CN108044804A - A kind of back taper reaming alloy bit - Google Patents
A kind of back taper reaming alloy bit Download PDFInfo
- Publication number
- CN108044804A CN108044804A CN201711147723.4A CN201711147723A CN108044804A CN 108044804 A CN108044804 A CN 108044804A CN 201711147723 A CN201711147723 A CN 201711147723A CN 108044804 A CN108044804 A CN 108044804A
- Authority
- CN
- China
- Prior art keywords
- back taper
- reaming
- tensioner
- pipe body
- drill pipe
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
- B28D1/146—Tools therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a kind of back taper reaming alloy bit, including：Drill pipe body is connected the reaming main part for being used to implement reaming with actuator；The drill pipe body is internally provided with elastomeric element, and back taper tensioner drill bit is provided in the drill pipe body；Movable elongated slot is provided in the drill pipe body along its length, the movable elongated slot is penetrated through in drill pipe body diametric(al)；It is unbearable, it is used to implement the central part of guiding and tensioner；It is described it is unbearable be movably arranged on inside drill pipe body, the elastomeric element is pressed on unbearable upper end；Unbearable slided up and down by a connection pivot pin with movable elongated slot is connected, and the unbearable tensioner stroke is equal to the sliding stroke infiltrated inside movable elongated slot.The back taper reaming alloy bit, can quickly and easily be drilled to back taper counterbore, meanwhile, it is capable to ensure the quality of reaming, reaming procedure mesoporous will not be caused to be damaged, and add the connection pull strength of reverse taper holes and expansion bolt, and reaming is convenient highly practical.
Description
Technical field
The present invention relates to building implement technical fields, more specifically to a kind of back taper reaming alloy bit.
Background technology
As stone material, ceramic tile dry-hanging constantly promote, a kind of back of the body bolt connection structure obtains market and generally approves, it has
Have that simple operation, construction efficiency are high, the cost of material is low, back of the body bolt perforate can once be completed in factory process, meet national popularization
Energy conservation and environmental protection technique.But Stone-ceramic brick class material belongs to rigidity easily explosion type, and drilling technique can only meet cylinder at present
Counterbore technique, boring surface is bright and clean, and stainless steel expansible plug is rigid material, and surface is smooth, two kinds of material connections（Rise and connect）
Undue force is easy to make stone material, ceramic tile explosion, and so as to influence to connect fastness, in addition two kinds of material linear expansion coefficients are different,
Because of temperature change, also to connection fastness, there are potential security risks.
Chinese patent literature（The day for announcing：On October 18th, 2000, notification number：CN2401296Y）A kind of back taper is disclosed to expand
Drill, it is that have open slot in the end of drilling rod head design one, and the both sides of open slot are equipped with a pair of of blade, this is to blade
Rear end is separately fixed on the fixing pin of open slot heel；A pilot hole is designed in the axle center of drilling rod head, is pacified in pilot hole
The sliding mandril with the conical surface equipped with one, the conical surface of sliding mandril are engaged with the inside knife spine front end cambered surface of insert, are boring
The sidewall design of head has the standing screw of a control sliding mandril displacement range.The drill bit can expand back taper step bar planting hole,
So as to increase substantially reinforcing bar, structure glue and the bond strength of concrete, it is ensured that value muscle quality, and reduce cost.
What above-mentioned technical proposal solved is that existing value muscle hole strength is inadequate, there are the problems such as security risk, is applied
Object is reinforcing bar, structure glue and concrete.
The content of the invention
The purpose of the present invention is to solve existing Stone-ceramic brick class materials can only meet cylindrical bore technique, stainless
Steel expansible plug connects（Rise and connect）Undue force easily makes stone material, ceramic tile explosion, and so as to influence to connect fastness, there are potential safety is hidden
The problems such as suffering from, and provide one kind can on Stone-ceramic brick class material rapid and convenient ground auger back taper counterbore, increase and expansion bolt
Connection pull strength, the back taper reaming alloy bit of no security risk.
Technical solution is used by the present invention realizes its technical purpose：A kind of back taper reaming alloy bit, including：
Drill pipe body is connected the reaming main part for being used to implement reaming with actuator；The drill pipe body is internally provided with elasticity
Component is provided with back taper tensioner drill bit in the drill pipe body；Work is provided with along its length in the drill pipe body
Dynamic elongated slot, the movable elongated slot are penetrated through in drill pipe body diametric(al)；
It is unbearable, it is used to implement the central part of guiding and tensioner；It is described it is unbearable be movably arranged on inside drill pipe body, the bullet
Property component is pressed on unbearable upper end；Unbearable slided up and down by a connection pivot pin with movable elongated slot is connected, described
Unbearable tensioner stroke be equal to and infiltrate sliding stroke inside movable elongated slot.
The back taper reaming alloy bit by a drill pipe body and is movably arranged on infiltrating inside drill pipe body,
It is unbearable to be moved up and down by a connection pivot pin along movable elongated slot, and bit upper end is provided with an elastomeric element, when needing to carry out
During reaming, drill pipe body is connected to actuator（Drilling machine）On, elastomeric element is put into inside drill pipe body, then by unbearable installation
To inside drill pipe body, alignment needs the cylindrical hole expanded, presses downwards drill pipe body, and unbearable and drill pipe body enters in cylindrical hole
Portion is flexibly connected due to unbearable with drill pipe body, is infiltrated and is directly dropped to the bottom of cylindrical hole when entering inside cylindrical hole, and
Drill pipe body is contacted, the back taper in drill pipe body after certain position is dropped to due to unbearable effect with the hole wall of cylindrical hole
The realization of shape tensioner drill bit cuts processing to the expansion of cylinder hole wall, as drill pipe body is constantly pressed downward, under unbearable guiding, and drilling rod
On back taper tensioner drill bit be gradually stretched, the hole wall of cylindrical hole in back taper is expanded downwards and is cut, due to unbearable by upper end
The mutual top pressure of the bottom hole of elastomeric element and cylindrical hole is motionless, at this point, the back taper tensioner drill bit on drilling rod is big by gradual support, until
Unbearable to be integrated completely with back taper tensioner bit weight, back taper tensioner drill bit completes entire reaming procedure, at this point, back taper
Tensioner drill bit is softened maximum taper namely needs the back taper hole shape expanded, completes reaming.The back taper reaming alloy bores
Head can quickly and easily be drilled to back taper counterbore, increase the connection pull strength of reverse taper holes and expansion bolt, the convenient practicability of reaming
It is strong etc..
Preferably, the back taper tensioner drill bit is in multi-clove type structure setting.Back taper tensioner drill bit is in multi-clove type
Structure, such structure are advantageously implemented expansion, disclosure satisfy that the needs for expanding back taper counterbore.Can be two-flap type, three-clove style,
FFour piece type, multi-clove type, the valve number setting of back taper tensioner drill bit can make choice according to the size of counter bore diameter.
Preferably, the back taper tensioner drill bit is corundum drill bit.Using corundum drill bit, intensity is high, drilling
Effect is good.
Preferably, the drill pipe body includes the drillstock and drilling rod that integral type is set.Integral type sets drillstock and brill
Bar had not only facilitated manufacture, but also can ensure use intensity.
Preferably, the back taper tensioner drill bit is integrally disposed upon the lower end of drilling rod.Back taper tensioner drill bit is with boring
It is high that bar is wholely set such intensity.
Preferably, the back taper tensioner drill bit is movably connected in the lower end of drilling rod, the back taper tensioner is bored
Head is connected with drilling rod by plug-in card.Certainly, back taper tensioner drill bit can also be flexibly connected with drilling rod, and logical plug-in card mode is set,
Such structure is conducive to select corresponding back taper tensioner drill bit according to different reaming sizes, can realize the logical of drilling rod
The property used.
Preferably, the drill pipe body is internally provided with installation cavity and tensioner chamber, the tapered knot of tensioner chamber
Structure extends internally setting upwards from the lower end of drill pipe body, and the installation cavity is arranged on the top of tensioner chamber and connects with tensioner chamber
It is logical.It is elastomeric element and unbearable setting for convenience that installation cavity and tensioner chamber are set inside drill pipe body, and tensioner chamber can be square
Just the unbearable expansion moved up and down namely facilitate back taper drill bit.
Preferably, the movable elongated slot intersects perforation with installation cavity.The convenient unbearable installation of such structure and on
Lower movement.
Preferably, the unbearable sliding bar and core for including being wholely set, the core are in inverted cone-shaped structure
It sets, the connecting hole of the upper end setting of the sliding bar, the connection pivot pin is threaded through inside connecting hole and connecting shaft
The both ends of pin are slidably arranged in respectively inside movable elongated slot.
Preferably, unbearable be internally provided with sucker, the sucker is connected by sweep-up pipe and external dust exhaust apparatus grafting
It connects.Sucker and sucker is set to be connected with external dust exhaust apparatus, such structure after the completion of reaming, can be by infiltrating on
Sucker suctions out the dust inside the counterbore expanded, realizes clean purpose.
Preferably, elastomeric element is spring either rubber bullet block or spring pad.
The beneficial effects of the invention are as follows：The back taper reaming alloy bit, can quickly and easily be drilled to back taper counterbore, together
When, it can ensure the quality of reaming, reaming procedure mesoporous will not be caused to be damaged, add the connection of reverse taper holes and expansion bolt
Pull strength, reaming are convenient highly practical.
Description of the drawings
Fig. 1 is a kind of structure diagram of this hair invention back taper reaming alloy bit；
Fig. 2 is a kind of sectional view of back taper reaming alloy bit of the present invention；
Fig. 3 is a kind of structure diagram of drill pipe body in the present invention；
Fig. 4 is the structure diagram of another angle of drill pipe body in the present invention；
Fig. 5 is a kind of structure diagram of back taper tensioner drill bit in the present invention；
Fig. 6 is a kind of structure diagram infiltrated in the present invention；
Fig. 7 is second of the structure diagram infiltrated in the present invention；
Fig. 8 is a kind of procedure structure schematic diagram of back taper reaming alloy bit reaming of the present invention；
Fig. 9 is a kind of mounting structure schematic diagram of the back of the body bolt screw rod after reaming in the present invention；
In figure：1st, drill pipe body, 2, elastomeric element, 3, back taper tensioner drill bit, 4, movable elongated slot, 5, unbearable, 6, connection pivot pin,
7th, drillstock, 8, drilling rod, 9, installation cavity, 10, tensioner chamber, 11, sliding bar, 12, core, 13, connecting hole, 14, sucker, 15, dust suction
Pipe, 16, external dust exhaust apparatus, 17, ceramic tile, 18, back of the body bolt nut, 19, nut, 20, back of the body bolt screw rod, 21, gasket, 22, spring pad
Piece.
Specific embodiment
Technical scheme is described in further detail below by specific embodiment and with reference to attached drawing.
Embodiment 1：
In Fig. 1, embodiment shown in Fig. 2, a kind of back taper reaming alloy bit, including：
Drill pipe body 1 is connected the reaming main part for being used to implement reaming with actuator；Drill pipe body 1 is internally provided with elastomeric element
2, back taper tensioner drill bit 3 is provided in drill pipe body 1；Movable elongated slot 4 is provided in drill pipe body 1 along its length, activity
Elongated slot 4 is penetrated through in 1 diametric(al) of drill pipe body；
Unbearable 5, it is used to implement the central part of guiding and tensioner；Unbearable 5 are movably arranged on inside drill pipe body 1, and elastomeric element 2 is pressed
It is located at unbearable 5 upper end；Unbearable 5 are slided up and down with movable elongated slot 4 by a connection pivot pin 6 and are connected, unbearable 5 tensioner strokes etc.
In unbearable 5 sliding stroke inside movable elongated slot 4.Movable elongated slot is kidney-shaped elongated slot in the present embodiment, the length of movable elongated slot
Equal to the length outside unbearable stretching drilling rod, that is to say, that it is unbearable to be fully retracted inside drilling rod when strutting back taper tensioner drill bit 3,
Unbearable upper end just slides into the last upper end of movable elongated slot 4, when back taper tensioner drill bit 3 stretches out drilling rod most external, infiltrates
Upper end just slide into the bottom of movable elongated slot 4.In the present embodiment, elastomeric element is spring.
Back taper tensioner drill bit 3 is in multi-clove type structure setting（See Fig. 5）.Back taper tensioner drill bit is arranged in the present embodiment
FFour piece type structure.Back taper tensioner drill bit 3 is corundum drill bit.
Drill pipe body 1 includes drillstock 7 and the drilling rod 8 that integral type is set.Back taper tensioner drill bit 3 is integrally disposed upon drilling rod 8
Lower end.
Drill pipe body 1 is internally provided with installation cavity 9 and tensioner chamber 10（See Fig. 3, Fig. 4）, 10 tapered structure of tensioner chamber is certainly
The lower end of drill pipe body 1 extends internally setting upwards, and installation cavity 9 is arranged on the top of tensioner chamber 10 and is connected with tensioner chamber 10.
Movable elongated slot 4 intersects perforation with installation cavity 9.
Unbearable 5 include the sliding bar 11 being wholely set and core 12（See Fig. 6）, core 12 is set in inverted cone-shaped structure, sliding
The connecting hole 13 that the upper end of lever 11 is set, connection pivot pin 6 are threaded through 13 inside of connecting hole and connect the both ends difference of pivot pin 6
It is slidably arranged in inside movable elongated slot 4.
Embodiment 2：
Technical solution in embodiment 2 is substantially the same manner as Example 1, the difference is that：3 activity of back taper tensioner drill bit is even
The lower end of drilling rod 8 is connected on, back taper tensioner drill bit 3 is connected with 8 plug-in card of drilling rod（See Fig. 7）.In the present embodiment, elastomeric element is rubber
Glue bullet block.
Embodiment 3：
Technical solution in embodiment 3 and the technical solution in embodiment 1 are essentially identical, the difference is that：
Unbearable 5 are internally provided with sucker 14, and sucker 14 passes through sweep-up pipe 15 and 16 plug connection of external dust exhaust apparatus.The present embodiment
In, elastomeric element is spring pad.
Back taper reaming alloy bit described in above-described embodiment, drill pipe body 1 include drillstock, drilling rod and are arranged on drilling rod
The back taper tensioner drill bit 3 of upper end, back taper tensioner drill bit 3 have multiple drilling knives in multi-clove type structure setting, in drill pipe body 1
Portion is provided with installation cavity 9, and installation cavity 9 is internally provided with elastomeric element, such as spring, in the drill pipe body 1 corresponding to installation cavity 9
Movable elongated slot 4 radially is equipped with to wearing, movable elongated slot 4 is set along the axial direction of drill pipe body 1, is set in the lower section of installation cavity 9
There is tensioner chamber 10, unbearable 5 are internally provided in tensioner chamber 10, infiltrating 5 includes sliding bar 11 and core 12, the upper end of sliding bar 11
Connecting hole is provided with, connecting hole 13 is internally provided with a connection pivot pin 6, and connection pivot pin 6 is threaded through in movable elongated slot 4 so that is bored
The heart can be moved up and down in the drive lower edge activity elongated slot 4 of connection pivot pin 6, be risen so as to fulfill unbearable to back taper tensioner drill bit 3
It opens and tightens, and the elastomeric element in bit upper end is pressed on 3 upper end of back taper tensioner drill bit.
As shown in figure 8, when need to cylindrical hole carry out reaming when, by drill pipe body be connected to actuator such as hand drill or
On drilling machine, unbearable and back taper tensioner drill bit 3 is aligned to the cylindrical hole for needing to expand, presses downwards drill pipe body, unbearable and drilling rod
Main body enters inside cylindrical hole, is flexibly connected due to unbearable with drill pipe body, infiltrates and directly drops when entering inside cylindrical hole
To the bottom of cylindrical hole, and drill pipe body is connect after certain position is dropped to due to unbearable effect with the hole wall of cylindrical hole
It touches, the back taper tensioner drill bit realization in drill pipe body cuts processing to the expansion of cylinder hole wall, as drill pipe body is constantly pressed downward,
Under unbearable guiding, the back taper tensioner drill bit on drilling rod is gradually stretched, and the hole wall of cylindrical hole is expanded downwards in back taper
It cuts, due to unbearable motionless by the elastomeric element of upper end and the mutual top pressure of the bottom hole of cylindrical hole, at this point, the back taper tensioner on drilling rod
Drill bit is big by gradual support, until unbearable be integrated completely with back taper tensioner bit weight, back taper tensioner drill bit is completed entire
Reaming procedure at this point, back taper tensioner drill bit is softened maximum taper namely needs the back taper hole shape expanded, is completed to expand
Hole.After completing reaming on ceramic tile 17, back of the body bolt screw rod 20 inside reaming can be installed, and pass through nut 19, back of the body bolt nut 18
The installation that back of the body bolt screw rod can be completed in gasket 21, spring shim 22 etc. is fixed（See Fig. 9）.
The back taper reaming alloy bit, can quickly and easily be drilled to back taper counterbore, increase reverse taper holes and expansion bolt
Pull strength is connected, reaming is convenient highly practical etc..
Claims (10)
1. a kind of back taper reaming alloy bit, it is characterised in that including：
Drill pipe body（1）, the reaming main part for being used to implement reaming is connected with actuator；The drill pipe body（1）Inside is set
Flexible component（2）, the drill pipe body（1）On be provided with back taper tensioner drill bit（3）；The drill pipe body（1）On
Movable elongated slot is provided with along its length（4）, the movable elongated slot（4）In drill pipe body（1）Diametric(al) penetrates through；
It is unbearable（5）, it is used to implement the central part of guiding and tensioner；Described is unbearable（5）It is movably arranged on drill pipe body（1）It is interior
Portion, the elastomeric element（2）It is pressed on unbearable（5）Upper end；Described is unbearable（5）Pass through a connection pivot pin（6）With work
Dynamic elongated slot（4）Connection is slided up and down, described is unbearable（5）Tensioner stroke, which is equal to, to infiltrate in movable elongated slot（4）Internal slip row
Journey.
2. a kind of back taper reaming alloy bit according to claim 1, it is characterised in that：The back taper tensioner is bored
Head（3）In multi-clove type structure setting.
3. a kind of back taper reaming alloy bit according to claim 1, it is characterised in that：The back taper tensioner is bored
Head（3）For corundum drill bit.
4. a kind of back taper reaming alloy bit according to claim 1, it is characterised in that：The drill pipe body（1）
The drillstock set including integral type（7）And drilling rod（8）.
5. a kind of back taper reaming alloy bit according to claim 4, it is characterised in that：The back taper tensioner is bored
Head（3）It is integrally disposed upon drilling rod（8）Lower end.
6. a kind of back taper reaming alloy bit according to claim 4, it is characterised in that：The back taper tensioner is bored
Head（3）It is movably connected in drilling rod（8）Lower end, the back taper tensioner drill bit（3）With drilling rod（8）Plug-in card connects.
7. a kind of back taper reaming alloy bit according to claim 1, it is characterised in that：The drill pipe body（1）
It is internally provided with installation cavity（9）With tensioner chamber（10）, the tensioner chamber（10）Tapered structure is from drill pipe body（1）Lower end
Extend internally setting upwards, the installation cavity（9）It is arranged on tensioner chamber（10）Top and with tensioner chamber（10）Connection.
8. a kind of back taper reaming alloy bit according to claim 7, it is characterised in that：The movable elongated slot（4）
With installation cavity（9）Intersect perforation.
9. a kind of back taper reaming alloy bit according to claim 1, it is characterised in that：Described is unbearable（5）Including
The sliding bar being wholely set（11）And core（12）, the core（12）It is set in inverted cone-shaped structure, the sliding bar
（11）Upper end set connecting hole（13）, the connection pivot pin（6）It is threaded through connecting hole（13）It is internal and connect pivot pin
（6）Both ends be slidably arranged in movable elongated slot respectively（4）It is internal.
10. a kind of back taper reaming alloy bit according to claim 1 to 9 any one, it is characterised in that：It is unbearable
（5）It is internally provided with sucker（14）, the sucker（14）Pass through sweep-up pipe（15）With external dust exhaust apparatus（16）Plug connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147723.4A CN108044804A (en) | 2017-11-17 | 2017-11-17 | A kind of back taper reaming alloy bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147723.4A CN108044804A (en) | 2017-11-17 | 2017-11-17 | A kind of back taper reaming alloy bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108044804A true CN108044804A (en) | 2018-05-18 |
Family
ID=62119241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711147723.4A Pending CN108044804A (en) | 2017-11-17 | 2017-11-17 | A kind of back taper reaming alloy bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108044804A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408379A1 (en) * | 1989-07-14 | 1991-01-16 | David Patrick Payne | Improvements in drills |
| EP0447233A2 (en) * | 1990-03-16 | 1991-09-18 | Bridgestone Corporation | Mouthpiece discriminating device for rotary roll extruder |
| WO1997017665A1 (en) * | 1995-11-09 | 1997-05-15 | Custom Ultrasonics, Inc. | Integrated system for cleaning medical instruments |
| CN2685530Y (en) * | 2004-03-09 | 2005-03-16 | 伍利钱 | Drill bits for enlarging the borehole |
| CN2743067Y (en) * | 2004-10-26 | 2005-11-30 | 朱文 | Multiflap hole expansion drill |
| CN102133773A (en) * | 2010-12-10 | 2011-07-27 | 上海康驰建筑技术有限公司 | Reaming method and drilling bit matched therewith |
| CN202627659U (en) * | 2012-04-23 | 2012-12-26 | 安徽盛世高科轨道装备有限公司 | Door with fast unlocking function |
| CN204899504U (en) * | 2015-06-09 | 2015-12-23 | 卢友福 | Bolt for door and window |
| CN106930735A (en) * | 2017-05-02 | 2017-07-07 | 阳泉煤业集团华越机械有限公司 | One kind can open and close type rig screen casing cap |
| CN107214368A (en) * | 2017-08-06 | 2017-09-29 | 葛滨 | A kind of hand-held grooved bit |
-
2017
- 2017-11-17 CN CN201711147723.4A patent/CN108044804A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0408379A1 (en) * | 1989-07-14 | 1991-01-16 | David Patrick Payne | Improvements in drills |
| EP0447233A2 (en) * | 1990-03-16 | 1991-09-18 | Bridgestone Corporation | Mouthpiece discriminating device for rotary roll extruder |
| WO1997017665A1 (en) * | 1995-11-09 | 1997-05-15 | Custom Ultrasonics, Inc. | Integrated system for cleaning medical instruments |
| CN2685530Y (en) * | 2004-03-09 | 2005-03-16 | 伍利钱 | Drill bits for enlarging the borehole |
| CN2743067Y (en) * | 2004-10-26 | 2005-11-30 | 朱文 | Multiflap hole expansion drill |
| CN102133773A (en) * | 2010-12-10 | 2011-07-27 | 上海康驰建筑技术有限公司 | Reaming method and drilling bit matched therewith |
| CN202627659U (en) * | 2012-04-23 | 2012-12-26 | 安徽盛世高科轨道装备有限公司 | Door with fast unlocking function |
| CN204899504U (en) * | 2015-06-09 | 2015-12-23 | 卢友福 | Bolt for door and window |
| CN106930735A (en) * | 2017-05-02 | 2017-07-07 | 阳泉煤业集团华越机械有限公司 | One kind can open and close type rig screen casing cap |
| CN107214368A (en) * | 2017-08-06 | 2017-09-29 | 葛滨 | A kind of hand-held grooved bit |
Non-Patent Citations (1)
| Title |
|---|
| 赵西安: "《建筑幕墙工程手册 上册》", 31 December 2002 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204082012U (en) | A kind of anchoring-bolt broaching drill bit | |
| CN208350488U (en) | Rock sample preparation device | |
| CN208669212U (en) | The hydraulic wedge deflection tool of welt | |
| CN206693919U (en) | Drill hole of drilling machine reaming bit | |
| CN205497627U (en) | Racket fixing device that punches | |
| CN203050662U (en) | Hydraulic sliding sleeve switch | |
| CN108044804A (en) | A kind of back taper reaming alloy bit | |
| CN208575285U (en) | A kind of bottom screw movable type metal plate borehole drill construction | |
| CN207535102U (en) | A kind of back taper reaming alloy bit | |
| CN103883245B (en) | A kind of hydraulic manual bores | |
| CN205342027U (en) | Be provided with centering sleeve 's metal hole digger | |
| WO2004101943A3 (en) | Underreamer | |
| CN202483446U (en) | Drilling, reaming and centering combined bit | |
| CN108526554B (en) | Front chip dividing groove drill | |
| CN109025875B (en) | Hydraulic differential mechanism with built-in steel balls | |
| CN203756040U (en) | Double-step self-locking blade of reaming-while-drilling device | |
| CN215213552U (en) | Anchor rod with adjusting function | |
| CN206527364U (en) | A kind of drilling tool | |
| CN205154081U (en) | Tail pipe hangs combination and bores stopper instrument | |
| CN204920830U (en) | Prop up variable footpath sleeve pipe centralizer of rod -type | |
| CN203161078U (en) | Self-pressurization well drill | |
| CN206928571U (en) | Metal covering heat insulation decoration integrated plate connecting bolt and wall | |
| CN207526416U (en) | A kind of adjustable fluid pressure type reaming while drilling device of reaming hole outer diameter | |
| CN200949424Y (en) | Hydraulic driving two-way hole expanding device during drilling | |
| CN105178899B (en) | The application of bore hole grappling flushing type dropper and the device in completion construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180518 |
|
| RJ01 | Rejection of invention patent application after publication |