CN214118779U - Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig - Google Patents
Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig Download PDFInfo
- Publication number
- CN214118779U CN214118779U CN202022212059.0U CN202022212059U CN214118779U CN 214118779 U CN214118779 U CN 214118779U CN 202022212059 U CN202022212059 U CN 202022212059U CN 214118779 U CN214118779 U CN 214118779U
- Authority
- CN
- China
- Prior art keywords
- key
- power head
- dovetail
- strip
- keyway
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a dig wear-resisting key strip of dovetail installation formula of rig unit head soon is equipped with the keyway on the inner wall of the cover barrel body, and the unit head key strip is installed to the keyway, is equipped with the dog on the terminal surface of unit head key strip, and the dog is installed on the cover barrel body, and keyway bottom surface width is greater than keyway top surface opening width, and unit head key strip substructure and keyway cooperate, and embedding of unit head key strip lower part is in the keyway. The radial cross section of the key groove is of a dovetail structure, the power head key strip is a dovetail key strip matched with the dovetail key groove, the cross section of the lower portion of the power head key strip is of the dovetail structure, the power head key strip is a wear-resistant key strip made of NM400 materials, the service life is long, the dovetail key groove is embedded to install the dovetail wear-resistant key strip, the working reliability and the service life of the power head key strip are greatly improved, the failure rate is extremely low, and the defects that screws are loosened, the service life is short and later maintenance is difficult due to the fact that fastening screws are fastened originally are avoided.
Description
Technical Field
The utility model relates to an engineering machine tool technical field, concretely relates to dig wear-resisting key strip of dovetail installation formula of rig unit head soon.
Background
The rotary drilling rig has the advantages of high construction efficiency, flexible and convenient operation, good hole forming quality and the like, and becomes a main construction machine for pouring the tubular pile.
The key bar arranged on the driving key sleeve is an important component for transmitting torque output of the rotary drilling rig and is used for transmitting power of a hydraulic system to a drill rod and a drilling bucket. In the prior art, a driving key sleeve cylinder is formed by arranging a rectangular groove on the inner wall and fastening a plurality of key bars arranged on the rectangular groove on the driving key sleeve by using hexagon socket head cap screws, and in the process of transmitting impact torque power, the key bar fastening screws of a power head of a rotary drilling rig are easy to loosen and fall off, and the key bars which need to be replaced cannot be taken out due to the faults of abrasion of bolt heads and the like. The problems of meaningless shutdown repair, difficult replacement, short service life of a power head key bar, unreliable work and the like are caused to customers. The working efficiency of the rotary drilling rig is seriously influenced,
in order to solve the above technical problems, it is necessary to provide a key bar installation manner of a rotary drilling rig power head with an improved structure, so as to overcome the defects in the prior art.
Disclosure of Invention
An object of the utility model is to provide a dig wear-resisting keybar of dovetail installation formula of rig unit head soon, the problem among the prior art has been solved to installation reliability, life-span and the greatly reduced fault rate that can effectual assurance unit head keybar and the wear-resisting keybar that can be quick, simply change.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wear-resisting key strip of dovetail installation formula of rig unit head is dug soon, includes the sleeve body, unit head key strip and dog, be equipped with the keyway on the inner wall of the sleeve body, the unit head key strip is installed to the keyway, be equipped with the dog on the terminal surface of unit head key strip, the dog is installed on the sleeve body, keyway bottom surface width is greater than keyway top surface opening width, and unit head key strip substructure cooperatees with the keyway, embedding of unit head key strip lower part is in the keyway.
Preferably, the stop blocks are welded on the sleeve body, and the stop blocks are arranged at two ends of the power head key strip.
Preferably, at least one end of the key groove extends out of the sleeve body to form an open end, and the power head key strip is installed in the key groove in a mode of being inserted from the open end of the key groove; the stop block is abutted against the end face of the power head key bar.
Preferably, the power head key strips are three, three key grooves are uniformly distributed and processed on the inner surface of the sleeve body, and one power head key strip is mounted in each key groove.
Preferably, one end of the sleeve body is connected with a flange ring.
Preferably, the radial cross section of the key groove is of a dovetail structure, the power head key strip is a dovetail key strip matched with the dovetail key groove, and the cross section of the lower part of the power head key strip is of the dovetail structure.
Preferably, one bottom angle of the key groove is 62 degrees or both bottom angles are 62 degrees, and one bottom angle of the power head key bar is 62 degrees or both bottom angles are 62 degrees.
Preferably, the power head keybar is a wear-resistant keybar made of NM400 material.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a dovetail installation formula wear-resisting key strip of rotary drilling rig unit head, the one end of sleeve barrel body is connected with the flange ring, make things convenient for the sleeve barrel body to install on the power head, the sleeve barrel body undertakes the body of moment of torsion transmission when rotary drilling rig creeps into as the basic component, be equipped with the keyway on the inner wall of sleeve barrel body, thereby make sleeve barrel body and unit head key strip connect into an entirety, the keyway is radial cross section and is dovetail structure, the unit head key strip is dovetail key strip with dovetail keyway matched with, the cross section of unit head key strip lower part is dovetail structure, the unit head key strip is the wear-resisting key strip that adopts NM400 material to make, long service life, after unit head key strip wearing and tearing, can very convenient cutting lower dog, quick replacement unit head key strip, adopt dovetail keyway embedded installation dovetail wear-resisting key strip of dovetail, the operational reliability and the life of key strip have greatly been improved, the failure rate is extremely low, and the defects of screw looseness, low service life and difficult later maintenance caused by fastening by using a fastening screw are overcome.
Drawings
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is a schematic view of the sleeve structure of the present invention;
FIG. 3 is a schematic view of the structure of the key bar of the present invention;
fig. 4 is a schematic view of the stopper structure of the present invention.
In the figure: 1. a sleeve body; 11. a keyway; 12. a flange ring; 2. a power head keybar; 3. and a stop block.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1-4, a dovetail groove-mounted wear-resistant key strip for a power head of a rotary drilling rig comprises a sleeve body 1, a power head key strip 2 and stop blocks 3, wherein one end of the sleeve body 1 is connected with a flange ring 12 to facilitate the installation of the sleeve body 1 on the power head, the sleeve body 1 serves as a basic part to bear a body for torque transmission during drilling of the rotary drilling rig, a key groove 11 is formed in the inner wall of the sleeve body 1 to enable the sleeve body 1 and the power head key strip 2 to be connected into a whole, the radial cross section of the key groove 11 is of a dovetail structure, the power head key strip 2 is of a dovetail key strip matched with the dovetail key groove 11, the cross section of the lower part of the power head key strip 2 is of the dovetail structure, dovetail key grooves 11 distributed in a trisection of 120 degrees are formed in the inner circular surface of the sleeve body 1, the dovetail wear-resistant key strip is embedded into the key groove 11 formed in the sleeve body 1 from the end surface of the sleeve body 1, two ends of the dovetail key strip are welded in the key groove 11 by the stop blocks 3 to fix the power head key strip 2, the power head key strip 2 is prevented from moving axially, the dovetail type key groove 11 can preferably adopt a 62-degree angle groove (one bottom angle of the key groove 11 is preferably 62 degrees or two bottom angles are preferably 62 degrees), one bottom angle of the power head key strip 2 (adjacent to the 62 degrees of the key groove 11) is preferably 62 degrees or two bottom angles are preferably 62 degrees, at least one end of the key groove 11 extends out of the sleeve body 1 to form an open end, the power head key strip 2 is installed in the key groove 11 in a mode of being inserted from the open end of the key groove 11, the power head key strip 2 is an abrasion-resistant key strip made of NM400 materials, the service life is long, the number of the power head key strips 2 is three, three key grooves 11 are uniformly distributed and processed on the inner surface of the sleeve body 1, one key strip 2 is installed in each key groove 11, the stop block 3 abuts against the end surface of the power head key strip 2, the key grooves 11 are provided with the power head key strips 2, be equipped with dog 3 on the terminal surface of unit head key strip 2, carry out axial positioning to unit head key strip 2, dog 3 welds on the cover barrel 1, unit head key strip 2 both ends all are provided with dog 3, dog 3 installs on the cover barrel 1, keyway 11 bottom surface width is greater than keyway 11 top surface opening width, 2 substructure of unit head key strip cooperatees with keyway 11, install cover barrel 1 on the power head with flange ring 12, the unit head operation drives the operation of cover barrel 1, thereby 2 conveying torsion of unit head key strip in the cover barrel 1 accomplish drilling work.
After power head keybar 2 wearing and tearing, dog 3 under the cutting that can be very convenient, quick replacement power head keybar 2, dig rig power head drive key cover soon and when changing power head keybar 2, dog 3 can adopt the cutting grinding wheel piece to take out fast with the mode of cutting, can be very convenient take out old power head keybar 2 after cutting dog 3, imbed new power head keybar 2 again, then weld dog 3 again, thereby reach quick replacement's purpose, the utility model discloses a power head keybar 2 does not need bolted connection, adopts the embedded wear-resisting keybar of installation dovetail keyway 11, very big improvement power head keybar 2's operational reliability and life, the fault rate is extremely low, has stopped originally to utilize the screw that fastening caused not hard up, low-lived, the drawback of later maintenance difficulty.
The working principle is as follows: the radial cross section of the key groove 11 is of a dovetail structure, the power head key strip 2 is of a dovetail key strip matched with the dovetail key groove 11, the cross section of the lower part of the power head key strip 2 is of a dovetail structure, the inner circular surface of the sleeve body 1 is provided with the dovetail key grooves 11 distributed in three equal parts of 120 degrees, the dovetail wear-resistant key strips are embedded into the key grooves 11 arranged on the sleeve body 1 from the end surface of the sleeve body 1, the two ends of the dovetail wear-resistant key strips are welded in the key grooves 11 by using the stoppers 3 to fix the power head key strips 2, the dovetail key grooves 11 preferably adopt 62-degree angle grooves (one bottom angle of the key grooves 11 is preferably 62 degrees or two bottom angles are preferably 62 degrees), one bottom angle of the power head key strips 2 (adjacent to the 62-degree angle of the key grooves 11) is preferably 62 degrees or two bottom angles are preferably 62 degrees, the sleeve body 1 is arranged on the power head by using the flange ring 12, the power head operates to drive the sleeve body 1 to operate, and the power head key strip 2 in the sleeve body 1 transmits torque force to complete drilling work.
In summary, the following steps: the utility model discloses a dovetail installation formula wear-resisting key strip of rotary drilling rig unit head, the one end of sleeve body 1 is connected with flange ring 12, make things convenient for sleeve body 1 to install on the power head, sleeve body 1 undertakes the body that the moment of torsion was transmitted when rotary drilling rig was crept as the basic component, be equipped with keyway 11 on the inner wall of sleeve body 1, thereby make sleeve body 1 and unit head key strip 2 connect into an entirety, keyway 11 along radial cross section be dovetail structure, unit head key strip 2 is dovetail key strip that matches with dovetail keyway 11, the cross section of unit head key strip 2 lower part is dovetail structure, unit head key strip 2 is the wear-resisting key strip that adopts NM400 material to make, long service life, after unit head key strip 2 wears away, can be very convenient cutting lower dog 3, quick replacement unit head key strip 2, can be very convenient take out old unit head key strip 2 after cutting off dog 3, imbed new unit head key strip 2 again, then weld dog 3 again, thereby reach quick replacement's purpose, very big improvement unit head key strip 2's operational reliability and life, the fault rate is extremely low, it is not hard up originally to have stopped the screw that utilizes the fastening screw fastening to cause, low service life, the drawback of later maintenance difficulty, install sleeve body 1 on the power head with flange ring 12, the unit head operation drives sleeve body 1 operation, thereby 2 conveying torsion of unit head key strip in the sleeve body 1 accomplish drilling work.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a wear-resisting key strip of dovetail installation formula of rig unit head is dug soon, includes sleeve body (1), unit head key strip (2) and dog (3), its characterized in that: be equipped with keyway (11) on the inner wall of the cover barrel body (1), unit head keybar (2) are installed in keyway (11), be equipped with dog (3) on the terminal surface of unit head keybar (2), install on cover barrel body (1) dog (3), keyway (11) bottom surface width is greater than keyway (11) top surface opening width, and unit head keybar (2) substructure cooperatees with keyway (11), embedding of unit head keybar (2) lower part is in keyway (11).
2. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: the stop blocks (3) are welded on the sleeve body (1), and the stop blocks (3) are arranged at the two ends of the power head key bar (2).
3. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: at least one end of the key groove (11) extends to the outside of the sleeve body (1) and is an open end, and the power head key strip (2) is installed in the key groove (11) in a mode of being inserted from the open end of the key groove (11); the stop block (3) is abutted against the end surface of the power head key bar (2).
4. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: the power head key strips (2) are three, three key grooves (11) are uniformly distributed and processed on the inner surface of the sleeve body (1), and one power head key strip (2) is mounted in each key groove (11).
5. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: one end of the sleeve body (1) is connected with a flange ring (12).
6. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: the radial cross section of the key groove (11) is of a dovetail structure, the power head key strip (2) is of a dovetail structure matched with the dovetail key groove (11), and the cross section of the lower part of the power head key strip (2) is of a dovetail structure.
7. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: one bottom angle of the key groove (11) is 62 degrees or two bottom angles are 62 degrees, one bottom angle of the power head key strip (2) is 62 degrees or two bottom angles are 62 degrees.
8. The dovetail groove mounting type wear-resistant key bar of the rotary drilling rig power head according to claim 1, characterized in that: the power head key bar (2) is a wear-resistant key bar made of NM400 materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022212059.0U CN214118779U (en) | 2020-10-05 | 2020-10-05 | Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022212059.0U CN214118779U (en) | 2020-10-05 | 2020-10-05 | Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214118779U true CN214118779U (en) | 2021-09-03 |
Family
ID=77497668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022212059.0U Active CN214118779U (en) | 2020-10-05 | 2020-10-05 | Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214118779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320179A (en) * | 2022-01-06 | 2022-04-12 | 恒天九五重工有限公司 | Power head driving key sleeve device and rotary drilling rig power head |
-
2020
- 2020-10-05 CN CN202022212059.0U patent/CN214118779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320179A (en) * | 2022-01-06 | 2022-04-12 | 恒天九五重工有限公司 | Power head driving key sleeve device and rotary drilling rig power head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214118779U (en) | Dovetail groove installation type wear-resistant key bar of power head of rotary drilling rig | |
| CN202300207U (en) | Novel replaceable cutter wing reamer | |
| US11555351B2 (en) | Spiral impact drilling machine applicable to rock and soil and construction method | |
| CN111706345B (en) | Cutter fixing device of shield machine | |
| CN100575656C (en) | Full-hydraulic multifunctional driller for gas extraction, drainage and discharge | |
| CN112832686A (en) | Quick-change roller bit and rotary drilling rig | |
| CN110295919B (en) | Cutter holder structure for mounting hob | |
| CN205370454U (en) | Drill bit can be replaced to quick detach | |
| CN112064709A (en) | Combined rock breaking cutter head structure | |
| CN108825257B (en) | Heading machine and super-digging cutter thereof | |
| CN201013228Y (en) | Fully-hydraulic gas drainage multi-use drill | |
| CN106150385A (en) | A kind of changeable type rock bit system | |
| CN212508172U (en) | Coring bit convenient to change wear-resisting material | |
| CN208437869U (en) | A kind of helicoid hydraulic motor welded type positioning sleeve | |
| CN215718491U (en) | High-efficient PDC cover milling head | |
| AU2013100099B4 (en) | Improved cradle coupling for rock drill | |
| CN219887982U (en) | Rotary drilling bottom plate for drill bit and rotary drilling bit using same | |
| CN214576769U (en) | Mounting structure of ready-package gear wheel engineering drill bit | |
| CN216477154U (en) | Power head assembly of rotary drilling rig capable of coring by rope | |
| CN216381268U (en) | Roller bit rig hydraulic chuck base fixing device | |
| CN217872677U (en) | Down-the-hole drill bit | |
| CN109162639A (en) | A kind of combined drilling tool system of multiple rows of cinder notch large-size drill | |
| CN213807660U (en) | Coal mining machine planetary reducer with bolt outlet groove | |
| CN217206456U (en) | Wear-resistant plate structure for shield machine | |
| CN219672588U (en) | Rib drill rod with good slag discharging effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |