CN202467712U - Nitrogen spring type hydraulic chuck - Google Patents
Nitrogen spring type hydraulic chuck Download PDFInfo
- Publication number
- CN202467712U CN202467712U CN2012200195453U CN201220019545U CN202467712U CN 202467712 U CN202467712 U CN 202467712U CN 2012200195453 U CN2012200195453 U CN 2012200195453U CN 201220019545 U CN201220019545 U CN 201220019545U CN 202467712 U CN202467712 U CN 202467712U
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- China
- Prior art keywords
- chuck
- nitrogen spring
- piston
- slip spider
- piston rod
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Abstract
The utility model relates to a nitrogen spring type hydraulic chuck, in particular to a drilling tool for clamping a drilling machine, and belongs to the technical field of drilling machines. The hydraulic chuck mainly comprises piston rods, pistons, cylinder barrels, an upper chuck shell, slip seats, spring seats, nitrogen springs and slips, wherein the piston rods are arranged on the upper chuck shell, each cylinder is sleeved on the outer ring of a piston rod, each piston is positioned in a piston cavity between each piston rod and each cylinder barrel, the slip seats are arranged on the piston rods and the inner ring of the upper chuck shell, and the spring seats are fixed on the lower flange end faces of the slip seats; and the lower ends of the nitrogen springs are fixed on the spring seats. The hydraulic chuck is simple, compact and reasonable in structure; nitrogen is used as an elastic element of the chuck, so that the chuck is low in elasticity change and stable in performance; the nitrogen springs are long in service lives and convenient to detach, replace and maintain; all-process control of hydraulic pressure is realized in an oil passage; clamping and loosening of the drilling tool are completely controlled by the hydraulic pressure; and through the bevel structures of the slips, an axial force is converted into a radial force, so that the clamping force of the chuck is increased.
Description
Technical field
The utility model relates to a kind of nitrogen spring formula oild chuck, specifically is used to clamp the drilling tool of rig, belongs to the rig field of mechanical technique.
Background technology
During rig work, its chuck is used for clamping drilling tool.Traditional chuck of rig inside is many group spring assemblies, clamps drilling tool by spring force, to drilling tool transfer torque and axial force, accomplishes the boring action through chuck.The inner stressed complicacy of traditional chuck only just can be rotated motion when clamping drilling rod, wait part otherwise very easily burn out a bearing, and is difficult to simultaneously realize that the whole process of hydraulic pressure in the chuck controls.Though the oild chuck of capsule-type structure has remedied the deficiency of above-mentioned traditional structure, fully by means of hydraulic clamp, unclamp drilling rod, and can realize the whole process control of hydraulic circuit, further improved automaticity.But the inner rubber material that adopts of the oild chuck of capsule-type structure in use is squeezed and damages easily, and the life-span is short and change trouble, and cost is big.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned weak point; Thereby a kind of nitrogen spring formula oild chuck is provided; Can be to the omnidistance control of internal hydraulic pressure, the ramp structure through slips converts axial force to radial load, realizes that finally hydraulic control clamps, unclamps drilling tool.
The technical scheme that provides according to the utility model; Nitrogen spring formula oild chuck mainly comprises piston rod, piston, cylinder barrel and chuck upper casing; Said piston rod is installed on the chuck upper casing through packing ring and bolt, and said cylinder barrel is sleeved on the piston rod outer ring, in the plunger shaft of said piston between piston rod and cylinder barrel; Piston is fixed on the piston rod through the first card key; Said slip spider, spring base, nitrogen spring and the slips of also comprising, said piston rod and chuck upper casing inner ring are installed slip spider, pass through packing ring and screw spring base on the said slip spider lower flange end face; Said nitrogen spring lower end through packing ring and screw on spring base; Be provided with first pressing plate between said chuck upper casing and the slip spider, said first pressing plate is installed in the nitrogen spring upper end; Said slip spider upper end suit collar is installed bearing between said collar and the chuck upper casing; Be provided with the second card key between said first pressing plate and the bearing, the second card key is installed on the collar; Said slip spider upper side is provided with slips, and said slips connects second pressing plate through screw; Said slip spider upper end is through packing ring and bolt fairlead, and dust cap is installed in the fairlead upper end.
Suit shelves dirt cover on the said slip spider, the flange through dirt-proof boot is installed between first pressing plate and the collar.Said chuck upper casing is provided with lubricating cup.Said cylinder barrel is provided with oil inlet and outlet, field joint body on the oil inlet and outlet.The inner ring of said piston and outer ring are provided with the O RunddichtringO.The XY profile shaft is installed in the said dust cap is used dust ring.Said fairlead outer end suit protective cover, the lower end of protective cover is fixed on the cylinder barrel through screw and packing ring.Connecting key is installed in said slip spider lower end.Said cylinder barrel inner ring is provided with the O RunddichtringO.Between said collar and the chuck upper casing oil sealing is installed.
Compared with present technology the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Adopt nitrogen as the chuck flexible member, good resiliency characteristics curve can be provided, elastic force covariant deformationization is very little, stable performance; The nitrogen spring long service life can reach 10000 frequencys, changes easy to maintenancely, and nitrogen can fill; Hydraulic pressure has been realized omnidistance control in the oil circuit; The clamping of drilling tool and unclamping fully by hydraulic control; Ramp structure through slips converts axial force to radial load, and the chucking power of chuck increases.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Following the utility model will combine the embodiment in the accompanying drawing to further describe:
The utility model mainly comprises piston rod 3, piston 5, cylinder barrel 6 and chuck upper casing 24; Said piston rod 3 is installed on the chuck upper casing 24 through packing ring 25 and bolt 26; Said cylinder barrel 6 is sleeved on piston rod 3 outer rings; In the plunger shaft of said piston 5 between piston rod 3 and cylinder barrel 6, piston 5 is fixed on the piston rod 3 said slip spider 1, spring base 2, nitrogen spring 7 and the slips 10 of also comprising through the first card key 4; Said piston rod 3 is installed slip spider 1 with chuck upper casing 24 inner rings, passes through packing ring 34 and screw 35 fixing spring seats 2 on the said slip spider 1 lower flange end face; Said nitrogen spring 7 lower ends are fixed on the spring base 2 through packing ring 32 and screw 33; Be provided with first pressing plate 8 between said chuck upper casing 24 and the slip spider 1, said first pressing plate 8 is installed in nitrogen spring 7 upper ends; Said slip spider 1 upper end suit collar 11 is installed bearing 22 between said collar 11 and the chuck upper casing 24; Being provided with the second card key, 9, the second card keys 9 between said first pressing plate 8 and the bearing 22 is installed on the collar 11; Said slip spider 1 upper side is provided with slips 10, and said slips 10 connects second pressing plate 15 through screw 13; Said slip spider 1 upper end is through packing ring 19 and bolt 20 fixed guide cover 16, and dust cap 17 is installed in fairlead 16 upper ends.
Suit shelves dirt cover 23 on the said slip spider 1, and the flange through dirt-proof boot 23 is installed between first pressing plate 8 and the collar 11.Said chuck upper casing 24 is provided with lubricating cup 12.Said cylinder barrel 6 is provided with oil inlet and outlet, field joint body 30 on the oil inlet and outlet.The inner ring of said piston 5 and outer ring are provided with O RunddichtringO 31.The XY profile shaft is installed with dust ring 18 in the said dust cap 17.Said fairlead 16 outer end suit protective covers 14, the lower end of protective cover 14 is fixed on the cylinder barrel 6 through screw 28 and packing ring 29.Connecting key 36 is installed in said slip spider 1 lower end.Said cylinder barrel 6 inner rings are provided with O RunddichtringO 27.Oil sealing 21 is installed between said collar 11 and the chuck upper casing 24.
The operating principle of the utility model is: control hydraulic oil through the rig control module, hydraulic oil goes out from hydraulic fluid port, and piston 5 drives piston rod 3 and goes upward to the extreme higher position; Nitrogen spring 7 unclamps gradually and is in the nature deployed condition; First pressing plate 8 receives piston rod 3 to promote to drive collar 11 and slips 10 moves upward, because slips 10 is a ramp structure with collar 11 junctions, the upper end of slips 10 is limited again; So slips 10 is inwardly axle motion just, slips 10 has just clamped drilling tool like this.Control hydraulic oil gets into from oil-in, and it is descending to promote piston 5 drive piston rods 3, and further chuck upper casing 24 moves down, and first pressing plate 8 is depressed nitrogen spring 7, and this moment, collar 11 down moved, and slips 10 outwards unclamps, thereby unclamps drilling tool.
Claims (10)
1. nitrogen spring formula oild chuck; Comprise piston rod (3), piston (5), cylinder barrel (6) and chuck upper casing (24); Said piston rod (3) is installed on the chuck upper casing (24) through packing ring (25) and bolt (26); Said cylinder barrel (6) is sleeved on piston rod (3) outer ring; Said piston (5) is positioned at the plunger shaft between piston rod (3) and the cylinder barrel (6), and piston (5) is fixed on the piston rod (3) through the first card key (4), it is characterized in that: also comprise slip spider (1), spring base (2), nitrogen spring (7) and slips (10); Said piston rod (3) and chuck upper casing (24) inner ring are installed slip spider (1), pass through packing ring (34) and screw (35) fixing spring seat (2) on said slip spider (1) the lower flange end face; Said nitrogen spring (7) lower end is fixed on the spring base (2) through packing ring (32) and screw (33); Be provided with first pressing plate (8) between said chuck upper casing (24) and the slip spider (1), said first pressing plate (8) is installed in nitrogen spring (7) upper end; Said slip spider (1) upper end suit collar (11) is installed bearing (22) between said collar (11) and the chuck upper casing (24); Be provided with the second card key (9) between said first pressing plate (8) and the bearing (22), the second card key (9) is installed on the collar (11); Said slip spider (1) upper side is provided with slips (10), and said slips (10) connects second pressing plate (15) through screw (13); Said slip spider (1) upper end is through packing ring (19) and bolt (20) fixed guide cover (16), and dust cap (17) is installed in fairlead (16) upper end.
2. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: said slip spider (1) is gone up suit shelves dirt cover (23), and the flange through dirt-proof boot (23) is installed between first pressing plate (8) and the collar (11).
3. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: said chuck upper casing (24) is provided with lubricating cup (12).
4. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: said cylinder barrel (6) is provided with oil inlet and outlet, field joint body (30) on the oil inlet and outlet.
5. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: the inner ring of said piston (5) and outer ring are provided with O RunddichtringO (31).
6. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: the interior installation shaft of said dust cap (17) is with dust ring (18).
7. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: said fairlead (16) outer end suit protective cover (14), the lower end of protective cover (14) is fixed on the cylinder barrel (6) through screw (28) and packing ring (29).
8. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: connecting key (36) is installed in said slip spider (1) lower end.
9. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: said cylinder barrel (6) inner ring is provided with O RunddichtringO (27).
10. nitrogen spring formula oild chuck as claimed in claim 1 is characterized in that: between said collar (11) and the chuck upper casing (24) oil sealing (21) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200195453U CN202467712U (en) | 2012-01-17 | 2012-01-17 | Nitrogen spring type hydraulic chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200195453U CN202467712U (en) | 2012-01-17 | 2012-01-17 | Nitrogen spring type hydraulic chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467712U true CN202467712U (en) | 2012-10-03 |
Family
ID=46915878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200195453U Expired - Lifetime CN202467712U (en) | 2012-01-17 | 2012-01-17 | Nitrogen spring type hydraulic chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467712U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434116A (en) * | 2012-01-17 | 2012-05-02 | 江苏省无锡探矿机械总厂有限公司 | Nitrogen spring type hydraulic chuck |
| CN102900384A (en) * | 2012-10-19 | 2013-01-30 | 徐州五洋科技股份有限公司 | Normally-closed hydraulic chuck for coalmine driller |
| CN104929538A (en) * | 2015-06-29 | 2015-09-23 | 陈军民 | Novel drilling rig chuck and application method |
| CN105134106A (en) * | 2015-08-18 | 2015-12-09 | 安徽贝利机械制造有限公司 | Automatic centering hydraulic chuck device for core drills |
| CN110344778A (en) * | 2019-07-11 | 2019-10-18 | 西安宇星石油机械新技术开发有限公司 | Workover treatment rotary chuck |
-
2012
- 2012-01-17 CN CN2012200195453U patent/CN202467712U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434116A (en) * | 2012-01-17 | 2012-05-02 | 江苏省无锡探矿机械总厂有限公司 | Nitrogen spring type hydraulic chuck |
| CN102900384A (en) * | 2012-10-19 | 2013-01-30 | 徐州五洋科技股份有限公司 | Normally-closed hydraulic chuck for coalmine driller |
| CN102900384B (en) * | 2012-10-19 | 2015-05-06 | 徐州五洋科技股份有限公司 | Normally-closed hydraulic chuck for coalmine driller |
| CN104929538A (en) * | 2015-06-29 | 2015-09-23 | 陈军民 | Novel drilling rig chuck and application method |
| CN105134106A (en) * | 2015-08-18 | 2015-12-09 | 安徽贝利机械制造有限公司 | Automatic centering hydraulic chuck device for core drills |
| CN110344778A (en) * | 2019-07-11 | 2019-10-18 | 西安宇星石油机械新技术开发有限公司 | Workover treatment rotary chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |