CN111305770B - Five claw slips hydraulic chuck - Google Patents
Five claw slips hydraulic chuck Download PDFInfo
- Publication number
- CN111305770B CN111305770B CN202010132947.3A CN202010132947A CN111305770B CN 111305770 B CN111305770 B CN 111305770B CN 202010132947 A CN202010132947 A CN 202010132947A CN 111305770 B CN111305770 B CN 111305770B
- Authority
- CN
- China
- Prior art keywords
- slip
- chuck
- slip sleeve
- sleeve
- end cover
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a five-jaw slip hydraulic chuck, which comprises a chuck shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively arranged at two end parts of the chuck shell; the chuck is characterized in that a chuck main shaft, a slip arranged in sliding fit with the chuck main shaft, a slip sleeve in sliding fit with the slip and a high-pressure oil cavity mechanism arranged between the slip sleeve and the chuck housing and used for driving the slip sleeve to axially move so as to drive the slip to radially move are arranged in the chuck housing. The five-jaw slip hydraulic chuck of the technical scheme has no rubber sleeve, solves the problem that the rubber sleeve is easy to damage and needs to be replaced frequently in the existing hydraulic rubber sleeve chuck, greatly prolongs the service life of the chuck, ensures the reliability of the power head, and has the advantages of simple structure, high reliability, long service life, large transmission torque and convenience in replacing parts.
Description
Technical Field
The invention relates to the field of drilling machine chucks, in particular to a five-jaw slip hydraulic chuck.
Background
The chucks commonly used for the power head of the hydraulic drilling machine at present comprise a hydraulic rubber sleeve type chuck and a hydraulic disc spring type chuck. The hydraulic rubber sleeve chuck consists of a connecting disc, a front end cover, a rear end cover, a chuck shell, a rubber sleeve, a torque transmission disc, slips, a spring and the like. After high-pressure oil enters the chuck from the main shaft, the high-pressure oil is injected into the sealed cabin through the rear end cover and the oil duct on the shell, hydraulic oil extrudes the rubber sleeve to shrink and push the slips, and then the slips hold the drill rod tightly. When oil is not passed, the rubber sleeve is elastically restored, the spring pushes the slips to open and releases the drill rod.
The existing rubber sleeve hydraulic chuck has the following defects that 1, the rubber sleeve is easy to damage due to frequent movement of the rubber sleeve, the failure rate is high, and all parts are required to be removed for replacing the rubber sleeve, so that the rubber sleeve is very difficult to replace; 2. because the rubber sleeve is made of high-elastic rubber, the rubber is continuously worn and aged fast due to frequent reciprocating movement of the slips; 3. when the slips move, the front and rear torque transmission discs are directly worn on the two end faces, so that the axial clearance of the slip set is increased, the slips can move back and forth in the rubber sleeve, the service life of internal parts is shortened, all parts are required to be removed when the slips are replaced, and the slips are very difficult to replace; 4. because the number of the springs is large, and the springs are high-strength springs, the slips can be folded and put into the torque transmission disc under the action of larger external force, and finally the slips are put into the rubber sleeve, so that a special assembly tool is required. The hydraulic disc spring chuck consists of chuck casing, slip sleeve, slip, chuck piston, slip retainer ring, transition casing, disc spring, sealing part and other parts. The chuck is normally closed, and when high-pressure oil does not exist in the sealing cavity, the disc spring (spring) pushes the chuck piston to drive the slips to move so as to loosen the drill rod. When the sealing cavity is filled with high-pressure oil, the high-pressure hydraulic oil pushes the chuck piston to drive the slips to move so as to clamp the drill rod. The disc spring type hydraulic chuck has the defects that 1, the chuck is of a normally closed type, and the slip is difficult to replace and takes a long time; 2. the chuck cannot be used for a high torque drilling machine because the disc spring is used for pushing the slips to clamp the drill rod and the clamping force of the disc spring is limited.
Therefore, a new five-jaw slip hydraulic chuck is needed to solve the above problems.
Disclosure of Invention
In view of the above, the five-jaw slip hydraulic chuck of the technical scheme has no rubber sleeve, solves the problems that the rubber sleeve is easy to damage and needs to be replaced frequently in the existing hydraulic rubber sleeve chuck, greatly prolongs the service life of the chuck, ensures the reliability of the power head, and has the advantages of simple structure, high reliability, long service life, large transmission torque and convenience in replacing parts.
A five-jaw slip hydraulic chuck comprises a chuck shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively arranged at two end parts of the chuck shell; the chuck is characterized in that a chuck main shaft, a slip arranged in sliding fit with the chuck main shaft, a slip sleeve in sliding fit with the slip and a high-pressure oil cavity mechanism arranged between the slip sleeve and the chuck housing and used for driving the slip sleeve to axially move so as to drive the slip to radially move are arranged in the chuck housing.
Further, the inner surface of the slip sleeve is conical, and the outer surface of the slip is in fit with the inner surface of the slip sleeve.
Further, a plurality of slips installation bar openings are evenly formed in the circumferential direction of the chuck spindle, the slips are installed in the slips installation bar openings in a sliding fit mode along the radial direction of the chuck spindle, and the slips installation bar openings are five in number and are in one-to-one correspondence with the slips installation bar openings.
Further, the slip sleeve comprises a slip sleeve front section, a slip sleeve middle section and a slip sleeve rear section; a first stop block for supporting and positioning the slip sleeve is arranged between the slip sleeve rear section and the chuck main shaft, and a second stop block for supporting and positioning the slip sleeve is arranged between the slip sleeve front section and the chuck main shaft.
Further, the high-pressure oil cavity mechanism comprises a first annular oil cavity formed between the chuck shell and the slip sleeve, a second annular oil cavity formed between the front end cover and the slip sleeve and the chuck shell, a hydraulic control one-way valve arranged on the rear end cover and communicated with the first annular oil cavity, and an oil inlet opening channel arranged on the rear end cover and communicated with the second annular oil cavity.
Further, the end part of the rear end cover is connected with a connecting disc, and a drainage channel communicated with the hydraulic control one-way valve is formed in the connecting disc.
Further, a slip retainer ring for limiting the axial direction of the slip is arranged in the slip installation strip-shaped opening.
Further, the slip sleeve middle section is outwards protruded along the radial direction, a group of first oil seals are arranged between the slip sleeve middle section and the chuck shell, and second oil seals are arranged between the slip sleeve rear section and the chuck shell and between the slip sleeve front section and the front end cover.
Further, dustproof rings are arranged between the first stop block and the chuck main shaft and between the second stop block and the chuck main shaft.
The beneficial effects of the invention are as follows:
(1) The five-jaw hydraulic chuck reduces parts such as a torque transmission disc, a rubber sleeve, a compression ring, a support ring and the like of the traditional rubber sleeve chuck, and reduces the sealing area, thereby improving the reliability of the chuck and prolonging the service life;
(2) The five-jaw hydraulic chuck is connected with the slips by the slip sleeve, the slip sleeve is directly pushed by hydraulic pressure, and the slips are driven by the slip sleeve to clamp and loosen the drill rod, so that the five-jaw hydraulic chuck is simple in structure;
(3) The five-jaw slip disclosed by the invention has the advantages that the main moving parts are the slip sleeve and the slip, the moving parts are fewer, the service lives of other parts are prolonged, and meanwhile, a special tool is not required when the chuck is installed and removed, so that the slip is convenient to replace and maintain;
(4) The five-jaw hydraulic chuck adopts a structure form that a slip sleeve is assembled with five-jaw slips, the slips are driven by the slip sleeve to move together, the slips are uniformly stressed, and a drill rod is not easy to damage.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a D-D cross-sectional view of the present invention.
Detailed Description
FIG. 1 is a cross-sectional view of the present invention; FIG. 2 is a D-D cross-sectional view of the present invention; as shown in the figure, the five-jaw slip hydraulic chuck comprises a chuck shell 13, a front end cover 11 and a rear end cover 18 which are respectively arranged at two end parts of the chuck shell 13, wherein the front end cover 11 is fixedly connected with the chuck shell 13 through bolts 12; the chuck is characterized in that a chuck spindle 14, a slip 15 arranged in sliding fit with the chuck spindle 14, a slip sleeve 16 in sliding fit with the slip 15, and a high-pressure oil cavity mechanism arranged between the slip sleeve 16 and the chuck housing 13 and used for driving the slip sleeve 16 to axially move so as to drive the slip 15 to radially move are arranged in the chuck housing. The five-claw slip hydraulic chuck of the technical scheme has no fittings such as rubber sleeves, solves the problems that the conventional hydraulic sleeve chuck rubber sleeves are easy to damage and the rubber sleeves need to be replaced frequently, greatly prolongs the service life of the chuck, ensures the reliability of the power head, and has the advantages of simple structure, high reliability, long service life, large transmission torque and convenience in replacing parts.
In this embodiment, the inner surface of the slip sleeve 16 is conical, the outer surface of the slip 15 is in form-fitting fit with the inner surface of the slip sleeve 16, the inside of the slip sleeve 16 is in a conical structure, the contact surface of the corresponding slip 15 and the slip sleeve 16 is correspondingly designed into a conical structure, the slip sleeve 16 moves along the axial direction (i.e. the horizontal direction in fig. 1), the slip 15 is driven to reciprocate along the radial direction through the design of the conical surface, the slip 15 is designed into five uniformly distributed along the circumferential direction, the clamping force of the integral structure can be lifted by adopting a five-claw mode, the drill rod cannot shift in the clamping process, the five-claw hydraulic chuck adopts the structural form of the five-claw slip sleeve 16 to assemble the five-claw slip 15, the slip sleeve 16 drives the slip 15 to move together, the slip stress is uniform, the drill rod is not easy to damage, and the service life of a component is prolonged.
In this embodiment, a plurality of slips installation bar openings have evenly been seted up to chuck main shaft 14 circumference direction, slips 15 are installed in slips installation bar opening along chuck main shaft 14 radial direction sliding fit, slips 15 and slips installation bar opening all set up to five and slips 15 and slips installation bar opening one-to-one setting. The slips installation strip-shaped opening of five strip-shaped structures is formed in the circumferential direction of the chuck main shaft 14, the slips are conveniently installed in the slips installation strip-shaped opening, the ends of the slips installation strip-shaped opening are axially limited through the five-jaw retainer ring 10, the five-jaw retainer ring 10 is provided with five strip-shaped check blocks and five slips installation strip-shaped openings to be in fit with each other, the five strip-shaped check blocks of the five-jaw retainer ring 10 are axially inserted into the five strip-shaped openings to achieve limiting, when the slips 15 need to be replaced, the five-jaw retainer ring 10 is only required to be taken out firstly, the slips 15 need to be replaced, the five-jaw slips mainly comprise slip sleeves and slips, the moving parts are fewer, the service lives of other parts are prolonged, special tools are not required during installation and disassembly of the chuck, the slips are convenient to replace, and maintenance is convenient.
In this embodiment, the slip sleeve 16 includes a slip sleeve front section 7, a slip sleeve middle section, and a slip sleeve rear section 6; be provided with between slip cover back end 6 and the chuck main shaft 14 and be used for supporting the first dog of location to slip cover 16, be provided with between slip cover front end 7 and the chuck main shaft 14 and be used for supporting the second dog 8 of location to slip cover 16, through the setting of both ends location dog, the effectual effect of forming the location support to slip cover 16, the both ends of slip cover 16 all are provided with sealed oil blanket 4, for promoting sealed effect, annular structure's mounting groove has been seted up to the dog inner circle, dust ring 9 is installed in the mounting groove embedding, through the setting of dust ring 9 and sealed oil blanket 4, promote leakproofness and inside cleanliness, reduce wearing and tearing granule and enter into inner structure.
In this embodiment, the high-pressure oil cavity mechanism includes a first annular oil cavity E formed between the chuck housing 13 and the slip sleeve 16, a second annular oil cavity F formed between the front end cover 11 and the slip sleeve 16 and the chuck housing 13, a hydraulic control one-way valve 2 disposed on the rear end cover 18 and communicated with the first annular oil cavity E, and an oil inlet opening channel C disposed on the rear end cover 18 and communicated with the second annular oil cavity F, the end portion of the rear end cover 18 is connected with a connecting disc 1, a drainage channel B communicated with the hydraulic control one-way valve 2 is provided on the connecting disc 1, the one-way valve 2 is communicated with the first annular oil cavity E, when the drill rod is required to be clamped, only the one-way valve 2 is required to be opened to inject high-pressure oil into the first annular oil cavity E, when the drill rod is required to be released, a part of hydraulic oil enters the one-way valve 2 from the drainage channel B on the connecting disc to open the valve, and simultaneously, another part of hydraulic oil enters the second annular oil cavity F to push the slip sleeve 16 to move to realize the release motion to the drill rod, and the high-pressure oil in the first annular oil cavity E realizes the backflow.
