CN103410455A - Compensation clamping hydraulic chuck - Google Patents

Compensation clamping hydraulic chuck Download PDF

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Publication number
CN103410455A
CN103410455A CN2013103503417A CN201310350341A CN103410455A CN 103410455 A CN103410455 A CN 103410455A CN 2013103503417 A CN2013103503417 A CN 2013103503417A CN 201310350341 A CN201310350341 A CN 201310350341A CN 103410455 A CN103410455 A CN 103410455A
Authority
CN
China
Prior art keywords
piston
slip sleeve
compensation
spring
clamping
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
Application number
CN2013103503417A
Other languages
Chinese (zh)
Inventor
邢苏宁
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.)
ZHENJIANG ANDA COAL MINE SPECIAL EQUIPMENT CO Ltd
Original Assignee
ZHENJIANG ANDA COAL MINE SPECIAL EQUIPMENT 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 ZHENJIANG ANDA COAL MINE SPECIAL EQUIPMENT CO Ltd filed Critical ZHENJIANG ANDA COAL MINE SPECIAL EQUIPMENT CO Ltd
Priority to CN2013103503417A priority Critical patent/CN103410455A/en
Publication of CN103410455A publication Critical patent/CN103410455A/en
Pending legal-status Critical Current

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Abstract

The invention relates to drilling equipment, in particular to a compensation clamping hydraulic chuck for drill equipment. The compensation clamping hydraulic chuck comprises a hydraulic cylinder. A piston which can be driven by hydraulic oil to axially move is disposed in the hydraulic cylinder. The piston is in a hollow structure. A spindle passes the center of the hollow piston. A slip sleeve which can move with the piston is connected to the front end of the piston. The front of the slip sleeve fits with a slip mounted on the spindle through conical surfaces. The slip sleeve can axially move back and forth to drive the slip to grip or loosen through fitting of the conical surfaces. A spring is disposed between the rear end face of the slip sleeve and a limit shoulder of the spindle. The slip sleeve moves forward under the action of the force of the spring. The compensation clamping hydraulic chuck adopting the spring clamping mode is reliable in clamping and long in serviced life; main parts of the compensation clamping hydraulic chuck are coaxial, so that the compensation clamping hydraulic chuck is compact in structure, well uniform in clamping motion of the slip and high in reliability.

Description

Compensation clamps oild chuck
Technical field
The present invention relates to a kind of drilling operation equipment, specifically a kind of compensation for drilling equipment clamps oild chuck.
Background technology
Oild chuck clamps drilling rod while being rig work, transmitting torque is realized bit cutting and the important process parts that creep into, and the reliability of clamping is the key that can rig work.The oild chuck of rig has both at home and abroad at present: spring force clamps, hydraulic unlock (clamping as normality); Hydraulic clamp, spring force unclamp (unclamping for normality); Hydraulic clamp, the pattern of unclamping.
The oild chuck of spring clamp is because the elastic force of spring is relevant to decrement, and, along with the fatigue of spring reduces gradually, causes clamping force not meet the demands and lost efficacy.The oild chuck of existing clamping compensation is generally two external oil cylinders, although can realize the compensation hydraulic clamping force, but the symmetric case that oil cylinder is installed, the synchronism of hydraulic cylinder, the homogeneity of oil cylinder extension elongation etc. all can cause unbalance loading and cause bearing damage, chuck was lost efficacy.
The chuck of hydraulic clamp makes gum cover produce radial contraction by hydraulic oil to realize clamping, and between gum cover and slips, can produce relative rotation when moment of torsion is larger, and gum cover is easily damaged, causes chuck to lose efficacy.The needs of aspect are set safely due to rig in addition, when using the chuck of hydraulic clamp, the clamper of necessary supporting spring clamp, and the problem that the spring of clamper equally also exists tired clamping force to descend.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of reliable clamping, the compensation good, long working life of action synchronism to clamp oild chuck.
Compensation of the present invention clamps oild chuck and includes a hydraulic cylinder, in hydraulic cylinder, is provided with and can drives its axially movable piston by hydraulic oil, and described piston is hollow structure, and a main shaft is passed by the piston center of hollow; Described piston nose is connected with one can be with its slip sleeve together moved, and the slip sleeve leading portion coordinates with the slips on being arranged on main shaft by the conical surface, and axially moving forward and backward of slip sleeve can drive the clamping of slips or unclamp by cone match; Between spacing shoulder on the rear end face of described slip sleeve and main shaft, be provided with spring, the direction of spring force moves forward slip sleeve.
Described spring is the dish spring be enclosed within on main shaft.
Described hydraulic cylinder rear end face is connected with a connection cover that is enclosed within the outer annular of main shaft, and connection cover seals the intracavity posterior end of described piston.
Described piston nose connects the top cover of a ring-type by internal thread, the rear end face of top cover is spacing by the shoulder of slip sleeve back segment, and the front end face of top cover is compressed by the gland be threaded connection on slip sleeve, and piston is fixedly connected with slip sleeve.
The spring clamp mode that the present invention adopts compensation hydraulic to clamp, reliable clamping, long working life; Its critical piece coaxially arranges, and the clamping action one of compact conformation, slips is good to property, reliability is high.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in the figure, this compensation clamps oild chuck and includes a hydraulic cylinder 1, in hydraulic cylinder, be provided with and can drive its axially movable piston 2 by hydraulic oil, concrete structure is: between piston and hydraulic cylinder, be provided with former and later two isolated oil pocket A and oil pocket B, be used for respectively the injection liquid force feed, driven plunger backward or move forward; Described piston is hollow structure, and a main shaft 3 is passed by the piston center of hollow; Described piston 2 front ends are connected with one can be with its slip sleeve 4 together moved, and the slip sleeve leading portion coordinates with the slips 5 on being arranged on main shaft by the conical surface, and axially moving forward and backward of slip sleeve can drive the clamping of slips or unclamp by cone match; Between spacing shoulder on the rear end face of described slip sleeve 4 and main shaft, be provided with spring 6, the direction of spring force moves forward slip sleeve 4.Described spring 6 can adopt the dish spring be enclosed within on main shaft.Described hydraulic cylinder 1 rear end face is connected with a connection cover 7 that is enclosed within the outer annular of main shaft, and connection cover 7 seals the intracavity posterior end of described piston 2.Described piston 2 front ends connect the top cover 8 of a ring-type by internal thread, the rear end face of top cover 8 is spacing by the shoulder of slip sleeve 4 back segments, and the front end face of top cover 8 is compressed by the gland 9 be threaded connection on slip sleeve, and piston is fixedly connected with slip sleeve.

Claims (4)

1. a compensation clamps oild chuck, and it is characterized in that: it includes a hydraulic cylinder (1), in hydraulic cylinder, is provided with and can drives its axially movable piston (2) by hydraulic oil; Described piston (2) is hollow structure, and a main shaft (3) is passed by the piston center of hollow; Described piston (2) front end is connected with one can be with its slip sleeve (4) together moved, the slip sleeve leading portion coordinates with the slips (5) on being arranged on main shaft by the conical surface, and axially moving forward and backward of slip sleeve can drive the clamping of slips or unclamp by cone match; Between the rear end face of described slip sleeve (4) and the spacing shoulder on main shaft, be provided with spring (6), the direction of spring force moves forward slip sleeve (4).
2. compensation according to claim 1 clamps oild chuck, it is characterized in that: described spring (6) is for being enclosed within the dish spring on main shaft.
3. compensation according to claim 1 clamps oild chuck, it is characterized in that: described hydraulic cylinder (1) rear end face is connected with a connection cover (7) that is enclosed within the outer annular of main shaft, and connection cover (7) seals the intracavity posterior end of described piston (2).
4. described compensation clamps oild chuck according to one of claim 1-3, it is characterized in that: described piston (2) front end connects the top cover (8) of a ring-type by internal thread, the rear end face of top cover (8) is spacing by the shoulder of slip sleeve (4) back segment, and the front end face of top cover (8) is compressed by the gland (9) be threaded connection on slip sleeve.
CN2013103503417A 2013-08-13 2013-08-13 Compensation clamping hydraulic chuck Pending CN103410455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013103503417A CN103410455A (en) 2013-08-13 2013-08-13 Compensation clamping hydraulic chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013103503417A CN103410455A (en) 2013-08-13 2013-08-13 Compensation clamping hydraulic chuck

Publications (1)

Publication Number Publication Date
CN103410455A true CN103410455A (en) 2013-11-27

Family

ID=49603489

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013103503417A Pending CN103410455A (en) 2013-08-13 2013-08-13 Compensation clamping hydraulic chuck

Country Status (1)

Country Link
CN (1) CN103410455A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899259A (en) * 2014-03-13 2014-07-02 平顶山市铁福来机电设备有限公司 Mine rubber-sleeve-free hydraulic chuck
CN104481427A (en) * 2014-12-11 2015-04-01 北京南车时代机车车辆机械有限公司 Roof bolter and drill pipe clamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956537A (en) * 2010-09-07 2011-01-26 镇江安达煤矿专用设备有限公司 Hydraulic chunk with function of compensatory clamping
CN102536138A (en) * 2010-12-09 2012-07-04 无锡市安迈工程机械有限公司 Hydraulic chuck of drilling machine
CN102536137A (en) * 2010-12-08 2012-07-04 西安众智惠泽光电科技有限公司 Combined-type hydraulic chuck for tunnel drilling rig
CN203488118U (en) * 2013-08-13 2014-03-19 镇江安达煤矿专用设备有限公司 Clamping-compensating hydraulic chuck

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956537A (en) * 2010-09-07 2011-01-26 镇江安达煤矿专用设备有限公司 Hydraulic chunk with function of compensatory clamping
CN102536137A (en) * 2010-12-08 2012-07-04 西安众智惠泽光电科技有限公司 Combined-type hydraulic chuck for tunnel drilling rig
CN102536138A (en) * 2010-12-09 2012-07-04 无锡市安迈工程机械有限公司 Hydraulic chuck of drilling machine
CN203488118U (en) * 2013-08-13 2014-03-19 镇江安达煤矿专用设备有限公司 Clamping-compensating hydraulic chuck

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899259A (en) * 2014-03-13 2014-07-02 平顶山市铁福来机电设备有限公司 Mine rubber-sleeve-free hydraulic chuck
CN103899259B (en) * 2014-03-13 2017-01-04 河南铁福来装备制造股份有限公司 A kind of mining oild chuck without packing element
CN104481427A (en) * 2014-12-11 2015-04-01 北京南车时代机车车辆机械有限公司 Roof bolter and drill pipe clamp

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PB01 Publication
C10 Entry into substantive examination
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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20131127