Fill MC nylon inner lining 2 outside cylinder directly with half-blindness straight hole 121 cooperate magnitude of interference it is excessive, in fact it could happen that be not easy press fitting and
Easily there is deflection and pressure break during press fitting, so that material is generated biggish internal stress after indentation, can also reduce the elasticity of material
Modulus, to be also easy to produce relaxation；Magnitude of interference is too small, then enclasping force is inadequate after installing, and stability is poor, loosens liner 2 easily
Deng；Because of guide sleeve for drill rod of rotary drill size less and 2 wall thickness of liner be not it is very thick, according to shock loading feature and the temperature difference and wet
Degree, unlubricated, the factors such as outdoor rainy (snow) water of exposed operation；Because magnitude of interference size can influence the internal stress of material, elasticity
Modulus etc., so magnitude of interference must be suitable；The value of the half-blindness straight hole 121 and the magnitude of interference μ of 2 outside cylinder of liner cooperation
Range cooperates diameter D in (0.002~0.0025) times1Between, unit is millimeter, when small, the dry temperature difference of cooperation diameter dimension is big
When, it takes large values, otherwise gets the small value.Magnitude of interference μ has small variation to the housing 1 and 2 relative dimensions of liner, can be ignored not
Meter.
Further technical solution is: as shown in figure 3, because filling MC nylon elastic modular ratio steel is much smaller, therefore fill MC
The magnitude of interference of nylon inner lining 2 is bigger than steel part, and in the case where guaranteeing same interference enclasping force enough, the liner 2 is by leading directly to
The concentric sleeve of through type in hole 21 and external cylindrical surface composition, liner 2 and to be further ensured that and the half-blindness straight hole convenient for assembly
121 interference enclasping force, 22 circular conical surface of guide angle α that described 2 outside cylinder one end of liner is equipped with convenient for being packed into, and against described outer
The left side 13 of the relatively long larger half-blindness straight hole of right end is covered, the value range of the guide angle α 22 is excellent between 10 °~20 °
It is selected as 15 °.
Further technical solution is: generating biggish noise and damage housing to avoid drilling rod steel to steel from directly hitting
Through-hole 122, the housing 1 are greater than the straight of the liner 2 close to the relatively small shorter 122 internal diameter D of portion's through-hole in shape of a hoof slot one end
For the value range of through-hole 21 internal diameter d, the internal diameter D of the through-hole 122 between (d+10)~(d+20), unit is millimeter.
Further technical solution is: the housing is in the relatively small shorter portion's through-hole 122 in shape of a hoof slot one end
Diameter D is selected as (d+15), and unit is millimeter.
Further technical solution is: as depicted in figs. 1 and 2, the tongue and groove 14 is quincunx slot or rectangular flower key-shaped
Slot is selected as quincunx slot, because its structure is simply easy to process.
Further technical solution is: because filling MC nylon inner lining 2 will appear after a period of use it is axial, lateral or vertical
Lateral crackle, even rupture fly out hurt sb.'s feelings, the safety accidents such as damaging articles.As shown in Figure 1, it is hollow that the tongue and groove 14, which divides,
Part 141 and solid section 142, the solid section 142 of the tongue and groove 14 can effectively stop after filling the rupture of MC nylon inner lining 2
Injury of the splash of generation to people and object.Due to 2 outer circle of liner and relatively long larger 121 mistake of half-blindness straight hole of 1 right end of housing
It is full of cooperation, in maintenance, such as when the abrasion of liner 2 is to a certain extent or after damage, with tools such as drawing horses when dismantling liner 2,
The hollow parts 141 of tongue and groove 14 there has been impetus, facilitate the disassembly of liner 2；As 2 damage comparison of liner is serious or is difficult to
When disassembly, because MC nylon is afraid of high temperature, it is possible to be assisted taking out or be directly taken out with the mode of fire or heating.
Better embodiment of the invention is described in conjunction with attached drawing detail above, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic shape, these simple deformations belong to protection scope of the present invention.If liner 2 is using the PA6+ in other nonmetallic composites
The composite material etc. of solid lubricant composition, this has no effect on the object of the invention realization.
It is further to note that each technical characteristic as described in the above specific embodiments, reconcilable
In the case of, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention is to various possible
No further explanation will be given for combination.
Above-described embodiment is used for illustrative purposes only, and not limitation of the present invention, in relation to the common of technical field
Technical staff without departing from the spirit and scope of the present invention can be with various changes can be made and modification, therefore owns
Equivalent technical solution also should belong to scope of the invention, and scope of patent protection of the invention should be limited by each claim.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020285.5A CN109707325A (en) | 2017-10-26 | 2017-10-26 | A drill rod guide bush of a roller cone drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711020285.5A CN109707325A (en) | 2017-10-26 | 2017-10-26 | A drill rod guide bush of a roller cone drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109707325A true CN109707325A (en) | 2019-05-03 |
Family
ID=66253534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711020285.5A Pending CN109707325A (en) | 2017-10-26 | 2017-10-26 | A drill rod guide bush of a roller cone drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109707325A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7217501A (en) * | 1999-01-06 | 2001-11-15 | Western Well Tool, Inc. | Drill pipe protector assembly |
| CN201526301U (en) * | 2009-09-18 | 2010-07-14 | 鞍钢集团矿业公司 | Dust-proof guide bushes for roller cone drilling rigs |
| CN202768774U (en) * | 2012-09-11 | 2013-03-06 | 中钢集团衡阳重机有限公司 | Pin tooth of roller pin type pin wheel |
| CN203030974U (en) * | 2013-01-23 | 2013-07-03 | 山东东宇工程机械有限公司 | Boring sleeve |
| CN203902191U (en) * | 2013-12-27 | 2014-10-29 | 东风汽车有限公司 | Shock-absorbing wear-resistant lining |
| CN207761588U (en) * | 2017-10-26 | 2018-08-24 | 中钢集团衡阳机械有限公司 | A kind of guide sleeve for drill rod of rotary drill |
-
2017
- 2017-10-26 CN CN201711020285.5A patent/CN109707325A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7217501A (en) * | 1999-01-06 | 2001-11-15 | Western Well Tool, Inc. | Drill pipe protector assembly |
| CN201526301U (en) * | 2009-09-18 | 2010-07-14 | 鞍钢集团矿业公司 | Dust-proof guide bushes for roller cone drilling rigs |
| CN202768774U (en) * | 2012-09-11 | 2013-03-06 | 中钢集团衡阳重机有限公司 | Pin tooth of roller pin type pin wheel |
| CN203030974U (en) * | 2013-01-23 | 2013-07-03 | 山东东宇工程机械有限公司 | Boring sleeve |
| CN203902191U (en) * | 2013-12-27 | 2014-10-29 | 东风汽车有限公司 | Shock-absorbing wear-resistant lining |
| CN207761588U (en) * | 2017-10-26 | 2018-08-24 | 中钢集团衡阳机械有限公司 | A kind of guide sleeve for drill rod of rotary drill |
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Application publication date: 20190503 |
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