CN203702032U - Hydraulic chuck of core drilling machine - Google Patents

Hydraulic chuck of core drilling machine Download PDF

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Publication number
CN203702032U
CN203702032U CN201420088063.2U CN201420088063U CN203702032U CN 203702032 U CN203702032 U CN 203702032U CN 201420088063 U CN201420088063 U CN 201420088063U CN 203702032 U CN203702032 U CN 203702032U
Authority
CN
China
Prior art keywords
chuck
cylinder
slip
slips
piston
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.)
Expired - Fee Related
Application number
CN201420088063.2U
Other languages
Chinese (zh)
Inventor
周亚军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
H.H. DRILL-TECH DRILLING MACHINERY CO., LTD.
Original Assignee
LIANYUNGANG HUANGHAI MACHINERY CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LIANYUNGANG HUANGHAI MACHINERY CO Ltd filed Critical LIANYUNGANG HUANGHAI MACHINERY CO Ltd
Priority to CN201420088063.2U priority Critical patent/CN203702032U/en
Application granted granted Critical
Publication of CN203702032U publication Critical patent/CN203702032U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a hydraulic chuck of a core drilling machine. The hydraulic chuck of the core drilling machine comprises a slip recess which sleeves a drilling machine spindle, a slip component for clamping a drill rod is mounted at the upper part of the slip recess, a disc spring is mounted between the bottom of the slip component and the bottom step of the slip recess, and a chuck cylinder sleeves the slip component; a hydraulic oil enclosing cavity is mounted between a piston and the chuck cylinder body, a Y-shaped sealing ring for shaft is mounted above the hydraulic oil enclosing cavity, and a Y-shaped sealing ring for hole is mounted under the hydraulic oil enclosing cavity. By means of the slip on the slip recess and slip alloy arranged on the slip, the clamp area is increased, the friction force and the friction torque acted on the drill rod are increased, and accordingly the lifting ability for clamping the drill rod is improved; by means of the Y-shaped sealing ring for shaft above the hydraulic oil enclosing cavity and the Y-shaped sealing ring for hole under the hydraulic oil enclosing cavity, the sealing is more reliable and stable, the stress on each sealing ring is uniform, and the service life of each sealing ring is prolonged.

Description

A kind of hydraulic chuck for core drilling machines
Technical field
The utility model relates to a kind of geotechnical boring equipment, particularly a kind of hydraulic chuck for core drilling machines.
Background technology
Oild chuck is an independent vitals of geological prospecting rock-core borer, its major function is drilling rod on clamping machine, transmitting torque and axial force, and its existing clamping part is mainly take 3 clamping oild chucks of large butterfly spring as main, along with continuing to increase of rig depth of exploration in recent years, part medium-length hole rock-core borer is to oild chuck holding drill pipe, the requirement that promotes drilling tool ability is more and more higher, and in design completely by increasing the thickness of butterfly spring, in order to increase elastic force, to meet the requirement of oild chuck clamping force unrealistic, moreover the blocked up meeting of the thickness of butterfly spring is risen manufacture difficulty and cost news speed, simultaneously in the time that system rated pressure does not become, the reinforcement of balancing spring force will make oil cylinder cylinder diameter constantly increase, thereupon chuck appearance and size once also will directly affect the stability of rotary body greatly.
Summary of the invention
The technical problems to be solved in the utility model is for the deficiencies in the prior art, proposes a kind of simple in structure, convenient disassembly, can improve the hydraulic chuck for core drilling machines that adds the ability of holding.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of hydraulic chuck for core drilling machines, comprise the slip spider being sleeved on rig mandrel, be provided with the slip assemblies of holding drill pipe on the top of slip spider, between the bottom of slip assemblies and the bottom step of slip spider, disk spring is installed, be set with chuck oil cylinder outward in slip assemblies, chuck oil cylinder comprises the cylinder body fixing with oild chuck case and the piston sliding up and down along inboard wall of cylinder block, between piston and slip assemblies, thrust ball bearing is installed, be characterized in: described slip assemblies comprises 5 slips that are circumferentially evenly distributed on slip spider and is sleeved on the collar outside slips, slips lateral surface and collar join and contact surface and axis are obliquely installed and form the conical surface wide at the top and narrow at the bottom, the angle forming between the conical surface and horizontal plane is 75 °-85 °, described slips medial surface is set to the intrados coordinating with mandrel periphery, on intrados, be provided with two groups of vertical slips alloys that arrange, on same slips intrados, the center line of two groups of slips alloys and the angle of mandrel center line are 20 °-28 °, between described piston and the cylinder body of chuck oil cylinder, be provided with hydraulic oil sealing chamber, above hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with axle y-type seal ring, axle is with being provided with and reducing the upper support ring that frictional resistance is used between the top piston of y-type seal ring and the cylinder body of chuck oil cylinder, below hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with hole y-type seal ring, hole is with being provided with and reducing the lower support ring that frictional resistance is used between the below piston of y-type seal ring and the cylinder body of chuck oil cylinder.
The technical problems to be solved in the utility model can also be come further to realize by the following technical programs, is provided with the pump nozzle communicating with hydraulic oil sealing chamber on chuck oil cylinder.
Compared with prior art, the utility model utilization is circumferentially evenly distributed on 5 slips on slip spider and is arranged on two groups of slips alloys on slips intrados, increase holding area and acted on frictional force and the frictional force moment of drilling rod, thereby increased the hoisting power of holding drill pipe; Utilization is arranged at the axle y-type seal ring above hydraulic oil sealing chamber and the hole y-type seal ring being arranged on below hydraulic oil sealing chamber, makes sealing more reliable, stable, has guaranteed the stressed even of sealing ring, has extended its application life.The utility model is simple in structure, reasonable in design, easy accessibility, has improved the ability of holding drill pipe, has strengthened the performance of rig.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.
The specific embodiment
A kind of hydraulic chuck for core drilling machines, comprise the slip spider 1 being sleeved on rig mandrel, be provided with the slip assemblies of holding drill pipe on the top of slip spider 1, between the bottom of slip assemblies and the bottom step of slip spider 1, disk spring 4 is installed, be set with chuck oil cylinder outward in slip assemblies, chuck oil cylinder comprises the cylinder body 2 fixing with oild chuck case 8 and the piston 3 sliding up and down along inboard wall of cylinder block, thrust ball bearing 5 is installed between piston 3 and slip assemblies, described slip assemblies comprises 5 slips 7 that are circumferentially evenly distributed on slip spider 1 and is sleeved on the collar 6 outside slips 7, slips 7 lateral surfaces and collar 6 join and contact surface and axis are obliquely installed and form the conical surface wide at the top and narrow at the bottom, the angle forming between the conical surface and horizontal plane is 75 °-85 °, described slips medial surface is set to the intrados coordinating with mandrel periphery, on intrados, be provided with two groups of vertical slips alloys 13 that arrange, on same slips intrados, the center line of two groups of slips alloys 13 and the angle of mandrel center line are 20 °-28 °, between described piston 3 and the cylinder body 2 of chuck oil cylinder, be provided with hydraulic oil sealing chamber, above hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with y-type seal ring 10 for axle, axle is with being provided with and reducing the upper support ring 9 that frictional resistance is used between the top piston of y-type seal ring 10 and the cylinder body of chuck oil cylinder, below hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with y-type seal ring 11 for hole, hole is with being provided with and reducing the lower support ring 12 that frictional resistance is used between the below piston of y-type seal ring 11 and the cylinder body of chuck oil cylinder.Chuck oil cylinder is provided with the pump nozzle communicating with hydraulic oil sealing chamber.Cylinder body 2 materials of described chuck oil cylinder are 45 forging, rough annealing, and modifier treatment after roughing, half essence, fine finishining are shaped, and two step cylinder diameter coaxiality errors are not more than φ 0.05mm, and cylindricity is less than 0.01mm; Described piston 3 materials are 45 forging, and rough annealing is modified after roughing, and half essence, fine finishining are shaped, and two step outer circles errors are not more than φ 0.03mm, outside piston plating hard chromium on surface fine grinding, and after mill, cylindricity is less than 0.01mm; Described slip spider 1 material is 35CrMo forging, modified after roughing, and half essence, fine finishining are shaped, and when processing five groove (can consider to increase heat setting operation), answers the reducing distortion of control flume end; Described collar 6 is five groove collars, and five groove collars are 45 forging blanks, modifier treatment after roughing, and point Roughing and fine machining is shaped, and five place's surface grooves should be consistent to the size of reference center, and groove width is not more than 0.08mm to the symmetry of reference center; Described butterfly spring 4 materials are 60Si2MnA.
Described slips 7 numbers are set to five, make the slip spider of horizontal support slips need to redesign, slip groove is pressed circumference five deciles, consider the convenience of the factors such as part outside diameter, intensity and slips mounting or dismounting, groove width slightly reduces, but do not affect the overall increase of be installed watt holding drill pipe area, and the increase of holding area means that clamping ability will promote.The actuating member that collar moves horizontally as slips, in the time that collar moves down, five slips are outwards motion simultaneously, while moving on disk spring resets promotion collar, slips centripetal contraction simultaneously.Consider guiding when piston moves up and down and reduce and the cylinder body of chuck oil cylinder between the frictional resistance that produces, special increase wear-resisting, sliding all good material polytetrafluoroethylene (PTFE) be upper and lower support ring, when work, support ring contacts with cylinder bore with outside piston, the one, steering capability is good, the 2nd, when piston moves, frictional resistance is little, and seal loading is even simultaneously, long service life, for this chuck, seal stable, be reliably the necessary guarantee of performance boost.
Major function action of the present utility model is: hydraulic unlock, disk spring clamps.The principle of unclamping in the time of work is: hydraulic oil enters hydraulic oil sealing chamber, along with the rising of pressure, downward active force overcomes disk-shaped spring elasticity to be promoted piston and drives thrust ball bearing, collar to move down together, now disk spring is compressed, collar drives slips to leave the horizontal movement in the center of circle in moving down, thereby reaches the object of unclamping drilling rod; Clamping the principle of drilling rod is: reversing valve operated hydraulic control one-way valve is opened, the fluid in hydraulic oil sealing chamber communicates with fuel tank through oil pipe, hydraulic control one-way valve and reversal valve, now hydraulic oil sealing chamber off-load, pressure is zero, disk spring, under the effect of elastic force, automatically resets, and promotes collar and piston moves up, drive slips to do the horizontal movement of centripetal contraction, thereby reach the object that clamps drilling rod.

Claims (2)

1. a hydraulic chuck for core drilling machines, comprise the slip spider being sleeved on rig mandrel, be provided with the slip assemblies of holding drill pipe on the top of slip spider, between the bottom of slip assemblies and the bottom step of slip spider, disk spring is installed, be set with chuck oil cylinder outward in slip assemblies, chuck oil cylinder comprises the cylinder body fixing with oild chuck case and the piston sliding up and down along inboard wall of cylinder block, between piston and slip assemblies, thrust ball bearing is installed, it is characterized in that: described slip assemblies comprises 5 slips that are circumferentially evenly distributed on slip spider and is sleeved on the collar outside slips, slips lateral surface and collar join and contact surface and axis are obliquely installed and form the conical surface wide at the top and narrow at the bottom, the angle forming between the conical surface and horizontal plane is 75 °-85 °, described slips medial surface is set to the intrados coordinating with mandrel periphery, on intrados, be provided with two groups of vertical slips alloys that arrange, on same slips intrados, the center line of two groups of slips alloys and the angle of mandrel center line are 20 °-28 °, between described piston and the cylinder body of chuck oil cylinder, be provided with hydraulic oil sealing chamber, above hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with axle y-type seal ring, axle is with being provided with and reducing the upper support ring that frictional resistance is used between the top piston of y-type seal ring and the cylinder body of chuck oil cylinder, below hydraulic oil sealing chamber, between piston and the cylinder body of chuck oil cylinder, be provided with hole y-type seal ring, hole is with being provided with and reducing the lower support ring that frictional resistance is used between the below piston of y-type seal ring and the cylinder body of chuck oil cylinder.
2. hydraulic chuck for core drilling machines according to claim 1, is characterized in that: on chuck oil cylinder, be provided with the pump nozzle communicating with hydraulic oil sealing chamber.
CN201420088063.2U 2014-02-28 2014-02-28 Hydraulic chuck of core drilling machine Expired - Fee Related CN203702032U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420088063.2U CN203702032U (en) 2014-02-28 2014-02-28 Hydraulic chuck of core drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420088063.2U CN203702032U (en) 2014-02-28 2014-02-28 Hydraulic chuck of core drilling machine

Publications (1)

Publication Number Publication Date
CN203702032U true CN203702032U (en) 2014-07-09

Family

ID=51052488

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420088063.2U Expired - Fee Related CN203702032U (en) 2014-02-28 2014-02-28 Hydraulic chuck of core drilling machine

Country Status (1)

Country Link
CN (1) CN203702032U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN106351593A (en) * 2015-11-05 2017-01-25 衡阳中地装备探矿工程机械有限公司 Drill pipe slip structure capable of retreating
CN107420053A (en) * 2017-06-30 2017-12-01 南京律智诚专利技术开发有限公司 A kind of drilling platforms rod support mechanism for drilling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN106351593A (en) * 2015-11-05 2017-01-25 衡阳中地装备探矿工程机械有限公司 Drill pipe slip structure capable of retreating
CN107420053A (en) * 2017-06-30 2017-12-01 南京律智诚专利技术开发有限公司 A kind of drilling platforms rod support mechanism for drilling

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160204

Address after: 222000 Jiangsu, Haizhou District, Haizhou Development Zone, the new East Road, No. 1

Patentee after: H.H. DRILL-TECH DRILLING MACHINERY CO., LTD.

Address before: 222000 Jiangsu, Haizhou District, Haizhou Development Zone, the new East Road, No. 1

Patentee before: Lianyungang Huanghai Machinery Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140709

Termination date: 20160228