In this embodiment, the slip sleeve middle section is outwards protruding along radial direction, be provided with a set of first oil blanket 5 between slip sleeve middle section and the chuck shell 13, all be provided with the second oil blanket (i.e. seal oil blanket 4) between slip sleeve back end and the chuck shell and between slip sleeve front end and the front end housing. The slip sleeve middle section is provided with two annular grooves, the annular grooves are used for installing oil seal structures, the protruding portion of the slip sleeve middle section is convenient to form two airtight chambers, and oil in the two chambers is guaranteed not to be communicated with each other through the first oil seal 5.
Working principle:
Clamping a chuck: the high-pressure hydraulic oil enters a high-pressure oil cavity E formed by the chuck shell slip sleeve from the chuck shell oil inlet through the hydraulic control one-way valve 2. The hydraulic oil in the high-pressure oil cavity E pushes the slip sleeve to slide along the axial direction, so that the slip sleeve drives the slip to slide along the axial direction, the contact surface of the slip sleeve and the slip is provided with a certain angle, and when the slip sleeve slides axially, the slip can move radially, so that a drill rod can be clamped. Because the hydraulic control one-way valve is arranged at the position of the oil inlet, hydraulic oil entering the high-pressure cavity E is always in a high-pressure state to clamp the drill rod.
Loosening a chuck: the hydraulic oil enters from the rear end cover B and C at the same time, the hydraulic oil entering from the opening B opens the hydraulic control one-way valve, the hydraulic oil entering from the opening C enters into the high-pressure oil cavity F, the hydraulic oil in the high-pressure oil cavity F pushes the slip sleeve 16 to drive the slip 15 to axially slide (the hydraulic oil in the cavity E flows back to the oil tank), and the slip moves upwards radially, so that the drill rod can be loosened.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A five claw slips hydraulic chuck, its characterized in that: comprises a chuck shell, a front end cover and a rear end cover which are respectively arranged at two ends of the chuck shell; the chuck is characterized in that a chuck main shaft, a slip arranged in sliding fit with the chuck main shaft, a slip sleeve in sliding fit with the slip, and a high-pressure oil cavity mechanism arranged between the slip sleeve and the chuck shell and used for driving the slip sleeve to axially move so as to drive the slip to radially move are arranged in the chuck shell; the inner surface of the slip sleeve is conical, and the outer surface of the slip is in fit with the inner surface of the slip sleeve; the chuck is characterized in that a plurality of slip installation strip-shaped openings are uniformly formed in the circumferential direction of the chuck main shaft, the slips are installed in the slip installation strip-shaped openings in a sliding fit mode along the radial direction of the chuck main shaft, the number of the slips and the number of the slip installation strip-shaped openings are five, and the slips and the slip installation strip-shaped openings are in one-to-one correspondence; the high-pressure oil cavity mechanism comprises a first annular oil cavity formed between the chuck shell and the slip sleeve, a second annular oil cavity formed between the front end cover and the slip sleeve and the chuck shell, a hydraulic control one-way valve arranged on the rear end cover and communicated with the first annular oil cavity, and an oil inlet opening channel arranged on the rear end cover and communicated with the second annular oil cavity.
2. The five-jaw slip hydraulic chuck of claim 1, wherein: the slip sleeve comprises a slip sleeve front section, a slip sleeve middle section and a slip sleeve rear section; a first stop block for supporting and positioning the slip sleeve is arranged between the slip sleeve rear section and the chuck main shaft, and a second stop block for supporting and positioning the slip sleeve is arranged between the slip sleeve front section and the chuck main shaft.
3. The five-jaw slip hydraulic chuck of claim 1, wherein: the end part of the rear end cover is connected with a connecting disc, and a drainage channel communicated with the hydraulic control one-way valve is formed in the connecting disc.
4. The five-jaw slip hydraulic chuck of claim 1, wherein: and a slip retainer ring for axially limiting the slips is arranged in the slip installation strip-shaped opening.
5. The five-jaw slip hydraulic chuck of claim 4, wherein: the slip sleeve middle section is outwards protruded along the radial direction, a group of first oil seals are arranged between the slip sleeve middle section and the chuck shell, and second oil seals are arranged between the slip sleeve rear section and the chuck shell and between the slip sleeve front section and the front end cover.
6. The five-jaw slip hydraulic chuck of claim 2, wherein: dust rings are arranged between the first stop block and the chuck main shaft and between the second stop block and the chuck main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132947.3A CN111305770B (en) | 2020-02-29 | 2020-02-29 | Five claw slips hydraulic chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010132947.3A CN111305770B (en) | 2020-02-29 | 2020-02-29 | Five claw slips hydraulic chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111305770A CN111305770A (en) | 2020-06-19 |
| CN111305770B true CN111305770B (en) | 2024-08-23 |
Family
ID=71158459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010132947.3A Active CN111305770B (en) | 2020-02-29 | 2020-02-29 | Five claw slips hydraulic chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111305770B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211573427U (en) * | 2020-02-29 | 2020-09-25 | 中煤科工集团重庆研究院有限公司 | Hydraulic drill rod chuck |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3349724B2 (en) * | 1992-08-10 | 2002-11-25 | 株式会社北川鉄工所 | Rotary fluid pressure cylinder device for chuck and pressure control method therefor |
| JP3824112B2 (en) * | 1997-07-18 | 2006-09-20 | 古河機械金属株式会社 | Shock absorber of hydraulic striking device |
| US6679503B2 (en) * | 2001-01-11 | 2004-01-20 | Yamazaki Mazak Kabushiki Kaisha | Chuck unit for machine tool |
| CN201448075U (en) * | 2009-06-25 | 2010-05-05 | 江苏省无锡探矿机械总厂有限公司 | Capsule type hydraulic chuck |
| CN102284717B (en) * | 2011-08-26 | 2012-11-28 | 无锡市德胜机械通用件有限公司 | Fast-assembly power chuck |
-
2020
- 2020-02-29 CN CN202010132947.3A patent/CN111305770B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211573427U (en) * | 2020-02-29 | 2020-09-25 | 中煤科工集团重庆研究院有限公司 | Hydraulic drill rod chuck |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111305770A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6732762B2 (en) | Pressure-containing plug for a tubular passageway | |
| CN211573427U (en) | Hydraulic drill rod chuck | |
| CN104594826A (en) | Piston type hydraulic chuck | |
| CN110345064B (en) | Sealing structure of movable intermediate pull rod of drilling pump | |
| CN111305770B (en) | Five claw slips hydraulic chuck | |
| CN108372317A (en) | Electro spindle is driven in one kind | |
| CN112983293B (en) | Quick-connection type water braid | |
| CN108916261B (en) | A jaw type hydraulic clutch | |
| CN214886919U (en) | Non-extrusion sealing gum sleeve type chuck | |
| CN116677310B (en) | Rotary blowout-preventing hydraulic turntable | |
| CN219055293U (en) | Hydraulic clamping and extending device for extrusion blow molding hollow machine | |
| CN108868689B (en) | Tail pipe rubber plug device for removing cement paste in sleeve at lower part of tail pipe well cementation choke ring | |
| CN214743997U (en) | Multi-isolation protection combined sealing water, cyclone adapter and drilling machine | |
| CN204419075U (en) | Piston type hydraulic chuck | |
| CN113123737B (en) | Non-extrusion sealing rubber sleeve type chuck | |
| CN110043202B (en) | Centrifugal slag discharge type radial piston chuck, power head and drilling machine | |
| CN109826582B (en) | Combined type jarring instrument | |
| CN214221120U (en) | Rear clamping assembly of drilling machine | |
| CN205189749U (en) | All -hydraulic drill unit head with biax | |
| CN115383511A (en) | Main shaft bearing lubricating structure and main shaft | |
| CN210264587U (en) | Drill carriage hydraulic chuck for coal mine | |
| CN208900048U (en) | A kind of drilling rod for drilling machine hydraulic clamp | |
| CN219974443U (en) | Colliery drilling rod clamping device | |
| CN119062270B (en) | Rotary blowout preventer while drilling for top drive | |
| US5992537A (en) | Back end connection in a downhole drill |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |